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