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Configure revision 1.23
      1 #! /usr/bin/env perl
      2 # -*- mode: perl; -*-
      3 # Copyright 2016-2019 The OpenSSL Project Authors. All Rights Reserved.
      4 #
      5 # Licensed under the OpenSSL license (the "License").  You may not use
      6 # this file except in compliance with the License.  You can obtain a copy
      7 # in the file LICENSE in the source distribution or at
      8 # https://www.openssl.org/source/license.html
      9 
     10 ##  Configure -- OpenSSL source tree configuration script
     11 
     12 use 5.10.0;
     13 use strict;
     14 use Config;
     15 use FindBin;
     16 use lib "$FindBin::Bin/util/perl";
     17 use File::Basename;
     18 use File::Spec::Functions qw/:DEFAULT abs2rel rel2abs/;
     19 use File::Path qw/mkpath/;
     20 use OpenSSL::Glob;
     21 
     22 # see INSTALL for instructions.
     23 
     24 my $orig_death_handler = $SIG{__DIE__};
     25 $SIG{__DIE__} = \&death_handler;
     26 
     27 my $usage="Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-Kxxx] [no-hw-xxx|no-hw] [[no-]threads] [[no-]shared] [[no-]zlib|zlib-dynamic] [no-asm] [no-dso] [no-egd] [sctp] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--with-xxx[=vvv]] [--config=FILE] os/compiler[:flags]\n";
     28 
     29 # Options:
     30 #
     31 # --config      add the given configuration file, which will be read after
     32 #               any "Configurations*" files that are found in the same
     33 #               directory as this script.
     34 # --prefix      prefix for the OpenSSL installation, which includes the
     35 #               directories bin, lib, include, share/man, share/doc/openssl
     36 #               This becomes the value of INSTALLTOP in Makefile
     37 #               (Default: /usr/local)
     38 # --openssldir  OpenSSL data area, such as openssl.cnf, certificates and keys.
     39 #               If it's a relative directory, it will be added on the directory
     40 #               given with --prefix.
     41 #               This becomes the value of OPENSSLDIR in Makefile and in C.
     42 #               (Default: PREFIX/ssl)
     43 #
     44 # --cross-compile-prefix Add specified prefix to binutils components.
     45 #
     46 # --api         One of 0.9.8, 1.0.0 or 1.1.0.  Do not compile support for
     47 #               interfaces deprecated as of the specified OpenSSL version.
     48 #
     49 # no-hw-xxx     do not compile support for specific crypto hardware.
     50 #               Generic OpenSSL-style methods relating to this support
     51 #               are always compiled but return NULL if the hardware
     52 #               support isn't compiled.
     53 # no-hw         do not compile support for any crypto hardware.
     54 # [no-]threads  [don't] try to create a library that is suitable for
     55 #               multithreaded applications (default is "threads" if we
     56 #               know how to do it)
     57 # [no-]shared	[don't] try to create shared libraries when supported.
     58 # [no-]pic      [don't] try to build position independent code when supported.
     59 #               If disabled, it also disables shared and dynamic-engine.
     60 # no-asm        do not use assembler
     61 # no-dso        do not compile in any native shared-library methods. This
     62 #               will ensure that all methods just return NULL.
     63 # no-egd        do not compile support for the entropy-gathering daemon APIs
     64 # [no-]zlib     [don't] compile support for zlib compression.
     65 # zlib-dynamic	Like "zlib", but the zlib library is expected to be a shared
     66 #		library and will be loaded in run-time by the OpenSSL library.
     67 # sctp          include SCTP support
     68 # enable-weak-ssl-ciphers
     69 #               Enable weak ciphers that are disabled by default.
     70 # 386           generate 80386 code in assembly modules
     71 # no-sse2       disables IA-32 SSE2 code in assembly modules, the above
     72 #               mentioned '386' option implies this one
     73 # no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
     74 # -<xxx> +<xxx> compiler options are passed through
     75 # -static       while -static is also a pass-through compiler option (and
     76 #               as such is limited to environments where it's actually
     77 #               meaningful), it triggers a number configuration options,
     78 #               namely no-dso, no-pic, no-shared and no-threads. It is
     79 #               argued that the only reason to produce statically linked
     80 #               binaries (and in context it means executables linked with
     81 #               -static flag, and not just executables linked with static
     82 #               libcrypto.a) is to eliminate dependency on specific run-time,
     83 #               a.k.a. libc version. The mentioned config options are meant
     84 #               to achieve just that. Unfortunately on Linux it's impossible
     85 #               to eliminate the dependency completely for openssl executable
     86 #               because of getaddrinfo and gethostbyname calls, which can
     87 #               invoke dynamically loadable library facility anyway to meet
     88 #               the lookup requests. For this reason on Linux statically
     89 #               linked openssl executable has rather debugging value than
     90 #               production quality.
     91 #
     92 # DEBUG_SAFESTACK use type-safe stacks to enforce type-safety on stack items
     93 #		provided to stack calls. Generates unique stack functions for
     94 #		each possible stack type.
     95 # BN_LLONG	use the type 'long long' in crypto/bn/bn.h
     96 # RC4_CHAR	use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
     97 # Following are set automatically by this script
     98 #
     99 # MD5_ASM	use some extra md5 assembler,
    100 # SHA1_ASM	use some extra sha1 assembler, must define L_ENDIAN for x86
    101 # RMD160_ASM	use some extra ripemd160 assembler,
    102 # SHA256_ASM	sha256_block is implemented in assembler
    103 # SHA512_ASM	sha512_block is implemented in assembler
    104 # AES_ASM	AES_[en|de]crypt is implemented in assembler
    105 
    106 # Minimum warning options... any contributions to OpenSSL should at least get
    107 # past these.
    108 
    109 # DEBUG_UNUSED enables __owur (warn unused result) checks.
    110 # -DPEDANTIC complements -pedantic and is meant to mask code that
    111 # is not strictly standard-compliant and/or implementation-specific,
    112 # e.g. inline assembly, disregards to alignment requirements, such
    113 # that -pedantic would complain about. Incidentally -DPEDANTIC has
    114 # to be used even in sanitized builds, because sanitizer too is
    115 # supposed to and does take notice of non-standard behaviour. Then
    116 # -pedantic with pre-C9x compiler would also complain about 'long
    117 # long' not being supported. As 64-bit algorithms are common now,
    118 # it grew impossible to resolve this without sizeable additional
    119 # code, so we just tell compiler to be pedantic about everything
    120 # but 'long long' type.
    121 
    122 my $gcc_devteam_warn = "-DDEBUG_UNUSED"
    123         . " -DPEDANTIC -pedantic -Wno-long-long"
    124         . " -Wall"
    125         . " -Wextra"
    126         . " -Wno-unused-parameter"
    127         . " -Wno-missing-field-initializers"
    128         . " -Wswitch"
    129         . " -Wsign-compare"
    130         . " -Wmissing-prototypes"
    131         . " -Wstrict-prototypes"
    132         . " -Wshadow"
    133         . " -Wformat"
    134         . " -Wtype-limits"
    135         . " -Wundef"
    136         . " -Werror"
    137         ;
    138 
    139 # These are used in addition to $gcc_devteam_warn when the compiler is clang.
    140 # TODO(openssl-team): fix problems and investigate if (at least) the
    141 # following warnings can also be enabled:
    142 #       -Wcast-align
    143 #       -Wunreachable-code -- no, too ugly/compiler-specific
    144 #       -Wlanguage-extension-token -- no, we use asm()
    145 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
    146 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
    147 #       -Wunused-function -- no, it forces header use of safestack et al
    148 #                            DEFINE macros
    149 my $clang_devteam_warn = ""
    150         . " -Wswitch-default"
    151         . " -Wno-parentheses-equality"
    152         . " -Wno-language-extension-token"
    153         . " -Wno-extended-offsetof"
    154         . " -Wconditional-uninitialized"
    155         . " -Wincompatible-pointer-types-discards-qualifiers"
    156         . " -Wmissing-variable-declarations"
    157         . " -Wno-unknown-warning-option"
    158         . " -Wno-unused-function"
    159         ;
    160 
    161 # This adds backtrace information to the memory leak info.  Is only used
    162 # when crypto-mdebug-backtrace is enabled.
    163 my $memleak_devteam_backtrace = "-rdynamic";
    164 
    165 my $strict_warnings = 0;
    166 
    167 # As for $BSDthreads. Idea is to maintain "collective" set of flags,
    168 # which would cover all BSD flavors. -pthread applies to them all,
    169 # but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
    170 # -lc_r, which is sufficient. FreeBSD 4.x expands it as -lc_r,
    171 # which has to be accompanied by explicit -D_THREAD_SAFE and
    172 # sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
    173 # seems to be sufficient?
    174 our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
    175 
    176 #
    177 # API compatibility name to version number mapping.
    178 #
    179 my $maxapi = "1.1.0";           # API for "no-deprecated" builds
    180 my $apitable = {
    181     "1.1.0" => "0x10100000L",
    182     "1.0.0" => "0x10000000L",
    183     "0.9.8" => "0x00908000L",
    184 };
    185 
    186 our %table = ();
    187 our %config = ();
    188 our %withargs = ();
    189 our $now_printing;      # set to current entry's name in print_table_entry
    190                         # (todo: right thing would be to encapsulate name
    191                         # into %target [class] and make print_table_entry
    192                         # a method)
    193 
    194 # Forward declarations ###############################################
    195 
    196 # read_config(filename)
    197 #
    198 # Reads a configuration file and populates %table with the contents
    199 # (which the configuration file places in %targets).
    200 sub read_config;
    201 
    202 # resolve_config(target)
    203 #
    204 # Resolves all the late evaluations, inheritances and so on for the
    205 # chosen target and any target it inherits from.
    206 sub resolve_config;
    207 
    208 
    209 # Information collection #############################################
    210 
    211 # Unified build supports separate build dir
    212 my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
    213 my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
    214 my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));
    215 
    216 my $local_config_envname = 'OPENSSL_LOCAL_CONFIG_DIR';
    217 
    218 $config{sourcedir} = abs2rel($srcdir);
    219 $config{builddir} = abs2rel($blddir);
    220 
    221 # Collect reconfiguration information if needed
    222 my @argvcopy=@ARGV;
    223 
    224 if (grep /^reconf(igure)?$/, @argvcopy) {
    225     die "reconfiguring with other arguments present isn't supported"
    226         if scalar @argvcopy > 1;
    227     if (-f "./configdata.pm") {
    228 	my $file = "./configdata.pm";
    229 	unless (my $return = do $file) {
    230 	    die "couldn't parse $file: $@" if $@;
    231             die "couldn't do $file: $!"    unless defined $return;
    232             die "couldn't run $file"       unless $return;
    233 	}
    234 
    235 	@argvcopy = defined($configdata::config{perlargv}) ?
    236 	    @{$configdata::config{perlargv}} : ();
    237 	die "Incorrect data to reconfigure, please do a normal configuration\n"
    238 	    if (grep(/^reconf/,@argvcopy));
    239 	$config{perlenv} = $configdata::config{perlenv} // {};
    240     } else {
    241 	die "Insufficient data to reconfigure, please do a normal configuration\n";
    242     }
    243 }
    244 
    245 $config{perlargv} = [ @argvcopy ];
    246 
    247 # Collect version numbers
    248 $config{version} = "unknown";
    249 $config{version_num} = "unknown";
    250 $config{shlib_version_number} = "unknown";
    251 $config{shlib_version_history} = "unknown";
    252 
    253 collect_information(
    254     collect_from_file(catfile($srcdir,'include/openssl/opensslv.h')),
    255     qr/OPENSSL.VERSION.TEXT.*OpenSSL (\S+) / => sub { $config{version} = $1; },
    256     qr/OPENSSL.VERSION.NUMBER.*(0x\S+)/	     => sub { $config{version_num}=$1 },
    257     qr/SHLIB_VERSION_NUMBER *"([^"]+)"/	     => sub { $config{shlib_version_number}=$1 },
    258     qr/SHLIB_VERSION_HISTORY *"([^"]*)"/     => sub { $config{shlib_version_history}=$1 }
    259     );
    260 if ($config{shlib_version_history} ne "") { $config{shlib_version_history} .= ":"; }
    261 
    262 ($config{major}, $config{minor})
    263     = ($config{version} =~ /^([0-9]+)\.([0-9\.]+)/);
    264 ($config{shlib_major}, $config{shlib_minor})
    265     = ($config{shlib_version_number} =~ /^([0-9]+)\.([0-9\.]+)/);
    266 die "erroneous version information in opensslv.h: ",
    267     "$config{major}, $config{minor}, $config{shlib_major}, $config{shlib_minor}\n"
    268     if ($config{major} eq "" || $config{minor} eq ""
    269 	|| $config{shlib_major} eq "" ||  $config{shlib_minor} eq "");
    270 
    271 # Collect target configurations
    272 
    273 my $pattern = catfile(dirname($0), "Configurations", "*.conf");
    274 foreach (sort glob($pattern)) {
    275     &read_config($_);
    276 }
    277 
    278 if (defined env($local_config_envname)) {
    279     if ($^O eq 'VMS') {
    280         # VMS environment variables are logical names,
    281         # which can be used as is
    282         $pattern = $local_config_envname . ':' . '*.conf';
    283     } else {
    284         $pattern = catfile(env($local_config_envname), '*.conf');
    285     }
    286 
    287     foreach (sort glob($pattern)) {
    288         &read_config($_);
    289     }
    290 }
    291 
    292 # Save away perl command information
    293 $config{perl_cmd} = $^X;
    294 $config{perl_version} = $Config{version};
    295 $config{perl_archname} = $Config{archname};
    296 
    297 $config{prefix}="";
    298 $config{openssldir}="";
    299 $config{processor}="";
    300 $config{libdir}="";
    301 my $auto_threads=1;    # enable threads automatically? true by default
    302 my $default_ranlib;
    303 
    304 # Top level directories to build
    305 $config{dirs} = [ "crypto", "ssl", "engines", "apps", "test", "util", "tools", "fuzz" ];
    306 # crypto/ subdirectories to build
    307 $config{sdirs} = [
    308     "objects",
    309     "md2", "md4", "md5", "sha", "mdc2", "hmac", "ripemd", "whrlpool", "poly1305", "blake2", "siphash", "sm3",
    310     "des", "aes", "rc2", "rc4", "rc5", "idea", "aria", "bf", "cast", "camellia", "seed", "sm4", "chacha", "modes",
    311     "bn", "ec", "rsa", "dsa", "dh", "sm2", "dso", "engine",
    312     "buffer", "bio", "stack", "lhash", "rand", "err",
    313     "evp", "asn1", "pem", "x509", "x509v3", "conf", "txt_db", "pkcs7", "pkcs12", "comp", "ocsp", "ui",
    314     "cms", "ts", "srp", "cmac", "ct", "async", "kdf", "store"
    315     ];
    316 # test/ subdirectories to build
    317 $config{tdirs} = [ "ossl_shim" ];
    318 
    319 # Known TLS and DTLS protocols
    320 my @tls = qw(ssl3 tls1 tls1_1 tls1_2 tls1_3);
    321 my @dtls = qw(dtls1 dtls1_2);
    322 
    323 # Explicitly known options that are possible to disable.  They can
    324 # be regexps, and will be used like this: /^no-${option}$/
    325 # For developers: keep it sorted alphabetically
    326 
    327 my @disablables = (
    328     "afalgeng",
    329     "aria",
    330     "asan",
    331     "asm",
    332     "async",
    333     "autoalginit",
    334     "autoerrinit",
    335     "autoload-config",
    336     "bf",
    337     "blake2",
    338     "camellia",
    339     "capieng",
    340     "cast",
    341     "chacha",
    342     "cmac",
    343     "cms",
    344     "comp",
    345     "crypto-mdebug",
    346     "crypto-mdebug-backtrace",
    347     "ct",
    348     "deprecated",
    349     "des",
    350     "devcryptoeng",
    351     "dgram",
    352     "dh",
    353     "dsa",
    354     "dso",
    355     "dtls",
    356     "dynamic-engine",
    357     "ec",
    358     "ec2m",
    359     "ecdh",
    360     "ecdsa",
    361     "ec_nistp_64_gcc_128",
    362     "egd",
    363     "engine",
    364     "err",
    365     "external-tests",
    366     "filenames",
    367     "fuzz-libfuzzer",
    368     "fuzz-afl",
    369     "gost",
    370     "heartbeats",
    371     "hw(-.+)?",
    372     "idea",
    373     "makedepend",
    374     "md2",
    375     "md4",
    376     "mdc2",
    377     "msan",
    378     "multiblock",
    379     "nextprotoneg",
    380     "pinshared",
    381     "ocb",
    382     "ocsp",
    383     "pic",
    384     "poly1305",
    385     "posix-io",
    386     "psk",
    387     "rc2",
    388     "rc4",
    389     "rc5",
    390     "rdrand",
    391     "rfc3779",
    392     "rmd160",
    393     "scrypt",
    394     "sctp",
    395     "seed",
    396     "shared",
    397     "siphash",
    398     "sm2",
    399     "sm3",
    400     "sm4",
    401     "sock",
    402     "srp",
    403     "srtp",
    404     "sse2",
    405     "ssl",
    406     "ssl-trace",
    407     "static-engine",
    408     "stdio",
    409     "tests",
    410     "threads",
    411     "tls",
    412     "ts",
    413     "ubsan",
    414     "ui-console",
    415     "unit-test",
    416     "whirlpool",
    417     "weak-ssl-ciphers",
    418     "zlib",
    419     "zlib-dynamic",
    420     );
    421 foreach my $proto ((@tls, @dtls))
    422 	{
    423 	push(@disablables, $proto);
    424 	push(@disablables, "$proto-method") unless $proto eq "tls1_3";
    425 	}
    426 
    427 my %deprecated_disablables = (
    428     "ssl2" => undef,
    429     "buf-freelists" => undef,
    430     "ripemd" => "rmd160",
    431     "ui" => "ui-console",
    432     );
    433 
    434 # All of the following are disabled by default:
    435 
    436 our %disabled = ( # "what"         => "comment"
    437 		  "asan"		=> "default",
    438 		  "crypto-mdebug"       => "default",
    439 		  "crypto-mdebug-backtrace" => "default",
    440 		  "devcryptoeng"	=> "default",
    441 		  "ec_nistp_64_gcc_128" => "default",
    442 		  "egd"                 => "default",
    443 		  "external-tests"	=> "default",
    444 		  "fuzz-libfuzzer"	=> "default",
    445 		  "fuzz-afl"		=> "default",
    446 		  "heartbeats"          => "default",
    447 		  "md2"                 => "default",
    448                   "msan"                => "default",
    449 		  "rc5"                 => "default",
    450 		  "sctp"                => "default",
    451 		  "ssl-trace"           => "default",
    452 		  "ssl3"                => "default",
    453 		  "ssl3-method"         => "default",
    454                   "ubsan"		=> "default",
    455 		  "unit-test"           => "default",
    456 		  "weak-ssl-ciphers"    => "default",
    457 		  "zlib"                => "default",
    458 		  "zlib-dynamic"        => "default",
    459 		);
    460 
    461 # Note: => pair form used for aesthetics, not to truly make a hash table
    462 my @disable_cascades = (
    463     # "what"		=> [ "cascade", ... ]
    464     sub { $config{processor} eq "386" }
    465 			=> [ "sse2" ],
    466     "ssl"		=> [ "ssl3" ],
    467     "ssl3-method"	=> [ "ssl3" ],
    468     "zlib"		=> [ "zlib-dynamic" ],
    469     "des"		=> [ "mdc2" ],
    470     "ec"		=> [ "ecdsa", "ecdh" ],
    471 
    472     "dgram"		=> [ "dtls", "sctp" ],
    473     "sock"		=> [ "dgram" ],
    474     "dtls"		=> [ @dtls ],
    475     sub { 0 == scalar grep { !$disabled{$_} } @dtls }
    476 			=> [ "dtls" ],
    477 
    478     "tls"		=> [ @tls ],
    479     sub { 0 == scalar grep { !$disabled{$_} } @tls }
    480 			=> [ "tls" ],
    481 
    482     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
    483 
    484     # Without DSO, we can't load dynamic engines, so don't build them dynamic
    485     "dso"               => [ "dynamic-engine" ],
    486 
    487     # Without position independent code, there can be no shared libraries or DSOs
    488     "pic"               => [ "shared" ],
    489     "shared"            => [ "dynamic-engine" ],
    490     "engine"            => [ "afalgeng", "devcryptoeng" ],
    491 
    492     # no-autoalginit is only useful when building non-shared
    493     "autoalginit"       => [ "shared", "apps" ],
    494 
    495     "stdio"             => [ "apps", "capieng", "egd" ],
    496     "apps"              => [ "tests" ],
    497     "tests"             => [ "external-tests" ],
    498     "comp"              => [ "zlib" ],
    499     "ec"                => [ "tls1_3", "sm2" ],
    500     "sm3"               => [ "sm2" ],
    501     sub { !$disabled{"unit-test"} } => [ "heartbeats" ],
    502 
    503     sub { !$disabled{"msan"} } => [ "asm" ],
    504     );
    505 
    506 # Avoid protocol support holes.  Also disable all versions below N, if version
    507 # N is disabled while N+1 is enabled.
    508 #
    509 my @list = (reverse @tls);
    510 while ((my $first, my $second) = (shift @list, shift @list)) {
    511     last unless @list;
    512     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
    513 			      => [ @list ] );
    514     unshift @list, $second;
    515 }
    516 my @list = (reverse @dtls);
    517 while ((my $first, my $second) = (shift @list, shift @list)) {
    518     last unless @list;
    519     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
    520 			      => [ @list ] );
    521     unshift @list, $second;
    522 }
    523 
    524 # Explicit "no-..." options will be collected in %disabled along with the defaults.
    525 # To remove something from %disabled, use "enable-foo".
    526 # For symmetry, "disable-foo" is a synonym for "no-foo".
    527 
    528 &usage if ($#ARGV < 0);
    529 
    530 # For the "make variables" CINCLUDES and CDEFINES, we support lists with
    531 # platform specific list separators.  Users from those platforms should
    532 # recognise those separators from how you set up the PATH to find executables.
    533 # The default is the Unix like separator, :, but as an exception, we also
    534 # support the space as separator.
    535 my $list_separator_re =
    536     { VMS           => qr/(?<!\^),/,
    537       MSWin32       => qr/(?<!\\);/ } -> {$^O} // qr/(?<!\\)[:\s]/;
    538 # All the "make variables" we support
    539 # Some get pre-populated for the sake of backward compatibility
    540 # (we supported those before the change to "make variable" support.
    541 my %user = (
    542     AR          => env('AR'),
    543     ARFLAGS     => [],
    544     AS          => undef,
    545     ASFLAGS     => [],
    546     CC          => env('CC'),
    547     CFLAGS      => [],
    548     CXX         => env('CXX'),
    549     CXXFLAGS    => [],
    550     CPP         => undef,
    551     CPPFLAGS    => [],  # -D, -I, -Wp,
    552     CPPDEFINES  => [],  # Alternative for -D
    553     CPPINCLUDES => [],  # Alternative for -I
    554     CROSS_COMPILE => env('CROSS_COMPILE'),
    555     HASHBANGPERL=> env('HASHBANGPERL') || env('PERL'),
    556     LD          => undef,
    557     LDFLAGS     => [],  # -L, -Wl,
    558     LDLIBS      => [],  # -l
    559     MT          => undef,
    560     MTFLAGS     => [],
    561     PERL        => env('PERL') || ($^O ne "VMS" ? $^X : "perl"),
    562     RANLIB      => env('RANLIB'),
    563     RC          => env('RC') || env('WINDRES'),
    564     RCFLAGS     => [],
    565     RM          => undef,
    566    );
    567 # Info about what "make variables" may be prefixed with the cross compiler
    568 # prefix.  This should NEVER mention any such variable with a list for value.
    569 my @user_crossable = qw ( AR AS CC CXX CPP LD MT RANLIB RC );
    570 # The same but for flags given as Configure options.  These are *additional*
    571 # input, as opposed to the VAR=string option that override the corresponding
    572 # config target attributes
    573 my %useradd = (
    574     CPPDEFINES  => [],
    575     CPPINCLUDES => [],
    576     CPPFLAGS    => [],
    577     CFLAGS      => [],
    578     CXXFLAGS    => [],
    579     LDFLAGS     => [],
    580     LDLIBS      => [],
    581    );
    582 
    583 my %user_synonyms = (
    584     HASHBANGPERL=> 'PERL',
    585     RC          => 'WINDRES',
    586    );
    587 
    588 # Some target attributes have been renamed, this is the translation table
    589 my %target_attr_translate =(
    590     ar          => 'AR',
    591     as          => 'AS',
    592     cc          => 'CC',
    593     cxx         => 'CXX',
    594     cpp         => 'CPP',
    595     hashbangperl => 'HASHBANGPERL',
    596     ld          => 'LD',
    597     mt          => 'MT',
    598     ranlib      => 'RANLIB',
    599     rc          => 'RC',
    600     rm          => 'RM',
    601    );
    602 
    603 # Initialisers coming from 'config' scripts
    604 $config{defines} = [ split(/$list_separator_re/, env('__CNF_CPPDEFINES')) ];
    605 $config{includes} = [ split(/$list_separator_re/, env('__CNF_CPPINCLUDES')) ];
    606 $config{cppflags} = [ env('__CNF_CPPFLAGS') || () ];
    607 $config{cflags} = [ env('__CNF_CFLAGS') || () ];
    608 $config{cxxflags} = [ env('__CNF_CXXFLAGS') || () ];
    609 $config{lflags} = [ env('__CNF_LDFLAGS') || () ];
    610 $config{ex_libs} = [ env('__CNF_LDLIBS') || () ];
    611 
    612 $config{openssl_api_defines}=[];
    613 $config{openssl_algorithm_defines}=[];
    614 $config{openssl_thread_defines}=[];
    615 $config{openssl_sys_defines}=[];
    616 $config{openssl_other_defines}=[];
    617 $config{options}="";
    618 $config{build_type} = "release";
    619 my $target="";
    620 
    621 my %cmdvars = ();               # Stores FOO='blah' type arguments
    622 my %unsupported_options = ();
    623 my %deprecated_options = ();
    624 # If you change this, update apps/version.c
    625 my @known_seed_sources = qw(getrandom devrandom os egd none rdcpu librandom);
    626 my @seed_sources = ();
    627 while (@argvcopy)
    628 	{
    629 	$_ = shift @argvcopy;
    630 
    631 	# Support env variable assignments among the options
    632 	if (m|^(\w+)=(.+)?$|)
    633 		{
    634 		$cmdvars{$1} = $2;
    635 		# Every time a variable is given as a configuration argument,
    636 		# it acts as a reset if the variable.
    637 		if (exists $user{$1})
    638 			{
    639 			$user{$1} = ref $user{$1} eq "ARRAY" ? [] : undef;
    640 			}
    641 		#if (exists $useradd{$1})
    642 		#	{
    643 		#	$useradd{$1} = [];
    644 		#	}
    645 		next;
    646 		}
    647 
    648 	# VMS is a case insensitive environment, and depending on settings
    649 	# out of our control, we may receive options uppercased.  Let's
    650 	# downcase at least the part before any equal sign.
    651 	if ($^O eq "VMS")
    652 		{
    653 		s/^([^=]*)/lc($1)/e;
    654 		}
    655 
    656 	# some people just can't read the instructions, clang people have to...
    657 	s/^-no-(?!integrated-as)/no-/;
    658 
    659 	# rewrite some options in "enable-..." form
    660 	s /^-?-?shared$/enable-shared/;
    661 	s /^sctp$/enable-sctp/;
    662 	s /^threads$/enable-threads/;
    663 	s /^zlib$/enable-zlib/;
    664 	s /^zlib-dynamic$/enable-zlib-dynamic/;
    665 
    666         if (/^(no|disable|enable)-(.+)$/)
    667                 {
    668                 my $word = $2;
    669                 if (!exists $deprecated_disablables{$word}
    670                         && !grep { $word =~ /^${_}$/ } @disablables)
    671                         {
    672                         $unsupported_options{$_} = 1;
    673                         next;
    674                         }
    675                 }
    676         if (/^no-(.+)$/ || /^disable-(.+)$/)
    677                 {
    678                 foreach my $proto ((@tls, @dtls))
    679                         {
    680                         if ($1 eq "$proto-method")
    681                                 {
    682                                 $disabled{"$proto"} = "option($proto-method)";
    683                                 last;
    684                                 }
    685                         }
    686                 if ($1 eq "dtls")
    687                         {
    688                         foreach my $proto (@dtls)
    689                                 {
    690                                 $disabled{$proto} = "option(dtls)";
    691                                 }
    692                         $disabled{"dtls"} = "option(dtls)";
    693                         }
    694                 elsif ($1 eq "ssl")
    695                         {
    696                         # Last one of its kind
    697                         $disabled{"ssl3"} = "option(ssl)";
    698                         }
    699                 elsif ($1 eq "tls")
    700                         {
    701                         # XXX: Tests will fail if all SSL/TLS
    702                         # protocols are disabled.
    703                         foreach my $proto (@tls)
    704                                 {
    705                                 $disabled{$proto} = "option(tls)";
    706                                 }
    707                         }
    708                 elsif ($1 eq "static-engine")
    709                         {
    710                         delete $disabled{"dynamic-engine"};
    711                         }
    712                 elsif ($1 eq "dynamic-engine")
    713                         {
    714                         $disabled{"dynamic-engine"} = "option";
    715                         }
    716                 elsif (exists $deprecated_disablables{$1})
    717                         {
    718                         $deprecated_options{$_} = 1;
    719                         if (defined $deprecated_disablables{$1})
    720                                 {
    721                                 $disabled{$deprecated_disablables{$1}} = "option";
    722                                 }
    723                         }
    724                 else
    725                         {
    726                         $disabled{$1} = "option";
    727                         }
    728 		# No longer an automatic choice
    729 		$auto_threads = 0 if ($1 eq "threads");
    730 		}
    731 	elsif (/^enable-(.+)$/)
    732 		{
    733                 if ($1 eq "static-engine")
    734                         {
    735                         $disabled{"dynamic-engine"} = "option";
    736                         }
    737                 elsif ($1 eq "dynamic-engine")
    738                         {
    739                         delete $disabled{"dynamic-engine"};
    740                         }
    741                 elsif ($1 eq "zlib-dynamic")
    742                         {
    743                         delete $disabled{"zlib"};
    744                         }
    745 		my $algo = $1;
    746 		delete $disabled{$algo};
    747 
    748 		# No longer an automatic choice
    749 		$auto_threads = 0 if ($1 eq "threads");
    750 		}
    751 	elsif (/^--strict-warnings$/)
    752 		{
    753 		$strict_warnings = 1;
    754 		}
    755 	elsif (/^--debug$/)
    756 		{
    757 		$config{build_type} = "debug";
    758 		}
    759 	elsif (/^--release$/)
    760 		{
    761 		$config{build_type} = "release";
    762 		}
    763 	elsif (/^386$/)
    764 		{ $config{processor}=386; }
    765 	elsif (/^fips$/)
    766 		{
    767 		die "FIPS mode not supported\n";
    768 		}
    769 	elsif (/^rsaref$/)
    770 		{
    771 		# No RSAref support any more since it's not needed.
    772 		# The check for the option is there so scripts aren't
    773 		# broken
    774 		}
    775 	elsif (/^nofipscanistercheck$/)
    776 		{
    777 		die "FIPS mode not supported\n";
    778 		}
    779 	elsif (/^[-+]/)
    780 		{
    781 		if (/^--prefix=(.*)$/)
    782 			{
    783 			$config{prefix}=$1;
    784 			die "Directory given with --prefix MUST be absolute\n"
    785 				unless file_name_is_absolute($config{prefix});
    786 			}
    787 		elsif (/^--api=(.*)$/)
    788 			{
    789 			$config{api}=$1;
    790 			}
    791 		elsif (/^--libdir=(.*)$/)
    792 			{
    793 			$config{libdir}=$1;
    794 			}
    795 		elsif (/^--openssldir=(.*)$/)
    796 			{
    797 			$config{openssldir}=$1;
    798 			}
    799 		elsif (/^--with-zlib-lib=(.*)$/)
    800 			{
    801 			$withargs{zlib_lib}=$1;
    802 			}
    803 		elsif (/^--with-zlib-include=(.*)$/)
    804 			{
    805 			$withargs{zlib_include}=$1;
    806 			}
    807 		elsif (/^--with-fuzzer-lib=(.*)$/)
    808 			{
    809 			$withargs{fuzzer_lib}=$1;
    810 			}
    811 		elsif (/^--with-fuzzer-include=(.*)$/)
    812 			{
    813 			$withargs{fuzzer_include}=$1;
    814 			}
    815 		elsif (/^--with-rand-seed=(.*)$/)
    816 			{
    817 			foreach my $x (split(m|,|, $1))
    818 			    {
    819 			    die "Unknown --with-rand-seed choice $x\n"
    820 				if ! grep { $x eq $_ } @known_seed_sources;
    821 			    push @seed_sources, $x;
    822 			    }
    823                         }
    824 		elsif (/^--cross-compile-prefix=(.*)$/)
    825 			{
    826 			$user{CROSS_COMPILE}=$1;
    827 			}
    828 		elsif (/^--config=(.*)$/)
    829 			{
    830 			read_config $1;
    831 			}
    832 		elsif (/^-l(.*)$/)
    833 			{
    834 			push @{$useradd{LDLIBS}}, $_;
    835 			}
    836 		elsif (/^-framework$/)
    837 			{
    838 			push @{$useradd{LDLIBS}}, $_, shift(@argvcopy);
    839 			}
    840 		elsif (/^-L(.*)$/ or /^-Wl,/)
    841 			{
    842 			push @{$useradd{LDFLAGS}}, $_;
    843 			}
    844 		elsif (/^-rpath$/ or /^-R$/)
    845 			# -rpath is the OSF1 rpath flag
    846 			# -R is the old Solaris rpath flag
    847 			{
    848 			my $rpath = shift(@argvcopy) || "";
    849 			$rpath .= " " if $rpath ne "";
    850 			push @{$useradd{LDFLAGS}}, $_, $rpath;
    851 			}
    852 		elsif (/^-static$/)
    853 			{
    854 			push @{$useradd{LDFLAGS}}, $_;
    855 			$disabled{"dso"} = "forced";
    856 			$disabled{"pic"} = "forced";
    857 			$disabled{"shared"} = "forced";
    858 			$disabled{"threads"} = "forced";
    859 			}
    860 		elsif (/^-D(.*)$/)
    861 			{
    862 			push @{$useradd{CPPDEFINES}}, $1;
    863 			}
    864 		elsif (/^-I(.*)$/)
    865 			{
    866 			push @{$useradd{CPPINCLUDES}}, $1;
    867 			}
    868 		elsif (/^-Wp,$/)
    869 			{
    870 			push @{$useradd{CPPFLAGS}}, $1;
    871 			}
    872 		else	# common if (/^[-+]/), just pass down...
    873 			{
    874 			$_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
    875 			push @{$useradd{CFLAGS}}, $_;
    876 			push @{$useradd{CXXFLAGS}}, $_;
    877 			}
    878 		}
    879 	else
    880 		{
    881 		die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
    882 		$target=$_;
    883 		}
    884 	unless ($_ eq $target || /^no-/ || /^disable-/)
    885 		{
    886 		# "no-..." follows later after implied deactivations
    887 		# have been derived.  (Don't take this too seriously,
    888 		# we really only write OPTIONS to the Makefile out of
    889 		# nostalgia.)
    890 
    891 		if ($config{options} eq "")
    892 			{ $config{options} = $_; }
    893 		else
    894 			{ $config{options} .= " ".$_; }
    895 		}
    896 	}
    897 
    898 if (defined($config{api}) && !exists $apitable->{$config{api}}) {
    899 	die "***** Unsupported api compatibility level: $config{api}\n",
    900 }
    901 
    902 if (keys %deprecated_options)
    903 	{
    904 	warn "***** Deprecated options: ",
    905 		join(", ", keys %deprecated_options), "\n";
    906 	}
    907 if (keys %unsupported_options)
    908 	{
    909 	die "***** Unsupported options: ",
    910 		join(", ", keys %unsupported_options), "\n";
    911 	}
    912 
    913 # If any %useradd entry has been set, we must check that the "make
    914 # variables" haven't been set.  We start by checking of any %useradd entry
    915 # is set.
    916 if (grep { scalar @$_ > 0 } values %useradd) {
    917     # Hash of env / make variables names.  The possible values are:
    918     # 1 - "make vars"
    919     # 2 - %useradd entry set
    920     # 3 - both set
    921     my %detected_vars =
    922         map { my $v = 0;
    923               $v += 1 if $cmdvars{$_};
    924               $v += 2 if @{$useradd{$_}};
    925               $_ => $v }
    926         keys %useradd;
    927 
    928     # If any of the corresponding "make variables" is set, we error
    929     if (grep { $_ & 1 } values %detected_vars) {
    930         my $names = join(', ', grep { $detected_vars{$_} > 0 }
    931                                sort keys %detected_vars);
    932         die <<"_____";
    933 ***** Mixing make variables and additional compiler/linker flags as
    934 ***** configure command line option is not permitted.
    935 ***** Affected make variables: $names
    936 _____
    937     }
    938 }
    939 
    940 # Check through all supported command line variables to see if any of them
    941 # were set, and canonicalise the values we got.  If no compiler or linker
    942 # flag or anything else that affects %useradd was set, we also check the
    943 # environment for values.
    944 my $anyuseradd =
    945     grep { defined $_ && (ref $_ ne 'ARRAY' || @$_) } values %useradd;
    946 foreach (keys %user) {
    947     my $value = $cmdvars{$_};
    948     $value //= env($_) unless $anyuseradd;
    949     $value //=
    950         defined $user_synonyms{$_} ? $cmdvars{$user_synonyms{$_}} : undef;
    951     $value //= defined $user_synonyms{$_} ? env($user_synonyms{$_}) : undef
    952         unless $anyuseradd;
    953 
    954     if (defined $value) {
    955         if (ref $user{$_} eq 'ARRAY') {
    956             $user{$_} = [ split /$list_separator_re/, $value ];
    957         } elsif (!defined $user{$_}) {
    958             $user{$_} = $value;
    959         }
    960     }
    961 }
    962 
    963 if (grep { /-rpath\b/ } ($user{LDFLAGS} ? @{$user{LDFLAGS}} : ())
    964     && !$disabled{shared}
    965     && !($disabled{asan} && $disabled{msan} && $disabled{ubsan})) {
    966     die "***** Cannot simultaneously use -rpath, shared libraries, and\n",
    967 	"***** any of asan, msan or ubsan\n";
    968 }
    969 
    970 my @tocheckfor = (keys %disabled);
    971 while (@tocheckfor) {
    972     my %new_tocheckfor = ();
    973     my @cascade_copy = (@disable_cascades);
    974     while (@cascade_copy) {
    975 	my ($test, $descendents) = (shift @cascade_copy, shift @cascade_copy);
    976 	if (ref($test) eq "CODE" ? $test->() : defined($disabled{$test})) {
    977 	    foreach(grep { !defined($disabled{$_}) } @$descendents) {
    978 		$new_tocheckfor{$_} = 1; $disabled{$_} = "forced";
    979 	    }
    980 	}
    981     }
    982     @tocheckfor = (keys %new_tocheckfor);
    983 }
    984 
    985 our $die = sub { die @_; };
    986 if ($target eq "TABLE") {
    987     local $die = sub { warn @_; };
    988     foreach (sort keys %table) {
    989 	print_table_entry($_, "TABLE");
    990     }
    991     exit 0;
    992 }
    993 
    994 if ($target eq "LIST") {
    995     foreach (sort keys %table) {
    996 	print $_,"\n" unless $table{$_}->{template};
    997     }
    998     exit 0;
    999 }
   1000 
   1001 if ($target eq "HASH") {
   1002     local $die = sub { warn @_; };
   1003     print "%table = (\n";
   1004     foreach (sort keys %table) {
   1005 	print_table_entry($_, "HASH");
   1006     }
   1007     exit 0;
   1008 }
   1009 
   1010 print "Configuring OpenSSL version $config{version} ($config{version_num}) ";
   1011 print "for $target\n";
   1012 
   1013 if (scalar(@seed_sources) == 0) {
   1014     print "Using os-specific seed configuration\n";
   1015     push @seed_sources, 'os';
   1016 }
   1017 if (scalar(grep { $_ eq 'none' } @seed_sources) > 0) {
   1018     die "Cannot seed with none and anything else" if scalar(@seed_sources) > 1;
   1019     warn <<_____ if scalar(@seed_sources) == 1;
   1020 
   1021 ============================== WARNING ===============================
   1022 You have selected the --with-rand-seed=none option, which effectively
   1023 disables automatic reseeding of the OpenSSL random generator.
   1024 All operations depending on the random generator such as creating keys
   1025 will not work unless the random generator is seeded manually by the
   1026 application.
   1027 
   1028 Please read the 'Note on random number generation' section in the
   1029 INSTALL instructions and the RAND_DRBG(7) manual page for more details.
   1030 ============================== WARNING ===============================
   1031 
   1032 _____
   1033 }
   1034 push @{$config{openssl_other_defines}},
   1035      map { (my $x = $_) =~ tr|[\-a-z]|[_A-Z]|; "OPENSSL_RAND_SEED_$x" }
   1036 	@seed_sources;
   1037 
   1038 # Backward compatibility?
   1039 if ($target =~ m/^CygWin32(-.*)$/) {
   1040     $target = "Cygwin".$1;
   1041 }
   1042 
   1043 # Support for legacy targets having a name starting with 'debug-'
   1044 my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
   1045 if ($d) {
   1046     $config{build_type} = "debug";
   1047 
   1048     # If we do not find debug-foo in the table, the target is set to foo.
   1049     if (!$table{$target}) {
   1050 	$target = $t;
   1051     }
   1052 }
   1053 
   1054 &usage if !$table{$target} || $table{$target}->{template};
   1055 
   1056 $config{target} = $target;
   1057 my %target = resolve_config($target);
   1058 
   1059 foreach (keys %target_attr_translate) {
   1060     $target{$target_attr_translate{$_}} = $target{$_}
   1061         if $target{$_};
   1062     delete $target{$_};
   1063 }
   1064 
   1065 %target = ( %{$table{DEFAULTS}}, %target );
   1066 
   1067 # Make the flags to build DSOs the same as for shared libraries unless they
   1068 # are already defined
   1069 $target{module_cflags} = $target{shared_cflag} unless defined $target{module_cflags};
   1070 $target{module_cxxflags} = $target{shared_cxxflag} unless defined $target{module_cxxflags};
   1071 $target{module_ldflags} = $target{shared_ldflag} unless defined $target{module_ldflags};
   1072 {
   1073     my $shared_info_pl =
   1074         catfile(dirname($0), "Configurations", "shared-info.pl");
   1075     my %shared_info = read_eval_file($shared_info_pl);
   1076     push @{$target{_conf_fname_int}}, $shared_info_pl;
   1077     my $si = $target{shared_target};
   1078     while (ref $si ne "HASH") {
   1079         last if ! defined $si;
   1080         if (ref $si eq "CODE") {
   1081             $si = $si->();
   1082         } else {
   1083             $si = $shared_info{$si};
   1084         }
   1085     }
   1086 
   1087     # Some of the 'shared_target' values don't have any entried in
   1088     # %shared_info.  That's perfectly fine, AS LONG AS the build file
   1089     # template knows how to handle this.  That is currently the case for
   1090     # Windows and VMS.
   1091     if (defined $si) {
   1092         # Just as above, copy certain shared_* attributes to the corresponding
   1093         # module_ attribute unless the latter is already defined
   1094         $si->{module_cflags} = $si->{shared_cflag} unless defined $si->{module_cflags};
   1095         $si->{module_cxxflags} = $si->{shared_cxxflag} unless defined $si->{module_cxxflags};
   1096         $si->{module_ldflags} = $si->{shared_ldflag} unless defined $si->{module_ldflags};
   1097         foreach (sort keys %$si) {
   1098             $target{$_} = defined $target{$_}
   1099                 ? add($si->{$_})->($target{$_})
   1100                 : $si->{$_};
   1101         }
   1102     }
   1103 }
   1104 
   1105 my %conf_files = map { $_ => 1 } (@{$target{_conf_fname_int}});
   1106 $config{conf_files} = [ sort keys %conf_files ];
   1107 
   1108 foreach my $feature (@{$target{disable}}) {
   1109     if (exists $deprecated_disablables{$feature}) {
   1110         warn "***** config $target disables deprecated feature $feature\n";
   1111     } elsif (!grep { $feature eq $_ } @disablables) {
   1112         die "***** config $target disables unknown feature $feature\n";
   1113     }
   1114     $disabled{$feature} = 'config';
   1115 }
   1116 foreach my $feature (@{$target{enable}}) {
   1117     if ("default" eq ($disabled{$feature} // "")) {
   1118         if (exists $deprecated_disablables{$feature}) {
   1119             warn "***** config $target enables deprecated feature $feature\n";
   1120         } elsif (!grep { $feature eq $_ } @disablables) {
   1121             die "***** config $target enables unknown feature $feature\n";
   1122         }
   1123         delete $disabled{$feature};
   1124     }
   1125 }
   1126 
   1127 $target{CXXFLAGS}//=$target{CFLAGS} if $target{CXX};
   1128 $target{cxxflags}//=$target{cflags} if $target{CXX};
   1129 $target{exe_extension}="";
   1130 $target{exe_extension}=".exe" if ($config{target} eq "DJGPP"
   1131                                   || $config{target} =~ /^(?:Cygwin|mingw)/);
   1132 $target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
   1133 
   1134 ($target{shared_extension_simple}=$target{shared_extension})
   1135     =~ s|\.\$\(SHLIB_VERSION_NUMBER\)||
   1136     unless defined($target{shared_extension_simple});
   1137 $target{dso_extension}//=$target{shared_extension_simple};
   1138 ($target{shared_import_extension}=$target{shared_extension_simple}.".a")
   1139     if ($config{target} =~ /^(?:Cygwin|mingw)/);
   1140 
   1141 # Fill %config with values from %user, and in case those are undefined or
   1142 # empty, use values from %target (acting as a default).
   1143 foreach (keys %user) {
   1144     my $ref_type = ref $user{$_};
   1145 
   1146     # Temporary function.  Takes an intended ref type (empty string or "ARRAY")
   1147     # and a value that's to be coerced into that type.
   1148     my $mkvalue = sub {
   1149         my $type = shift;
   1150         my $value = shift;
   1151         my $undef_p = shift;
   1152 
   1153         die "Too many arguments for \$mkvalue" if @_;
   1154 
   1155         while (ref $value eq 'CODE') {
   1156             $value = $value->();
   1157         }
   1158 
   1159         if ($type eq 'ARRAY') {
   1160             return undef unless defined $value;
   1161             return undef if ref $value ne 'ARRAY' && !$value;
   1162             return undef if ref $value eq 'ARRAY' && !@$value;
   1163             return [ $value ] unless ref $value eq 'ARRAY';
   1164         }
   1165         return undef unless $value;
   1166         return $value;
   1167     };
   1168 
   1169     $config{$_} =
   1170         $mkvalue->($ref_type, $user{$_})
   1171         || $mkvalue->($ref_type, $target{$_});
   1172     delete $config{$_} unless defined $config{$_};
   1173 }
   1174 
   1175 # Allow overriding the build file name
   1176 $config{build_file} = env('BUILDFILE') || $target{build_file} || "Makefile";
   1177 
   1178 my %disabled_info = ();         # For configdata.pm
   1179 foreach my $what (sort keys %disabled) {
   1180     $config{options} .= " no-$what";
   1181 
   1182     if (!grep { $what eq $_ } ( 'dso', 'threads', 'shared', 'pic',
   1183                                 'dynamic-engine', 'makedepend',
   1184                                 'zlib-dynamic', 'zlib', 'sse2' )) {
   1185         (my $WHAT = uc $what) =~ s|-|_|g;
   1186 
   1187         # Fix up C macro end names
   1188         $WHAT = "RMD160" if $what eq "ripemd";
   1189 
   1190         # fix-up crypto/directory name(s)
   1191         $what = "ripemd" if $what eq "rmd160";
   1192         $what = "whrlpool" if $what eq "whirlpool";
   1193 
   1194         my $macro = $disabled_info{$what}->{macro} = "OPENSSL_NO_$WHAT";
   1195 
   1196         if ((grep { $what eq $_ } @{$config{sdirs}})
   1197                 && $what ne 'async' && $what ne 'err') {
   1198             @{$config{sdirs}} = grep { $what ne $_} @{$config{sdirs}};
   1199             $disabled_info{$what}->{skipped} = [ catdir('crypto', $what) ];
   1200 
   1201             if ($what ne 'engine') {
   1202                 push @{$config{openssl_algorithm_defines}}, $macro;
   1203             } else {
   1204                 @{$config{dirs}} = grep !/^engines$/, @{$config{dirs}};
   1205                 push @{$disabled_info{engine}->{skipped}}, catdir('engines');
   1206                 push @{$config{openssl_other_defines}}, $macro;
   1207             }
   1208         } else {
   1209             push @{$config{openssl_other_defines}}, $macro;
   1210         }
   1211 
   1212     }
   1213 }
   1214 
   1215 # Make sure build_scheme is consistent.
   1216 $target{build_scheme} = [ $target{build_scheme} ]
   1217     if ref($target{build_scheme}) ne "ARRAY";
   1218 
   1219 my ($builder, $builder_platform, @builder_opts) =
   1220     @{$target{build_scheme}};
   1221 
   1222 foreach my $checker (($builder_platform."-".$target{build_file}."-checker.pm",
   1223                       $builder_platform."-checker.pm")) {
   1224     my $checker_path = catfile($srcdir, "Configurations", $checker);
   1225     if (-f $checker_path) {
   1226         my $fn = $ENV{CONFIGURE_CHECKER_WARN}
   1227             ? sub { warn $@; } : sub { die $@; };
   1228         if (! do $checker_path) {
   1229             if ($@) {
   1230                 $fn->($@);
   1231             } elsif ($!) {
   1232                 $fn->($!);
   1233             } else {
   1234                 $fn->("The detected tools didn't match the platform\n");
   1235             }
   1236         }
   1237         last;
   1238     }
   1239 }
   1240 
   1241 push @{$config{defines}}, "NDEBUG"    if $config{build_type} eq "release";
   1242 
   1243 if ($target =~ /^mingw/ && `$config{CC} --target-help 2>&1` =~ m/-mno-cygwin/m)
   1244 	{
   1245 	push @{$config{cflags}}, "-mno-cygwin";
   1246 	push @{$config{cxxflags}}, "-mno-cygwin" if $config{CXX};
   1247 	push @{$config{shared_ldflag}}, "-mno-cygwin";
   1248 	}
   1249 
   1250 if ($target =~ /linux.*-mips/ && !$disabled{asm}
   1251         && !grep { $_ !~ /-m(ips|arch=)/ } (@{$user{CFLAGS}},
   1252                                             @{$useradd{CFLAGS}})) {
   1253 	# minimally required architecture flags for assembly modules
   1254 	my $value;
   1255 	$value = '-mips2' if ($target =~ /mips32/);
   1256 	$value = '-mips3' if ($target =~ /mips64/);
   1257 	unshift @{$config{cflags}}, $value;
   1258 	unshift @{$config{cxxflags}}, $value if $config{CXX};
   1259 }
   1260 
   1261 # If threads aren't disabled, check how possible they are
   1262 unless ($disabled{threads}) {
   1263     if ($auto_threads) {
   1264         # Enabled by default, disable it forcibly if unavailable
   1265         if ($target{thread_scheme} eq "(unknown)") {
   1266             $disabled{threads} = "unavailable";
   1267         }
   1268     } else {
   1269         # The user chose to enable threads explicitly, let's see
   1270         # if there's a chance that's possible
   1271         if ($target{thread_scheme} eq "(unknown)") {
   1272             # If the user asked for "threads" and we don't have internal
   1273             # knowledge how to do it, [s]he is expected to provide any
   1274             # system-dependent compiler options that are necessary.  We
   1275             # can't truly check that the given options are correct, but
   1276             # we expect the user to know what [s]He is doing.
   1277             if (!@{$user{CFLAGS}} && !@{$useradd{CFLAGS}}
   1278                     && !@{$user{CPPDEFINES}} && !@{$useradd{CPPDEFINES}}) {
   1279                 die "You asked for multi-threading support, but didn't\n"
   1280                     ,"provide any system-specific compiler options\n";
   1281             }
   1282         }
   1283     }
   1284 }
   1285 
   1286 # If threads still aren't disabled, add a C macro to ensure the source
   1287 # code knows about it.  Any other flag is taken care of by the configs.
   1288 unless($disabled{threads}) {
   1289     push @{$config{openssl_thread_defines}}, "OPENSSL_THREADS";
   1290 }
   1291 
   1292 # With "deprecated" disable all deprecated features.
   1293 if (defined($disabled{"deprecated"})) {
   1294         $config{api} = $maxapi;
   1295 }
   1296 
   1297 my $no_shared_warn=0;
   1298 if ($target{shared_target} eq "")
   1299 	{
   1300 	$no_shared_warn = 1
   1301 	    if (!$disabled{shared} || !$disabled{"dynamic-engine"});
   1302 	$disabled{shared} = "no-shared-target";
   1303 	$disabled{pic} = $disabled{shared} = $disabled{"dynamic-engine"} =
   1304 	    "no-shared-target";
   1305 	}
   1306 
   1307 if ($disabled{"dynamic-engine"}) {
   1308         push @{$config{openssl_other_defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
   1309         $config{dynamic_engines} = 0;
   1310 } else {
   1311         push @{$config{openssl_other_defines}}, "OPENSSL_NO_STATIC_ENGINE";
   1312         $config{dynamic_engines} = 1;
   1313 }
   1314 
   1315 unless ($disabled{asan}) {
   1316     push @{$config{cflags}}, "-fsanitize=address";
   1317     push @{$config{cxxflags}}, "-fsanitize=address" if $config{CXX};
   1318 }
   1319 
   1320 unless ($disabled{ubsan}) {
   1321     # -DPEDANTIC or -fnosanitize=alignment may also be required on some
   1322     # platforms.
   1323     push @{$config{cflags}}, "-fsanitize=undefined", "-fno-sanitize-recover=all";
   1324     push @{$config{cxxflags}}, "-fsanitize=undefined", "-fno-sanitize-recover=all"
   1325         if $config{CXX};
   1326 }
   1327 
   1328 unless ($disabled{msan}) {
   1329   push @{$config{cflags}}, "-fsanitize=memory";
   1330   push @{$config{cxxflags}}, "-fsanitize=memory" if $config{CXX};
   1331 }
   1332 
   1333 unless ($disabled{"fuzz-libfuzzer"} && $disabled{"fuzz-afl"}
   1334         && $disabled{asan} && $disabled{ubsan} && $disabled{msan}) {
   1335     push @{$config{cflags}}, "-fno-omit-frame-pointer", "-g";
   1336     push @{$config{cxxflags}}, "-fno-omit-frame-pointer", "-g" if $config{CXX};
   1337 }
   1338 #
   1339 # Platform fix-ups
   1340 #
   1341 
   1342 # This saves the build files from having to check
   1343 if ($disabled{pic})
   1344 	{
   1345 	foreach (qw(shared_cflag shared_cxxflag shared_cppflag
   1346 		    shared_defines shared_includes shared_ldflag
   1347 		    module_cflags module_cxxflags module_cppflags
   1348 		    module_defines module_includes module_lflags))
   1349 		{
   1350 		delete $config{$_};
   1351 		$target{$_} = "";
   1352 		}
   1353 	}
   1354 else
   1355 	{
   1356 	push @{$config{lib_defines}}, "OPENSSL_PIC";
   1357 	}
   1358 
   1359 if ($target{sys_id} ne "")
   1360 	{
   1361 	push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
   1362 	}
   1363 
   1364 unless ($disabled{asm}) {
   1365     $target{cpuid_asm_src}=$table{DEFAULTS}->{cpuid_asm_src} if ($config{processor} eq "386");
   1366     push @{$config{lib_defines}}, "OPENSSL_CPUID_OBJ" if ($target{cpuid_asm_src} ne "mem_clr.c");
   1367 
   1368     $target{bn_asm_src} =~ s/\w+-gf2m.c// if (defined($disabled{ec2m}));
   1369 
   1370     # bn-586 is the only one implementing bn_*_part_words
   1371     push @{$config{lib_defines}}, "OPENSSL_BN_ASM_PART_WORDS" if ($target{bn_asm_src} =~ /bn-586/);
   1372     push @{$config{lib_defines}}, "OPENSSL_IA32_SSE2" if (!$disabled{sse2} && $target{bn_asm_src} =~ /86/);
   1373 
   1374     push @{$config{lib_defines}}, "OPENSSL_BN_ASM_MONT" if ($target{bn_asm_src} =~ /-mont/);
   1375     push @{$config{lib_defines}}, "OPENSSL_BN_ASM_MONT5" if ($target{bn_asm_src} =~ /-mont5/);
   1376     push @{$config{lib_defines}}, "OPENSSL_BN_ASM_GF2m" if ($target{bn_asm_src} =~ /-gf2m/);
   1377     push @{$config{lib_defines}}, "BN_DIV3W" if ($target{bn_asm_src} =~ /-div3w/);
   1378 
   1379     if ($target{sha1_asm_src}) {
   1380 	push @{$config{lib_defines}}, "SHA1_ASM"   if ($target{sha1_asm_src} =~ /sx86/ || $target{sha1_asm_src} =~ /sha1/);
   1381 	push @{$config{lib_defines}}, "SHA256_ASM" if ($target{sha1_asm_src} =~ /sha256/);
   1382 	push @{$config{lib_defines}}, "SHA512_ASM" if ($target{sha1_asm_src} =~ /sha512/);
   1383     }
   1384     if ($target{keccak1600_asm_src} ne $table{DEFAULTS}->{keccak1600_asm_src}) {
   1385 	push @{$config{lib_defines}}, "KECCAK1600_ASM";
   1386     }
   1387     if ($target{rc4_asm_src} ne $table{DEFAULTS}->{rc4_asm_src}) {
   1388 	push @{$config{lib_defines}}, "RC4_ASM";
   1389     }
   1390     if ($target{md5_asm_src}) {
   1391 	push @{$config{lib_defines}}, "MD5_ASM";
   1392     }
   1393     $target{cast_asm_src}=$table{DEFAULTS}->{cast_asm_src} unless $disabled{pic}; # CAST assembler is not PIC
   1394     if ($target{rmd160_asm_src}) {
   1395 	push @{$config{lib_defines}}, "RMD160_ASM";
   1396     }
   1397     if ($target{aes_asm_src}) {
   1398 	push @{$config{lib_defines}}, "AES_ASM" if ($target{aes_asm_src} =~ m/\baes-/);;
   1399 	# aes-ctr.fake is not a real file, only indication that assembler
   1400 	# module implements AES_ctr32_encrypt...
   1401 	push @{$config{lib_defines}}, "AES_CTR_ASM" if ($target{aes_asm_src} =~ s/\s*aes-ctr\.fake//);
   1402 	# aes-xts.fake indicates presence of AES_xts_[en|de]crypt...
   1403 	push @{$config{lib_defines}}, "AES_XTS_ASM" if ($target{aes_asm_src} =~ s/\s*aes-xts\.fake//);
   1404 	$target{aes_asm_src} =~ s/\s*(vpaes|aesni)-x86\.s//g if ($disabled{sse2});
   1405 	push @{$config{lib_defines}}, "VPAES_ASM" if ($target{aes_asm_src} =~ m/vpaes/);
   1406 	push @{$config{lib_defines}}, "BSAES_ASM" if ($target{aes_asm_src} =~ m/bsaes/);
   1407     }
   1408     if ($target{wp_asm_src} =~ /mmx/) {
   1409         if ($config{processor} eq "386") {
   1410 	    $target{wp_asm_src}=$table{DEFAULTS}->{wp_asm_src};
   1411 	} elsif (!$disabled{"whirlpool"}) {
   1412 	    push @{$config{lib_defines}}, "WHIRLPOOL_ASM";
   1413 	}
   1414     }
   1415     if ($target{modes_asm_src} =~ /ghash-/) {
   1416 	push @{$config{lib_defines}}, "GHASH_ASM";
   1417     }
   1418     if ($target{ec_asm_src} =~ /ecp_nistz256/) {
   1419 	push @{$config{lib_defines}}, "ECP_NISTZ256_ASM";
   1420     }
   1421     if ($target{ec_asm_src} =~ /x25519/) {
   1422 	push @{$config{lib_defines}}, "X25519_ASM";
   1423     }
   1424     if ($target{padlock_asm_src} ne $table{DEFAULTS}->{padlock_asm_src}) {
   1425 	push @{$config{lib_defines}}, "PADLOCK_ASM";
   1426     }
   1427     if ($target{poly1305_asm_src} ne "") {
   1428 	push @{$config{lib_defines}}, "POLY1305_ASM";
   1429     }
   1430 }
   1431 
   1432 my %predefined = compiler_predefined($config{CROSS_COMPILE}.$config{CC});
   1433 
   1434 # Check for makedepend capabilities.
   1435 if (!$disabled{makedepend}) {
   1436     if ($config{target} =~ /^(VC|vms)-/) {
   1437         # For VC- and vms- targets, there's nothing more to do here.  The
   1438         # functionality is hard coded in the corresponding build files for
   1439         # cl (Windows) and CC/DECC (VMS).
   1440     } elsif (($predefined{__GNUC__} // -1) >= 3
   1441 	     && !($predefined{__APPLE_CC__} && !$predefined{__clang__})) {
   1442         # We know that GNU C version 3 and up as well as all clang
   1443         # versions support dependency generation, but Xcode did not
   1444         # handle $cc -M before clang support (but claims __GNUC__ = 3)
   1445         $config{makedepprog} = "\$(CROSS_COMPILE)$config{CC}";
   1446     } else {
   1447         # In all other cases, we look for 'makedepend', and disable the
   1448         # capability if not found.
   1449         $config{makedepprog} = which('makedepend');
   1450         $disabled{makedepend} = "unavailable" unless $config{makedepprog};
   1451     }
   1452 }
   1453 
   1454 if (!$disabled{asm} && !$predefined{__MACH__} && $^O ne 'VMS') {
   1455     # probe for -Wa,--noexecstack option...
   1456     if ($predefined{__clang__}) {
   1457         # clang has builtin assembler, which doesn't recognize --help,
   1458         # but it apparently recognizes the option in question on all
   1459         # supported platforms even when it's meaningless. In other words
   1460         # probe would fail, but probed option always accepted...
   1461         push @{$config{cflags}}, "-Wa,--noexecstack", "-Qunused-arguments";
   1462     } else {
   1463         my $cc = $config{CROSS_COMPILE}.$config{CC};
   1464         open(PIPE, "$cc -Wa,--help -c -o null.$$.o -x assembler /dev/null 2>&1 |");
   1465         while(<PIPE>) {
   1466             if (m/--noexecstack/) {
   1467                 push @{$config{cflags}}, "-Wa,--noexecstack";
   1468                 last;
   1469             }
   1470         }
   1471         close(PIPE);
   1472         unlink("null.$$.o");
   1473     }
   1474 }
   1475 
   1476 # Deal with bn_ops ###################################################
   1477 
   1478 $config{bn_ll}			=0;
   1479 $config{export_var_as_fn}	=0;
   1480 my $def_int="unsigned int";
   1481 $config{rc4_int}		=$def_int;
   1482 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
   1483 
   1484 my $count = 0;
   1485 foreach (sort split(/\s+/,$target{bn_ops})) {
   1486     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
   1487     $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
   1488     $config{bn_ll}=1				if $_ eq 'BN_LLONG';
   1489     $config{rc4_int}="unsigned char"		if $_ eq 'RC4_CHAR';
   1490     ($config{b64l},$config{b64},$config{b32})
   1491 	=(0,1,0)				if $_ eq 'SIXTY_FOUR_BIT';
   1492     ($config{b64l},$config{b64},$config{b32})
   1493 	=(1,0,0)				if $_ eq 'SIXTY_FOUR_BIT_LONG';
   1494     ($config{b64l},$config{b64},$config{b32})
   1495 	=(0,0,1)				if $_ eq 'THIRTY_TWO_BIT';
   1496 }
   1497 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
   1498     if $count > 1;
   1499 
   1500 
   1501 # Hack cflags for better warnings (dev option) #######################
   1502 
   1503 # "Stringify" the C and C++ flags string.  This permits it to be made part of
   1504 # a string and works as well on command lines.
   1505 $config{cflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
   1506                         @{$config{cflags}} ];
   1507 $config{cxxflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
   1508                           @{$config{cxxflags}} ] if $config{CXX};
   1509 
   1510 if (defined($config{api})) {
   1511     $config{openssl_api_defines} = [ "OPENSSL_MIN_API=".$apitable->{$config{api}} ];
   1512     my $apiflag = sprintf("OPENSSL_API_COMPAT=%s", $apitable->{$config{api}});
   1513     push @{$config{defines}}, $apiflag;
   1514 }
   1515 
   1516 if ($strict_warnings)
   1517 	{
   1518 	my $wopt;
   1519 	my $gccver = $predefined{__GNUC__} // -1;
   1520 
   1521 	die "ERROR --strict-warnings requires gcc[>=4] or gcc-alike"
   1522             unless $gccver >= 4;
   1523 	foreach $wopt (split /\s+/, $gcc_devteam_warn)
   1524 		{
   1525 		push @{$config{cflags}}, $wopt
   1526 			unless grep { $_ eq $wopt } @{$config{cflags}};
   1527 		push @{$config{cxxflags}}, $wopt
   1528 			if ($config{CXX}
   1529 			    && !grep { $_ eq $wopt } @{$config{cxxflags}});
   1530 		}
   1531 	if (defined($predefined{__clang__}))
   1532 		{
   1533 		foreach $wopt (split /\s+/, $clang_devteam_warn)
   1534 			{
   1535 			push @{$config{cflags}}, $wopt
   1536 				unless grep { $_ eq $wopt } @{$config{cflags}};
   1537 			push @{$config{cxxflags}}, $wopt
   1538 				if ($config{CXX}
   1539 				    && !grep { $_ eq $wopt } @{$config{cxxflags}});
   1540 			}
   1541 		}
   1542 	}
   1543 
   1544 unless ($disabled{"crypto-mdebug-backtrace"})
   1545 	{
   1546 	foreach my $wopt (split /\s+/, $memleak_devteam_backtrace)
   1547 		{
   1548 		push @{$config{cflags}}, $wopt
   1549 			unless grep { $_ eq $wopt } @{$config{cflags}};
   1550 		push @{$config{cxxflags}}, $wopt
   1551 			if ($config{CXX}
   1552 			    && !grep { $_ eq $wopt } @{$config{cxxflags}});
   1553 		}
   1554 	if ($target =~ /^BSD-/)
   1555 		{
   1556 		push @{$config{ex_libs}}, "-lexecinfo";
   1557 		}
   1558 	}
   1559 
   1560 unless ($disabled{afalgeng}) {
   1561     $config{afalgeng}="";
   1562     if (grep { $_ eq 'afalgeng' } @{$target{enable}}) {
   1563         my $minver = 4*10000 + 1*100 + 0;
   1564         if ($config{CROSS_COMPILE} eq "") {
   1565             my $verstr = `uname -r`;
   1566             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
   1567             ($mi2) = $mi2 =~ /(\d+)/;
   1568             my $ver = $ma*10000 + $mi1*100 + $mi2;
   1569             if ($ver < $minver) {
   1570                 $disabled{afalgeng} = "too-old-kernel";
   1571             } else {
   1572                 push @{$config{engdirs}}, "afalg";
   1573             }
   1574         } else {
   1575             $disabled{afalgeng} = "cross-compiling";
   1576         }
   1577     } else {
   1578         $disabled{afalgeng}  = "not-linux";
   1579     }
   1580 }
   1581 
   1582 push @{$config{openssl_other_defines}}, "OPENSSL_NO_AFALGENG" if ($disabled{afalgeng});
   1583 
   1584 # Finish up %config by appending things the user gave us on the command line
   1585 # apart from "make variables"
   1586 foreach (keys %useradd) {
   1587     # The must all be lists, so we assert that here
   1588     die "internal error: \$useradd{$_} isn't an ARRAY\n"
   1589         unless ref $useradd{$_} eq 'ARRAY';
   1590 
   1591     if (defined $config{$_}) {
   1592         push @{$config{$_}}, @{$useradd{$_}};
   1593     } else {
   1594         $config{$_} = [ @{$useradd{$_}} ];
   1595     }
   1596 }
   1597 
   1598 # ALL MODIFICATIONS TO %config and %target MUST BE DONE FROM HERE ON
   1599 
   1600 # If we use the unified build, collect information from build.info files
   1601 my %unified_info = ();
   1602 
   1603 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
   1604 if ($builder eq "unified") {
   1605     use with_fallback qw(Text::Template);
   1606 
   1607     sub cleandir {
   1608         my $base = shift;
   1609         my $dir = shift;
   1610         my $relativeto = shift || ".";
   1611 
   1612         $dir = catdir($base,$dir) unless isabsolute($dir);
   1613 
   1614         # Make sure the directories we're building in exists
   1615         mkpath($dir);
   1616 
   1617         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
   1618         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
   1619         return $res;
   1620     }
   1621 
   1622     sub cleanfile {
   1623         my $base = shift;
   1624         my $file = shift;
   1625         my $relativeto = shift || ".";
   1626 
   1627         $file = catfile($base,$file) unless isabsolute($file);
   1628 
   1629         my $d = dirname($file);
   1630         my $f = basename($file);
   1631 
   1632         # Make sure the directories we're building in exists
   1633         mkpath($d);
   1634 
   1635         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
   1636         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
   1637         return $res;
   1638     }
   1639 
   1640     # Store the name of the template file we will build the build file from
   1641     # in %config.  This may be useful for the build file itself.
   1642     my @build_file_template_names =
   1643 	( $builder_platform."-".$target{build_file}.".tmpl",
   1644 	  $target{build_file}.".tmpl" );
   1645     my @build_file_templates = ();
   1646 
   1647     # First, look in the user provided directory, if given
   1648     if (defined env($local_config_envname)) {
   1649 	@build_file_templates =
   1650 	    map {
   1651 		if ($^O eq 'VMS') {
   1652 		    # VMS environment variables are logical names,
   1653 		    # which can be used as is
   1654 		    $local_config_envname . ':' . $_;
   1655 		} else {
   1656 		    catfile(env($local_config_envname), $_);
   1657 		}
   1658 	    }
   1659 	    @build_file_template_names;
   1660     }
   1661     # Then, look in our standard directory
   1662     push @build_file_templates,
   1663 	( map { cleanfile($srcdir, catfile("Configurations", $_), $blddir) }
   1664 	  @build_file_template_names );
   1665 
   1666     my $build_file_template;
   1667     for $_ (@build_file_templates) {
   1668 	$build_file_template = $_;
   1669         last if -f $build_file_template;
   1670 
   1671         $build_file_template = undef;
   1672     }
   1673     if (!defined $build_file_template) {
   1674 	die "*** Couldn't find any of:\n", join("\n", @build_file_templates), "\n";
   1675     }
   1676     $config{build_file_templates}
   1677       = [ cleanfile($srcdir, catfile("Configurations", "common0.tmpl"),
   1678                     $blddir),
   1679           $build_file_template,
   1680           cleanfile($srcdir, catfile("Configurations", "common.tmpl"),
   1681                     $blddir) ];
   1682 
   1683     my @build_infos = ( [ ".", "build.info" ] );
   1684     foreach (@{$config{dirs}}) {
   1685         push @build_infos, [ $_, "build.info" ]
   1686             if (-f catfile($srcdir, $_, "build.info"));
   1687     }
   1688     foreach (@{$config{sdirs}}) {
   1689         push @build_infos, [ catdir("crypto", $_), "build.info" ]
   1690             if (-f catfile($srcdir, "crypto", $_, "build.info"));
   1691     }
   1692     foreach (@{$config{engdirs}}) {
   1693         push @build_infos, [ catdir("engines", $_), "build.info" ]
   1694             if (-f catfile($srcdir, "engines", $_, "build.info"));
   1695     }
   1696     foreach (@{$config{tdirs}}) {
   1697         push @build_infos, [ catdir("test", $_), "build.info" ]
   1698             if (-f catfile($srcdir, "test", $_, "build.info"));
   1699     }
   1700 
   1701     $config{build_infos} = [ ];
   1702 
   1703     my %ordinals = ();
   1704     foreach (@build_infos) {
   1705         my $sourced = catdir($srcdir, $_->[0]);
   1706         my $buildd = catdir($blddir, $_->[0]);
   1707 
   1708         mkpath($buildd);
   1709 
   1710         my $f = $_->[1];
   1711         # The basic things we're trying to build
   1712         my @programs = ();
   1713         my @programs_install = ();
   1714         my @libraries = ();
   1715         my @libraries_install = ();
   1716         my @engines = ();
   1717         my @engines_install = ();
   1718         my @scripts = ();
   1719         my @scripts_install = ();
   1720         my @extra = ();
   1721         my @overrides = ();
   1722         my @intermediates = ();
   1723         my @rawlines = ();
   1724 
   1725         my %sources = ();
   1726         my %shared_sources = ();
   1727         my %includes = ();
   1728         my %depends = ();
   1729         my %renames = ();
   1730         my %sharednames = ();
   1731         my %generate = ();
   1732 
   1733         # We want to detect configdata.pm in the source tree, so we
   1734         # don't use it if the build tree is different.
   1735         my $src_configdata = cleanfile($srcdir, "configdata.pm", $blddir);
   1736 
   1737         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
   1738         my $template =
   1739             Text::Template->new(TYPE => 'FILE',
   1740                                 SOURCE => catfile($sourced, $f),
   1741                                 PREPEND => qq{use lib "$FindBin::Bin/util/perl";});
   1742         die "Something went wrong with $sourced/$f: $!\n" unless $template;
   1743         my @text =
   1744             split /^/m,
   1745             $template->fill_in(HASH => { config => \%config,
   1746                                          target => \%target,
   1747                                          disabled => \%disabled,
   1748                                          withargs => \%withargs,
   1749                                          builddir => abs2rel($buildd, $blddir),
   1750                                          sourcedir => abs2rel($sourced, $blddir),
   1751                                          buildtop => abs2rel($blddir, $blddir),
   1752                                          sourcetop => abs2rel($srcdir, $blddir) },
   1753                                DELIMITERS => [ "{-", "-}" ]);
   1754 
   1755         # The top item of this stack has the following values
   1756         # -2 positive already run and we found ELSE (following ELSIF should fail)
   1757         # -1 positive already run (skip until ENDIF)
   1758         # 0 negatives so far (if we're at a condition, check it)
   1759         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
   1760         # 2 positive ELSE (following ELSIF should fail)
   1761         my @skip = ();
   1762         collect_information(
   1763             collect_from_array([ @text ],
   1764                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
   1765                                                 $l1 =~ s/\\$//; $l1.$l2 }),
   1766             # Info we're looking for
   1767             qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
   1768             => sub {
   1769                 if (! @skip || $skip[$#skip] > 0) {
   1770                     push @skip, !! $1;
   1771                 } else {
   1772                     push @skip, -1;
   1773                 }
   1774             },
   1775             qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
   1776             => sub { die "ELSIF out of scope" if ! @skip;
   1777                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
   1778                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
   1779                      $skip[$#skip] = !! $1
   1780                          if $skip[$#skip] == 0; },
   1781             qr/^\s*ELSE\s*$/
   1782             => sub { die "ELSE out of scope" if ! @skip;
   1783                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
   1784                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
   1785             qr/^\s*ENDIF\s*$/
   1786             => sub { die "ENDIF out of scope" if ! @skip;
   1787                      pop @skip; },
   1788             qr/^\s*PROGRAMS(_NO_INST)?\s*=\s*(.*)\s*$/
   1789             => sub {
   1790                 if (!@skip || $skip[$#skip] > 0) {
   1791                     my $install = $1;
   1792                     my @x = tokenize($2);
   1793                     push @programs, @x;
   1794                     push @programs_install, @x unless $install;
   1795                 }
   1796             },
   1797             qr/^\s*LIBS(_NO_INST)?\s*=\s*(.*)\s*$/
   1798             => sub {
   1799                 if (!@skip || $skip[$#skip] > 0) {
   1800                     my $install = $1;
   1801                     my @x = tokenize($2);
   1802                     push @libraries, @x;
   1803                     push @libraries_install, @x unless $install;
   1804                 }
   1805             },
   1806             qr/^\s*ENGINES(_NO_INST)?\s*=\s*(.*)\s*$/
   1807             => sub {
   1808                 if (!@skip || $skip[$#skip] > 0) {
   1809                     my $install = $1;
   1810                     my @x = tokenize($2);
   1811                     push @engines, @x;
   1812                     push @engines_install, @x unless $install;
   1813                 }
   1814             },
   1815             qr/^\s*SCRIPTS(_NO_INST)?\s*=\s*(.*)\s*$/
   1816             => sub {
   1817                 if (!@skip || $skip[$#skip] > 0) {
   1818                     my $install = $1;
   1819                     my @x = tokenize($2);
   1820                     push @scripts, @x;
   1821                     push @scripts_install, @x unless $install;
   1822                 }
   1823             },
   1824             qr/^\s*EXTRA\s*=\s*(.*)\s*$/
   1825             => sub { push @extra, tokenize($1)
   1826                          if !@skip || $skip[$#skip] > 0 },
   1827             qr/^\s*OVERRIDES\s*=\s*(.*)\s*$/
   1828             => sub { push @overrides, tokenize($1)
   1829                          if !@skip || $skip[$#skip] > 0 },
   1830 
   1831             qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
   1832             => sub { push @{$ordinals{$1}}, tokenize($2)
   1833                          if !@skip || $skip[$#skip] > 0 },
   1834             qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1835             => sub { push @{$sources{$1}}, tokenize($2)
   1836                          if !@skip || $skip[$#skip] > 0 },
   1837             qr/^\s*SHARED_SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1838             => sub { push @{$shared_sources{$1}}, tokenize($2)
   1839                          if !@skip || $skip[$#skip] > 0 },
   1840             qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1841             => sub { push @{$includes{$1}}, tokenize($2)
   1842                          if !@skip || $skip[$#skip] > 0 },
   1843             qr/^\s*DEPEND\[((?:\\.|[^\\\]])*)\]\s*=\s*(.*)\s*$/
   1844             => sub { push @{$depends{$1}}, tokenize($2)
   1845                          if !@skip || $skip[$#skip] > 0 },
   1846             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1847             => sub { push @{$generate{$1}}, $2
   1848                          if !@skip || $skip[$#skip] > 0 },
   1849             qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1850             => sub { push @{$renames{$1}}, tokenize($2)
   1851                          if !@skip || $skip[$#skip] > 0 },
   1852             qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1853             => sub { push @{$sharednames{$1}}, tokenize($2)
   1854                          if !@skip || $skip[$#skip] > 0 },
   1855             qr/^\s*BEGINRAW\[((?:\\.|[^\\\]])+)\]\s*$/
   1856             => sub {
   1857                 my $lineiterator = shift;
   1858                 my $target_kind = $1;
   1859                 while (defined $lineiterator->()) {
   1860                     s|\R$||;
   1861                     if (/^\s*ENDRAW\[((?:\\.|[^\\\]])+)\]\s*$/) {
   1862                         die "ENDRAW doesn't match BEGINRAW"
   1863                             if $1 ne $target_kind;
   1864                         last;
   1865                     }
   1866                     next if @skip && $skip[$#skip] <= 0;
   1867                     push @rawlines,  $_
   1868                         if ($target_kind eq $target{build_file}
   1869                             || $target_kind eq $target{build_file}."(".$builder_platform.")");
   1870                 }
   1871             },
   1872             qr/^\s*(?:#.*)?$/ => sub { },
   1873             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
   1874             "BEFORE" => sub {
   1875                 if ($buildinfo_debug) {
   1876                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
   1877                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
   1878                 }
   1879             },
   1880             "AFTER" => sub {
   1881                 if ($buildinfo_debug) {
   1882                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
   1883                 }
   1884             },
   1885             );
   1886         die "runaway IF?" if (@skip);
   1887 
   1888         foreach (keys %renames) {
   1889             die "$_ renamed to more than one thing: "
   1890                 ,join(" ", @{$renames{$_}}),"\n"
   1891                 if scalar @{$renames{$_}} > 1;
   1892             my $dest = cleanfile($buildd, $_, $blddir);
   1893             my $to = cleanfile($buildd, $renames{$_}->[0], $blddir);
   1894             die "$dest renamed to more than one thing: "
   1895                 ,$unified_info{rename}->{$dest}, $to
   1896                 unless !defined($unified_info{rename}->{$dest})
   1897                 or $unified_info{rename}->{$dest} eq $to;
   1898             $unified_info{rename}->{$dest} = $to;
   1899         }
   1900 
   1901         foreach (@programs) {
   1902             my $program = cleanfile($buildd, $_, $blddir);
   1903             if ($unified_info{rename}->{$program}) {
   1904                 $program = $unified_info{rename}->{$program};
   1905             }
   1906             $unified_info{programs}->{$program} = 1;
   1907         }
   1908 
   1909         foreach (@programs_install) {
   1910             my $program = cleanfile($buildd, $_, $blddir);
   1911             if ($unified_info{rename}->{$program}) {
   1912                 $program = $unified_info{rename}->{$program};
   1913             }
   1914             $unified_info{install}->{programs}->{$program} = 1;
   1915         }
   1916 
   1917         foreach (@libraries) {
   1918             my $library = cleanfile($buildd, $_, $blddir);
   1919             if ($unified_info{rename}->{$library}) {
   1920                 $library = $unified_info{rename}->{$library};
   1921             }
   1922             $unified_info{libraries}->{$library} = 1;
   1923         }
   1924 
   1925         foreach (@libraries_install) {
   1926             my $library = cleanfile($buildd, $_, $blddir);
   1927             if ($unified_info{rename}->{$library}) {
   1928                 $library = $unified_info{rename}->{$library};
   1929             }
   1930             $unified_info{install}->{libraries}->{$library} = 1;
   1931         }
   1932 
   1933         die <<"EOF" if scalar @engines and !$config{dynamic_engines};
   1934 ENGINES can only be used if configured with 'dynamic-engine'.
   1935 This is usually a fault in a build.info file.
   1936 EOF
   1937         foreach (@engines) {
   1938             my $library = cleanfile($buildd, $_, $blddir);
   1939             if ($unified_info{rename}->{$library}) {
   1940                 $library = $unified_info{rename}->{$library};
   1941             }
   1942             $unified_info{engines}->{$library} = 1;
   1943         }
   1944 
   1945         foreach (@engines_install) {
   1946             my $library = cleanfile($buildd, $_, $blddir);
   1947             if ($unified_info{rename}->{$library}) {
   1948                 $library = $unified_info{rename}->{$library};
   1949             }
   1950             $unified_info{install}->{engines}->{$library} = 1;
   1951         }
   1952 
   1953         foreach (@scripts) {
   1954             my $script = cleanfile($buildd, $_, $blddir);
   1955             if ($unified_info{rename}->{$script}) {
   1956                 $script = $unified_info{rename}->{$script};
   1957             }
   1958             $unified_info{scripts}->{$script} = 1;
   1959         }
   1960 
   1961         foreach (@scripts_install) {
   1962             my $script = cleanfile($buildd, $_, $blddir);
   1963             if ($unified_info{rename}->{$script}) {
   1964                 $script = $unified_info{rename}->{$script};
   1965             }
   1966             $unified_info{install}->{scripts}->{$script} = 1;
   1967         }
   1968 
   1969         foreach (@extra) {
   1970             my $extra = cleanfile($buildd, $_, $blddir);
   1971             $unified_info{extra}->{$extra} = 1;
   1972         }
   1973 
   1974         foreach (@overrides) {
   1975             my $override = cleanfile($buildd, $_, $blddir);
   1976             $unified_info{overrides}->{$override} = 1;
   1977         }
   1978 
   1979         push @{$unified_info{rawlines}}, @rawlines;
   1980 
   1981         unless ($disabled{shared}) {
   1982             # Check sharednames.
   1983             foreach (keys %sharednames) {
   1984                 my $dest = cleanfile($buildd, $_, $blddir);
   1985                 if ($unified_info{rename}->{$dest}) {
   1986                     $dest = $unified_info{rename}->{$dest};
   1987                 }
   1988                 die "shared_name for $dest with multiple values: "
   1989                     ,join(" ", @{$sharednames{$_}}),"\n"
   1990                     if scalar @{$sharednames{$_}} > 1;
   1991                 my $to = cleanfile($buildd, $sharednames{$_}->[0], $blddir);
   1992                 die "shared_name found for a library $dest that isn't defined\n"
   1993                     unless $unified_info{libraries}->{$dest};
   1994                 die "shared_name for $dest with multiple values: "
   1995                     ,$unified_info{sharednames}->{$dest}, ", ", $to
   1996                     unless !defined($unified_info{sharednames}->{$dest})
   1997                     or $unified_info{sharednames}->{$dest} eq $to;
   1998                 $unified_info{sharednames}->{$dest} = $to;
   1999             }
   2000 
   2001             # Additionally, we set up sharednames for libraries that don't
   2002             # have any, as themselves.  Only for libraries that aren't
   2003             # explicitly static.
   2004             foreach (grep !/\.a$/, keys %{$unified_info{libraries}}) {
   2005                 if (!defined $unified_info{sharednames}->{$_}) {
   2006                     $unified_info{sharednames}->{$_} = $_
   2007                 }
   2008             }
   2009 
   2010             # Check that we haven't defined any library as both shared and
   2011             # explicitly static.  That is forbidden.
   2012             my @doubles = ();
   2013             foreach (grep /\.a$/, keys %{$unified_info{libraries}}) {
   2014                 (my $l = $_) =~ s/\.a$//;
   2015                 push @doubles, $l if defined $unified_info{sharednames}->{$l};
   2016             }
   2017             die "these libraries are both explicitly static and shared:\n  ",
   2018                 join(" ", @doubles), "\n"
   2019                 if @doubles;
   2020         }
   2021 
   2022         foreach (keys %sources) {
   2023             my $dest = $_;
   2024             my $ddest = cleanfile($buildd, $_, $blddir);
   2025             if ($unified_info{rename}->{$ddest}) {
   2026                 $ddest = $unified_info{rename}->{$ddest};
   2027             }
   2028             foreach (@{$sources{$dest}}) {
   2029                 my $s = cleanfile($sourced, $_, $blddir);
   2030 
   2031                 # If it isn't in the source tree, we assume it's generated
   2032                 # in the build tree
   2033                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
   2034                     $s = cleanfile($buildd, $_, $blddir);
   2035                 }
   2036                 # We recognise C++, C and asm files
   2037                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
   2038                     my $o = $_;
   2039                     $o =~ s/\.[csS]$/.o/; # C and assembler
   2040                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
   2041                     $o = cleanfile($buildd, $o, $blddir);
   2042                     $unified_info{sources}->{$ddest}->{$o} = 1;
   2043                     $unified_info{sources}->{$o}->{$s} = 1;
   2044                 } elsif ($s =~ /\.rc$/) {
   2045                     # We also recognise resource files
   2046                     my $o = $_;
   2047                     $o =~ s/\.rc$/.res/; # Resource configuration
   2048                     my $o = cleanfile($buildd, $o, $blddir);
   2049                     $unified_info{sources}->{$ddest}->{$o} = 1;
   2050                     $unified_info{sources}->{$o}->{$s} = 1;
   2051                 } else {
   2052                     $unified_info{sources}->{$ddest}->{$s} = 1;
   2053                 }
   2054             }
   2055         }
   2056 
   2057         foreach (keys %shared_sources) {
   2058             my $dest = $_;
   2059             my $ddest = cleanfile($buildd, $_, $blddir);
   2060             if ($unified_info{rename}->{$ddest}) {
   2061                 $ddest = $unified_info{rename}->{$ddest};
   2062             }
   2063             foreach (@{$shared_sources{$dest}}) {
   2064                 my $s = cleanfile($sourced, $_, $blddir);
   2065 
   2066                 # If it isn't in the source tree, we assume it's generated
   2067                 # in the build tree
   2068                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
   2069                     $s = cleanfile($buildd, $_, $blddir);
   2070                 }
   2071 
   2072                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
   2073                     # We recognise C++, C and asm files
   2074                     my $o = $_;
   2075                     $o =~ s/\.[csS]$/.o/; # C and assembler
   2076                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
   2077                     $o = cleanfile($buildd, $o, $blddir);
   2078                     $unified_info{shared_sources}->{$ddest}->{$o} = 1;
   2079                     $unified_info{sources}->{$o}->{$s} = 1;
   2080                 } elsif ($s =~ /\.rc$/) {
   2081                     # We also recognise resource files
   2082                     my $o = $_;
   2083                     $o =~ s/\.rc$/.res/; # Resource configuration
   2084                     my $o = cleanfile($buildd, $o, $blddir);
   2085                     $unified_info{shared_sources}->{$ddest}->{$o} = 1;
   2086                     $unified_info{sources}->{$o}->{$s} = 1;
   2087                 } elsif ($s =~ /\.(def|map|opt)$/) {
   2088                     # We also recognise .def / .map / .opt files
   2089                     # We know they are generated files
   2090                     my $def = cleanfile($buildd, $s, $blddir);
   2091                     $unified_info{shared_sources}->{$ddest}->{$def} = 1;
   2092                 } else {
   2093                     die "unrecognised source file type for shared library: $s\n";
   2094                 }
   2095             }
   2096         }
   2097 
   2098         foreach (keys %generate) {
   2099             my $dest = $_;
   2100             my $ddest = cleanfile($buildd, $_, $blddir);
   2101             if ($unified_info{rename}->{$ddest}) {
   2102                 $ddest = $unified_info{rename}->{$ddest};
   2103             }
   2104             die "more than one generator for $dest: "
   2105                     ,join(" ", @{$generate{$_}}),"\n"
   2106                     if scalar @{$generate{$_}} > 1;
   2107             my @generator = split /\s+/, $generate{$dest}->[0];
   2108             $generator[0] = cleanfile($sourced, $generator[0], $blddir),
   2109             $unified_info{generate}->{$ddest} = [ @generator ];
   2110         }
   2111 
   2112         foreach (keys %depends) {
   2113             my $dest = $_;
   2114             my $ddest = $dest eq "" ? "" : cleanfile($sourced, $_, $blddir);
   2115 
   2116             # If the destination doesn't exist in source, it can only be
   2117             # a generated file in the build tree.
   2118             if ($ddest ne "" && ($ddest eq $src_configdata || ! -f $ddest)) {
   2119                 $ddest = cleanfile($buildd, $_, $blddir);
   2120                 if ($unified_info{rename}->{$ddest}) {
   2121                     $ddest = $unified_info{rename}->{$ddest};
   2122                 }
   2123             }
   2124             foreach (@{$depends{$dest}}) {
   2125                 my $d = cleanfile($sourced, $_, $blddir);
   2126 
   2127                 # If we know it's generated, or assume it is because we can't
   2128                 # find it in the source tree, we set file we depend on to be
   2129                 # in the build tree rather than the source tree, and assume
   2130                 # and that there are lines to build it in a BEGINRAW..ENDRAW
   2131                 # section or in the Makefile template.
   2132                 if ($d eq $src_configdata
   2133                     || ! -f $d
   2134                     || (grep { $d eq $_ }
   2135                         map { cleanfile($srcdir, $_, $blddir) }
   2136                         grep { /\.h$/ } keys %{$unified_info{generate}})) {
   2137                     $d = cleanfile($buildd, $_, $blddir);
   2138                 }
   2139                 # Take note if the file to depend on is being renamed
   2140                 # Take extra care with files ending with .a, they should
   2141                 # be treated without that extension, and the extension
   2142                 # should be added back after treatment.
   2143                 $d =~ /(\.a)?$/;
   2144                 my $e = $1 // "";
   2145                 $d = $`;
   2146                 if ($unified_info{rename}->{$d}) {
   2147                     $d = $unified_info{rename}->{$d};
   2148                 }
   2149                 $d .= $e;
   2150                 $unified_info{depends}->{$ddest}->{$d} = 1;
   2151             }
   2152         }
   2153 
   2154         foreach (keys %includes) {
   2155             my $dest = $_;
   2156             my $ddest = cleanfile($sourced, $_, $blddir);
   2157 
   2158             # If the destination doesn't exist in source, it can only be
   2159             # a generated file in the build tree.
   2160             if ($ddest eq $src_configdata || ! -f $ddest) {
   2161                 $ddest = cleanfile($buildd, $_, $blddir);
   2162                 if ($unified_info{rename}->{$ddest}) {
   2163                     $ddest = $unified_info{rename}->{$ddest};
   2164                 }
   2165             }
   2166             foreach (@{$includes{$dest}}) {
   2167                 my $is = cleandir($sourced, $_, $blddir);
   2168                 my $ib = cleandir($buildd, $_, $blddir);
   2169                 push @{$unified_info{includes}->{$ddest}->{source}}, $is
   2170                     unless grep { $_ eq $is } @{$unified_info{includes}->{$ddest}->{source}};
   2171                 push @{$unified_info{includes}->{$ddest}->{build}}, $ib
   2172                     unless grep { $_ eq $ib } @{$unified_info{includes}->{$ddest}->{build}};
   2173             }
   2174         }
   2175     }
   2176 
   2177     my $ordinals_text = join(', ', sort keys %ordinals);
   2178     warn <<"EOF" if $ordinals_text;
   2179 
   2180 WARNING: ORDINALS were specified for $ordinals_text
   2181 They are ignored and should be replaced with a combination of GENERATE,
   2182 DEPEND and SHARED_SOURCE.
   2183 EOF
   2184 
   2185     # Massage the result
   2186 
   2187     # If the user configured no-shared, we allow no shared sources
   2188     if ($disabled{shared}) {
   2189         foreach (keys %{$unified_info{shared_sources}}) {
   2190             foreach (keys %{$unified_info{shared_sources}->{$_}}) {
   2191                 delete $unified_info{sources}->{$_};
   2192             }
   2193         }
   2194         $unified_info{shared_sources} = {};
   2195     }
   2196 
   2197     # If we depend on a header file or a perl module, add an inclusion of
   2198     # its directory to allow smoothe inclusion
   2199     foreach my $dest (keys %{$unified_info{depends}}) {
   2200         next if $dest eq "";
   2201         foreach my $d (keys %{$unified_info{depends}->{$dest}}) {
   2202             next unless $d =~ /\.(h|pm)$/;
   2203             my $i = dirname($d);
   2204             my $spot =
   2205                 $d eq "configdata.pm" || defined($unified_info{generate}->{$d})
   2206                 ? 'build' : 'source';
   2207             push @{$unified_info{includes}->{$dest}->{$spot}}, $i
   2208                 unless grep { $_ eq $i } @{$unified_info{includes}->{$dest}->{$spot}};
   2209         }
   2210     }
   2211 
   2212     # Trickle down includes placed on libraries, engines and programs to
   2213     # their sources (i.e. object files)
   2214     foreach my $dest (keys %{$unified_info{engines}},
   2215                       keys %{$unified_info{libraries}},
   2216                       keys %{$unified_info{programs}}) {
   2217         foreach my $k (("source", "build")) {
   2218             next unless defined($unified_info{includes}->{$dest}->{$k});
   2219             my @incs = reverse @{$unified_info{includes}->{$dest}->{$k}};
   2220             foreach my $obj (grep /\.o$/,
   2221                              (keys %{$unified_info{sources}->{$dest} // {}},
   2222                               keys %{$unified_info{shared_sources}->{$dest} // {}})) {
   2223                 foreach my $inc (@incs) {
   2224                     unshift @{$unified_info{includes}->{$obj}->{$k}}, $inc
   2225                         unless grep { $_ eq $inc } @{$unified_info{includes}->{$obj}->{$k}};
   2226                 }
   2227             }
   2228         }
   2229         delete $unified_info{includes}->{$dest};
   2230     }
   2231 
   2232     ### Make unified_info a bit more efficient
   2233     # One level structures
   2234     foreach (("programs", "libraries", "engines", "scripts", "extra", "overrides")) {
   2235         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
   2236     }
   2237     # Two level structures
   2238     foreach my $l1 (("install", "sources", "shared_sources", "ldadd", "depends")) {
   2239         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
   2240             $unified_info{$l1}->{$l2} =
   2241                 [ sort keys %{$unified_info{$l1}->{$l2}} ];
   2242         }
   2243     }
   2244     # Includes
   2245     foreach my $dest (sort keys %{$unified_info{includes}}) {
   2246         if (defined($unified_info{includes}->{$dest}->{build})) {
   2247             my @source_includes = ();
   2248             @source_includes = ( @{$unified_info{includes}->{$dest}->{source}} )
   2249                 if defined($unified_info{includes}->{$dest}->{source});
   2250             $unified_info{includes}->{$dest} =
   2251                 [ @{$unified_info{includes}->{$dest}->{build}} ];
   2252             foreach my $inc (@source_includes) {
   2253                 push @{$unified_info{includes}->{$dest}}, $inc
   2254                     unless grep { $_ eq $inc } @{$unified_info{includes}->{$dest}};
   2255             }
   2256         } else {
   2257             $unified_info{includes}->{$dest} =
   2258                 [ @{$unified_info{includes}->{$dest}->{source}} ];
   2259         }
   2260     }
   2261 
   2262     # For convenience collect information regarding directories where
   2263     # files are generated, those generated files and the end product
   2264     # they end up in where applicable.  Then, add build rules for those
   2265     # directories
   2266     my %loopinfo = ( "lib" => [ @{$unified_info{libraries}} ],
   2267                      "dso" => [ @{$unified_info{engines}} ],
   2268                      "bin" => [ @{$unified_info{programs}} ],
   2269                      "script" => [ @{$unified_info{scripts}} ] );
   2270     foreach my $type (keys %loopinfo) {
   2271         foreach my $product (@{$loopinfo{$type}}) {
   2272             my %dirs = ();
   2273             my $pd = dirname($product);
   2274 
   2275             foreach (@{$unified_info{sources}->{$product} // []},
   2276                      @{$unified_info{shared_sources}->{$product} // []}) {
   2277                 my $d = dirname($_);
   2278 
   2279                 # We don't want to create targets for source directories
   2280                 # when building out of source
   2281                 next if ($config{sourcedir} ne $config{builddir}
   2282                              && $d =~ m|^\Q$config{sourcedir}\E|);
   2283                 # We already have a "test" target, and the current directory
   2284                 # is just silly to make a target for
   2285                 next if $d eq "test" || $d eq ".";
   2286 
   2287                 $dirs{$d} = 1;
   2288                 push @{$unified_info{dirinfo}->{$d}->{deps}}, $_
   2289                     if $d ne $pd;
   2290             }
   2291             foreach (keys %dirs) {
   2292                 push @{$unified_info{dirinfo}->{$_}->{products}->{$type}},
   2293                     $product;
   2294             }
   2295         }
   2296     }
   2297 }
   2298 
   2299 # For the schemes that need it, we provide the old *_obj configs
   2300 # from the *_asm_obj ones
   2301 foreach (grep /_(asm|aux)_src$/, keys %target) {
   2302     my $src = $_;
   2303     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
   2304     $target{$obj} = $target{$src};
   2305     $target{$obj} =~ s/\.[csS]\b/.o/g; # C and assembler
   2306     $target{$obj} =~ s/\.(cc|cpp)\b/_cc.o/g; # C++
   2307 }
   2308 
   2309 # Write down our configuration where it fits #########################
   2310 
   2311 print "Creating configdata.pm\n";
   2312 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
   2313 print OUT <<"EOF";
   2314 #! $config{HASHBANGPERL}
   2315 
   2316 package configdata;
   2317 
   2318 use strict;
   2319 use warnings;
   2320 
   2321 use Exporter;
   2322 #use vars qw(\@ISA \@EXPORT);
   2323 our \@ISA = qw(Exporter);
   2324 our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables);
   2325 
   2326 EOF
   2327 print OUT "our %config = (\n";
   2328 foreach (sort keys %config) {
   2329     if (ref($config{$_}) eq "ARRAY") {
   2330 	print OUT "  ", $_, " => [ ", join(", ",
   2331 					   map { quotify("perl", $_) }
   2332 					   @{$config{$_}}), " ],\n";
   2333     } elsif (ref($config{$_}) eq "HASH") {
   2334 	print OUT "  ", $_, " => {";
   2335         if (scalar keys %{$config{$_}} > 0) {
   2336             print OUT "\n";
   2337             foreach my $key (sort keys %{$config{$_}}) {
   2338                 print OUT "      ",
   2339                     join(" => ",
   2340                          quotify("perl", $key),
   2341                          defined $config{$_}->{$key}
   2342                              ? quotify("perl", $config{$_}->{$key})
   2343                              : "undef");
   2344                 print OUT ",\n";
   2345             }
   2346             print OUT "  ";
   2347         }
   2348         print OUT "},\n";
   2349     } else {
   2350 	print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
   2351     }
   2352 }
   2353 print OUT <<"EOF";
   2354 );
   2355 
   2356 EOF
   2357 print OUT "our %target = (\n";
   2358 foreach (sort keys %target) {
   2359     if (ref($target{$_}) eq "ARRAY") {
   2360 	print OUT "  ", $_, " => [ ", join(", ",
   2361 					   map { quotify("perl", $_) }
   2362 					   @{$target{$_}}), " ],\n";
   2363     } else {
   2364 	print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
   2365     }
   2366 }
   2367 print OUT <<"EOF";
   2368 );
   2369 
   2370 EOF
   2371 print OUT "our \%available_protocols = (\n";
   2372 print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
   2373 print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
   2374 print OUT <<"EOF";
   2375 );
   2376 
   2377 EOF
   2378 print OUT "our \@disablables = (\n";
   2379 foreach (@disablables) {
   2380     print OUT "  ", quotify("perl", $_), ",\n";
   2381 }
   2382 print OUT <<"EOF";
   2383 );
   2384 
   2385 EOF
   2386 print OUT "our \%disabled = (\n";
   2387 foreach (sort keys %disabled) {
   2388     print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
   2389 }
   2390 print OUT <<"EOF";
   2391 );
   2392 
   2393 EOF
   2394 print OUT "our %withargs = (\n";
   2395 foreach (sort keys %withargs) {
   2396     if (ref($withargs{$_}) eq "ARRAY") {
   2397 	print OUT "  ", $_, " => [ ", join(", ",
   2398 					   map { quotify("perl", $_) }
   2399 					   @{$withargs{$_}}), " ],\n";
   2400     } else {
   2401 	print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
   2402     }
   2403 }
   2404 print OUT <<"EOF";
   2405 );
   2406 
   2407 EOF
   2408 if ($builder eq "unified") {
   2409     my $recurse;
   2410     $recurse = sub {
   2411         my $indent = shift;
   2412         foreach (@_) {
   2413             if (ref $_ eq "ARRAY") {
   2414                 print OUT " "x$indent, "[\n";
   2415                 foreach (@$_) {
   2416                     $recurse->($indent + 4, $_);
   2417                 }
   2418                 print OUT " "x$indent, "],\n";
   2419             } elsif (ref $_ eq "HASH") {
   2420                 my %h = %$_;
   2421                 print OUT " "x$indent, "{\n";
   2422                 foreach (sort keys %h) {
   2423                     if (ref $h{$_} eq "") {
   2424                         print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
   2425                     } else {
   2426                         print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
   2427                         $recurse->($indent + 8, $h{$_});
   2428                     }
   2429                 }
   2430                 print OUT " "x$indent, "},\n";
   2431             } else {
   2432                 print OUT " "x$indent, quotify("perl", $_), ",\n";
   2433             }
   2434         }
   2435     };
   2436     print OUT "our %unified_info = (\n";
   2437     foreach (sort keys %unified_info) {
   2438         if (ref $unified_info{$_} eq "") {
   2439             print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
   2440         } else {
   2441             print OUT " "x4, quotify("perl", $_), " =>\n";
   2442             $recurse->(8, $unified_info{$_});
   2443         }
   2444     }
   2445     print OUT <<"EOF";
   2446 );
   2447 
   2448 EOF
   2449 }
   2450 print OUT
   2451     "# The following data is only used when this files is use as a script\n";
   2452 print OUT "my \@makevars = (\n";
   2453 foreach (sort keys %user) {
   2454     print OUT "    '",$_,"',\n";
   2455 }
   2456 print OUT ");\n";
   2457 print OUT "my \%disabled_info = (\n";
   2458 foreach my $what (sort keys %disabled_info) {
   2459     print OUT "    '$what' => {\n";
   2460     foreach my $info (sort keys %{$disabled_info{$what}}) {
   2461         if (ref $disabled_info{$what}->{$info} eq 'ARRAY') {
   2462             print OUT "        $info => [ ",
   2463                 join(', ', map { "'$_'" } @{$disabled_info{$what}->{$info}}),
   2464                 " ],\n";
   2465         } else {
   2466             print OUT "        $info => '", $disabled_info{$what}->{$info},
   2467                 "',\n";
   2468         }
   2469     }
   2470     print OUT "    },\n";
   2471 }
   2472 print OUT ");\n";
   2473 print OUT 'my @user_crossable = qw( ', join (' ', @user_crossable), " );\n";
   2474 print OUT << 'EOF';
   2475 # If run directly, we can give some answers, and even reconfigure
   2476 unless (caller) {
   2477     use Getopt::Long;
   2478     use File::Spec::Functions;
   2479     use File::Basename;
   2480     use Pod::Usage;
   2481 
   2482     my $here = dirname($0);
   2483 
   2484     my $dump = undef;
   2485     my $cmdline = undef;
   2486     my $options = undef;
   2487     my $target = undef;
   2488     my $envvars = undef;
   2489     my $makevars = undef;
   2490     my $buildparams = undef;
   2491     my $reconf = undef;
   2492     my $verbose = undef;
   2493     my $help = undef;
   2494     my $man = undef;
   2495     GetOptions('dump|d'                 => \$dump,
   2496                'command-line|c'         => \$cmdline,
   2497                'options|o'              => \$options,
   2498                'target|t'               => \$target,
   2499                'environment|e'          => \$envvars,
   2500                'make-variables|m'       => \$makevars,
   2501                'build-parameters|b'     => \$buildparams,
   2502                'reconfigure|reconf|r'   => \$reconf,
   2503                'verbose|v'              => \$verbose,
   2504                'help'                   => \$help,
   2505                'man'                    => \$man)
   2506         or die "Errors in command line arguments\n";
   2507 
   2508     unless ($dump || $cmdline || $options || $target || $envvars || $makevars
   2509             || $buildparams || $reconf || $verbose || $help || $man) {
   2510         print STDERR <<"_____";
   2511 You must give at least one option.
   2512 For more information, do '$0 --help'
   2513 _____
   2514         exit(2);
   2515     }
   2516 
   2517     if ($help) {
   2518         pod2usage(-exitval => 0,
   2519                   -verbose => 1);
   2520     }
   2521     if ($man) {
   2522         pod2usage(-exitval => 0,
   2523                   -verbose => 2);
   2524     }
   2525     if ($dump || $cmdline) {
   2526         print "\nCommand line (with current working directory = $here):\n\n";
   2527         print '    ',join(' ',
   2528                           $config{PERL},
   2529                           catfile($config{sourcedir}, 'Configure'),
   2530                           @{$config{perlargv}}), "\n";
   2531         print "\nPerl information:\n\n";
   2532         print '    ',$config{perl_cmd},"\n";
   2533         print '    ',$config{perl_version},' for ',$config{perl_archname},"\n";
   2534     }
   2535     if ($dump || $options) {
   2536         my $longest = 0;
   2537         my $longest2 = 0;
   2538         foreach my $what (@disablables) {
   2539             $longest = length($what) if $longest < length($what);
   2540             $longest2 = length($disabled{$what})
   2541                 if $disabled{$what} && $longest2 < length($disabled{$what});
   2542         }
   2543         print "\nEnabled features:\n\n";
   2544         foreach my $what (@disablables) {
   2545             print "    $what\n" unless $disabled{$what};
   2546         }
   2547         print "\nDisabled features:\n\n";
   2548         foreach my $what (@disablables) {
   2549             if ($disabled{$what}) {
   2550                 print "    $what", ' ' x ($longest - length($what) + 1),
   2551                     "[$disabled{$what}]", ' ' x ($longest2 - length($disabled{$what}) + 1);
   2552                 print $disabled_info{$what}->{macro}
   2553                     if $disabled_info{$what}->{macro};
   2554                 print ' (skip ',
   2555                     join(', ', @{$disabled_info{$what}->{skipped}}),
   2556                     ')'
   2557                     if $disabled_info{$what}->{skipped};
   2558                 print "\n";
   2559             }
   2560         }
   2561     }
   2562     if ($dump || $target) {
   2563         print "\nConfig target attributes:\n\n";
   2564         foreach (sort keys %target) {
   2565             next if $_ =~ m|^_| || $_ eq 'template';
   2566             my $quotify = sub {
   2567                 map { (my $x = $_) =~ s|([\\\$\@"])|\\$1|g; "\"$x\""} @_;
   2568             };
   2569             print '    ', $_, ' => ';
   2570             if (ref($target{$_}) eq "ARRAY") {
   2571                 print '[ ', join(', ', $quotify->(@{$target{$_}})), " ],\n";
   2572             } else {
   2573                 print $quotify->($target{$_}), ",\n"
   2574             }
   2575         }
   2576     }
   2577     if ($dump || $envvars) {
   2578         print "\nRecorded environment:\n\n";
   2579         foreach (sort keys %{$config{perlenv}}) {
   2580             print '    ',$_,' = ',($config{perlenv}->{$_} || ''),"\n";
   2581         }
   2582     }
   2583     if ($dump || $makevars) {
   2584         print "\nMakevars:\n\n";
   2585         foreach my $var (@makevars) {
   2586             my $prefix = '';
   2587             $prefix = $config{CROSS_COMPILE}
   2588                 if grep { $var eq $_ } @user_crossable;
   2589             $prefix //= '';
   2590             print '    ',$var,' ' x (16 - length $var),'= ',
   2591                 (ref $config{$var} eq 'ARRAY'
   2592                  ? join(' ', @{$config{$var}})
   2593                  : $prefix.$config{$var}),
   2594                 "\n"
   2595                 if defined $config{$var};
   2596         }
   2597 
   2598         my @buildfile = ($config{builddir}, $config{build_file});
   2599         unshift @buildfile, $here
   2600             unless file_name_is_absolute($config{builddir});
   2601         my $buildfile = canonpath(catdir(@buildfile));
   2602         print <<"_____";
   2603 
   2604 NOTE: These variables only represent the configuration view.  The build file
   2605 template may have processed these variables further, please have a look at the
   2606 build file for more exact data:
   2607     $buildfile
   2608 _____
   2609     }
   2610     if ($dump || $buildparams) {
   2611         my @buildfile = ($config{builddir}, $config{build_file});
   2612         unshift @buildfile, $here
   2613             unless file_name_is_absolute($config{builddir});
   2614         print "\nbuild file:\n\n";
   2615         print "    ", canonpath(catfile(@buildfile)),"\n";
   2616 
   2617         print "\nbuild file templates:\n\n";
   2618         foreach (@{$config{build_file_templates}}) {
   2619             my @tmpl = ($_);
   2620             unshift @tmpl, $here
   2621                 unless file_name_is_absolute($config{sourcedir});
   2622             print '    ',canonpath(catfile(@tmpl)),"\n";
   2623         }
   2624     }
   2625     if ($reconf) {
   2626         if ($verbose) {
   2627             print 'Reconfiguring with: ', join(' ',@{$config{perlargv}}), "\n";
   2628 	    foreach (sort keys %{$config{perlenv}}) {
   2629 	        print '    ',$_,' = ',($config{perlenv}->{$_} || ""),"\n";
   2630 	    }
   2631         }
   2632 
   2633         chdir $here;
   2634         exec $^X,catfile($config{sourcedir}, 'Configure'),'reconf';
   2635     }
   2636 }
   2637 
   2638 1;
   2639 
   2640 __END__
   2641 
   2642 =head1 NAME
   2643 
   2644 configdata.pm - configuration data for OpenSSL builds
   2645 
   2646 =head1 SYNOPSIS
   2647 
   2648 Interactive:
   2649 
   2650   perl configdata.pm [options]
   2651 
   2652 As data bank module:
   2653 
   2654   use configdata;
   2655 
   2656 =head1 DESCRIPTION
   2657 
   2658 This module can be used in two modes, interactively and as a module containing
   2659 all the data recorded by OpenSSL's Configure script.
   2660 
   2661 When used interactively, simply run it as any perl script, with at least one
   2662 option, and you will get the information you ask for.  See L</OPTIONS> below.
   2663 
   2664 When loaded as a module, you get a few databanks with useful information to
   2665 perform build related tasks.  The databanks are:
   2666 
   2667     %config             Configured things.
   2668     %target             The OpenSSL config target with all inheritances
   2669                         resolved.
   2670     %disabled           The features that are disabled.
   2671     @disablables        The list of features that can be disabled.
   2672     %withargs           All data given through --with-THING options.
   2673     %unified_info       All information that was computed from the build.info
   2674                         files.
   2675 
   2676 =head1 OPTIONS
   2677 
   2678 =over 4
   2679 
   2680 =item B<--help>
   2681 
   2682 Print a brief help message and exit.
   2683 
   2684 =item B<--man>
   2685 
   2686 Print the manual page and exit.
   2687 
   2688 =item B<--dump> | B<-d>
   2689 
   2690 Print all relevant configuration data.  This is equivalent to B<--command-line>
   2691 B<--options> B<--target> B<--environment> B<--make-variables>
   2692 B<--build-parameters>.
   2693 
   2694 =item B<--command-line> | B<-c>
   2695 
   2696 Print the current configuration command line.
   2697 
   2698 =item B<--options> | B<-o>
   2699 
   2700 Print the features, both enabled and disabled, and display defined macro and
   2701 skipped directories where applicable.
   2702 
   2703 =item B<--target> | B<-t>
   2704 
   2705 Print the config attributes for this config target.
   2706 
   2707 =item B<--environment> | B<-e>
   2708 
   2709 Print the environment variables and their values at the time of configuration.
   2710 
   2711 =item B<--make-variables> | B<-m>
   2712 
   2713 Print the main make variables generated in the current configuration
   2714 
   2715 =item B<--build-parameters> | B<-b>
   2716 
   2717 Print the build parameters, i.e. build file and build file templates.
   2718 
   2719 =item B<--reconfigure> | B<--reconf> | B<-r>
   2720 
   2721 Redo the configuration.
   2722 
   2723 =item B<--verbose> | B<-v>
   2724 
   2725 Verbose output.
   2726 
   2727 =back
   2728 
   2729 =cut
   2730 
   2731 EOF
   2732 close(OUT);
   2733 if ($builder_platform eq 'unix') {
   2734     my $mode = (0755 & ~umask);
   2735     chmod $mode, 'configdata.pm'
   2736         or warn sprintf("WARNING: Couldn't change mode for 'configdata.pm' to 0%03o: %s\n",$mode,$!);
   2737 }
   2738 
   2739 my %builders = (
   2740     unified => sub {
   2741         print 'Creating ',$target{build_file},"\n";
   2742         run_dofile(catfile($blddir, $target{build_file}),
   2743                    @{$config{build_file_templates}});
   2744     },
   2745     );
   2746 
   2747 $builders{$builder}->($builder_platform, @builder_opts);
   2748 
   2749 $SIG{__DIE__} = $orig_death_handler;
   2750 
   2751 print <<"EOF" if ($disabled{threads} eq "unavailable");
   2752 
   2753 The library could not be configured for supporting multi-threaded
   2754 applications as the compiler options required on this system are not known.
   2755 See file INSTALL for details if you need multi-threading.
   2756 EOF
   2757 
   2758 print <<"EOF" if ($no_shared_warn);
   2759 
   2760 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
   2761 platform, so we will pretend you gave the option 'no-pic', which also disables
   2762 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
   2763 or position independent code, please let us know (but please first make sure
   2764 you have tried with a current version of OpenSSL).
   2765 EOF
   2766 
   2767 print <<"EOF";
   2768 
   2769 **********************************************************************
   2770 ***                                                                ***
   2771 ***   OpenSSL has been successfully configured                     ***
   2772 ***                                                                ***
   2773 ***   If you encounter a problem while building, please open an    ***
   2774 ***   issue on GitHub <https://github.com/openssl/openssl/issues>  ***
   2775 ***   and include the output from the following command:           ***
   2776 ***                                                                ***
   2777 ***       perl configdata.pm --dump                                ***
   2778 ***                                                                ***
   2779 ***   (If you are new to OpenSSL, you might want to consult the    ***
   2780 ***   'Troubleshooting' section in the INSTALL file first)         ***
   2781 ***                                                                ***
   2782 **********************************************************************
   2783 EOF
   2784 
   2785 exit(0);
   2786 
   2787 ######################################################################
   2788 #
   2789 # Helpers and utility functions
   2790 #
   2791 
   2792 # Death handler, to print a helpful message in case of failure #######
   2793 #
   2794 sub death_handler {
   2795     die @_ if $^S;              # To prevent the added message in eval blocks
   2796     my $build_file = $target{build_file} // "build file";
   2797     my @message = ( <<"_____", @_ );
   2798 
   2799 Failure!  $build_file wasn't produced.
   2800 Please read INSTALL and associated NOTES files.  You may also have to look over
   2801 your available compiler tool chain or change your configuration.
   2802 
   2803 _____
   2804 
   2805     # Dying is terminal, so it's ok to reset the signal handler here.
   2806     $SIG{__DIE__} = $orig_death_handler;
   2807     die @message;
   2808 }
   2809 
   2810 # Configuration file reading #########################################
   2811 
   2812 # Note: All of the helper functions are for lazy evaluation.  They all
   2813 # return a CODE ref, which will return the intended value when evaluated.
   2814 # Thus, whenever there's mention of a returned value, it's about that
   2815 # intended value.
   2816 
   2817 # Helper function to implement conditional inheritance depending on the
   2818 # value of $disabled{asm}.  Used in inherit_from values as follows:
   2819 #
   2820 #      inherit_from => [ "template", asm("asm_tmpl") ]
   2821 #
   2822 sub asm {
   2823     my @x = @_;
   2824     sub {
   2825 	$disabled{asm} ? () : @x;
   2826     }
   2827 }
   2828 
   2829 # Helper function to implement conditional value variants, with a default
   2830 # plus additional values based on the value of $config{build_type}.
   2831 # Arguments are given in hash table form:
   2832 #
   2833 #       picker(default => "Basic string: ",
   2834 #              debug   => "debug",
   2835 #              release => "release")
   2836 #
   2837 # When configuring with --debug, the resulting string will be
   2838 # "Basic string: debug", and when not, it will be "Basic string: release"
   2839 #
   2840 # This can be used to create variants of sets of flags according to the
   2841 # build type:
   2842 #
   2843 #       cflags => picker(default => "-Wall",
   2844 #                        debug   => "-g -O0",
   2845 #                        release => "-O3")
   2846 #
   2847 sub picker {
   2848     my %opts = @_;
   2849     return sub { add($opts{default} || (),
   2850                      $opts{$config{build_type}} || ())->(); }
   2851 }
   2852 
   2853 # Helper function to combine several values of different types into one.
   2854 # This is useful if you want to combine a string with the result of a
   2855 # lazy function, such as:
   2856 #
   2857 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
   2858 #
   2859 sub combine {
   2860     my @stuff = @_;
   2861     return sub { add(@stuff)->(); }
   2862 }
   2863 
   2864 # Helper function to implement conditional values depending on the value
   2865 # of $disabled{threads}.  Can be used as follows:
   2866 #
   2867 #       cflags => combine("-Wall", threads("-pthread"))
   2868 #
   2869 sub threads {
   2870     my @flags = @_;
   2871     return sub { add($disabled{threads} ? () : @flags)->(); }
   2872 }
   2873 
   2874 sub shared {
   2875     my @flags = @_;
   2876     return sub { add($disabled{shared} ? () : @flags)->(); }
   2877 }
   2878 
   2879 our $add_called = 0;
   2880 # Helper function to implement adding values to already existing configuration
   2881 # values.  It handles elements that are ARRAYs, CODEs and scalars
   2882 sub _add {
   2883     my $separator = shift;
   2884 
   2885     # If there's any ARRAY in the collection of values OR the separator
   2886     # is undef, we will return an ARRAY of combined values, otherwise a
   2887     # string of joined values with $separator as the separator.
   2888     my $found_array = !defined($separator);
   2889 
   2890     my @values =
   2891 	map {
   2892 	    my $res = $_;
   2893 	    while (ref($res) eq "CODE") {
   2894 		$res = $res->();
   2895 	    }
   2896 	    if (defined($res)) {
   2897 		if (ref($res) eq "ARRAY") {
   2898 		    $found_array = 1;
   2899 		    @$res;
   2900 		} else {
   2901 		    $res;
   2902 		}
   2903 	    } else {
   2904 		();
   2905 	    }
   2906     } (@_);
   2907 
   2908     $add_called = 1;
   2909 
   2910     if ($found_array) {
   2911 	[ @values ];
   2912     } else {
   2913 	join($separator, grep { defined($_) && $_ ne "" } @values);
   2914     }
   2915 }
   2916 sub add_before {
   2917     my $separator = " ";
   2918     if (ref($_[$#_]) eq "HASH") {
   2919         my $opts = pop;
   2920         $separator = $opts->{separator};
   2921     }
   2922     my @x = @_;
   2923     sub { _add($separator, @x, @_) };
   2924 }
   2925 sub add {
   2926     my $separator = " ";
   2927     if (ref($_[$#_]) eq "HASH") {
   2928         my $opts = pop;
   2929         $separator = $opts->{separator};
   2930     }
   2931     my @x = @_;
   2932     sub { _add($separator, @_, @x) };
   2933 }
   2934 
   2935 sub read_eval_file {
   2936     my $fname = shift;
   2937     my $content;
   2938     my @result;
   2939 
   2940     open F, "< $fname" or die "Can't open '$fname': $!\n";
   2941     {
   2942         undef local $/;
   2943         $content = <F>;
   2944     }
   2945     close F;
   2946     {
   2947         local $@;
   2948 
   2949         @result = ( eval $content );
   2950         warn $@ if $@;
   2951     }
   2952     return wantarray ? @result : $result[0];
   2953 }
   2954 
   2955 # configuration reader, evaluates the input file as a perl script and expects
   2956 # it to fill %targets with target configurations.  Those are then added to
   2957 # %table.
   2958 sub read_config {
   2959     my $fname = shift;
   2960     my %targets;
   2961 
   2962     {
   2963 	# Protect certain tables from tampering
   2964 	local %table = ();
   2965 
   2966 	%targets = read_eval_file($fname);
   2967     }
   2968     my %preexisting = ();
   2969     foreach (sort keys %targets) {
   2970         $preexisting{$_} = 1 if $table{$_};
   2971     }
   2972     die <<"EOF",
   2973 The following config targets from $fname
   2974 shadow pre-existing config targets with the same name:
   2975 EOF
   2976         map { "  $_\n" } sort keys %preexisting
   2977         if %preexisting;
   2978 
   2979 
   2980     # For each target, check that it's configured with a hash table.
   2981     foreach (keys %targets) {
   2982 	if (ref($targets{$_}) ne "HASH") {
   2983 	    if (ref($targets{$_}) eq "") {
   2984 		warn "Deprecated target configuration for $_, ignoring...\n";
   2985 	    } else {
   2986 		warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
   2987 	    }
   2988 	    delete $targets{$_};
   2989 	} else {
   2990             $targets{$_}->{_conf_fname_int} = add([ $fname ]);
   2991         }
   2992     }
   2993 
   2994     %table = (%table, %targets);
   2995 
   2996 }
   2997 
   2998 # configuration resolver.  Will only resolve all the lazy evaluation
   2999 # codeblocks for the chosen target and all those it inherits from,
   3000 # recursively
   3001 sub resolve_config {
   3002     my $target = shift;
   3003     my @breadcrumbs = @_;
   3004 
   3005 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
   3006 
   3007     if (grep { $_ eq $target } @breadcrumbs) {
   3008 	die "inherit_from loop!  target backtrace:\n  "
   3009 	    ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
   3010     }
   3011 
   3012     if (!defined($table{$target})) {
   3013 	warn "Warning! target $target doesn't exist!\n";
   3014 	return ();
   3015     }
   3016     # Recurse through all inheritances.  They will be resolved on the
   3017     # fly, so when this operation is done, they will all just be a
   3018     # bunch of attributes with string values.
   3019     # What we get here, though, are keys with references to lists of
   3020     # the combined values of them all.  We will deal with lists after
   3021     # this stage is done.
   3022     my %combined_inheritance = ();
   3023     if ($table{$target}->{inherit_from}) {
   3024 	my @inherit_from =
   3025 	    map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
   3026 	foreach (@inherit_from) {
   3027 	    my %inherited_config = resolve_config($_, $target, @breadcrumbs);
   3028 
   3029 	    # 'template' is a marker that's considered private to
   3030 	    # the config that had it.
   3031 	    delete $inherited_config{template};
   3032 
   3033 	    foreach (keys %inherited_config) {
   3034 		if (!$combined_inheritance{$_}) {
   3035 		    $combined_inheritance{$_} = [];
   3036 		}
   3037 		push @{$combined_inheritance{$_}}, $inherited_config{$_};
   3038 	    }
   3039 	}
   3040     }
   3041 
   3042     # We won't need inherit_from in this target any more, since we've
   3043     # resolved all the inheritances that lead to this
   3044     delete $table{$target}->{inherit_from};
   3045 
   3046     # Now is the time to deal with those lists.  Here's the place to
   3047     # decide what shall be done with those lists, all based on the
   3048     # values of the target we're currently dealing with.
   3049     # - If a value is a coderef, it will be executed with the list of
   3050     #   inherited values as arguments.
   3051     # - If the corresponding key doesn't have a value at all or is the
   3052     #   empty string, the inherited value list will be run through the
   3053     #   default combiner (below), and the result becomes this target's
   3054     #   value.
   3055     # - Otherwise, this target's value is assumed to be a string that
   3056     #   will simply override the inherited list of values.
   3057     my $default_combiner = add();
   3058 
   3059     my %all_keys =
   3060 	map { $_ => 1 } (keys %combined_inheritance,
   3061 			 keys %{$table{$target}});
   3062 
   3063     sub process_values {
   3064 	my $object    = shift;
   3065 	my $inherited = shift;  # Always a [ list ]
   3066 	my $target    = shift;
   3067 	my $entry     = shift;
   3068 
   3069         $add_called = 0;
   3070 
   3071         while(ref($object) eq "CODE") {
   3072             $object = $object->(@$inherited);
   3073         }
   3074         if (!defined($object)) {
   3075             return ();
   3076         }
   3077         elsif (ref($object) eq "ARRAY") {
   3078             local $add_called;  # To make sure recursive calls don't affect it
   3079             return [ map { process_values($_, $inherited, $target, $entry) }
   3080                      @$object ];
   3081         } elsif (ref($object) eq "") {
   3082             return $object;
   3083         } else {
   3084             die "cannot handle reference type ",ref($object)
   3085                 ," found in target ",$target," -> ",$entry,"\n";
   3086         }
   3087     }
   3088 
   3089     foreach (sort keys %all_keys) {
   3090         my $previous = $combined_inheritance{$_};
   3091 
   3092 	# Current target doesn't have a value for the current key?
   3093 	# Assign it the default combiner, the rest of this loop body
   3094 	# will handle it just like any other coderef.
   3095 	if (!exists $table{$target}->{$_}) {
   3096 	    $table{$target}->{$_} = $default_combiner;
   3097 	}
   3098 
   3099 	$table{$target}->{$_} = process_values($table{$target}->{$_},
   3100 					       $combined_inheritance{$_},
   3101 					       $target, $_);
   3102         unless(defined($table{$target}->{$_})) {
   3103             delete $table{$target}->{$_};
   3104         }
   3105 #        if ($extra_checks &&
   3106 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
   3107 #            warn "$_ got replaced in $target\n";
   3108 #        }
   3109     }
   3110 
   3111     # Finally done, return the result.
   3112     return %{$table{$target}};
   3113 }
   3114 
   3115 sub usage
   3116 	{
   3117 	print STDERR $usage;
   3118 	print STDERR "\npick os/compiler from:\n";
   3119 	my $j=0;
   3120 	my $i;
   3121         my $k=0;
   3122 	foreach $i (sort keys %table)
   3123 		{
   3124 		next if $table{$i}->{template};
   3125 		next if $i =~ /^debug/;
   3126 		$k += length($i) + 1;
   3127 		if ($k > 78)
   3128 			{
   3129 			print STDERR "\n";
   3130 			$k=length($i);
   3131 			}
   3132 		print STDERR $i . " ";
   3133 		}
   3134 	foreach $i (sort keys %table)
   3135 		{
   3136 		next if $table{$i}->{template};
   3137 		next if $i !~ /^debug/;
   3138 		$k += length($i) + 1;
   3139 		if ($k > 78)
   3140 			{
   3141 			print STDERR "\n";
   3142 			$k=length($i);
   3143 			}
   3144 		print STDERR $i . " ";
   3145 		}
   3146 	print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
   3147 	exit(1);
   3148 	}
   3149 
   3150 sub run_dofile
   3151 {
   3152     my $out = shift;
   3153     my @templates = @_;
   3154 
   3155     unlink $out || warn "Can't remove $out, $!"
   3156         if -f $out;
   3157     foreach (@templates) {
   3158         die "Can't open $_, $!" unless -f $_;
   3159     }
   3160     my $perlcmd = (quotify("maybeshell", $config{PERL}))[0];
   3161     my $cmd = "$perlcmd \"-I.\" \"-Mconfigdata\" \"$dofile\" -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
   3162     #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
   3163     system($cmd);
   3164     exit 1 if $? != 0;
   3165     rename("$out.new", $out) || die "Can't rename $out.new, $!";
   3166 }
   3167 
   3168 sub compiler_predefined {
   3169     state %predefined;
   3170     my $cc = shift;
   3171 
   3172     return () if $^O eq 'VMS';
   3173 
   3174     die 'compiler_predefined called without a compiler command'
   3175         unless $cc;
   3176 
   3177     if (! $predefined{$cc}) {
   3178 
   3179         $predefined{$cc} = {};
   3180 
   3181         # collect compiler pre-defines from gcc or gcc-alike...
   3182         open(PIPE, "$cc -dM -E -x c /dev/null 2>&1 |");
   3183         while (my $l = <PIPE>) {
   3184             $l =~ m/^#define\s+(\w+(?:\(\w+\))?)(?:\s+(.+))?/ or last;
   3185             $predefined{$cc}->{$1} = $2 // '';
   3186         }
   3187         close(PIPE);
   3188     }
   3189 
   3190     return %{$predefined{$cc}};
   3191 }
   3192 
   3193 sub which
   3194 {
   3195     my ($name)=@_;
   3196 
   3197     if (eval { require IPC::Cmd; 1; }) {
   3198         IPC::Cmd->import();
   3199         return scalar IPC::Cmd::can_run($name);
   3200     } else {
   3201         # if there is $directories component in splitpath,
   3202         # then it's not something to test with $PATH...
   3203         return $name if (File::Spec->splitpath($name))[1];
   3204 
   3205         foreach (File::Spec->path()) {
   3206             my $fullpath = catfile($_, "$name$target{exe_extension}");
   3207             if (-f $fullpath and -x $fullpath) {
   3208                 return $fullpath;
   3209             }
   3210         }
   3211     }
   3212 }
   3213 
   3214 sub env
   3215 {
   3216     my $name = shift;
   3217     my %opts = @_;
   3218 
   3219     unless ($opts{cacheonly}) {
   3220         # Note that if $ENV{$name} doesn't exist or is undefined,
   3221         # $config{perlenv}->{$name} will be created with the value
   3222         # undef.  This is intentional.
   3223 
   3224         $config{perlenv}->{$name} = $ENV{$name}
   3225             if ! exists $config{perlenv}->{$name};
   3226     }
   3227     return $config{perlenv}->{$name};
   3228 }
   3229 
   3230 # Configuration printer ##############################################
   3231 
   3232 sub print_table_entry
   3233 {
   3234     local $now_printing = shift;
   3235     my %target = resolve_config($now_printing);
   3236     my $type = shift;
   3237 
   3238     # Don't print the templates
   3239     return if $target{template};
   3240 
   3241     my @sequence = (
   3242 	"sys_id",
   3243 	"cpp",
   3244 	"cppflags",
   3245 	"defines",
   3246 	"includes",
   3247 	"cc",
   3248 	"cflags",
   3249 	"unistd",
   3250 	"ld",
   3251 	"lflags",
   3252 	"loutflag",
   3253 	"ex_libs",
   3254 	"bn_ops",
   3255 	"apps_aux_src",
   3256 	"cpuid_asm_src",
   3257 	"uplink_aux_src",
   3258 	"bn_asm_src",
   3259 	"ec_asm_src",
   3260 	"des_asm_src",
   3261 	"aes_asm_src",
   3262 	"bf_asm_src",
   3263 	"md5_asm_src",
   3264 	"cast_asm_src",
   3265 	"sha1_asm_src",
   3266 	"rc4_asm_src",
   3267 	"rmd160_asm_src",
   3268 	"rc5_asm_src",
   3269 	"wp_asm_src",
   3270 	"cmll_asm_src",
   3271 	"modes_asm_src",
   3272 	"padlock_asm_src",
   3273 	"chacha_asm_src",
   3274 	"poly1035_asm_src",
   3275 	"thread_scheme",
   3276 	"perlasm_scheme",
   3277 	"dso_scheme",
   3278 	"shared_target",
   3279 	"shared_cflag",
   3280 	"shared_defines",
   3281 	"shared_ldflag",
   3282 	"shared_rcflag",
   3283 	"shared_extension",
   3284 	"dso_extension",
   3285 	"obj_extension",
   3286 	"exe_extension",
   3287 	"ranlib",
   3288 	"ar",
   3289 	"arflags",
   3290 	"aroutflag",
   3291 	"rc",
   3292 	"rcflags",
   3293 	"rcoutflag",
   3294 	"mt",
   3295 	"mtflags",
   3296 	"mtinflag",
   3297 	"mtoutflag",
   3298 	"multilib",
   3299 	"build_scheme",
   3300 	);
   3301 
   3302     if ($type eq "TABLE") {
   3303 	print "\n";
   3304 	print "*** $now_printing\n";
   3305         foreach (@sequence) {
   3306             if (ref($target{$_}) eq "ARRAY") {
   3307                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
   3308             } else {
   3309                 printf "\$%-12s = %s\n", $_, $target{$_};
   3310             }
   3311         }
   3312     } elsif ($type eq "HASH") {
   3313 	my $largest =
   3314 	    length((sort { length($a) <=> length($b) } @sequence)[-1]);
   3315 	print "    '$now_printing' => {\n";
   3316 	foreach (@sequence) {
   3317 	    if ($target{$_}) {
   3318                 if (ref($target{$_}) eq "ARRAY") {
   3319                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
   3320                 } else {
   3321                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
   3322                 }
   3323 	    }
   3324 	}
   3325 	print "    },\n";
   3326     }
   3327 }
   3328 
   3329 # Utility routines ###################################################
   3330 
   3331 # On VMS, if the given file is a logical name, File::Spec::Functions
   3332 # will consider it an absolute path.  There are cases when we want a
   3333 # purely syntactic check without checking the environment.
   3334 sub isabsolute {
   3335     my $file = shift;
   3336 
   3337     # On non-platforms, we just use file_name_is_absolute().
   3338     return file_name_is_absolute($file) unless $^O eq "VMS";
   3339 
   3340     # If the file spec includes a device or a directory spec,
   3341     # file_name_is_absolute() is perfectly safe.
   3342     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
   3343 
   3344     # Here, we know the given file spec isn't absolute
   3345     return 0;
   3346 }
   3347 
   3348 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
   3349 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
   3350 # realpath() requires that at least all path components except the last is an
   3351 # existing directory.  On VMS, the last component of the directory spec must
   3352 # exist.
   3353 sub absolutedir {
   3354     my $dir = shift;
   3355 
   3356     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
   3357     # will return the volume name for the device, no matter what.  Also,
   3358     # it will return an incorrect directory spec if the argument is a
   3359     # directory that doesn't exist.
   3360     if ($^O eq "VMS") {
   3361         return rel2abs($dir);
   3362     }
   3363 
   3364     # We use realpath() on Unix, since no other will properly clean out
   3365     # a directory spec.
   3366     use Cwd qw/realpath/;
   3367 
   3368     return realpath($dir);
   3369 }
   3370 
   3371 sub quotify {
   3372     my %processors = (
   3373 	perl    => sub { my $x = shift;
   3374 			 $x =~ s/([\\\$\@"])/\\$1/g;
   3375 			 return '"'.$x.'"'; },
   3376 	maybeshell => sub { my $x = shift;
   3377 			    (my $y = $x) =~ s/([\\\"])/\\$1/g;
   3378 			    if ($x ne $y || $x =~ m|\s|) {
   3379 				return '"'.$y.'"';
   3380 			    } else {
   3381 				return $x;
   3382 			    }
   3383 			},
   3384 	);
   3385     my $for = shift;
   3386     my $processor =
   3387 	defined($processors{$for}) ? $processors{$for} : sub { shift; };
   3388 
   3389     return map { $processor->($_); } @_;
   3390 }
   3391 
   3392 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
   3393 # $filename is a file name to read from
   3394 # $line_concat_cond_re is a regexp detecting a line continuation ending
   3395 # $line_concat is a CODEref that takes care of concatenating two lines
   3396 sub collect_from_file {
   3397     my $filename = shift;
   3398     my $line_concat_cond_re = shift;
   3399     my $line_concat = shift;
   3400 
   3401     open my $fh, $filename || die "unable to read $filename: $!\n";
   3402     return sub {
   3403         my $saved_line = "";
   3404         $_ = "";
   3405         while (<$fh>) {
   3406             s|\R$||;
   3407             if (defined $line_concat) {
   3408                 $_ = $line_concat->($saved_line, $_);
   3409                 $saved_line = "";
   3410             }
   3411             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
   3412                 $saved_line = $_;
   3413                 next;
   3414             }
   3415             return $_;
   3416         }
   3417         die "$filename ending with continuation line\n" if $_;
   3418         close $fh;
   3419         return undef;
   3420     }
   3421 }
   3422 
   3423 # collect_from_array($array, $line_concat_cond_re, $line_concat)
   3424 # $array is an ARRAYref of lines
   3425 # $line_concat_cond_re is a regexp detecting a line continuation ending
   3426 # $line_concat is a CODEref that takes care of concatenating two lines
   3427 sub collect_from_array {
   3428     my $array = shift;
   3429     my $line_concat_cond_re = shift;
   3430     my $line_concat = shift;
   3431     my @array = (@$array);
   3432 
   3433     return sub {
   3434         my $saved_line = "";
   3435         $_ = "";
   3436         while (defined($_ = shift @array)) {
   3437             s|\R$||;
   3438             if (defined $line_concat) {
   3439                 $_ = $line_concat->($saved_line, $_);
   3440                 $saved_line = "";
   3441             }
   3442             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
   3443                 $saved_line = $_;
   3444                 next;
   3445             }
   3446             return $_;
   3447         }
   3448         die "input text ending with continuation line\n" if $_;
   3449         return undef;
   3450     }
   3451 }
   3452 
   3453 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
   3454 # $lineiterator is a CODEref that delivers one line at a time.
   3455 # All following arguments are regex/CODEref pairs, where the regexp detects a
   3456 # line and the CODEref does something with the result of the regexp.
   3457 sub collect_information {
   3458     my $lineiterator = shift;
   3459     my %collectors = @_;
   3460 
   3461     while(defined($_ = $lineiterator->())) {
   3462         s|\R$||;
   3463         my $found = 0;
   3464         if ($collectors{"BEFORE"}) {
   3465             $collectors{"BEFORE"}->($_);
   3466         }
   3467         foreach my $re (keys %collectors) {
   3468             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
   3469                 $collectors{$re}->($lineiterator);
   3470                 $found = 1;
   3471             };
   3472         }
   3473         if ($collectors{"OTHERWISE"}) {
   3474             $collectors{"OTHERWISE"}->($lineiterator, $_)
   3475                 unless $found || !defined $collectors{"OTHERWISE"};
   3476         }
   3477         if ($collectors{"AFTER"}) {
   3478             $collectors{"AFTER"}->($_);
   3479         }
   3480     }
   3481 }
   3482 
   3483 # tokenize($line)
   3484 # $line is a line of text to split up into tokens
   3485 # returns a list of tokens
   3486 #
   3487 # Tokens are divided by spaces.  If the tokens include spaces, they
   3488 # have to be quoted with single or double quotes.  Double quotes
   3489 # inside a double quoted token must be escaped.  Escaping is done
   3490 # with backslash.
   3491 # Basically, the same quoting rules apply for " and ' as in any
   3492 # Unix shell.
   3493 sub tokenize {
   3494     my $line = my $debug_line = shift;
   3495     my @result = ();
   3496 
   3497     while ($line =~ s|^\s+||, $line ne "") {
   3498         my $token = "";
   3499         while ($line ne "" && $line !~ m|^\s|) {
   3500             if ($line =~ m/^"((?:[^"\\]+|\\.)*)"/) {
   3501                 $token .= $1;
   3502                 $line = $';
   3503             } elsif ($line =~ m/^'([^']*)'/) {
   3504                 $token .= $1;
   3505                 $line = $';
   3506             } elsif ($line =~ m/^(\S+)/) {
   3507                 $token .= $1;
   3508                 $line = $';
   3509             }
   3510         }
   3511         push @result, $token;
   3512     }
   3513 
   3514     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
   3515 	print STDERR "DEBUG[tokenize]: Parsed '$debug_line' into:\n";
   3516 	print STDERR "DEBUG[tokenize]: ('", join("', '", @result), "')\n";
   3517     }
   3518     return @result;
   3519 }
   3520