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Configure revision 1.1.1.19
      1 #! /usr/bin/env perl
      2 # -*- mode: perl; -*-
      3 # Copyright 2016 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 File::Basename;
     15 use File::Spec::Functions qw/:DEFAULT abs2rel rel2abs/;
     16 use File::Path qw/mkpath/;
     17 use if $^O ne "VMS", 'File::Glob' => qw/glob/;
     18 
     19 # see INSTALL for instructions.
     20 
     21 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";
     22 
     23 # Options:
     24 #
     25 # --config      add the given configuration file, which will be read after
     26 #               any "Configurations*" files that are found in the same
     27 #               directory as this script.
     28 # --prefix      prefix for the OpenSSL installation, which includes the
     29 #               directories bin, lib, include, share/man, share/doc/openssl
     30 #               This becomes the value of INSTALLTOP in Makefile
     31 #               (Default: /usr/local)
     32 # --openssldir  OpenSSL data area, such as openssl.cnf, certificates and keys.
     33 #               If it's a relative directory, it will be added on the directory
     34 #               given with --prefix.
     35 #               This becomes the value of OPENSSLDIR in Makefile and in C.
     36 #               (Default: PREFIX/ssl)
     37 #
     38 # --cross-compile-prefix Add specified prefix to binutils components.
     39 #
     40 # --api         One of 0.9.8, 1.0.0 or 1.1.0.  Do not compile support for
     41 #               interfaces deprecated as of the specified OpenSSL version.
     42 #
     43 # no-hw-xxx     do not compile support for specific crypto hardware.
     44 #               Generic OpenSSL-style methods relating to this support
     45 #               are always compiled but return NULL if the hardware
     46 #               support isn't compiled.
     47 # no-hw         do not compile support for any crypto hardware.
     48 # [no-]threads  [don't] try to create a library that is suitable for
     49 #               multithreaded applications (default is "threads" if we
     50 #               know how to do it)
     51 # [no-]shared	[don't] try to create shared libraries when supported.
     52 # [no-]pic      [don't] try to build position independent code when supported.
     53 #               If disabled, it also disables shared and dynamic-engine.
     54 # no-asm        do not use assembler
     55 # no-dso        do not compile in any native shared-library methods. This
     56 #               will ensure that all methods just return NULL.
     57 # no-egd        do not compile support for the entropy-gathering daemon APIs
     58 # [no-]zlib     [don't] compile support for zlib compression.
     59 # zlib-dynamic	Like "zlib", but the zlib library is expected to be a shared
     60 #		library and will be loaded in run-time by the OpenSSL library.
     61 # sctp          include SCTP support
     62 # enable-weak-ssl-ciphers
     63 #               Enable weak ciphers that are disabled by default.
     64 # 386           generate 80386 code in assembly modules
     65 # no-sse2       disables IA-32 SSE2 code in assembly modules, the above
     66 #               mentioned '386' option implies this one
     67 # no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
     68 # -<xxx> +<xxx> compiler options are passed through
     69 # -static       while -static is also a pass-through compiler option (and
     70 #               as such is limited to environments where it's actually
     71 #               meaningful), it triggers a number configuration options,
     72 #               namely no-dso, no-pic, no-shared and no-threads. It is
     73 #               argued that the only reason to produce statically linked
     74 #               binaries (and in context it means executables linked with
     75 #               -static flag, and not just executables linked with static
     76 #               libcrypto.a) is to eliminate dependency on specific run-time,
     77 #               a.k.a. libc version. The mentioned config options are meant
     78 #               to achieve just that. Unfortunately on Linux it's impossible
     79 #               to eliminate the dependency completely for openssl executable
     80 #               because of getaddrinfo and gethostbyname calls, which can
     81 #               invoke dynamically loadable library facility anyway to meet
     82 #               the lookup requests. For this reason on Linux statically
     83 #               linked openssl executable has rather debugging value than
     84 #               production quality.
     85 #
     86 # DEBUG_SAFESTACK use type-safe stacks to enforce type-safety on stack items
     87 #		provided to stack calls. Generates unique stack functions for
     88 #		each possible stack type.
     89 # BN_LLONG	use the type 'long long' in crypto/bn/bn.h
     90 # RC4_CHAR	use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
     91 # Following are set automatically by this script
     92 #
     93 # MD5_ASM	use some extra md5 assembler,
     94 # SHA1_ASM	use some extra sha1 assembler, must define L_ENDIAN for x86
     95 # RMD160_ASM	use some extra ripemd160 assembler,
     96 # SHA256_ASM	sha256_block is implemented in assembler
     97 # SHA512_ASM	sha512_block is implemented in assembler
     98 # AES_ASM	AES_[en|de]crypt is implemented in assembler
     99 
    100 # Minimum warning options... any contributions to OpenSSL should at least get
    101 # past these.
    102 
    103 # DEBUG_UNUSED enables __owur (warn unused result) checks.
    104 my $gcc_devteam_warn = "-DDEBUG_UNUSED"
    105         # -DPEDANTIC complements -pedantic and is meant to mask code that
    106         # is not strictly standard-compliant and/or implementation-specific,
    107         # e.g. inline assembly, disregards to alignment requirements, such
    108         # that -pedantic would complain about. Incidentally -DPEDANTIC has
    109         # to be used even in sanitized builds, because sanitizer too is
    110         # supposed to and does take notice of non-standard behaviour. Then
    111         # -pedantic with pre-C9x compiler would also complain about 'long
    112         # long' not being supported. As 64-bit algorithms are common now,
    113         # it grew impossible to resolve this without sizeable additional
    114         # code, so we just tell compiler to be pedantic about everything
    115         # but 'long long' type.
    116         . " -DPEDANTIC -pedantic -Wno-long-long"
    117         . " -Wall"
    118         . " -Wextra"
    119         . " -Wno-unused-parameter"
    120         . " -Wno-missing-field-initializers"
    121         . " -Wsign-compare"
    122         . " -Wmissing-prototypes"
    123         . " -Wshadow"
    124         . " -Wformat"
    125         . " -Wtype-limits"
    126         . " -Wundef"
    127         . " -Werror"
    128         ;
    129 
    130 # These are used in addition to $gcc_devteam_warn when the compiler is clang.
    131 # TODO(openssl-team): fix problems and investigate if (at least) the
    132 # following warnings can also be enabled:
    133 #       -Wswitch-enum
    134 #       -Wcast-align
    135 #       -Wunreachable-code
    136 #       -Wlanguage-extension-token -- no, we use asm()
    137 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
    138 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
    139 my $clang_devteam_warn = ""
    140         . " -Qunused-arguments"
    141         . " -Wno-language-extension-token"
    142         . " -Wno-extended-offsetof"
    143         . " -Wconditional-uninitialized"
    144         . " -Wincompatible-pointer-types-discards-qualifiers"
    145         . " -Wmissing-variable-declarations"
    146         ;
    147 
    148 # This adds backtrace information to the memory leak info.  Is only used
    149 # when crypto-mdebug-backtrace is enabled.
    150 my $memleak_devteam_backtrace = "-rdynamic";
    151 
    152 my $strict_warnings = 0;
    153 
    154 # As for $BSDthreads. Idea is to maintain "collective" set of flags,
    155 # which would cover all BSD flavors. -pthread applies to them all,
    156 # but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
    157 # -lc_r, which is sufficient. FreeBSD 4.x expands it as -lc_r,
    158 # which has to be accompanied by explicit -D_THREAD_SAFE and
    159 # sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
    160 # seems to be sufficient?
    161 our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
    162 
    163 #
    164 # API compatibility name to version number mapping.
    165 #
    166 my $maxapi = "1.1.0";           # API for "no-deprecated" builds
    167 my $apitable = {
    168     "1.1.0" => "0x10100000L",
    169     "1.0.0" => "0x10000000L",
    170     "0.9.8" => "0x00908000L",
    171 };
    172 
    173 our %table = ();
    174 our %config = ();
    175 our %withargs = ();
    176 
    177 # Forward declarations ###############################################
    178 
    179 # read_config(filename)
    180 #
    181 # Reads a configuration file and populates %table with the contents
    182 # (which the configuration file places in %targets).
    183 sub read_config;
    184 
    185 # resolve_config(target)
    186 #
    187 # Resolves all the late evaluations, inheritances and so on for the
    188 # chosen target and any target it inherits from.
    189 sub resolve_config;
    190 
    191 
    192 # Information collection #############################################
    193 
    194 # Unified build supports separate build dir
    195 my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
    196 my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
    197 my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));
    198 
    199 my $local_config_envname = 'OPENSSL_LOCAL_CONFIG_DIR';
    200 
    201 $config{sourcedir} = abs2rel($srcdir);
    202 $config{builddir} = abs2rel($blddir);
    203 
    204 # Collect reconfiguration information if needed
    205 my @argvcopy=@ARGV;
    206 
    207 if (grep /^reconf(igure)?$/, @argvcopy) {
    208     if (-f "./configdata.pm") {
    209 	my $file = "./configdata.pm";
    210 	unless (my $return = do $file) {
    211 	    die "couldn't parse $file: $@" if $@;
    212             die "couldn't do $file: $!"    unless defined $return;
    213             die "couldn't run $file"       unless $return;
    214 	}
    215 
    216 	@argvcopy = defined($configdata::config{perlargv}) ?
    217 	    @{$configdata::config{perlargv}} : ();
    218 	die "Incorrect data to reconfigure, please do a normal configuration\n"
    219 	    if (grep(/^reconf/,@argvcopy));
    220 	$ENV{CROSS_COMPILE} = $configdata::config{cross_compile_prefix}
    221 	    if defined($configdata::config{cross_compile_prefix});
    222 	$ENV{CC} = $configdata::config{cc}
    223 	    if defined($configdata::config{cc});
    224 	$ENV{BUILDFILE} = $configdata::config{build_file}
    225 	    if defined($configdata::config{build_file});
    226 	$ENV{$local_config_envname} = $configdata::config{local_config_dir}
    227 	    if defined($configdata::config{local_config_dir});
    228 
    229 	print "Reconfiguring with: ", join(" ",@argvcopy), "\n";
    230 	print "    CROSS_COMPILE = ",$ENV{CROSS_COMPILE},"\n"
    231 	    if $ENV{CROSS_COMPILE};
    232 	print "    CC = ",$ENV{CC},"\n" if $ENV{CC};
    233 	print "    BUILDFILE = ",$ENV{BUILDFILE},"\n" if $ENV{BUILDFILE};
    234 	print "    $local_config_envname = ",$ENV{$local_config_envname},"\n"
    235 	    if $ENV{$local_config_envname};
    236     } else {
    237 	die "Insufficient data to reconfigure, please do a normal configuration\n";
    238     }
    239 }
    240 
    241 $config{perlargv} = [ @argvcopy ];
    242 
    243 # Collect version numbers
    244 $config{version} = "unknown";
    245 $config{version_num} = "unknown";
    246 $config{shlib_version_number} = "unknown";
    247 $config{shlib_version_history} = "unknown";
    248 
    249 collect_information(
    250     collect_from_file(catfile($srcdir,'include/openssl/opensslv.h')),
    251     qr/OPENSSL.VERSION.TEXT.*OpenSSL (\S+) / => sub { $config{version} = $1; },
    252     qr/OPENSSL.VERSION.NUMBER.*(0x\S+)/	     => sub { $config{version_num}=$1 },
    253     qr/SHLIB_VERSION_NUMBER *"([^"]+)"/	     => sub { $config{shlib_version_number}=$1 },
    254     qr/SHLIB_VERSION_HISTORY *"([^"]*)"/     => sub { $config{shlib_version_history}=$1 }
    255     );
    256 if ($config{shlib_version_history} ne "") { $config{shlib_version_history} .= ":"; }
    257 
    258 ($config{major}, $config{minor})
    259     = ($config{version} =~ /^([0-9]+)\.([0-9\.]+)/);
    260 ($config{shlib_major}, $config{shlib_minor})
    261     = ($config{shlib_version_number} =~ /^([0-9]+)\.([0-9\.]+)/);
    262 die "erroneous version information in opensslv.h: ",
    263     "$config{major}, $config{minor}, $config{shlib_major}, $config{shlib_minor}\n"
    264     if ($config{major} eq "" || $config{minor} eq ""
    265 	|| $config{shlib_major} eq "" ||  $config{shlib_minor} eq "");
    266 
    267 # Collect target configurations
    268 
    269 my $pattern = catfile(dirname($0), "Configurations", "*.conf");
    270 foreach (sort glob($pattern)) {
    271     &read_config($_);
    272 }
    273 
    274 if (defined $ENV{$local_config_envname}) {
    275     if ($^O eq 'VMS') {
    276         # VMS environment variables are logical names,
    277         # which can be used as is
    278         $pattern = $local_config_envname . ':' . '*.conf';
    279     } else {
    280         $pattern = catfile($ENV{$local_config_envname}, '*.conf');
    281     }
    282 
    283     foreach (sort glob($pattern)) {
    284         &read_config($_);
    285     }
    286 }
    287 
    288 
    289 print "Configuring OpenSSL version $config{version} ($config{version_num})\n";
    290 
    291 $config{prefix}="";
    292 $config{openssldir}="";
    293 $config{processor}="";
    294 $config{libdir}="";
    295 $config{cross_compile_prefix}="";
    296 $config{fipslibdir}="/usr/local/ssl/fips-2.0/lib/";
    297 my $nofipscanistercheck=0;
    298 $config{baseaddr}="0xFB00000";
    299 my $auto_threads=1;    # enable threads automatically? true by default
    300 my $default_ranlib;
    301 $config{fips}=0;
    302 
    303 # Top level directories to build
    304 $config{dirs} = [ "crypto", "ssl", "engines", "apps", "test", "util", "tools", "fuzz" ];
    305 # crypto/ subdirectories to build
    306 $config{sdirs} = [
    307     "objects",
    308     "md2", "md4", "md5", "sha", "mdc2", "hmac", "ripemd", "whrlpool", "poly1305", "blake2",
    309     "des", "aes", "rc2", "rc4", "rc5", "idea", "bf", "cast", "camellia", "seed", "chacha", "modes",
    310     "bn", "ec", "rsa", "dsa", "dh", "dso", "engine",
    311     "buffer", "bio", "stack", "lhash", "rand", "err",
    312     "evp", "asn1", "pem", "x509", "x509v3", "conf", "txt_db", "pkcs7", "pkcs12", "comp", "ocsp", "ui",
    313     "cms", "ts", "srp", "cmac", "ct", "async", "kdf"
    314     ];
    315 
    316 # Known TLS and DTLS protocols
    317 my @tls = qw(ssl3 tls1 tls1_1 tls1_2);
    318 my @dtls = qw(dtls1 dtls1_2);
    319 
    320 # Explicitly known options that are possible to disable.  They can
    321 # be regexps, and will be used like this: /^no-${option}$/
    322 # For developers: keep it sorted alphabetically
    323 
    324 my @disablables = (
    325     "afalgeng",
    326     "asan",
    327     "asm",
    328     "async",
    329     "autoalginit",
    330     "autoerrinit",
    331     "bf",
    332     "blake2",
    333     "camellia",
    334     "capieng",
    335     "cast",
    336     "chacha",
    337     "cmac",
    338     "cms",
    339     "comp",
    340     "crypto-mdebug",
    341     "crypto-mdebug-backtrace",
    342     "ct",
    343     "deprecated",
    344     "des",
    345     "dgram",
    346     "dh",
    347     "dsa",
    348     "dso",
    349     "dtls",
    350     "dynamic-engine",
    351     "ec",
    352     "ec2m",
    353     "ecdh",
    354     "ecdsa",
    355     "ec_nistp_64_gcc_128",
    356     "egd",
    357     "engine",
    358     "err",
    359     "filenames",
    360     "fuzz-libfuzzer",
    361     "fuzz-afl",
    362     "gost",
    363     "heartbeats",
    364     "hw(-.+)?",
    365     "idea",
    366     "makedepend",
    367     "md2",
    368     "md4",
    369     "mdc2",
    370     "msan",
    371     "multiblock",
    372     "nextprotoneg",
    373     "ocb",
    374     "ocsp",
    375     "pic",
    376     "poly1305",
    377     "posix-io",
    378     "psk",
    379     "rc2",
    380     "rc4",
    381     "rc5",
    382     "rdrand",
    383     "rfc3779",
    384     "rmd160",
    385     "scrypt",
    386     "sctp",
    387     "seed",
    388     "shared",
    389     "sock",
    390     "srp",
    391     "srtp",
    392     "sse2",
    393     "ssl",
    394     "ssl-trace",
    395     "static-engine",
    396     "stdio",
    397     "threads",
    398     "tls",
    399     "ts",
    400     "ubsan",
    401     "ui",
    402     "unit-test",
    403     "whirlpool",
    404     "weak-ssl-ciphers",
    405     "zlib",
    406     "zlib-dynamic",
    407     );
    408 foreach my $proto ((@tls, @dtls))
    409 	{
    410 	push(@disablables, $proto);
    411 	push(@disablables, "$proto-method");
    412 	}
    413 
    414 my %deprecated_disablables = (
    415     "ssl2" => undef,
    416     "buf-freelists" => undef,
    417     "ripemd" => "rmd160"
    418     );
    419 
    420 # All of the following is disabled by default (RC5 was enabled before 0.9.8):
    421 
    422 our %disabled = ( # "what"         => "comment"
    423                   "asan"		=> "default",
    424 		  "crypto-mdebug"       => "default",
    425 		  "crypto-mdebug-backtrace" => "default",
    426 		  "ec_nistp_64_gcc_128" => "default",
    427 		  "egd"                 => "default",
    428 		  "fuzz-libfuzzer"	=> "default",
    429 		  "fuzz-afl"		=> "default",
    430 		  "heartbeats"          => "default",
    431 		  "md2"                 => "default",
    432                   "msan"                => "default",
    433 		  "rc5"                 => "default",
    434 		  "sctp"                => "default",
    435 		  "ssl-trace"           => "default",
    436 		  "ssl3"                => "default",
    437 		  "ssl3-method"         => "default",
    438                   "ubsan"		=> "default",
    439 		  "unit-test"           => "default",
    440 		  "weak-ssl-ciphers"    => "default",
    441 		  "zlib"                => "default",
    442 		  "zlib-dynamic"        => "default",
    443 		);
    444 
    445 # Note: => pair form used for aesthetics, not to truly make a hash table
    446 my @disable_cascades = (
    447     # "what"		=> [ "cascade", ... ]
    448     sub { $config{processor} eq "386" }
    449 			=> [ "sse2" ],
    450     "ssl"		=> [ "ssl3" ],
    451     "ssl3-method"	=> [ "ssl3" ],
    452     "zlib"		=> [ "zlib-dynamic" ],
    453     "des"		=> [ "mdc2" ],
    454     "ec"		=> [ "ecdsa", "ecdh" ],
    455 
    456     "dgram"		=> [ "dtls", "sctp" ],
    457     "sock"		=> [ "dgram" ],
    458     "dtls"		=> [ @dtls ],
    459     sub { 0 == scalar grep { !$disabled{$_} } @dtls }
    460 			=> [ "dtls" ],
    461 
    462     # SSL 3.0, (D)TLS 1.0 and TLS 1.1 require MD5 and SHA
    463     "md5"		=> [ "ssl", "tls1", "tls1_1", "dtls1" ],
    464     "sha"		=> [ "ssl", "tls1", "tls1_1", "dtls1" ],
    465 
    466     # Additionally, SSL 3.0 requires either RSA or DSA+DH
    467     sub { $disabled{rsa}
    468 	  && ($disabled{dsa} || $disabled{dh}); }
    469 			=> [ "ssl" ],
    470 
    471     # (D)TLS 1.0 and TLS 1.1 also require either RSA or DSA+DH
    472     # or ECDSA + ECDH.  (D)TLS 1.2 has this requirement as well.
    473     # (XXX: We don't support PSK-only builds).
    474     sub { $disabled{rsa}
    475 	  && ($disabled{dsa} || $disabled{dh})
    476 	  && ($disabled{ecdsa} || $disabled{ecdh}); }
    477 			=> [ "tls1", "tls1_1", "tls1_2",
    478 			     "dtls1", "dtls1_2" ],
    479 
    480     "tls"		=> [ @tls ],
    481     sub { 0 == scalar grep { !$disabled{$_} } @tls }
    482 			=> [ "tls" ],
    483 
    484     # SRP and HEARTBEATS require TLSEXT
    485     "tlsext"		=> [ "srp", "heartbeats" ],
    486 
    487     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
    488 
    489     # Without DSO, we can't load dynamic engines, so don't build them dynamic
    490     "dso"               => [ "dynamic-engine" ],
    491 
    492     # Without position independent code, there can be no shared libraries or DSOs
    493     "pic"               => [ "shared" ],
    494     "shared"            => [ "dynamic-engine" ],
    495     "engine"            => [ "afalgeng" ],
    496 
    497     # no-autoalginit is only useful when building non-shared
    498     "autoalginit"       => [ "shared", "apps" ],
    499 
    500     "stdio"             => [ "apps", "capieng", "egd" ],
    501     "apps"              => [ "tests" ],
    502     "comp"		=> [ "zlib" ],
    503     sub { !$disabled{"unit-test"} } => [ "heartbeats" ],
    504 
    505     sub { !$disabled{"msan"} } => [ "asm" ],
    506     );
    507 
    508 # Avoid protocol support holes.  Also disable all versions below N, if version
    509 # N is disabled while N+1 is enabled.
    510 #
    511 my @list = (reverse @tls);
    512 while ((my $first, my $second) = (shift @list, shift @list)) {
    513     last unless @list;
    514     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
    515 			      => [ @list ] );
    516     unshift @list, $second;
    517 }
    518 my @list = (reverse @dtls);
    519 while ((my $first, my $second) = (shift @list, shift @list)) {
    520     last unless @list;
    521     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
    522 			      => [ @list ] );
    523     unshift @list, $second;
    524 }
    525 
    526 # Explicit "no-..." options will be collected in %disabled along with the defaults.
    527 # To remove something from %disabled, use "enable-foo".
    528 # For symmetry, "disable-foo" is a synonym for "no-foo".
    529 
    530 my $no_sse2=0;
    531 
    532 &usage if ($#ARGV < 0);
    533 
    534 my $user_cflags="";
    535 my @user_defines=();
    536 $config{openssl_api_defines}=[];
    537 $config{openssl_algorithm_defines}=[];
    538 $config{openssl_thread_defines}=[];
    539 $config{openssl_sys_defines}=[];
    540 $config{openssl_other_defines}=[];
    541 my $libs="";
    542 my $target="";
    543 $config{options}="";
    544 $config{build_type} = "release";
    545 
    546 my %unsupported_options = ();
    547 my %deprecated_options = ();
    548 while (@argvcopy)
    549 	{
    550 	$_ = shift @argvcopy;
    551 	# VMS is a case insensitive environment, and depending on settings
    552 	# out of our control, we may receive options uppercased.  Let's
    553 	# downcase at least the part before any equal sign.
    554 	if ($^O eq "VMS")
    555 		{
    556 		s/^([^=]*)/lc($1)/e;
    557 		}
    558 	s /^-no-/no-/; # some people just can't read the instructions
    559 
    560 	# rewrite some options in "enable-..." form
    561 	s /^-?-?shared$/enable-shared/;
    562 	s /^sctp$/enable-sctp/;
    563 	s /^threads$/enable-threads/;
    564 	s /^zlib$/enable-zlib/;
    565 	s /^zlib-dynamic$/enable-zlib-dynamic/;
    566 
    567         if (/^(no|disable|enable)-(.+)$/)
    568                 {
    569                 my $word = $2;
    570                 if (!exists $deprecated_disablables{$word}
    571                         && !grep { $word =~ /^${_}$/ } @disablables)
    572                         {
    573                         $unsupported_options{$_} = 1;
    574                         next;
    575                         }
    576                 }
    577         if (/^no-(.+)$/ || /^disable-(.+)$/)
    578                 {
    579                 foreach my $proto ((@tls, @dtls))
    580                         {
    581                         if ($1 eq "$proto-method")
    582                                 {
    583                                 $disabled{"$proto"} = "option($proto-method)";
    584                                 last;
    585                                 }
    586                         }
    587                 if ($1 eq "dtls")
    588                         {
    589                         foreach my $proto (@dtls)
    590                                 {
    591                                 $disabled{$proto} = "option(dtls)";
    592                                 }
    593                         $disabled{"dtls"} = "option(dtls)";
    594                         }
    595                 elsif ($1 eq "ssl")
    596                         {
    597                         # Last one of its kind
    598                         $disabled{"ssl3"} = "option(ssl)";
    599                         }
    600                 elsif ($1 eq "tls")
    601                         {
    602                         # XXX: Tests will fail if all SSL/TLS
    603                         # protocols are disabled.
    604                         foreach my $proto (@tls)
    605                                 {
    606                                 $disabled{$proto} = "option(tls)";
    607                                 }
    608                         }
    609                 elsif ($1 eq "static-engine")
    610                         {
    611                         delete $disabled{"dynamic-engine"};
    612                         }
    613                 elsif ($1 eq "dynamic-engine")
    614                         {
    615                         $disabled{"dynamic-engine"} = "option";
    616                         }
    617                 elsif (exists $deprecated_disablables{$1})
    618                         {
    619                         $deprecated_options{$_} = 1;
    620                         if (defined $deprecated_disablables{$1})
    621                                 {
    622                                 $disabled{$deprecated_disablables{$1}} = "option";
    623                                 }
    624                         }
    625                 else
    626                         {
    627                         $disabled{$1} = "option";
    628                         }
    629 		# No longer an automatic choice
    630 		$auto_threads = 0 if ($1 eq "threads");
    631 		}
    632 	elsif (/^enable-(.+)$/)
    633 		{
    634                 if ($1 eq "static-engine")
    635                         {
    636                         $disabled{"dynamic-engine"} = "option";
    637                         }
    638                 elsif ($1 eq "dynamic-engine")
    639                         {
    640                         delete $disabled{"dynamic-engine"};
    641                         }
    642                 elsif ($1 eq "zlib-dynamic")
    643                         {
    644                         delete $disabled{"zlib"};
    645                         }
    646 		my $algo = $1;
    647 		delete $disabled{$algo};
    648 
    649 		# No longer an automatic choice
    650 		$auto_threads = 0 if ($1 eq "threads");
    651 		}
    652 	elsif (/^--strict-warnings$/)
    653 		{
    654 		$strict_warnings = 1;
    655 		}
    656 	elsif (/^--debug$/)
    657 		{
    658 		$config{build_type} = "debug";
    659 		}
    660 	elsif (/^--release$/)
    661 		{
    662 		$config{build_type} = "release";
    663 		}
    664 	elsif (/^386$/)
    665 		{ $config{processor}=386; }
    666 	elsif (/^fips$/)
    667 		{
    668 		$config{fips}=1;
    669 		}
    670 	elsif (/^rsaref$/)
    671 		{
    672 		# No RSAref support any more since it's not needed.
    673 		# The check for the option is there so scripts aren't
    674 		# broken
    675 		}
    676 	elsif (/^nofipscanistercheck$/)
    677 		{
    678 		$config{fips} = 1;
    679 		$nofipscanistercheck = 1;
    680 		}
    681 	elsif (/^[-+]/)
    682 		{
    683 		if (/^--prefix=(.*)$/)
    684 			{
    685 			$config{prefix}=$1;
    686 			die "Directory given with --prefix MUST be absolute\n"
    687 				unless file_name_is_absolute($config{prefix});
    688 			}
    689 		elsif (/^--api=(.*)$/)
    690 			{
    691 			$config{api}=$1;
    692 			}
    693 		elsif (/^--libdir=(.*)$/)
    694 			{
    695 			$config{libdir}=$1;
    696 			}
    697 		elsif (/^--openssldir=(.*)$/)
    698 			{
    699 			$config{openssldir}=$1;
    700 			}
    701 		elsif (/^--with-zlib-lib=(.*)$/)
    702 			{
    703 			$withargs{zlib_lib}=$1;
    704 			}
    705 		elsif (/^--with-zlib-include=(.*)$/)
    706 			{
    707 			$withargs{zlib_include}=$1;
    708 			}
    709 		elsif (/^--with-fuzzer-lib=(.*)$/)
    710 			{
    711 			$withargs{fuzzer_lib}=$1;
    712 			}
    713 		elsif (/^--with-fuzzer-include=(.*)$/)
    714 			{
    715 			$withargs{fuzzer_include}=$1;
    716 			}
    717 		elsif (/^--with-fipslibdir=(.*)$/)
    718 			{
    719 			$config{fipslibdir}="$1/";
    720 			}
    721 		elsif (/^--with-baseaddr=(.*)$/)
    722 			{
    723 			$config{baseaddr}="$1";
    724 			}
    725 		elsif (/^--cross-compile-prefix=(.*)$/)
    726 			{
    727 			$config{cross_compile_prefix}=$1;
    728 			}
    729 		elsif (/^--config=(.*)$/)
    730 			{
    731 			read_config $1;
    732 			}
    733 		elsif (/^-[lL](.*)$/ or /^-Wl,/)
    734 			{
    735 			$libs.=$_." ";
    736 			}
    737 		elsif (/^-rpath$/ or /^-R$/)
    738 			# -rpath is the OSF1 rpath flag
    739 			# -R is the old Solaris rpath flag
    740 			{
    741 			my $rpath = shift(@argvcopy) || "";
    742 			$rpath .= " " if $rpath ne "";
    743 			$libs.=$_." ".$rpath;
    744 			}
    745 		elsif (/^-static$/)
    746 			{
    747 			$libs.=$_." ";
    748 			$disabled{"dso"} = "forced";
    749 			$disabled{"pic"} = "forced";
    750 			$disabled{"shared"} = "forced";
    751 			$disabled{"threads"} = "forced";
    752 			}
    753 		elsif (/^-D(.*)$/)
    754 			{
    755 			push @user_defines, $1;
    756 			}
    757 		else	# common if (/^[-+]/), just pass down...
    758 			{
    759 			$_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
    760 			$user_cflags.=" ".$_;
    761 			}
    762 		}
    763 	else
    764 		{
    765 		die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
    766 		$target=$_;
    767 		}
    768 	unless ($_ eq $target || /^no-/ || /^disable-/)
    769 		{
    770 		# "no-..." follows later after implied disactivations
    771 		# have been derived.  (Don't take this too seriously,
    772 		# we really only write OPTIONS to the Makefile out of
    773 		# nostalgia.)
    774 
    775 		if ($config{options} eq "")
    776 			{ $config{options} = $_; }
    777 		else
    778 			{ $config{options} .= " ".$_; }
    779 		}
    780 
    781         if (defined($config{api}) && !exists $apitable->{$config{api}}) {
    782 		die "***** Unsupported api compatibility level: $config{api}\n",
    783         }
    784 
    785 	if (keys %deprecated_options)
    786 		{
    787 		warn "***** Deprecated options: ",
    788 			join(", ", keys %deprecated_options), "\n";
    789 		}
    790 	if (keys %unsupported_options)
    791 		{
    792 		die "***** Unsupported options: ",
    793 			join(", ", keys %unsupported_options), "\n";
    794 		}
    795 	}
    796 
    797 if ($libs =~ /(^|\s)-Wl,-rpath,/
    798     && !$disabled{shared}
    799     && !($disabled{asan} && $disabled{msan} && $disabled{ubsan})) {
    800     die "***** Cannot simultaneously use -rpath, shared libraries, and\n",
    801 	"***** any of asan, msan or ubsan\n";
    802 }
    803 
    804 if ($config{fips})
    805 	{
    806 	delete $disabled{"shared"} if ($disabled{"shared"} =~ /^default/);
    807 	}
    808 else
    809 	{
    810 	@{$config{dirs}} = grep !/^fips$/, @{$config{dirs}};
    811 	}
    812 
    813 my @tocheckfor = (keys %disabled);
    814 while (@tocheckfor) {
    815     my %new_tocheckfor = ();
    816     my @cascade_copy = (@disable_cascades);
    817     while (@cascade_copy) {
    818 	my ($test, $descendents) = (shift @cascade_copy, shift @cascade_copy);
    819 	if (ref($test) eq "CODE" ? $test->() : defined($disabled{$test})) {
    820 	    foreach(grep { !defined($disabled{$_}) } @$descendents) {
    821 		$new_tocheckfor{$_} = 1; $disabled{$_} = "forced";
    822 	    }
    823 	}
    824     }
    825     @tocheckfor = (keys %new_tocheckfor);
    826 }
    827 
    828 our $die = sub { die @_; };
    829 if ($target eq "TABLE") {
    830     local $die = sub { warn @_; };
    831     foreach (sort keys %table) {
    832 	print_table_entry($_, "TABLE");
    833     }
    834     exit 0;
    835 }
    836 
    837 if ($target eq "LIST") {
    838     foreach (sort keys %table) {
    839 	print $_,"\n" unless $table{$_}->{template};
    840     }
    841     exit 0;
    842 }
    843 
    844 if ($target eq "HASH") {
    845     local $die = sub { warn @_; };
    846     print "%table = (\n";
    847     foreach (sort keys %table) {
    848 	print_table_entry($_, "HASH");
    849     }
    850     exit 0;
    851 }
    852 
    853 # Backward compatibility?
    854 if ($target =~ m/^CygWin32(-.*)$/) {
    855     $target = "Cygwin".$1;
    856 }
    857 
    858 foreach (sort (keys %disabled))
    859 	{
    860 	$config{options} .= " no-$_";
    861 
    862 	printf "    no-%-12s %-10s", $_, "[$disabled{$_}]";
    863 
    864 	if (/^dso$/)
    865 		{ }
    866 	elsif (/^threads$/)
    867 		{ }
    868 	elsif (/^shared$/)
    869 		{ }
    870 	elsif (/^pic$/)
    871 		{ }
    872 	elsif (/^zlib$/)
    873 		{ }
    874 	elsif (/^dynamic-engine$/)
    875 		{ }
    876 	elsif (/^makedepend$/)
    877 		{ }
    878 	elsif (/^zlib-dynamic$/)
    879 		{ }
    880 	elsif (/^sse2$/)
    881 		{ $no_sse2 = 1; }
    882 	elsif (/^engine$/)
    883 		{
    884 		@{$config{dirs}} = grep !/^engines$/, @{$config{dirs}};
    885 		@{$config{sdirs}} = grep !/^engine$/, @{$config{sdirs}};
    886 		push @{$config{openssl_other_defines}}, "OPENSSL_NO_ENGINE";
    887 		print " OPENSSL_NO_ENGINE (skip engines)";
    888 		}
    889 	else
    890 		{
    891 		my ($WHAT, $what);
    892 
    893 		($WHAT = $what = $_) =~ tr/[\-a-z]/[_A-Z]/;
    894 
    895 		# Fix up C macro end names
    896 		$WHAT = "RMD160" if $what eq "ripemd";
    897 
    898 		# fix-up crypto/directory name(s)
    899 		$what = "ripemd" if $what eq "rmd160";
    900 		$what = "whrlpool" if $what eq "whirlpool";
    901 
    902 		if ($what ne "async" && $what ne "err"
    903 		    && grep { $_ eq $what } @{$config{sdirs}})
    904 			{
    905 			push @{$config{openssl_algorithm_defines}}, "OPENSSL_NO_$WHAT";
    906 			@{$config{sdirs}} = grep { $_ ne $what} @{$config{sdirs}};
    907 
    908 			print " OPENSSL_NO_$WHAT (skip dir)";
    909 			}
    910 		else
    911 			{
    912 			push @{$config{openssl_other_defines}}, "OPENSSL_NO_$WHAT";
    913 			print " OPENSSL_NO_$WHAT";
    914 
    915 			if (/^err$/)	{ push @user_defines, "OPENSSL_NO_ERR"; }
    916 			}
    917 		}
    918 
    919 	print "\n";
    920 	}
    921 
    922 print "Configuring for $target\n";
    923 
    924 # Support for legacy targets having a name starting with 'debug-'
    925 my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
    926 if ($d) {
    927     $config{build_type} = "debug";
    928 
    929     # If we do not find debug-foo in the table, the target is set to foo.
    930     if (!$table{$target}) {
    931 	$target = $t;
    932     }
    933 }
    934 $config{target} = $target;
    935 my %target = resolve_config($target);
    936 
    937 &usage if (!%target || $target{template});
    938 
    939 my %conf_files = map { $_ => 1 } (@{$target{_conf_fname_int}});
    940 $config{conf_files} = [ sort keys %conf_files ];
    941 %target = ( %{$table{DEFAULTS}}, %target );
    942 
    943 $target{exe_extension}="";
    944 $target{exe_extension}=".exe" if ($config{target} eq "DJGPP"
    945                                   || $config{target} =~ /^(?:Cygwin|mingw)/);
    946 $target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
    947 
    948 ($target{shared_extension_simple}=$target{shared_extension})
    949     =~ s|\.\$\(SHLIB_MAJOR\)\.\$\(SHLIB_MINOR\)||;
    950 $target{dso_extension}=$target{shared_extension_simple};
    951 ($target{shared_import_extension}=$target{shared_extension_simple}.".a")
    952     if ($config{target} =~ /^(?:Cygwin|mingw)/);
    953 
    954 
    955 $config{cross_compile_prefix} = $ENV{'CROSS_COMPILE'}
    956     if $config{cross_compile_prefix} eq "";
    957 
    958 # Allow overriding the names of some tools.  USE WITH CARE
    959 # Note: only Unix cares about HASHBANGPERL...  that explains
    960 # the default string.
    961 $config{perl} =    $ENV{'PERL'}    || ($^O ne "VMS" ? $^X : "perl");
    962 $config{hashbangperl} =
    963     $ENV{'HASHBANGPERL'}           || $ENV{'PERL'}     || "/usr/bin/env perl";
    964 $target{cc} =      $ENV{'CC'}      || $target{cc}      || "cc";
    965 $target{ranlib} =  $ENV{'RANLIB'}  || $target{ranlib}  ||
    966                    (which("$config{cross_compile_prefix}ranlib") ?
    967                           "\$(CROSS_COMPILE)ranlib" : "true");
    968 $target{ar} =      $ENV{'AR'}      || $target{ar}      || "ar";
    969 $target{nm} =      $ENV{'NM'}      || $target{nm}      || "nm";
    970 $target{rc} =
    971     $ENV{'RC'}  || $ENV{'WINDRES'} || $target{rc}      || "windres";
    972 
    973 # Allow overriding the build file name
    974 $target{build_file} = $ENV{BUILDFILE} || $target{build_file} || "Makefile";
    975 
    976 # Cache information necessary for reconfiguration
    977 $config{cc} = $target{cc};
    978 $config{build_file} = $target{build_file};
    979 
    980 # For cflags, lflags, plib_lflags, ex_libs and defines, add the debug_
    981 # or release_ attributes.
    982 # Do it in such a way that no spurious space is appended (hence the grep).
    983 $config{defines} = [];
    984 $config{cflags} = "";
    985 $config{ex_libs} = "";
    986 $config{shared_ldflag} = "";
    987 
    988 # Make sure build_scheme is consistent.
    989 $target{build_scheme} = [ $target{build_scheme} ]
    990     if ref($target{build_scheme}) ne "ARRAY";
    991 
    992 my ($builder, $builder_platform, @builder_opts) =
    993     @{$target{build_scheme}};
    994 
    995 foreach my $checker (($builder_platform."-".$target{build_file}."-checker.pm",
    996                       $builder_platform."-checker.pm")) {
    997     my $checker_path = catfile($srcdir, "Configurations", $checker);
    998     if (-f $checker_path) {
    999         my $fn = $ENV{CONFIGURE_CHECKER_WARN}
   1000             ? sub { warn $@; } : sub { die $@; };
   1001         if (! do $checker_path) {
   1002             if ($@) {
   1003                 $fn->($@);
   1004             } elsif ($!) {
   1005                 $fn->($!);
   1006             } else {
   1007                 $fn->("The detected tools didn't match the platform\n");
   1008             }
   1009         }
   1010         last;
   1011     }
   1012 }
   1013 
   1014 push @{$config{defines}}, "NDEBUG"    if $config{build_type} eq "release";
   1015 
   1016 if ($target =~ /^mingw/ && `$target{cc} --target-help 2>&1` =~ m/-mno-cygwin/m)
   1017 	{
   1018 	$config{cflags} .= " -mno-cygwin";
   1019 	$config{shared_ldflag} .= " -mno-cygwin";
   1020 	}
   1021 
   1022 if ($target =~ /linux.*-mips/ && !$disabled{asm} && $user_cflags !~ /-m(ips|arch=)/) {
   1023 	# minimally required architecture flags for assembly modules
   1024 	$config{cflags}="-mips2 $config{cflags}" if ($target =~ /mips32/);
   1025 	$config{cflags}="-mips3 $config{cflags}" if ($target =~ /mips64/);
   1026 }
   1027 
   1028 my $no_shared_warn=0;
   1029 my $no_user_cflags=0;
   1030 my $no_user_defines=0;
   1031 
   1032 # The DSO code currently always implements all functions so that no
   1033 # applications will have to worry about that from a compilation point
   1034 # of view. However, the "method"s may return zero unless that platform
   1035 # has support compiled in for them. Currently each method is enabled
   1036 # by a define "DSO_<name>" ... we translate the "dso_scheme" config
   1037 # string entry into using the following logic;
   1038 if (!$disabled{dso} && $target{dso_scheme} ne "")
   1039 	{
   1040 	$target{dso_scheme} =~ tr/[a-z]/[A-Z]/;
   1041 	if ($target{dso_scheme} eq "DLFCN")
   1042 		{
   1043 		unshift @{$config{defines}}, "DSO_DLFCN", "HAVE_DLFCN_H";
   1044 		}
   1045 	elsif ($target{dso_scheme} eq "DLFCN_NO_H")
   1046 		{
   1047 		unshift @{$config{defines}}, "DSO_DLFCN";
   1048 		}
   1049 	else
   1050 		{
   1051 		unshift @{$config{defines}}, "DSO_$target{dso_scheme}";
   1052 		}
   1053 	}
   1054 
   1055 $config{ex_libs}="$libs$config{ex_libs}" if ($libs ne "");
   1056 
   1057 if ($disabled{asm})
   1058 	{
   1059 	if ($config{fips})
   1060 		{
   1061 		@{$config{defines}} = grep !/^[BL]_ENDIAN$/, @{$config{defines}};
   1062 		@{$target{defines}} = grep !/^[BL]_ENDIAN$/, @{$target{defines}};
   1063 		}
   1064 	}
   1065 
   1066 # If threads aren't disabled, check how possible they are
   1067 unless ($disabled{threads}) {
   1068     if ($auto_threads) {
   1069         # Enabled by default, disable it forcibly if unavailable
   1070         if ($target{thread_scheme} eq "(unknown)") {
   1071             $disabled{threads} = "unavailable";
   1072         }
   1073     } else {
   1074         # The user chose to enable threads explicitly, let's see
   1075         # if there's a chance that's possible
   1076         if ($target{thread_scheme} eq "(unknown)") {
   1077             # If the user asked for "threads" and we don't have internal
   1078             # knowledge how to do it, [s]he is expected to provide any
   1079             # system-dependent compiler options that are necessary.  We
   1080             # can't truly check that the given options are correct, but
   1081             # we expect the user to know what [s]He is doing.
   1082             if ($no_user_cflags && $no_user_defines) {
   1083                 die "You asked for multi-threading support, but didn't\n"
   1084                     ,"provide any system-specific compiler options\n";
   1085             }
   1086         }
   1087     }
   1088 }
   1089 
   1090 # If threads still aren't disabled, add a C macro to ensure the source
   1091 # code knows about it.  Any other flag is taken care of by the configs.
   1092 unless($disabled{threads}) {
   1093     foreach (("defines", "openssl_thread_defines")) {
   1094         push @{$config{$_}}, "OPENSSL_THREADS";
   1095     }
   1096 }
   1097 
   1098 # With "deprecated" disable all deprecated features.
   1099 if (defined($disabled{"deprecated"})) {
   1100         $config{api} = $maxapi;
   1101 }
   1102 
   1103 if ($target{shared_target} eq "")
   1104 	{
   1105 	$no_shared_warn = 1
   1106 	    if ((!$disabled{shared} || !$disabled{"dynamic-engine"})
   1107 		&& !$config{fips});
   1108 	$disabled{shared} = "no-shared-target";
   1109 	$disabled{pic} = $disabled{shared} = $disabled{"dynamic-engine"} =
   1110 	    "no-shared-target";
   1111 	}
   1112 
   1113 if ($disabled{"dynamic-engine"}) {
   1114         push @{$config{defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
   1115         $config{dynamic_engines} = 0;
   1116 } else {
   1117         push @{$config{defines}}, "OPENSSL_NO_STATIC_ENGINE";
   1118         $config{dynamic_engines} = 1;
   1119 }
   1120 
   1121 unless ($disabled{"fuzz-libfuzzer"}) {
   1122     $config{cflags} .= "-fsanitize-coverage=edge,indirect-calls ";
   1123 }
   1124 
   1125 unless ($disabled{asan}) {
   1126     $config{cflags} .= "-fsanitize=address ";
   1127 }
   1128 
   1129 unless ($disabled{ubsan}) {
   1130     # -DPEDANTIC or -fnosanitize=alignment may also be required on some
   1131     # platforms.
   1132     $config{cflags} .= "-fsanitize=undefined -fno-sanitize-recover=all ";
   1133 }
   1134 
   1135 unless ($disabled{msan}) {
   1136   $config{cflags} .= "-fsanitize=memory ";
   1137 }
   1138 
   1139 unless ($disabled{"fuzz-libfuzzer"} && $disabled{"fuzz-afl"}
   1140         && $disabled{asan} && $disabled{ubsan} && $disabled{msan}) {
   1141     $config{cflags} .= "-fno-omit-frame-pointer -g ";
   1142 }
   1143 #
   1144 # Platform fix-ups
   1145 #
   1146 
   1147 # This saves the build files from having to check
   1148 if ($disabled{pic})
   1149 	{
   1150 	$target{shared_cflag} = $target{shared_ldflag} =
   1151 		$target{shared_rcflag} = "";
   1152 	}
   1153 else
   1154 	{
   1155 	push @{$config{defines}}, "OPENSSL_PIC";
   1156 	}
   1157 
   1158 if ($target{sys_id} ne "")
   1159 	{
   1160 	push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
   1161 	}
   1162 
   1163 unless ($disabled{asm}) {
   1164     $target{cpuid_asm_src}=$table{DEFAULTS}->{cpuid_asm_src} if ($config{processor} eq "386");
   1165     $target{bn_asm_src} =~ s/\w+-gf2m.c// if (defined($disabled{ec2m}));
   1166 
   1167     # bn-586 is the only one implementing bn_*_part_words
   1168     push @{$config{defines}}, "OPENSSL_BN_ASM_PART_WORDS" if ($target{bn_asm_src} =~ /bn-586/);
   1169     push @{$config{defines}}, "OPENSSL_IA32_SSE2" if (!$no_sse2 && $target{bn_asm_src} =~ /86/);
   1170 
   1171     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT" if ($target{bn_asm_src} =~ /-mont/);
   1172     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT5" if ($target{bn_asm_src} =~ /-mont5/);
   1173     push @{$config{defines}}, "OPENSSL_BN_ASM_GF2m" if ($target{bn_asm_src} =~ /-gf2m/);
   1174 
   1175     if ($config{fips}) {
   1176 	push @{$config{openssl_other_defines}}, "OPENSSL_FIPS";
   1177     }
   1178 
   1179     if ($target{sha1_asm_src}) {
   1180 	push @{$config{defines}}, "SHA1_ASM"   if ($target{sha1_asm_src} =~ /sx86/ || $target{sha1_asm_src} =~ /sha1/);
   1181 	push @{$config{defines}}, "SHA256_ASM" if ($target{sha1_asm_src} =~ /sha256/);
   1182 	push @{$config{defines}}, "SHA512_ASM" if ($target{sha1_asm_src} =~ /sha512/);
   1183     }
   1184     if ($target{rc4_asm_src} ne $table{DEFAULTS}->{rc4_asm_src}) {
   1185 	push @{$config{defines}}, "RC4_ASM";
   1186     }
   1187     if ($target{md5_asm_src}) {
   1188 	push @{$config{defines}}, "MD5_ASM";
   1189     }
   1190     $target{cast_asm_src}=$table{DEFAULTS}->{cast_asm_src} unless $disabled{pic}; # CAST assembler is not PIC
   1191     if ($target{rmd160_asm_src}) {
   1192 	push @{$config{defines}}, "RMD160_ASM";
   1193     }
   1194     if ($target{aes_asm_src}) {
   1195 	push @{$config{defines}}, "AES_ASM" if ($target{aes_asm_src} =~ m/\baes-/);;
   1196 	# aes-ctr.fake is not a real file, only indication that assembler
   1197 	# module implements AES_ctr32_encrypt...
   1198 	push @{$config{defines}}, "AES_CTR_ASM" if ($target{aes_asm_src} =~ s/\s*aes-ctr\.fake//);
   1199 	# aes-xts.fake indicates presence of AES_xts_[en|de]crypt...
   1200 	push @{$config{defines}}, "AES_XTS_ASM" if ($target{aes_asm_src} =~ s/\s*aes-xts\.fake//);
   1201 	$target{aes_asm_src} =~ s/\s*(vpaes|aesni)-x86\.s//g if ($no_sse2);
   1202 	push @{$config{defines}}, "VPAES_ASM" if ($target{aes_asm_src} =~ m/vpaes/);
   1203 	push @{$config{defines}}, "BSAES_ASM" if ($target{aes_asm_src} =~ m/bsaes/);
   1204     }
   1205     if ($target{wp_asm_src} =~ /mmx/) {
   1206         if ($config{processor} eq "386") {
   1207 	    $target{wp_asm_src}=$table{DEFAULTS}->{wp_asm_src};
   1208 	} elsif (!$disabled{"whirlpool"}) {
   1209 	    push @{$config{defines}}, "WHIRLPOOL_ASM";
   1210 	}
   1211     }
   1212     if ($target{modes_asm_src} =~ /ghash-/) {
   1213 	push @{$config{defines}}, "GHASH_ASM";
   1214     }
   1215     if ($target{ec_asm_src} =~ /ecp_nistz256/) {
   1216 	push @{$config{defines}}, "ECP_NISTZ256_ASM";
   1217     }
   1218     if ($target{padlock_asm_src} ne $table{DEFAULTS}->{padlock_asm_src}) {
   1219 	push @{$config{defines}}, "PADLOCK_ASM";
   1220     }
   1221     if ($target{poly1305_asm_src} ne "") {
   1222 	push @{$config{defines}}, "POLY1305_ASM";
   1223     }
   1224 }
   1225 
   1226 my %predefined;
   1227 
   1228 if ($^O ne "VMS") {
   1229     my $cc = "$config{cross_compile_prefix}$target{cc}";
   1230 
   1231     # collect compiler pre-defines from gcc or gcc-alike...
   1232     open(PIPE, "$cc -dM -E -x c /dev/null 2>&1 |");
   1233     while (<PIPE>) {
   1234 	m/^#define\s+(\w+(?:\(\w+\))?)(?:\s+(.+))?/ or last;
   1235 	$predefined{$1} = $2 // "";
   1236     }
   1237     close(PIPE);
   1238 
   1239     if (!$disabled{makedepend}) {
   1240 	# We know that GNU C version 3 and up as well as all clang
   1241 	# versions support dependency generation
   1242 	if ($predefined{__GNUC__} >= 3) {
   1243 	    $config{makedepprog} = $cc;
   1244 	} else {
   1245 	    $config{makedepprog} = which('makedepend');
   1246 	    $disabled{makedepend} = "unavailable" unless $config{makedepprog};
   1247 	}
   1248     }
   1249 }
   1250 
   1251 
   1252 
   1253 # Deal with bn_ops ###################################################
   1254 
   1255 $config{bn_ll}			=0;
   1256 $config{export_var_as_fn}	=0;
   1257 my $def_int="unsigned int";
   1258 $config{rc4_int}		=$def_int;
   1259 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
   1260 
   1261 my $count = 0;
   1262 foreach (sort split(/\s+/,$target{bn_ops})) {
   1263     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
   1264     $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
   1265     $config{bn_ll}=1				if $_ eq 'BN_LLONG';
   1266     $config{rc4_int}="unsigned char"		if $_ eq 'RC4_CHAR';
   1267     ($config{b64l},$config{b64},$config{b32})
   1268 	=(0,1,0)				if $_ eq 'SIXTY_FOUR_BIT';
   1269     ($config{b64l},$config{b64},$config{b32})
   1270 	=(1,0,0)				if $_ eq 'SIXTY_FOUR_BIT_LONG';
   1271     ($config{b64l},$config{b64},$config{b32})
   1272 	=(0,0,1)				if $_ eq 'THIRTY_TWO_BIT';
   1273 }
   1274 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
   1275     if $count > 1;
   1276 
   1277 
   1278 # Hack cflags for better warnings (dev option) #######################
   1279 
   1280 # "Stringify" the C flags string.  This permits it to be made part of a string
   1281 # and works as well on command lines.
   1282 $config{cflags} =~ s/([\\\"])/\\$1/g;
   1283 
   1284 if (defined($config{api})) {
   1285     $config{openssl_api_defines} = [ "OPENSSL_MIN_API=".$apitable->{$config{api}} ];
   1286     my $apiflag = sprintf("OPENSSL_API_COMPAT=%s", $apitable->{$config{api}});
   1287     push @{$config{defines}}, $apiflag;
   1288 }
   1289 
   1290 if ($strict_warnings)
   1291 	{
   1292 	my $wopt;
   1293 	die "ERROR --strict-warnings requires gcc or gcc-alike"
   1294             unless defined($predefined{__GNUC__});
   1295 	foreach $wopt (split /\s+/, $gcc_devteam_warn)
   1296 		{
   1297 		$config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
   1298 		}
   1299 	if (defined($predefined{__clang__}))
   1300 		{
   1301 		foreach $wopt (split /\s+/, $clang_devteam_warn)
   1302 			{
   1303 			$config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
   1304 			}
   1305 		}
   1306 	}
   1307 
   1308 unless ($disabled{"crypto-mdebug-backtrace"})
   1309 	{
   1310 	foreach my $wopt (split /\s+/, $memleak_devteam_backtrace)
   1311 		{
   1312 		$config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
   1313 		}
   1314 	if ($target =~ /^BSD-/)
   1315 		{
   1316 		$config{ex_libs} .= " -lexecinfo";
   1317 		}
   1318 	}
   1319 
   1320 if ($user_cflags ne "") { $config{cflags}="$config{cflags}$user_cflags"; }
   1321 else                    { $no_user_cflags=1;  }
   1322 if (@user_defines) { $config{defines}=[ @{$config{defines}}, @user_defines ]; }
   1323 else               { $no_user_defines=1;    }
   1324 
   1325 # ALL MODIFICATIONS TO %config and %target MUST BE DONE FROM HERE ON
   1326 
   1327 unless ($disabled{afalgeng}) {
   1328     $config{afalgeng}="";
   1329     if ($target =~ m/^linux/) {
   1330         my $minver = 4*10000 + 1*100 + 0;
   1331         if ($config{cross_compile_prefix} eq "") {
   1332             my $verstr = `uname -r`;
   1333             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
   1334             ($mi2) = $mi2 =~ /(\d+)/;
   1335             my $ver = $ma*10000 + $mi1*100 + $mi2;
   1336             if ($ver < $minver) {
   1337                 $disabled{afalgeng} = "too-old-kernel";
   1338             } else {
   1339                 push @{$config{engdirs}}, "afalg";
   1340             }
   1341         } else {
   1342             $disabled{afalgeng} = "cross-compiling";
   1343         }
   1344     } else {
   1345         $disabled{afalgeng}  = "not-linux";
   1346     }
   1347 }
   1348 
   1349 push @{$config{openssl_other_defines}}, "OPENSSL_NO_AFALGENG" if ($disabled{afalgeng});
   1350 
   1351 # If we use the unified build, collect information from build.info files
   1352 my %unified_info = ();
   1353 
   1354 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
   1355 if ($builder eq "unified") {
   1356     use lib catdir(dirname(__FILE__),"util");
   1357     use with_fallback qw(Text::Template);
   1358 
   1359     sub cleandir {
   1360         my $base = shift;
   1361         my $dir = shift;
   1362         my $relativeto = shift || ".";
   1363 
   1364         $dir = catdir($base,$dir) unless isabsolute($dir);
   1365 
   1366         # Make sure the directories we're building in exists
   1367         mkpath($dir);
   1368 
   1369         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
   1370         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
   1371         return $res;
   1372     }
   1373 
   1374     sub cleanfile {
   1375         my $base = shift;
   1376         my $file = shift;
   1377         my $relativeto = shift || ".";
   1378 
   1379         $file = catfile($base,$file) unless isabsolute($file);
   1380 
   1381         my $d = dirname($file);
   1382         my $f = basename($file);
   1383 
   1384         # Make sure the directories we're building in exists
   1385         mkpath($d);
   1386 
   1387         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
   1388         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
   1389         return $res;
   1390     }
   1391 
   1392     # Store the name of the template file we will build the build file from
   1393     # in %config.  This may be useful for the build file itself.
   1394     my @build_file_template_names =
   1395 	( $builder_platform."-".$target{build_file}.".tmpl",
   1396 	  $target{build_file}.".tmpl" );
   1397     my @build_file_templates = ();
   1398 
   1399     # First, look in the user provided directory, if given
   1400     if (defined $ENV{$local_config_envname}) {
   1401 	@build_file_templates =
   1402 	    map {
   1403 		if ($^O eq 'VMS') {
   1404 		    # VMS environment variables are logical names,
   1405 		    # which can be used as is
   1406 		    $local_config_envname . ':' . $_;
   1407 		} else {
   1408 		    catfile($ENV{$local_config_envname}, $_);
   1409 		}
   1410 	    }
   1411 	    @build_file_template_names;
   1412     }
   1413     # Then, look in our standard directory
   1414     push @build_file_templates,
   1415 	( map { cleanfile($srcdir, catfile("Configurations", $_), $blddir) }
   1416 	  @build_file_template_names );
   1417 
   1418     my $build_file_template;
   1419     for $_ (@build_file_templates) {
   1420 	$build_file_template = $_;
   1421         last if -f $build_file_template;
   1422 
   1423         $build_file_template = undef;
   1424     }
   1425     if (!defined $build_file_template) {
   1426 	die "*** Couldn't find any of:\n", join("\n", @build_file_templates), "\n";
   1427     }
   1428     $config{build_file_templates}
   1429       = [ $build_file_template,
   1430           cleanfile($srcdir, catfile("Configurations", "common.tmpl"),
   1431                     $blddir) ];
   1432 
   1433     my @build_infos = ( [ ".", "build.info" ] );
   1434     foreach (@{$config{dirs}}) {
   1435         push @build_infos, [ $_, "build.info" ]
   1436             if (-f catfile($srcdir, $_, "build.info"));
   1437     }
   1438     foreach (@{$config{sdirs}}) {
   1439         push @build_infos, [ catdir("crypto", $_), "build.info" ]
   1440             if (-f catfile($srcdir, "crypto", $_, "build.info"));
   1441     }
   1442     foreach (@{$config{engdirs}}) {
   1443         push @build_infos, [ catdir("engines", $_), "build.info" ]
   1444             if (-f catfile($srcdir, "engines", $_, "build.info"));
   1445     }
   1446 
   1447     $config{build_infos} = [ ];
   1448 
   1449     foreach (@build_infos) {
   1450         my $sourced = catdir($srcdir, $_->[0]);
   1451         my $buildd = catdir($blddir, $_->[0]);
   1452 
   1453         mkpath($buildd);
   1454 
   1455         my $f = $_->[1];
   1456         # The basic things we're trying to build
   1457         my @programs = ();
   1458         my @programs_install = ();
   1459         my @libraries = ();
   1460         my @libraries_install = ();
   1461         my @engines = ();
   1462         my @engines_install = ();
   1463         my @scripts = ();
   1464         my @scripts_install = ();
   1465         my @extra = ();
   1466         my @overrides = ();
   1467         my @intermediates = ();
   1468         my @rawlines = ();
   1469 
   1470         my %ordinals = ();
   1471         my %sources = ();
   1472         my %shared_sources = ();
   1473         my %includes = ();
   1474         my %depends = ();
   1475         my %renames = ();
   1476         my %sharednames = ();
   1477         my %generate = ();
   1478 
   1479         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
   1480         my $template = Text::Template->new(TYPE => 'FILE',
   1481                                            SOURCE => catfile($sourced, $f));
   1482         die "Something went wrong with $sourced/$f: $!\n" unless $template;
   1483         my @text =
   1484             split /^/m,
   1485             $template->fill_in(HASH => { config => \%config,
   1486                                          target => \%target,
   1487                                          disabled => \%disabled,
   1488                                          withargs => \%withargs,
   1489                                          builddir => abs2rel($buildd, $blddir),
   1490                                          sourcedir => abs2rel($sourced, $blddir),
   1491                                          buildtop => abs2rel($blddir, $blddir),
   1492                                          sourcetop => abs2rel($srcdir, $blddir) },
   1493                                DELIMITERS => [ "{-", "-}" ]);
   1494 
   1495         # The top item of this stack has the following values
   1496         # -2 positive already run and we found ELSE (following ELSIF should fail)
   1497         # -1 positive already run (skip until ENDIF)
   1498         # 0 negatives so far (if we're at a condition, check it)
   1499         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
   1500         # 2 positive ELSE (following ELSIF should fail)
   1501         my @skip = ();
   1502         collect_information(
   1503             collect_from_array([ @text ],
   1504                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
   1505                                                 $l1 =~ s/\\$//; $l1.$l2 }),
   1506             # Info we're looking for
   1507             qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
   1508             => sub {
   1509                 if (! @skip || $skip[$#skip] > 0) {
   1510                     push @skip, !! $1;
   1511                 } else {
   1512                     push @skip, -1;
   1513                 }
   1514             },
   1515             qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
   1516             => sub { die "ELSIF out of scope" if ! @skip;
   1517                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
   1518                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
   1519                      $skip[$#skip] = !! $1
   1520                          if $skip[$#skip] == 0; },
   1521             qr/^\s*ELSE\s*$/
   1522             => sub { die "ELSE out of scope" if ! @skip;
   1523                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
   1524                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
   1525             qr/^\s*ENDIF\s*$/
   1526             => sub { die "ENDIF out of scope" if ! @skip;
   1527                      pop @skip; },
   1528             qr/^\s*PROGRAMS(_NO_INST)?\s*=\s*(.*)\s*$/
   1529             => sub {
   1530                 if (!@skip || $skip[$#skip] > 0) {
   1531                     my $install = $1;
   1532                     my @x = tokenize($2);
   1533                     push @programs, @x;
   1534                     push @programs_install, @x unless $install;
   1535                 }
   1536             },
   1537             qr/^\s*LIBS(_NO_INST)?\s*=\s*(.*)\s*$/
   1538             => sub {
   1539                 if (!@skip || $skip[$#skip] > 0) {
   1540                     my $install = $1;
   1541                     my @x = tokenize($2);
   1542                     push @libraries, @x;
   1543                     push @libraries_install, @x unless $install;
   1544                 }
   1545             },
   1546             qr/^\s*ENGINES(_NO_INST)?\s*=\s*(.*)\s*$/
   1547             => sub {
   1548                 if (!@skip || $skip[$#skip] > 0) {
   1549                     my $install = $1;
   1550                     my @x = tokenize($2);
   1551                     push @engines, @x;
   1552                     push @engines_install, @x unless $install;
   1553                 }
   1554             },
   1555             qr/^\s*SCRIPTS(_NO_INST)?\s*=\s*(.*)\s*$/
   1556             => sub {
   1557                 if (!@skip || $skip[$#skip] > 0) {
   1558                     my $install = $1;
   1559                     my @x = tokenize($2);
   1560                     push @scripts, @x;
   1561                     push @scripts_install, @x unless $install;
   1562                 }
   1563             },
   1564             qr/^\s*EXTRA\s*=\s*(.*)\s*$/
   1565             => sub { push @extra, tokenize($1)
   1566                          if !@skip || $skip[$#skip] > 0 },
   1567             qr/^\s*OVERRIDES\s*=\s*(.*)\s*$/
   1568             => sub { push @overrides, tokenize($1)
   1569                          if !@skip || $skip[$#skip] > 0 },
   1570 
   1571             qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
   1572             => sub { push @{$ordinals{$1}}, tokenize($2)
   1573                          if !@skip || $skip[$#skip] > 0 },
   1574             qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1575             => sub { push @{$sources{$1}}, tokenize($2)
   1576                          if !@skip || $skip[$#skip] > 0 },
   1577             qr/^\s*SHARED_SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1578             => sub { push @{$shared_sources{$1}}, tokenize($2)
   1579                          if !@skip || $skip[$#skip] > 0 },
   1580             qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1581             => sub { push @{$includes{$1}}, tokenize($2)
   1582                          if !@skip || $skip[$#skip] > 0 },
   1583             qr/^\s*DEPEND\[((?:\\.|[^\\\]])*)\]\s*=\s*(.*)\s*$/
   1584             => sub { push @{$depends{$1}}, tokenize($2)
   1585                          if !@skip || $skip[$#skip] > 0 },
   1586             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1587             => sub { push @{$generate{$1}}, $2
   1588                          if !@skip || $skip[$#skip] > 0 },
   1589             qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1590             => sub { push @{$renames{$1}}, tokenize($2)
   1591                          if !@skip || $skip[$#skip] > 0 },
   1592             qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1593             => sub { push @{$sharednames{$1}}, tokenize($2)
   1594                          if !@skip || $skip[$#skip] > 0 },
   1595             qr/^\s*BEGINRAW\[((?:\\.|[^\\\]])+)\]\s*$/
   1596             => sub {
   1597                 my $lineiterator = shift;
   1598                 my $target_kind = $1;
   1599                 while (defined $lineiterator->()) {
   1600                     s|\R$||;
   1601                     if (/^\s*ENDRAW\[((?:\\.|[^\\\]])+)\]\s*$/) {
   1602                         die "ENDRAW doesn't match BEGINRAW"
   1603                             if $1 ne $target_kind;
   1604                         last;
   1605                     }
   1606                     next if @skip && $skip[$#skip] <= 0;
   1607                     push @rawlines,  $_
   1608                         if ($target_kind eq $target{build_file}
   1609                             || $target_kind eq $target{build_file}."(".$builder_platform.")");
   1610                 }
   1611             },
   1612             qr/^(?:#.*|\s*)$/ => sub { },
   1613             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
   1614             "BEFORE" => sub {
   1615                 if ($buildinfo_debug) {
   1616                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
   1617                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
   1618                 }
   1619             },
   1620             "AFTER" => sub {
   1621                 if ($buildinfo_debug) {
   1622                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
   1623                 }
   1624             },
   1625             );
   1626         die "runaway IF?" if (@skip);
   1627 
   1628         foreach (keys %renames) {
   1629             die "$_ renamed to more than one thing: "
   1630                 ,join(" ", @{$renames{$_}}),"\n"
   1631                 if scalar @{$renames{$_}} > 1;
   1632             my $dest = cleanfile($buildd, $_, $blddir);
   1633             my $to = cleanfile($buildd, $renames{$_}->[0], $blddir);
   1634             die "$dest renamed to more than one thing: "
   1635                 ,$unified_info{rename}->{$dest}, $to
   1636                 unless !defined($unified_info{rename}->{$dest})
   1637                 or $unified_info{rename}->{$dest} eq $to;
   1638             $unified_info{rename}->{$dest} = $to;
   1639         }
   1640 
   1641         foreach (@programs) {
   1642             my $program = cleanfile($buildd, $_, $blddir);
   1643             if ($unified_info{rename}->{$program}) {
   1644                 $program = $unified_info{rename}->{$program};
   1645             }
   1646             $unified_info{programs}->{$program} = 1;
   1647         }
   1648 
   1649         foreach (@programs_install) {
   1650             my $program = cleanfile($buildd, $_, $blddir);
   1651             if ($unified_info{rename}->{$program}) {
   1652                 $program = $unified_info{rename}->{$program};
   1653             }
   1654             $unified_info{install}->{programs}->{$program} = 1;
   1655         }
   1656 
   1657         foreach (@libraries) {
   1658             my $library = cleanfile($buildd, $_, $blddir);
   1659             if ($unified_info{rename}->{$library}) {
   1660                 $library = $unified_info{rename}->{$library};
   1661             }
   1662             $unified_info{libraries}->{$library} = 1;
   1663         }
   1664 
   1665         foreach (@libraries_install) {
   1666             my $library = cleanfile($buildd, $_, $blddir);
   1667             if ($unified_info{rename}->{$library}) {
   1668                 $library = $unified_info{rename}->{$library};
   1669             }
   1670             $unified_info{install}->{libraries}->{$library} = 1;
   1671         }
   1672 
   1673         die <<"EOF" if scalar @engines and !$config{dynamic_engines};
   1674 ENGINES can only be used if configured with 'dynamic-engine'.
   1675 This is usually a fault in a build.info file.
   1676 EOF
   1677         foreach (@engines) {
   1678             my $library = cleanfile($buildd, $_, $blddir);
   1679             if ($unified_info{rename}->{$library}) {
   1680                 $library = $unified_info{rename}->{$library};
   1681             }
   1682             $unified_info{engines}->{$library} = 1;
   1683         }
   1684 
   1685         foreach (@engines_install) {
   1686             my $library = cleanfile($buildd, $_, $blddir);
   1687             if ($unified_info{rename}->{$library}) {
   1688                 $library = $unified_info{rename}->{$library};
   1689             }
   1690             $unified_info{install}->{engines}->{$library} = 1;
   1691         }
   1692 
   1693         foreach (@scripts) {
   1694             my $script = cleanfile($buildd, $_, $blddir);
   1695             if ($unified_info{rename}->{$script}) {
   1696                 $script = $unified_info{rename}->{$script};
   1697             }
   1698             $unified_info{scripts}->{$script} = 1;
   1699         }
   1700 
   1701         foreach (@scripts_install) {
   1702             my $script = cleanfile($buildd, $_, $blddir);
   1703             if ($unified_info{rename}->{$script}) {
   1704                 $script = $unified_info{rename}->{$script};
   1705             }
   1706             $unified_info{install}->{scripts}->{$script} = 1;
   1707         }
   1708 
   1709         foreach (@extra) {
   1710             my $extra = cleanfile($buildd, $_, $blddir);
   1711             $unified_info{extra}->{$extra} = 1;
   1712         }
   1713 
   1714         foreach (@overrides) {
   1715             my $override = cleanfile($buildd, $_, $blddir);
   1716             $unified_info{overrides}->{$override} = 1;
   1717         }
   1718 
   1719         push @{$unified_info{rawlines}}, @rawlines;
   1720 
   1721         unless ($disabled{shared}) {
   1722             # Check sharednames.
   1723             foreach (keys %sharednames) {
   1724                 my $dest = cleanfile($buildd, $_, $blddir);
   1725                 if ($unified_info{rename}->{$dest}) {
   1726                     $dest = $unified_info{rename}->{$dest};
   1727                 }
   1728                 die "shared_name for $dest with multiple values: "
   1729                     ,join(" ", @{$sharednames{$_}}),"\n"
   1730                     if scalar @{$sharednames{$_}} > 1;
   1731                 my $to = cleanfile($buildd, $sharednames{$_}->[0], $blddir);
   1732                 die "shared_name found for a library $dest that isn't defined\n"
   1733                     unless $unified_info{libraries}->{$dest};
   1734                 die "shared_name for $dest with multiple values: "
   1735                     ,$unified_info{sharednames}->{$dest}, ", ", $to
   1736                     unless !defined($unified_info{sharednames}->{$dest})
   1737                     or $unified_info{sharednames}->{$dest} eq $to;
   1738                 $unified_info{sharednames}->{$dest} = $to;
   1739             }
   1740 
   1741             # Additionally, we set up sharednames for libraries that don't
   1742             # have any, as themselves.
   1743             foreach (keys %{$unified_info{libraries}}) {
   1744                 if (!defined $unified_info{sharednames}->{$_}) {
   1745                     $unified_info{sharednames}->{$_} = $_
   1746                 }
   1747             }
   1748         }
   1749 
   1750         foreach (keys %ordinals) {
   1751             my $dest = $_;
   1752             my $ddest = cleanfile($buildd, $_, $blddir);
   1753             if ($unified_info{rename}->{$ddest}) {
   1754                 $ddest = $unified_info{rename}->{$ddest};
   1755             }
   1756             foreach (@{$ordinals{$dest}}) {
   1757                 my %known_ordinals =
   1758                     (
   1759                      crypto =>
   1760                      cleanfile($sourced, catfile("util", "libcrypto.num"), $blddir),
   1761                      ssl =>
   1762                      cleanfile($sourced, catfile("util", "libssl.num"), $blddir)
   1763                     );
   1764                 my $o = $known_ordinals{$_};
   1765                 die "Ordinals for $ddest defined more than once\n"
   1766                     if $unified_info{ordinals}->{$ddest};
   1767                 $unified_info{ordinals}->{$ddest} = [ $_, $o ];
   1768             }
   1769         }
   1770 
   1771         foreach (keys %sources) {
   1772             my $dest = $_;
   1773             my $ddest = cleanfile($buildd, $_, $blddir);
   1774             if ($unified_info{rename}->{$ddest}) {
   1775                 $ddest = $unified_info{rename}->{$ddest};
   1776             }
   1777             foreach (@{$sources{$dest}}) {
   1778                 my $s = cleanfile($sourced, $_, $blddir);
   1779 
   1780                 # If it isn't in the source tree, we assume it's generated
   1781                 # in the build tree
   1782                 if (! -f $s) {
   1783                     $s = cleanfile($buildd, $_, $blddir);
   1784                 }
   1785                 # We recognise C and asm files
   1786                 if ($s =~ /\.[csS]\b$/) {
   1787                     (my $o = $_) =~ s/\.[csS]\b$/.o/;
   1788                     $o = cleanfile($buildd, $o, $blddir);
   1789                     $unified_info{sources}->{$ddest}->{$o} = 1;
   1790                     $unified_info{sources}->{$o}->{$s} = 1;
   1791                 } else {
   1792                     $unified_info{sources}->{$ddest}->{$s} = 1;
   1793                 }
   1794             }
   1795         }
   1796 
   1797         foreach (keys %shared_sources) {
   1798             my $dest = $_;
   1799             my $ddest = cleanfile($buildd, $_, $blddir);
   1800             if ($unified_info{rename}->{$ddest}) {
   1801                 $ddest = $unified_info{rename}->{$ddest};
   1802             }
   1803             foreach (@{$shared_sources{$dest}}) {
   1804                 my $s = cleanfile($sourced, $_, $blddir);
   1805 
   1806                 # If it isn't in the source tree, we assume it's generated
   1807                 # in the build tree
   1808                 if (! -f $s) {
   1809                     $s = cleanfile($buildd, $_, $blddir);
   1810                 }
   1811                 # We recognise C and asm files
   1812                 if ($s =~ /\.[csS]\b$/) {
   1813                     (my $o = $_) =~ s/\.[csS]\b$/.o/;
   1814                     $o = cleanfile($buildd, $o, $blddir);
   1815                     $unified_info{shared_sources}->{$ddest}->{$o} = 1;
   1816                     $unified_info{sources}->{$o}->{$s} = 1;
   1817                 } else {
   1818                     die "unrecognised source file type for shared library: $s\n";
   1819                 }
   1820             }
   1821         }
   1822 
   1823         foreach (keys %generate) {
   1824             my $dest = $_;
   1825             my $ddest = cleanfile($buildd, $_, $blddir);
   1826             if ($unified_info{rename}->{$ddest}) {
   1827                 $ddest = $unified_info{rename}->{$ddest};
   1828             }
   1829             die "more than one generator for $dest: "
   1830                     ,join(" ", @{$generate{$_}}),"\n"
   1831                     if scalar @{$generate{$_}} > 1;
   1832             my @generator = split /\s+/, $generate{$dest}->[0];
   1833             $generator[0] = cleanfile($sourced, $generator[0], $blddir),
   1834             $unified_info{generate}->{$ddest} = [ @generator ];
   1835         }
   1836 
   1837         foreach (keys %depends) {
   1838             my $dest = $_;
   1839             my $ddest = $dest eq "" ? "" : cleanfile($sourced, $_, $blddir);
   1840 
   1841             # If the destination doesn't exist in source, it can only be
   1842             # a generated file in the build tree.
   1843             if ($ddest ne "" && ! -f $ddest) {
   1844                 $ddest = cleanfile($buildd, $_, $blddir);
   1845                 if ($unified_info{rename}->{$ddest}) {
   1846                     $ddest = $unified_info{rename}->{$ddest};
   1847                 }
   1848             }
   1849             foreach (@{$depends{$dest}}) {
   1850                 my $d = cleanfile($sourced, $_, $blddir);
   1851 
   1852                 # If we know it's generated, or assume it is because we can't
   1853                 # find it in the source tree, we set file we depend on to be
   1854                 # in the build tree rather than the source tree, and assume
   1855                 # and that there are lines to build it in a BEGINRAW..ENDRAW
   1856                 # section or in the Makefile template.
   1857                 if (! -f $d
   1858                     || (grep { $d eq $_ }
   1859                         map { cleanfile($srcdir, $_, $blddir) }
   1860                         grep { /\.h$/ } keys %{$unified_info{generate}})) {
   1861                     $d = cleanfile($buildd, $_, $blddir);
   1862                 }
   1863                 # Take note if the file to depend on is being renamed
   1864                 if ($unified_info{rename}->{$d}) {
   1865                     $d = $unified_info{rename}->{$d};
   1866                 }
   1867                 $unified_info{depends}->{$ddest}->{$d} = 1;
   1868                 # If we depend on a header file or a perl module, let's make
   1869                 # sure it can get included
   1870                 if ($dest ne "" && $d =~ /\.(h|pm)$/) {
   1871                     my $i = dirname($d);
   1872                     push @{$unified_info{includes}->{$ddest}->{source}}, $i
   1873                         unless grep { $_ eq $i } @{$unified_info{includes}->{$ddest}->{source}};
   1874                 }
   1875             }
   1876         }
   1877 
   1878         foreach (keys %includes) {
   1879             my $dest = $_;
   1880             my $ddest = cleanfile($sourced, $_, $blddir);
   1881 
   1882             # If the destination doesn't exist in source, it can only be
   1883             # a generated file in the build tree.
   1884             if (! -f $ddest) {
   1885                 $ddest = cleanfile($buildd, $_, $blddir);
   1886                 if ($unified_info{rename}->{$ddest}) {
   1887                     $ddest = $unified_info{rename}->{$ddest};
   1888                 }
   1889             }
   1890             foreach (@{$includes{$dest}}) {
   1891                 my $is = cleandir($sourced, $_, $blddir);
   1892                 my $ib = cleandir($buildd, $_, $blddir);
   1893                 push @{$unified_info{includes}->{$ddest}->{source}}, $is
   1894                     unless grep { $_ eq $is } @{$unified_info{includes}->{$ddest}->{source}};
   1895                 push @{$unified_info{includes}->{$ddest}->{build}}, $ib
   1896                     unless grep { $_ eq $ib } @{$unified_info{includes}->{$ddest}->{build}};
   1897             }
   1898         }
   1899     }
   1900 
   1901     ### Make unified_info a bit more efficient
   1902     # One level structures
   1903     foreach (("programs", "libraries", "engines", "scripts", "extra", "overrides")) {
   1904         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
   1905     }
   1906     # Two level structures
   1907     foreach my $l1 (("install", "sources", "shared_sources", "ldadd", "depends")) {
   1908         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
   1909             $unified_info{$l1}->{$l2} =
   1910                 [ sort keys %{$unified_info{$l1}->{$l2}} ];
   1911         }
   1912     }
   1913     # Includes
   1914     foreach my $dest (sort keys %{$unified_info{includes}}) {
   1915         if (defined($unified_info{includes}->{$dest}->{build})) {
   1916             my @source_includes =
   1917                 ( @{$unified_info{includes}->{$dest}->{source}} );
   1918             $unified_info{includes}->{$dest} =
   1919                 [ @{$unified_info{includes}->{$dest}->{build}} ];
   1920             foreach my $inc (@source_includes) {
   1921                 push @{$unified_info{includes}->{$dest}}, $inc
   1922                     unless grep { $_ eq $inc } @{$unified_info{includes}->{$dest}};
   1923             }
   1924         } else {
   1925             $unified_info{includes}->{$dest} =
   1926                 [ @{$unified_info{includes}->{$dest}->{source}} ];
   1927         }
   1928     }
   1929 }
   1930 
   1931 # For the schemes that need it, we provide the old *_obj configs
   1932 # from the *_asm_obj ones
   1933 foreach (grep /_(asm|aux)_src$/, keys %target) {
   1934     my $src = $_;
   1935     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
   1936     ($target{$obj} = $target{$src}) =~ s/\.[csS]\b/.o/g;
   1937 }
   1938 
   1939 # Write down our configuration where it fits #########################
   1940 
   1941 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
   1942 print OUT <<"EOF";
   1943 package configdata;
   1944 
   1945 use strict;
   1946 use warnings;
   1947 
   1948 use Exporter;
   1949 #use vars qw(\@ISA \@EXPORT);
   1950 our \@ISA = qw(Exporter);
   1951 our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables);
   1952 
   1953 EOF
   1954 print OUT "our %config = (\n";
   1955 foreach (sort keys %config) {
   1956     if (ref($config{$_}) eq "ARRAY") {
   1957 	print OUT "  ", $_, " => [ ", join(", ",
   1958 					   map { quotify("perl", $_) }
   1959 					   @{$config{$_}}), " ],\n";
   1960     } else {
   1961 	print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
   1962     }
   1963 }
   1964 print OUT <<"EOF";
   1965 );
   1966 
   1967 EOF
   1968 print OUT "our %target = (\n";
   1969 foreach (sort keys %target) {
   1970     if (ref($target{$_}) eq "ARRAY") {
   1971 	print OUT "  ", $_, " => [ ", join(", ",
   1972 					   map { quotify("perl", $_) }
   1973 					   @{$target{$_}}), " ],\n";
   1974     } else {
   1975 	print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
   1976     }
   1977 }
   1978 print OUT <<"EOF";
   1979 );
   1980 
   1981 EOF
   1982 print OUT "our \%available_protocols = (\n";
   1983 print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
   1984 print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
   1985 print OUT <<"EOF";
   1986 );
   1987 
   1988 EOF
   1989 print OUT "our \@disablables = (\n";
   1990 foreach (@disablables) {
   1991     print OUT "  ", quotify("perl", $_), ",\n";
   1992 }
   1993 print OUT <<"EOF";
   1994 );
   1995 
   1996 EOF
   1997 print OUT "our \%disabled = (\n";
   1998 foreach (sort keys %disabled) {
   1999     print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
   2000 }
   2001 print OUT <<"EOF";
   2002 );
   2003 
   2004 EOF
   2005 print OUT "our %withargs = (\n";
   2006 foreach (sort keys %withargs) {
   2007     if (ref($withargs{$_}) eq "ARRAY") {
   2008 	print OUT "  ", $_, " => [ ", join(", ",
   2009 					   map { quotify("perl", $_) }
   2010 					   @{$withargs{$_}}), " ],\n";
   2011     } else {
   2012 	print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
   2013     }
   2014 }
   2015 print OUT <<"EOF";
   2016 );
   2017 
   2018 EOF
   2019 if ($builder eq "unified") {
   2020     my $recurse;
   2021     $recurse = sub {
   2022         my $indent = shift;
   2023         foreach (@_) {
   2024             if (ref $_ eq "ARRAY") {
   2025                 print OUT " "x$indent, "[\n";
   2026                 foreach (@$_) {
   2027                     $recurse->($indent + 4, $_);
   2028                 }
   2029                 print OUT " "x$indent, "],\n";
   2030             } elsif (ref $_ eq "HASH") {
   2031                 my %h = %$_;
   2032                 print OUT " "x$indent, "{\n";
   2033                 foreach (sort keys %h) {
   2034                     if (ref $h{$_} eq "") {
   2035                         print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
   2036                     } else {
   2037                         print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
   2038                         $recurse->($indent + 8, $h{$_});
   2039                     }
   2040                 }
   2041                 print OUT " "x$indent, "},\n";
   2042             } else {
   2043                 print OUT " "x$indent, quotify("perl", $_), ",\n";
   2044             }
   2045         }
   2046     };
   2047     print OUT "our %unified_info = (\n";
   2048     foreach (sort keys %unified_info) {
   2049         if (ref $unified_info{$_} eq "") {
   2050             print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
   2051         } else {
   2052             print OUT " "x4, quotify("perl", $_), " =>\n";
   2053             $recurse->(8, $unified_info{$_});
   2054         }
   2055     }
   2056     print OUT <<"EOF";
   2057 );
   2058 
   2059 EOF
   2060 }
   2061 print OUT "1;\n";
   2062 close(OUT);
   2063 
   2064 
   2065 print "CC            =$config{cross_compile_prefix}$target{cc}\n";
   2066 print "CFLAG         =$target{cflags} $config{cflags}\n";
   2067 print "SHARED_CFLAG  =$target{shared_cflag}\n";
   2068 print "DEFINES       =",join(" ", @{$target{defines}}, @{$config{defines}}),"\n";
   2069 print "LFLAG         =$target{lflags}\n";
   2070 print "PLIB_LFLAG    =$target{plib_lflags}\n";
   2071 print "EX_LIBS       =$target{ex_libs} $config{ex_libs}\n";
   2072 print "APPS_OBJ      =$target{apps_obj}\n";
   2073 print "CPUID_OBJ     =$target{cpuid_obj}\n";
   2074 print "UPLINK_OBJ    =$target{uplink_obj}\n";
   2075 print "BN_ASM        =$target{bn_obj}\n";
   2076 print "EC_ASM        =$target{ec_obj}\n";
   2077 print "DES_ENC       =$target{des_obj}\n";
   2078 print "AES_ENC       =$target{aes_obj}\n";
   2079 print "BF_ENC        =$target{bf_obj}\n";
   2080 print "CAST_ENC      =$target{cast_obj}\n";
   2081 print "RC4_ENC       =$target{rc4_obj}\n";
   2082 print "RC5_ENC       =$target{rc5_obj}\n";
   2083 print "MD5_OBJ_ASM   =$target{md5_obj}\n";
   2084 print "SHA1_OBJ_ASM  =$target{sha1_obj}\n";
   2085 print "RMD160_OBJ_ASM=$target{rmd160_obj}\n";
   2086 print "CMLL_ENC      =$target{cmll_obj}\n";
   2087 print "MODES_OBJ     =$target{modes_obj}\n";
   2088 print "PADLOCK_OBJ   =$target{padlock_obj}\n";
   2089 print "CHACHA_ENC    =$target{chacha_obj}\n";
   2090 print "POLY1305_OBJ  =$target{poly1305_obj}\n";
   2091 print "BLAKE2_OBJ    =$target{blake2_obj}\n";
   2092 print "PROCESSOR     =$config{processor}\n";
   2093 print "RANLIB        =", $target{ranlib} eq '$(CROSS_COMPILE)ranlib' ?
   2094                              "$config{cross_compile_prefix}ranlib" :
   2095                              "$target{ranlib}", "\n";
   2096 print "ARFLAGS       =$target{arflags}\n";
   2097 print "PERL          =$config{perl}\n";
   2098 print "\n";
   2099 print "SIXTY_FOUR_BIT_LONG mode\n" if $config{b64l};
   2100 print "SIXTY_FOUR_BIT mode\n" if $config{b64};
   2101 print "THIRTY_TWO_BIT mode\n" if $config{b32};
   2102 print "BN_LLONG mode\n" if $config{bn_ll};
   2103 print "RC4 uses $config{rc4_int}\n" if $config{rc4_int} ne $def_int;
   2104 
   2105 my %builders = (
   2106     unified => sub {
   2107         run_dofile(catfile($blddir, $target{build_file}),
   2108                    @{$config{build_file_templates}});
   2109     },
   2110     );
   2111 
   2112 $builders{$builder}->($builder_platform, @builder_opts);
   2113 
   2114 print <<"EOF";
   2115 
   2116 Configured for $target.
   2117 EOF
   2118 
   2119 print <<"EOF" if ($disabled{threads} eq "unavailable");
   2120 
   2121 The library could not be configured for supporting multi-threaded
   2122 applications as the compiler options required on this system are not known.
   2123 See file INSTALL for details if you need multi-threading.
   2124 EOF
   2125 
   2126 print <<"EOF" if ($no_shared_warn);
   2127 
   2128 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
   2129 platform, so we will pretend you gave the option 'no-pic', which also disables
   2130 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
   2131 or position independent code, please let us know (but please first make sure
   2132 you have tried with a current version of OpenSSL).
   2133 EOF
   2134 
   2135 print <<"EOF" if (-f catfile($srcdir, "configdata.pm") && $srcdir ne $blddir);
   2136 
   2137 WARNING: there are indications that another build was made in the source
   2138 directory.  This build may have picked up artifacts from that build, the
   2139 safest course of action is to clean the source directory and redo this
   2140 configuration.
   2141 EOF
   2142 
   2143 exit(0);
   2144 
   2145 ######################################################################
   2146 #
   2147 # Helpers and utility functions
   2148 #
   2149 
   2150 # Configuration file reading #########################################
   2151 
   2152 # Note: All of the helper functions are for lazy evaluation.  They all
   2153 # return a CODE ref, which will return the intended value when evaluated.
   2154 # Thus, whenever there's mention of a returned value, it's about that
   2155 # intended value.
   2156 
   2157 # Helper function to implement conditional inheritance depending on the
   2158 # value of $disabled{asm}.  Used in inherit_from values as follows:
   2159 #
   2160 #      inherit_from => [ "template", asm("asm_tmpl") ]
   2161 #
   2162 sub asm {
   2163     my @x = @_;
   2164     sub {
   2165 	$disabled{asm} ? () : @x;
   2166     }
   2167 }
   2168 
   2169 # Helper function to implement conditional value variants, with a default
   2170 # plus additional values based on the value of $config{build_type}.
   2171 # Arguments are given in hash table form:
   2172 #
   2173 #       picker(default => "Basic string: ",
   2174 #              debug   => "debug",
   2175 #              release => "release")
   2176 #
   2177 # When configuring with --debug, the resulting string will be
   2178 # "Basic string: debug", and when not, it will be "Basic string: release"
   2179 #
   2180 # This can be used to create variants of sets of flags according to the
   2181 # build type:
   2182 #
   2183 #       cflags => picker(default => "-Wall",
   2184 #                        debug   => "-g -O0",
   2185 #                        release => "-O3")
   2186 #
   2187 sub picker {
   2188     my %opts = @_;
   2189     return sub { add($opts{default} || (),
   2190                      $opts{$config{build_type}} || ())->(); }
   2191 }
   2192 
   2193 # Helper function to combine several values of different types into one.
   2194 # This is useful if you want to combine a string with the result of a
   2195 # lazy function, such as:
   2196 #
   2197 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
   2198 #
   2199 sub combine {
   2200     my @stuff = @_;
   2201     return sub { add(@stuff)->(); }
   2202 }
   2203 
   2204 # Helper function to implement conditional values depending on the value
   2205 # of $disabled{threads}.  Can be used as follows:
   2206 #
   2207 #       cflags => combine("-Wall", threads("-pthread"))
   2208 #
   2209 sub threads {
   2210     my @flags = @_;
   2211     return sub { add($disabled{threads} ? () : @flags)->(); }
   2212 }
   2213 
   2214 
   2215 
   2216 our $add_called = 0;
   2217 # Helper function to implement adding values to already existing configuration
   2218 # values.  It handles elements that are ARRAYs, CODEs and scalars
   2219 sub _add {
   2220     my $separator = shift;
   2221 
   2222     # If there's any ARRAY in the collection of values OR the separator
   2223     # is undef, we will return an ARRAY of combined values, otherwise a
   2224     # string of joined values with $separator as the separator.
   2225     my $found_array = !defined($separator);
   2226 
   2227     my @values =
   2228 	map {
   2229 	    my $res = $_;
   2230 	    while (ref($res) eq "CODE") {
   2231 		$res = $res->();
   2232 	    }
   2233 	    if (defined($res)) {
   2234 		if (ref($res) eq "ARRAY") {
   2235 		    $found_array = 1;
   2236 		    @$res;
   2237 		} else {
   2238 		    $res;
   2239 		}
   2240 	    } else {
   2241 		();
   2242 	    }
   2243     } (@_);
   2244 
   2245     $add_called = 1;
   2246 
   2247     if ($found_array) {
   2248 	[ @values ];
   2249     } else {
   2250 	join($separator, grep { defined($_) && $_ ne "" } @values);
   2251     }
   2252 }
   2253 sub add_before {
   2254     my $separator = " ";
   2255     if (ref($_[$#_]) eq "HASH") {
   2256         my $opts = pop;
   2257         $separator = $opts->{separator};
   2258     }
   2259     my @x = @_;
   2260     sub { _add($separator, @x, @_) };
   2261 }
   2262 sub add {
   2263     my $separator = " ";
   2264     if (ref($_[$#_]) eq "HASH") {
   2265         my $opts = pop;
   2266         $separator = $opts->{separator};
   2267     }
   2268     my @x = @_;
   2269     sub { _add($separator, @_, @x) };
   2270 }
   2271 
   2272 # configuration reader, evaluates the input file as a perl script and expects
   2273 # it to fill %targets with target configurations.  Those are then added to
   2274 # %table.
   2275 sub read_config {
   2276     my $fname = shift;
   2277     open(CONFFILE, "< $fname")
   2278 	or die "Can't open configuration file '$fname'!\n";
   2279     my $x = $/;
   2280     undef $/;
   2281     my $content = <CONFFILE>;
   2282     $/ = $x;
   2283     close(CONFFILE);
   2284     my %targets = ();
   2285     {
   2286 	# Protect certain tables from tampering
   2287 	local %table = %::table;
   2288 
   2289 	eval $content;
   2290 	warn $@ if $@;
   2291     }
   2292 
   2293     # For each target, check that it's configured with a hash table.
   2294     foreach (keys %targets) {
   2295 	if (ref($targets{$_}) ne "HASH") {
   2296 	    if (ref($targets{$_}) eq "") {
   2297 		warn "Deprecated target configuration for $_, ignoring...\n";
   2298 	    } else {
   2299 		warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
   2300 	    }
   2301 	    delete $targets{$_};
   2302 	} else {
   2303             $targets{$_}->{_conf_fname_int} = add([ $fname ]);
   2304         }
   2305     }
   2306 
   2307     %table = (%table, %targets);
   2308 
   2309 }
   2310 
   2311 # configuration resolver.  Will only resolve all the lazy evaluation
   2312 # codeblocks for the chosen target and all those it inherits from,
   2313 # recursively
   2314 sub resolve_config {
   2315     my $target = shift;
   2316     my @breadcrumbs = @_;
   2317 
   2318 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
   2319 
   2320     if (grep { $_ eq $target } @breadcrumbs) {
   2321 	die "inherit_from loop!  target backtrace:\n  "
   2322 	    ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
   2323     }
   2324 
   2325     if (!defined($table{$target})) {
   2326 	warn "Warning! target $target doesn't exist!\n";
   2327 	return ();
   2328     }
   2329     # Recurse through all inheritances.  They will be resolved on the
   2330     # fly, so when this operation is done, they will all just be a
   2331     # bunch of attributes with string values.
   2332     # What we get here, though, are keys with references to lists of
   2333     # the combined values of them all.  We will deal with lists after
   2334     # this stage is done.
   2335     my %combined_inheritance = ();
   2336     if ($table{$target}->{inherit_from}) {
   2337 	my @inherit_from =
   2338 	    map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
   2339 	foreach (@inherit_from) {
   2340 	    my %inherited_config = resolve_config($_, $target, @breadcrumbs);
   2341 
   2342 	    # 'template' is a marker that's considered private to
   2343 	    # the config that had it.
   2344 	    delete $inherited_config{template};
   2345 
   2346 	    foreach (keys %inherited_config) {
   2347 		if (!$combined_inheritance{$_}) {
   2348 		    $combined_inheritance{$_} = [];
   2349 		}
   2350 		push @{$combined_inheritance{$_}}, $inherited_config{$_};
   2351 	    }
   2352 	}
   2353     }
   2354 
   2355     # We won't need inherit_from in this target any more, since we've
   2356     # resolved all the inheritances that lead to this
   2357     delete $table{$target}->{inherit_from};
   2358 
   2359     # Now is the time to deal with those lists.  Here's the place to
   2360     # decide what shall be done with those lists, all based on the
   2361     # values of the target we're currently dealing with.
   2362     # - If a value is a coderef, it will be executed with the list of
   2363     #   inherited values as arguments.
   2364     # - If the corresponding key doesn't have a value at all or is the
   2365     #   empty string, the inherited value list will be run through the
   2366     #   default combiner (below), and the result becomes this target's
   2367     #   value.
   2368     # - Otherwise, this target's value is assumed to be a string that
   2369     #   will simply override the inherited list of values.
   2370     my $default_combiner = add();
   2371 
   2372     my %all_keys =
   2373 	map { $_ => 1 } (keys %combined_inheritance,
   2374 			 keys %{$table{$target}});
   2375 
   2376     sub process_values {
   2377 	my $object    = shift;
   2378 	my $inherited = shift;  # Always a [ list ]
   2379 	my $target    = shift;
   2380 	my $entry     = shift;
   2381 
   2382         $add_called = 0;
   2383 
   2384         while(ref($object) eq "CODE") {
   2385             $object = $object->(@$inherited);
   2386         }
   2387         if (!defined($object)) {
   2388             return ();
   2389         }
   2390         elsif (ref($object) eq "ARRAY") {
   2391             local $add_called;  # To make sure recursive calls don't affect it
   2392             return [ map { process_values($_, $inherited, $target, $entry) }
   2393                      @$object ];
   2394         } elsif (ref($object) eq "") {
   2395             return $object;
   2396         } else {
   2397             die "cannot handle reference type ",ref($object)
   2398                 ," found in target ",$target," -> ",$entry,"\n";
   2399         }
   2400     }
   2401 
   2402     foreach (sort keys %all_keys) {
   2403         my $previous = $combined_inheritance{$_};
   2404 
   2405 	# Current target doesn't have a value for the current key?
   2406 	# Assign it the default combiner, the rest of this loop body
   2407 	# will handle it just like any other coderef.
   2408 	if (!exists $table{$target}->{$_}) {
   2409 	    $table{$target}->{$_} = $default_combiner;
   2410 	}
   2411 
   2412 	$table{$target}->{$_} = process_values($table{$target}->{$_},
   2413 					       $combined_inheritance{$_},
   2414 					       $target, $_);
   2415         unless(defined($table{$target}->{$_})) {
   2416             delete $table{$target}->{$_};
   2417         }
   2418 #        if ($extra_checks &&
   2419 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
   2420 #            warn "$_ got replaced in $target\n";
   2421 #        }
   2422     }
   2423 
   2424     # Finally done, return the result.
   2425     return %{$table{$target}};
   2426 }
   2427 
   2428 sub usage
   2429 	{
   2430 	print STDERR $usage;
   2431 	print STDERR "\npick os/compiler from:\n";
   2432 	my $j=0;
   2433 	my $i;
   2434         my $k=0;
   2435 	foreach $i (sort keys %table)
   2436 		{
   2437 		next if $table{$i}->{template};
   2438 		next if $i =~ /^debug/;
   2439 		$k += length($i) + 1;
   2440 		if ($k > 78)
   2441 			{
   2442 			print STDERR "\n";
   2443 			$k=length($i);
   2444 			}
   2445 		print STDERR $i . " ";
   2446 		}
   2447 	foreach $i (sort keys %table)
   2448 		{
   2449 		next if $table{$i}->{template};
   2450 		next if $i !~ /^debug/;
   2451 		$k += length($i) + 1;
   2452 		if ($k > 78)
   2453 			{
   2454 			print STDERR "\n";
   2455 			$k=length($i);
   2456 			}
   2457 		print STDERR $i . " ";
   2458 		}
   2459 	print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
   2460 	exit(1);
   2461 	}
   2462 
   2463 sub run_dofile
   2464 {
   2465     my $out = shift;
   2466     my @templates = @_;
   2467 
   2468     unlink $out || warn "Can't remove $out, $!"
   2469         if -f $out;
   2470     foreach (@templates) {
   2471         die "Can't open $_, $!" unless -f $_;
   2472     }
   2473     my $perlcmd = (quotify("maybeshell", $config{perl}))[0];
   2474     my $cmd = "$perlcmd \"-I.\" \"-Mconfigdata\" \"$dofile\" -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
   2475     #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
   2476     system($cmd);
   2477     exit 1 if $? != 0;
   2478     rename("$out.new", $out) || die "Can't rename $out.new, $!";
   2479 }
   2480 
   2481 sub which
   2482 {
   2483     my ($name)=@_;
   2484 
   2485     if (eval { require IPC::Cmd; 1; }) {
   2486         IPC::Cmd->import();
   2487         return scalar IPC::Cmd::can_run($name);
   2488     } else {
   2489         # if there is $directories component in splitpath,
   2490         # then it's not something to test with $PATH...
   2491         return $name if (File::Spec->splitpath($name))[1];
   2492 
   2493         foreach (File::Spec->path()) {
   2494             my $fullpath = catfile($_, "$name$target{exe_extension}");
   2495             if (-f $fullpath and -x $fullpath) {
   2496                 return $fullpath;
   2497             }
   2498         }
   2499     }
   2500 }
   2501 
   2502 # Configuration printer ##############################################
   2503 
   2504 sub print_table_entry
   2505 {
   2506     my $target = shift;
   2507     my %target = resolve_config($target);
   2508     my $type = shift;
   2509 
   2510     # Don't print the templates
   2511     return if $target{template};
   2512 
   2513     my @sequence = (
   2514 	"sys_id",
   2515 	"cc",
   2516 	"cflags",
   2517 	"defines",
   2518 	"unistd",
   2519 	"ld",
   2520 	"lflags",
   2521 	"loutflag",
   2522 	"plib_lflags",
   2523 	"ex_libs",
   2524 	"bn_ops",
   2525 	"apps_aux_src",
   2526 	"cpuid_asm_src",
   2527 	"uplink_aux_src",
   2528 	"bn_asm_src",
   2529 	"ec_asm_src",
   2530 	"des_asm_src",
   2531 	"aes_asm_src",
   2532 	"bf_asm_src",
   2533 	"md5_asm_src",
   2534 	"cast_asm_src",
   2535 	"sha1_asm_src",
   2536 	"rc4_asm_src",
   2537 	"rmd160_asm_src",
   2538 	"rc5_asm_src",
   2539 	"wp_asm_src",
   2540 	"cmll_asm_src",
   2541 	"modes_asm_src",
   2542 	"padlock_asm_src",
   2543 	"chacha_asm_src",
   2544 	"poly1035_asm_src",
   2545 	"thread_scheme",
   2546 	"perlasm_scheme",
   2547 	"dso_scheme",
   2548 	"shared_target",
   2549 	"shared_cflag",
   2550 	"shared_defines",
   2551 	"shared_ldflag",
   2552 	"shared_rcflag",
   2553 	"shared_extension",
   2554 	"dso_extension",
   2555 	"obj_extension",
   2556 	"exe_extension",
   2557 	"ranlib",
   2558 	"ar",
   2559 	"arflags",
   2560 	"aroutflag",
   2561 	"rc",
   2562 	"rcflags",
   2563 	"rcoutflag",
   2564 	"mt",
   2565 	"mtflags",
   2566 	"mtinflag",
   2567 	"mtoutflag",
   2568 	"multilib",
   2569 	"build_scheme",
   2570 	);
   2571 
   2572     if ($type eq "TABLE") {
   2573 	print "\n";
   2574 	print "*** $target\n";
   2575         foreach (@sequence) {
   2576             if (ref($target{$_}) eq "ARRAY") {
   2577                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
   2578             } else {
   2579                 printf "\$%-12s = %s\n", $_, $target{$_};
   2580             }
   2581         }
   2582     } elsif ($type eq "HASH") {
   2583 	my $largest =
   2584 	    length((sort { length($a) <=> length($b) } @sequence)[-1]);
   2585 	print "    '$target' => {\n";
   2586 	foreach (@sequence) {
   2587 	    if ($target{$_}) {
   2588                 if (ref($target{$_}) eq "ARRAY") {
   2589                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
   2590                 } else {
   2591                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
   2592                 }
   2593 	    }
   2594 	}
   2595 	print "    },\n";
   2596     }
   2597 }
   2598 
   2599 # Utility routines ###################################################
   2600 
   2601 # On VMS, if the given file is a logical name, File::Spec::Functions
   2602 # will consider it an absolute path.  There are cases when we want a
   2603 # purely syntactic check without checking the environment.
   2604 sub isabsolute {
   2605     my $file = shift;
   2606 
   2607     # On non-platforms, we just use file_name_is_absolute().
   2608     return file_name_is_absolute($file) unless $^O eq "VMS";
   2609 
   2610     # If the file spec includes a device or a directory spec,
   2611     # file_name_is_absolute() is perfectly safe.
   2612     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
   2613 
   2614     # Here, we know the given file spec isn't absolute
   2615     return 0;
   2616 }
   2617 
   2618 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
   2619 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
   2620 # realpath() requires that at least all path components except the last is an
   2621 # existing directory.  On VMS, the last component of the directory spec must
   2622 # exist.
   2623 sub absolutedir {
   2624     my $dir = shift;
   2625 
   2626     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
   2627     # will return the volume name for the device, no matter what.  Also,
   2628     # it will return an incorrect directory spec if the argument is a
   2629     # directory that doesn't exist.
   2630     if ($^O eq "VMS") {
   2631         return rel2abs($dir);
   2632     }
   2633 
   2634     # We use realpath() on Unix, since no other will properly clean out
   2635     # a directory spec.
   2636     use Cwd qw/realpath/;
   2637 
   2638     return realpath($dir);
   2639 }
   2640 
   2641 sub quotify {
   2642     my %processors = (
   2643 	perl    => sub { my $x = shift;
   2644 			 $x =~ s/([\\\$\@"])/\\$1/g;
   2645 			 return '"'.$x.'"'; },
   2646 	maybeshell => sub { my $x = shift;
   2647 			    (my $y = $x) =~ s/([\\\"])/\\$1/g;
   2648 			    if ($x ne $y || $x =~ m|\s|) {
   2649 				return '"'.$y.'"';
   2650 			    } else {
   2651 				return $x;
   2652 			    }
   2653 			},
   2654 	);
   2655     my $for = shift;
   2656     my $processor =
   2657 	defined($processors{$for}) ? $processors{$for} : sub { shift; };
   2658 
   2659     return map { $processor->($_); } @_;
   2660 }
   2661 
   2662 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
   2663 # $filename is a file name to read from
   2664 # $line_concat_cond_re is a regexp detecting a line continuation ending
   2665 # $line_concat is a CODEref that takes care of concatenating two lines
   2666 sub collect_from_file {
   2667     my $filename = shift;
   2668     my $line_concat_cond_re = shift;
   2669     my $line_concat = shift;
   2670 
   2671     open my $fh, $filename || die "unable to read $filename: $!\n";
   2672     return sub {
   2673         my $saved_line = "";
   2674         $_ = "";
   2675         while (<$fh>) {
   2676             s|\R$||;
   2677             if (defined $line_concat) {
   2678                 $_ = $line_concat->($saved_line, $_);
   2679                 $saved_line = "";
   2680             }
   2681             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
   2682                 $saved_line = $_;
   2683                 next;
   2684             }
   2685             return $_;
   2686         }
   2687         die "$filename ending with continuation line\n" if $_;
   2688         close $fh;
   2689         return undef;
   2690     }
   2691 }
   2692 
   2693 # collect_from_array($array, $line_concat_cond_re, $line_concat)
   2694 # $array is an ARRAYref of lines
   2695 # $line_concat_cond_re is a regexp detecting a line continuation ending
   2696 # $line_concat is a CODEref that takes care of concatenating two lines
   2697 sub collect_from_array {
   2698     my $array = shift;
   2699     my $line_concat_cond_re = shift;
   2700     my $line_concat = shift;
   2701     my @array = (@$array);
   2702 
   2703     return sub {
   2704         my $saved_line = "";
   2705         $_ = "";
   2706         while (defined($_ = shift @array)) {
   2707             s|\R$||;
   2708             if (defined $line_concat) {
   2709                 $_ = $line_concat->($saved_line, $_);
   2710                 $saved_line = "";
   2711             }
   2712             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
   2713                 $saved_line = $_;
   2714                 next;
   2715             }
   2716             return $_;
   2717         }
   2718         die "input text ending with continuation line\n" if $_;
   2719         return undef;
   2720     }
   2721 }
   2722 
   2723 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
   2724 # $lineiterator is a CODEref that delivers one line at a time.
   2725 # All following arguments are regex/CODEref pairs, where the regexp detects a
   2726 # line and the CODEref does something with the result of the regexp.
   2727 sub collect_information {
   2728     my $lineiterator = shift;
   2729     my %collectors = @_;
   2730 
   2731     while(defined($_ = $lineiterator->())) {
   2732         s|\R$||;
   2733         my $found = 0;
   2734         if ($collectors{"BEFORE"}) {
   2735             $collectors{"BEFORE"}->($_);
   2736         }
   2737         foreach my $re (keys %collectors) {
   2738             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
   2739                 $collectors{$re}->($lineiterator);
   2740                 $found = 1;
   2741             };
   2742         }
   2743         if ($collectors{"OTHERWISE"}) {
   2744             $collectors{"OTHERWISE"}->($lineiterator, $_)
   2745                 unless $found || !defined $collectors{"OTHERWISE"};
   2746         }
   2747         if ($collectors{"AFTER"}) {
   2748             $collectors{"AFTER"}->($_);
   2749         }
   2750     }
   2751 }
   2752 
   2753 # tokenize($line)
   2754 # $line is a line of text to split up into tokens
   2755 # returns a list of tokens
   2756 #
   2757 # Tokens are divided by spaces.  If the tokens include spaces, they
   2758 # have to be quoted with single or double quotes.  Double quotes
   2759 # inside a double quoted token must be escaped.  Escaping is done
   2760 # with backslash.
   2761 # Basically, the same quoting rules apply for " and ' as in any
   2762 # Unix shell.
   2763 sub tokenize {
   2764     my $line = my $debug_line = shift;
   2765     my @result = ();
   2766 
   2767     while ($line =~ s|^\s+||, $line ne "") {
   2768         my $token = "";
   2769         while ($line ne "" && $line !~ m|^\s|) {
   2770             if ($line =~ m/^"((?:[^"\\]+|\\.)*)"/) {
   2771                 $token .= $1;
   2772                 $line = $';
   2773             } elsif ($line =~ m/^'([^']*)'/) {
   2774                 $token .= $1;
   2775                 $line = $';
   2776             } elsif ($line =~ m/^(\S+)/) {
   2777                 $token .= $1;
   2778                 $line = $';
   2779             }
   2780         }
   2781         push @result, $token;
   2782     }
   2783 
   2784     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
   2785 	print STDERR "DEBUG[tokenize]: Parsed '$debug_line' into:\n";
   2786 	print STDERR "DEBUG[tokenize]: ('", join("', '", @result), "')\n";
   2787     }
   2788     return @result;
   2789 }
   2790