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Configure revision 1.19
      1 #! /usr/bin/env perl
      2 # -*- mode: perl; -*-
      3 # Copyright 2016-2018 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 FindBin;
     15 use lib "$FindBin::Bin/util/perl";
     16 use File::Basename;
     17 use File::Spec::Functions qw/:DEFAULT abs2rel rel2abs/;
     18 use File::Path qw/mkpath/;
     19 use OpenSSL::Glob;
     20 
     21 # see INSTALL for instructions.
     22 
     23 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";
     24 
     25 # Options:
     26 #
     27 # --config      add the given configuration file, which will be read after
     28 #               any "Configurations*" files that are found in the same
     29 #               directory as this script.
     30 # --prefix      prefix for the OpenSSL installation, which includes the
     31 #               directories bin, lib, include, share/man, share/doc/openssl
     32 #               This becomes the value of INSTALLTOP in Makefile
     33 #               (Default: /usr/local)
     34 # --openssldir  OpenSSL data area, such as openssl.cnf, certificates and keys.
     35 #               If it's a relative directory, it will be added on the directory
     36 #               given with --prefix.
     37 #               This becomes the value of OPENSSLDIR in Makefile and in C.
     38 #               (Default: PREFIX/ssl)
     39 #
     40 # --cross-compile-prefix Add specified prefix to binutils components.
     41 #
     42 # --api         One of 0.9.8, 1.0.0 or 1.1.0.  Do not compile support for
     43 #               interfaces deprecated as of the specified OpenSSL version.
     44 #
     45 # no-hw-xxx     do not compile support for specific crypto hardware.
     46 #               Generic OpenSSL-style methods relating to this support
     47 #               are always compiled but return NULL if the hardware
     48 #               support isn't compiled.
     49 # no-hw         do not compile support for any crypto hardware.
     50 # [no-]threads  [don't] try to create a library that is suitable for
     51 #               multithreaded applications (default is "threads" if we
     52 #               know how to do it)
     53 # [no-]shared	[don't] try to create shared libraries when supported.
     54 # [no-]pic      [don't] try to build position independent code when supported.
     55 #               If disabled, it also disables shared and dynamic-engine.
     56 # no-asm        do not use assembler
     57 # no-dso        do not compile in any native shared-library methods. This
     58 #               will ensure that all methods just return NULL.
     59 # no-egd        do not compile support for the entropy-gathering daemon APIs
     60 # [no-]zlib     [don't] compile support for zlib compression.
     61 # zlib-dynamic	Like "zlib", but the zlib library is expected to be a shared
     62 #		library and will be loaded in run-time by the OpenSSL library.
     63 # sctp          include SCTP support
     64 # enable-weak-ssl-ciphers
     65 #               Enable weak ciphers that are disabled by default.
     66 # 386           generate 80386 code in assembly modules
     67 # no-sse2       disables IA-32 SSE2 code in assembly modules, the above
     68 #               mentioned '386' option implies this one
     69 # no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
     70 # -<xxx> +<xxx> compiler options are passed through
     71 # -static       while -static is also a pass-through compiler option (and
     72 #               as such is limited to environments where it's actually
     73 #               meaningful), it triggers a number configuration options,
     74 #               namely no-dso, no-pic, no-shared and no-threads. It is
     75 #               argued that the only reason to produce statically linked
     76 #               binaries (and in context it means executables linked with
     77 #               -static flag, and not just executables linked with static
     78 #               libcrypto.a) is to eliminate dependency on specific run-time,
     79 #               a.k.a. libc version. The mentioned config options are meant
     80 #               to achieve just that. Unfortunately on Linux it's impossible
     81 #               to eliminate the dependency completely for openssl executable
     82 #               because of getaddrinfo and gethostbyname calls, which can
     83 #               invoke dynamically loadable library facility anyway to meet
     84 #               the lookup requests. For this reason on Linux statically
     85 #               linked openssl executable has rather debugging value than
     86 #               production quality.
     87 #
     88 # DEBUG_SAFESTACK use type-safe stacks to enforce type-safety on stack items
     89 #		provided to stack calls. Generates unique stack functions for
     90 #		each possible stack type.
     91 # BN_LLONG	use the type 'long long' in crypto/bn/bn.h
     92 # RC4_CHAR	use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
     93 # Following are set automatically by this script
     94 #
     95 # MD5_ASM	use some extra md5 assembler,
     96 # SHA1_ASM	use some extra sha1 assembler, must define L_ENDIAN for x86
     97 # RMD160_ASM	use some extra ripemd160 assembler,
     98 # SHA256_ASM	sha256_block is implemented in assembler
     99 # SHA512_ASM	sha512_block is implemented in assembler
    100 # AES_ASM	AES_[en|de]crypt is implemented in assembler
    101 
    102 # Minimum warning options... any contributions to OpenSSL should at least get
    103 # past these.
    104 
    105 # DEBUG_UNUSED enables __owur (warn unused result) checks.
    106 my $gcc_devteam_warn = "-DDEBUG_UNUSED"
    107         # -DPEDANTIC complements -pedantic and is meant to mask code that
    108         # is not strictly standard-compliant and/or implementation-specific,
    109         # e.g. inline assembly, disregards to alignment requirements, such
    110         # that -pedantic would complain about. Incidentally -DPEDANTIC has
    111         # to be used even in sanitized builds, because sanitizer too is
    112         # supposed to and does take notice of non-standard behaviour. Then
    113         # -pedantic with pre-C9x compiler would also complain about 'long
    114         # long' not being supported. As 64-bit algorithms are common now,
    115         # it grew impossible to resolve this without sizeable additional
    116         # code, so we just tell compiler to be pedantic about everything
    117         # but 'long long' type.
    118         . " -DPEDANTIC -pedantic -Wno-long-long"
    119         . " -Wall"
    120         . " -Wextra"
    121         . " -Wno-unused-parameter"
    122         . " -Wno-missing-field-initializers"
    123         . " -Wsign-compare"
    124         . " -Wmissing-prototypes"
    125         . " -Wshadow"
    126         . " -Wformat"
    127         . " -Wtype-limits"
    128         . " -Wundef"
    129         . " -Werror"
    130         ;
    131 
    132 # These are used in addition to $gcc_devteam_warn when the compiler is clang.
    133 # TODO(openssl-team): fix problems and investigate if (at least) the
    134 # following warnings can also be enabled:
    135 #       -Wswitch-enum
    136 #       -Wcast-align
    137 #       -Wunreachable-code
    138 #       -Wlanguage-extension-token -- no, we use asm()
    139 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
    140 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
    141 my $clang_devteam_warn = ""
    142         . " -Qunused-arguments"
    143         . " -Wno-language-extension-token"
    144         . " -Wno-extended-offsetof"
    145         . " -Wconditional-uninitialized"
    146         . " -Wincompatible-pointer-types-discards-qualifiers"
    147         . " -Wmissing-variable-declarations"
    148         ;
    149 
    150 # This adds backtrace information to the memory leak info.  Is only used
    151 # when crypto-mdebug-backtrace is enabled.
    152 my $memleak_devteam_backtrace = "-rdynamic";
    153 
    154 my $strict_warnings = 0;
    155 
    156 # As for $BSDthreads. Idea is to maintain "collective" set of flags,
    157 # which would cover all BSD flavors. -pthread applies to them all,
    158 # but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
    159 # -lc_r, which is sufficient. FreeBSD 4.x expands it as -lc_r,
    160 # which has to be accompanied by explicit -D_THREAD_SAFE and
    161 # sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
    162 # seems to be sufficient?
    163 our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
    164 
    165 #
    166 # API compatibility name to version number mapping.
    167 #
    168 my $maxapi = "1.1.0";           # API for "no-deprecated" builds
    169 my $apitable = {
    170     "1.1.0" => "0x10100000L",
    171     "1.0.0" => "0x10000000L",
    172     "0.9.8" => "0x00908000L",
    173 };
    174 
    175 our %table = ();
    176 our %config = ();
    177 our %withargs = ();
    178 
    179 # Forward declarations ###############################################
    180 
    181 # read_config(filename)
    182 #
    183 # Reads a configuration file and populates %table with the contents
    184 # (which the configuration file places in %targets).
    185 sub read_config;
    186 
    187 # resolve_config(target)
    188 #
    189 # Resolves all the late evaluations, inheritances and so on for the
    190 # chosen target and any target it inherits from.
    191 sub resolve_config;
    192 
    193 
    194 # Information collection #############################################
    195 
    196 # Unified build supports separate build dir
    197 my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
    198 my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
    199 my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));
    200 
    201 my $local_config_envname = 'OPENSSL_LOCAL_CONFIG_DIR';
    202 
    203 $config{sourcedir} = abs2rel($srcdir);
    204 $config{builddir} = abs2rel($blddir);
    205 
    206 # Collect reconfiguration information if needed
    207 my @argvcopy=@ARGV;
    208 
    209 if (grep /^reconf(igure)?$/, @argvcopy) {
    210     if (-f "./configdata.pm") {
    211 	my $file = "./configdata.pm";
    212 	unless (my $return = do $file) {
    213 	    die "couldn't parse $file: $@" if $@;
    214             die "couldn't do $file: $!"    unless defined $return;
    215             die "couldn't run $file"       unless $return;
    216 	}
    217 
    218 	@argvcopy = defined($configdata::config{perlargv}) ?
    219 	    @{$configdata::config{perlargv}} : ();
    220 	die "Incorrect data to reconfigure, please do a normal configuration\n"
    221 	    if (grep(/^reconf/,@argvcopy));
    222 	$ENV{CROSS_COMPILE} = $configdata::config{cross_compile_prefix}
    223 	    if defined($configdata::config{cross_compile_prefix});
    224 	$ENV{CC} = $configdata::config{cc}
    225 	    if defined($configdata::config{cc});
    226 	$ENV{BUILDFILE} = $configdata::config{build_file}
    227 	    if defined($configdata::config{build_file});
    228 	$ENV{$local_config_envname} = $configdata::config{local_config_dir}
    229 	    if defined($configdata::config{local_config_dir});
    230 
    231 	print "Reconfiguring with: ", join(" ",@argvcopy), "\n";
    232 	print "    CROSS_COMPILE = ",$ENV{CROSS_COMPILE},"\n"
    233 	    if $ENV{CROSS_COMPILE};
    234 	print "    CC = ",$ENV{CC},"\n" if $ENV{CC};
    235 	print "    BUILDFILE = ",$ENV{BUILDFILE},"\n" if $ENV{BUILDFILE};
    236 	print "    $local_config_envname = ",$ENV{$local_config_envname},"\n"
    237 	    if $ENV{$local_config_envname};
    238     } else {
    239 	die "Insufficient data to reconfigure, please do a normal configuration\n";
    240     }
    241 }
    242 
    243 $config{perlargv} = [ @argvcopy ];
    244 
    245 # Collect version numbers
    246 $config{version} = "unknown";
    247 $config{version_num} = "unknown";
    248 $config{shlib_version_number} = "unknown";
    249 $config{shlib_version_history} = "unknown";
    250 
    251 collect_information(
    252     collect_from_file(catfile($srcdir,'include/openssl/opensslv.h')),
    253     qr/OPENSSL.VERSION.TEXT.*OpenSSL (\S+) / => sub { $config{version} = $1; },
    254     qr/OPENSSL.VERSION.NUMBER.*(0x\S+)/	     => sub { $config{version_num}=$1 },
    255     qr/SHLIB_VERSION_NUMBER *"([^"]+)"/	     => sub { $config{shlib_version_number}=$1 },
    256     qr/SHLIB_VERSION_HISTORY *"([^"]*)"/     => sub { $config{shlib_version_history}=$1 }
    257     );
    258 if ($config{shlib_version_history} ne "") { $config{shlib_version_history} .= ":"; }
    259 
    260 ($config{major}, $config{minor})
    261     = ($config{version} =~ /^([0-9]+)\.([0-9\.]+)/);
    262 ($config{shlib_major}, $config{shlib_minor})
    263     = ($config{shlib_version_number} =~ /^([0-9]+)\.([0-9\.]+)/);
    264 die "erroneous version information in opensslv.h: ",
    265     "$config{major}, $config{minor}, $config{shlib_major}, $config{shlib_minor}\n"
    266     if ($config{major} eq "" || $config{minor} eq ""
    267 	|| $config{shlib_major} eq "" ||  $config{shlib_minor} eq "");
    268 
    269 # Collect target configurations
    270 
    271 my $pattern = catfile(dirname($0), "Configurations", "*.conf");
    272 foreach (sort glob($pattern)) {
    273     &read_config($_);
    274 }
    275 
    276 if (defined $ENV{$local_config_envname}) {
    277     if ($^O eq 'VMS') {
    278         # VMS environment variables are logical names,
    279         # which can be used as is
    280         $pattern = $local_config_envname . ':' . '*.conf';
    281     } else {
    282         $pattern = catfile($ENV{$local_config_envname}, '*.conf');
    283     }
    284 
    285     foreach (sort glob($pattern)) {
    286         &read_config($_);
    287     }
    288 }
    289 
    290 
    291 print "Configuring OpenSSL version $config{version} ($config{version_num})\n";
    292 
    293 $config{prefix}="";
    294 $config{openssldir}="";
    295 $config{processor}="";
    296 $config{libdir}="";
    297 $config{cross_compile_prefix}="";
    298 $config{fipslibdir}="/usr/local/ssl/fips-2.0/lib/";
    299 my $nofipscanistercheck=0;
    300 $config{baseaddr}="0xFB00000";
    301 my $auto_threads=1;    # enable threads automatically? true by default
    302 my $default_ranlib;
    303 $config{fips}=0;
    304 
    305 # Top level directories to build
    306 $config{dirs} = [ "crypto", "ssl", "engines", "apps", "test", "util", "tools", "fuzz" ];
    307 # crypto/ subdirectories to build
    308 $config{sdirs} = [
    309     "objects",
    310     "md2", "md4", "md5", "sha", "mdc2", "hmac", "ripemd", "whrlpool", "poly1305", "blake2",
    311     "des", "aes", "rc2", "rc4", "rc5", "idea", "bf", "cast", "camellia", "seed", "chacha", "modes",
    312     "bn", "ec", "rsa", "dsa", "dh", "dso", "engine",
    313     "buffer", "bio", "stack", "lhash", "rand", "err",
    314     "evp", "asn1", "pem", "x509", "x509v3", "conf", "txt_db", "pkcs7", "pkcs12", "comp", "ocsp", "ui",
    315     "cms", "ts", "srp", "cmac", "ct", "async", "kdf"
    316     ];
    317 
    318 # Known TLS and DTLS protocols
    319 my @tls = qw(ssl3 tls1 tls1_1 tls1_2);
    320 my @dtls = qw(dtls1 dtls1_2);
    321 
    322 # Explicitly known options that are possible to disable.  They can
    323 # be regexps, and will be used like this: /^no-${option}$/
    324 # For developers: keep it sorted alphabetically
    325 
    326 my @disablables = (
    327     "afalgeng",
    328     "asan",
    329     "asm",
    330     "async",
    331     "autoalginit",
    332     "autoerrinit",
    333     "bf",
    334     "blake2",
    335     "camellia",
    336     "capieng",
    337     "cast",
    338     "chacha",
    339     "cmac",
    340     "cms",
    341     "comp",
    342     "crypto-mdebug",
    343     "crypto-mdebug-backtrace",
    344     "ct",
    345     "deprecated",
    346     "des",
    347     "dgram",
    348     "dh",
    349     "dsa",
    350     "dso",
    351     "dtls",
    352     "dynamic-engine",
    353     "ec",
    354     "ec2m",
    355     "ecdh",
    356     "ecdsa",
    357     "ec_nistp_64_gcc_128",
    358     "egd",
    359     "engine",
    360     "err",
    361     "filenames",
    362     "fuzz-libfuzzer",
    363     "fuzz-afl",
    364     "gost",
    365     "heartbeats",
    366     "hw(-.+)?",
    367     "idea",
    368     "makedepend",
    369     "md2",
    370     "md4",
    371     "mdc2",
    372     "msan",
    373     "multiblock",
    374     "nextprotoneg",
    375     "ocb",
    376     "ocsp",
    377     "pic",
    378     "poly1305",
    379     "posix-io",
    380     "psk",
    381     "rc2",
    382     "rc4",
    383     "rc5",
    384     "rdrand",
    385     "rfc3779",
    386     "rmd160",
    387     "scrypt",
    388     "sctp",
    389     "seed",
    390     "shared",
    391     "sock",
    392     "srp",
    393     "srtp",
    394     "sse2",
    395     "ssl",
    396     "ssl-trace",
    397     "static-engine",
    398     "stdio",
    399     "threads",
    400     "tls",
    401     "ts",
    402     "ubsan",
    403     "ui",
    404     "unit-test",
    405     "whirlpool",
    406     "weak-ssl-ciphers",
    407     "zlib",
    408     "zlib-dynamic",
    409     );
    410 foreach my $proto ((@tls, @dtls))
    411 	{
    412 	push(@disablables, $proto);
    413 	push(@disablables, "$proto-method");
    414 	}
    415 
    416 my %deprecated_disablables = (
    417     "ssl2" => undef,
    418     "buf-freelists" => undef,
    419     "ripemd" => "rmd160"
    420     );
    421 
    422 # All of the following is disabled by default (RC5 was enabled before 0.9.8):
    423 
    424 our %disabled = ( # "what"         => "comment"
    425                   "asan"		=> "default",
    426 		  "crypto-mdebug"       => "default",
    427 		  "crypto-mdebug-backtrace" => "default",
    428 		  "ec_nistp_64_gcc_128" => "default",
    429 		  "egd"                 => "default",
    430 		  "fuzz-libfuzzer"	=> "default",
    431 		  "fuzz-afl"		=> "default",
    432 		  "heartbeats"          => "default",
    433 		  "md2"                 => "default",
    434                   "msan"                => "default",
    435 		  "rc5"                 => "default",
    436 		  "sctp"                => "default",
    437 		  "ssl-trace"           => "default",
    438 		  "ssl3"                => "default",
    439 		  "ssl3-method"         => "default",
    440                   "ubsan"		=> "default",
    441 		  "unit-test"           => "default",
    442 		  "weak-ssl-ciphers"    => "default",
    443 		  "zlib"                => "default",
    444 		  "zlib-dynamic"        => "default",
    445 		);
    446 
    447 # Note: => pair form used for aesthetics, not to truly make a hash table
    448 my @disable_cascades = (
    449     # "what"		=> [ "cascade", ... ]
    450     sub { $config{processor} eq "386" }
    451 			=> [ "sse2" ],
    452     "ssl"		=> [ "ssl3" ],
    453     "ssl3-method"	=> [ "ssl3" ],
    454     "zlib"		=> [ "zlib-dynamic" ],
    455     "des"		=> [ "mdc2" ],
    456     "ec"		=> [ "ecdsa", "ecdh" ],
    457 
    458     "dgram"		=> [ "dtls", "sctp" ],
    459     "sock"		=> [ "dgram" ],
    460     "dtls"		=> [ @dtls ],
    461     sub { 0 == scalar grep { !$disabled{$_} } @dtls }
    462 			=> [ "dtls" ],
    463 
    464     "tls"		=> [ @tls ],
    465     sub { 0 == scalar grep { !$disabled{$_} } @tls }
    466 			=> [ "tls" ],
    467 
    468     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
    469 
    470     # Without DSO, we can't load dynamic engines, so don't build them dynamic
    471     "dso"               => [ "dynamic-engine" ],
    472 
    473     # Without position independent code, there can be no shared libraries or DSOs
    474     "pic"               => [ "shared" ],
    475     "shared"            => [ "dynamic-engine" ],
    476     "engine"            => [ "afalgeng" ],
    477 
    478     # no-autoalginit is only useful when building non-shared
    479     "autoalginit"       => [ "shared", "apps" ],
    480 
    481     "stdio"             => [ "apps", "capieng", "egd" ],
    482     "apps"              => [ "tests" ],
    483     "comp"		=> [ "zlib" ],
    484     sub { !$disabled{"unit-test"} } => [ "heartbeats" ],
    485 
    486     sub { !$disabled{"msan"} } => [ "asm" ],
    487     );
    488 
    489 # Avoid protocol support holes.  Also disable all versions below N, if version
    490 # N is disabled while N+1 is enabled.
    491 #
    492 my @list = (reverse @tls);
    493 while ((my $first, my $second) = (shift @list, shift @list)) {
    494     last unless @list;
    495     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
    496 			      => [ @list ] );
    497     unshift @list, $second;
    498 }
    499 my @list = (reverse @dtls);
    500 while ((my $first, my $second) = (shift @list, shift @list)) {
    501     last unless @list;
    502     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
    503 			      => [ @list ] );
    504     unshift @list, $second;
    505 }
    506 
    507 # Explicit "no-..." options will be collected in %disabled along with the defaults.
    508 # To remove something from %disabled, use "enable-foo".
    509 # For symmetry, "disable-foo" is a synonym for "no-foo".
    510 
    511 &usage if ($#ARGV < 0);
    512 
    513 my $user_cflags="";
    514 my @user_defines=();
    515 $config{openssl_api_defines}=[];
    516 $config{openssl_algorithm_defines}=[];
    517 $config{openssl_thread_defines}=[];
    518 $config{openssl_sys_defines}=[];
    519 $config{openssl_other_defines}=[];
    520 my $libs="";
    521 my $target="";
    522 $config{options}="";
    523 $config{build_type} = "release";
    524 
    525 my %unsupported_options = ();
    526 my %deprecated_options = ();
    527 while (@argvcopy)
    528 	{
    529 	$_ = shift @argvcopy;
    530 	# VMS is a case insensitive environment, and depending on settings
    531 	# out of our control, we may receive options uppercased.  Let's
    532 	# downcase at least the part before any equal sign.
    533 	if ($^O eq "VMS")
    534 		{
    535 		s/^([^=]*)/lc($1)/e;
    536 		}
    537 	s /^-no-/no-/; # some people just can't read the instructions
    538 
    539 	# rewrite some options in "enable-..." form
    540 	s /^-?-?shared$/enable-shared/;
    541 	s /^sctp$/enable-sctp/;
    542 	s /^threads$/enable-threads/;
    543 	s /^zlib$/enable-zlib/;
    544 	s /^zlib-dynamic$/enable-zlib-dynamic/;
    545 
    546         if (/^(no|disable|enable)-(.+)$/)
    547                 {
    548                 my $word = $2;
    549                 if (!exists $deprecated_disablables{$word}
    550                         && !grep { $word =~ /^${_}$/ } @disablables)
    551                         {
    552                         $unsupported_options{$_} = 1;
    553                         next;
    554                         }
    555                 }
    556         if (/^no-(.+)$/ || /^disable-(.+)$/)
    557                 {
    558                 foreach my $proto ((@tls, @dtls))
    559                         {
    560                         if ($1 eq "$proto-method")
    561                                 {
    562                                 $disabled{"$proto"} = "option($proto-method)";
    563                                 last;
    564                                 }
    565                         }
    566                 if ($1 eq "dtls")
    567                         {
    568                         foreach my $proto (@dtls)
    569                                 {
    570                                 $disabled{$proto} = "option(dtls)";
    571                                 }
    572                         $disabled{"dtls"} = "option(dtls)";
    573                         }
    574                 elsif ($1 eq "ssl")
    575                         {
    576                         # Last one of its kind
    577                         $disabled{"ssl3"} = "option(ssl)";
    578                         }
    579                 elsif ($1 eq "tls")
    580                         {
    581                         # XXX: Tests will fail if all SSL/TLS
    582                         # protocols are disabled.
    583                         foreach my $proto (@tls)
    584                                 {
    585                                 $disabled{$proto} = "option(tls)";
    586                                 }
    587                         }
    588                 elsif ($1 eq "static-engine")
    589                         {
    590                         delete $disabled{"dynamic-engine"};
    591                         }
    592                 elsif ($1 eq "dynamic-engine")
    593                         {
    594                         $disabled{"dynamic-engine"} = "option";
    595                         }
    596                 elsif (exists $deprecated_disablables{$1})
    597                         {
    598                         $deprecated_options{$_} = 1;
    599                         if (defined $deprecated_disablables{$1})
    600                                 {
    601                                 $disabled{$deprecated_disablables{$1}} = "option";
    602                                 }
    603                         }
    604                 else
    605                         {
    606                         $disabled{$1} = "option";
    607                         }
    608 		# No longer an automatic choice
    609 		$auto_threads = 0 if ($1 eq "threads");
    610 		}
    611 	elsif (/^enable-(.+)$/)
    612 		{
    613                 if ($1 eq "static-engine")
    614                         {
    615                         $disabled{"dynamic-engine"} = "option";
    616                         }
    617                 elsif ($1 eq "dynamic-engine")
    618                         {
    619                         delete $disabled{"dynamic-engine"};
    620                         }
    621                 elsif ($1 eq "zlib-dynamic")
    622                         {
    623                         delete $disabled{"zlib"};
    624                         }
    625 		my $algo = $1;
    626 		delete $disabled{$algo};
    627 
    628 		# No longer an automatic choice
    629 		$auto_threads = 0 if ($1 eq "threads");
    630 		}
    631 	elsif (/^--strict-warnings$/)
    632 		{
    633 		$strict_warnings = 1;
    634 		}
    635 	elsif (/^--debug$/)
    636 		{
    637 		$config{build_type} = "debug";
    638 		}
    639 	elsif (/^--release$/)
    640 		{
    641 		$config{build_type} = "release";
    642 		}
    643 	elsif (/^386$/)
    644 		{ $config{processor}=386; }
    645 	elsif (/^fips$/)
    646 		{
    647 		$config{fips}=1;
    648 		}
    649 	elsif (/^rsaref$/)
    650 		{
    651 		# No RSAref support any more since it's not needed.
    652 		# The check for the option is there so scripts aren't
    653 		# broken
    654 		}
    655 	elsif (/^nofipscanistercheck$/)
    656 		{
    657 		$config{fips} = 1;
    658 		$nofipscanistercheck = 1;
    659 		}
    660 	elsif (/^[-+]/)
    661 		{
    662 		if (/^--prefix=(.*)$/)
    663 			{
    664 			$config{prefix}=$1;
    665 			die "Directory given with --prefix MUST be absolute\n"
    666 				unless file_name_is_absolute($config{prefix});
    667 			}
    668 		elsif (/^--api=(.*)$/)
    669 			{
    670 			$config{api}=$1;
    671 			}
    672 		elsif (/^--libdir=(.*)$/)
    673 			{
    674 			$config{libdir}=$1;
    675 			}
    676 		elsif (/^--openssldir=(.*)$/)
    677 			{
    678 			$config{openssldir}=$1;
    679 			}
    680 		elsif (/^--with-zlib-lib=(.*)$/)
    681 			{
    682 			$withargs{zlib_lib}=$1;
    683 			}
    684 		elsif (/^--with-zlib-include=(.*)$/)
    685 			{
    686 			$withargs{zlib_include}=$1;
    687 			}
    688 		elsif (/^--with-fuzzer-lib=(.*)$/)
    689 			{
    690 			$withargs{fuzzer_lib}=$1;
    691 			}
    692 		elsif (/^--with-fuzzer-include=(.*)$/)
    693 			{
    694 			$withargs{fuzzer_include}=$1;
    695 			}
    696 		elsif (/^--with-fipslibdir=(.*)$/)
    697 			{
    698 			$config{fipslibdir}="$1/";
    699 			}
    700 		elsif (/^--with-baseaddr=(.*)$/)
    701 			{
    702 			$config{baseaddr}="$1";
    703 			}
    704 		elsif (/^--cross-compile-prefix=(.*)$/)
    705 			{
    706 			$config{cross_compile_prefix}=$1;
    707 			}
    708 		elsif (/^--config=(.*)$/)
    709 			{
    710 			read_config $1;
    711 			}
    712 		elsif (/^-[lL](.*)$/ or /^-Wl,/)
    713 			{
    714 			$libs.=$_." ";
    715 			}
    716 		elsif (/^-rpath$/ or /^-R$/)
    717 			# -rpath is the OSF1 rpath flag
    718 			# -R is the old Solaris rpath flag
    719 			{
    720 			my $rpath = shift(@argvcopy) || "";
    721 			$rpath .= " " if $rpath ne "";
    722 			$libs.=$_." ".$rpath;
    723 			}
    724 		elsif (/^-static$/)
    725 			{
    726 			$libs.=$_." ";
    727 			$disabled{"dso"} = "forced";
    728 			$disabled{"pic"} = "forced";
    729 			$disabled{"shared"} = "forced";
    730 			$disabled{"threads"} = "forced";
    731 			}
    732 		elsif (/^-D(.*)$/)
    733 			{
    734 			push @user_defines, $1;
    735 			}
    736 		else	# common if (/^[-+]/), just pass down...
    737 			{
    738 			$_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
    739 			$user_cflags.=" ".$_;
    740 			}
    741 		}
    742 	else
    743 		{
    744 		die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
    745 		$target=$_;
    746 		}
    747 	unless ($_ eq $target || /^no-/ || /^disable-/)
    748 		{
    749 		# "no-..." follows later after implied disactivations
    750 		# have been derived.  (Don't take this too seriously,
    751 		# we really only write OPTIONS to the Makefile out of
    752 		# nostalgia.)
    753 
    754 		if ($config{options} eq "")
    755 			{ $config{options} = $_; }
    756 		else
    757 			{ $config{options} .= " ".$_; }
    758 		}
    759 
    760         if (defined($config{api}) && !exists $apitable->{$config{api}}) {
    761 		die "***** Unsupported api compatibility level: $config{api}\n",
    762         }
    763 
    764 	if (keys %deprecated_options)
    765 		{
    766 		warn "***** Deprecated options: ",
    767 			join(", ", keys %deprecated_options), "\n";
    768 		}
    769 	if (keys %unsupported_options)
    770 		{
    771 		die "***** Unsupported options: ",
    772 			join(", ", keys %unsupported_options), "\n";
    773 		}
    774 	}
    775 
    776 if ($libs =~ /(^|\s)-Wl,-rpath,/
    777     && !$disabled{shared}
    778     && !($disabled{asan} && $disabled{msan} && $disabled{ubsan})) {
    779     die "***** Cannot simultaneously use -rpath, shared libraries, and\n",
    780 	"***** any of asan, msan or ubsan\n";
    781 }
    782 
    783 if ($config{fips})
    784 	{
    785 	delete $disabled{"shared"} if ($disabled{"shared"} =~ /^default/);
    786 	}
    787 else
    788 	{
    789 	@{$config{dirs}} = grep !/^fips$/, @{$config{dirs}};
    790 	}
    791 
    792 my @tocheckfor = (keys %disabled);
    793 while (@tocheckfor) {
    794     my %new_tocheckfor = ();
    795     my @cascade_copy = (@disable_cascades);
    796     while (@cascade_copy) {
    797 	my ($test, $descendents) = (shift @cascade_copy, shift @cascade_copy);
    798 	if (ref($test) eq "CODE" ? $test->() : defined($disabled{$test})) {
    799 	    foreach(grep { !defined($disabled{$_}) } @$descendents) {
    800 		$new_tocheckfor{$_} = 1; $disabled{$_} = "forced";
    801 	    }
    802 	}
    803     }
    804     @tocheckfor = (keys %new_tocheckfor);
    805 }
    806 
    807 our $die = sub { die @_; };
    808 if ($target eq "TABLE") {
    809     local $die = sub { warn @_; };
    810     foreach (sort keys %table) {
    811 	print_table_entry($_, "TABLE");
    812     }
    813     exit 0;
    814 }
    815 
    816 if ($target eq "LIST") {
    817     foreach (sort keys %table) {
    818 	print $_,"\n" unless $table{$_}->{template};
    819     }
    820     exit 0;
    821 }
    822 
    823 if ($target eq "HASH") {
    824     local $die = sub { warn @_; };
    825     print "%table = (\n";
    826     foreach (sort keys %table) {
    827 	print_table_entry($_, "HASH");
    828     }
    829     exit 0;
    830 }
    831 
    832 # Backward compatibility?
    833 if ($target =~ m/^CygWin32(-.*)$/) {
    834     $target = "Cygwin".$1;
    835 }
    836 
    837 foreach (sort (keys %disabled))
    838 	{
    839 	$config{options} .= " no-$_";
    840 
    841 	printf "    no-%-12s %-10s", $_, "[$disabled{$_}]";
    842 
    843 	if (/^dso$/)
    844 		{ }
    845 	elsif (/^threads$/)
    846 		{ }
    847 	elsif (/^shared$/)
    848 		{ }
    849 	elsif (/^pic$/)
    850 		{ }
    851 	elsif (/^zlib$/)
    852 		{ }
    853 	elsif (/^dynamic-engine$/)
    854 		{ }
    855 	elsif (/^makedepend$/)
    856 		{ }
    857 	elsif (/^zlib-dynamic$/)
    858 		{ }
    859 	elsif (/^sse2$/)
    860 		{ }
    861 	elsif (/^engine$/)
    862 		{
    863 		@{$config{dirs}} = grep !/^engines$/, @{$config{dirs}};
    864 		@{$config{sdirs}} = grep !/^engine$/, @{$config{sdirs}};
    865 		push @{$config{openssl_other_defines}}, "OPENSSL_NO_ENGINE";
    866 		print " OPENSSL_NO_ENGINE (skip engines)";
    867 		}
    868 	else
    869 		{
    870 		my ($WHAT, $what);
    871 
    872 		($WHAT = $what = $_) =~ tr/[\-a-z]/[_A-Z]/;
    873 
    874 		# Fix up C macro end names
    875 		$WHAT = "RMD160" if $what eq "ripemd";
    876 
    877 		# fix-up crypto/directory name(s)
    878 		$what = "ripemd" if $what eq "rmd160";
    879 		$what = "whrlpool" if $what eq "whirlpool";
    880 
    881 		if ($what ne "async" && $what ne "err"
    882 		    && grep { $_ eq $what } @{$config{sdirs}})
    883 			{
    884 			push @{$config{openssl_algorithm_defines}}, "OPENSSL_NO_$WHAT";
    885 			@{$config{sdirs}} = grep { $_ ne $what} @{$config{sdirs}};
    886 
    887 			print " OPENSSL_NO_$WHAT (skip dir)";
    888 			}
    889 		else
    890 			{
    891 			push @{$config{openssl_other_defines}}, "OPENSSL_NO_$WHAT";
    892 			print " OPENSSL_NO_$WHAT";
    893 			}
    894 		}
    895 
    896 	print "\n";
    897 	}
    898 
    899 print "Configuring for $target\n";
    900 
    901 # Support for legacy targets having a name starting with 'debug-'
    902 my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
    903 if ($d) {
    904     $config{build_type} = "debug";
    905 
    906     # If we do not find debug-foo in the table, the target is set to foo.
    907     if (!$table{$target}) {
    908 	$target = $t;
    909     }
    910 }
    911 $config{target} = $target;
    912 my %target = resolve_config($target);
    913 
    914 &usage if (!%target || $target{template});
    915 
    916 my %conf_files = map { $_ => 1 } (@{$target{_conf_fname_int}});
    917 $config{conf_files} = [ sort keys %conf_files ];
    918 %target = ( %{$table{DEFAULTS}}, %target );
    919 
    920 $target{exe_extension}="";
    921 $target{exe_extension}=".exe" if ($config{target} eq "DJGPP"
    922                                   || $config{target} =~ /^(?:Cygwin|mingw)/);
    923 $target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
    924 
    925 ($target{shared_extension_simple}=$target{shared_extension})
    926     =~ s|\.\$\(SHLIB_MAJOR\)\.\$\(SHLIB_MINOR\)||;
    927 $target{dso_extension}=$target{shared_extension_simple};
    928 ($target{shared_import_extension}=$target{shared_extension_simple}.".a")
    929     if ($config{target} =~ /^(?:Cygwin|mingw)/);
    930 
    931 
    932 $config{cross_compile_prefix} = $ENV{'CROSS_COMPILE'}
    933     if $config{cross_compile_prefix} eq "";
    934 
    935 # Allow overriding the names of some tools.  USE WITH CARE
    936 # Note: only Unix cares about HASHBANGPERL...  that explains
    937 # the default string.
    938 $config{perl} =    $ENV{'PERL'}    || ($^O ne "VMS" ? $^X : "perl");
    939 $config{hashbangperl} =
    940     $ENV{'HASHBANGPERL'}           || $ENV{'PERL'}     || "/usr/bin/env perl";
    941 $target{cc} =      $ENV{'CC'}      || $target{cc}      || "cc";
    942 $target{ranlib} =  $ENV{'RANLIB'}  || $target{ranlib}  ||
    943                    (which("$config{cross_compile_prefix}ranlib") ?
    944                           "\$(CROSS_COMPILE)ranlib" : "true");
    945 $target{ar} =      $ENV{'AR'}      || $target{ar}      || "ar";
    946 $target{nm} =      $ENV{'NM'}      || $target{nm}      || "nm";
    947 $target{rc} =
    948     $ENV{'RC'}  || $ENV{'WINDRES'} || $target{rc}      || "windres";
    949 
    950 # Allow overriding the build file name
    951 $target{build_file} = $ENV{BUILDFILE} || $target{build_file} || "Makefile";
    952 
    953 # Cache information necessary for reconfiguration
    954 $config{cc} = $target{cc};
    955 $config{build_file} = $target{build_file};
    956 
    957 # For cflags, lflags, plib_lflags, ex_libs and defines, add the debug_
    958 # or release_ attributes.
    959 # Do it in such a way that no spurious space is appended (hence the grep).
    960 $config{defines} = [];
    961 $config{cflags} = "";
    962 $config{ex_libs} = "";
    963 $config{shared_ldflag} = "";
    964 
    965 # Make sure build_scheme is consistent.
    966 $target{build_scheme} = [ $target{build_scheme} ]
    967     if ref($target{build_scheme}) ne "ARRAY";
    968 
    969 my ($builder, $builder_platform, @builder_opts) =
    970     @{$target{build_scheme}};
    971 
    972 foreach my $checker (($builder_platform."-".$target{build_file}."-checker.pm",
    973                       $builder_platform."-checker.pm")) {
    974     my $checker_path = catfile($srcdir, "Configurations", $checker);
    975     if (-f $checker_path) {
    976         my $fn = $ENV{CONFIGURE_CHECKER_WARN}
    977             ? sub { warn $@; } : sub { die $@; };
    978         if (! do $checker_path) {
    979             if ($@) {
    980                 $fn->($@);
    981             } elsif ($!) {
    982                 $fn->($!);
    983             } else {
    984                 $fn->("The detected tools didn't match the platform\n");
    985             }
    986         }
    987         last;
    988     }
    989 }
    990 
    991 push @{$config{defines}}, "NDEBUG"    if $config{build_type} eq "release";
    992 
    993 if ($target =~ /^mingw/ && `$target{cc} --target-help 2>&1` =~ m/-mno-cygwin/m)
    994 	{
    995 	$config{cflags} .= " -mno-cygwin";
    996 	$config{shared_ldflag} .= " -mno-cygwin";
    997 	}
    998 
    999 if ($target =~ /linux.*-mips/ && !$disabled{asm} && $user_cflags !~ /-m(ips|arch=)/) {
   1000 	# minimally required architecture flags for assembly modules
   1001 	$config{cflags}="-mips2 $config{cflags}" if ($target =~ /mips32/);
   1002 	$config{cflags}="-mips3 $config{cflags}" if ($target =~ /mips64/);
   1003 }
   1004 
   1005 my $no_shared_warn=0;
   1006 my $no_user_cflags=0;
   1007 my $no_user_defines=0;
   1008 
   1009 # The DSO code currently always implements all functions so that no
   1010 # applications will have to worry about that from a compilation point
   1011 # of view. However, the "method"s may return zero unless that platform
   1012 # has support compiled in for them. Currently each method is enabled
   1013 # by a define "DSO_<name>" ... we translate the "dso_scheme" config
   1014 # string entry into using the following logic;
   1015 if (!$disabled{dso} && $target{dso_scheme} ne "")
   1016 	{
   1017 	$target{dso_scheme} =~ tr/[a-z]/[A-Z]/;
   1018 	if ($target{dso_scheme} eq "DLFCN")
   1019 		{
   1020 		unshift @{$config{defines}}, "DSO_DLFCN", "HAVE_DLFCN_H";
   1021 		}
   1022 	elsif ($target{dso_scheme} eq "DLFCN_NO_H")
   1023 		{
   1024 		unshift @{$config{defines}}, "DSO_DLFCN";
   1025 		}
   1026 	else
   1027 		{
   1028 		unshift @{$config{defines}}, "DSO_$target{dso_scheme}";
   1029 		}
   1030 	}
   1031 
   1032 $config{ex_libs}="$libs$config{ex_libs}" if ($libs ne "");
   1033 
   1034 if ($disabled{asm})
   1035 	{
   1036 	if ($config{fips})
   1037 		{
   1038 		@{$config{defines}} = grep !/^[BL]_ENDIAN$/, @{$config{defines}};
   1039 		@{$target{defines}} = grep !/^[BL]_ENDIAN$/, @{$target{defines}};
   1040 		}
   1041 	}
   1042 
   1043 # If threads aren't disabled, check how possible they are
   1044 unless ($disabled{threads}) {
   1045     if ($auto_threads) {
   1046         # Enabled by default, disable it forcibly if unavailable
   1047         if ($target{thread_scheme} eq "(unknown)") {
   1048             $disabled{threads} = "unavailable";
   1049         }
   1050     } else {
   1051         # The user chose to enable threads explicitly, let's see
   1052         # if there's a chance that's possible
   1053         if ($target{thread_scheme} eq "(unknown)") {
   1054             # If the user asked for "threads" and we don't have internal
   1055             # knowledge how to do it, [s]he is expected to provide any
   1056             # system-dependent compiler options that are necessary.  We
   1057             # can't truly check that the given options are correct, but
   1058             # we expect the user to know what [s]He is doing.
   1059             if ($no_user_cflags && $no_user_defines) {
   1060                 die "You asked for multi-threading support, but didn't\n"
   1061                     ,"provide any system-specific compiler options\n";
   1062             }
   1063         }
   1064     }
   1065 }
   1066 
   1067 # If threads still aren't disabled, add a C macro to ensure the source
   1068 # code knows about it.  Any other flag is taken care of by the configs.
   1069 unless($disabled{threads}) {
   1070     foreach (("defines", "openssl_thread_defines")) {
   1071         push @{$config{$_}}, "OPENSSL_THREADS";
   1072     }
   1073 }
   1074 
   1075 # With "deprecated" disable all deprecated features.
   1076 if (defined($disabled{"deprecated"})) {
   1077         $config{api} = $maxapi;
   1078 }
   1079 
   1080 if ($target{shared_target} eq "")
   1081 	{
   1082 	$no_shared_warn = 1
   1083 	    if ((!$disabled{shared} || !$disabled{"dynamic-engine"})
   1084 		&& !$config{fips});
   1085 	$disabled{shared} = "no-shared-target";
   1086 	$disabled{pic} = $disabled{shared} = $disabled{"dynamic-engine"} =
   1087 	    "no-shared-target";
   1088 	}
   1089 
   1090 if ($disabled{"dynamic-engine"}) {
   1091         push @{$config{defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
   1092         $config{dynamic_engines} = 0;
   1093 } else {
   1094         push @{$config{defines}}, "OPENSSL_NO_STATIC_ENGINE";
   1095         $config{dynamic_engines} = 1;
   1096 }
   1097 
   1098 unless ($disabled{"fuzz-libfuzzer"}) {
   1099     $config{cflags} .= "-fsanitize-coverage=edge,indirect-calls ";
   1100 }
   1101 
   1102 unless ($disabled{asan}) {
   1103     $config{cflags} .= "-fsanitize=address ";
   1104 }
   1105 
   1106 unless ($disabled{ubsan}) {
   1107     # -DPEDANTIC or -fnosanitize=alignment may also be required on some
   1108     # platforms.
   1109     $config{cflags} .= "-fsanitize=undefined -fno-sanitize-recover=all ";
   1110 }
   1111 
   1112 unless ($disabled{msan}) {
   1113   $config{cflags} .= "-fsanitize=memory ";
   1114 }
   1115 
   1116 unless ($disabled{"fuzz-libfuzzer"} && $disabled{"fuzz-afl"}
   1117         && $disabled{asan} && $disabled{ubsan} && $disabled{msan}) {
   1118     $config{cflags} .= "-fno-omit-frame-pointer -g ";
   1119 }
   1120 #
   1121 # Platform fix-ups
   1122 #
   1123 
   1124 # This saves the build files from having to check
   1125 if ($disabled{pic})
   1126 	{
   1127 	$target{shared_cflag} = $target{shared_ldflag} =
   1128 		$target{shared_rcflag} = "";
   1129 	}
   1130 else
   1131 	{
   1132 	push @{$config{defines}}, "OPENSSL_PIC";
   1133 	}
   1134 
   1135 if ($target{sys_id} ne "")
   1136 	{
   1137 	push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
   1138 	}
   1139 
   1140 unless ($disabled{asm}) {
   1141     $target{cpuid_asm_src}=$table{DEFAULTS}->{cpuid_asm_src} if ($config{processor} eq "386");
   1142     $target{bn_asm_src} =~ s/\w+-gf2m.c// if (defined($disabled{ec2m}));
   1143 
   1144     # bn-586 is the only one implementing bn_*_part_words
   1145     push @{$config{defines}}, "OPENSSL_BN_ASM_PART_WORDS" if ($target{bn_asm_src} =~ /bn-586/);
   1146     push @{$config{defines}}, "OPENSSL_IA32_SSE2" if (!$disabled{sse2} && $target{bn_asm_src} =~ /86/);
   1147 
   1148     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT" if ($target{bn_asm_src} =~ /-mont/);
   1149     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT5" if ($target{bn_asm_src} =~ /-mont5/);
   1150     push @{$config{defines}}, "OPENSSL_BN_ASM_GF2m" if ($target{bn_asm_src} =~ /-gf2m/);
   1151 
   1152     if ($config{fips}) {
   1153 	push @{$config{openssl_other_defines}}, "OPENSSL_FIPS";
   1154     }
   1155 
   1156     if ($target{sha1_asm_src}) {
   1157 	push @{$config{defines}}, "SHA1_ASM"   if ($target{sha1_asm_src} =~ /sx86/ || $target{sha1_asm_src} =~ /sha1/);
   1158 	push @{$config{defines}}, "SHA256_ASM" if ($target{sha1_asm_src} =~ /sha256/);
   1159 	push @{$config{defines}}, "SHA512_ASM" if ($target{sha1_asm_src} =~ /sha512/);
   1160     }
   1161     if ($target{rc4_asm_src} ne $table{DEFAULTS}->{rc4_asm_src}) {
   1162 	push @{$config{defines}}, "RC4_ASM";
   1163     }
   1164     if ($target{md5_asm_src}) {
   1165 	push @{$config{defines}}, "MD5_ASM";
   1166     }
   1167     $target{cast_asm_src}=$table{DEFAULTS}->{cast_asm_src} unless $disabled{pic}; # CAST assembler is not PIC
   1168     if ($target{rmd160_asm_src}) {
   1169 	push @{$config{defines}}, "RMD160_ASM";
   1170     }
   1171     if ($target{aes_asm_src}) {
   1172 	push @{$config{defines}}, "AES_ASM" if ($target{aes_asm_src} =~ m/\baes-/);;
   1173 	# aes-ctr.fake is not a real file, only indication that assembler
   1174 	# module implements AES_ctr32_encrypt...
   1175 	push @{$config{defines}}, "AES_CTR_ASM" if ($target{aes_asm_src} =~ s/\s*aes-ctr\.fake//);
   1176 	# aes-xts.fake indicates presence of AES_xts_[en|de]crypt...
   1177 	push @{$config{defines}}, "AES_XTS_ASM" if ($target{aes_asm_src} =~ s/\s*aes-xts\.fake//);
   1178 	$target{aes_asm_src} =~ s/\s*(vpaes|aesni)-x86\.s//g if ($disabled{sse2});
   1179 	push @{$config{defines}}, "VPAES_ASM" if ($target{aes_asm_src} =~ m/vpaes/);
   1180 	push @{$config{defines}}, "BSAES_ASM" if ($target{aes_asm_src} =~ m/bsaes/);
   1181     }
   1182     if ($target{wp_asm_src} =~ /mmx/) {
   1183         if ($config{processor} eq "386") {
   1184 	    $target{wp_asm_src}=$table{DEFAULTS}->{wp_asm_src};
   1185 	} elsif (!$disabled{"whirlpool"}) {
   1186 	    push @{$config{defines}}, "WHIRLPOOL_ASM";
   1187 	}
   1188     }
   1189     if ($target{modes_asm_src} =~ /ghash-/) {
   1190 	push @{$config{defines}}, "GHASH_ASM";
   1191     }
   1192     if ($target{ec_asm_src} =~ /ecp_nistz256/) {
   1193 	push @{$config{defines}}, "ECP_NISTZ256_ASM";
   1194     }
   1195     if ($target{padlock_asm_src} ne $table{DEFAULTS}->{padlock_asm_src}) {
   1196 	push @{$config{defines}}, "PADLOCK_ASM";
   1197     }
   1198     if ($target{poly1305_asm_src} ne "") {
   1199 	push @{$config{defines}}, "POLY1305_ASM";
   1200     }
   1201 }
   1202 
   1203 my %predefined;
   1204 
   1205 if ($^O ne "VMS") {
   1206     my $cc = "$config{cross_compile_prefix}$target{cc}";
   1207 
   1208     # collect compiler pre-defines from gcc or gcc-alike...
   1209     open(PIPE, "$cc -dM -E -x c /dev/null 2>&1 |");
   1210     while (<PIPE>) {
   1211 	m/^#define\s+(\w+(?:\(\w+\))?)(?:\s+(.+))?/ or last;
   1212 	$predefined{$1} = $2 // "";
   1213     }
   1214     close(PIPE);
   1215 
   1216     if (!$disabled{makedepend}) {
   1217 	# We know that GNU C version 3 and up as well as all clang
   1218 	# versions support dependency generation
   1219 	if ($predefined{__GNUC__} >= 3) {
   1220 	    $config{makedepprog} = $cc;
   1221 	} else {
   1222 	    $config{makedepprog} = which('makedepend');
   1223 	    $disabled{makedepend} = "unavailable" unless $config{makedepprog};
   1224 	}
   1225     }
   1226 }
   1227 
   1228 
   1229 
   1230 # Deal with bn_ops ###################################################
   1231 
   1232 $config{bn_ll}			=0;
   1233 $config{export_var_as_fn}	=0;
   1234 my $def_int="unsigned int";
   1235 $config{rc4_int}		=$def_int;
   1236 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
   1237 
   1238 my $count = 0;
   1239 foreach (sort split(/\s+/,$target{bn_ops})) {
   1240     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
   1241     $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
   1242     $config{bn_ll}=1				if $_ eq 'BN_LLONG';
   1243     $config{rc4_int}="unsigned char"		if $_ eq 'RC4_CHAR';
   1244     ($config{b64l},$config{b64},$config{b32})
   1245 	=(0,1,0)				if $_ eq 'SIXTY_FOUR_BIT';
   1246     ($config{b64l},$config{b64},$config{b32})
   1247 	=(1,0,0)				if $_ eq 'SIXTY_FOUR_BIT_LONG';
   1248     ($config{b64l},$config{b64},$config{b32})
   1249 	=(0,0,1)				if $_ eq 'THIRTY_TWO_BIT';
   1250 }
   1251 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
   1252     if $count > 1;
   1253 
   1254 
   1255 # Hack cflags for better warnings (dev option) #######################
   1256 
   1257 # "Stringify" the C flags string.  This permits it to be made part of a string
   1258 # and works as well on command lines.
   1259 $config{cflags} =~ s/([\\\"])/\\$1/g;
   1260 
   1261 if (defined($config{api})) {
   1262     $config{openssl_api_defines} = [ "OPENSSL_MIN_API=".$apitable->{$config{api}} ];
   1263     my $apiflag = sprintf("OPENSSL_API_COMPAT=%s", $apitable->{$config{api}});
   1264     push @{$config{defines}}, $apiflag;
   1265 }
   1266 
   1267 if ($strict_warnings)
   1268 	{
   1269 	my $wopt;
   1270 	die "ERROR --strict-warnings requires gcc or gcc-alike"
   1271             unless defined($predefined{__GNUC__});
   1272 	foreach $wopt (split /\s+/, $gcc_devteam_warn)
   1273 		{
   1274 		$config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
   1275 		}
   1276 	if (defined($predefined{__clang__}))
   1277 		{
   1278 		foreach $wopt (split /\s+/, $clang_devteam_warn)
   1279 			{
   1280 			$config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
   1281 			}
   1282 		}
   1283 	}
   1284 
   1285 unless ($disabled{"crypto-mdebug-backtrace"})
   1286 	{
   1287 	foreach my $wopt (split /\s+/, $memleak_devteam_backtrace)
   1288 		{
   1289 		$config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
   1290 		}
   1291 	if ($target =~ /^BSD-/)
   1292 		{
   1293 		$config{ex_libs} .= " -lexecinfo";
   1294 		}
   1295 	}
   1296 
   1297 if ($user_cflags ne "") { $config{cflags}="$config{cflags}$user_cflags"; }
   1298 else                    { $no_user_cflags=1;  }
   1299 if (@user_defines) { $config{defines}=[ @{$config{defines}}, @user_defines ]; }
   1300 else               { $no_user_defines=1;    }
   1301 
   1302 # ALL MODIFICATIONS TO %config and %target MUST BE DONE FROM HERE ON
   1303 
   1304 unless ($disabled{afalgeng}) {
   1305     $config{afalgeng}="";
   1306     if ($target =~ m/^linux/) {
   1307         my $minver = 4*10000 + 1*100 + 0;
   1308         if ($config{cross_compile_prefix} eq "") {
   1309             my $verstr = `uname -r`;
   1310             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
   1311             ($mi2) = $mi2 =~ /(\d+)/;
   1312             my $ver = $ma*10000 + $mi1*100 + $mi2;
   1313             if ($ver < $minver) {
   1314                 $disabled{afalgeng} = "too-old-kernel";
   1315             } else {
   1316                 push @{$config{engdirs}}, "afalg";
   1317             }
   1318         } else {
   1319             $disabled{afalgeng} = "cross-compiling";
   1320         }
   1321     } else {
   1322         $disabled{afalgeng}  = "not-linux";
   1323     }
   1324 }
   1325 
   1326 push @{$config{openssl_other_defines}}, "OPENSSL_NO_AFALGENG" if ($disabled{afalgeng});
   1327 
   1328 # If we use the unified build, collect information from build.info files
   1329 my %unified_info = ();
   1330 
   1331 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
   1332 if ($builder eq "unified") {
   1333     use with_fallback qw(Text::Template);
   1334 
   1335     sub cleandir {
   1336         my $base = shift;
   1337         my $dir = shift;
   1338         my $relativeto = shift || ".";
   1339 
   1340         $dir = catdir($base,$dir) unless isabsolute($dir);
   1341 
   1342         # Make sure the directories we're building in exists
   1343         mkpath($dir);
   1344 
   1345         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
   1346         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
   1347         return $res;
   1348     }
   1349 
   1350     sub cleanfile {
   1351         my $base = shift;
   1352         my $file = shift;
   1353         my $relativeto = shift || ".";
   1354 
   1355         $file = catfile($base,$file) unless isabsolute($file);
   1356 
   1357         my $d = dirname($file);
   1358         my $f = basename($file);
   1359 
   1360         # Make sure the directories we're building in exists
   1361         mkpath($d);
   1362 
   1363         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
   1364         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
   1365         return $res;
   1366     }
   1367 
   1368     # Store the name of the template file we will build the build file from
   1369     # in %config.  This may be useful for the build file itself.
   1370     my @build_file_template_names =
   1371 	( $builder_platform."-".$target{build_file}.".tmpl",
   1372 	  $target{build_file}.".tmpl" );
   1373     my @build_file_templates = ();
   1374 
   1375     # First, look in the user provided directory, if given
   1376     if (defined $ENV{$local_config_envname}) {
   1377 	@build_file_templates =
   1378 	    map {
   1379 		if ($^O eq 'VMS') {
   1380 		    # VMS environment variables are logical names,
   1381 		    # which can be used as is
   1382 		    $local_config_envname . ':' . $_;
   1383 		} else {
   1384 		    catfile($ENV{$local_config_envname}, $_);
   1385 		}
   1386 	    }
   1387 	    @build_file_template_names;
   1388     }
   1389     # Then, look in our standard directory
   1390     push @build_file_templates,
   1391 	( map { cleanfile($srcdir, catfile("Configurations", $_), $blddir) }
   1392 	  @build_file_template_names );
   1393 
   1394     my $build_file_template;
   1395     for $_ (@build_file_templates) {
   1396 	$build_file_template = $_;
   1397         last if -f $build_file_template;
   1398 
   1399         $build_file_template = undef;
   1400     }
   1401     if (!defined $build_file_template) {
   1402 	die "*** Couldn't find any of:\n", join("\n", @build_file_templates), "\n";
   1403     }
   1404     $config{build_file_templates}
   1405       = [ $build_file_template,
   1406           cleanfile($srcdir, catfile("Configurations", "common.tmpl"),
   1407                     $blddir) ];
   1408 
   1409     my @build_infos = ( [ ".", "build.info" ] );
   1410     foreach (@{$config{dirs}}) {
   1411         push @build_infos, [ $_, "build.info" ]
   1412             if (-f catfile($srcdir, $_, "build.info"));
   1413     }
   1414     foreach (@{$config{sdirs}}) {
   1415         push @build_infos, [ catdir("crypto", $_), "build.info" ]
   1416             if (-f catfile($srcdir, "crypto", $_, "build.info"));
   1417     }
   1418     foreach (@{$config{engdirs}}) {
   1419         push @build_infos, [ catdir("engines", $_), "build.info" ]
   1420             if (-f catfile($srcdir, "engines", $_, "build.info"));
   1421     }
   1422 
   1423     $config{build_infos} = [ ];
   1424 
   1425     foreach (@build_infos) {
   1426         my $sourced = catdir($srcdir, $_->[0]);
   1427         my $buildd = catdir($blddir, $_->[0]);
   1428 
   1429         mkpath($buildd);
   1430 
   1431         my $f = $_->[1];
   1432         # The basic things we're trying to build
   1433         my @programs = ();
   1434         my @programs_install = ();
   1435         my @libraries = ();
   1436         my @libraries_install = ();
   1437         my @engines = ();
   1438         my @engines_install = ();
   1439         my @scripts = ();
   1440         my @scripts_install = ();
   1441         my @extra = ();
   1442         my @overrides = ();
   1443         my @intermediates = ();
   1444         my @rawlines = ();
   1445 
   1446         my %ordinals = ();
   1447         my %sources = ();
   1448         my %shared_sources = ();
   1449         my %includes = ();
   1450         my %depends = ();
   1451         my %renames = ();
   1452         my %sharednames = ();
   1453         my %generate = ();
   1454 
   1455         # We want to detect configdata.pm in the source tree, so we
   1456         # don't use it if the build tree is different.
   1457         my $src_configdata = cleanfile($srcdir, "configdata.pm", $blddir);
   1458 
   1459         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
   1460         my $template =
   1461             Text::Template->new(TYPE => 'FILE',
   1462                                 SOURCE => catfile($sourced, $f),
   1463                                 PREPEND => qq{use lib "$FindBin::Bin/util/perl";});
   1464         die "Something went wrong with $sourced/$f: $!\n" unless $template;
   1465         my @text =
   1466             split /^/m,
   1467             $template->fill_in(HASH => { config => \%config,
   1468                                          target => \%target,
   1469                                          disabled => \%disabled,
   1470                                          withargs => \%withargs,
   1471                                          builddir => abs2rel($buildd, $blddir),
   1472                                          sourcedir => abs2rel($sourced, $blddir),
   1473                                          buildtop => abs2rel($blddir, $blddir),
   1474                                          sourcetop => abs2rel($srcdir, $blddir) },
   1475                                DELIMITERS => [ "{-", "-}" ]);
   1476 
   1477         # The top item of this stack has the following values
   1478         # -2 positive already run and we found ELSE (following ELSIF should fail)
   1479         # -1 positive already run (skip until ENDIF)
   1480         # 0 negatives so far (if we're at a condition, check it)
   1481         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
   1482         # 2 positive ELSE (following ELSIF should fail)
   1483         my @skip = ();
   1484         collect_information(
   1485             collect_from_array([ @text ],
   1486                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
   1487                                                 $l1 =~ s/\\$//; $l1.$l2 }),
   1488             # Info we're looking for
   1489             qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
   1490             => sub {
   1491                 if (! @skip || $skip[$#skip] > 0) {
   1492                     push @skip, !! $1;
   1493                 } else {
   1494                     push @skip, -1;
   1495                 }
   1496             },
   1497             qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
   1498             => sub { die "ELSIF out of scope" if ! @skip;
   1499                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
   1500                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
   1501                      $skip[$#skip] = !! $1
   1502                          if $skip[$#skip] == 0; },
   1503             qr/^\s*ELSE\s*$/
   1504             => sub { die "ELSE out of scope" if ! @skip;
   1505                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
   1506                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
   1507             qr/^\s*ENDIF\s*$/
   1508             => sub { die "ENDIF out of scope" if ! @skip;
   1509                      pop @skip; },
   1510             qr/^\s*PROGRAMS(_NO_INST)?\s*=\s*(.*)\s*$/
   1511             => sub {
   1512                 if (!@skip || $skip[$#skip] > 0) {
   1513                     my $install = $1;
   1514                     my @x = tokenize($2);
   1515                     push @programs, @x;
   1516                     push @programs_install, @x unless $install;
   1517                 }
   1518             },
   1519             qr/^\s*LIBS(_NO_INST)?\s*=\s*(.*)\s*$/
   1520             => sub {
   1521                 if (!@skip || $skip[$#skip] > 0) {
   1522                     my $install = $1;
   1523                     my @x = tokenize($2);
   1524                     push @libraries, @x;
   1525                     push @libraries_install, @x unless $install;
   1526                 }
   1527             },
   1528             qr/^\s*ENGINES(_NO_INST)?\s*=\s*(.*)\s*$/
   1529             => sub {
   1530                 if (!@skip || $skip[$#skip] > 0) {
   1531                     my $install = $1;
   1532                     my @x = tokenize($2);
   1533                     push @engines, @x;
   1534                     push @engines_install, @x unless $install;
   1535                 }
   1536             },
   1537             qr/^\s*SCRIPTS(_NO_INST)?\s*=\s*(.*)\s*$/
   1538             => sub {
   1539                 if (!@skip || $skip[$#skip] > 0) {
   1540                     my $install = $1;
   1541                     my @x = tokenize($2);
   1542                     push @scripts, @x;
   1543                     push @scripts_install, @x unless $install;
   1544                 }
   1545             },
   1546             qr/^\s*EXTRA\s*=\s*(.*)\s*$/
   1547             => sub { push @extra, tokenize($1)
   1548                          if !@skip || $skip[$#skip] > 0 },
   1549             qr/^\s*OVERRIDES\s*=\s*(.*)\s*$/
   1550             => sub { push @overrides, tokenize($1)
   1551                          if !@skip || $skip[$#skip] > 0 },
   1552 
   1553             qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
   1554             => sub { push @{$ordinals{$1}}, tokenize($2)
   1555                          if !@skip || $skip[$#skip] > 0 },
   1556             qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1557             => sub { push @{$sources{$1}}, tokenize($2)
   1558                          if !@skip || $skip[$#skip] > 0 },
   1559             qr/^\s*SHARED_SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1560             => sub { push @{$shared_sources{$1}}, tokenize($2)
   1561                          if !@skip || $skip[$#skip] > 0 },
   1562             qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1563             => sub { push @{$includes{$1}}, tokenize($2)
   1564                          if !@skip || $skip[$#skip] > 0 },
   1565             qr/^\s*DEPEND\[((?:\\.|[^\\\]])*)\]\s*=\s*(.*)\s*$/
   1566             => sub { push @{$depends{$1}}, tokenize($2)
   1567                          if !@skip || $skip[$#skip] > 0 },
   1568             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1569             => sub { push @{$generate{$1}}, $2
   1570                          if !@skip || $skip[$#skip] > 0 },
   1571             qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1572             => sub { push @{$renames{$1}}, tokenize($2)
   1573                          if !@skip || $skip[$#skip] > 0 },
   1574             qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
   1575             => sub { push @{$sharednames{$1}}, tokenize($2)
   1576                          if !@skip || $skip[$#skip] > 0 },
   1577             qr/^\s*BEGINRAW\[((?:\\.|[^\\\]])+)\]\s*$/
   1578             => sub {
   1579                 my $lineiterator = shift;
   1580                 my $target_kind = $1;
   1581                 while (defined $lineiterator->()) {
   1582                     s|\R$||;
   1583                     if (/^\s*ENDRAW\[((?:\\.|[^\\\]])+)\]\s*$/) {
   1584                         die "ENDRAW doesn't match BEGINRAW"
   1585                             if $1 ne $target_kind;
   1586                         last;
   1587                     }
   1588                     next if @skip && $skip[$#skip] <= 0;
   1589                     push @rawlines,  $_
   1590                         if ($target_kind eq $target{build_file}
   1591                             || $target_kind eq $target{build_file}."(".$builder_platform.")");
   1592                 }
   1593             },
   1594             qr/^(?:#.*|\s*)$/ => sub { },
   1595             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
   1596             "BEFORE" => sub {
   1597                 if ($buildinfo_debug) {
   1598                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
   1599                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
   1600                 }
   1601             },
   1602             "AFTER" => sub {
   1603                 if ($buildinfo_debug) {
   1604                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
   1605                 }
   1606             },
   1607             );
   1608         die "runaway IF?" if (@skip);
   1609 
   1610         foreach (keys %renames) {
   1611             die "$_ renamed to more than one thing: "
   1612                 ,join(" ", @{$renames{$_}}),"\n"
   1613                 if scalar @{$renames{$_}} > 1;
   1614             my $dest = cleanfile($buildd, $_, $blddir);
   1615             my $to = cleanfile($buildd, $renames{$_}->[0], $blddir);
   1616             die "$dest renamed to more than one thing: "
   1617                 ,$unified_info{rename}->{$dest}, $to
   1618                 unless !defined($unified_info{rename}->{$dest})
   1619                 or $unified_info{rename}->{$dest} eq $to;
   1620             $unified_info{rename}->{$dest} = $to;
   1621         }
   1622 
   1623         foreach (@programs) {
   1624             my $program = cleanfile($buildd, $_, $blddir);
   1625             if ($unified_info{rename}->{$program}) {
   1626                 $program = $unified_info{rename}->{$program};
   1627             }
   1628             $unified_info{programs}->{$program} = 1;
   1629         }
   1630 
   1631         foreach (@programs_install) {
   1632             my $program = cleanfile($buildd, $_, $blddir);
   1633             if ($unified_info{rename}->{$program}) {
   1634                 $program = $unified_info{rename}->{$program};
   1635             }
   1636             $unified_info{install}->{programs}->{$program} = 1;
   1637         }
   1638 
   1639         foreach (@libraries) {
   1640             my $library = cleanfile($buildd, $_, $blddir);
   1641             if ($unified_info{rename}->{$library}) {
   1642                 $library = $unified_info{rename}->{$library};
   1643             }
   1644             $unified_info{libraries}->{$library} = 1;
   1645         }
   1646 
   1647         foreach (@libraries_install) {
   1648             my $library = cleanfile($buildd, $_, $blddir);
   1649             if ($unified_info{rename}->{$library}) {
   1650                 $library = $unified_info{rename}->{$library};
   1651             }
   1652             $unified_info{install}->{libraries}->{$library} = 1;
   1653         }
   1654 
   1655         die <<"EOF" if scalar @engines and !$config{dynamic_engines};
   1656 ENGINES can only be used if configured with 'dynamic-engine'.
   1657 This is usually a fault in a build.info file.
   1658 EOF
   1659         foreach (@engines) {
   1660             my $library = cleanfile($buildd, $_, $blddir);
   1661             if ($unified_info{rename}->{$library}) {
   1662                 $library = $unified_info{rename}->{$library};
   1663             }
   1664             $unified_info{engines}->{$library} = 1;
   1665         }
   1666 
   1667         foreach (@engines_install) {
   1668             my $library = cleanfile($buildd, $_, $blddir);
   1669             if ($unified_info{rename}->{$library}) {
   1670                 $library = $unified_info{rename}->{$library};
   1671             }
   1672             $unified_info{install}->{engines}->{$library} = 1;
   1673         }
   1674 
   1675         foreach (@scripts) {
   1676             my $script = cleanfile($buildd, $_, $blddir);
   1677             if ($unified_info{rename}->{$script}) {
   1678                 $script = $unified_info{rename}->{$script};
   1679             }
   1680             $unified_info{scripts}->{$script} = 1;
   1681         }
   1682 
   1683         foreach (@scripts_install) {
   1684             my $script = cleanfile($buildd, $_, $blddir);
   1685             if ($unified_info{rename}->{$script}) {
   1686                 $script = $unified_info{rename}->{$script};
   1687             }
   1688             $unified_info{install}->{scripts}->{$script} = 1;
   1689         }
   1690 
   1691         foreach (@extra) {
   1692             my $extra = cleanfile($buildd, $_, $blddir);
   1693             $unified_info{extra}->{$extra} = 1;
   1694         }
   1695 
   1696         foreach (@overrides) {
   1697             my $override = cleanfile($buildd, $_, $blddir);
   1698             $unified_info{overrides}->{$override} = 1;
   1699         }
   1700 
   1701         push @{$unified_info{rawlines}}, @rawlines;
   1702 
   1703         unless ($disabled{shared}) {
   1704             # Check sharednames.
   1705             foreach (keys %sharednames) {
   1706                 my $dest = cleanfile($buildd, $_, $blddir);
   1707                 if ($unified_info{rename}->{$dest}) {
   1708                     $dest = $unified_info{rename}->{$dest};
   1709                 }
   1710                 die "shared_name for $dest with multiple values: "
   1711                     ,join(" ", @{$sharednames{$_}}),"\n"
   1712                     if scalar @{$sharednames{$_}} > 1;
   1713                 my $to = cleanfile($buildd, $sharednames{$_}->[0], $blddir);
   1714                 die "shared_name found for a library $dest that isn't defined\n"
   1715                     unless $unified_info{libraries}->{$dest};
   1716                 die "shared_name for $dest with multiple values: "
   1717                     ,$unified_info{sharednames}->{$dest}, ", ", $to
   1718                     unless !defined($unified_info{sharednames}->{$dest})
   1719                     or $unified_info{sharednames}->{$dest} eq $to;
   1720                 $unified_info{sharednames}->{$dest} = $to;
   1721             }
   1722 
   1723             # Additionally, we set up sharednames for libraries that don't
   1724             # have any, as themselves.
   1725             foreach (keys %{$unified_info{libraries}}) {
   1726                 if (!defined $unified_info{sharednames}->{$_}) {
   1727                     $unified_info{sharednames}->{$_} = $_
   1728                 }
   1729             }
   1730         }
   1731 
   1732         foreach (keys %ordinals) {
   1733             my $dest = $_;
   1734             my $ddest = cleanfile($buildd, $_, $blddir);
   1735             if ($unified_info{rename}->{$ddest}) {
   1736                 $ddest = $unified_info{rename}->{$ddest};
   1737             }
   1738             foreach (@{$ordinals{$dest}}) {
   1739                 my %known_ordinals =
   1740                     (
   1741                      crypto =>
   1742                      cleanfile($sourced, catfile("util", "libcrypto.num"), $blddir),
   1743                      ssl =>
   1744                      cleanfile($sourced, catfile("util", "libssl.num"), $blddir)
   1745                     );
   1746                 my $o = $known_ordinals{$_};
   1747                 die "Ordinals for $ddest defined more than once\n"
   1748                     if $unified_info{ordinals}->{$ddest};
   1749                 $unified_info{ordinals}->{$ddest} = [ $_, $o ];
   1750             }
   1751         }
   1752 
   1753         foreach (keys %sources) {
   1754             my $dest = $_;
   1755             my $ddest = cleanfile($buildd, $_, $blddir);
   1756             if ($unified_info{rename}->{$ddest}) {
   1757                 $ddest = $unified_info{rename}->{$ddest};
   1758             }
   1759             foreach (@{$sources{$dest}}) {
   1760                 my $s = cleanfile($sourced, $_, $blddir);
   1761 
   1762                 # If it isn't in the source tree, we assume it's generated
   1763                 # in the build tree
   1764                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
   1765                     $s = cleanfile($buildd, $_, $blddir);
   1766                 }
   1767                 # We recognise C and asm files
   1768                 if ($s =~ /\.[csS]\b$/) {
   1769                     (my $o = $_) =~ s/\.[csS]\b$/.o/;
   1770                     $o = cleanfile($buildd, $o, $blddir);
   1771                     $unified_info{sources}->{$ddest}->{$o} = 1;
   1772                     $unified_info{sources}->{$o}->{$s} = 1;
   1773                 } else {
   1774                     $unified_info{sources}->{$ddest}->{$s} = 1;
   1775                 }
   1776             }
   1777         }
   1778 
   1779         foreach (keys %shared_sources) {
   1780             my $dest = $_;
   1781             my $ddest = cleanfile($buildd, $_, $blddir);
   1782             if ($unified_info{rename}->{$ddest}) {
   1783                 $ddest = $unified_info{rename}->{$ddest};
   1784             }
   1785             foreach (@{$shared_sources{$dest}}) {
   1786                 my $s = cleanfile($sourced, $_, $blddir);
   1787 
   1788                 # If it isn't in the source tree, we assume it's generated
   1789                 # in the build tree
   1790                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
   1791                     $s = cleanfile($buildd, $_, $blddir);
   1792                 }
   1793                 # We recognise C and asm files
   1794                 if ($s =~ /\.[csS]\b$/) {
   1795                     (my $o = $_) =~ s/\.[csS]\b$/.o/;
   1796                     $o = cleanfile($buildd, $o, $blddir);
   1797                     $unified_info{shared_sources}->{$ddest}->{$o} = 1;
   1798                     $unified_info{sources}->{$o}->{$s} = 1;
   1799                 } else {
   1800                     die "unrecognised source file type for shared library: $s\n";
   1801                 }
   1802             }
   1803         }
   1804 
   1805         foreach (keys %generate) {
   1806             my $dest = $_;
   1807             my $ddest = cleanfile($buildd, $_, $blddir);
   1808             if ($unified_info{rename}->{$ddest}) {
   1809                 $ddest = $unified_info{rename}->{$ddest};
   1810             }
   1811             die "more than one generator for $dest: "
   1812                     ,join(" ", @{$generate{$_}}),"\n"
   1813                     if scalar @{$generate{$_}} > 1;
   1814             my @generator = split /\s+/, $generate{$dest}->[0];
   1815             $generator[0] = cleanfile($sourced, $generator[0], $blddir),
   1816             $unified_info{generate}->{$ddest} = [ @generator ];
   1817         }
   1818 
   1819         foreach (keys %depends) {
   1820             my $dest = $_;
   1821             my $ddest = $dest eq "" ? "" : cleanfile($sourced, $_, $blddir);
   1822 
   1823             # If the destination doesn't exist in source, it can only be
   1824             # a generated file in the build tree.
   1825             if ($ddest ne "" && ($ddest eq $src_configdata || ! -f $ddest)) {
   1826                 $ddest = cleanfile($buildd, $_, $blddir);
   1827                 if ($unified_info{rename}->{$ddest}) {
   1828                     $ddest = $unified_info{rename}->{$ddest};
   1829                 }
   1830             }
   1831             foreach (@{$depends{$dest}}) {
   1832                 my $d = cleanfile($sourced, $_, $blddir);
   1833 
   1834                 # If we know it's generated, or assume it is because we can't
   1835                 # find it in the source tree, we set file we depend on to be
   1836                 # in the build tree rather than the source tree, and assume
   1837                 # and that there are lines to build it in a BEGINRAW..ENDRAW
   1838                 # section or in the Makefile template.
   1839                 if ($d eq $src_configdata
   1840                     || ! -f $d
   1841                     || (grep { $d eq $_ }
   1842                         map { cleanfile($srcdir, $_, $blddir) }
   1843                         grep { /\.h$/ } keys %{$unified_info{generate}})) {
   1844                     $d = cleanfile($buildd, $_, $blddir);
   1845                 }
   1846                 # Take note if the file to depend on is being renamed
   1847                 if ($unified_info{rename}->{$d}) {
   1848                     $d = $unified_info{rename}->{$d};
   1849                 }
   1850                 $unified_info{depends}->{$ddest}->{$d} = 1;
   1851             }
   1852         }
   1853 
   1854         foreach (keys %includes) {
   1855             my $dest = $_;
   1856             my $ddest = cleanfile($sourced, $_, $blddir);
   1857 
   1858             # If the destination doesn't exist in source, it can only be
   1859             # a generated file in the build tree.
   1860             if ($ddest eq $src_configdata || ! -f $ddest) {
   1861                 $ddest = cleanfile($buildd, $_, $blddir);
   1862                 if ($unified_info{rename}->{$ddest}) {
   1863                     $ddest = $unified_info{rename}->{$ddest};
   1864                 }
   1865             }
   1866             foreach (@{$includes{$dest}}) {
   1867                 my $is = cleandir($sourced, $_, $blddir);
   1868                 my $ib = cleandir($buildd, $_, $blddir);
   1869                 push @{$unified_info{includes}->{$ddest}->{source}}, $is
   1870                     unless grep { $_ eq $is } @{$unified_info{includes}->{$ddest}->{source}};
   1871                 push @{$unified_info{includes}->{$ddest}->{build}}, $ib
   1872                     unless grep { $_ eq $ib } @{$unified_info{includes}->{$ddest}->{build}};
   1873             }
   1874         }
   1875     }
   1876 
   1877     # Massage the result
   1878 
   1879     # If we depend on a header file or a perl module, add an inclusion of
   1880     # its directory to allow smoothe inclusion
   1881     foreach my $dest (keys %{$unified_info{depends}}) {
   1882         next if $dest eq "";
   1883         foreach my $d (keys %{$unified_info{depends}->{$dest}}) {
   1884             next unless $d =~ /\.(h|pm)$/;
   1885             my $i = dirname($d);
   1886             my $spot =
   1887                 $d eq "configdata.pm" || defined($unified_info{generate}->{$d})
   1888                 ? 'build' : 'source';
   1889             push @{$unified_info{includes}->{$dest}->{$spot}}, $i
   1890                 unless grep { $_ eq $i } @{$unified_info{includes}->{$dest}->{$spot}};
   1891         }
   1892     }
   1893 
   1894     # Trickle down includes placed on libraries, engines and programs to
   1895     # their sources (i.e. object files)
   1896     foreach my $dest (keys %{$unified_info{engines}},
   1897                       keys %{$unified_info{libraries}},
   1898                       keys %{$unified_info{programs}}) {
   1899         foreach my $k (("source", "build")) {
   1900             next unless defined($unified_info{includes}->{$dest}->{$k});
   1901             my @incs = reverse @{$unified_info{includes}->{$dest}->{$k}};
   1902             foreach my $obj (grep /\.o$/,
   1903                              (keys %{$unified_info{sources}->{$dest}},
   1904                               keys %{$unified_info{shared_sources}->{$dest}})) {
   1905                 foreach my $inc (@incs) {
   1906                     unshift @{$unified_info{includes}->{$obj}->{$k}}, $inc
   1907                         unless grep { $_ eq $inc } @{$unified_info{includes}->{$obj}->{$k}};
   1908                 }
   1909             }
   1910         }
   1911         delete $unified_info{includes}->{$dest};
   1912     }
   1913 
   1914     ### Make unified_info a bit more efficient
   1915     # One level structures
   1916     foreach (("programs", "libraries", "engines", "scripts", "extra", "overrides")) {
   1917         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
   1918     }
   1919     # Two level structures
   1920     foreach my $l1 (("install", "sources", "shared_sources", "ldadd", "depends")) {
   1921         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
   1922             $unified_info{$l1}->{$l2} =
   1923                 [ sort keys %{$unified_info{$l1}->{$l2}} ];
   1924         }
   1925     }
   1926     # Includes
   1927     foreach my $dest (sort keys %{$unified_info{includes}}) {
   1928         if (defined($unified_info{includes}->{$dest}->{build})) {
   1929             my @source_includes = ();
   1930             @source_includes = ( @{$unified_info{includes}->{$dest}->{source}} )
   1931                 if defined($unified_info{includes}->{$dest}->{source});
   1932             $unified_info{includes}->{$dest} =
   1933                 [ @{$unified_info{includes}->{$dest}->{build}} ];
   1934             foreach my $inc (@source_includes) {
   1935                 push @{$unified_info{includes}->{$dest}}, $inc
   1936                     unless grep { $_ eq $inc } @{$unified_info{includes}->{$dest}};
   1937             }
   1938         } else {
   1939             $unified_info{includes}->{$dest} =
   1940                 [ @{$unified_info{includes}->{$dest}->{source}} ];
   1941         }
   1942     }
   1943 }
   1944 
   1945 # For the schemes that need it, we provide the old *_obj configs
   1946 # from the *_asm_obj ones
   1947 foreach (grep /_(asm|aux)_src$/, keys %target) {
   1948     my $src = $_;
   1949     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
   1950     ($target{$obj} = $target{$src}) =~ s/\.[csS]\b/.o/g;
   1951 }
   1952 
   1953 # Write down our configuration where it fits #########################
   1954 
   1955 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
   1956 print OUT <<"EOF";
   1957 package configdata;
   1958 
   1959 use strict;
   1960 use warnings;
   1961 
   1962 use Exporter;
   1963 #use vars qw(\@ISA \@EXPORT);
   1964 our \@ISA = qw(Exporter);
   1965 our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables);
   1966 
   1967 EOF
   1968 print OUT "our %config = (\n";
   1969 foreach (sort keys %config) {
   1970     if (ref($config{$_}) eq "ARRAY") {
   1971 	print OUT "  ", $_, " => [ ", join(", ",
   1972 					   map { quotify("perl", $_) }
   1973 					   @{$config{$_}}), " ],\n";
   1974     } else {
   1975 	print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
   1976     }
   1977 }
   1978 print OUT <<"EOF";
   1979 );
   1980 
   1981 EOF
   1982 print OUT "our %target = (\n";
   1983 foreach (sort keys %target) {
   1984     if (ref($target{$_}) eq "ARRAY") {
   1985 	print OUT "  ", $_, " => [ ", join(", ",
   1986 					   map { quotify("perl", $_) }
   1987 					   @{$target{$_}}), " ],\n";
   1988     } else {
   1989 	print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
   1990     }
   1991 }
   1992 print OUT <<"EOF";
   1993 );
   1994 
   1995 EOF
   1996 print OUT "our \%available_protocols = (\n";
   1997 print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
   1998 print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
   1999 print OUT <<"EOF";
   2000 );
   2001 
   2002 EOF
   2003 print OUT "our \@disablables = (\n";
   2004 foreach (@disablables) {
   2005     print OUT "  ", quotify("perl", $_), ",\n";
   2006 }
   2007 print OUT <<"EOF";
   2008 );
   2009 
   2010 EOF
   2011 print OUT "our \%disabled = (\n";
   2012 foreach (sort keys %disabled) {
   2013     print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
   2014 }
   2015 print OUT <<"EOF";
   2016 );
   2017 
   2018 EOF
   2019 print OUT "our %withargs = (\n";
   2020 foreach (sort keys %withargs) {
   2021     if (ref($withargs{$_}) eq "ARRAY") {
   2022 	print OUT "  ", $_, " => [ ", join(", ",
   2023 					   map { quotify("perl", $_) }
   2024 					   @{$withargs{$_}}), " ],\n";
   2025     } else {
   2026 	print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
   2027     }
   2028 }
   2029 print OUT <<"EOF";
   2030 );
   2031 
   2032 EOF
   2033 if ($builder eq "unified") {
   2034     my $recurse;
   2035     $recurse = sub {
   2036         my $indent = shift;
   2037         foreach (@_) {
   2038             if (ref $_ eq "ARRAY") {
   2039                 print OUT " "x$indent, "[\n";
   2040                 foreach (@$_) {
   2041                     $recurse->($indent + 4, $_);
   2042                 }
   2043                 print OUT " "x$indent, "],\n";
   2044             } elsif (ref $_ eq "HASH") {
   2045                 my %h = %$_;
   2046                 print OUT " "x$indent, "{\n";
   2047                 foreach (sort keys %h) {
   2048                     if (ref $h{$_} eq "") {
   2049                         print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
   2050                     } else {
   2051                         print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
   2052                         $recurse->($indent + 8, $h{$_});
   2053                     }
   2054                 }
   2055                 print OUT " "x$indent, "},\n";
   2056             } else {
   2057                 print OUT " "x$indent, quotify("perl", $_), ",\n";
   2058             }
   2059         }
   2060     };
   2061     print OUT "our %unified_info = (\n";
   2062     foreach (sort keys %unified_info) {
   2063         if (ref $unified_info{$_} eq "") {
   2064             print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
   2065         } else {
   2066             print OUT " "x4, quotify("perl", $_), " =>\n";
   2067             $recurse->(8, $unified_info{$_});
   2068         }
   2069     }
   2070     print OUT <<"EOF";
   2071 );
   2072 
   2073 EOF
   2074 }
   2075 print OUT "1;\n";
   2076 close(OUT);
   2077 
   2078 
   2079 print "CC            =$config{cross_compile_prefix}$target{cc}\n";
   2080 print "CFLAG         =$target{cflags} $config{cflags}\n";
   2081 print "SHARED_CFLAG  =$target{shared_cflag}\n";
   2082 print "DEFINES       =",join(" ", @{$target{defines}}, @{$config{defines}}),"\n";
   2083 print "LFLAG         =$target{lflags}\n";
   2084 print "PLIB_LFLAG    =$target{plib_lflags}\n";
   2085 print "EX_LIBS       =$target{ex_libs} $config{ex_libs}\n";
   2086 print "APPS_OBJ      =$target{apps_obj}\n";
   2087 print "CPUID_OBJ     =$target{cpuid_obj}\n";
   2088 print "UPLINK_OBJ    =$target{uplink_obj}\n";
   2089 print "BN_ASM        =$target{bn_obj}\n";
   2090 print "EC_ASM        =$target{ec_obj}\n";
   2091 print "DES_ENC       =$target{des_obj}\n";
   2092 print "AES_ENC       =$target{aes_obj}\n";
   2093 print "BF_ENC        =$target{bf_obj}\n";
   2094 print "CAST_ENC      =$target{cast_obj}\n";
   2095 print "RC4_ENC       =$target{rc4_obj}\n";
   2096 print "RC5_ENC       =$target{rc5_obj}\n";
   2097 print "MD5_OBJ_ASM   =$target{md5_obj}\n";
   2098 print "SHA1_OBJ_ASM  =$target{sha1_obj}\n";
   2099 print "RMD160_OBJ_ASM=$target{rmd160_obj}\n";
   2100 print "CMLL_ENC      =$target{cmll_obj}\n";
   2101 print "MODES_OBJ     =$target{modes_obj}\n";
   2102 print "PADLOCK_OBJ   =$target{padlock_obj}\n";
   2103 print "CHACHA_ENC    =$target{chacha_obj}\n";
   2104 print "POLY1305_OBJ  =$target{poly1305_obj}\n";
   2105 print "BLAKE2_OBJ    =$target{blake2_obj}\n";
   2106 print "PROCESSOR     =$config{processor}\n";
   2107 print "RANLIB        =", $target{ranlib} eq '$(CROSS_COMPILE)ranlib' ?
   2108                              "$config{cross_compile_prefix}ranlib" :
   2109                              "$target{ranlib}", "\n";
   2110 print "ARFLAGS       =$target{arflags}\n";
   2111 print "PERL          =$config{perl}\n";
   2112 print "\n";
   2113 print "SIXTY_FOUR_BIT_LONG mode\n" if $config{b64l};
   2114 print "SIXTY_FOUR_BIT mode\n" if $config{b64};
   2115 print "THIRTY_TWO_BIT mode\n" if $config{b32};
   2116 print "BN_LLONG mode\n" if $config{bn_ll};
   2117 print "RC4 uses $config{rc4_int}\n" if $config{rc4_int} ne $def_int;
   2118 
   2119 my %builders = (
   2120     unified => sub {
   2121         run_dofile(catfile($blddir, $target{build_file}),
   2122                    @{$config{build_file_templates}});
   2123     },
   2124     );
   2125 
   2126 $builders{$builder}->($builder_platform, @builder_opts);
   2127 
   2128 print <<"EOF";
   2129 
   2130 Configured for $target.
   2131 EOF
   2132 
   2133 print <<"EOF" if ($disabled{threads} eq "unavailable");
   2134 
   2135 The library could not be configured for supporting multi-threaded
   2136 applications as the compiler options required on this system are not known.
   2137 See file INSTALL for details if you need multi-threading.
   2138 EOF
   2139 
   2140 print <<"EOF" if ($no_shared_warn);
   2141 
   2142 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
   2143 platform, so we will pretend you gave the option 'no-pic', which also disables
   2144 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
   2145 or position independent code, please let us know (but please first make sure
   2146 you have tried with a current version of OpenSSL).
   2147 EOF
   2148 
   2149 exit(0);
   2150 
   2151 ######################################################################
   2152 #
   2153 # Helpers and utility functions
   2154 #
   2155 
   2156 # Configuration file reading #########################################
   2157 
   2158 # Note: All of the helper functions are for lazy evaluation.  They all
   2159 # return a CODE ref, which will return the intended value when evaluated.
   2160 # Thus, whenever there's mention of a returned value, it's about that
   2161 # intended value.
   2162 
   2163 # Helper function to implement conditional inheritance depending on the
   2164 # value of $disabled{asm}.  Used in inherit_from values as follows:
   2165 #
   2166 #      inherit_from => [ "template", asm("asm_tmpl") ]
   2167 #
   2168 sub asm {
   2169     my @x = @_;
   2170     sub {
   2171 	$disabled{asm} ? () : @x;
   2172     }
   2173 }
   2174 
   2175 # Helper function to implement conditional value variants, with a default
   2176 # plus additional values based on the value of $config{build_type}.
   2177 # Arguments are given in hash table form:
   2178 #
   2179 #       picker(default => "Basic string: ",
   2180 #              debug   => "debug",
   2181 #              release => "release")
   2182 #
   2183 # When configuring with --debug, the resulting string will be
   2184 # "Basic string: debug", and when not, it will be "Basic string: release"
   2185 #
   2186 # This can be used to create variants of sets of flags according to the
   2187 # build type:
   2188 #
   2189 #       cflags => picker(default => "-Wall",
   2190 #                        debug   => "-g -O0",
   2191 #                        release => "-O3")
   2192 #
   2193 sub picker {
   2194     my %opts = @_;
   2195     return sub { add($opts{default} || (),
   2196                      $opts{$config{build_type}} || ())->(); }
   2197 }
   2198 
   2199 # Helper function to combine several values of different types into one.
   2200 # This is useful if you want to combine a string with the result of a
   2201 # lazy function, such as:
   2202 #
   2203 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
   2204 #
   2205 sub combine {
   2206     my @stuff = @_;
   2207     return sub { add(@stuff)->(); }
   2208 }
   2209 
   2210 # Helper function to implement conditional values depending on the value
   2211 # of $disabled{threads}.  Can be used as follows:
   2212 #
   2213 #       cflags => combine("-Wall", threads("-pthread"))
   2214 #
   2215 sub threads {
   2216     my @flags = @_;
   2217     return sub { add($disabled{threads} ? () : @flags)->(); }
   2218 }
   2219 
   2220 
   2221 
   2222 our $add_called = 0;
   2223 # Helper function to implement adding values to already existing configuration
   2224 # values.  It handles elements that are ARRAYs, CODEs and scalars
   2225 sub _add {
   2226     my $separator = shift;
   2227 
   2228     # If there's any ARRAY in the collection of values OR the separator
   2229     # is undef, we will return an ARRAY of combined values, otherwise a
   2230     # string of joined values with $separator as the separator.
   2231     my $found_array = !defined($separator);
   2232 
   2233     my @values =
   2234 	map {
   2235 	    my $res = $_;
   2236 	    while (ref($res) eq "CODE") {
   2237 		$res = $res->();
   2238 	    }
   2239 	    if (defined($res)) {
   2240 		if (ref($res) eq "ARRAY") {
   2241 		    $found_array = 1;
   2242 		    @$res;
   2243 		} else {
   2244 		    $res;
   2245 		}
   2246 	    } else {
   2247 		();
   2248 	    }
   2249     } (@_);
   2250 
   2251     $add_called = 1;
   2252 
   2253     if ($found_array) {
   2254 	[ @values ];
   2255     } else {
   2256 	join($separator, grep { defined($_) && $_ ne "" } @values);
   2257     }
   2258 }
   2259 sub add_before {
   2260     my $separator = " ";
   2261     if (ref($_[$#_]) eq "HASH") {
   2262         my $opts = pop;
   2263         $separator = $opts->{separator};
   2264     }
   2265     my @x = @_;
   2266     sub { _add($separator, @x, @_) };
   2267 }
   2268 sub add {
   2269     my $separator = " ";
   2270     if (ref($_[$#_]) eq "HASH") {
   2271         my $opts = pop;
   2272         $separator = $opts->{separator};
   2273     }
   2274     my @x = @_;
   2275     sub { _add($separator, @_, @x) };
   2276 }
   2277 
   2278 # configuration reader, evaluates the input file as a perl script and expects
   2279 # it to fill %targets with target configurations.  Those are then added to
   2280 # %table.
   2281 sub read_config {
   2282     my $fname = shift;
   2283     open(CONFFILE, "< $fname")
   2284 	or die "Can't open configuration file '$fname'!\n";
   2285     my $x = $/;
   2286     undef $/;
   2287     my $content = <CONFFILE>;
   2288     $/ = $x;
   2289     close(CONFFILE);
   2290     my %targets = ();
   2291     {
   2292 	# Protect certain tables from tampering
   2293 	local %table = %::table;
   2294 
   2295 	eval $content;
   2296 	warn $@ if $@;
   2297     }
   2298     my %preexisting = ();
   2299     foreach (sort keys %targets) {
   2300         $preexisting{$_} = 1 if $table{$_};
   2301     }
   2302     die <<"EOF",
   2303 The following config targets from $fname
   2304 shadow pre-existing config targets with the same name:
   2305 EOF
   2306         map { "  $_\n" } sort keys %preexisting
   2307         if %preexisting;
   2308 
   2309 
   2310     # For each target, check that it's configured with a hash table.
   2311     foreach (keys %targets) {
   2312 	if (ref($targets{$_}) ne "HASH") {
   2313 	    if (ref($targets{$_}) eq "") {
   2314 		warn "Deprecated target configuration for $_, ignoring...\n";
   2315 	    } else {
   2316 		warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
   2317 	    }
   2318 	    delete $targets{$_};
   2319 	} else {
   2320             $targets{$_}->{_conf_fname_int} = add([ $fname ]);
   2321         }
   2322     }
   2323 
   2324     %table = (%table, %targets);
   2325 
   2326 }
   2327 
   2328 # configuration resolver.  Will only resolve all the lazy evaluation
   2329 # codeblocks for the chosen target and all those it inherits from,
   2330 # recursively
   2331 sub resolve_config {
   2332     my $target = shift;
   2333     my @breadcrumbs = @_;
   2334 
   2335 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
   2336 
   2337     if (grep { $_ eq $target } @breadcrumbs) {
   2338 	die "inherit_from loop!  target backtrace:\n  "
   2339 	    ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
   2340     }
   2341 
   2342     if (!defined($table{$target})) {
   2343 	warn "Warning! target $target doesn't exist!\n";
   2344 	return ();
   2345     }
   2346     # Recurse through all inheritances.  They will be resolved on the
   2347     # fly, so when this operation is done, they will all just be a
   2348     # bunch of attributes with string values.
   2349     # What we get here, though, are keys with references to lists of
   2350     # the combined values of them all.  We will deal with lists after
   2351     # this stage is done.
   2352     my %combined_inheritance = ();
   2353     if ($table{$target}->{inherit_from}) {
   2354 	my @inherit_from =
   2355 	    map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
   2356 	foreach (@inherit_from) {
   2357 	    my %inherited_config = resolve_config($_, $target, @breadcrumbs);
   2358 
   2359 	    # 'template' is a marker that's considered private to
   2360 	    # the config that had it.
   2361 	    delete $inherited_config{template};
   2362 
   2363 	    foreach (keys %inherited_config) {
   2364 		if (!$combined_inheritance{$_}) {
   2365 		    $combined_inheritance{$_} = [];
   2366 		}
   2367 		push @{$combined_inheritance{$_}}, $inherited_config{$_};
   2368 	    }
   2369 	}
   2370     }
   2371 
   2372     # We won't need inherit_from in this target any more, since we've
   2373     # resolved all the inheritances that lead to this
   2374     delete $table{$target}->{inherit_from};
   2375 
   2376     # Now is the time to deal with those lists.  Here's the place to
   2377     # decide what shall be done with those lists, all based on the
   2378     # values of the target we're currently dealing with.
   2379     # - If a value is a coderef, it will be executed with the list of
   2380     #   inherited values as arguments.
   2381     # - If the corresponding key doesn't have a value at all or is the
   2382     #   empty string, the inherited value list will be run through the
   2383     #   default combiner (below), and the result becomes this target's
   2384     #   value.
   2385     # - Otherwise, this target's value is assumed to be a string that
   2386     #   will simply override the inherited list of values.
   2387     my $default_combiner = add();
   2388 
   2389     my %all_keys =
   2390 	map { $_ => 1 } (keys %combined_inheritance,
   2391 			 keys %{$table{$target}});
   2392 
   2393     sub process_values {
   2394 	my $object    = shift;
   2395 	my $inherited = shift;  # Always a [ list ]
   2396 	my $target    = shift;
   2397 	my $entry     = shift;
   2398 
   2399         $add_called = 0;
   2400 
   2401         while(ref($object) eq "CODE") {
   2402             $object = $object->(@$inherited);
   2403         }
   2404         if (!defined($object)) {
   2405             return ();
   2406         }
   2407         elsif (ref($object) eq "ARRAY") {
   2408             local $add_called;  # To make sure recursive calls don't affect it
   2409             return [ map { process_values($_, $inherited, $target, $entry) }
   2410                      @$object ];
   2411         } elsif (ref($object) eq "") {
   2412             return $object;
   2413         } else {
   2414             die "cannot handle reference type ",ref($object)
   2415                 ," found in target ",$target," -> ",$entry,"\n";
   2416         }
   2417     }
   2418 
   2419     foreach (sort keys %all_keys) {
   2420         my $previous = $combined_inheritance{$_};
   2421 
   2422 	# Current target doesn't have a value for the current key?
   2423 	# Assign it the default combiner, the rest of this loop body
   2424 	# will handle it just like any other coderef.
   2425 	if (!exists $table{$target}->{$_}) {
   2426 	    $table{$target}->{$_} = $default_combiner;
   2427 	}
   2428 
   2429 	$table{$target}->{$_} = process_values($table{$target}->{$_},
   2430 					       $combined_inheritance{$_},
   2431 					       $target, $_);
   2432         unless(defined($table{$target}->{$_})) {
   2433             delete $table{$target}->{$_};
   2434         }
   2435 #        if ($extra_checks &&
   2436 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
   2437 #            warn "$_ got replaced in $target\n";
   2438 #        }
   2439     }
   2440 
   2441     # Finally done, return the result.
   2442     return %{$table{$target}};
   2443 }
   2444 
   2445 sub usage
   2446 	{
   2447 	print STDERR $usage;
   2448 	print STDERR "\npick os/compiler from:\n";
   2449 	my $j=0;
   2450 	my $i;
   2451         my $k=0;
   2452 	foreach $i (sort keys %table)
   2453 		{
   2454 		next if $table{$i}->{template};
   2455 		next if $i =~ /^debug/;
   2456 		$k += length($i) + 1;
   2457 		if ($k > 78)
   2458 			{
   2459 			print STDERR "\n";
   2460 			$k=length($i);
   2461 			}
   2462 		print STDERR $i . " ";
   2463 		}
   2464 	foreach $i (sort keys %table)
   2465 		{
   2466 		next if $table{$i}->{template};
   2467 		next if $i !~ /^debug/;
   2468 		$k += length($i) + 1;
   2469 		if ($k > 78)
   2470 			{
   2471 			print STDERR "\n";
   2472 			$k=length($i);
   2473 			}
   2474 		print STDERR $i . " ";
   2475 		}
   2476 	print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
   2477 	exit(1);
   2478 	}
   2479 
   2480 sub run_dofile
   2481 {
   2482     my $out = shift;
   2483     my @templates = @_;
   2484 
   2485     unlink $out || warn "Can't remove $out, $!"
   2486         if -f $out;
   2487     foreach (@templates) {
   2488         die "Can't open $_, $!" unless -f $_;
   2489     }
   2490     my $perlcmd = (quotify("maybeshell", $config{perl}))[0];
   2491     my $cmd = "$perlcmd \"-I.\" \"-Mconfigdata\" \"$dofile\" -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
   2492     #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
   2493     system($cmd);
   2494     exit 1 if $? != 0;
   2495     rename("$out.new", $out) || die "Can't rename $out.new, $!";
   2496 }
   2497 
   2498 sub which
   2499 {
   2500     my ($name)=@_;
   2501 
   2502     if (eval { require IPC::Cmd; 1; }) {
   2503         IPC::Cmd->import();
   2504         return scalar IPC::Cmd::can_run($name);
   2505     } else {
   2506         # if there is $directories component in splitpath,
   2507         # then it's not something to test with $PATH...
   2508         return $name if (File::Spec->splitpath($name))[1];
   2509 
   2510         foreach (File::Spec->path()) {
   2511             my $fullpath = catfile($_, "$name$target{exe_extension}");
   2512             if (-f $fullpath and -x $fullpath) {
   2513                 return $fullpath;
   2514             }
   2515         }
   2516     }
   2517 }
   2518 
   2519 # Configuration printer ##############################################
   2520 
   2521 sub print_table_entry
   2522 {
   2523     my $target = shift;
   2524     my %target = resolve_config($target);
   2525     my $type = shift;
   2526 
   2527     # Don't print the templates
   2528     return if $target{template};
   2529 
   2530     my @sequence = (
   2531 	"sys_id",
   2532 	"cc",
   2533 	"cflags",
   2534 	"defines",
   2535 	"unistd",
   2536 	"ld",
   2537 	"lflags",
   2538 	"loutflag",
   2539 	"plib_lflags",
   2540 	"ex_libs",
   2541 	"bn_ops",
   2542 	"apps_aux_src",
   2543 	"cpuid_asm_src",
   2544 	"uplink_aux_src",
   2545 	"bn_asm_src",
   2546 	"ec_asm_src",
   2547 	"des_asm_src",
   2548 	"aes_asm_src",
   2549 	"bf_asm_src",
   2550 	"md5_asm_src",
   2551 	"cast_asm_src",
   2552 	"sha1_asm_src",
   2553 	"rc4_asm_src",
   2554 	"rmd160_asm_src",
   2555 	"rc5_asm_src",
   2556 	"wp_asm_src",
   2557 	"cmll_asm_src",
   2558 	"modes_asm_src",
   2559 	"padlock_asm_src",
   2560 	"chacha_asm_src",
   2561 	"poly1035_asm_src",
   2562 	"thread_scheme",
   2563 	"perlasm_scheme",
   2564 	"dso_scheme",
   2565 	"shared_target",
   2566 	"shared_cflag",
   2567 	"shared_defines",
   2568 	"shared_ldflag",
   2569 	"shared_rcflag",
   2570 	"shared_extension",
   2571 	"dso_extension",
   2572 	"obj_extension",
   2573 	"exe_extension",
   2574 	"ranlib",
   2575 	"ar",
   2576 	"arflags",
   2577 	"aroutflag",
   2578 	"rc",
   2579 	"rcflags",
   2580 	"rcoutflag",
   2581 	"mt",
   2582 	"mtflags",
   2583 	"mtinflag",
   2584 	"mtoutflag",
   2585 	"multilib",
   2586 	"build_scheme",
   2587 	);
   2588 
   2589     if ($type eq "TABLE") {
   2590 	print "\n";
   2591 	print "*** $target\n";
   2592         foreach (@sequence) {
   2593             if (ref($target{$_}) eq "ARRAY") {
   2594                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
   2595             } else {
   2596                 printf "\$%-12s = %s\n", $_, $target{$_};
   2597             }
   2598         }
   2599     } elsif ($type eq "HASH") {
   2600 	my $largest =
   2601 	    length((sort { length($a) <=> length($b) } @sequence)[-1]);
   2602 	print "    '$target' => {\n";
   2603 	foreach (@sequence) {
   2604 	    if ($target{$_}) {
   2605                 if (ref($target{$_}) eq "ARRAY") {
   2606                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
   2607                 } else {
   2608                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
   2609                 }
   2610 	    }
   2611 	}
   2612 	print "    },\n";
   2613     }
   2614 }
   2615 
   2616 # Utility routines ###################################################
   2617 
   2618 # On VMS, if the given file is a logical name, File::Spec::Functions
   2619 # will consider it an absolute path.  There are cases when we want a
   2620 # purely syntactic check without checking the environment.
   2621 sub isabsolute {
   2622     my $file = shift;
   2623 
   2624     # On non-platforms, we just use file_name_is_absolute().
   2625     return file_name_is_absolute($file) unless $^O eq "VMS";
   2626 
   2627     # If the file spec includes a device or a directory spec,
   2628     # file_name_is_absolute() is perfectly safe.
   2629     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
   2630 
   2631     # Here, we know the given file spec isn't absolute
   2632     return 0;
   2633 }
   2634 
   2635 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
   2636 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
   2637 # realpath() requires that at least all path components except the last is an
   2638 # existing directory.  On VMS, the last component of the directory spec must
   2639 # exist.
   2640 sub absolutedir {
   2641     my $dir = shift;
   2642 
   2643     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
   2644     # will return the volume name for the device, no matter what.  Also,
   2645     # it will return an incorrect directory spec if the argument is a
   2646     # directory that doesn't exist.
   2647     if ($^O eq "VMS") {
   2648         return rel2abs($dir);
   2649     }
   2650 
   2651     # We use realpath() on Unix, since no other will properly clean out
   2652     # a directory spec.
   2653     use Cwd qw/realpath/;
   2654 
   2655     return realpath($dir);
   2656 }
   2657 
   2658 sub quotify {
   2659     my %processors = (
   2660 	perl    => sub { my $x = shift;
   2661 			 $x =~ s/([\\\$\@"])/\\$1/g;
   2662 			 return '"'.$x.'"'; },
   2663 	maybeshell => sub { my $x = shift;
   2664 			    (my $y = $x) =~ s/([\\\"])/\\$1/g;
   2665 			    if ($x ne $y || $x =~ m|\s|) {
   2666 				return '"'.$y.'"';
   2667 			    } else {
   2668 				return $x;
   2669 			    }
   2670 			},
   2671 	);
   2672     my $for = shift;
   2673     my $processor =
   2674 	defined($processors{$for}) ? $processors{$for} : sub { shift; };
   2675 
   2676     return map { $processor->($_); } @_;
   2677 }
   2678 
   2679 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
   2680 # $filename is a file name to read from
   2681 # $line_concat_cond_re is a regexp detecting a line continuation ending
   2682 # $line_concat is a CODEref that takes care of concatenating two lines
   2683 sub collect_from_file {
   2684     my $filename = shift;
   2685     my $line_concat_cond_re = shift;
   2686     my $line_concat = shift;
   2687 
   2688     open my $fh, $filename || die "unable to read $filename: $!\n";
   2689     return sub {
   2690         my $saved_line = "";
   2691         $_ = "";
   2692         while (<$fh>) {
   2693             s|\R$||;
   2694             if (defined $line_concat) {
   2695                 $_ = $line_concat->($saved_line, $_);
   2696                 $saved_line = "";
   2697             }
   2698             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
   2699                 $saved_line = $_;
   2700                 next;
   2701             }
   2702             return $_;
   2703         }
   2704         die "$filename ending with continuation line\n" if $_;
   2705         close $fh;
   2706         return undef;
   2707     }
   2708 }
   2709 
   2710 # collect_from_array($array, $line_concat_cond_re, $line_concat)
   2711 # $array is an ARRAYref of lines
   2712 # $line_concat_cond_re is a regexp detecting a line continuation ending
   2713 # $line_concat is a CODEref that takes care of concatenating two lines
   2714 sub collect_from_array {
   2715     my $array = shift;
   2716     my $line_concat_cond_re = shift;
   2717     my $line_concat = shift;
   2718     my @array = (@$array);
   2719 
   2720     return sub {
   2721         my $saved_line = "";
   2722         $_ = "";
   2723         while (defined($_ = shift @array)) {
   2724             s|\R$||;
   2725             if (defined $line_concat) {
   2726                 $_ = $line_concat->($saved_line, $_);
   2727                 $saved_line = "";
   2728             }
   2729             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
   2730                 $saved_line = $_;
   2731                 next;
   2732             }
   2733             return $_;
   2734         }
   2735         die "input text ending with continuation line\n" if $_;
   2736         return undef;
   2737     }
   2738 }
   2739 
   2740 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
   2741 # $lineiterator is a CODEref that delivers one line at a time.
   2742 # All following arguments are regex/CODEref pairs, where the regexp detects a
   2743 # line and the CODEref does something with the result of the regexp.
   2744 sub collect_information {
   2745     my $lineiterator = shift;
   2746     my %collectors = @_;
   2747 
   2748     while(defined($_ = $lineiterator->())) {
   2749         s|\R$||;
   2750         my $found = 0;
   2751         if ($collectors{"BEFORE"}) {
   2752             $collectors{"BEFORE"}->($_);
   2753         }
   2754         foreach my $re (keys %collectors) {
   2755             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
   2756                 $collectors{$re}->($lineiterator);
   2757                 $found = 1;
   2758             };
   2759         }
   2760         if ($collectors{"OTHERWISE"}) {
   2761             $collectors{"OTHERWISE"}->($lineiterator, $_)
   2762                 unless $found || !defined $collectors{"OTHERWISE"};
   2763         }
   2764         if ($collectors{"AFTER"}) {
   2765             $collectors{"AFTER"}->($_);
   2766         }
   2767     }
   2768 }
   2769 
   2770 # tokenize($line)
   2771 # $line is a line of text to split up into tokens
   2772 # returns a list of tokens
   2773 #
   2774 # Tokens are divided by spaces.  If the tokens include spaces, they
   2775 # have to be quoted with single or double quotes.  Double quotes
   2776 # inside a double quoted token must be escaped.  Escaping is done
   2777 # with backslash.
   2778 # Basically, the same quoting rules apply for " and ' as in any
   2779 # Unix shell.
   2780 sub tokenize {
   2781     my $line = my $debug_line = shift;
   2782     my @result = ();
   2783 
   2784     while ($line =~ s|^\s+||, $line ne "") {
   2785         my $token = "";
   2786         while ($line ne "" && $line !~ m|^\s|) {
   2787             if ($line =~ m/^"((?:[^"\\]+|\\.)*)"/) {
   2788                 $token .= $1;
   2789                 $line = $';
   2790             } elsif ($line =~ m/^'([^']*)'/) {
   2791                 $token .= $1;
   2792                 $line = $';
   2793             } elsif ($line =~ m/^(\S+)/) {
   2794                 $token .= $1;
   2795                 $line = $';
   2796             }
   2797         }
   2798         push @result, $token;
   2799     }
   2800 
   2801     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
   2802 	print STDERR "DEBUG[tokenize]: Parsed '$debug_line' into:\n";
   2803 	print STDERR "DEBUG[tokenize]: ('", join("', '", @result), "')\n";
   2804     }
   2805     return @result;
   2806 }
   2807