Configure

   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 Config;
  15 use FindBin;
  16 use lib "$FindBin::Bin/util/perl";
  17 use File::Basename;
  18 use File::Spec::Functions qw/:DEFAULT abs2rel rel2abs/;
  19 use File::Path qw/mkpath/;
  20 use OpenSSL::Glob;
  21
  22 # see INSTALL for instructions.
  23
  24 my $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";
  25
  26 # Options:
  27 #
  28 # --config      add the given configuration file, which will be read after
  29 #               any "Configurations*" files that are found in the same
  30 #               directory as this script.
  31 # --prefix      prefix for the OpenSSL installation, which includes the
  32 #               directories bin, lib, include, share/man, share/doc/openssl
  33 #               This becomes the value of INSTALLTOP in Makefile
  34 #               (Default: /usr/local)
  35 # --openssldir  OpenSSL data area, such as openssl.cnf, certificates and keys.
  36 #               If it's a relative directory, it will be added on the directory
  37 #               given with --prefix.
  38 #               This becomes the value of OPENSSLDIR in Makefile and in C.
  39 #               (Default: PREFIX/ssl)
  40 #
  41 # --cross-compile-prefix Add specified prefix to binutils components.
  42 #
  43 # --api         One of 0.9.8, 1.0.0 or 1.1.0.  Do not compile support for
  44 #               interfaces deprecated as of the specified OpenSSL version.
  45 #
  46 # no-hw-xxx     do not compile support for specific crypto hardware.
  47 #               Generic OpenSSL-style methods relating to this support
  48 #               are always compiled but return NULL if the hardware
  49 #               support isn't compiled.
  50 # no-hw         do not compile support for any crypto hardware.
  51 # [no-]threads  [don't] try to create a library that is suitable for
  52 #               multithreaded applications (default is "threads" if we
  53 #               know how to do it)
  54 # [no-]shared   [don't] try to create shared libraries when supported.
  55 # [no-]pic      [don't] try to build position independent code when supported.
  56 #               If disabled, it also disables shared and dynamic-engine.
  57 # no-asm        do not use assembler
  58 # no-dso        do not compile in any native shared-library methods. This
  59 #               will ensure that all methods just return NULL.
  60 # no-egd        do not compile support for the entropy-gathering daemon APIs
  61 # [no-]zlib     [don't] compile support for zlib compression.
  62 # zlib-dynamic  Like "zlib", but the zlib library is expected to be a shared
  63 #               library and will be loaded in run-time by the OpenSSL library.
  64 # sctp          include SCTP support
  65 # enable-weak-ssl-ciphers
  66 #               Enable weak ciphers that are disabled by default.
  67 # 386           generate 80386 code in assembly modules
  68 # no-sse2       disables IA-32 SSE2 code in assembly modules, the above
  69 #               mentioned '386' option implies this one
  70 # no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
  71 # -<xxx> +<xxx> compiler options are passed through
  72 # -static       while -static is also a pass-through compiler option (and
  73 #               as such is limited to environments where it's actually
  74 #               meaningful), it triggers a number configuration options,
  75 #               namely no-dso, no-pic, no-shared and no-threads. It is
  76 #               argued that the only reason to produce statically linked
  77 #               binaries (and in context it means executables linked with
  78 #               -static flag, and not just executables linked with static
  79 #               libcrypto.a) is to eliminate dependency on specific run-time,
  80 #               a.k.a. libc version. The mentioned config options are meant
  81 #               to achieve just that. Unfortunately on Linux it's impossible
  82 #               to eliminate the dependency completely for openssl executable
  83 #               because of getaddrinfo and gethostbyname calls, which can
  84 #               invoke dynamically loadable library facility anyway to meet
  85 #               the lookup requests. For this reason on Linux statically
  86 #               linked openssl executable has rather debugging value than
  87 #               production quality.
  88 #
  89 # DEBUG_SAFESTACK use type-safe stacks to enforce type-safety on stack items
  90 #               provided to stack calls. Generates unique stack functions for
  91 #               each possible stack type.
  92 # BN_LLONG      use the type 'long long' in crypto/bn/bn.h
  93 # RC4_CHAR      use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
  94 # Following are set automatically by this script
  95 #
  96 # MD5_ASM       use some extra md5 assembler,
  97 # SHA1_ASM      use some extra sha1 assembler, must define L_ENDIAN for x86
  98 # RMD160_ASM    use some extra ripemd160 assembler,
  99 # SHA256_ASM    sha256_block is implemented in assembler
 100 # SHA512_ASM    sha512_block is implemented in assembler
 101 # AES_ASM       AES_[en|de]crypt is implemented in assembler
 102
 103 # Minimum warning options... any contributions to OpenSSL should at least get
 104 # past these.
 105
 106 # DEBUG_UNUSED enables __owur (warn unused result) checks.
 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
 119 my $gcc_devteam_warn = "-DDEBUG_UNUSED"
 120         . " -DPEDANTIC -pedantic -Wno-long-long"
 121         . " -Wall"
 122         . " -Wextra"
 123         . " -Wno-unused-parameter"
 124         . " -Wno-missing-field-initializers"
 125         . " -Wswitch"
 126         . " -Wsign-compare"
 127         . " -Wmissing-prototypes"
 128         . " -Wstrict-prototypes"
 129         . " -Wshadow"
 130         . " -Wformat"
 131         . " -Wtype-limits"
 132         . " -Wundef"
 133         . " -Werror"
 134         ;
 135
 136 # These are used in addition to $gcc_devteam_warn when the compiler is clang.
 137 # TODO(openssl-team): fix problems and investigate if (at least) the
 138 # following warnings can also be enabled:
 139 #       -Wcast-align
 140 #       -Wunreachable-code -- no, too ugly/compiler-specific
 141 #       -Wlanguage-extension-token -- no, we use asm()
 142 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
 143 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
 144 my $clang_devteam_warn = ""
 145         . " -Wswitch-default"
 146         . " -Wno-parentheses-equality"
 147         . " -Wno-language-extension-token"
 148         . " -Wno-extended-offsetof"
 149         . " -Wconditional-uninitialized"
 150         . " -Wincompatible-pointer-types-discards-qualifiers"
 151         . " -Wmissing-variable-declarations"
 152         . " -Wno-unknown-warning-option"
 153         ;
 154
 155 # This adds backtrace information to the memory leak info.  Is only used
 156 # when crypto-mdebug-backtrace is enabled.
 157 my $memleak_devteam_backtrace = "-rdynamic";
 158
 159 my $strict_warnings = 0;
 160
 161 # As for $BSDthreads. Idea is to maintain "collective" set of flags,
 162 # which would cover all BSD flavors. -pthread applies to them all,
 163 # but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
 164 # -lc_r, which is sufficient. FreeBSD 4.x expands it as -lc_r,
 165 # which has to be accompanied by explicit -D_THREAD_SAFE and
 166 # sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
 167 # seems to be sufficient?
 168 our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
 169
 170 #
 171 # API compatibility name to version number mapping.
 172 #
 173 my $maxapi = "1.1.0";           # API for "no-deprecated" builds
 174 my $apitable = {
 175     "1.1.0" => "0x10100000L",
 176     "1.0.0" => "0x10000000L",
 177     "0.9.8" => "0x00908000L",
 178 };
 179
 180 our %table = ();
 181 our %config = ();
 182 our %withargs = ();
 183 our $now_printing;      # set to current entry's name in print_table_entry
 184                         # (todo: right thing would be to encapsulate name
 185                         # into %target [class] and make print_table_entry
 186                         # a method)
 187
 188 # Forward declarations ###############################################
 189
 190 # read_config(filename)
 191 #
 192 # Reads a configuration file and populates %table with the contents
 193 # (which the configuration file places in %targets).
 194 sub read_config;
 195
 196 # resolve_config(target)
 197 #
 198 # Resolves all the late evaluations, inheritances and so on for the
 199 # chosen target and any target it inherits from.
 200 sub resolve_config;
 201
 202
 203 # Information collection #############################################
 204
 205 # Unified build supports separate build dir
 206 my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
 207 my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
 208 my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));
 209
 210 my $local_config_envname = 'OPENSSL_LOCAL_CONFIG_DIR';
 211
 212 $config{sourcedir} = abs2rel($srcdir);
 213 $config{builddir} = abs2rel($blddir);
 214
 215 # Collect reconfiguration information if needed
 216 my @argvcopy=@ARGV;
 217
 218 if (grep /^reconf(igure)?$/, @argvcopy) {
 219     die "reconfiguring with other arguments present isn't supported"
 220         if scalar @argvcopy > 1;
 221     if (-f "./configdata.pm") {
 222         my $file = "./configdata.pm";
 223         unless (my $return = do $file) {
 224             die "couldn't parse $file: $@" if $@;
 225             die "couldn't do $file: $!"    unless defined $return;
 226             die "couldn't run $file"       unless $return;
 227         }
 228
 229         @argvcopy = defined($configdata::config{perlargv}) ?
 230             @{$configdata::config{perlargv}} : ();
 231         die "Incorrect data to reconfigure, please do a normal configuration\n"
 232             if (grep(/^reconf/,@argvcopy));
 233         $config{perlenv} = $configdata::config{perlenv} // {};
 234     } else {
 235         die "Insufficient data to reconfigure, please do a normal configuration\n";
 236     }
 237 }
 238
 239 $config{perlargv} = [ @argvcopy ];
 240
 241 # Collect version numbers
 242 $config{version} = "unknown";
 243 $config{version_num} = "unknown";
 244 $config{shlib_version_number} = "unknown";
 245 $config{shlib_version_history} = "unknown";
 246
 247 collect_information(
 248     collect_from_file(catfile($srcdir,'include/openssl/opensslv.h')),
 249     qr/OPENSSL.VERSION.TEXT.*OpenSSL (\S+) / => sub { $config{version} = $1; },
 250     qr/OPENSSL.VERSION.NUMBER.*(0x\S+)/      => sub { $config{version_num}=$1 },
 251     qr/SHLIB_VERSION_NUMBER *"([^"]+)"/      => sub { $config{shlib_version_number}=$1 },
 252     qr/SHLIB_VERSION_HISTORY *"([^"]*)"/     => sub { $config{shlib_version_history}=$1 }
 253     );
 254 if ($config{shlib_version_history} ne "") { $config{shlib_version_history} .= ":"; }
 255
 256 ($config{major}, $config{minor})
 257     = ($config{version} =~ /^([0-9]+)\.([0-9\.]+)/);
 258 ($config{shlib_major}, $config{shlib_minor})
 259     = ($config{shlib_version_number} =~ /^([0-9]+)\.([0-9\.]+)/);
 260 die "erroneous version information in opensslv.h: ",
 261     "$config{major}, $config{minor}, $config{shlib_major}, $config{shlib_minor}\n"
 262     if ($config{major} eq "" || $config{minor} eq ""
 263         || $config{shlib_major} eq "" ||  $config{shlib_minor} eq "");
 264
 265 # Collect target configurations
 266
 267 my $pattern = catfile(dirname($0), "Configurations", "*.conf");
 268 foreach (sort glob($pattern)) {
 269     &read_config($_);
 270 }
 271
 272 if (defined env($local_config_envname)) {
 273     if ($^O eq 'VMS') {
 274         # VMS environment variables are logical names,
 275         # which can be used as is
 276         $pattern = $local_config_envname . ':' . '*.conf';
 277     } else {
 278         $pattern = catfile(env($local_config_envname), '*.conf');
 279     }
 280
 281     foreach (sort glob($pattern)) {
 282         &read_config($_);
 283     }
 284 }
 285
 286 # Save away perl command information
 287 $config{perl_cmd} = $^X;
 288 $config{perl_version} = $Config{version};
 289 $config{perl_archname} = $Config{archname};
 290
 291 $config{prefix}="";
 292 $config{openssldir}="";
 293 $config{processor}="";
 294 $config{libdir}="";
 295 my $auto_threads=1;    # enable threads automatically? true by default
 296 my $default_ranlib;
 297
 298 # Top level directories to build
 299 $config{dirs} = [ "crypto", "ssl", "engines", "apps", "test", "util", "tools", "fuzz" ];
 300 # crypto/ subdirectories to build
 301 $config{sdirs} = [
 302     "objects",
 303     "md2", "md4", "md5", "sha", "mdc2", "hmac", "ripemd", "whrlpool", "poly1305", "blake2", "siphash", "sm3",
 304     "des", "aes", "rc2", "rc4", "rc5", "idea", "aria", "bf", "cast", "camellia", "seed", "sm4", "chacha", "modes",
 305     "bn", "ec", "rsa", "dsa", "dh", "sm2", "dso", "engine",
 306     "buffer", "bio", "stack", "lhash", "rand", "err",
 307     "evp", "asn1", "pem", "x509", "x509v3", "conf", "txt_db", "pkcs7", "pkcs12", "comp", "ocsp", "ui",
 308     "cms", "ts", "srp", "cmac", "ct", "async", "kdf", "store"
 309     ];
 310 # test/ subdirectories to build
 311 $config{tdirs} = [ "ossl_shim" ];
 312
 313 # Known TLS and DTLS protocols
 314 my @tls = qw(ssl3 tls1 tls1_1 tls1_2 tls1_3);
 315 my @dtls = qw(dtls1 dtls1_2);
 316
 317 # Explicitly known options that are possible to disable.  They can
 318 # be regexps, and will be used like this: /^no-${option}$/
 319 # For developers: keep it sorted alphabetically
 320
 321 my @disablables = (
 322     "afalgeng",
 323     "aria",
 324     "asan",
 325     "asm",
 326     "async",
 327     "autoalginit",
 328     "autoerrinit",
 329     "autoload-config",
 330     "bf",
 331     "blake2",
 332     "camellia",
 333     "capieng",
 334     "cast",
 335     "chacha",
 336     "cmac",
 337     "cms",
 338     "comp",
 339     "crypto-mdebug",
 340     "crypto-mdebug-backtrace",
 341     "ct",
 342     "deprecated",
 343     "des",
 344     "devcryptoeng",
 345     "dgram",
 346     "dh",
 347     "dsa",
 348     "dso",
 349     "dtls",
 350     "dynamic-engine",
 351     "ec",
 352     "ec2m",
 353     "ecdh",
 354     "ecdsa",
 355     "ec_nistp_64_gcc_128",
 356     "egd",
 357     "engine",
 358     "err",
 359     "external-tests",
 360     "filenames",
 361     "fuzz-libfuzzer",
 362     "fuzz-afl",
 363     "gost",
 364     "heartbeats",
 365     "hw(-.+)?",
 366     "idea",
 367     "makedepend",
 368     "md2",
 369     "md4",
 370     "mdc2",
 371     "msan",
 372     "multiblock",
 373     "nextprotoneg",
 374     "ocb",
 375     "ocsp",
 376     "pic",
 377     "poly1305",
 378     "posix-io",
 379     "psk",
 380     "rc2",
 381     "rc4",
 382     "rc5",
 383     "rdrand",
 384     "rfc3779",
 385     "rmd160",
 386     "scrypt",
 387     "sctp",
 388     "seed",
 389     "shared",
 390     "siphash",
 391     "sm2",
 392     "sm3",
 393     "sm4",
 394     "sock",
 395     "srp",
 396     "srtp",
 397     "sse2",
 398     "ssl",
 399     "ssl-trace",
 400     "static-engine",
 401     "stdio",
 402     "tests",
 403     "threads",
 404     "tls",
 405     "tls13downgrade",
 406     "ts",
 407     "ubsan",
 408     "ui-console",
 409     "unit-test",
 410     "whirlpool",
 411     "weak-ssl-ciphers",
 412     "zlib",
 413     "zlib-dynamic",
 414     );
 415 foreach my $proto ((@tls, @dtls))
 416         {
 417         push(@disablables, $proto);
 418         push(@disablables, "$proto-method") unless $proto eq "tls1_3";
 419         }
 420
 421 my %deprecated_disablables = (
 422     "ssl2" => undef,
 423     "buf-freelists" => undef,
 424     "ripemd" => "rmd160",
 425     "ui" => "ui-console",
 426     );
 427
 428 # All of the following are disabled by default:
 429
 430 our %disabled = ( # "what"         => "comment"
 431                   "asan"                => "default",
 432                   "crypto-mdebug"       => "default",
 433                   "crypto-mdebug-backtrace" => "default",
 434                   "devcryptoeng"        => "default",
 435                   "ec_nistp_64_gcc_128" => "default",
 436                   "egd"                 => "default",
 437                   "external-tests"      => "default",
 438                   "fuzz-libfuzzer"      => "default",
 439                   "fuzz-afl"            => "default",
 440                   "heartbeats"          => "default",
 441                   "md2"                 => "default",
 442                   "msan"                => "default",
 443                   "rc5"                 => "default",
 444                   "sctp"                => "default",
 445                   "ssl-trace"           => "default",
 446                   "ssl3"                => "default",
 447                   "ssl3-method"         => "default",
 448                   "ubsan"               => "default",
 449                   "tls13downgrade"      => "default",
 450                   "unit-test"           => "default",
 451                   "weak-ssl-ciphers"    => "default",
 452                   "zlib"                => "default",
 453                   "zlib-dynamic"        => "default",
 454                 );
 455
 456 # Note: => pair form used for aesthetics, not to truly make a hash table
 457 my @disable_cascades = (
 458     # "what"            => [ "cascade", ... ]
 459     sub { $config{processor} eq "386" }
 460                         => [ "sse2" ],
 461     "ssl"               => [ "ssl3" ],
 462     "ssl3-method"       => [ "ssl3" ],
 463     "zlib"              => [ "zlib-dynamic" ],
 464     "des"               => [ "mdc2" ],
 465     "ec"                => [ "ecdsa", "ecdh" ],
 466
 467     "dgram"             => [ "dtls", "sctp" ],
 468     "sock"              => [ "dgram" ],
 469     "dtls"              => [ @dtls ],
 470     sub { 0 == scalar grep { !$disabled{$_} } @dtls }
 471                         => [ "dtls" ],
 472
 473     "tls"               => [ @tls ],
 474     sub { 0 == scalar grep { !$disabled{$_} } @tls }
 475                         => [ "tls" ],
 476
 477     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
 478
 479     # Without DSO, we can't load dynamic engines, so don't build them dynamic
 480     "dso"               => [ "dynamic-engine" ],
 481
 482     # Without position independent code, there can be no shared libraries or DSOs
 483     "pic"               => [ "shared" ],
 484     "shared"            => [ "dynamic-engine" ],
 485     "engine"            => [ "afalgeng", "devcryptoeng" ],
 486
 487     # no-autoalginit is only useful when building non-shared
 488     "autoalginit"       => [ "shared", "apps" ],
 489
 490     "stdio"             => [ "apps", "capieng", "egd" ],
 491     "apps"              => [ "tests" ],
 492     "tests"             => [ "external-tests" ],
 493     "comp"              => [ "zlib" ],
 494     "ec"                => [ "tls1_3", "sm2" ],
 495     "sm3"               => [ "sm2" ],
 496     sub { !$disabled{"unit-test"} } => [ "heartbeats" ],
 497
 498     sub { !$disabled{"msan"} } => [ "asm" ],
 499     );
 500
 501 # Avoid protocol support holes.  Also disable all versions below N, if version
 502 # N is disabled while N+1 is enabled.
 503 #
 504 my @list = (reverse @tls);
 505 while ((my $first, my $second) = (shift @list, shift @list)) {
 506     last unless @list;
 507     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 508                               => [ @list ] );
 509     unshift @list, $second;
 510 }
 511 my @list = (reverse @dtls);
 512 while ((my $first, my $second) = (shift @list, shift @list)) {
 513     last unless @list;
 514     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 515                               => [ @list ] );
 516     unshift @list, $second;
 517 }
 518
 519 # Explicit "no-..." options will be collected in %disabled along with the defaults.
 520 # To remove something from %disabled, use "enable-foo".
 521 # For symmetry, "disable-foo" is a synonym for "no-foo".
 522
 523 &usage if ($#ARGV < 0);
 524
 525 # For the "make variables" CINCLUDES and CDEFINES, we support lists with
 526 # platform specific list separators.  Users from those platforms should
 527 # recognise those separators from how you set up the PATH to find executables.
 528 # The default is the Unix like separator, :, but as an exception, we also
 529 # support the space as separator.
 530 my $list_separator_re =
 531     { VMS           => qr/(?<!\^),/,
 532       MSWin32       => qr/(?<!\\);/ } -> {$^O} // qr/(?<!\\)[:\s]/;
 533 # All the "make variables" we support
 534 # Some get pre-populated for the sake of backward compatibility
 535 # (we supported those before the change to "make variable" support.
 536 my %user = (
 537     AR          => env('AR'),
 538     ARFLAGS     => [],
 539     AS          => undef,
 540     ASFLAGS     => [],
 541     CC          => env('CC'),
 542     CFLAGS      => [],
 543     CXX         => env('CXX'),
 544     CXXFLAGS    => [],
 545     CPP         => undef,
 546     CPPFLAGS    => [],  # -D, -I, -Wp,
 547     CPPDEFINES  => [],  # Alternative for -D
 548     CPPINCLUDES => [],  # Alternative for -I
 549     CROSS_COMPILE => env('CROSS_COMPILE'),
 550     HASHBANGPERL=> env('HASHBANGPERL') || env('PERL'),
 551     LD          => undef,
 552     LDFLAGS     => [],  # -L, -Wl,
 553     LDLIBS      => [],  # -l
 554     MT          => undef,
 555     MTFLAGS     => [],
 556     PERL        => env('PERL') || ($^O ne "VMS" ? $^X : "perl"),
 557     RANLIB      => env('RANLIB'),
 558     RC          => env('RC') || env('WINDRES'),
 559     RCFLAGS     => [],
 560     RM          => undef,
 561    );
 562 # Info about what "make variables" may be prefixed with the cross compiler
 563 # prefix.  This should NEVER mention any such variable with a list for value.
 564 my @user_crossable = qw ( AR AS CC CXX CPP LD MT RANLIB RC );
 565 # The same but for flags given as Configure options.  These are *additional*
 566 # input, as opposed to the VAR=string option that override the corresponding
 567 # config target attributes
 568 my %useradd = (
 569     CPPDEFINES  => [],
 570     CPPINCLUDES => [],
 571     CPPFLAGS    => [],
 572     CFLAGS      => [],
 573     CXXFLAGS    => [],
 574     LDFLAGS     => [],
 575     LDLIBS      => [],
 576    );
 577
 578 my %user_synonyms = (
 579     HASHBANGPERL=> 'PERL',
 580     RC          => 'WINDRES',
 581    );
 582
 583 # Some target attributes have been renamed, this is the translation table
 584 my %target_attr_translate =(
 585     ar          => 'AR',
 586     as          => 'AS',
 587     cc          => 'CC',
 588     cxx         => 'CXX',
 589     cpp         => 'CPP',
 590     hashbangperl => 'HASHBANGPERL',
 591     ld          => 'LD',
 592     mt          => 'MT',
 593     ranlib      => 'RANLIB',
 594     rc          => 'RC',
 595     rm          => 'RM',
 596    );
 597
 598 # Initialisers coming from 'config' scripts
 599 $config{defines} = [ split(/$list_separator_re/, env('__CNF_CPPDEFINES')) ];
 600 $config{includes} = [ split(/$list_separator_re/, env('__CNF_CPPINCLUDES')) ];
 601 $config{cppflags} = [ env('__CNF_CPPFLAGS') || () ];
 602 $config{cflags} = [ env('__CNF_CFLAGS') || () ];
 603 $config{cxxflags} = [ env('__CNF_CXXFLAGS') || () ];
 604 $config{lflags} = [ env('__CNF_LDFLAGS') || () ];
 605 $config{ex_libs} = [ env('__CNF_LDLIBS') || () ];
 606
 607 $config{openssl_api_defines}=[];
 608 $config{openssl_algorithm_defines}=[];
 609 $config{openssl_thread_defines}=[];
 610 $config{openssl_sys_defines}=[];
 611 $config{openssl_other_defines}=[];
 612 $config{options}="";
 613 $config{build_type} = "release";
 614 my $target="";
 615
 616 my %cmdvars = ();               # Stores FOO='blah' type arguments
 617 my %unsupported_options = ();
 618 my %deprecated_options = ();
 619 # If you change this, update apps/version.c
 620 my @known_seed_sources = qw(getrandom devrandom os egd none rdcpu librandom);
 621 my @seed_sources = ();
 622 while (@argvcopy)
 623         {
 624         $_ = shift @argvcopy;
 625
 626         # Support env variable assignments among the options
 627         if (m|^(\w+)=(.+)?$|)
 628                 {
 629                 $cmdvars{$1} = $2;
 630                 # Every time a variable is given as a configuration argument,
 631                 # it acts as a reset if the variable.
 632                 if (exists $user{$1})
 633                         {
 634                         $user{$1} = ref $user{$1} eq "ARRAY" ? [] : undef;
 635                         }
 636                 #if (exists $useradd{$1})
 637                 #       {
 638                 #       $useradd{$1} = [];
 639                 #       }
 640                 next;
 641                 }
 642
 643         # VMS is a case insensitive environment, and depending on settings
 644         # out of our control, we may receive options uppercased.  Let's
 645         # downcase at least the part before any equal sign.
 646         if ($^O eq "VMS")
 647                 {
 648                 s/^([^=]*)/lc($1)/e;
 649                 }
 650
 651         # some people just can't read the instructions, clang people have to...
 652         s/^-no-(?!integrated-as)/no-/;
 653
 654         # rewrite some options in "enable-..." form
 655         s /^-?-?shared$/enable-shared/;
 656         s /^sctp$/enable-sctp/;
 657         s /^threads$/enable-threads/;
 658         s /^zlib$/enable-zlib/;
 659         s /^zlib-dynamic$/enable-zlib-dynamic/;
 660
 661         if (/^(no|disable|enable)-(.+)$/)
 662                 {
 663                 my $word = $2;
 664                 if (!exists $deprecated_disablables{$word}
 665                         && !grep { $word =~ /^${_}$/ } @disablables)
 666                         {
 667                         $unsupported_options{$_} = 1;
 668                         next;
 669                         }
 670                 }
 671         if (/^no-(.+)$/ || /^disable-(.+)$/)
 672                 {
 673                 foreach my $proto ((@tls, @dtls))
 674                         {
 675                         if ($1 eq "$proto-method")
 676                                 {
 677                                 $disabled{"$proto"} = "option($proto-method)";
 678                                 last;
 679                                 }
 680                         }
 681                 if ($1 eq "dtls")
 682                         {
 683                         foreach my $proto (@dtls)
 684                                 {
 685                                 $disabled{$proto} = "option(dtls)";
 686                                 }
 687                         $disabled{"dtls"} = "option(dtls)";
 688                         }
 689                 elsif ($1 eq "ssl")
 690                         {
 691                         # Last one of its kind
 692                         $disabled{"ssl3"} = "option(ssl)";
 693                         }
 694                 elsif ($1 eq "tls")
 695                         {
 696                         # XXX: Tests will fail if all SSL/TLS
 697                         # protocols are disabled.
 698                         foreach my $proto (@tls)
 699                                 {
 700                                 $disabled{$proto} = "option(tls)";
 701                                 }
 702                         }
 703                 elsif ($1 eq "static-engine")
 704                         {
 705                         delete $disabled{"dynamic-engine"};
 706                         }
 707                 elsif ($1 eq "dynamic-engine")
 708                         {
 709                         $disabled{"dynamic-engine"} = "option";
 710                         }
 711                 elsif (exists $deprecated_disablables{$1})
 712                         {
 713                         $deprecated_options{$_} = 1;
 714                         if (defined $deprecated_disablables{$1})
 715                                 {
 716                                 $disabled{$deprecated_disablables{$1}} = "option";
 717                                 }
 718                         }
 719                 else
 720                         {
 721                         $disabled{$1} = "option";
 722                         }
 723                 # No longer an automatic choice
 724                 $auto_threads = 0 if ($1 eq "threads");
 725                 }
 726         elsif (/^enable-(.+)$/)
 727                 {
 728                 if ($1 eq "static-engine")
 729                         {
 730                         $disabled{"dynamic-engine"} = "option";
 731                         }
 732                 elsif ($1 eq "dynamic-engine")
 733                         {
 734                         delete $disabled{"dynamic-engine"};
 735                         }
 736                 elsif ($1 eq "zlib-dynamic")
 737                         {
 738                         delete $disabled{"zlib"};
 739                         }
 740                 my $algo = $1;
 741                 delete $disabled{$algo};
 742
 743                 # No longer an automatic choice
 744                 $auto_threads = 0 if ($1 eq "threads");
 745                 }
 746         elsif (/^--strict-warnings$/)
 747                 {
 748                 $strict_warnings = 1;
 749                 }
 750         elsif (/^--debug$/)
 751                 {
 752                 $config{build_type} = "debug";
 753                 }
 754         elsif (/^--release$/)
 755                 {
 756                 $config{build_type} = "release";
 757                 }
 758         elsif (/^386$/)
 759                 { $config{processor}=386; }
 760         elsif (/^fips$/)
 761                 {
 762                 die "FIPS mode not supported\n";
 763                 }
 764         elsif (/^rsaref$/)
 765                 {
 766                 # No RSAref support any more since it's not needed.
 767                 # The check for the option is there so scripts aren't
 768                 # broken
 769                 }
 770         elsif (/^nofipscanistercheck$/)
 771                 {
 772                 die "FIPS mode not supported\n";
 773                 }
 774         elsif (/^[-+]/)
 775                 {
 776                 if (/^--prefix=(.*)$/)
 777                         {
 778                         $config{prefix}=$1;
 779                         die "Directory given with --prefix MUST be absolute\n"
 780                                 unless file_name_is_absolute($config{prefix});
 781                         }
 782                 elsif (/^--api=(.*)$/)
 783                         {
 784                         $config{api}=$1;
 785                         }
 786                 elsif (/^--libdir=(.*)$/)
 787                         {
 788                         $config{libdir}=$1;
 789                         }
 790                 elsif (/^--openssldir=(.*)$/)
 791                         {
 792                         $config{openssldir}=$1;
 793                         }
 794                 elsif (/^--with-zlib-lib=(.*)$/)
 795                         {
 796                         $withargs{zlib_lib}=$1;
 797                         }
 798                 elsif (/^--with-zlib-include=(.*)$/)
 799                         {
 800                         $withargs{zlib_include}=$1;
 801                         }
 802                 elsif (/^--with-fuzzer-lib=(.*)$/)
 803                         {
 804                         $withargs{fuzzer_lib}=$1;
 805                         }
 806                 elsif (/^--with-fuzzer-include=(.*)$/)
 807                         {
 808                         $withargs{fuzzer_include}=$1;
 809                         }
 810                 elsif (/^--with-rand-seed=(.*)$/)
 811                         {
 812                         foreach my $x (split(m|,|, $1))
 813                             {
 814                             die "Unknown --with-rand-seed choice $x\n"
 815                                 if ! grep { $x eq $_ } @known_seed_sources;
 816                             push @seed_sources, $x;
 817                             }
 818                         }
 819                 elsif (/^--cross-compile-prefix=(.*)$/)
 820                         {
 821                         $user{CROSS_COMPILE}=$1;
 822                         }
 823                 elsif (/^--config=(.*)$/)
 824                         {
 825                         read_config $1;
 826                         }
 827                 elsif (/^-l(.*)$/)
 828                         {
 829                         push @{$useradd{LDLIBS}}, $_;
 830                         }
 831                 elsif (/^-framework$/)
 832                         {
 833                         push @{$useradd{LDLIBS}}, $_, shift(@argvcopy);
 834                         }
 835                 elsif (/^-L(.*)$/ or /^-Wl,/)
 836                         {
 837                         push @{$useradd{LDFLAGS}}, $_;
 838                         }
 839                 elsif (/^-rpath$/ or /^-R$/)
 840                         # -rpath is the OSF1 rpath flag
 841                         # -R is the old Solaris rpath flag
 842                         {
 843                         my $rpath = shift(@argvcopy) || "";
 844                         $rpath .= " " if $rpath ne "";
 845                         push @{$useradd{LDFLAGS}}, $_, $rpath;
 846                         }
 847                 elsif (/^-static$/)
 848                         {
 849                         push @{$useradd{LDFLAGS}}, $_;
 850                         $disabled{"dso"} = "forced";
 851                         $disabled{"pic"} = "forced";
 852                         $disabled{"shared"} = "forced";
 853                         $disabled{"threads"} = "forced";
 854                         }
 855                 elsif (/^-D(.*)$/)
 856                         {
 857                         push @{$useradd{CPPDEFINES}}, $1;
 858                         }
 859                 elsif (/^-I(.*)$/)
 860                         {
 861                         push @{$useradd{CPPINCLUDES}}, $1;
 862                         }
 863                 elsif (/^-Wp,$/)
 864                         {
 865                         push @{$useradd{CPPFLAGS}}, $1;
 866                         }
 867                 else    # common if (/^[-+]/), just pass down...
 868                         {
 869                         $_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
 870                         push @{$useradd{CFLAGS}}, $_;
 871                         push @{$useradd{CXXFLAGS}}, $_;
 872                         }
 873                 }
 874         else
 875                 {
 876                 die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
 877                 $target=$_;
 878                 }
 879         unless ($_ eq $target || /^no-/ || /^disable-/)
 880                 {
 881                 # "no-..." follows later after implied deactivations
 882                 # have been derived.  (Don't take this too seriously,
 883                 # we really only write OPTIONS to the Makefile out of
 884                 # nostalgia.)
 885
 886                 if ($config{options} eq "")
 887                         { $config{options} = $_; }
 888                 else
 889                         { $config{options} .= " ".$_; }
 890                 }
 891
 892         if (defined($config{api}) && !exists $apitable->{$config{api}}) {
 893                 die "***** Unsupported api compatibility level: $config{api}\n",
 894         }
 895
 896         if (keys %deprecated_options)
 897                 {
 898                 warn "***** Deprecated options: ",
 899                         join(", ", keys %deprecated_options), "\n";
 900                 }
 901         if (keys %unsupported_options)
 902                 {
 903                 die "***** Unsupported options: ",
 904                         join(", ", keys %unsupported_options), "\n";
 905                 }
 906         }
 907
 908 # If any %useradd entry has been set, we must check that the "make
 909 # variables" haven't been set.  We start by checking of any %useradd entry
 910 # is set.
 911 if (grep { scalar @$_ > 0 } values %useradd) {
 912     # Hash of env / make variables names.  The possible values are:
 913     # 1 - "make vars"
 914     # 2 - %useradd entry set
 915     # 3 - both set
 916     my %detected_vars =
 917         map { my $v = 0;
 918               $v += 1 if $cmdvars{$_};
 919               $v += 2 if @{$useradd{$_}};
 920               $_ => $v }
 921         keys %useradd;
 922
 923     # If any of the corresponding "make variables" is set, we error
 924     if (grep { $_ & 1 } values %detected_vars) {
 925         my $names = join(', ', grep { $detected_vars{$_} > 0 }
 926                                sort keys %detected_vars);
 927         die <<"_____";
 928 ***** Mixing make variables and additional compiler/linker flags as
 929 ***** configure command line option is not permitted.
 930 ***** Affected make variables: $names
 931 _____
 932     }
 933 }
 934
 935 # Check through all supported command line variables to see if any of them
 936 # were set, and canonicalise the values we got.  If no compiler or linker
 937 # flag or anything else that affects %useradd was set, we also check the
 938 # environment for values.
 939 my $anyuseradd =
 940     grep { defined $_ && (ref $_ ne 'ARRAY' || @$_) } values %useradd;
 941 foreach (keys %user) {
 942     my $value = $cmdvars{$_};
 943     $value //= env($_) unless $anyuseradd;
 944     $value //=
 945         defined $user_synonyms{$_} ? $cmdvars{$user_synonyms{$_}} : undef;
 946     $value //= defined $user_synonyms{$_} ? env($user_synonyms{$_}) : undef
 947         unless $anyuseradd;
 948
 949     if (defined $value) {
 950         if (ref $user{$_} eq 'ARRAY') {
 951             $user{$_} = [ split /$list_separator_re/, $value ];
 952         } elsif (!defined $user{$_}) {
 953             $user{$_} = $value;
 954         }
 955     }
 956 }
 957
 958 if (grep { /-rpath\b/ } ($user{LDFLAGS} ? @{$user{LDFLAGS}} : ())
 959     && !$disabled{shared}
 960     && !($disabled{asan} && $disabled{msan} && $disabled{ubsan})) {
 961     die "***** Cannot simultaneously use -rpath, shared libraries, and\n",
 962         "***** any of asan, msan or ubsan\n";
 963 }
 964
 965 my @tocheckfor = (keys %disabled);
 966 while (@tocheckfor) {
 967     my %new_tocheckfor = ();
 968     my @cascade_copy = (@disable_cascades);
 969     while (@cascade_copy) {
 970         my ($test, $descendents) = (shift @cascade_copy, shift @cascade_copy);
 971         if (ref($test) eq "CODE" ? $test->() : defined($disabled{$test})) {
 972             foreach(grep { !defined($disabled{$_}) } @$descendents) {
 973                 $new_tocheckfor{$_} = 1; $disabled{$_} = "forced";
 974             }
 975         }
 976     }
 977     @tocheckfor = (keys %new_tocheckfor);
 978 }
 979
 980 our $die = sub { die @_; };
 981 if ($target eq "TABLE") {
 982     local $die = sub { warn @_; };
 983     foreach (sort keys %table) {
 984         print_table_entry($_, "TABLE");
 985     }
 986     exit 0;
 987 }
 988
 989 if ($target eq "LIST") {
 990     foreach (sort keys %table) {
 991         print $_,"\n" unless $table{$_}->{template};
 992     }
 993     exit 0;
 994 }
 995
 996 if ($target eq "HASH") {
 997     local $die = sub { warn @_; };
 998     print "%table = (\n";
 999     foreach (sort keys %table) {
1000         print_table_entry($_, "HASH");
1001     }
1002     exit 0;
1003 }
1004
1005 print "Configuring OpenSSL version $config{version} ($config{version_num}) ";
1006 print "for $target\n";
1007
1008 if (scalar(@seed_sources) == 0) {
1009     print "Using os-specific seed configuration\n";
1010     push @seed_sources, 'os';
1011 }
1012 die "Cannot seed with none and anything else"
1013     if scalar(grep { $_ eq 'none' } @seed_sources) > 0
1014         && scalar(@seed_sources) > 1;
1015 push @{$config{openssl_other_defines}},
1016      map { (my $x = $_) =~ tr|[\-a-z]|[_A-Z]|; "OPENSSL_RAND_SEED_$x" }
1017         @seed_sources;
1018
1019 # Backward compatibility?
1020 if ($target =~ m/^CygWin32(-.*)$/) {
1021     $target = "Cygwin".$1;
1022 }
1023
1024 # Support for legacy targets having a name starting with 'debug-'
1025 my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
1026 if ($d) {
1027     $config{build_type} = "debug";
1028
1029     # If we do not find debug-foo in the table, the target is set to foo.
1030     if (!$table{$target}) {
1031         $target = $t;
1032     }
1033 }
1034 $config{target} = $target;
1035 my %target = resolve_config($target);
1036
1037 &usage if (!%target || $target{template});
1038
1039 foreach (keys %target_attr_translate) {
1040     $target{$target_attr_translate{$_}} = $target{$_}
1041         if $target{$_};
1042     delete $target{$_};
1043 }
1044
1045 %target = ( %{$table{DEFAULTS}}, %target );
1046
1047 # Make the flags to build DSOs the same as for shared libraries unless they
1048 # are already defined
1049 $target{module_cflags} = $target{shared_cflag} unless defined $target{module_cflags};
1050 $target{module_cxxflags} = $target{shared_cxxflag} unless defined $target{module_cxxflags};
1051 $target{module_ldflags} = $target{shared_ldflag} unless defined $target{module_ldflags};
1052 {
1053     my $shared_info_pl =
1054         catfile(dirname($0), "Configurations", "shared-info.pl");
1055     my %shared_info = read_eval_file($shared_info_pl);
1056     push @{$target{_conf_fname_int}}, $shared_info_pl;
1057     my $si = $target{shared_target};
1058     while (ref $si ne "HASH") {
1059         last if ! defined $si;
1060         if (ref $si eq "CODE") {
1061             $si = $si->();
1062         } else {
1063             $si = $shared_info{$si};
1064         }
1065     }
1066
1067     # Some of the 'shared_target' values don't have any entried in
1068     # %shared_info.  That's perfectly fine, AS LONG AS the build file
1069     # template knows how to handle this.  That is currently the case for
1070     # Windows and VMS.
1071     if (defined $si) {
1072         # Just as above, copy certain shared_* attributes to the corresponding
1073         # module_ attribute unless the latter is already defined
1074         $si->{module_cflags} = $si->{shared_cflag} unless defined $si->{module_cflags};
1075         $si->{module_cxxflags} = $si->{shared_cxxflag} unless defined $si->{module_cxxflags};
1076         $si->{module_ldflags} = $si->{shared_ldflag} unless defined $si->{module_ldflags};
1077         foreach (sort keys %$si) {
1078             $target{$_} = defined $target{$_}
1079                 ? add($si->{$_})->($target{$_})
1080                 : $si->{$_};
1081         }
1082     }
1083 }
1084
1085 my %conf_files = map { $_ => 1 } (@{$target{_conf_fname_int}});
1086 $config{conf_files} = [ sort keys %conf_files ];
1087
1088 foreach my $feature (@{$target{disable}}) {
1089     if (exists $deprecated_disablables{$feature}) {
1090         warn "***** config $target disables deprecated feature $feature\n";
1091     } elsif (!grep { $feature eq $_ } @disablables) {
1092         die "***** config $target disables unknown feature $feature\n";
1093     }
1094     $disabled{$feature} = 'config';
1095 }
1096 foreach my $feature (@{$target{enable}}) {
1097     if ("default" eq ($disabled{$_} // "")) {
1098         if (exists $deprecated_disablables{$feature}) {
1099             warn "***** config $target enables deprecated feature $feature\n";
1100         } elsif (!grep { $feature eq $_ } @disablables) {
1101             die "***** config $target enables unknown feature $feature\n";
1102         }
1103         delete $disabled{$_};
1104     }
1105 }
1106
1107 $target{CXXFLAGS}//=$target{CFLAGS} if $target{CXX};
1108 $target{cxxflags}//=$target{cflags} if $target{CXX};
1109 $target{exe_extension}="";
1110 $target{exe_extension}=".exe" if ($config{target} eq "DJGPP"
1111                                   || $config{target} =~ /^(?:Cygwin|mingw)/);
1112 $target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
1113
1114 ($target{shared_extension_simple}=$target{shared_extension})
1115     =~ s|\.\$\(SHLIB_VERSION_NUMBER\)||
1116     unless defined($target{shared_extension_simple});
1117 $target{dso_extension}//=$target{shared_extension_simple};
1118 ($target{shared_import_extension}=$target{shared_extension_simple}.".a")
1119     if ($config{target} =~ /^(?:Cygwin|mingw)/);
1120
1121 # Fill %config with values from %user, and in case those are undefined or
1122 # empty, use values from %target (acting as a default).
1123 foreach (keys %user) {
1124     my $ref_type = ref $user{$_};
1125
1126     # Temporary function.  Takes an intended ref type (empty string or "ARRAY")
1127     # and a value that's to be coerced into that type.
1128     my $mkvalue = sub {
1129         my $type = shift;
1130         my $value = shift;
1131         my $undef_p = shift;
1132
1133         die "Too many arguments for \$mkvalue" if @_;
1134
1135         while (ref $value eq 'CODE') {
1136             $value = $value->();
1137         }
1138
1139         if ($type eq 'ARRAY') {
1140             return undef unless defined $value;
1141             return undef if ref $value ne 'ARRAY' && !$value;
1142             return undef if ref $value eq 'ARRAY' && !@$value;
1143             return [ $value ] unless ref $value eq 'ARRAY';
1144         }
1145         return undef unless $value;
1146         return $value;
1147     };
1148
1149     $config{$_} =
1150         $mkvalue->($ref_type, $user{$_})
1151         || $mkvalue->($ref_type, $target{$_});
1152     delete $config{$_} unless defined $config{$_};
1153 }
1154
1155 # Allow overriding the build file name
1156 $config{build_file} = env('BUILDFILE') || $target{build_file} || "Makefile";
1157
1158 my %disabled_info = ();         # For configdata.pm
1159 foreach my $what (sort keys %disabled) {
1160     $config{options} .= " no-$what";
1161
1162     if (!grep { $what eq $_ } ( 'dso', 'threads', 'shared', 'pic',
1163                                 'dynamic-engine', 'makedepend',
1164                                 'zlib-dynamic', 'zlib', 'sse2' )) {
1165         (my $WHAT = uc $what) =~ s|-|_|g;
1166
1167         # Fix up C macro end names
1168         $WHAT = "RMD160" if $what eq "ripemd";
1169
1170         # fix-up crypto/directory name(s)
1171         $what = "ripemd" if $what eq "rmd160";
1172         $what = "whrlpool" if $what eq "whirlpool";
1173
1174         my $macro = $disabled_info{$what}->{macro} = "OPENSSL_NO_$WHAT";
1175
1176         if ((grep { $what eq $_ } @{$config{sdirs}})
1177                 && $what ne 'async' && $what ne 'err') {
1178             @{$config{sdirs}} = grep { $what ne $_} @{$config{sdirs}};
1179             $disabled_info{$what}->{skipped} = [ catdir('crypto', $what) ];
1180
1181             if ($what ne 'engine') {
1182                 push @{$config{openssl_algorithm_defines}}, $macro;
1183             } else {
1184                 @{$config{dirs}} = grep !/^engines$/, @{$config{dirs}};
1185                 push @{$disabled_info{engine}->{skipped}}, catdir('engines');
1186                 push @{$config{openssl_other_defines}}, $macro;
1187             }
1188         } else {
1189             push @{$config{openssl_other_defines}}, $macro;
1190         }
1191
1192     }
1193 }
1194
1195 # Make sure build_scheme is consistent.
1196 $target{build_scheme} = [ $target{build_scheme} ]
1197     if ref($target{build_scheme}) ne "ARRAY";
1198
1199 my ($builder, $builder_platform, @builder_opts) =
1200     @{$target{build_scheme}};
1201
1202 foreach my $checker (($builder_platform."-".$target{build_file}."-checker.pm",
1203                       $builder_platform."-checker.pm")) {
1204     my $checker_path = catfile($srcdir, "Configurations", $checker);
1205     if (-f $checker_path) {
1206         my $fn = $ENV{CONFIGURE_CHECKER_WARN}
1207             ? sub { warn $@; } : sub { die $@; };
1208         if (! do $checker_path) {
1209             if ($@) {
1210                 $fn->($@);
1211             } elsif ($!) {
1212                 $fn->($!);
1213             } else {
1214                 $fn->("The detected tools didn't match the platform\n");
1215             }
1216         }
1217         last;
1218     }
1219 }
1220
1221 push @{$config{defines}}, "NDEBUG"    if $config{build_type} eq "release";
1222
1223 if ($target =~ /^mingw/ && `$config{CC} --target-help 2>&1` =~ m/-mno-cygwin/m)
1224         {
1225         push @{$config{cflags}}, "-mno-cygwin";
1226         push @{$config{cxxflags}}, "-mno-cygwin" if $config{CXX};
1227         push @{$config{shared_ldflag}}, "-mno-cygwin";
1228         }
1229
1230 if ($target =~ /linux.*-mips/ && !$disabled{asm}
1231         && !grep { $_ !~ /-m(ips|arch=)/ } (@{$user{CFLAGS}},
1232                                             @{$useradd{CFLAGS}})) {
1233         # minimally required architecture flags for assembly modules
1234         my $value;
1235         $value = '-mips2' if ($target =~ /mips32/);
1236         $value = '-mips3' if ($target =~ /mips64/);
1237         unshift @{$config{cflags}}, $value;
1238         unshift @{$config{cxxflags}}, $value if $config{CXX};
1239 }
1240
1241 # If threads aren't disabled, check how possible they are
1242 unless ($disabled{threads}) {
1243     if ($auto_threads) {
1244         # Enabled by default, disable it forcibly if unavailable
1245         if ($target{thread_scheme} eq "(unknown)") {
1246             $disabled{threads} = "unavailable";
1247         }
1248     } else {
1249         # The user chose to enable threads explicitly, let's see
1250         # if there's a chance that's possible
1251         if ($target{thread_scheme} eq "(unknown)") {
1252             # If the user asked for "threads" and we don't have internal
1253             # knowledge how to do it, [s]he is expected to provide any
1254             # system-dependent compiler options that are necessary.  We
1255             # can't truly check that the given options are correct, but
1256             # we expect the user to know what [s]He is doing.
1257             if (!@{$user{CFLAGS}} && !@{$useradd{CFLAGS}}
1258                     && !@{$user{CPPDEFINES}} && !@{$useradd{CPPDEFINES}}) {
1259                 die "You asked for multi-threading support, but didn't\n"
1260                     ,"provide any system-specific compiler options\n";
1261             }
1262         }
1263     }
1264 }
1265
1266 # If threads still aren't disabled, add a C macro to ensure the source
1267 # code knows about it.  Any other flag is taken care of by the configs.
1268 unless($disabled{threads}) {
1269     push @{$config{openssl_thread_defines}}, "OPENSSL_THREADS";
1270 }
1271
1272 # With "deprecated" disable all deprecated features.
1273 if (defined($disabled{"deprecated"})) {
1274         $config{api} = $maxapi;
1275 }
1276
1277 my $no_shared_warn=0;
1278 if ($target{shared_target} eq "")
1279         {
1280         $no_shared_warn = 1
1281             if (!$disabled{shared} || !$disabled{"dynamic-engine"});
1282         $disabled{shared} = "no-shared-target";
1283         $disabled{pic} = $disabled{shared} = $disabled{"dynamic-engine"} =
1284             "no-shared-target";
1285         }
1286
1287 if ($disabled{"dynamic-engine"}) {
1288         push @{$config{openssl_other_defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
1289         $config{dynamic_engines} = 0;
1290 } else {
1291         push @{$config{openssl_other_defines}}, "OPENSSL_NO_STATIC_ENGINE";
1292         $config{dynamic_engines} = 1;
1293 }
1294
1295 unless ($disabled{asan}) {
1296     push @{$config{cflags}}, "-fsanitize=address";
1297     push @{$config{cxxflags}}, "-fsanitize=address" if $config{CXX};
1298 }
1299
1300 unless ($disabled{ubsan}) {
1301     # -DPEDANTIC or -fnosanitize=alignment may also be required on some
1302     # platforms.
1303     push @{$config{cflags}}, "-fsanitize=undefined", "-fno-sanitize-recover=all";
1304     push @{$config{cxxflags}}, "-fsanitize=undefined", "-fno-sanitize-recover=all"
1305         if $config{CXX};
1306 }
1307
1308 unless ($disabled{msan}) {
1309   push @{$config{cflags}}, "-fsanitize=memory";
1310   push @{$config{cxxflags}}, "-fsanitize=memory" if $config{CXX};
1311 }
1312
1313 unless ($disabled{"fuzz-libfuzzer"} && $disabled{"fuzz-afl"}
1314         && $disabled{asan} && $disabled{ubsan} && $disabled{msan}) {
1315     push @{$config{cflags}}, "-fno-omit-frame-pointer", "-g";
1316     push @{$config{cxxflags}}, "-fno-omit-frame-pointer", "-g" if $config{CXX};
1317 }
1318 #
1319 # Platform fix-ups
1320 #
1321
1322 # This saves the build files from having to check
1323 if ($disabled{pic})
1324         {
1325         foreach (qw(shared_cflag shared_cxxflag shared_cppflag
1326                     shared_defines shared_includes shared_ldflag
1327                     module_cflags module_cxxflags module_cppflags
1328                     module_defines module_includes module_lflags))
1329                 {
1330                 delete $config{$_};
1331                 $target{$_} = "";
1332                 }
1333         }
1334 else
1335         {
1336         push @{$config{lib_defines}}, "OPENSSL_PIC";
1337         }
1338
1339 if ($target{sys_id} ne "")
1340         {
1341         push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
1342         }
1343
1344 unless ($disabled{asm}) {
1345     $target{cpuid_asm_src}=$table{DEFAULTS}->{cpuid_asm_src} if ($config{processor} eq "386");
1346     push @{$config{lib_defines}}, "OPENSSL_CPUID_OBJ" if ($target{cpuid_asm_src} ne "mem_clr.c");
1347
1348     $target{bn_asm_src} =~ s/\w+-gf2m.c// if (defined($disabled{ec2m}));
1349
1350     # bn-586 is the only one implementing bn_*_part_words
1351     push @{$config{lib_defines}}, "OPENSSL_BN_ASM_PART_WORDS" if ($target{bn_asm_src} =~ /bn-586/);
1352     push @{$config{lib_defines}}, "OPENSSL_IA32_SSE2" if (!$disabled{sse2} && $target{bn_asm_src} =~ /86/);
1353
1354     push @{$config{lib_defines}}, "OPENSSL_BN_ASM_MONT" if ($target{bn_asm_src} =~ /-mont/);
1355     push @{$config{lib_defines}}, "OPENSSL_BN_ASM_MONT5" if ($target{bn_asm_src} =~ /-mont5/);
1356     push @{$config{lib_defines}}, "OPENSSL_BN_ASM_GF2m" if ($target{bn_asm_src} =~ /-gf2m/);
1357
1358     if ($target{sha1_asm_src}) {
1359         push @{$config{lib_defines}}, "SHA1_ASM"   if ($target{sha1_asm_src} =~ /sx86/ || $target{sha1_asm_src} =~ /sha1/);
1360         push @{$config{lib_defines}}, "SHA256_ASM" if ($target{sha1_asm_src} =~ /sha256/);
1361         push @{$config{lib_defines}}, "SHA512_ASM" if ($target{sha1_asm_src} =~ /sha512/);
1362     }
1363     if ($target{keccak1600_asm_src} ne $table{DEFAULTS}->{keccak1600_asm_src}) {
1364         push @{$config{lib_defines}}, "KECCAK1600_ASM";
1365     }
1366     if ($target{rc4_asm_src} ne $table{DEFAULTS}->{rc4_asm_src}) {
1367         push @{$config{lib_defines}}, "RC4_ASM";
1368     }
1369     if ($target{md5_asm_src}) {
1370         push @{$config{lib_defines}}, "MD5_ASM";
1371     }
1372     $target{cast_asm_src}=$table{DEFAULTS}->{cast_asm_src} unless $disabled{pic}; # CAST assembler is not PIC
1373     if ($target{rmd160_asm_src}) {
1374         push @{$config{lib_defines}}, "RMD160_ASM";
1375     }
1376     if ($target{aes_asm_src}) {
1377         push @{$config{lib_defines}}, "AES_ASM" if ($target{aes_asm_src} =~ m/\baes-/);;
1378         # aes-ctr.fake is not a real file, only indication that assembler
1379         # module implements AES_ctr32_encrypt...
1380         push @{$config{lib_defines}}, "AES_CTR_ASM" if ($target{aes_asm_src} =~ s/\s*aes-ctr\.fake//);
1381         # aes-xts.fake indicates presence of AES_xts_[en|de]crypt...
1382         push @{$config{lib_defines}}, "AES_XTS_ASM" if ($target{aes_asm_src} =~ s/\s*aes-xts\.fake//);
1383         $target{aes_asm_src} =~ s/\s*(vpaes|aesni)-x86\.s//g if ($disabled{sse2});
1384         push @{$config{lib_defines}}, "VPAES_ASM" if ($target{aes_asm_src} =~ m/vpaes/);
1385         push @{$config{lib_defines}}, "BSAES_ASM" if ($target{aes_asm_src} =~ m/bsaes/);
1386     }
1387     if ($target{wp_asm_src} =~ /mmx/) {
1388         if ($config{processor} eq "386") {
1389             $target{wp_asm_src}=$table{DEFAULTS}->{wp_asm_src};
1390         } elsif (!$disabled{"whirlpool"}) {
1391             push @{$config{lib_defines}}, "WHIRLPOOL_ASM";
1392         }
1393     }
1394     if ($target{modes_asm_src} =~ /ghash-/) {
1395         push @{$config{lib_defines}}, "GHASH_ASM";
1396     }
1397     if ($target{ec_asm_src} =~ /ecp_nistz256/) {
1398         push @{$config{lib_defines}}, "ECP_NISTZ256_ASM";
1399     }
1400     if ($target{ec_asm_src} =~ /x25519/) {
1401         push @{$config{lib_defines}}, "X25519_ASM";
1402     }
1403     if ($target{padlock_asm_src} ne $table{DEFAULTS}->{padlock_asm_src}) {
1404         push @{$config{lib_defines}}, "PADLOCK_ASM";
1405     }
1406     if ($target{poly1305_asm_src} ne "") {
1407         push @{$config{lib_defines}}, "POLY1305_ASM";
1408     }
1409 }
1410
1411 my %predefined = compiler_predefined($config{CROSS_COMPILE}.$config{CC});
1412
1413 # Check for makedepend capabilities.
1414 if (!$disabled{makedepend}) {
1415     if ($config{target} =~ /^(VC|vms)-/) {
1416         # For VC- and vms- targets, there's nothing more to do here.  The
1417         # functionality is hard coded in the corresponding build files for
1418         # cl (Windows) and CC/DECC (VMS).
1419     } elsif (($predefined{__GNUC__} // -1) >= 3
1420              && !($predefined{__APPLE_CC__} && !$predefined{__clang__})) {
1421         # We know that GNU C version 3 and up as well as all clang
1422         # versions support dependency generation, but Xcode did not
1423         # handle $cc -M before clang support (but claims __GNUC__ = 3)
1424         $config{makedepprog} = "\$(CROSS_COMPILE)$config{CC}";
1425     } else {
1426         # In all other cases, we look for 'makedepend', and disable the
1427         # capability if not found.
1428         $config{makedepprog} = which('makedepend');
1429         $disabled{makedepend} = "unavailable" unless $config{makedepprog};
1430     }
1431 }
1432
1433 if (!$disabled{asm}) {
1434     # probe for -Wa,--noexecstack option...
1435     if ($predefined{__clang__}) {
1436         # clang has builtin assembler, which doesn't recognize --help,
1437         # but it apparently recognizes the option in question on all
1438         # supported platforms even when it's meaningless. In other words
1439         # probe would fail, but probed option always accepted...
1440         push @{$config{cflags}}, "-Wa,--noexecstack", "-Qunused-arguments";
1441     } elsif ($^O ne 'VMS') {
1442         my $cc = $config{CROSS_COMPILE}.$config{CC};
1443         open(PIPE, "$cc -Wa,--help -c -o null.$$.o -x assembler /dev/null 2>&1 |");
1444         while(<PIPE>) {
1445             if (m/--noexecstack/) {
1446                 push @{$config{cflags}}, "-Wa,--noexecstack";
1447                 last;
1448             }
1449         }
1450         close(PIPE);
1451         unlink("null.$$.o");
1452     }
1453 }
1454
1455 # Deal with bn_ops ###################################################
1456
1457 $config{bn_ll}                  =0;
1458 $config{export_var_as_fn}       =0;
1459 my $def_int="unsigned int";
1460 $config{rc4_int}                =$def_int;
1461 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
1462
1463 my $count = 0;
1464 foreach (sort split(/\s+/,$target{bn_ops})) {
1465     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
1466     $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
1467     $config{bn_ll}=1                            if $_ eq 'BN_LLONG';
1468     $config{rc4_int}="unsigned char"            if $_ eq 'RC4_CHAR';
1469     ($config{b64l},$config{b64},$config{b32})
1470         =(0,1,0)                                if $_ eq 'SIXTY_FOUR_BIT';
1471     ($config{b64l},$config{b64},$config{b32})
1472         =(1,0,0)                                if $_ eq 'SIXTY_FOUR_BIT_LONG';
1473     ($config{b64l},$config{b64},$config{b32})
1474         =(0,0,1)                                if $_ eq 'THIRTY_TWO_BIT';
1475 }
1476 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
1477     if $count > 1;
1478
1479
1480 # Hack cflags for better warnings (dev option) #######################
1481
1482 # "Stringify" the C and C++ flags string.  This permits it to be made part of
1483 # a string and works as well on command lines.
1484 $config{cflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
1485                         @{$config{cflags}} ];
1486 $config{cxxflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
1487                           @{$config{cxxflags}} ] if $config{CXX};
1488
1489 if (defined($config{api})) {
1490     $config{openssl_api_defines} = [ "OPENSSL_MIN_API=".$apitable->{$config{api}} ];
1491     my $apiflag = sprintf("OPENSSL_API_COMPAT=%s", $apitable->{$config{api}});
1492     push @{$config{defines}}, $apiflag;
1493 }
1494
1495 if ($strict_warnings)
1496         {
1497         my $wopt;
1498         my $gccver = $predefined{__GNUC__} // -1;
1499
1500         die "ERROR --strict-warnings requires gcc[>=4] or gcc-alike"
1501             unless $gccver >= 4;
1502         foreach $wopt (split /\s+/, $gcc_devteam_warn)
1503                 {
1504                 push @{$config{cflags}}, $wopt
1505                         unless grep { $_ eq $wopt } @{$config{cflags}};
1506                 push @{$config{cxxflags}}, $wopt
1507                         if ($config{CXX}
1508                             && !grep { $_ eq $wopt } @{$config{cxxflags}});
1509                 }
1510         if (defined($predefined{__clang__}))
1511                 {
1512                 foreach $wopt (split /\s+/, $clang_devteam_warn)
1513                         {
1514                         push @{$config{cflags}}, $wopt
1515                                 unless grep { $_ eq $wopt } @{$config{cflags}};
1516                         push @{$config{cxxflags}}, $wopt
1517                                 if ($config{CXX}
1518                                     && !grep { $_ eq $wopt } @{$config{cxxflags}});
1519                         }
1520                 }
1521         }
1522
1523 unless ($disabled{"crypto-mdebug-backtrace"})
1524         {
1525         foreach my $wopt (split /\s+/, $memleak_devteam_backtrace)
1526                 {
1527                 push @{$config{cflags}}, $wopt
1528                         unless grep { $_ eq $wopt } @{$config{cflags}};
1529                 push @{$config{cxxflags}}, $wopt
1530                         if ($config{CXX}
1531                             && !grep { $_ eq $wopt } @{$config{cxxflags}});
1532                 }
1533         if ($target =~ /^BSD-/)
1534                 {
1535                 push @{$config{ex_libs}}, "-lexecinfo";
1536                 }
1537         }
1538
1539 unless ($disabled{afalgeng}) {
1540     $config{afalgeng}="";
1541     if (grep { $_ eq 'afalgeng' } @{$target{enable}}) {
1542         my $minver = 4*10000 + 1*100 + 0;
1543         if ($config{CROSS_COMPILE} eq "") {
1544             my $verstr = `uname -r`;
1545             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
1546             ($mi2) = $mi2 =~ /(\d+)/;
1547             my $ver = $ma*10000 + $mi1*100 + $mi2;
1548             if ($ver < $minver) {
1549                 $disabled{afalgeng} = "too-old-kernel";
1550             } else {
1551                 push @{$config{engdirs}}, "afalg";
1552             }
1553         } else {
1554             $disabled{afalgeng} = "cross-compiling";
1555         }
1556     } else {
1557         $disabled{afalgeng}  = "not-linux";
1558     }
1559 }
1560
1561 push @{$config{openssl_other_defines}}, "OPENSSL_NO_AFALGENG" if ($disabled{afalgeng});
1562
1563 # Finish up %config by appending things the user gave us on the command line
1564 # apart from "make variables"
1565 foreach (keys %useradd) {
1566     # The must all be lists, so we assert that here
1567     die "internal error: \$useradd{$_} isn't an ARRAY\n"
1568         unless ref $useradd{$_} eq 'ARRAY';
1569
1570     if (defined $config{$_}) {
1571         push @{$config{$_}}, @{$useradd{$_}};
1572     } else {
1573         $config{$_} = [ @{$useradd{$_}} ];
1574     }
1575 }
1576
1577 # ALL MODIFICATIONS TO %config and %target MUST BE DONE FROM HERE ON
1578
1579 # If we use the unified build, collect information from build.info files
1580 my %unified_info = ();
1581
1582 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
1583 if ($builder eq "unified") {
1584     use with_fallback qw(Text::Template);
1585
1586     sub cleandir {
1587         my $base = shift;
1588         my $dir = shift;
1589         my $relativeto = shift || ".";
1590
1591         $dir = catdir($base,$dir) unless isabsolute($dir);
1592
1593         # Make sure the directories we're building in exists
1594         mkpath($dir);
1595
1596         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
1597         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
1598         return $res;
1599     }
1600
1601     sub cleanfile {
1602         my $base = shift;
1603         my $file = shift;
1604         my $relativeto = shift || ".";
1605
1606         $file = catfile($base,$file) unless isabsolute($file);
1607
1608         my $d = dirname($file);
1609         my $f = basename($file);
1610
1611         # Make sure the directories we're building in exists
1612         mkpath($d);
1613
1614         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
1615         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
1616         return $res;
1617     }
1618
1619     # Store the name of the template file we will build the build file from
1620     # in %config.  This may be useful for the build file itself.
1621     my @build_file_template_names =
1622         ( $builder_platform."-".$target{build_file}.".tmpl",
1623           $target{build_file}.".tmpl" );
1624     my @build_file_templates = ();
1625
1626     # First, look in the user provided directory, if given
1627     if (defined env($local_config_envname)) {
1628         @build_file_templates =
1629             map {
1630                 if ($^O eq 'VMS') {
1631                     # VMS environment variables are logical names,
1632                     # which can be used as is
1633                     $local_config_envname . ':' . $_;
1634                 } else {
1635                     catfile(env($local_config_envname), $_);
1636                 }
1637             }
1638             @build_file_template_names;
1639     }
1640     # Then, look in our standard directory
1641     push @build_file_templates,
1642         ( map { cleanfile($srcdir, catfile("Configurations", $_), $blddir) }
1643           @build_file_template_names );
1644
1645     my $build_file_template;
1646     for $_ (@build_file_templates) {
1647         $build_file_template = $_;
1648         last if -f $build_file_template;
1649
1650         $build_file_template = undef;
1651     }
1652     if (!defined $build_file_template) {
1653         die "*** Couldn't find any of:\n", join("\n", @build_file_templates), "\n";
1654     }
1655     $config{build_file_templates}
1656       = [ cleanfile($srcdir, catfile("Configurations", "common0.tmpl"),
1657                     $blddir),
1658           $build_file_template,
1659           cleanfile($srcdir, catfile("Configurations", "common.tmpl"),
1660                     $blddir) ];
1661
1662     my @build_infos = ( [ ".", "build.info" ] );
1663     foreach (@{$config{dirs}}) {
1664         push @build_infos, [ $_, "build.info" ]
1665             if (-f catfile($srcdir, $_, "build.info"));
1666     }
1667     foreach (@{$config{sdirs}}) {
1668         push @build_infos, [ catdir("crypto", $_), "build.info" ]
1669             if (-f catfile($srcdir, "crypto", $_, "build.info"));
1670     }
1671     foreach (@{$config{engdirs}}) {
1672         push @build_infos, [ catdir("engines", $_), "build.info" ]
1673             if (-f catfile($srcdir, "engines", $_, "build.info"));
1674     }
1675     foreach (@{$config{tdirs}}) {
1676         push @build_infos, [ catdir("test", $_), "build.info" ]
1677             if (-f catfile($srcdir, "test", $_, "build.info"));
1678     }
1679
1680     $config{build_infos} = [ ];
1681
1682     my %ordinals = ();
1683     foreach (@build_infos) {
1684         my $sourced = catdir($srcdir, $_->[0]);
1685         my $buildd = catdir($blddir, $_->[0]);
1686
1687         mkpath($buildd);
1688
1689         my $f = $_->[1];
1690         # The basic things we're trying to build
1691         my @programs = ();
1692         my @programs_install = ();
1693         my @libraries = ();
1694         my @libraries_install = ();
1695         my @engines = ();
1696         my @engines_install = ();
1697         my @scripts = ();
1698         my @scripts_install = ();
1699         my @extra = ();
1700         my @overrides = ();
1701         my @intermediates = ();
1702         my @rawlines = ();
1703
1704         my %sources = ();
1705         my %shared_sources = ();
1706         my %includes = ();
1707         my %depends = ();
1708         my %renames = ();
1709         my %sharednames = ();
1710         my %generate = ();
1711
1712         # We want to detect configdata.pm in the source tree, so we
1713         # don't use it if the build tree is different.
1714         my $src_configdata = cleanfile($srcdir, "configdata.pm", $blddir);
1715
1716         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
1717         my $template =
1718             Text::Template->new(TYPE => 'FILE',
1719                                 SOURCE => catfile($sourced, $f),
1720                                 PREPEND => qq{use lib "$FindBin::Bin/util/perl";});
1721         die "Something went wrong with $sourced/$f: $!\n" unless $template;
1722         my @text =
1723             split /^/m,
1724             $template->fill_in(HASH => { config => \%config,
1725                                          target => \%target,
1726                                          disabled => \%disabled,
1727                                          withargs => \%withargs,
1728                                          builddir => abs2rel($buildd, $blddir),
1729                                          sourcedir => abs2rel($sourced, $blddir),
1730                                          buildtop => abs2rel($blddir, $blddir),
1731                                          sourcetop => abs2rel($srcdir, $blddir) },
1732                                DELIMITERS => [ "{-", "-}" ]);
1733
1734         # The top item of this stack has the following values
1735         # -2 positive already run and we found ELSE (following ELSIF should fail)
1736         # -1 positive already run (skip until ENDIF)
1737         # 0 negatives so far (if we're at a condition, check it)
1738         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
1739         # 2 positive ELSE (following ELSIF should fail)
1740         my @skip = ();
1741         collect_information(
1742             collect_from_array([ @text ],
1743                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
1744                                                 $l1 =~ s/\\$//; $l1.$l2 }),
1745             # Info we're looking for
1746             qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
1747             => sub {
1748                 if (! @skip || $skip[$#skip] > 0) {
1749                     push @skip, !! $1;
1750                 } else {
1751                     push @skip, -1;
1752                 }
1753             },
1754             qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
1755             => sub { die "ELSIF out of scope" if ! @skip;
1756                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
1757                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
1758                      $skip[$#skip] = !! $1
1759                          if $skip[$#skip] == 0; },
1760             qr/^\s*ELSE\s*$/
1761             => sub { die "ELSE out of scope" if ! @skip;
1762                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
1763                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
1764             qr/^\s*ENDIF\s*$/
1765             => sub { die "ENDIF out of scope" if ! @skip;
1766                      pop @skip; },
1767             qr/^\s*PROGRAMS(_NO_INST)?\s*=\s*(.*)\s*$/
1768             => sub {
1769                 if (!@skip || $skip[$#skip] > 0) {
1770                     my $install = $1;
1771                     my @x = tokenize($2);
1772                     push @programs, @x;
1773                     push @programs_install, @x unless $install;
1774                 }
1775             },
1776             qr/^\s*LIBS(_NO_INST)?\s*=\s*(.*)\s*$/
1777             => sub {
1778                 if (!@skip || $skip[$#skip] > 0) {
1779                     my $install = $1;
1780                     my @x = tokenize($2);
1781                     push @libraries, @x;
1782                     push @libraries_install, @x unless $install;
1783                 }
1784             },
1785             qr/^\s*ENGINES(_NO_INST)?\s*=\s*(.*)\s*$/
1786             => sub {
1787                 if (!@skip || $skip[$#skip] > 0) {
1788                     my $install = $1;
1789                     my @x = tokenize($2);
1790                     push @engines, @x;
1791                     push @engines_install, @x unless $install;
1792                 }
1793             },
1794             qr/^\s*SCRIPTS(_NO_INST)?\s*=\s*(.*)\s*$/
1795             => sub {
1796                 if (!@skip || $skip[$#skip] > 0) {
1797                     my $install = $1;
1798                     my @x = tokenize($2);
1799                     push @scripts, @x;
1800                     push @scripts_install, @x unless $install;
1801                 }
1802             },
1803             qr/^\s*EXTRA\s*=\s*(.*)\s*$/
1804             => sub { push @extra, tokenize($1)
1805                          if !@skip || $skip[$#skip] > 0 },
1806             qr/^\s*OVERRIDES\s*=\s*(.*)\s*$/
1807             => sub { push @overrides, tokenize($1)
1808                          if !@skip || $skip[$#skip] > 0 },
1809
1810             qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
1811             => sub { push @{$ordinals{$1}}, tokenize($2)
1812                          if !@skip || $skip[$#skip] > 0 },
1813             qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1814             => sub { push @{$sources{$1}}, tokenize($2)
1815                          if !@skip || $skip[$#skip] > 0 },
1816             qr/^\s*SHARED_SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1817             => sub { push @{$shared_sources{$1}}, tokenize($2)
1818                          if !@skip || $skip[$#skip] > 0 },
1819             qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1820             => sub { push @{$includes{$1}}, tokenize($2)
1821                          if !@skip || $skip[$#skip] > 0 },
1822             qr/^\s*DEPEND\[((?:\\.|[^\\\]])*)\]\s*=\s*(.*)\s*$/
1823             => sub { push @{$depends{$1}}, tokenize($2)
1824                          if !@skip || $skip[$#skip] > 0 },
1825             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1826             => sub { push @{$generate{$1}}, $2
1827                          if !@skip || $skip[$#skip] > 0 },
1828             qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1829             => sub { push @{$renames{$1}}, tokenize($2)
1830                          if !@skip || $skip[$#skip] > 0 },
1831             qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1832             => sub { push @{$sharednames{$1}}, tokenize($2)
1833                          if !@skip || $skip[$#skip] > 0 },
1834             qr/^\s*BEGINRAW\[((?:\\.|[^\\\]])+)\]\s*$/
1835             => sub {
1836                 my $lineiterator = shift;
1837                 my $target_kind = $1;
1838                 while (defined $lineiterator->()) {
1839                     s|\R$||;
1840                     if (/^\s*ENDRAW\[((?:\\.|[^\\\]])+)\]\s*$/) {
1841                         die "ENDRAW doesn't match BEGINRAW"
1842                             if $1 ne $target_kind;
1843                         last;
1844                     }
1845                     next if @skip && $skip[$#skip] <= 0;
1846                     push @rawlines,  $_
1847                         if ($target_kind eq $target{build_file}
1848                             || $target_kind eq $target{build_file}."(".$builder_platform.")");
1849                 }
1850             },
1851             qr/^\s*(?:#.*)?$/ => sub { },
1852             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
1853             "BEFORE" => sub {
1854                 if ($buildinfo_debug) {
1855                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
1856                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1857                 }
1858             },
1859             "AFTER" => sub {
1860                 if ($buildinfo_debug) {
1861                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1862                 }
1863             },
1864             );
1865         die "runaway IF?" if (@skip);
1866
1867         foreach (keys %renames) {
1868             die "$_ renamed to more than one thing: "
1869                 ,join(" ", @{$renames{$_}}),"\n"
1870                 if scalar @{$renames{$_}} > 1;
1871             my $dest = cleanfile($buildd, $_, $blddir);
1872             my $to = cleanfile($buildd, $renames{$_}->[0], $blddir);
1873             die "$dest renamed to more than one thing: "
1874                 ,$unified_info{rename}->{$dest}, $to
1875                 unless !defined($unified_info{rename}->{$dest})
1876                 or $unified_info{rename}->{$dest} eq $to;
1877             $unified_info{rename}->{$dest} = $to;
1878         }
1879
1880         foreach (@programs) {
1881             my $program = cleanfile($buildd, $_, $blddir);
1882             if ($unified_info{rename}->{$program}) {
1883                 $program = $unified_info{rename}->{$program};
1884             }
1885             $unified_info{programs}->{$program} = 1;
1886         }
1887
1888         foreach (@programs_install) {
1889             my $program = cleanfile($buildd, $_, $blddir);
1890             if ($unified_info{rename}->{$program}) {
1891                 $program = $unified_info{rename}->{$program};
1892             }
1893             $unified_info{install}->{programs}->{$program} = 1;
1894         }
1895
1896         foreach (@libraries) {
1897             my $library = cleanfile($buildd, $_, $blddir);
1898             if ($unified_info{rename}->{$library}) {
1899                 $library = $unified_info{rename}->{$library};
1900             }
1901             $unified_info{libraries}->{$library} = 1;
1902         }
1903
1904         foreach (@libraries_install) {
1905             my $library = cleanfile($buildd, $_, $blddir);
1906             if ($unified_info{rename}->{$library}) {
1907                 $library = $unified_info{rename}->{$library};
1908             }
1909             $unified_info{install}->{libraries}->{$library} = 1;
1910         }
1911
1912         die <<"EOF" if scalar @engines and !$config{dynamic_engines};
1913 ENGINES can only be used if configured with 'dynamic-engine'.
1914 This is usually a fault in a build.info file.
1915 EOF
1916         foreach (@engines) {
1917             my $library = cleanfile($buildd, $_, $blddir);
1918             if ($unified_info{rename}->{$library}) {
1919                 $library = $unified_info{rename}->{$library};
1920             }
1921             $unified_info{engines}->{$library} = 1;
1922         }
1923
1924         foreach (@engines_install) {
1925             my $library = cleanfile($buildd, $_, $blddir);
1926             if ($unified_info{rename}->{$library}) {
1927                 $library = $unified_info{rename}->{$library};
1928             }
1929             $unified_info{install}->{engines}->{$library} = 1;
1930         }
1931
1932         foreach (@scripts) {
1933             my $script = cleanfile($buildd, $_, $blddir);
1934             if ($unified_info{rename}->{$script}) {
1935                 $script = $unified_info{rename}->{$script};
1936             }
1937             $unified_info{scripts}->{$script} = 1;
1938         }
1939
1940         foreach (@scripts_install) {
1941             my $script = cleanfile($buildd, $_, $blddir);
1942             if ($unified_info{rename}->{$script}) {
1943                 $script = $unified_info{rename}->{$script};
1944             }
1945             $unified_info{install}->{scripts}->{$script} = 1;
1946         }
1947
1948         foreach (@extra) {
1949             my $extra = cleanfile($buildd, $_, $blddir);
1950             $unified_info{extra}->{$extra} = 1;
1951         }
1952
1953         foreach (@overrides) {
1954             my $override = cleanfile($buildd, $_, $blddir);
1955             $unified_info{overrides}->{$override} = 1;
1956         }
1957
1958         push @{$unified_info{rawlines}}, @rawlines;
1959
1960         unless ($disabled{shared}) {
1961             # Check sharednames.
1962             foreach (keys %sharednames) {
1963                 my $dest = cleanfile($buildd, $_, $blddir);
1964                 if ($unified_info{rename}->{$dest}) {
1965                     $dest = $unified_info{rename}->{$dest};
1966                 }
1967                 die "shared_name for $dest with multiple values: "
1968                     ,join(" ", @{$sharednames{$_}}),"\n"
1969                     if scalar @{$sharednames{$_}} > 1;
1970                 my $to = cleanfile($buildd, $sharednames{$_}->[0], $blddir);
1971                 die "shared_name found for a library $dest that isn't defined\n"
1972                     unless $unified_info{libraries}->{$dest};
1973                 die "shared_name for $dest with multiple values: "
1974                     ,$unified_info{sharednames}->{$dest}, ", ", $to
1975                     unless !defined($unified_info{sharednames}->{$dest})
1976                     or $unified_info{sharednames}->{$dest} eq $to;
1977                 $unified_info{sharednames}->{$dest} = $to;
1978             }
1979
1980             # Additionally, we set up sharednames for libraries that don't
1981             # have any, as themselves.  Only for libraries that aren't
1982             # explicitly static.
1983             foreach (grep !/\.a$/, keys %{$unified_info{libraries}}) {
1984                 if (!defined $unified_info{sharednames}->{$_}) {
1985                     $unified_info{sharednames}->{$_} = $_
1986                 }
1987             }
1988
1989             # Check that we haven't defined any library as both shared and
1990             # explicitly static.  That is forbidden.
1991             my @doubles = ();
1992             foreach (grep /\.a$/, keys %{$unified_info{libraries}}) {
1993                 (my $l = $_) =~ s/\.a$//;
1994                 push @doubles, $l if defined $unified_info{sharednames}->{$l};
1995             }
1996             die "these libraries are both explicitly static and shared:\n  ",
1997                 join(" ", @doubles), "\n"
1998                 if @doubles;
1999         }
2000
2001         foreach (keys %sources) {
2002             my $dest = $_;
2003             my $ddest = cleanfile($buildd, $_, $blddir);
2004             if ($unified_info{rename}->{$ddest}) {
2005                 $ddest = $unified_info{rename}->{$ddest};
2006             }
2007             foreach (@{$sources{$dest}}) {
2008                 my $s = cleanfile($sourced, $_, $blddir);
2009
2010                 # If it isn't in the source tree, we assume it's generated
2011                 # in the build tree
2012                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
2013                     $s = cleanfile($buildd, $_, $blddir);
2014                 }
2015                 # We recognise C++, C and asm files
2016                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2017                     my $o = $_;
2018                     $o =~ s/\.[csS]$/.o/; # C and assembler
2019                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2020                     $o = cleanfile($buildd, $o, $blddir);
2021                     $unified_info{sources}->{$ddest}->{$o} = 1;
2022                     $unified_info{sources}->{$o}->{$s} = 1;
2023                 } elsif ($s =~ /\.rc$/) {
2024                     # We also recognise resource files
2025                     my $o = $_;
2026                     $o =~ s/\.rc$/.res/; # Resource configuration
2027                     my $o = cleanfile($buildd, $o, $blddir);
2028                     $unified_info{sources}->{$ddest}->{$o} = 1;
2029                     $unified_info{sources}->{$o}->{$s} = 1;
2030                 } else {
2031                     $unified_info{sources}->{$ddest}->{$s} = 1;
2032                 }
2033             }
2034         }
2035
2036         foreach (keys %shared_sources) {
2037             my $dest = $_;
2038             my $ddest = cleanfile($buildd, $_, $blddir);
2039             if ($unified_info{rename}->{$ddest}) {
2040                 $ddest = $unified_info{rename}->{$ddest};
2041             }
2042             foreach (@{$shared_sources{$dest}}) {
2043                 my $s = cleanfile($sourced, $_, $blddir);
2044
2045                 # If it isn't in the source tree, we assume it's generated
2046                 # in the build tree
2047                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
2048                     $s = cleanfile($buildd, $_, $blddir);
2049                 }
2050
2051                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2052                     # We recognise C++, C and asm files
2053                     my $o = $_;
2054                     $o =~ s/\.[csS]$/.o/; # C and assembler
2055                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2056                     $o = cleanfile($buildd, $o, $blddir);
2057                     $unified_info{shared_sources}->{$ddest}->{$o} = 1;
2058                     $unified_info{sources}->{$o}->{$s} = 1;
2059                 } elsif ($s =~ /\.rc$/) {
2060                     # We also recognise resource files
2061                     my $o = $_;
2062                     $o =~ s/\.rc$/.res/; # Resource configuration
2063                     my $o = cleanfile($buildd, $o, $blddir);
2064                     $unified_info{shared_sources}->{$ddest}->{$o} = 1;
2065                     $unified_info{sources}->{$o}->{$s} = 1;
2066                 } elsif ($s =~ /\.(def|map|opt)$/) {
2067                     # We also recognise .def / .map / .opt files
2068                     # We know they are generated files
2069                     my $def = cleanfile($buildd, $s, $blddir);
2070                     $unified_info{shared_sources}->{$ddest}->{$def} = 1;
2071                 } else {
2072                     die "unrecognised source file type for shared library: $s\n";
2073                 }
2074             }
2075         }
2076
2077         foreach (keys %generate) {
2078             my $dest = $_;
2079             my $ddest = cleanfile($buildd, $_, $blddir);
2080             if ($unified_info{rename}->{$ddest}) {
2081                 $ddest = $unified_info{rename}->{$ddest};
2082             }
2083             die "more than one generator for $dest: "
2084                     ,join(" ", @{$generate{$_}}),"\n"
2085                     if scalar @{$generate{$_}} > 1;
2086             my @generator = split /\s+/, $generate{$dest}->[0];
2087             $generator[0] = cleanfile($sourced, $generator[0], $blddir),
2088             $unified_info{generate}->{$ddest} = [ @generator ];
2089         }
2090
2091         foreach (keys %depends) {
2092             my $dest = $_;
2093             my $ddest = $dest eq "" ? "" : cleanfile($sourced, $_, $blddir);
2094
2095             # If the destination doesn't exist in source, it can only be
2096             # a generated file in the build tree.
2097             if ($ddest ne "" && ($ddest eq $src_configdata || ! -f $ddest)) {
2098                 $ddest = cleanfile($buildd, $_, $blddir);
2099                 if ($unified_info{rename}->{$ddest}) {
2100                     $ddest = $unified_info{rename}->{$ddest};
2101                 }
2102             }
2103             foreach (@{$depends{$dest}}) {
2104                 my $d = cleanfile($sourced, $_, $blddir);
2105
2106                 # If we know it's generated, or assume it is because we can't
2107                 # find it in the source tree, we set file we depend on to be
2108                 # in the build tree rather than the source tree, and assume
2109                 # and that there are lines to build it in a BEGINRAW..ENDRAW
2110                 # section or in the Makefile template.
2111                 if ($d eq $src_configdata
2112                     || ! -f $d
2113                     || (grep { $d eq $_ }
2114                         map { cleanfile($srcdir, $_, $blddir) }
2115                         grep { /\.h$/ } keys %{$unified_info{generate}})) {
2116                     $d = cleanfile($buildd, $_, $blddir);
2117                 }
2118                 # Take note if the file to depend on is being renamed
2119                 # Take extra care with files ending with .a, they should
2120                 # be treated without that extension, and the extension
2121                 # should be added back after treatment.
2122                 $d =~ /(\.a)?$/;
2123                 my $e = $1 // "";
2124                 $d = $`;
2125                 if ($unified_info{rename}->{$d}) {
2126                     $d = $unified_info{rename}->{$d};
2127                 }
2128                 $d .= $e;
2129                 $unified_info{depends}->{$ddest}->{$d} = 1;
2130             }
2131         }
2132
2133         foreach (keys %includes) {
2134             my $dest = $_;
2135             my $ddest = cleanfile($sourced, $_, $blddir);
2136
2137             # If the destination doesn't exist in source, it can only be
2138             # a generated file in the build tree.
2139             if ($ddest eq $src_configdata || ! -f $ddest) {
2140                 $ddest = cleanfile($buildd, $_, $blddir);
2141                 if ($unified_info{rename}->{$ddest}) {
2142                     $ddest = $unified_info{rename}->{$ddest};
2143                 }
2144             }
2145             foreach (@{$includes{$dest}}) {
2146                 my $is = cleandir($sourced, $_, $blddir);
2147                 my $ib = cleandir($buildd, $_, $blddir);
2148                 push @{$unified_info{includes}->{$ddest}->{source}}, $is
2149                     unless grep { $_ eq $is } @{$unified_info{includes}->{$ddest}->{source}};
2150                 push @{$unified_info{includes}->{$ddest}->{build}}, $ib
2151                     unless grep { $_ eq $ib } @{$unified_info{includes}->{$ddest}->{build}};
2152             }
2153         }
2154     }
2155
2156     my $ordinals_text = join(', ', sort keys %ordinals);
2157     warn <<"EOF" if $ordinals_text;
2158
2159 WARNING: ORDINALS were specified for $ordinals_text
2160 They are ignored and should be replaced with a combination of GENERATE,
2161 DEPEND and SHARED_SOURCE.
2162 EOF
2163
2164     # Massage the result
2165
2166     # If we depend on a header file or a perl module, add an inclusion of
2167     # its directory to allow smoothe inclusion
2168     foreach my $dest (keys %{$unified_info{depends}}) {
2169         next if $dest eq "";
2170         foreach my $d (keys %{$unified_info{depends}->{$dest}}) {
2171             next unless $d =~ /\.(h|pm)$/;
2172             my $i = dirname($d);
2173             my $spot =
2174                 $d eq "configdata.pm" || defined($unified_info{generate}->{$d})
2175                 ? 'build' : 'source';
2176             push @{$unified_info{includes}->{$dest}->{$spot}}, $i
2177                 unless grep { $_ eq $i } @{$unified_info{includes}->{$dest}->{$spot}};
2178         }
2179     }
2180
2181     # Trickle down includes placed on libraries, engines and programs to
2182     # their sources (i.e. object files)
2183     foreach my $dest (keys %{$unified_info{engines}},
2184                       keys %{$unified_info{libraries}},
2185                       keys %{$unified_info{programs}}) {
2186         foreach my $k (("source", "build")) {
2187             next unless defined($unified_info{includes}->{$dest}->{$k});
2188             my @incs = reverse @{$unified_info{includes}->{$dest}->{$k}};
2189             foreach my $obj (grep /\.o$/,
2190                              (keys %{$unified_info{sources}->{$dest}},
2191                               keys %{$unified_info{shared_sources}->{$dest}})) {
2192                 foreach my $inc (@incs) {
2193                     unshift @{$unified_info{includes}->{$obj}->{$k}}, $inc
2194                         unless grep { $_ eq $inc } @{$unified_info{includes}->{$obj}->{$k}};
2195                 }
2196             }
2197         }
2198         delete $unified_info{includes}->{$dest};
2199     }
2200
2201     ### Make unified_info a bit more efficient
2202     # One level structures
2203     foreach (("programs", "libraries", "engines", "scripts", "extra", "overrides")) {
2204         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
2205     }
2206     # Two level structures
2207     foreach my $l1 (("install", "sources", "shared_sources", "ldadd", "depends")) {
2208         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
2209             $unified_info{$l1}->{$l2} =
2210                 [ sort keys %{$unified_info{$l1}->{$l2}} ];
2211         }
2212     }
2213     # Includes
2214     foreach my $dest (sort keys %{$unified_info{includes}}) {
2215         if (defined($unified_info{includes}->{$dest}->{build})) {
2216             my @source_includes = ();
2217             @source_includes = ( @{$unified_info{includes}->{$dest}->{source}} )
2218                 if defined($unified_info{includes}->{$dest}->{source});
2219             $unified_info{includes}->{$dest} =
2220                 [ @{$unified_info{includes}->{$dest}->{build}} ];
2221             foreach my $inc (@source_includes) {
2222                 push @{$unified_info{includes}->{$dest}}, $inc
2223                     unless grep { $_ eq $inc } @{$unified_info{includes}->{$dest}};
2224             }
2225         } else {
2226             $unified_info{includes}->{$dest} =
2227                 [ @{$unified_info{includes}->{$dest}->{source}} ];
2228         }
2229     }
2230 }
2231
2232 # For the schemes that need it, we provide the old *_obj configs
2233 # from the *_asm_obj ones
2234 foreach (grep /_(asm|aux)_src$/, keys %target) {
2235     my $src = $_;
2236     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
2237     $target{$obj} = $target{$src};
2238     $target{$obj} =~ s/\.[csS]\b/.o/g; # C and assembler
2239     $target{$obj} =~ s/\.(cc|cpp)\b/_cc.o/g; # C++
2240 }
2241
2242 # Write down our configuration where it fits #########################
2243
2244 print "Creating configdata.pm\n";
2245 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
2246 print OUT <<"EOF";
2247 #! $config{HASHBANGPERL}
2248
2249 package configdata;
2250
2251 use strict;
2252 use warnings;
2253
2254 use Exporter;
2255 #use vars qw(\@ISA \@EXPORT);
2256 our \@ISA = qw(Exporter);
2257 our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables);
2258
2259 EOF
2260 print OUT "our %config = (\n";
2261 foreach (sort keys %config) {
2262     if (ref($config{$_}) eq "ARRAY") {
2263         print OUT "  ", $_, " => [ ", join(", ",
2264                                            map { quotify("perl", $_) }
2265                                            @{$config{$_}}), " ],\n";
2266     } elsif (ref($config{$_}) eq "HASH") {
2267         print OUT "  ", $_, " => {";
2268         if (scalar keys %{$config{$_}} > 0) {
2269             print OUT "\n";
2270             foreach my $key (sort keys %{$config{$_}}) {
2271                 print OUT "      ",
2272                     join(" => ",
2273                          quotify("perl", $key),
2274                          defined $config{$_}->{$key}
2275                              ? quotify("perl", $config{$_}->{$key})
2276                              : "undef");
2277                 print OUT ",\n";
2278             }
2279             print OUT "  ";
2280         }
2281         print OUT "},\n";
2282     } else {
2283         print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
2284     }
2285 }
2286 print OUT <<"EOF";
2287 );
2288
2289 EOF
2290 print OUT "our %target = (\n";
2291 foreach (sort keys %target) {
2292     if (ref($target{$_}) eq "ARRAY") {
2293         print OUT "  ", $_, " => [ ", join(", ",
2294                                            map { quotify("perl", $_) }
2295                                            @{$target{$_}}), " ],\n";
2296     } else {
2297         print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
2298     }
2299 }
2300 print OUT <<"EOF";
2301 );
2302
2303 EOF
2304 print OUT "our \%available_protocols = (\n";
2305 print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
2306 print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
2307 print OUT <<"EOF";
2308 );
2309
2310 EOF
2311 print OUT "our \@disablables = (\n";
2312 foreach (@disablables) {
2313     print OUT "  ", quotify("perl", $_), ",\n";
2314 }
2315 print OUT <<"EOF";
2316 );
2317
2318 EOF
2319 print OUT "our \%disabled = (\n";
2320 foreach (sort keys %disabled) {
2321     print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
2322 }
2323 print OUT <<"EOF";
2324 );
2325
2326 EOF
2327 print OUT "our %withargs = (\n";
2328 foreach (sort keys %withargs) {
2329     if (ref($withargs{$_}) eq "ARRAY") {
2330         print OUT "  ", $_, " => [ ", join(", ",
2331                                            map { quotify("perl", $_) }
2332                                            @{$withargs{$_}}), " ],\n";
2333     } else {
2334         print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
2335     }
2336 }
2337 print OUT <<"EOF";
2338 );
2339
2340 EOF
2341 if ($builder eq "unified") {
2342     my $recurse;
2343     $recurse = sub {
2344         my $indent = shift;
2345         foreach (@_) {
2346             if (ref $_ eq "ARRAY") {
2347                 print OUT " "x$indent, "[\n";
2348                 foreach (@$_) {
2349                     $recurse->($indent + 4, $_);
2350                 }
2351                 print OUT " "x$indent, "],\n";
2352             } elsif (ref $_ eq "HASH") {
2353                 my %h = %$_;
2354                 print OUT " "x$indent, "{\n";
2355                 foreach (sort keys %h) {
2356                     if (ref $h{$_} eq "") {
2357                         print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
2358                     } else {
2359                         print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
2360                         $recurse->($indent + 8, $h{$_});
2361                     }
2362                 }
2363                 print OUT " "x$indent, "},\n";
2364             } else {
2365                 print OUT " "x$indent, quotify("perl", $_), ",\n";
2366             }
2367         }
2368     };
2369     print OUT "our %unified_info = (\n";
2370     foreach (sort keys %unified_info) {
2371         if (ref $unified_info{$_} eq "") {
2372             print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
2373         } else {
2374             print OUT " "x4, quotify("perl", $_), " =>\n";
2375             $recurse->(8, $unified_info{$_});
2376         }
2377     }
2378     print OUT <<"EOF";
2379 );
2380
2381 EOF
2382 }
2383 print OUT
2384     "# The following data is only used when this files is use as a script\n";
2385 print OUT "my \@makevars = (\n";
2386 foreach (sort keys %user) {
2387     print OUT "    '",$_,"',\n";
2388 }
2389 print OUT ");\n";
2390 print OUT "my \%disabled_info = (\n";
2391 foreach my $what (sort keys %disabled_info) {
2392     print OUT "    '$what' => {\n";
2393     foreach my $info (sort keys %{$disabled_info{$what}}) {
2394         if (ref $disabled_info{$what}->{$info} eq 'ARRAY') {
2395             print OUT "        $info => [ ",
2396                 join(', ', map { "'$_'" } @{$disabled_info{$what}->{$info}}),
2397                 " ],\n";
2398         } else {
2399             print OUT "        $info => '", $disabled_info{$what}->{$info},
2400                 "',\n";
2401         }
2402     }
2403     print OUT "    },\n";
2404 }
2405 print OUT ");\n";
2406 print OUT 'my @user_crossable = qw( ', join (' ', @user_crossable), " );\n";
2407 print OUT << 'EOF';
2408 # If run directly, we can give some answers, and even reconfigure
2409 unless (caller) {
2410     use Getopt::Long;
2411     use File::Spec::Functions;
2412     use File::Basename;
2413     use Pod::Usage;
2414
2415     my $here = dirname($0);
2416
2417     my $dump = undef;
2418     my $cmdline = undef;
2419     my $options = undef;
2420     my $target = undef;
2421     my $envvars = undef;
2422     my $makevars = undef;
2423     my $buildparams = undef;
2424     my $reconf = undef;
2425     my $verbose = undef;
2426     my $help = undef;
2427     my $man = undef;
2428     GetOptions('dump|d'                 => \$dump,
2429                'command-line|c'         => \$cmdline,
2430                'options|o'              => \$options,
2431                'target|t'               => \$target,
2432                'environment|e'          => \$envvars,
2433                'make-variables|m'       => \$makevars,
2434                'build-parameters|b'     => \$buildparams,
2435                'reconfigure|reconf|r'   => \$reconf,
2436                'verbose|v'              => \$verbose,
2437                'help'                   => \$help,
2438                'man'                    => \$man)
2439         or die "Errors in command line arguments\n";
2440
2441     unless ($dump || $cmdline || $options || $target || $envvars || $makevars
2442             || $buildparams || $reconf || $verbose || $help || $man) {
2443         print STDERR <<"_____";
2444 You must give at least one option.
2445 For more information, do '$0 --help'
2446 _____
2447         exit(2);
2448     }
2449
2450     if ($help) {
2451         pod2usage(-exitval => 0,
2452                   -verbose => 1);
2453     }
2454     if ($man) {
2455         pod2usage(-exitval => 0,
2456                   -verbose => 2);
2457     }
2458     if ($dump || $cmdline) {
2459         print "\nCommand line (with current working directory = $here):\n\n";
2460         print '    ',join(' ',
2461                           $config{PERL},
2462                           catfile($config{sourcedir}, 'Configure'),
2463                           @{$config{perlargv}}), "\n";
2464         print "\nPerl information:\n\n";
2465         print '    ',$config{perl_cmd},"\n";
2466         print '    ',$config{perl_version},' for ',$config{perl_archname},"\n";
2467     }
2468     if ($dump || $options) {
2469         my $longest = 0;
2470         my $longest2 = 0;
2471         foreach my $what (@disablables) {
2472             $longest = length($what) if $longest < length($what);
2473             $longest2 = length($disabled{$what})
2474                 if $disabled{$what} && $longest2 < length($disabled{$what});
2475         }
2476         print "\nEnabled features:\n\n";
2477         foreach my $what (@disablables) {
2478             print "    $what\n" unless $disabled{$what};
2479         }
2480         print "\nDisabled features:\n\n";
2481         foreach my $what (@disablables) {
2482             if ($disabled{$what}) {
2483                 print "    $what", ' ' x ($longest - length($what) + 1),
2484                     "[$disabled{$what}]", ' ' x ($longest2 - length($disabled{$what}) + 1);
2485                 print $disabled_info{$what}->{macro}
2486                     if $disabled_info{$what}->{macro};
2487                 print ' (skip ',
2488                     join(', ', @{$disabled_info{$what}->{skipped}}),
2489                     ')'
2490                     if $disabled_info{$what}->{skipped};
2491                 print "\n";
2492             }
2493         }
2494     }
2495     if ($dump || $target) {
2496         print "\nConfig target attributes:\n\n";
2497         foreach (sort keys %target) {
2498             next if $_ =~ m|^_| || $_ eq 'template';
2499             my $quotify = sub {
2500                 map { (my $x = $_) =~ s|([\\\$\@"])|\\$1|g; "\"$x\""} @_;
2501             };
2502             print '    ', $_, ' => ';
2503             if (ref($target{$_}) eq "ARRAY") {
2504                 print '[ ', join(', ', $quotify->(@{$target{$_}})), " ],\n";
2505             } else {
2506                 print $quotify->($target{$_}), ",\n"
2507             }
2508         }
2509     }
2510     if ($dump || $envvars) {
2511         print "\nRecorded environment:\n\n";
2512         foreach (sort keys %{$config{perlenv}}) {
2513             print '    ',$_,' = ',($config{perlenv}->{$_} || ''),"\n";
2514         }
2515     }
2516     if ($dump || $makevars) {
2517         print "\nMakevars:\n\n";
2518         foreach my $var (@makevars) {
2519             my $prefix = '';
2520             $prefix = $config{CROSS_COMPILE}
2521                 if grep { $var eq $_ } @user_crossable;
2522             $prefix //= '';
2523             print '    ',$var,' ' x (16 - length $var),'= ',
2524                 (ref $config{$var} eq 'ARRAY'
2525                  ? join(' ', @{$config{$var}})
2526                  : $prefix.$config{$var}),
2527                 "\n"
2528                 if defined $config{$var};
2529         }
2530
2531         my @buildfile = ($config{builddir}, $config{build_file});
2532         unshift @buildfile, $here
2533             unless file_name_is_absolute($config{builddir});
2534         my $buildfile = canonpath(catdir(@buildfile));
2535         print <<"_____";
2536
2537 NOTE: These variables only represent the configuration view.  The build file
2538 template may have processed these variables further, please have a look at the
2539 build file for more exact data:
2540     $buildfile
2541 _____
2542     }
2543     if ($dump || $buildparams) {
2544         my @buildfile = ($config{builddir}, $config{build_file});
2545         unshift @buildfile, $here
2546             unless file_name_is_absolute($config{builddir});
2547         print "\nbuild file:\n\n";
2548         print "    ", canonpath(catfile(@buildfile)),"\n";
2549
2550         print "\nbuild file templates:\n\n";
2551         foreach (@{$config{build_file_templates}}) {
2552             my @tmpl = ($_);
2553             unshift @tmpl, $here
2554                 unless file_name_is_absolute($config{sourcedir});
2555             print '    ',canonpath(catfile(@tmpl)),"\n";
2556         }
2557     }
2558     if ($reconf) {
2559         if ($verbose) {
2560             print 'Reconfiguring with: ', join(' ',@{$config{perlargv}}), "\n";
2561             foreach (sort keys %{$config{perlenv}}) {
2562                 print '    ',$_,' = ',($config{perlenv}->{$_} || ""),"\n";
2563             }
2564         }
2565
2566         chdir $here;
2567         exec $^X,catfile($config{sourcedir}, 'Configure'),'reconf';
2568     }
2569 }
2570
2571 1;
2572
2573 __END__
2574
2575 =head1 NAME
2576
2577 configdata.pm - configuration data for OpenSSL builds
2578
2579 =head1 SYNOPSIS
2580
2581 Interactive:
2582
2583   perl configdata.pm [options]
2584
2585 As data bank module:
2586
2587   use configdata;
2588
2589 =head1 DESCRIPTION
2590
2591 This module can be used in two modes, interactively and as a module containing
2592 all the data recorded by OpenSSL's Configure script.
2593
2594 When used interactively, simply run it as any perl script, with at least one
2595 option, and you will get the information you ask for.  See L</OPTIONS> below.
2596
2597 When loaded as a module, you get a few databanks with useful information to
2598 perform build related tasks.  The databanks are:
2599
2600     %config             Configured things.
2601     %target             The OpenSSL config target with all inheritances
2602                         resolved.
2603     %disabled           The features that are disabled.
2604     @disablables        The list of features that can be disabled.
2605     %withargs           All data given through --with-THING options.
2606     %unified_info       All information that was computed from the build.info
2607                         files.
2608
2609 =head1 OPTIONS
2610
2611 =over 4
2612
2613 =item B<--help>
2614
2615 Print a brief help message and exit.
2616
2617 =item B<--man>
2618
2619 Print the manual page and exit.
2620
2621 =item B<--dump> | B<-d>
2622
2623 Print all relevant configuration data.  This is equivalent to B<--command-line>
2624 B<--options> B<--target> B<--environment> B<--make-variables>
2625 B<--build-parameters>.
2626
2627 =item B<--command-line> | B<-c>
2628
2629 Print the current configuration command line.
2630
2631 =item B<--options> | B<-o>
2632
2633 Print the features, both enabled and disabled, and display defined macro and
2634 skipped directories where applicable.
2635
2636 =item B<--target> | B<-t>
2637
2638 Print the config attributes for this config target.
2639
2640 =item B<--environment> | B<-e>
2641
2642 Print the environment variables and their values at the time of configuration.
2643
2644 =item B<--make-variables> | B<-m>
2645
2646 Print the main make variables generated in the current configuration
2647
2648 =item B<--build-parameters> | B<-b>
2649
2650 Print the build parameters, i.e. build file and build file templates.
2651
2652 =item B<--reconfigure> | B<--reconf> | B<-r>
2653
2654 Redo the configuration.
2655
2656 =item B<--verbose> | B<-v>
2657
2658 Verbose output.
2659
2660 =back
2661
2662 =cut
2663
2664 EOF
2665 close(OUT);
2666 if ($builder_platform eq 'unix') {
2667     my $mode = (0755 & ~umask);
2668     chmod $mode, 'configdata.pm'
2669         or warn sprintf("WARNING: Couldn't change mode for 'configdata.pm' to 0%03o: %s\n",$mode,$!);
2670 }
2671
2672 my %builders = (
2673     unified => sub {
2674         print 'Creating ',$target{build_file},"\n";
2675         run_dofile(catfile($blddir, $target{build_file}),
2676                    @{$config{build_file_templates}});
2677     },
2678     );
2679
2680 $builders{$builder}->($builder_platform, @builder_opts);
2681
2682 print <<"EOF" if ($disabled{threads} eq "unavailable");
2683
2684 The library could not be configured for supporting multi-threaded
2685 applications as the compiler options required on this system are not known.
2686 See file INSTALL for details if you need multi-threading.
2687 EOF
2688
2689 print <<"EOF" if ($no_shared_warn);
2690
2691 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
2692 platform, so we will pretend you gave the option 'no-pic', which also disables
2693 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
2694 or position independent code, please let us know (but please first make sure
2695 you have tried with a current version of OpenSSL).
2696 EOF
2697
2698 print <<"EOF";
2699
2700 **********************************************************************
2701 ***                                                                ***
2702 ***   If you want to report a building issue, please include the   ***
2703 ***   output from this command:                                    ***
2704 ***                                                                ***
2705 ***     perl configdata.pm --dump                                  ***
2706 ***                                                                ***
2707 **********************************************************************
2708 EOF
2709
2710 exit(0);
2711
2712 ######################################################################
2713 #
2714 # Helpers and utility functions
2715 #
2716
2717 # Configuration file reading #########################################
2718
2719 # Note: All of the helper functions are for lazy evaluation.  They all
2720 # return a CODE ref, which will return the intended value when evaluated.
2721 # Thus, whenever there's mention of a returned value, it's about that
2722 # intended value.
2723
2724 # Helper function to implement conditional inheritance depending on the
2725 # value of $disabled{asm}.  Used in inherit_from values as follows:
2726 #
2727 #      inherit_from => [ "template", asm("asm_tmpl") ]
2728 #
2729 sub asm {
2730     my @x = @_;
2731     sub {
2732         $disabled{asm} ? () : @x;
2733     }
2734 }
2735
2736 # Helper function to implement conditional value variants, with a default
2737 # plus additional values based on the value of $config{build_type}.
2738 # Arguments are given in hash table form:
2739 #
2740 #       picker(default => "Basic string: ",
2741 #              debug   => "debug",
2742 #              release => "release")
2743 #
2744 # When configuring with --debug, the resulting string will be
2745 # "Basic string: debug", and when not, it will be "Basic string: release"
2746 #
2747 # This can be used to create variants of sets of flags according to the
2748 # build type:
2749 #
2750 #       cflags => picker(default => "-Wall",
2751 #                        debug   => "-g -O0",
2752 #                        release => "-O3")
2753 #
2754 sub picker {
2755     my %opts = @_;
2756     return sub { add($opts{default} || (),
2757                      $opts{$config{build_type}} || ())->(); }
2758 }
2759
2760 # Helper function to combine several values of different types into one.
2761 # This is useful if you want to combine a string with the result of a
2762 # lazy function, such as:
2763 #
2764 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
2765 #
2766 sub combine {
2767     my @stuff = @_;
2768     return sub { add(@stuff)->(); }
2769 }
2770
2771 # Helper function to implement conditional values depending on the value
2772 # of $disabled{threads}.  Can be used as follows:
2773 #
2774 #       cflags => combine("-Wall", threads("-pthread"))
2775 #
2776 sub threads {
2777     my @flags = @_;
2778     return sub { add($disabled{threads} ? () : @flags)->(); }
2779 }
2780
2781 sub shared {
2782     my @flags = @_;
2783     return sub { add($disabled{shared} ? () : @flags)->(); }
2784 }
2785
2786 our $add_called = 0;
2787 # Helper function to implement adding values to already existing configuration
2788 # values.  It handles elements that are ARRAYs, CODEs and scalars
2789 sub _add {
2790     my $separator = shift;
2791
2792     # If there's any ARRAY in the collection of values OR the separator
2793     # is undef, we will return an ARRAY of combined values, otherwise a
2794     # string of joined values with $separator as the separator.
2795     my $found_array = !defined($separator);
2796
2797     my @values =
2798         map {
2799             my $res = $_;
2800             while (ref($res) eq "CODE") {
2801                 $res = $res->();
2802             }
2803             if (defined($res)) {
2804                 if (ref($res) eq "ARRAY") {
2805                     $found_array = 1;
2806                     @$res;
2807                 } else {
2808                     $res;
2809                 }
2810             } else {
2811                 ();
2812             }
2813     } (@_);
2814
2815     $add_called = 1;
2816
2817     if ($found_array) {
2818         [ @values ];
2819     } else {
2820         join($separator, grep { defined($_) && $_ ne "" } @values);
2821     }
2822 }
2823 sub add_before {
2824     my $separator = " ";
2825     if (ref($_[$#_]) eq "HASH") {
2826         my $opts = pop;
2827         $separator = $opts->{separator};
2828     }
2829     my @x = @_;
2830     sub { _add($separator, @x, @_) };
2831 }
2832 sub add {
2833     my $separator = " ";
2834     if (ref($_[$#_]) eq "HASH") {
2835         my $opts = pop;
2836         $separator = $opts->{separator};
2837     }
2838     my @x = @_;
2839     sub { _add($separator, @_, @x) };
2840 }
2841
2842 sub read_eval_file {
2843     my $fname = shift;
2844     my $content;
2845     my @result;
2846
2847     open F, "< $fname" or die "Can't open '$fname': $!\n";
2848     {
2849         undef local $/;
2850         $content = <F>;
2851     }
2852     close F;
2853     {
2854         local $@;
2855
2856         @result = ( eval $content );
2857         warn $@ if $@;
2858     }
2859     return wantarray ? @result : $result[0];
2860 }
2861
2862 # configuration reader, evaluates the input file as a perl script and expects
2863 # it to fill %targets with target configurations.  Those are then added to
2864 # %table.
2865 sub read_config {
2866     my $fname = shift;
2867     my %targets;
2868
2869     {
2870         # Protect certain tables from tampering
2871         local %table = ();
2872
2873         %targets = read_eval_file($fname);
2874     }
2875     my %preexisting = ();
2876     foreach (sort keys %targets) {
2877         $preexisting{$_} = 1 if $table{$_};
2878     }
2879     die <<"EOF",
2880 The following config targets from $fname
2881 shadow pre-existing config targets with the same name:
2882 EOF
2883         map { "  $_\n" } sort keys %preexisting
2884         if %preexisting;
2885
2886
2887     # For each target, check that it's configured with a hash table.
2888     foreach (keys %targets) {
2889         if (ref($targets{$_}) ne "HASH") {
2890             if (ref($targets{$_}) eq "") {
2891                 warn "Deprecated target configuration for $_, ignoring...\n";
2892             } else {
2893                 warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
2894             }
2895             delete $targets{$_};
2896         } else {
2897             $targets{$_}->{_conf_fname_int} = add([ $fname ]);
2898         }
2899     }
2900
2901     %table = (%table, %targets);
2902
2903 }
2904
2905 # configuration resolver.  Will only resolve all the lazy evaluation
2906 # codeblocks for the chosen target and all those it inherits from,
2907 # recursively
2908 sub resolve_config {
2909     my $target = shift;
2910     my @breadcrumbs = @_;
2911
2912 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
2913
2914     if (grep { $_ eq $target } @breadcrumbs) {
2915         die "inherit_from loop!  target backtrace:\n  "
2916             ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
2917     }
2918
2919     if (!defined($table{$target})) {
2920         warn "Warning! target $target doesn't exist!\n";
2921         return ();
2922     }
2923     # Recurse through all inheritances.  They will be resolved on the
2924     # fly, so when this operation is done, they will all just be a
2925     # bunch of attributes with string values.
2926     # What we get here, though, are keys with references to lists of
2927     # the combined values of them all.  We will deal with lists after
2928     # this stage is done.
2929     my %combined_inheritance = ();
2930     if ($table{$target}->{inherit_from}) {
2931         my @inherit_from =
2932             map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
2933         foreach (@inherit_from) {
2934             my %inherited_config = resolve_config($_, $target, @breadcrumbs);
2935
2936             # 'template' is a marker that's considered private to
2937             # the config that had it.
2938             delete $inherited_config{template};
2939
2940             foreach (keys %inherited_config) {
2941                 if (!$combined_inheritance{$_}) {
2942                     $combined_inheritance{$_} = [];
2943                 }
2944                 push @{$combined_inheritance{$_}}, $inherited_config{$_};
2945             }
2946         }
2947     }
2948
2949     # We won't need inherit_from in this target any more, since we've
2950     # resolved all the inheritances that lead to this
2951     delete $table{$target}->{inherit_from};
2952
2953     # Now is the time to deal with those lists.  Here's the place to
2954     # decide what shall be done with those lists, all based on the
2955     # values of the target we're currently dealing with.
2956     # - If a value is a coderef, it will be executed with the list of
2957     #   inherited values as arguments.
2958     # - If the corresponding key doesn't have a value at all or is the
2959     #   empty string, the inherited value list will be run through the
2960     #   default combiner (below), and the result becomes this target's
2961     #   value.
2962     # - Otherwise, this target's value is assumed to be a string that
2963     #   will simply override the inherited list of values.
2964     my $default_combiner = add();
2965
2966     my %all_keys =
2967         map { $_ => 1 } (keys %combined_inheritance,
2968                          keys %{$table{$target}});
2969
2970     sub process_values {
2971         my $object    = shift;
2972         my $inherited = shift;  # Always a [ list ]
2973         my $target    = shift;
2974         my $entry     = shift;
2975
2976         $add_called = 0;
2977
2978         while(ref($object) eq "CODE") {
2979             $object = $object->(@$inherited);
2980         }
2981         if (!defined($object)) {
2982             return ();
2983         }
2984         elsif (ref($object) eq "ARRAY") {
2985             local $add_called;  # To make sure recursive calls don't affect it
2986             return [ map { process_values($_, $inherited, $target, $entry) }
2987                      @$object ];
2988         } elsif (ref($object) eq "") {
2989             return $object;
2990         } else {
2991             die "cannot handle reference type ",ref($object)
2992                 ," found in target ",$target," -> ",$entry,"\n";
2993         }
2994     }
2995
2996     foreach (sort keys %all_keys) {
2997         my $previous = $combined_inheritance{$_};
2998
2999         # Current target doesn't have a value for the current key?
3000         # Assign it the default combiner, the rest of this loop body
3001         # will handle it just like any other coderef.
3002         if (!exists $table{$target}->{$_}) {
3003             $table{$target}->{$_} = $default_combiner;
3004         }
3005
3006         $table{$target}->{$_} = process_values($table{$target}->{$_},
3007                                                $combined_inheritance{$_},
3008                                                $target, $_);
3009         unless(defined($table{$target}->{$_})) {
3010             delete $table{$target}->{$_};
3011         }
3012 #        if ($extra_checks &&
3013 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
3014 #            warn "$_ got replaced in $target\n";
3015 #        }
3016     }
3017
3018     # Finally done, return the result.
3019     return %{$table{$target}};
3020 }
3021
3022 sub usage
3023         {
3024         print STDERR $usage;
3025         print STDERR "\npick os/compiler from:\n";
3026         my $j=0;
3027         my $i;
3028         my $k=0;
3029         foreach $i (sort keys %table)
3030                 {
3031                 next if $table{$i}->{template};
3032                 next if $i =~ /^debug/;
3033                 $k += length($i) + 1;
3034                 if ($k > 78)
3035                         {
3036                         print STDERR "\n";
3037                         $k=length($i);
3038                         }
3039                 print STDERR $i . " ";
3040                 }
3041         foreach $i (sort keys %table)
3042                 {
3043                 next if $table{$i}->{template};
3044                 next if $i !~ /^debug/;
3045                 $k += length($i) + 1;
3046                 if ($k > 78)
3047                         {
3048                         print STDERR "\n";
3049                         $k=length($i);
3050                         }
3051                 print STDERR $i . " ";
3052                 }
3053         print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
3054         exit(1);
3055         }
3056
3057 sub run_dofile
3058 {
3059     my $out = shift;
3060     my @templates = @_;
3061
3062     unlink $out || warn "Can't remove $out, $!"
3063         if -f $out;
3064     foreach (@templates) {
3065         die "Can't open $_, $!" unless -f $_;
3066     }
3067     my $perlcmd = (quotify("maybeshell", $config{PERL}))[0];
3068     my $cmd = "$perlcmd \"-I.\" \"-Mconfigdata\" \"$dofile\" -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
3069     #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
3070     system($cmd);
3071     exit 1 if $? != 0;
3072     rename("$out.new", $out) || die "Can't rename $out.new, $!";
3073 }
3074
3075 sub compiler_predefined {
3076     state %predefined;
3077     my $cc = shift;
3078
3079     return () if $^O eq 'VMS';
3080
3081     die 'compiler_predefined called without a compiler command'
3082         unless $cc;
3083
3084     if (! $predefined{$cc}) {
3085
3086         $predefined{$cc} = {};
3087
3088         # collect compiler pre-defines from gcc or gcc-alike...
3089         open(PIPE, "$cc -dM -E -x c /dev/null 2>&1 |");
3090         while (my $l = <PIPE>) {
3091             $l =~ m/^#define\s+(\w+(?:\(\w+\))?)(?:\s+(.+))?/ or last;
3092             $predefined{$cc}->{$1} = $2 // '';
3093         }
3094         close(PIPE);
3095     }
3096
3097     return %{$predefined{$cc}};
3098 }
3099
3100 sub which
3101 {
3102     my ($name)=@_;
3103
3104     if (eval { require IPC::Cmd; 1; }) {
3105         IPC::Cmd->import();
3106         return scalar IPC::Cmd::can_run($name);
3107     } else {
3108         # if there is $directories component in splitpath,
3109         # then it's not something to test with $PATH...
3110         return $name if (File::Spec->splitpath($name))[1];
3111
3112         foreach (File::Spec->path()) {
3113             my $fullpath = catfile($_, "$name$target{exe_extension}");
3114             if (-f $fullpath and -x $fullpath) {
3115                 return $fullpath;
3116             }
3117         }
3118     }
3119 }
3120
3121 sub env
3122 {
3123     my $name = shift;
3124     my %opts = @_;
3125
3126     unless ($opts{cacheonly}) {
3127         # Note that if $ENV{$name} doesn't exist or is undefined,
3128         # $config{perlenv}->{$name} will be created with the value
3129         # undef.  This is intentional.
3130
3131         $config{perlenv}->{$name} = $ENV{$name}
3132             if ! exists $config{perlenv}->{$name};
3133     }
3134     return $config{perlenv}->{$name};
3135 }
3136
3137 # Configuration printer ##############################################
3138
3139 sub print_table_entry
3140 {
3141     local $now_printing = shift;
3142     my %target = resolve_config($now_printing);
3143     my $type = shift;
3144
3145     # Don't print the templates
3146     return if $target{template};
3147
3148     my @sequence = (
3149         "sys_id",
3150         "cpp",
3151         "cppflags",
3152         "defines",
3153         "includes",
3154         "cc",
3155         "cflags",
3156         "unistd",
3157         "ld",
3158         "lflags",
3159         "loutflag",
3160         "ex_libs",
3161         "bn_ops",
3162         "apps_aux_src",
3163         "cpuid_asm_src",
3164         "uplink_aux_src",
3165         "bn_asm_src",
3166         "ec_asm_src",
3167         "des_asm_src",
3168         "aes_asm_src",
3169         "bf_asm_src",
3170         "md5_asm_src",
3171         "cast_asm_src",
3172         "sha1_asm_src",
3173         "rc4_asm_src",
3174         "rmd160_asm_src",
3175         "rc5_asm_src",
3176         "wp_asm_src",
3177         "cmll_asm_src",
3178         "modes_asm_src",
3179         "padlock_asm_src",
3180         "chacha_asm_src",
3181         "poly1035_asm_src",
3182         "thread_scheme",
3183         "perlasm_scheme",
3184         "dso_scheme",
3185         "shared_target",
3186         "shared_cflag",
3187         "shared_defines",
3188         "shared_ldflag",
3189         "shared_rcflag",
3190         "shared_extension",
3191         "dso_extension",
3192         "obj_extension",
3193         "exe_extension",
3194         "ranlib",
3195         "ar",
3196         "arflags",
3197         "aroutflag",
3198         "rc",
3199         "rcflags",
3200         "rcoutflag",
3201         "mt",
3202         "mtflags",
3203         "mtinflag",
3204         "mtoutflag",
3205         "multilib",
3206         "build_scheme",
3207         );
3208
3209     if ($type eq "TABLE") {
3210         print "\n";
3211         print "*** $now_printing\n";
3212         foreach (@sequence) {
3213             if (ref($target{$_}) eq "ARRAY") {
3214                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
3215             } else {
3216                 printf "\$%-12s = %s\n", $_, $target{$_};
3217             }
3218         }
3219     } elsif ($type eq "HASH") {
3220         my $largest =
3221             length((sort { length($a) <=> length($b) } @sequence)[-1]);
3222         print "    '$now_printing' => {\n";
3223         foreach (@sequence) {
3224             if ($target{$_}) {
3225                 if (ref($target{$_}) eq "ARRAY") {
3226                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
3227                 } else {
3228                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
3229                 }
3230             }
3231         }
3232         print "    },\n";
3233     }
3234 }
3235
3236 # Utility routines ###################################################
3237
3238 # On VMS, if the given file is a logical name, File::Spec::Functions
3239 # will consider it an absolute path.  There are cases when we want a
3240 # purely syntactic check without checking the environment.
3241 sub isabsolute {
3242     my $file = shift;
3243
3244     # On non-platforms, we just use file_name_is_absolute().
3245     return file_name_is_absolute($file) unless $^O eq "VMS";
3246
3247     # If the file spec includes a device or a directory spec,
3248     # file_name_is_absolute() is perfectly safe.
3249     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
3250
3251     # Here, we know the given file spec isn't absolute
3252     return 0;
3253 }
3254
3255 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
3256 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
3257 # realpath() requires that at least all path components except the last is an
3258 # existing directory.  On VMS, the last component of the directory spec must
3259 # exist.
3260 sub absolutedir {
3261     my $dir = shift;
3262
3263     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
3264     # will return the volume name for the device, no matter what.  Also,
3265     # it will return an incorrect directory spec if the argument is a
3266     # directory that doesn't exist.
3267     if ($^O eq "VMS") {
3268         return rel2abs($dir);
3269     }
3270
3271     # We use realpath() on Unix, since no other will properly clean out
3272     # a directory spec.
3273     use Cwd qw/realpath/;
3274
3275     return realpath($dir);
3276 }
3277
3278 sub quotify {
3279     my %processors = (
3280         perl    => sub { my $x = shift;
3281                          $x =~ s/([\\\$\@"])/\\$1/g;
3282                          return '"'.$x.'"'; },
3283         maybeshell => sub { my $x = shift;
3284                             (my $y = $x) =~ s/([\\\"])/\\$1/g;
3285                             if ($x ne $y || $x =~ m|\s|) {
3286                                 return '"'.$y.'"';
3287                             } else {
3288                                 return $x;
3289                             }
3290                         },
3291         );
3292     my $for = shift;
3293     my $processor =
3294         defined($processors{$for}) ? $processors{$for} : sub { shift; };
3295
3296     return map { $processor->($_); } @_;
3297 }
3298
3299 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
3300 # $filename is a file name to read from
3301 # $line_concat_cond_re is a regexp detecting a line continuation ending
3302 # $line_concat is a CODEref that takes care of concatenating two lines
3303 sub collect_from_file {
3304     my $filename = shift;
3305     my $line_concat_cond_re = shift;
3306     my $line_concat = shift;
3307
3308     open my $fh, $filename || die "unable to read $filename: $!\n";
3309     return sub {
3310         my $saved_line = "";
3311         $_ = "";
3312         while (<$fh>) {
3313             s|\R$||;
3314             if (defined $line_concat) {
3315                 $_ = $line_concat->($saved_line, $_);
3316                 $saved_line = "";
3317             }
3318             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3319                 $saved_line = $_;
3320                 next;
3321             }
3322             return $_;
3323         }
3324         die "$filename ending with continuation line\n" if $_;
3325         close $fh;
3326         return undef;
3327     }
3328 }
3329
3330 # collect_from_array($array, $line_concat_cond_re, $line_concat)
3331 # $array is an ARRAYref of lines
3332 # $line_concat_cond_re is a regexp detecting a line continuation ending
3333 # $line_concat is a CODEref that takes care of concatenating two lines
3334 sub collect_from_array {
3335     my $array = shift;
3336     my $line_concat_cond_re = shift;
3337     my $line_concat = shift;
3338     my @array = (@$array);
3339
3340     return sub {
3341         my $saved_line = "";
3342         $_ = "";
3343         while (defined($_ = shift @array)) {
3344             s|\R$||;
3345             if (defined $line_concat) {
3346                 $_ = $line_concat->($saved_line, $_);
3347                 $saved_line = "";
3348             }
3349             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3350                 $saved_line = $_;
3351                 next;
3352             }
3353             return $_;
3354         }
3355         die "input text ending with continuation line\n" if $_;
3356         return undef;
3357     }
3358 }
3359
3360 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
3361 # $lineiterator is a CODEref that delivers one line at a time.
3362 # All following arguments are regex/CODEref pairs, where the regexp detects a
3363 # line and the CODEref does something with the result of the regexp.
3364 sub collect_information {
3365     my $lineiterator = shift;
3366     my %collectors = @_;
3367
3368     while(defined($_ = $lineiterator->())) {
3369         s|\R$||;
3370         my $found = 0;
3371         if ($collectors{"BEFORE"}) {
3372             $collectors{"BEFORE"}->($_);
3373         }
3374         foreach my $re (keys %collectors) {
3375             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
3376                 $collectors{$re}->($lineiterator);
3377                 $found = 1;
3378             };
3379         }
3380         if ($collectors{"OTHERWISE"}) {
3381             $collectors{"OTHERWISE"}->($lineiterator, $_)
3382                 unless $found || !defined $collectors{"OTHERWISE"};
3383         }
3384         if ($collectors{"AFTER"}) {
3385             $collectors{"AFTER"}->($_);
3386         }
3387     }
3388 }
3389
3390 # tokenize($line)
3391 # $line is a line of text to split up into tokens
3392 # returns a list of tokens
3393 #
3394 # Tokens are divided by spaces.  If the tokens include spaces, they
3395 # have to be quoted with single or double quotes.  Double quotes
3396 # inside a double quoted token must be escaped.  Escaping is done
3397 # with backslash.
3398 # Basically, the same quoting rules apply for " and ' as in any
3399 # Unix shell.
3400 sub tokenize {
3401     my $line = my $debug_line = shift;
3402     my @result = ();
3403
3404     while ($line =~ s|^\s+||, $line ne "") {
3405         my $token = "";
3406         while ($line ne "" && $line !~ m|^\s|) {
3407             if ($line =~ m/^"((?:[^"\\]+|\\.)*)"/) {
3408                 $token .= $1;
3409                 $line = $';
3410             } elsif ($line =~ m/^'([^']*)'/) {
3411                 $token .= $1;
3412                 $line = $';
3413             } elsif ($line =~ m/^(\S+)/) {
3414                 $token .= $1;
3415                 $line = $';
3416             }
3417         }
3418         push @result, $token;
3419     }
3420
3421     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
3422         print STDERR "DEBUG[tokenize]: Parsed '$debug_line' into:\n";
3423         print STDERR "DEBUG[tokenize]: ('", join("', '", @result), "')\n";
3424     }
3425     return @result;
3426 }