Configure

   1 #! /usr/bin/env perl
   2 # -*- mode: perl; -*-
   3 # Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
   4 #
   5 # Licensed under the Apache License 2.0 (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 "$FindBin::Bin/util/perl";
  17 use File::Basename;
  18 use File::Spec::Functions qw/:DEFAULT abs2rel rel2abs splitdir/;
  19 use File::Path qw/mkpath/;
  20 use OpenSSL::fallback "$FindBin::Bin/external/perl/MODULES.txt";
  21 use OpenSSL::Glob;
  22 use OpenSSL::Template;
  23 use OpenSSL::config;
  24
  25 # see INSTALL.md for instructions.
  26
  27 my $orig_death_handler = $SIG{__DIE__};
  28 $SIG{__DIE__} = \&death_handler;
  29
  30 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-egd] [sctp] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--with-xxx[=vvv]] [--config=FILE] os/compiler[:flags]\n";
  31
  32 # Options:
  33 #
  34 # --config      add the given configuration file, which will be read after
  35 #               any "Configurations*" files that are found in the same
  36 #               directory as this script.
  37 # --prefix      prefix for the OpenSSL installation, which includes the
  38 #               directories bin, lib, include, share/man, share/doc/openssl
  39 #               This becomes the value of INSTALLTOP in Makefile
  40 #               (Default: /usr/local)
  41 # --openssldir  OpenSSL data area, such as openssl.cnf, certificates and keys.
  42 #               If it's a relative directory, it will be added on the directory
  43 #               given with --prefix.
  44 #               This becomes the value of OPENSSLDIR in Makefile and in C.
  45 #               (Default: PREFIX/ssl)
  46 #
  47 # --cross-compile-prefix Add specified prefix to binutils components.
  48 #
  49 # --api         One of 0.9.8, 1.0.0, 1.0.1, 1.0.2, 1.1.0, 1.1.1, or 3.0
  50 #               Define the public APIs as they were for that version
  51 #               including patch releases.  If 'no-deprecated' is also
  52 #               given, do not compile support for interfaces deprecated
  53 #               up to and including the specified OpenSSL version.
  54 #
  55 # no-hw-xxx     do not compile support for specific crypto hardware.
  56 #               Generic OpenSSL-style methods relating to this support
  57 #               are always compiled but return NULL if the hardware
  58 #               support isn't compiled.
  59 # no-hw         do not compile support for any crypto hardware.
  60 # [no-]threads  [don't] try to create a library that is suitable for
  61 #               multithreaded applications (default is "threads" if we
  62 #               know how to do it)
  63 # [no-]shared   [don't] try to create shared libraries when supported.
  64 # [no-]pic      [don't] try to build position independent code when supported.
  65 #               If disabled, it also disables shared and dynamic-engine.
  66 # no-asm        do not use assembler
  67 # no-egd        do not compile support for the entropy-gathering daemon APIs
  68 # [no-]zlib     [don't] compile support for zlib compression.
  69 # zlib-dynamic  Like "zlib", but the zlib library is expected to be a shared
  70 #               library and will be loaded in run-time by the OpenSSL library.
  71 # sctp          include SCTP support
  72 # no-uplink     Don't build support for UPLINK interface.
  73 # enable-weak-ssl-ciphers
  74 #               Enable weak ciphers that are disabled by default.
  75 # 386           generate 80386 code in assembly modules
  76 # no-sse2       disables IA-32 SSE2 code in assembly modules, the above
  77 #               mentioned '386' option implies this one
  78 # no-<cipher>   build without specified algorithm (dsa, idea, rc5, ...)
  79 # -<xxx> +<xxx> All options which are unknown to the 'Configure' script are
  80 # /<xxx>        passed through to the compiler. Unix-style options beginning
  81 #               with a '-' or '+' are recognized, as well as Windows-style
  82 #               options beginning with a '/'. If the option contains arguments
  83 #               separated by spaces, then the URL-style notation %20 can be
  84 #               used for the space character in order to avoid having to quote
  85 #               the option. For example, -opt%20arg gets expanded to -opt arg.
  86 #               In fact, any ASCII character can be encoded as %xx using its
  87 #               hexadecimal encoding.
  88 # -static       while -static is also a pass-through compiler option (and
  89 #               as such is limited to environments where it's actually
  90 #               meaningful), it triggers a number configuration options,
  91 #               namely no-pic, no-shared and no-threads. It is
  92 #               argued that the only reason to produce statically linked
  93 #               binaries (and in context it means executables linked with
  94 #               -static flag, and not just executables linked with static
  95 #               libcrypto.a) is to eliminate dependency on specific run-time,
  96 #               a.k.a. libc version. The mentioned config options are meant
  97 #               to achieve just that. Unfortunately on Linux it's impossible
  98 #               to eliminate the dependency completely for openssl executable
  99 #               because of getaddrinfo and gethostbyname calls, which can
 100 #               invoke dynamically loadable library facility anyway to meet
 101 #               the lookup requests. For this reason on Linux statically
 102 #               linked openssl executable has rather debugging value than
 103 #               production quality.
 104 #
 105 # BN_LLONG      use the type 'long long' in crypto/bn/bn.h
 106 # RC4_CHAR      use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
 107 # Following are set automatically by this script
 108 #
 109 # MD5_ASM       use some extra md5 assembler,
 110 # SHA1_ASM      use some extra sha1 assembler, must define L_ENDIAN for x86
 111 # RMD160_ASM    use some extra ripemd160 assembler,
 112 # SHA256_ASM    sha256_block is implemented in assembler
 113 # SHA512_ASM    sha512_block is implemented in assembler
 114 # AES_ASM       AES_[en|de]crypt is implemented in assembler
 115
 116 # Minimum warning options... any contributions to OpenSSL should at least
 117 # get past these.  Note that we only use these with C compilers, not with
 118 # C++ compilers.
 119
 120 # DEBUG_UNUSED enables __owur (warn unused result) checks.
 121 # -DPEDANTIC complements -pedantic and is meant to mask code that
 122 # is not strictly standard-compliant and/or implementation-specific,
 123 # e.g. inline assembly, disregards to alignment requirements, such
 124 # that -pedantic would complain about. Incidentally -DPEDANTIC has
 125 # to be used even in sanitized builds, because sanitizer too is
 126 # supposed to and does take notice of non-standard behaviour. Then
 127 # -pedantic with pre-C9x compiler would also complain about 'long
 128 # long' not being supported. As 64-bit algorithms are common now,
 129 # it grew impossible to resolve this without sizeable additional
 130 # code, so we just tell compiler to be pedantic about everything
 131 # but 'long long' type.
 132
 133 my @gcc_devteam_warn = qw(
 134     -DDEBUG_UNUSED
 135     -DPEDANTIC -pedantic -Wno-long-long
 136     -Wall
 137     -Wextra
 138     -Wno-unused-parameter
 139     -Wno-missing-field-initializers
 140     -Wswitch
 141     -Wsign-compare
 142     -Wshadow
 143     -Wformat
 144     -Wtype-limits
 145     -Wundef
 146     -Werror
 147     -Wmissing-prototypes
 148     -Wstrict-prototypes
 149 );
 150
 151 # These are used in addition to $gcc_devteam_warn when the compiler is clang.
 152 # TODO(openssl-team): fix problems and investigate if (at least) the
 153 # following warnings can also be enabled:
 154 #       -Wcast-align
 155 #       -Wunreachable-code -- no, too ugly/compiler-specific
 156 #       -Wlanguage-extension-token -- no, we use asm()
 157 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
 158 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
 159 my @clang_devteam_warn = qw(
 160     -Wno-unknown-warning-option
 161     -Wswitch-default
 162     -Wno-parentheses-equality
 163     -Wno-language-extension-token
 164     -Wno-extended-offsetof
 165     -Wconditional-uninitialized
 166     -Wincompatible-pointer-types-discards-qualifiers
 167     -Wmissing-variable-declarations
 168 );
 169
 170 my @cl_devteam_warn = qw(
 171     /WX
 172 );
 173
 174 my $strict_warnings = 0;
 175
 176 # As for $BSDthreads. Idea is to maintain "collective" set of flags,
 177 # which would cover all BSD flavors. -pthread applies to them all,
 178 # but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
 179 # -lc_r, which is sufficient. FreeBSD 4.x expands it as -lc_r,
 180 # which has to be accompanied by explicit -D_THREAD_SAFE and
 181 # sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
 182 # seems to be sufficient?
 183 our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
 184
 185 #
 186 # API compatibility name to version number mapping.
 187 #
 188 my $apitable = {
 189     # This table expresses when API additions or changes can occur.
 190     # The numbering used changes from 3.0 and on because we updated
 191     # (solidified) our version numbering scheme at that point.
 192
 193     # From 3.0 and on, we internalise the given version number in decimal
 194     # as MAJOR * 10000 + MINOR * 100 + 0
 195     "3.0.0" => 30000,
 196     "3.0"   => 30000,
 197
 198     # Note that before 3.0, we didn't have the same version number scheme.
 199     # Still, the numbering we use here covers what we need.
 200     "1.1.1" => 10101,
 201     "1.1.0" => 10100,
 202     "1.0.2" => 10002,
 203     "1.0.1" => 10001,
 204     "1.0.0" => 10000,
 205     "0.9.8" =>   908,
 206 };
 207
 208 # For OpenSSL::config::get_platform
 209 my %guess_opts = ();
 210
 211 my $dryrun = 0;
 212
 213 our %table = ();
 214 our %config = ();
 215 our %withargs = ();
 216 our $now_printing;      # set to current entry's name in print_table_entry
 217                         # (todo: right thing would be to encapsulate name
 218                         # into %target [class] and make print_table_entry
 219                         # a method)
 220
 221 # Forward declarations ###############################################
 222
 223 # read_config(filename)
 224 #
 225 # Reads a configuration file and populates %table with the contents
 226 # (which the configuration file places in %targets).
 227 sub read_config;
 228
 229 # resolve_config(target)
 230 #
 231 # Resolves all the late evaluations, inheritances and so on for the
 232 # chosen target and any target it inherits from.
 233 sub resolve_config;
 234
 235
 236 # Information collection #############################################
 237
 238 # Unified build supports separate build dir
 239 my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
 240 my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
 241
 242 # File::Spec::Unix doesn't detect case insensitivity, so we make sure to
 243 # check if the source and build directory are really the same, and make
 244 # them so.  This avoids all kinds of confusion later on.
 245 # We must check @File::Spec::ISA rather than using File::Spec->isa() to
 246 # know if File::Spec ended up loading File::Spec::Unix.
 247 $srcdir = $blddir
 248     if (grep(/::Unix$/, @File::Spec::ISA)
 249         && samedir($srcdir, $blddir));
 250
 251 my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));
 252
 253 my $local_config_envname = 'OPENSSL_LOCAL_CONFIG_DIR';
 254
 255 $config{sourcedir} = abs2rel($srcdir, $blddir);
 256 $config{builddir} = abs2rel($blddir, $blddir);
 257 # echo -n 'holy hand grenade of antioch' | openssl sha256
 258 $config{FIPSKEY} =
 259     'f4556650ac31d35461610bac4ed81b1a181b2d8a43ea2854cbae22ca74560813';
 260
 261 # Collect reconfiguration information if needed
 262 my @argvcopy=@ARGV;
 263
 264 if (grep /^reconf(igure)?$/, @argvcopy) {
 265     die "reconfiguring with other arguments present isn't supported"
 266         if scalar @argvcopy > 1;
 267     if (-f "./configdata.pm") {
 268         my $file = "./configdata.pm";
 269         unless (my $return = do $file) {
 270             die "couldn't parse $file: $@" if $@;
 271             die "couldn't do $file: $!"    unless defined $return;
 272             die "couldn't run $file"       unless $return;
 273         }
 274
 275         @argvcopy = defined($configdata::config{perlargv}) ?
 276             @{$configdata::config{perlargv}} : ();
 277         die "Incorrect data to reconfigure, please do a normal configuration\n"
 278             if (grep(/^reconf/,@argvcopy));
 279         $config{perlenv} = $configdata::config{perlenv} // {};
 280     } else {
 281         die "Insufficient data to reconfigure, please do a normal configuration\n";
 282     }
 283 }
 284
 285 $config{perlargv} = [ @argvcopy ];
 286
 287 # Historical: if known directories in crypto/ have been removed, it means
 288 # that those sub-systems are disabled.
 289 # (the other option would be to removed them from the SUBDIRS statement in
 290 # crypto/build.info)
 291 # We reverse the input list for cosmetic purely reasons, to compensate that
 292 # 'unshift' adds at the front of the list (i.e. in reverse input order).
 293 foreach ( reverse sort( 'aes', 'aria', 'bf', 'camellia', 'cast', 'des', 'dh',
 294                         'dsa', 'ec', 'hmac', 'idea', 'md2', 'md5', 'mdc2',
 295                         'rc2', 'rc4', 'rc5', 'ripemd', 'seed', 'sha',
 296                         'sm2', 'sm3', 'sm4') ) {
 297     unshift @argvcopy, "no-$_" if ! -d catdir($srcdir, 'crypto', $_);
 298 }
 299
 300 # Collect version numbers
 301 my %version = ();
 302
 303 collect_information(
 304     collect_from_file(catfile($srcdir,'VERSION.dat')),
 305     qr/\s*(\w+)\s*=\s*(.*?)\s*$/ =>
 306         sub {
 307             # Only define it if there is a value at all
 308             if ($2 ne '') {
 309                 my $k = $1;
 310                 my $v = $2;
 311                 # Some values are quoted.  Trim the quotes
 312                 $v = $1 if $v =~ /^"(.*)"$/;
 313                 $version{uc $k} = $v;
 314             }
 315         },
 316     "OTHERWISE" =>
 317         sub { die "Something wrong with this line:\n$_\nin $srcdir/VERSION.dat" },
 318     );
 319
 320 $config{major} = $version{MAJOR} // 'unknown';
 321 $config{minor} = $version{MINOR} // 'unknown';
 322 $config{patch} = $version{PATCH} // 'unknown';
 323 $config{prerelease} =
 324     defined $version{PRE_RELEASE_TAG} ? "-$version{PRE_RELEASE_TAG}" : '';
 325 $config{build_metadata} =
 326     defined $version{BUILD_METADATA} ? "+$version{BUILD_METADATA}" : '';
 327 $config{shlib_version} = $version{SHLIB_VERSION} // 'unknown';
 328 $config{release_date} = $version{RELEASE_DATE} // 'xx XXX xxxx';
 329
 330 $config{version} = "$config{major}.$config{minor}.$config{patch}";
 331 $config{full_version} = "$config{version}$config{prerelease}$config{build_metadata}";
 332
 333 die "erroneous version information in VERSION.dat: ",
 334     "$config{version}, $config{shlib_version}\n"
 335     unless (defined $version{MAJOR}
 336             && defined $version{MINOR}
 337             && defined $version{PATCH}
 338             && defined $version{SHLIB_VERSION});
 339
 340 # Collect target configurations
 341
 342 my $pattern = catfile(dirname($0), "Configurations", "*.conf");
 343 foreach (sort glob($pattern)) {
 344     &read_config($_);
 345 }
 346
 347 if (defined env($local_config_envname)) {
 348     if ($^O eq 'VMS') {
 349         # VMS environment variables are logical names,
 350         # which can be used as is
 351         $pattern = $local_config_envname . ':' . '*.conf';
 352     } else {
 353         $pattern = catfile(env($local_config_envname), '*.conf');
 354     }
 355
 356     foreach (sort glob($pattern)) {
 357         &read_config($_);
 358     }
 359 }
 360
 361 # Save away perl command information
 362 $config{perl_cmd} = $^X;
 363 $config{perl_version} = $Config{version};
 364 $config{perl_archname} = $Config{archname};
 365
 366 $config{prefix}="";
 367 $config{openssldir}="";
 368 $config{processor}="";
 369 $config{libdir}="";
 370 my $auto_threads=1;    # enable threads automatically? true by default
 371 my $default_ranlib;
 372
 373 # Known TLS and DTLS protocols
 374 my @tls = qw(ssl3 tls1 tls1_1 tls1_2 tls1_3);
 375 my @dtls = qw(dtls1 dtls1_2);
 376
 377 # Explicitly known options that are possible to disable.  They can
 378 # be regexps, and will be used like this: /^no-${option}$/
 379 # For developers: keep it sorted alphabetically
 380
 381 my @disablables = (
 382     "acvp_tests",
 383     "afalgeng",
 384     "aria",
 385     "asan",
 386     "asm",
 387     "async",
 388     "autoalginit",
 389     "autoerrinit",
 390     "autoload-config",
 391     "bf",
 392     "blake2",
 393     "buildtest-c++",
 394     "bulk",
 395     "cached-fetch",
 396     "camellia",
 397     "capieng",
 398     "cast",
 399     "chacha",
 400     "cmac",
 401     "cmp",
 402     "cms",
 403     "comp",
 404     "crypto-mdebug",
 405     "ct",
 406     "deprecated",
 407     "des",
 408     "devcryptoeng",
 409     "dgram",
 410     "dh",
 411     "dsa",
 412     "dso",
 413     "dtls",
 414     "dynamic-engine",
 415     "ec",
 416     "ec2m",
 417     "ec_nistp_64_gcc_128",
 418     "ecdh",
 419     "ecdsa",
 420     "egd",
 421     "engine",
 422     "err",
 423     "external-tests",
 424     "filenames",
 425     "fips",
 426     "fips-securitychecks",
 427     "fuzz-afl",
 428     "fuzz-libfuzzer",
 429     "gost",
 430     "idea",
 431     "ktls",
 432     "legacy",
 433     "makedepend",
 434     "md2",
 435     "md4",
 436     "mdc2",
 437     "module",
 438     "msan",
 439     "multiblock",
 440     "nextprotoneg",
 441     "ocb",
 442     "ocsp",
 443     "padlockeng",
 444     "pic",
 445     "pinshared",
 446     "poly1305",
 447     "posix-io",
 448     "psk",
 449     "rc2",
 450     "rc4",
 451     "rc5",
 452     "rdrand",
 453     "rfc3779",
 454     "rmd160",
 455     "scrypt",
 456     "sctp",
 457     "secure-memory",
 458     "seed",
 459     "shared",
 460     "siphash",
 461     "siv",
 462     "sm2",
 463     "sm3",
 464     "sm4",
 465     "sock",
 466     "srp",
 467     "srtp",
 468     "sse2",
 469     "ssl",
 470     "ssl-trace",
 471     "static-engine",
 472     "stdio",
 473     "tests",
 474     "threads",
 475     "tls",
 476     "trace",
 477     "ts",
 478     "ubsan",
 479     "ui-console",
 480     "unit-test",
 481     "uplink",
 482     "weak-ssl-ciphers",
 483     "whirlpool",
 484     "zlib",
 485     "zlib-dynamic",
 486     );
 487 foreach my $proto ((@tls, @dtls))
 488         {
 489         push(@disablables, $proto);
 490         push(@disablables, "$proto-method") unless $proto eq "tls1_3";
 491         }
 492
 493 # Internal disablables, for aliasing purposes.  They serve no special
 494 # purpose here, but allow scripts to get to know them through configdata.pm,
 495 # where these are merged with @disablables.
 496 # The actual aliasing mechanism is done via %disable_cascades
 497 my @disablables_int = qw(
 498     crmf
 499     );
 500
 501 my %deprecated_disablables = (
 502     "ssl2" => undef,
 503     "buf-freelists" => undef,
 504     "crypto-mdebug-backtrace" => undef,
 505     "hw" => "hw",               # causes cascade, but no macro
 506     "hw-padlock" => "padlockeng",
 507     "ripemd" => "rmd160",
 508     "ui" => "ui-console",
 509     "heartbeats" => undef,
 510     );
 511
 512 # All of the following are disabled by default:
 513
 514 our %disabled = ( # "what"         => "comment"
 515                   "fips"                => "default",
 516                   "asan"                => "default",
 517                   "buildtest-c++"       => "default",
 518                   "crypto-mdebug"       => "default",
 519                   "crypto-mdebug-backtrace" => "default",
 520                   "devcryptoeng"        => "default",
 521                   "ec_nistp_64_gcc_128" => "default",
 522                   "egd"                 => "default",
 523                   "external-tests"      => "default",
 524                   "fuzz-afl"            => "default",
 525                   "fuzz-libfuzzer"      => "default",
 526                   "ktls"                => "default",
 527                   "md2"                 => "default",
 528                   "msan"                => "default",
 529                   "rc5"                 => "default",
 530                   "sctp"                => "default",
 531                   "ssl-trace"           => "default",
 532                   "ssl3"                => "default",
 533                   "ssl3-method"         => "default",
 534                   "trace"               => "default",
 535                   "ubsan"               => "default",
 536                   "unit-test"           => "default",
 537                   "weak-ssl-ciphers"    => "default",
 538                   "zlib"                => "default",
 539                   "zlib-dynamic"        => "default",
 540                 );
 541
 542 # Note: => pair form used for aesthetics, not to truly make a hash table
 543 my @disable_cascades = (
 544     # "what"            => [ "cascade", ... ]
 545     "bulk"              => [ "shared", "dso",
 546                              "aria", "async", "autoload-config",
 547                              "blake2", "bf", "camellia", "cast", "chacha",
 548                              "cmac", "cms", "cmp", "comp", "ct",
 549                              "des", "dgram", "dh", "dsa",
 550                              "ec", "engine",
 551                              "filenames",
 552                              "idea", "ktls",
 553                              "md4", "multiblock", "nextprotoneg",
 554                              "ocsp", "ocb", "poly1305", "psk",
 555                              "rc2", "rc4", "rmd160",
 556                              "seed", "siphash", "siv",
 557                              "sm3", "sm4", "srp",
 558                              "srtp", "ssl3-method",
 559                              "ts", "ui-console", "whirlpool",
 560                              "fips-securitychecks" ],
 561     sub { $config{processor} eq "386" }
 562                         => [ "sse2" ],
 563     "ssl"               => [ "ssl3" ],
 564     "ssl3-method"       => [ "ssl3" ],
 565     "zlib"              => [ "zlib-dynamic" ],
 566     "des"               => [ "mdc2" ],
 567     "ec"                => [ "ec2m", "ecdsa", "ecdh", "sm2", "gost" ],
 568     "dgram"             => [ "dtls", "sctp" ],
 569     "sock"              => [ "dgram" ],
 570     "dtls"              => [ @dtls ],
 571     sub { 0 == scalar grep { !$disabled{$_} } @dtls }
 572                         => [ "dtls" ],
 573
 574     "tls"               => [ @tls ],
 575     sub { 0 == scalar grep { !$disabled{$_} } @tls }
 576                         => [ "tls" ],
 577
 578     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
 579
 580     # If no modules, then no dynamic engines either
 581     "module"            => [ "dynamic-engine" ],
 582
 583     # Without shared libraries, dynamic engines aren't possible.
 584     # This is due to them having to link with libcrypto and register features
 585     # using the ENGINE functionality, and since that relies on global tables,
 586     # those *have* to be exacty the same as the ones accessed from the app,
 587     # which cannot be guaranteed if shared libraries aren't present.
 588     # (note that even with shared libraries, both the app and dynamic engines
 589     # must be linked with the same library)
 590     "shared"            => [ "dynamic-engine", "uplink" ],
 591     "dso"               => [ "dynamic-engine", "module" ],
 592     # Other modules don't necessarily have to link with libcrypto, so shared
 593     # libraries do not have to be a condition to produce those.
 594
 595     # Without position independent code, there can be no shared libraries
 596     # or modules.
 597     "pic"               => [ "shared", "module" ],
 598
 599     "module"            => [ "fips", "dso" ],
 600
 601     "engine"            => [ "dynamic-engine", grep(/eng$/, @disablables) ],
 602     "hw"                => [ "padlockeng" ],
 603
 604     # no-autoalginit is only useful when building non-shared
 605     "autoalginit"       => [ "shared", "apps", "fips" ],
 606
 607     "stdio"             => [ "apps", "capieng", "egd" ],
 608     "apps"              => [ "tests" ],
 609     "tests"             => [ "external-tests" ],
 610     "comp"              => [ "zlib" ],
 611     "sm3"               => [ "sm2" ],
 612     sub { !$disabled{"unit-test"} } => [ "heartbeats" ],
 613
 614     sub { !$disabled{"msan"} } => [ "asm" ],
 615
 616     "cmac"              => [ "siv" ],
 617     "legacy"            => [ "md2" ],
 618
 619     "cmp"               => [ "crmf" ],
 620
 621     "fips"              => [ "fips-securitychecks" ],
 622
 623     "deprecated-3.0"    => [ "engine", "srp" ]
 624     );
 625
 626 # Avoid protocol support holes.  Also disable all versions below N, if version
 627 # N is disabled while N+1 is enabled.
 628 #
 629 my @list = (reverse @tls);
 630 while ((my $first, my $second) = (shift @list, shift @list)) {
 631     last unless @list;
 632     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 633                               => [ @list ] );
 634     unshift @list, $second;
 635 }
 636 my @list = (reverse @dtls);
 637 while ((my $first, my $second) = (shift @list, shift @list)) {
 638     last unless @list;
 639     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 640                               => [ @list ] );
 641     unshift @list, $second;
 642 }
 643
 644 # Explicit "no-..." options will be collected in %disabled along with the defaults.
 645 # To remove something from %disabled, use "enable-foo".
 646 # For symmetry, "disable-foo" is a synonym for "no-foo".
 647
 648 # For the "make variables" CPPINCLUDES and CPPDEFINES, we support lists with
 649 # platform specific list separators.  Users from those platforms should
 650 # recognise those separators from how you set up the PATH to find executables.
 651 # The default is the Unix like separator, :, but as an exception, we also
 652 # support the space as separator.
 653 my $list_separator_re =
 654     { VMS           => qr/(?<!\^),/,
 655       MSWin32       => qr/(?<!\\);/ } -> {$^O} // qr/(?<!\\)[:\s]/;
 656 # All the "make variables" we support
 657 # Some get pre-populated for the sake of backward compatibility
 658 # (we supported those before the change to "make variable" support.
 659 my %user = (
 660     AR          => env('AR'),
 661     ARFLAGS     => [],
 662     AS          => undef,
 663     ASFLAGS     => [],
 664     CC          => env('CC'),
 665     CFLAGS      => [ env('CFLAGS') || () ],
 666     CXX         => env('CXX'),
 667     CXXFLAGS    => [ env('CXXFLAGS') || () ],
 668     CPP         => undef,
 669     CPPFLAGS    => [ env('CPPFLAGS') || () ],  # -D, -I, -Wp,
 670     CPPDEFINES  => [],  # Alternative for -D
 671     CPPINCLUDES => [],  # Alternative for -I
 672     CROSS_COMPILE => env('CROSS_COMPILE'),
 673     HASHBANGPERL=> env('HASHBANGPERL') || env('PERL'),
 674     LD          => undef,
 675     LDFLAGS     => [ env('LDFLAGS') || () ],  # -L, -Wl,
 676     LDLIBS      => [ env('LDLIBS') || () ],  # -l
 677     MT          => undef,
 678     MTFLAGS     => [],
 679     PERL        => env('PERL') || ($^O ne "VMS" ? $^X : "perl"),
 680     RANLIB      => env('RANLIB'),
 681     RC          => env('RC') || env('WINDRES'),
 682     RCFLAGS     => [ env('RCFLAGS') || () ],
 683     RM          => undef,
 684    );
 685 # Info about what "make variables" may be prefixed with the cross compiler
 686 # prefix.  This should NEVER mention any such variable with a list for value.
 687 my @user_crossable = qw ( AR AS CC CXX CPP LD MT RANLIB RC );
 688 # The same but for flags given as Configure options.  These are *additional*
 689 # input, as opposed to the VAR=string option that override the corresponding
 690 # config target attributes
 691 my %useradd = (
 692     CPPDEFINES  => [],
 693     CPPINCLUDES => [],
 694     CPPFLAGS    => [],
 695     CFLAGS      => [],
 696     CXXFLAGS    => [],
 697     LDFLAGS     => [],
 698     LDLIBS      => [],
 699     RCFLAGS     => [],
 700    );
 701
 702 my %user_synonyms = (
 703     HASHBANGPERL=> 'PERL',
 704     RC          => 'WINDRES',
 705    );
 706
 707 # Some target attributes have been renamed, this is the translation table
 708 my %target_attr_translate =(
 709     ar          => 'AR',
 710     as          => 'AS',
 711     cc          => 'CC',
 712     cxx         => 'CXX',
 713     cpp         => 'CPP',
 714     hashbangperl => 'HASHBANGPERL',
 715     ld          => 'LD',
 716     mt          => 'MT',
 717     ranlib      => 'RANLIB',
 718     rc          => 'RC',
 719     rm          => 'RM',
 720    );
 721
 722 # Initialisers coming from 'config' scripts
 723 $config{defines} = [ split(/$list_separator_re/, env('__CNF_CPPDEFINES')) ];
 724 $config{includes} = [ split(/$list_separator_re/, env('__CNF_CPPINCLUDES')) ];
 725 $config{cppflags} = [ env('__CNF_CPPFLAGS') || () ];
 726 $config{cflags} = [ env('__CNF_CFLAGS') || () ];
 727 $config{cxxflags} = [ env('__CNF_CXXFLAGS') || () ];
 728 $config{lflags} = [ env('__CNF_LDFLAGS') || () ];
 729 $config{ex_libs} = [ env('__CNF_LDLIBS') || () ];
 730
 731 $config{openssl_api_defines}=[];
 732 $config{openssl_sys_defines}=[];
 733 $config{openssl_feature_defines}=[];
 734 $config{options}="";
 735 $config{build_type} = "release";
 736 my $target="";
 737
 738 my %cmdvars = ();               # Stores FOO='blah' type arguments
 739 my %unsupported_options = ();
 740 my %deprecated_options = ();
 741 # If you change this, update apps/version.c
 742 my @known_seed_sources = qw(getrandom devrandom os egd none rdcpu librandom);
 743 my @seed_sources = ();
 744 while (@argvcopy)
 745         {
 746         $_ = shift @argvcopy;
 747
 748         # Support env variable assignments among the options
 749         if (m|^(\w+)=(.+)?$|)
 750                 {
 751                 $cmdvars{$1} = $2;
 752                 # Every time a variable is given as a configuration argument,
 753                 # it acts as a reset if the variable.
 754                 if (exists $user{$1})
 755                         {
 756                         $user{$1} = ref $user{$1} eq "ARRAY" ? [] : undef;
 757                         }
 758                 #if (exists $useradd{$1})
 759                 #       {
 760                 #       $useradd{$1} = [];
 761                 #       }
 762                 next;
 763                 }
 764
 765         # VMS is a case insensitive environment, and depending on settings
 766         # out of our control, we may receive options uppercased.  Let's
 767         # downcase at least the part before any equal sign.
 768         if ($^O eq "VMS")
 769                 {
 770                 s/^([^=]*)/lc($1)/e;
 771                 }
 772
 773         # some people just can't read the instructions, clang people have to...
 774         s/^-no-(?!integrated-as)/no-/;
 775
 776         # rewrite some options in "enable-..." form
 777         s /^-?-?shared$/enable-shared/;
 778         s /^sctp$/enable-sctp/;
 779         s /^threads$/enable-threads/;
 780         s /^zlib$/enable-zlib/;
 781         s /^zlib-dynamic$/enable-zlib-dynamic/;
 782
 783         if (/^(no|disable|enable)-(.+)$/)
 784                 {
 785                 my $word = $2;
 786                 if ($word !~ m|hw(?:-.+)| # special treatment for hw regexp opt
 787                         && !exists $deprecated_disablables{$word}
 788                         && !grep { $word eq $_ } @disablables)
 789                         {
 790                         $unsupported_options{$_} = 1;
 791                         next;
 792                         }
 793                 }
 794         if (/^no-(.+)$/ || /^disable-(.+)$/)
 795                 {
 796                 foreach my $proto ((@tls, @dtls))
 797                         {
 798                         if ($1 eq "$proto-method")
 799                                 {
 800                                 $disabled{"$proto"} = "option($proto-method)";
 801                                 last;
 802                                 }
 803                         }
 804                 if ($1 eq "dtls")
 805                         {
 806                         foreach my $proto (@dtls)
 807                                 {
 808                                 $disabled{$proto} = "option(dtls)";
 809                                 }
 810                         $disabled{"dtls"} = "option(dtls)";
 811                         }
 812                 elsif ($1 eq "ssl")
 813                         {
 814                         # Last one of its kind
 815                         $disabled{"ssl3"} = "option(ssl)";
 816                         }
 817                 elsif ($1 eq "tls")
 818                         {
 819                         # XXX: Tests will fail if all SSL/TLS
 820                         # protocols are disabled.
 821                         foreach my $proto (@tls)
 822                                 {
 823                                 $disabled{$proto} = "option(tls)";
 824                                 }
 825                         }
 826                 elsif ($1 eq "static-engine")
 827                         {
 828                         delete $disabled{"dynamic-engine"};
 829                         }
 830                 elsif ($1 eq "dynamic-engine")
 831                         {
 832                         $disabled{"dynamic-engine"} = "option";
 833                         }
 834                 elsif (exists $deprecated_disablables{$1})
 835                         {
 836                         $deprecated_options{$_} = 1;
 837                         if (defined $deprecated_disablables{$1})
 838                                 {
 839                                 $disabled{$deprecated_disablables{$1}} = "option";
 840                                 }
 841                         }
 842                 elsif ($1 =~ m|hw(?:-.+)|) # deprecate hw options in regexp form
 843                         {
 844                         $deprecated_options{$_} = 1;
 845                         }
 846                 else
 847                         {
 848                         $disabled{$1} = "option";
 849                         }
 850                 # No longer an automatic choice
 851                 $auto_threads = 0 if ($1 eq "threads");
 852                 }
 853         elsif (/^enable-(.+)$/)
 854                 {
 855                 if ($1 eq "static-engine")
 856                         {
 857                         $disabled{"dynamic-engine"} = "option";
 858                         }
 859                 elsif ($1 eq "dynamic-engine")
 860                         {
 861                         delete $disabled{"dynamic-engine"};
 862                         }
 863                 elsif ($1 eq "zlib-dynamic")
 864                         {
 865                         delete $disabled{"zlib"};
 866                         }
 867                 my $algo = $1;
 868                 delete $disabled{$algo};
 869
 870                 # No longer an automatic choice
 871                 $auto_threads = 0 if ($1 eq "threads");
 872                 }
 873         elsif (/^-d$/)          # From older 'config'
 874                 {
 875                 $config{build_type} = "debug";
 876                 }
 877         elsif (/^-v$/)          # From older 'config'
 878                 {
 879                 $guess_opts{verbose} = 1;
 880                 }
 881         elsif (/^-w$/)          # From older 'config'
 882                 {
 883                 $guess_opts{nowait} = 1;
 884                 }
 885         elsif (/^-t$/)          # From older 'config'
 886                 {
 887                 $dryrun = 1;
 888                 }
 889         elsif (/^--strict-warnings$/)
 890                 {
 891                 # Pretend that our strict flags is a C flag, and replace it
 892                 # with the proper flags later on
 893                 push @{$useradd{CFLAGS}}, '--ossl-strict-warnings';
 894                 $strict_warnings=1;
 895                 }
 896         elsif (/^--debug$/)
 897                 {
 898                 $config{build_type} = "debug";
 899                 }
 900         elsif (/^--release$/)
 901                 {
 902                 $config{build_type} = "release";
 903                 }
 904         elsif (/^386$/)
 905                 { $config{processor}=386; }
 906         elsif (/^fips$/)
 907                 {
 908                 die "FIPS mode not supported\n";
 909                 }
 910         elsif (/^rsaref$/)
 911                 {
 912                 # No RSAref support any more since it's not needed.
 913                 # The check for the option is there so scripts aren't
 914                 # broken
 915                 }
 916         elsif (/^nofipscanistercheck$/)
 917                 {
 918                 die "FIPS mode not supported\n";
 919                 }
 920         elsif (m|^[-+/]|)
 921                 {
 922                 if (/^--prefix=(.*)$/)
 923                         {
 924                         $config{prefix}=$1;
 925                         die "Directory given with --prefix MUST be absolute\n"
 926                                 unless file_name_is_absolute($config{prefix});
 927                         }
 928                 elsif (/^--api=(.*)$/)
 929                         {
 930                         my $api = $1;
 931                         die "Unknown API compatibility level $api"
 932                                 unless defined $apitable->{$api};
 933                         $config{api}=$apitable->{$api};
 934                         }
 935                 elsif (/^--libdir=(.*)$/)
 936                         {
 937                         $config{libdir}=$1;
 938                         }
 939                 elsif (/^--openssldir=(.*)$/)
 940                         {
 941                         $config{openssldir}=$1;
 942                         }
 943                 elsif (/^--with-zlib-lib=(.*)$/)
 944                         {
 945                         $withargs{zlib_lib}=$1;
 946                         }
 947                 elsif (/^--with-zlib-include=(.*)$/)
 948                         {
 949                         $withargs{zlib_include}=$1;
 950                         }
 951                 elsif (/^--with-fuzzer-lib=(.*)$/)
 952                         {
 953                         $withargs{fuzzer_lib}=$1;
 954                         }
 955                 elsif (/^--with-fuzzer-include=(.*)$/)
 956                         {
 957                         $withargs{fuzzer_include}=$1;
 958                         }
 959                 elsif (/^--with-rand-seed=(.*)$/)
 960                         {
 961                         foreach my $x (split(m|,|, $1))
 962                             {
 963                             die "Unknown --with-rand-seed choice $x\n"
 964                                 if ! grep { $x eq $_ } @known_seed_sources;
 965                             push @seed_sources, $x;
 966                             }
 967                         }
 968                 elsif (/^--fips-key=(.*)$/)
 969                         {
 970                         $user{FIPSKEY}=lc($1);
 971                         die "Non-hex character in FIPS key\n"
 972                            if $user{FIPSKEY} =~ /[^a-f0-9]/;
 973                         die "FIPS key must have even number of characters\n"
 974                            if length $1 & 1;
 975                         die "FIPS key too long (64 bytes max)\n"
 976                            if length $1 > 64;
 977                         }
 978                 elsif (/^--cross-compile-prefix=(.*)$/)
 979                         {
 980                         $user{CROSS_COMPILE}=$1;
 981                         }
 982                 elsif (/^--config=(.*)$/)
 983                         {
 984                         read_config $1;
 985                         }
 986                 elsif (/^-l(.*)$/)
 987                         {
 988                         push @{$useradd{LDLIBS}}, $_;
 989                         }
 990                 elsif (/^-framework$/)
 991                         {
 992                         push @{$useradd{LDLIBS}}, $_, shift(@argvcopy);
 993                         }
 994                 elsif (/^-L(.*)$/ or /^-Wl,/)
 995                         {
 996                         push @{$useradd{LDFLAGS}}, $_;
 997                         }
 998                 elsif (/^-rpath$/ or /^-R$/)
 999                         # -rpath is the OSF1 rpath flag
1000                         # -R is the old Solaris rpath flag
1001                         {
1002                         my $rpath = shift(@argvcopy) || "";
1003                         $rpath .= " " if $rpath ne "";
1004                         push @{$useradd{LDFLAGS}}, $_, $rpath;
1005                         }
1006                 elsif (/^-static$/)
1007                         {
1008                         push @{$useradd{LDFLAGS}}, $_;
1009                         }
1010                 elsif (m|^[-/]D(.*)$|)
1011                         {
1012                         push @{$useradd{CPPDEFINES}}, $1;
1013                         }
1014                 elsif (m|^[-/]I(.*)$|)
1015                         {
1016                         push @{$useradd{CPPINCLUDES}}, $1;
1017                         }
1018                 elsif (/^-Wp,$/)
1019                         {
1020                         push @{$useradd{CPPFLAGS}}, $1;
1021                         }
1022                 else    # common if (/^[-+]/), just pass down...
1023                         {
1024                         # Treat %xx as an ASCII code (e.g. replace %20 by a space character).
1025                         # This provides a simple way to pass options with arguments separated
1026                         # by spaces without quoting (e.g. -opt%20arg translates to -opt arg).
1027                         $_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
1028                         push @{$useradd{CFLAGS}}, $_;
1029                         push @{$useradd{CXXFLAGS}}, $_;
1030                         }
1031                 }
1032         elsif (m|^/|)
1033                 {
1034                 # Treat %xx as an ASCII code (e.g. replace %20 by a space character).
1035                 # This provides a simple way to pass options with arguments separated
1036                 # by spaces without quoting (e.g. /opt%20arg translates to /opt arg).
1037                 $_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
1038                 push @{$useradd{CFLAGS}}, $_;
1039                 push @{$useradd{CXXFLAGS}}, $_;
1040                 }
1041         else
1042                 {
1043                 die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
1044                 $target=$_;
1045                 }
1046         unless ($_ eq $target || /^no-/ || /^disable-/)
1047                 {
1048                 # "no-..." follows later after implied deactivations
1049                 # have been derived.  (Don't take this too seriously,
1050                 # we really only write OPTIONS to the Makefile out of
1051                 # nostalgia.)
1052
1053                 if ($config{options} eq "")
1054                         { $config{options} = $_; }
1055                 else
1056                         { $config{options} .= " ".$_; }
1057                 }
1058         }
1059
1060 if (keys %deprecated_options)
1061         {
1062         warn "***** Deprecated options: ",
1063                 join(", ", keys %deprecated_options), "\n";
1064         }
1065 if (keys %unsupported_options)
1066         {
1067         die "***** Unsupported options: ",
1068                 join(", ", keys %unsupported_options), "\n";
1069         }
1070
1071 # If any %useradd entry has been set, we must check that the "make
1072 # variables" haven't been set.  We start by checking of any %useradd entry
1073 # is set.
1074 if (grep { scalar @$_ > 0 } values %useradd) {
1075     # Hash of env / make variables names.  The possible values are:
1076     # 1 - "make vars"
1077     # 2 - %useradd entry set
1078     # 3 - both set
1079     my %detected_vars =
1080         map { my $v = 0;
1081               $v += 1 if $cmdvars{$_};
1082               $v += 2 if @{$useradd{$_}};
1083               $_ => $v }
1084         keys %useradd;
1085
1086     # If any of the corresponding "make variables" is set, we error
1087     if (grep { $_ & 1 } values %detected_vars) {
1088         my $names = join(', ', grep { $detected_vars{$_} > 0 }
1089                                sort keys %detected_vars);
1090         die <<"_____";
1091 ***** Mixing make variables and additional compiler/linker flags as
1092 ***** configure command line option is not permitted.
1093 ***** Affected make variables: $names
1094 _____
1095     }
1096 }
1097
1098 # Check through all supported command line variables to see if any of them
1099 # were set, and canonicalise the values we got.  If no compiler or linker
1100 # flag or anything else that affects %useradd was set, we also check the
1101 # environment for values.
1102 my $anyuseradd =
1103     grep { defined $_ && (ref $_ ne 'ARRAY' || @$_) } values %useradd;
1104 foreach (keys %user) {
1105     my $value = $cmdvars{$_};
1106     $value //= env($_) unless $anyuseradd;
1107     $value //=
1108         defined $user_synonyms{$_} ? $cmdvars{$user_synonyms{$_}} : undef;
1109     $value //= defined $user_synonyms{$_} ? env($user_synonyms{$_}) : undef
1110         unless $anyuseradd;
1111
1112     if (defined $value) {
1113         if (ref $user{$_} eq 'ARRAY') {
1114             if ($_ eq 'CPPDEFINES' || $_ eq 'CPPINCLUDES') {
1115                 $user{$_} = [ split /$list_separator_re/, $value ];
1116             } else {
1117                 $user{$_} = [ $value ];
1118             }
1119         } elsif (!defined $user{$_}) {
1120             $user{$_} = $value;
1121         }
1122     }
1123 }
1124
1125 if (grep { /-rpath\b/ } ($user{LDFLAGS} ? @{$user{LDFLAGS}} : ())
1126     && !$disabled{shared}
1127     && !($disabled{asan} && $disabled{msan} && $disabled{ubsan})) {
1128     die "***** Cannot simultaneously use -rpath, shared libraries, and\n",
1129         "***** any of asan, msan or ubsan\n";
1130 }
1131
1132 # If no target was given, try guessing.
1133 unless ($target) {
1134     my %system_config = OpenSSL::config::get_platform(%guess_opts, %user);
1135
1136     # The $system_config{disable} is used to populate %disabled with
1137     # entries that aren't already there.
1138     foreach ( @{$system_config{disable} // []} ) {
1139         $disabled{$_} = 'system' unless defined $disabled{$_};
1140     }
1141     delete $system_config{disable};
1142
1143     # Override config entries with stuff from the guesser.
1144     # It's assumed that this really is nothing new.
1145     %config = ( %config, %system_config );
1146     $target = $system_config{target};
1147 }
1148
1149 sub disable {
1150     my $disable_type = shift;
1151
1152     for (@_) {
1153         $disabled{$_} = $disable_type;
1154     }
1155
1156     my @tocheckfor = (@_ ? @_ : keys %disabled);
1157     while (@tocheckfor) {
1158         my %new_tocheckfor = ();
1159         my @cascade_copy = (@disable_cascades);
1160         while (@cascade_copy) {
1161             my ($test, $descendents) =
1162                 (shift @cascade_copy, shift @cascade_copy);
1163             if (ref($test) eq "CODE" ? $test->() : defined($disabled{$test})) {
1164                 foreach (grep { !defined($disabled{$_}) } @$descendents) {
1165                     $new_tocheckfor{$_} = 1; $disabled{$_} = "cascade";
1166                 }
1167             }
1168         }
1169         @tocheckfor = (keys %new_tocheckfor);
1170     }
1171 }
1172 disable();                     # First cascade run
1173
1174 our $die = sub { die @_; };
1175 if ($target eq "TABLE") {
1176     local $die = sub { warn @_; };
1177     foreach (sort keys %table) {
1178         print_table_entry($_, "TABLE");
1179     }
1180     exit 0;
1181 }
1182
1183 if ($target eq "LIST") {
1184     foreach (sort keys %table) {
1185         print $_,"\n" unless $table{$_}->{template};
1186     }
1187     exit 0;
1188 }
1189
1190 if ($target eq "HASH") {
1191     local $die = sub { warn @_; };
1192     print "%table = (\n";
1193     foreach (sort keys %table) {
1194         print_table_entry($_, "HASH");
1195     }
1196     exit 0;
1197 }
1198
1199 print "Configuring OpenSSL version $config{full_version} ";
1200 print "for target $target\n";
1201
1202 if (scalar(@seed_sources) == 0) {
1203     print "Using os-specific seed configuration\n";
1204     push @seed_sources, 'os';
1205 }
1206 if (scalar(grep { $_ eq 'egd' } @seed_sources) > 0) {
1207     delete $disabled{'egd'};
1208 }
1209 if (scalar(grep { $_ eq 'none' } @seed_sources) > 0) {
1210     die "Cannot seed with none and anything else" if scalar(@seed_sources) > 1;
1211     warn <<_____ if scalar(@seed_sources) == 1;
1212
1213 ============================== WARNING ===============================
1214 You have selected the --with-rand-seed=none option, which effectively
1215 disables automatic reseeding of the OpenSSL random generator.
1216 All operations depending on the random generator such as creating keys
1217 will not work unless the random generator is seeded manually by the
1218 application.
1219
1220 Please read the 'Note on random number generation' section in the
1221 INSTALL.md instructions and the RAND_DRBG(7) manual page for more
1222 details.
1223 ============================== WARNING ===============================
1224
1225 _____
1226 }
1227 push @{$config{openssl_feature_defines}},
1228      map { (my $x = $_) =~ tr|[\-a-z]|[_A-Z]|; "OPENSSL_RAND_SEED_$x" }
1229         @seed_sources;
1230
1231 # Backward compatibility?
1232 if ($target =~ m/^CygWin32(-.*)$/) {
1233     $target = "Cygwin".$1;
1234 }
1235
1236 # Support for legacy targets having a name starting with 'debug-'
1237 my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
1238 if ($d) {
1239     $config{build_type} = "debug";
1240
1241     # If we do not find debug-foo in the table, the target is set to foo.
1242     if (!$table{$target}) {
1243         $target = $t;
1244     }
1245 }
1246
1247 if ($target) {
1248     # It's possible that we have different config targets for specific
1249     # toolchains, so we try to detect them, and go for the plain config
1250     # target if not.
1251     my $found;
1252     foreach ( ( "$target-$user{CC}", "$target", undef ) ) {
1253         $found=$_ if $table{$_} && !$table{$_}->{template};
1254         last if $found;
1255     }
1256     $target = $found;
1257 } else {
1258     # If we don't have a config target now, we try the C compiler as we
1259     # fallback
1260     my $cc = $user{CC} // 'cc';
1261     $target = $cc if $table{$cc} && !$table{$cc}->{template};
1262 }
1263
1264 &usage unless $target;
1265
1266 exit 0 if $dryrun;              # From older 'config'
1267
1268 $config{target} = $target;
1269 my %target = resolve_config($target);
1270
1271 foreach (keys %target_attr_translate) {
1272     $target{$target_attr_translate{$_}} = $target{$_}
1273         if $target{$_};
1274     delete $target{$_};
1275 }
1276
1277 %target = ( %{$table{DEFAULTS}}, %target );
1278
1279 my %conf_files = map { $_ => 1 } (@{$target{_conf_fname_int}});
1280 $config{conf_files} = [ sort keys %conf_files ];
1281
1282 # Using sub disable within these loops may prove fragile, so we run
1283 # a cascade afterwards
1284 foreach my $feature (@{$target{disable}}) {
1285     if (exists $deprecated_disablables{$feature}) {
1286         warn "***** config $target disables deprecated feature $feature\n";
1287     } elsif (!grep { $feature eq $_ } @disablables) {
1288         die "***** config $target disables unknown feature $feature\n";
1289     }
1290     $disabled{$feature} = 'config';
1291 }
1292 foreach my $feature (@{$target{enable}}) {
1293     if ("default" eq ($disabled{$feature} // "")) {
1294         if (exists $deprecated_disablables{$feature}) {
1295             warn "***** config $target enables deprecated feature $feature\n";
1296         } elsif (!grep { $feature eq $_ } @disablables) {
1297             die "***** config $target enables unknown feature $feature\n";
1298         }
1299         delete $disabled{$feature};
1300     }
1301 }
1302
1303 # If uplink_arch isn't defined, disable uplink
1304 $disabled{uplink} = 'no uplink_arch' unless (defined $target{uplink_arch});
1305 # If asm_arch isn't defined, disable asm
1306 $disabled{asm} = 'no asm_arch' unless (defined $target{asm_arch});
1307
1308 disable();                      # Run a cascade now
1309
1310 $target{CXXFLAGS}//=$target{CFLAGS} if $target{CXX};
1311 $target{cxxflags}//=$target{cflags} if $target{CXX};
1312 $target{exe_extension}=".exe" if ($config{target} eq "DJGPP");
1313 $target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
1314
1315 # Fill %config with values from %user, and in case those are undefined or
1316 # empty, use values from %target (acting as a default).
1317 foreach (keys %user) {
1318     my $ref_type = ref $user{$_};
1319
1320     # Temporary function.  Takes an intended ref type (empty string or "ARRAY")
1321     # and a value that's to be coerced into that type.
1322     my $mkvalue = sub {
1323         my $type = shift;
1324         my $value = shift;
1325         my $undef_p = shift;
1326
1327         die "Too many arguments for \$mkvalue" if @_;
1328
1329         while (ref $value eq 'CODE') {
1330             $value = $value->();
1331         }
1332
1333         if ($type eq 'ARRAY') {
1334             return undef unless defined $value;
1335             return undef if ref $value ne 'ARRAY' && !$value;
1336             return undef if ref $value eq 'ARRAY' && !@$value;
1337             return [ $value ] unless ref $value eq 'ARRAY';
1338         }
1339         return undef unless $value;
1340         return $value;
1341     };
1342
1343     $config{$_} =
1344         $mkvalue->($ref_type, $user{$_})
1345         || $mkvalue->($ref_type, $target{$_});
1346     delete $config{$_} unless defined $config{$_};
1347 }
1348
1349 # Finish up %config by appending things the user gave us on the command line
1350 # apart from "make variables"
1351 foreach (keys %useradd) {
1352     # The must all be lists, so we assert that here
1353     die "internal error: \$useradd{$_} isn't an ARRAY\n"
1354         unless ref $useradd{$_} eq 'ARRAY';
1355
1356     if (defined $config{$_}) {
1357         push @{$config{$_}}, @{$useradd{$_}};
1358     } else {
1359         $config{$_} = [ @{$useradd{$_}} ];
1360     }
1361 }
1362 # At this point, we can forget everything about %user and %useradd,
1363 # because it's now all been merged into the corresponding $config entry
1364
1365 # Allow overriding the build file name
1366 $config{build_file} = env('BUILDFILE') || $target{build_file} || "Makefile";
1367
1368 # Make sure build_scheme is consistent.
1369 $target{build_scheme} = [ $target{build_scheme} ]
1370     if ref($target{build_scheme}) ne "ARRAY";
1371
1372 my ($builder, $builder_platform, @builder_opts) =
1373     @{$target{build_scheme}};
1374
1375 foreach my $checker (($builder_platform."-".$target{build_file}."-checker.pm",
1376                       $builder_platform."-checker.pm")) {
1377     my $checker_path = catfile($srcdir, "Configurations", $checker);
1378     if (-f $checker_path) {
1379         my $fn = $ENV{CONFIGURE_CHECKER_WARN}
1380             ? sub { warn $@; } : sub { die $@; };
1381         if (! do $checker_path) {
1382             if ($@) {
1383                 $fn->($@);
1384             } elsif ($!) {
1385                 $fn->($!);
1386             } else {
1387                 $fn->("The detected tools didn't match the platform\n");
1388             }
1389         }
1390         last;
1391     }
1392 }
1393
1394 push @{$config{defines}}, "NDEBUG"    if $config{build_type} eq "release";
1395
1396 if ($target =~ /^mingw/ && `$config{CC} --target-help 2>&1` =~ m/-mno-cygwin/m)
1397         {
1398         push @{$config{cflags}}, "-mno-cygwin";
1399         push @{$config{cxxflags}}, "-mno-cygwin" if $config{CXX};
1400         push @{$config{shared_ldflag}}, "-mno-cygwin";
1401         }
1402
1403 if ($target =~ /linux.*-mips/ && !$disabled{asm}
1404         && !grep { $_ !~ /-m(ips|arch=)/ } (@{$config{CFLAGS}})) {
1405         # minimally required architecture flags for assembly modules
1406         my $value;
1407         $value = '-mips2' if ($target =~ /mips32/);
1408         $value = '-mips3' if ($target =~ /mips64/);
1409         unshift @{$config{cflags}}, $value;
1410         unshift @{$config{cxxflags}}, $value if $config{CXX};
1411 }
1412
1413 # If threads aren't disabled, check how possible they are
1414 unless ($disabled{threads}) {
1415     if ($auto_threads) {
1416         # Enabled by default, disable it forcibly if unavailable
1417         if ($target{thread_scheme} eq "(unknown)") {
1418             disable("unavailable", 'threads');
1419         }
1420     } else {
1421         # The user chose to enable threads explicitly, let's see
1422         # if there's a chance that's possible
1423         if ($target{thread_scheme} eq "(unknown)") {
1424             # If the user asked for "threads" and we don't have internal
1425             # knowledge how to do it, [s]he is expected to provide any
1426             # system-dependent compiler options that are necessary.  We
1427             # can't truly check that the given options are correct, but
1428             # we expect the user to know what [s]He is doing.
1429             if (!@{$config{CFLAGS}} && !@{$config{CPPDEFINES}}) {
1430                 die "You asked for multi-threading support, but didn't\n"
1431                     ,"provide any system-specific compiler options\n";
1432             }
1433         }
1434     }
1435 }
1436
1437 # Find out if clang's sanitizers have been enabled with -fsanitize
1438 # flags and ensure that the corresponding %disabled elements area
1439 # removed to reflect that the sanitizers are indeed enabled.
1440 my %detected_sanitizers = ();
1441 foreach (grep /^-fsanitize=/, @{$config{CFLAGS} || []}) {
1442     (my $checks = $_) =~ s/^-fsanitize=//;
1443     foreach (split /,/, $checks) {
1444         my $d = { address       => 'asan',
1445                   undefined     => 'ubsan',
1446                   memory        => 'msan' } -> {$_};
1447         next unless defined $d;
1448
1449         $detected_sanitizers{$d} = 1;
1450         if (defined $disabled{$d}) {
1451             die "***** Conflict between disabling $d and enabling $_ sanitizer"
1452                 if $disabled{$d} ne "default";
1453             delete $disabled{$d};
1454         }
1455     }
1456 }
1457
1458 # If threads still aren't disabled, add a C macro to ensure the source
1459 # code knows about it.  Any other flag is taken care of by the configs.
1460 unless($disabled{threads}) {
1461     push @{$config{openssl_feature_defines}}, "OPENSSL_THREADS";
1462 }
1463
1464 my $no_shared_warn=0;
1465 if (($target{shared_target} // '') eq "")
1466         {
1467         $no_shared_warn = 1
1468             if (!$disabled{shared} || !$disabled{"dynamic-engine"});
1469         disable('no-shared-target', 'pic');
1470         }
1471
1472 if ($disabled{"dynamic-engine"}) {
1473         $config{dynamic_engines} = 0;
1474 } else {
1475         $config{dynamic_engines} = 1;
1476 }
1477
1478 unless ($disabled{asan} || defined $detected_sanitizers{asan}) {
1479     push @{$config{cflags}}, "-fsanitize=address";
1480 }
1481
1482 unless ($disabled{ubsan} || defined $detected_sanitizers{ubsan}) {
1483     # -DPEDANTIC or -fnosanitize=alignment may also be required on some
1484     # platforms.
1485     push @{$config{cflags}}, "-fsanitize=undefined", "-fno-sanitize-recover=all";
1486 }
1487
1488 unless ($disabled{msan} || defined $detected_sanitizers{msan}) {
1489   push @{$config{cflags}}, "-fsanitize=memory";
1490 }
1491
1492 unless ($disabled{"fuzz-libfuzzer"} && $disabled{"fuzz-afl"}
1493         && $disabled{asan} && $disabled{ubsan} && $disabled{msan}) {
1494     push @{$config{cflags}}, "-fno-omit-frame-pointer", "-g";
1495     push @{$config{cxxflags}}, "-fno-omit-frame-pointer", "-g" if $config{CXX};
1496 }
1497 #
1498 # Platform fix-ups
1499 #
1500
1501 # This saves the build files from having to check
1502 if ($disabled{pic})
1503         {
1504         foreach (qw(shared_cflag shared_cxxflag shared_cppflag
1505                     shared_defines shared_includes shared_ldflag
1506                     module_cflags module_cxxflags module_cppflags
1507                     module_defines module_includes module_lflags))
1508                 {
1509                 delete $config{$_};
1510                 $target{$_} = "";
1511                 }
1512         }
1513 else
1514         {
1515         push @{$config{lib_defines}}, "OPENSSL_PIC";
1516         }
1517
1518 if ($target{sys_id} ne "")
1519         {
1520         push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
1521         }
1522
1523 my %predefined_C = compiler_predefined($config{CROSS_COMPILE}.$config{CC});
1524 my %predefined_CXX = $config{CXX}
1525     ? compiler_predefined($config{CROSS_COMPILE}.$config{CXX})
1526     : ();
1527
1528 unless ($disabled{asm}) {
1529     # big endian systems can use ELFv2 ABI
1530     if ($target eq "linux-ppc64") {
1531         $target{perlasm_scheme} = "linux64v2" if ($predefined_C{_CALL_ELF} == 2);
1532     }
1533 }
1534
1535 # Check for makedepend capabilities.
1536 if (!$disabled{makedepend}) {
1537     # If the attribute makedep_scheme is defined, then we assume that the
1538     # config target and its associated build file are programmed to deal
1539     # with it.
1540     # If makedep_scheme is undefined, we go looking for GCC compatible
1541     # dependency making, and if that's not available, we try to fall back
1542     # on 'makedepend'.
1543     if ($target{makedep_scheme}) {
1544         $config{makedep_scheme} = $target{makedep_scheme};
1545         # If the makedepcmd attribute is defined, copy it.  If not, the
1546         # build files will have to fend for themselves.
1547         $config{makedepcmd} = $target{makedepcmd} if $target{makedepcmd};
1548     } elsif (($predefined_C{__GNUC__} // -1) >= 3
1549              && !($predefined_C{__APPLE_CC__} && !$predefined_C{__clang__})) {
1550         # We know that GNU C version 3 and up as well as all clang
1551         # versions support dependency generation, but Xcode did not
1552         # handle $cc -M before clang support (but claims __GNUC__ = 3)
1553         $config{makedep_scheme} = 'gcc';
1554     } else {
1555         # In all other cases, we look for 'makedepend', and set the
1556         # makedep_scheme value if we found it.
1557         $config{makedepcmd} = which('makedepend');
1558         $config{makedep_scheme} = 'makedepend' if $config{makedepcmd};
1559     }
1560
1561     # If no depend scheme is set, we disable makedepend
1562     disable('unavailable', 'makedepend') unless $config{makedep_scheme};
1563 }
1564
1565 if (!$disabled{asm} && !$predefined_C{__MACH__} && $^O ne 'VMS') {
1566     # probe for -Wa,--noexecstack option...
1567     if ($predefined_C{__clang__}) {
1568         # clang has builtin assembler, which doesn't recognize --help,
1569         # but it apparently recognizes the option in question on all
1570         # supported platforms even when it's meaningless. In other words
1571         # probe would fail, but probed option always accepted...
1572         push @{$config{cflags}}, "-Wa,--noexecstack", "-Qunused-arguments";
1573     } else {
1574         my $cc = $config{CROSS_COMPILE}.$config{CC};
1575         open(PIPE, "$cc -Wa,--help -c -o null.$$.o -x assembler /dev/null 2>&1 |");
1576         while(<PIPE>) {
1577             if (m/--noexecstack/) {
1578                 push @{$config{cflags}}, "-Wa,--noexecstack";
1579                 last;
1580             }
1581         }
1582         close(PIPE);
1583         unlink("null.$$.o");
1584     }
1585 }
1586
1587 # Deal with bn_ops ###################################################
1588
1589 $config{bn_ll}                  =0;
1590 my $def_int="unsigned int";
1591 $config{rc4_int}                =$def_int;
1592 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
1593
1594 my $count = 0;
1595 foreach (sort split(/\s+/,$target{bn_ops})) {
1596     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
1597     $config{bn_ll}=1                            if $_ eq 'BN_LLONG';
1598     $config{rc4_int}="unsigned char"            if $_ eq 'RC4_CHAR';
1599     ($config{b64l},$config{b64},$config{b32})
1600         =(0,1,0)                                if $_ eq 'SIXTY_FOUR_BIT';
1601     ($config{b64l},$config{b64},$config{b32})
1602         =(1,0,0)                                if $_ eq 'SIXTY_FOUR_BIT_LONG';
1603     ($config{b64l},$config{b64},$config{b32})
1604         =(0,0,1)                                if $_ eq 'THIRTY_TWO_BIT';
1605 }
1606 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
1607     if $count > 1;
1608
1609 $config{api} = $config{major} * 10000 + $config{minor} * 100
1610     unless $config{api};
1611 foreach (keys %$apitable) {
1612     $disabled{"deprecated-$_"} = "deprecation"
1613         if $disabled{deprecated} && $config{api} >= $apitable->{$_};
1614 }
1615
1616 disable();                      # Run a cascade now
1617
1618 # Hack cflags for better warnings (dev option) #######################
1619
1620 # "Stringify" the C and C++ flags string.  This permits it to be made part of
1621 # a string and works as well on command lines.
1622 $config{cflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
1623                         @{$config{cflags}} ];
1624 $config{cxxflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
1625                           @{$config{cxxflags}} ] if $config{CXX};
1626
1627 $config{openssl_api_defines} = [
1628     "OPENSSL_CONFIGURED_API=".$config{api},
1629 ];
1630
1631 my @strict_warnings_collection=();
1632 if ($strict_warnings)
1633         {
1634         my $wopt;
1635         my $gccver = $predefined_C{__GNUC__} // -1;
1636
1637         if ($gccver >= 4)
1638                 {
1639                 push @strict_warnings_collection, @gcc_devteam_warn;
1640                 push @strict_warnings_collection, @clang_devteam_warn
1641                     if (defined($predefined_C{__clang__}));
1642                 }
1643         elsif ($config{target} =~ /^VC-/)
1644                 {
1645                 push @strict_warnings_collection, @cl_devteam_warn;
1646                 }
1647         else
1648                 {
1649                 warn "WARNING --strict-warnings requires gcc[>=4] or gcc-alike, or MSVC"
1650                 }
1651         }
1652
1653 if (grep { $_ =~ /(?:^|\s)-static(?:\s|$)/ } @{$config{LDFLAGS}}) {
1654     disable('static', 'pic', 'threads');
1655 }
1656
1657 $config{CFLAGS} = [ map { $_ eq '--ossl-strict-warnings'
1658                               ? @strict_warnings_collection
1659                               : ( $_ ) }
1660                     @{$config{CFLAGS}} ];
1661
1662 unless ($disabled{afalgeng}) {
1663     $config{afalgeng}="";
1664     if (grep { $_ eq 'afalgeng' } @{$target{enable}}) {
1665         my $minver = 4*10000 + 1*100 + 0;
1666         if ($config{CROSS_COMPILE} eq "") {
1667             my $verstr = `uname -r`;
1668             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
1669             ($mi2) = $mi2 =~ /(\d+)/;
1670             my $ver = $ma*10000 + $mi1*100 + $mi2;
1671             if ($ver < $minver) {
1672                 disable('too-old-kernel', 'afalgeng');
1673             } else {
1674                 push @{$config{engdirs}}, "afalg";
1675             }
1676         } else {
1677             disable('cross-compiling', 'afalgeng');
1678         }
1679     } else {
1680         disable('not-linux', 'afalgeng');
1681     }
1682 }
1683
1684 unless ($disabled{devcryptoeng}) {
1685     if ($target =~ m/^BSD/) {
1686         my $maxver = 5*100 + 7;
1687         my $sysstr = `uname -s`;
1688         my $verstr = `uname -r`;
1689         $sysstr =~ s|\R$||;
1690         $verstr =~ s|\R$||;
1691         my ($ma, $mi, @rest) = split m|\.|, $verstr;
1692         my $ver = $ma*100 + $mi;
1693         if ($sysstr eq 'OpenBSD' && $ver >= $maxver) {
1694             disable('too-new-kernel', 'devcryptoeng');
1695         }
1696     }
1697 }
1698
1699 unless ($disabled{ktls}) {
1700     $config{ktls}="";
1701     if ($target =~ m/^linux/) {
1702         my $usr = "/usr/$config{cross_compile_prefix}";
1703         chop($usr);
1704         if ($config{cross_compile_prefix} eq "") {
1705             $usr = "/usr";
1706         }
1707         my $minver = (4 << 16) + (13 << 8) + 0;
1708         my @verstr = split(" ",`cat $usr/include/linux/version.h | grep LINUX_VERSION_CODE`);
1709
1710         if ($verstr[2] < $minver) {
1711             disable('too-old-kernel', 'ktls');
1712         }
1713     } elsif ($target =~ m/^BSD/) {
1714         my $cc = $config{CROSS_COMPILE}.$config{CC};
1715         system("printf '#include <sys/types.h>\n#include <sys/ktls.h>' | $cc -E - >/dev/null 2>&1");
1716         if ($? != 0) {
1717             disable('too-old-freebsd', 'ktls');
1718         }
1719     } else {
1720         disable('not-linux-or-freebsd', 'ktls');
1721     }
1722 }
1723
1724 push @{$config{openssl_other_defines}}, "OPENSSL_NO_KTLS" if ($disabled{ktls});
1725
1726 # Get the extra flags used when building shared libraries and modules.  We
1727 # do this late because some of them depend on %disabled.
1728
1729 # Make the flags to build DSOs the same as for shared libraries unless they
1730 # are already defined
1731 $target{module_cflags} = $target{shared_cflag} unless defined $target{module_cflags};
1732 $target{module_cxxflags} = $target{shared_cxxflag} unless defined $target{module_cxxflags};
1733 $target{module_ldflags} = $target{shared_ldflag} unless defined $target{module_ldflags};
1734 {
1735     my $shared_info_pl =
1736         catfile(dirname($0), "Configurations", "shared-info.pl");
1737     my %shared_info = read_eval_file($shared_info_pl);
1738     push @{$target{_conf_fname_int}}, $shared_info_pl;
1739     my $si = $target{shared_target};
1740     while (ref $si ne "HASH") {
1741         last if ! defined $si;
1742         if (ref $si eq "CODE") {
1743             $si = $si->();
1744         } else {
1745             $si = $shared_info{$si};
1746         }
1747     }
1748
1749     # Some of the 'shared_target' values don't have any entries in
1750     # %shared_info.  That's perfectly fine, AS LONG AS the build file
1751     # template knows how to handle this.  That is currently the case for
1752     # Windows and VMS.
1753     if (defined $si) {
1754         # Just as above, copy certain shared_* attributes to the corresponding
1755         # module_ attribute unless the latter is already defined
1756         $si->{module_cflags} = $si->{shared_cflag} unless defined $si->{module_cflags};
1757         $si->{module_cxxflags} = $si->{shared_cxxflag} unless defined $si->{module_cxxflags};
1758         $si->{module_ldflags} = $si->{shared_ldflag} unless defined $si->{module_ldflags};
1759         foreach (sort keys %$si) {
1760             $target{$_} = defined $target{$_}
1761                 ? add($si->{$_})->($target{$_})
1762                 : $si->{$_};
1763         }
1764     }
1765 }
1766
1767 # ALL MODIFICATIONS TO %disabled, %config and %target MUST BE DONE FROM HERE ON
1768
1769 ######################################################################
1770 # Build up information for skipping certain directories depending on disabled
1771 # features, as well as setting up macros for disabled features.
1772
1773 # This is a tentative database of directories to skip.  Some entries may not
1774 # correspond to anything real, but that's ok, they will simply be ignored.
1775 # The actual processing of these entries is done in the build.info lookup
1776 # loop further down.
1777 #
1778 # The key is a Unix formatted path in the source tree, the value is an index
1779 # into %disabled_info, so any existing path gets added to a corresponding
1780 # 'skipped' entry in there with the list of skipped directories.
1781 my %skipdir = ();
1782 my %disabled_info = ();         # For configdata.pm
1783 foreach my $what (sort keys %disabled) {
1784     # There are deprecated disablables that translate to themselves.
1785     # They cause disabling cascades, but should otherwise not regiter.
1786     next if $deprecated_disablables{$what};
1787     # The generated $disabled{"deprecated-x.y"} entries are special
1788     # and treated properly elsewhere
1789     next if $what =~ m|^deprecated-|;
1790
1791     $config{options} .= " no-$what";
1792
1793     if (!grep { $what eq $_ } ( 'buildtest-c++', 'fips', 'threads', 'shared',
1794                                 'module', 'pic', 'dynamic-engine', 'makedepend',
1795                                 'zlib-dynamic', 'zlib', 'sse2', 'legacy' )) {
1796         (my $WHAT = uc $what) =~ s|-|_|g;
1797         my $skipdir = $what;
1798
1799         # fix-up crypto/directory name(s)
1800         $skipdir = "ripemd" if $what eq "rmd160";
1801         $skipdir = "whrlpool" if $what eq "whirlpool";
1802
1803         my $macro = $disabled_info{$what}->{macro} = "OPENSSL_NO_$WHAT";
1804         push @{$config{openssl_feature_defines}}, $macro;
1805
1806         $skipdir{engines} = $what if $what eq 'engine';
1807         $skipdir{"crypto/$skipdir"} = $what
1808             unless $what eq 'async' || $what eq 'err' || $what eq 'dso';
1809     }
1810 }
1811
1812 if ($disabled{"dynamic-engine"}) {
1813     push @{$config{openssl_feature_defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
1814 } else {
1815     push @{$config{openssl_feature_defines}}, "OPENSSL_NO_STATIC_ENGINE";
1816 }
1817
1818 # If we use the unified build, collect information from build.info files
1819 my %unified_info = ();
1820
1821 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
1822 if ($builder eq "unified") {
1823     use Text::Template 1.46;
1824
1825     sub cleandir {
1826         my $base = shift;
1827         my $dir = shift;
1828         my $relativeto = shift || ".";
1829
1830         $dir = catdir($base,$dir) unless isabsolute($dir);
1831
1832         # Make sure the directories we're building in exists
1833         mkpath($dir);
1834
1835         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
1836         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
1837         return $res;
1838     }
1839
1840     sub cleanfile {
1841         my $base = shift;
1842         my $file = shift;
1843         my $relativeto = shift || ".";
1844
1845         $file = catfile($base,$file) unless isabsolute($file);
1846
1847         my $d = dirname($file);
1848         my $f = basename($file);
1849
1850         # Make sure the directories we're building in exists
1851         mkpath($d);
1852
1853         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
1854         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
1855         return $res;
1856     }
1857
1858     # Store the name of the template file we will build the build file from
1859     # in %config.  This may be useful for the build file itself.
1860     my @build_file_template_names =
1861         ( $builder_platform."-".$target{build_file}.".tmpl",
1862           $target{build_file}.".tmpl" );
1863     my @build_file_templates = ();
1864
1865     # First, look in the user provided directory, if given
1866     if (defined env($local_config_envname)) {
1867         @build_file_templates =
1868             map {
1869                 if ($^O eq 'VMS') {
1870                     # VMS environment variables are logical names,
1871                     # which can be used as is
1872                     $local_config_envname . ':' . $_;
1873                 } else {
1874                     catfile(env($local_config_envname), $_);
1875                 }
1876             }
1877             @build_file_template_names;
1878     }
1879     # Then, look in our standard directory
1880     push @build_file_templates,
1881         ( map { cleanfile($srcdir, catfile("Configurations", $_), $blddir) }
1882           @build_file_template_names );
1883
1884     my $build_file_template;
1885     for $_ (@build_file_templates) {
1886         $build_file_template = $_;
1887         last if -f $build_file_template;
1888
1889         $build_file_template = undef;
1890     }
1891     if (!defined $build_file_template) {
1892         die "*** Couldn't find any of:\n", join("\n", @build_file_templates), "\n";
1893     }
1894     $config{build_file_templates}
1895       = [ cleanfile($srcdir, catfile("Configurations", "common0.tmpl"),
1896                     $blddir),
1897           $build_file_template,
1898           cleanfile($srcdir, catfile("Configurations", "common.tmpl"),
1899                     $blddir) ];
1900
1901     my @build_dirs = ( [ ] );   # current directory
1902
1903     $config{build_infos} = [ ];
1904
1905     # We want to detect configdata.pm in the source tree, so we
1906     # don't use it if the build tree is different.
1907     my $src_configdata = cleanfile($srcdir, "configdata.pm", $blddir);
1908
1909     # Any source file that we recognise is placed in this hash table, with
1910     # the list of its intended destinations as value.  When everything has
1911     # been collected, there's a routine that checks that these source files
1912     # exist, or if they are generated, that the generator exists.
1913     my %check_exist = ();
1914     my %check_generate = ();
1915
1916     my %ordinals = ();
1917     while (@build_dirs) {
1918         my @curd = @{shift @build_dirs};
1919         my $sourced = catdir($srcdir, @curd);
1920         my $buildd = catdir($blddir, @curd);
1921
1922         my $unixdir = join('/', @curd);
1923         if (exists $skipdir{$unixdir}) {
1924             my $what = $skipdir{$unixdir};
1925             push @{$disabled_info{$what}->{skipped}}, catdir(@curd);
1926             next;
1927         }
1928
1929         mkpath($buildd);
1930
1931         my $f = 'build.info';
1932         # The basic things we're trying to build
1933         my @programs = ();
1934         my @libraries = ();
1935         my @modules = ();
1936         my @scripts = ();
1937
1938         my %sources = ();
1939         my %shared_sources = ();
1940         my %includes = ();
1941         my %defines = ();
1942         my %depends = ();
1943         my %generate = ();
1944         my %htmldocs = ();
1945         my %mandocs = ();
1946
1947         # Support for $variablename in build.info files.
1948         # Embedded perl code is the ultimate master, still.  If its output
1949         # contains a dollar sign, it had better be escaped, or it will be
1950         # taken for a variable name prefix.
1951         my %variables = ();
1952         # Variable name syntax
1953         my $variable_name_re = qr/(?P<VARIABLE>[[:alpha:]][[:alnum:]_]*)/;
1954         # Value modifier syntaxes
1955         my $variable_subst_re = qr/\/(?P<RE>(?:\\\/|.)*?)\/(?P<SUBST>.*?)/;
1956         # Variable reference
1957         my $variable_simple_re = qr/(?<!\\)\$${variable_name_re}/;
1958         my $variable_w_mod_re =
1959             qr/(?<!\\)\$\{${variable_name_re}(?P<MOD>(?:\\\/|.)*?)\}/;
1960         # Tie it all together
1961         my $variable_re = qr/${variable_simple_re}|${variable_w_mod_re}/;
1962
1963         my $expand_variables = sub {
1964             my $value = '';
1965             my $value_rest = shift;
1966
1967             if ($ENV{CONFIGURE_DEBUG_VARIABLE_EXPAND}) {
1968                 print STDERR
1969                     "DEBUG[\$expand_variables] Parsed '$value_rest' ...\n"
1970             }
1971
1972             while ($value_rest =~ /${variable_re}/) {
1973                 # We must save important regexp values, because the next
1974                 # regexp clears them
1975                 my $mod = $+{MOD};
1976                 my $variable_value = $variables{$+{VARIABLE}};
1977
1978                 $value_rest = $';
1979                 $value .= $`;
1980
1981                 # Process modifier expressions, if present
1982                 if (defined $mod) {
1983                     if ($mod =~ /^${variable_subst_re}$/) {
1984                         my $re = $+{RE};
1985                         my $subst = $+{SUBST};
1986
1987                         $variable_value =~ s/\Q$re\E/$subst/g;
1988
1989                         if ($ENV{CONFIGURE_DEBUG_VARIABLE_EXPAND}) {
1990                             print STDERR
1991                                 "DEBUG[\$expand_variables] ... and substituted ",
1992                                 "'$re' with '$subst'\n";
1993                         }
1994                     }
1995                 }
1996
1997                 $value .= $variable_value;
1998             }
1999             if ($ENV{CONFIGURE_DEBUG_VARIABLE_EXPAND}) {
2000                 print STDERR
2001                     "DEBUG[\$expand_variables] ... into: '$value$value_rest'\n";
2002             }
2003             return $value . $value_rest;
2004         };
2005
2006         # Support for attributes in build.info files
2007         my %attributes = ();
2008         my $handle_attributes = sub {
2009             my $attr_str = shift;
2010             my $ref = shift;
2011             my @goals = @_;
2012
2013             return unless defined $attr_str;
2014
2015             my @a = tokenize($attr_str, qr|\s*,\s*|);
2016             foreach my $a (@a) {
2017                 my $ac = 1;
2018                 my $ak = $a;
2019                 my $av = 1;
2020                 if ($a =~ m|^(!)?(.*?)\s* = \s*(.*?)$|x) {
2021                     $ac = ! $1;
2022                     $ak = $2;
2023                     $av = $3;
2024                 }
2025                 foreach my $g (@goals) {
2026                     if ($ac) {
2027                         $$ref->{$g}->{$ak} = $av;
2028                     } else {
2029                         delete $$ref->{$g}->{$ak};
2030                     }
2031                 }
2032             }
2033         };
2034
2035         # Support for pushing values on multiple indexes of a given hash
2036         # array.
2037         my $push_to = sub {
2038             my $valueref = shift;
2039             my $index_str = shift; # May be undef or empty
2040             my $attrref = shift;   # May be undef
2041             my $attr_str = shift;
2042             my @values = @_;
2043
2044             if (defined $index_str) {
2045                 my @indexes = ( '' );
2046                 if ($index_str !~ m|^\s*$|) {
2047                     @indexes = tokenize($index_str);
2048                 }
2049                 foreach (@indexes) {
2050                     push @{$valueref->{$_}}, @values;
2051                     if (defined $attrref) {
2052                         $handle_attributes->($attr_str, \$$attrref->{$_},
2053                                              @values);
2054                     }
2055                 }
2056             } else {
2057                 push @$valueref, @values;
2058                 $handle_attributes->($attr_str, $attrref, @values)
2059                     if defined $attrref;
2060             }
2061         };
2062
2063         if ($buildinfo_debug) {
2064             print STDERR "DEBUG: Reading ",catfile($sourced, $f),"\n";
2065         }
2066         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
2067         my $template =
2068             Text::Template->new(TYPE => 'FILE',
2069                                 SOURCE => catfile($sourced, $f),
2070                                 PREPEND => qq{use lib "$FindBin::Bin/util/perl";});
2071         die "Something went wrong with $sourced/$f: $!\n" unless $template;
2072         my @text =
2073             split /^/m,
2074             $template->fill_in(HASH => { config => \%config,
2075                                          target => \%target,
2076                                          disabled => \%disabled,
2077                                          withargs => \%withargs,
2078                                          builddir => abs2rel($buildd, $blddir),
2079                                          sourcedir => abs2rel($sourced, $blddir),
2080                                          buildtop => abs2rel($blddir, $blddir),
2081                                          sourcetop => abs2rel($srcdir, $blddir) },
2082                                DELIMITERS => [ "{-", "-}" ]);
2083
2084         # The top item of this stack has the following values
2085         # -2 positive already run and we found ELSE (following ELSIF should fail)
2086         # -1 positive already run (skip until ENDIF)
2087         # 0 negatives so far (if we're at a condition, check it)
2088         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
2089         # 2 positive ELSE (following ELSIF should fail)
2090         my @skip = ();
2091
2092         # A few useful generic regexps
2093         my $index_re = qr/\[\s*(?P<INDEX>(?:\\.|.)*?)\s*\]/;
2094         my $cond_re = qr/\[\s*(?P<COND>(?:\\.|.)*?)\s*\]/;
2095         my $attribs_re = qr/(?:\{\s*(?P<ATTRIBS>(?:\\.|.)*?)\s*\})?/;
2096         my $value_re = qr/\s*(?P<VALUE>.*?)\s*/;
2097         collect_information(
2098             collect_from_array([ @text ],
2099                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
2100                                                 $l1 =~ s/\\$//; $l1.$l2 }),
2101             # Info we're looking for
2102             qr/^\s* IF ${cond_re} \s*$/x
2103             => sub {
2104                 if (! @skip || $skip[$#skip] > 0) {
2105                     push @skip, !! $expand_variables->($+{COND});
2106                 } else {
2107                     push @skip, -1;
2108                 }
2109             },
2110             qr/^\s* ELSIF ${cond_re} \s*$/x
2111             => sub { die "ELSIF out of scope" if ! @skip;
2112                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
2113                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
2114                      $skip[$#skip] = !! $expand_variables->($+{COND})
2115                          if $skip[$#skip] == 0; },
2116             qr/^\s* ELSE \s*$/x
2117             => sub { die "ELSE out of scope" if ! @skip;
2118                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
2119                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
2120             qr/^\s* ENDIF \s*$/x
2121             => sub { die "ENDIF out of scope" if ! @skip;
2122                      pop @skip; },
2123             qr/^\s* ${variable_re} \s* = ${value_re} $/x
2124             => sub {
2125                 if (!@skip || $skip[$#skip] > 0) {
2126                     $variables{$+{VARIABLE}} = $expand_variables->($+{VALUE});
2127                 }
2128             },
2129             qr/^\s* SUBDIRS \s* = ${value_re} $/x
2130             => sub {
2131                 if (!@skip || $skip[$#skip] > 0) {
2132                     foreach (tokenize($expand_variables->($+{VALUE}))) {
2133                         push @build_dirs, [ @curd, splitdir($_, 1) ];
2134                     }
2135                 }
2136             },
2137             qr/^\s* PROGRAMS ${attribs_re} \s* =  ${value_re} $/x
2138             => sub { $push_to->(\@programs, undef,
2139                                 \$attributes{programs}, $+{ATTRIBS},
2140                                 tokenize($expand_variables->($+{VALUE})))
2141                          if !@skip || $skip[$#skip] > 0; },
2142             qr/^\s* LIBS ${attribs_re} \s* =  ${value_re} $/x
2143             => sub { $push_to->(\@libraries, undef,
2144                                 \$attributes{libraries}, $+{ATTRIBS},
2145                                 tokenize($expand_variables->($+{VALUE})))
2146                          if !@skip || $skip[$#skip] > 0; },
2147             qr/^\s* MODULES ${attribs_re} \s* =  ${value_re} $/x
2148             => sub { $push_to->(\@modules, undef,
2149                                 \$attributes{modules}, $+{ATTRIBS},
2150                                 tokenize($expand_variables->($+{VALUE})))
2151                          if !@skip || $skip[$#skip] > 0; },
2152             qr/^\s* SCRIPTS ${attribs_re} \s* =  ${value_re} $/x
2153             => sub { $push_to->(\@scripts, undef,
2154                                 \$attributes{scripts}, $+{ATTRIBS},
2155                                 tokenize($expand_variables->($+{VALUE})))
2156                          if !@skip || $skip[$#skip] > 0; },
2157             qr/^\s* HTMLDOCS ${index_re} = ${value_re} $/x
2158             => sub { $push_to->(\%htmldocs, $expand_variables->($+{INDEX}),
2159                                 undef, undef,
2160                                 tokenize($expand_variables->($+{VALUE})))
2161                          if !@skip || $skip[$#skip] > 0; },
2162             qr/^\s* MANDOCS ${index_re} = ${value_re} $/x
2163             => sub { $push_to->(\%mandocs, $expand_variables->($+{INDEX}),
2164                                 undef, undef,
2165                                 tokenize($expand_variables->($+{VALUE})))
2166                          if !@skip || $skip[$#skip] > 0; },
2167             qr/^\s* SOURCE ${index_re} = ${value_re} $/x
2168             => sub { $push_to->(\%sources, $expand_variables->($+{INDEX}),
2169                                 undef, undef,
2170                                 tokenize($expand_variables->($+{VALUE})))
2171                          if !@skip || $skip[$#skip] > 0; },
2172             qr/^\s* SHARED_SOURCE ${index_re} = ${value_re} $/x
2173             => sub { $push_to->(\%shared_sources, $expand_variables->($+{INDEX}),
2174                                 undef, undef,
2175                                 tokenize($expand_variables->($+{VALUE})))
2176                          if !@skip || $skip[$#skip] > 0; },
2177             qr/^\s* INCLUDE ${index_re} = ${value_re} $/x
2178             => sub { $push_to->(\%includes, $expand_variables->($+{INDEX}),
2179                                 undef, undef,
2180                                 tokenize($expand_variables->($+{VALUE})))
2181                          if !@skip || $skip[$#skip] > 0; },
2182             qr/^\s* DEFINE ${index_re} = ${value_re} $/x
2183             => sub { $push_to->(\%defines, $expand_variables->($+{INDEX}),
2184                                 undef, undef,
2185                                 tokenize($expand_variables->($+{VALUE})))
2186                          if !@skip || $skip[$#skip] > 0; },
2187             qr/^\s* DEPEND ${index_re} ${attribs_re} = ${value_re} $/x
2188             => sub { $push_to->(\%depends, $expand_variables->($+{INDEX}),
2189                                 \$attributes{depends}, $+{ATTRIBS},
2190                                 tokenize($expand_variables->($+{VALUE})))
2191                          if !@skip || $skip[$#skip] > 0; },
2192             qr/^\s* GENERATE ${index_re} = ${value_re} $/x
2193             => sub { $push_to->(\%generate, $expand_variables->($+{INDEX}),
2194                                 undef, undef, $+{VALUE})
2195                          if !@skip || $skip[$#skip] > 0; },
2196             qr/^\s* (?:\#.*)? $/x => sub { },
2197             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
2198             "BEFORE" => sub {
2199                 if ($buildinfo_debug) {
2200                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
2201                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
2202                 }
2203             },
2204             "AFTER" => sub {
2205                 if ($buildinfo_debug) {
2206                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
2207                 }
2208             },
2209             );
2210         die "runaway IF?" if (@skip);
2211
2212         if (grep { defined $attributes{modules}->{$_}->{engine} } keys %attributes
2213                 and !$config{dynamic_engines}) {
2214             die <<"EOF"
2215 ENGINES can only be used if configured with 'dynamic-engine'.
2216 This is usually a fault in a build.info file.
2217 EOF
2218         }
2219
2220         {
2221             my %infos = ( programs  => [ @programs  ],
2222                           libraries => [ @libraries ],
2223                           modules   => [ @modules   ],
2224                           scripts   => [ @scripts   ] );
2225             foreach my $k (keys %infos) {
2226                 foreach (@{$infos{$k}}) {
2227                     my $item = cleanfile($buildd, $_, $blddir);
2228                     $unified_info{$k}->{$item} = 1;
2229
2230                     # Fix up associated attributes
2231                     $unified_info{attributes}->{$k}->{$item} =
2232                         $attributes{$k}->{$_}
2233                         if defined $attributes{$k}->{$_};
2234                 }
2235             }
2236         }
2237
2238         # Check that we haven't defined any library as both shared and
2239         # explicitly static.  That is forbidden.
2240         my @doubles = ();
2241         foreach (grep /\.a$/, keys %{$unified_info{libraries}}) {
2242             (my $l = $_) =~ s/\.a$//;
2243             push @doubles, $l if defined $unified_info{libraries}->{$l};
2244         }
2245         die "these libraries are both explicitly static and shared:\n  ",
2246             join(" ", @doubles), "\n"
2247             if @doubles;
2248
2249         foreach (keys %sources) {
2250             my $dest = $_;
2251             my $ddest = cleanfile($buildd, $_, $blddir);
2252             foreach (@{$sources{$dest}}) {
2253                 my $s = cleanfile($sourced, $_, $blddir);
2254
2255                 # If it's generated or we simply don't find it in the source
2256                 # tree, we assume it's in the build tree.
2257                 if ($s eq $src_configdata || $generate{$_} || ! -f $s) {
2258                     $s = cleanfile($buildd, $_, $blddir);
2259                 }
2260                 # We recognise C++, C and asm files
2261                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2262                     push @{$check_exist{$s}}, $ddest;
2263                     my $o = $_;
2264                     $o =~ s/\.[csS]$/.o/; # C and assembler
2265                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2266                     $o = cleanfile($buildd, $o, $blddir);
2267                     $unified_info{sources}->{$ddest}->{$o} = -1;
2268                     $unified_info{sources}->{$o}->{$s} = -1;
2269                 } elsif ($s =~ /\.rc$/) {
2270                     # We also recognise resource files
2271                     push @{$check_exist{$s}}, $ddest;
2272                     my $o = $_;
2273                     $o =~ s/\.rc$/.res/; # Resource configuration
2274                     $o = cleanfile($buildd, $o, $blddir);
2275                     $unified_info{sources}->{$ddest}->{$o} = -1;
2276                     $unified_info{sources}->{$o}->{$s} = -1;
2277                 } else {
2278                     push @{$check_exist{$s}}, $ddest;
2279                     $unified_info{sources}->{$ddest}->{$s} = 1;
2280                 }
2281             }
2282         }
2283
2284         foreach (keys %shared_sources) {
2285             my $dest = $_;
2286             my $ddest = cleanfile($buildd, $_, $blddir);
2287             foreach (@{$shared_sources{$dest}}) {
2288                 my $s = cleanfile($sourced, $_, $blddir);
2289
2290                 # If it's generated or we simply don't find it in the source
2291                 # tree, we assume it's in the build tree.
2292                 if ($s eq $src_configdata || $generate{$_} || ! -f $s) {
2293                     $s = cleanfile($buildd, $_, $blddir);
2294                 }
2295
2296                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2297                     # We recognise C++, C and asm files
2298                     push @{$check_exist{$s}}, $ddest;
2299                     my $o = $_;
2300                     $o =~ s/\.[csS]$/.o/; # C and assembler
2301                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2302                     $o = cleanfile($buildd, $o, $blddir);
2303                     $unified_info{shared_sources}->{$ddest}->{$o} = -1;
2304                     $unified_info{sources}->{$o}->{$s} = -1;
2305                 } elsif ($s =~ /\.rc$/) {
2306                     # We also recognise resource files
2307                     push @{$check_exist{$s}}, $ddest;
2308                     my $o = $_;
2309                     $o =~ s/\.rc$/.res/; # Resource configuration
2310                     $o = cleanfile($buildd, $o, $blddir);
2311                     $unified_info{shared_sources}->{$ddest}->{$o} = -1;
2312                     $unified_info{sources}->{$o}->{$s} = -1;
2313                 } elsif ($s =~ /\.ld$/) {
2314                     # We also recognise linker scripts (or corresponding)
2315                     # We know they are generated files
2316                     push @{$check_exist{$s}}, $ddest;
2317                     my $ld = cleanfile($buildd, $_, $blddir);
2318                     $unified_info{shared_sources}->{$ddest}->{$ld} = 1;
2319                 } else {
2320                     die "unrecognised source file type for shared library: $s\n";
2321                 }
2322             }
2323         }
2324
2325         foreach (keys %generate) {
2326             my $dest = $_;
2327             my $ddest = cleanfile($buildd, $_, $blddir);
2328             die "more than one generator for $dest: "
2329                 ,join(" ", @{$generate{$_}}),"\n"
2330                 if scalar @{$generate{$_}} > 1;
2331             my @generator = split /\s+/, $generate{$dest}->[0];
2332             my $gen = $generator[0];
2333             $generator[0] = cleanfile($sourced, $gen, $blddir);
2334
2335             # If the generator is itself generated, it's in the build tree
2336             if ($generate{$gen} || ! -f $generator[0]) {
2337                 $generator[0] = cleanfile($buildd, $gen, $blddir);
2338             }
2339             $check_generate{$ddest}->{$generator[0]}++;
2340
2341             $unified_info{generate}->{$ddest} = [ @generator ];
2342         }
2343
2344         foreach (keys %depends) {
2345             my $dest = $_;
2346             my $ddest = $dest;
2347
2348             if ($dest =~ /^\|(.*)\|$/) {
2349                 # Collect the raw target
2350                 $unified_info{targets}->{$1} = 1;
2351                 $ddest = $1;
2352             } elsif ($dest eq '') {
2353                 $ddest = '';
2354             } else {
2355                 $ddest = cleanfile($sourced, $_, $blddir);
2356
2357                 # If the destination doesn't exist in source, it can only be
2358                 # a generated file in the build tree.
2359                 if ($ddest eq $src_configdata || ! -f $ddest) {
2360                     $ddest = cleanfile($buildd, $_, $blddir);
2361                 }
2362             }
2363             foreach (@{$depends{$dest}}) {
2364                 my $d = cleanfile($sourced, $_, $blddir);
2365                 my $d2 = cleanfile($buildd, $_, $blddir);
2366
2367                 # If we know it's generated, or assume it is because we can't
2368                 # find it in the source tree, we set file we depend on to be
2369                 # in the build tree rather than the source tree.
2370                 if ($d eq $src_configdata
2371                     || (grep { $d2 eq $_ }
2372                         keys %{$unified_info{generate}})
2373                     || ! -f $d) {
2374                     $d = $d2;
2375                 }
2376                 $unified_info{depends}->{$ddest}->{$d} = 1;
2377
2378                 # Fix up associated attributes
2379                 $unified_info{attributes}->{depends}->{$ddest}->{$d} =
2380                     $attributes{depends}->{$dest}->{$_}
2381                     if defined $attributes{depends}->{$dest}->{$_};
2382             }
2383         }
2384
2385         foreach (keys %includes) {
2386             my $dest = $_;
2387             my $ddest = cleanfile($sourced, $_, $blddir);
2388
2389             # If the destination doesn't exist in source, it can only be
2390             # a generated file in the build tree.
2391             if ($ddest eq $src_configdata || ! -f $ddest) {
2392                 $ddest = cleanfile($buildd, $_, $blddir);
2393             }
2394             foreach (@{$includes{$dest}}) {
2395                 my $is = cleandir($sourced, $_, $blddir);
2396                 my $ib = cleandir($buildd, $_, $blddir);
2397                 push @{$unified_info{includes}->{$ddest}->{source}}, $is
2398                     unless grep { $_ eq $is } @{$unified_info{includes}->{$ddest}->{source}};
2399                 push @{$unified_info{includes}->{$ddest}->{build}}, $ib
2400                     unless grep { $_ eq $ib } @{$unified_info{includes}->{$ddest}->{build}};
2401             }
2402         }
2403
2404         foreach my $dest (keys %defines) {
2405             my $ddest;
2406
2407             if ($dest ne "") {
2408                 $ddest = cleanfile($sourced, $dest, $blddir);
2409
2410                 # If the destination doesn't exist in source, it can only
2411                 # be a generated file in the build tree.
2412                 if (! -f $ddest) {
2413                     $ddest = cleanfile($buildd, $dest, $blddir);
2414                 }
2415             }
2416             foreach my $v (@{$defines{$dest}}) {
2417                 $v =~ m|^([^=]*)(=.*)?$|;
2418                 die "0 length macro name not permitted\n" if $1 eq "";
2419                 if ($dest ne "") {
2420                     die "$1 defined more than once\n"
2421                         if defined $unified_info{defines}->{$ddest}->{$1};
2422                     $unified_info{defines}->{$ddest}->{$1} = $2;
2423                 } else {
2424                     die "$1 defined more than once\n"
2425                         if grep { $v eq $_ } @{$config{defines}};
2426                     push @{$config{defines}}, $v;
2427                 }
2428             }
2429         }
2430
2431         foreach my $section (keys %htmldocs) {
2432             foreach (@{$htmldocs{$section}}) {
2433                 my $htmldocs = cleanfile($buildd, $_, $blddir);
2434                 $unified_info{htmldocs}->{$section}->{$htmldocs} = 1;
2435             }
2436         }
2437
2438         foreach my $section (keys %mandocs) {
2439             foreach (@{$mandocs{$section}}) {
2440                 my $mandocs = cleanfile($buildd, $_, $blddir);
2441                 $unified_info{mandocs}->{$section}->{$mandocs} = 1;
2442             }
2443         }
2444     }
2445
2446     my $ordinals_text = join(', ', sort keys %ordinals);
2447     warn <<"EOF" if $ordinals_text;
2448
2449 WARNING: ORDINALS were specified for $ordinals_text
2450 They are ignored and should be replaced with a combination of GENERATE,
2451 DEPEND and SHARED_SOURCE.
2452 EOF
2453
2454     # Check that each generated file is only generated once
2455     my $ambiguous_generation = 0;
2456     foreach (sort keys %check_generate) {
2457         my @generators = sort keys %{$check_generate{$_}};
2458         my $generators_txt = join(', ', @generators);
2459         if (scalar @generators > 1) {
2460             warn "$_ is GENERATEd by more than one generator ($generators_txt)\n";
2461             $ambiguous_generation++;
2462         }
2463         if ($check_generate{$_}->{$generators[0]} > 1) {
2464             warn "INFO: $_ has more than one GENERATE declaration (same generator)\n"
2465         }
2466     }
2467     die "There are ambiguous source file generations\n"
2468         if $ambiguous_generation > 0;
2469
2470     # All given source files should exist, or if generated, their
2471     # generator should exist.  This loop ensures this is true.
2472     my $missing = 0;
2473     foreach my $orig (sort keys %check_exist) {
2474         foreach my $dest (@{$check_exist{$orig}}) {
2475             if ($orig ne $src_configdata) {
2476                 if ($orig =~ /\.a$/) {
2477                     # Static library names may be used as sources, so we
2478                     # need to detect those and give them special treatment.
2479                     unless (grep { $_ eq $orig }
2480                             keys %{$unified_info{libraries}}) {
2481                         warn "$orig is given as source for $dest, but no such library is built\n";
2482                         $missing++;
2483                     }
2484                 } else {
2485                     # A source may be generated, and its generator may be
2486                     # generated as well.  We therefore loop to dig out the
2487                     # first generator.
2488                     my $gen = $orig;
2489
2490                     while (my @next = keys %{$check_generate{$gen}}) {
2491                         $gen = $next[0];
2492                     }
2493
2494                     if (! -f $gen) {
2495                         if ($gen ne $orig) {
2496                             $missing++;
2497                             warn "$orig is given as source for $dest, but its generator (leading to $gen) is missing\n";
2498                         } else {
2499                             $missing++;
2500                             warn "$orig is given as source for $dest, but is missing\n";
2501                         }
2502                     }
2503                 }
2504             }
2505         }
2506     }
2507     die "There are files missing\n" if $missing > 0;
2508
2509     # Go through the sources of all libraries and check that the same basename
2510     # doesn't appear more than once.  Some static library archivers depend on
2511     # them being unique.
2512     {
2513         my $err = 0;
2514         foreach my $prod (keys %{$unified_info{libraries}}) {
2515             my @prod_sources =
2516                 map { keys %{$unified_info{sources}->{$_}} }
2517                 keys %{$unified_info{sources}->{$prod}};
2518             my %srccnt = ();
2519
2520             # Count how many times a given each source basename
2521             # appears for each product.
2522             foreach my $src (@prod_sources) {
2523                 $srccnt{basename $src}++;
2524             }
2525
2526             foreach my $src (keys %srccnt) {
2527                 if ((my $cnt = $srccnt{$src}) > 1) {
2528                     print STDERR "$src appears $cnt times for the product $prod\n";
2529                     $err++
2530                 }
2531             }
2532         }
2533         die if $err > 0;
2534     }
2535
2536     # Massage the result
2537
2538     # If we depend on a header file or a perl module, add an inclusion of
2539     # its directory to allow smoothe inclusion
2540     foreach my $dest (keys %{$unified_info{depends}}) {
2541         next if $dest eq "";
2542         foreach my $d (keys %{$unified_info{depends}->{$dest}}) {
2543             next unless $d =~ /\.(h|pm)$/;
2544             my $i = dirname($d);
2545             my $spot =
2546                 $d eq "configdata.pm" || defined($unified_info{generate}->{$d})
2547                 ? 'build' : 'source';
2548             push @{$unified_info{includes}->{$dest}->{$spot}}, $i
2549                 unless grep { $_ eq $i } @{$unified_info{includes}->{$dest}->{$spot}};
2550         }
2551     }
2552
2553     # Go through all intermediary files and change their names to something that
2554     # reflects what they will be built for.  Note that for some source files,
2555     # this leads to duplicate object files because they are used multiple times.
2556     # the goal is to rename all object files according to this scheme:
2557     #    {productname}-{midfix}-{origobjname}.[o|res]
2558     # the {midfix} is a keyword indicating the type of product, which is mostly
2559     # valuable for libraries since they come in two forms.
2560     #
2561     # This also reorganises the {sources} and {shared_sources} so that the
2562     # former only contains ALL object files that are supposed to end up in
2563     # static libraries and programs, while the latter contains ALL object files
2564     # that are supposed to end up in shared libraries and DSOs.
2565     # The main reason for having two different source structures is to allow
2566     # the same name to be used for the static and the shared variants of a
2567     # library.
2568     {
2569         # Take copies so we don't get interference from added stuff
2570         my %unified_copy = ();
2571         foreach (('sources', 'shared_sources')) {
2572             $unified_copy{$_} = { %{$unified_info{$_}} }
2573                 if defined($unified_info{$_});
2574             delete $unified_info{$_};
2575         }
2576         foreach my $prodtype (('programs', 'libraries', 'modules', 'scripts')) {
2577             # $intent serves multi purposes:
2578             # - give a prefix for the new object files names
2579             # - in the case of libraries, rearrange the object files so static
2580             #   libraries use the 'sources' structure exclusively, while shared
2581             #   libraries use the 'shared_sources' structure exclusively.
2582             my $intent = {
2583                 programs  => { bin    => { src => [ 'sources' ],
2584                                            dst => 'sources' } },
2585                 libraries => { lib    => { src => [ 'sources' ],
2586                                            dst => 'sources' },
2587                                shlib  => { prodselect =>
2588                                                sub { grep !/\.a$/, @_ },
2589                                            src => [ 'sources',
2590                                                     'shared_sources' ],
2591                                            dst => 'shared_sources' } },
2592                 modules   => { dso    => { src => [ 'sources' ],
2593                                            dst => 'sources' } },
2594                 scripts   => { script => { src => [ 'sources' ],
2595                                            dst => 'sources' } }
2596                } -> {$prodtype};
2597             foreach my $kind (keys %$intent) {
2598                 next if ($intent->{$kind}->{dst} eq 'shared_sources'
2599                              && $disabled{shared});
2600
2601                 my @src = @{$intent->{$kind}->{src}};
2602                 my $dst = $intent->{$kind}->{dst};
2603                 my $prodselect = $intent->{$kind}->{prodselect} // sub { @_ };
2604                 foreach my $prod ($prodselect->(keys %{$unified_info{$prodtype}})) {
2605                     # %prod_sources has all applicable objects as keys, and
2606                     # their corresponding sources as values
2607                     my %prod_sources =
2608                         map { $_ => [ keys %{$unified_copy{sources}->{$_}} ] }
2609                         map { keys %{$unified_copy{$_}->{$prod}} }
2610                         @src;
2611                     foreach (keys %prod_sources) {
2612                         # Only affect object files and resource files,
2613                         # the others simply get a new value
2614                         # (+1 instead of -1)
2615                         if ($_ =~ /\.(o|res)$/) {
2616                             (my $prodname = $prod) =~ s|\.a$||;
2617                             my $newobj =
2618                                 catfile(dirname($_),
2619                                         basename($prodname)
2620                                             . '-' . $kind
2621                                             . '-' . basename($_));
2622                             $unified_info{$dst}->{$prod}->{$newobj} = 1;
2623                             foreach my $src (@{$prod_sources{$_}}) {
2624                                 $unified_info{sources}->{$newobj}->{$src} = 1;
2625                             }
2626                             # Adjust dependencies
2627                             foreach my $deps (keys %{$unified_info{depends}->{$_}}) {
2628                                 $unified_info{depends}->{$_}->{$deps} = -1;
2629                                 $unified_info{depends}->{$newobj}->{$deps} = 1;
2630                             }
2631                             # Adjust includes
2632                             foreach my $k (('source', 'build')) {
2633                                 next unless
2634                                     defined($unified_info{includes}->{$_}->{$k});
2635                                 my @incs = @{$unified_info{includes}->{$_}->{$k}};
2636                                 $unified_info{includes}->{$newobj}->{$k} = [ @incs ];
2637                             }
2638                         } else {
2639                             $unified_info{$dst}->{$prod}->{$_} = 1;
2640                         }
2641                     }
2642                 }
2643             }
2644         }
2645     }
2646
2647     # At this point, we have a number of sources with the value -1.  They
2648     # aren't part of the local build and are probably meant for a different
2649     # platform, and can therefore be cleaned away.  That happens when making
2650     # %unified_info more efficient below.
2651
2652     ### Make unified_info a bit more efficient
2653     # One level structures
2654     foreach (("programs", "libraries", "modules", "scripts", "targets")) {
2655         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
2656     }
2657     # Two level structures
2658     foreach my $l1 (("sources", "shared_sources", "ldadd", "depends",
2659                      "htmldocs", "mandocs")) {
2660         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
2661             my @items =
2662                 sort
2663                 grep { $unified_info{$l1}->{$l2}->{$_} > 0 }
2664                 keys %{$unified_info{$l1}->{$l2}};
2665             if (@items) {
2666                 $unified_info{$l1}->{$l2} = [ @items ];
2667             } else {
2668                 delete $unified_info{$l1}->{$l2};
2669             }
2670         }
2671     }
2672     # Defines
2673     foreach my $dest (sort keys %{$unified_info{defines}}) {
2674         $unified_info{defines}->{$dest}
2675             = [ map { $_.$unified_info{defines}->{$dest}->{$_} }
2676                 sort keys %{$unified_info{defines}->{$dest}} ];
2677     }
2678     # Includes
2679     foreach my $dest (sort keys %{$unified_info{includes}}) {
2680         if (defined($unified_info{includes}->{$dest}->{build})) {
2681             my @source_includes = ();
2682             @source_includes = ( @{$unified_info{includes}->{$dest}->{source}} )
2683                 if defined($unified_info{includes}->{$dest}->{source});
2684             $unified_info{includes}->{$dest} =
2685                 [ @{$unified_info{includes}->{$dest}->{build}} ];
2686             foreach my $inc (@source_includes) {
2687                 push @{$unified_info{includes}->{$dest}}, $inc
2688                     unless grep { $_ eq $inc } @{$unified_info{includes}->{$dest}};
2689             }
2690         } elsif (defined($unified_info{includes}->{$dest}->{source})) {
2691             $unified_info{includes}->{$dest} =
2692                 [ @{$unified_info{includes}->{$dest}->{source}} ];
2693         } else {
2694             delete $unified_info{includes}->{$dest};
2695         }
2696     }
2697
2698     # For convenience collect information regarding directories where
2699     # files are generated, those generated files and the end product
2700     # they end up in where applicable.  Then, add build rules for those
2701     # directories
2702     my %loopinfo = ( "lib" => [ @{$unified_info{libraries}} ],
2703                      "dso" => [ @{$unified_info{modules}} ],
2704                      "bin" => [ @{$unified_info{programs}} ],
2705                      "script" => [ @{$unified_info{scripts}} ],
2706                      "docs" => [ (map { @{$unified_info{htmldocs}->{$_} // []} }
2707                                   keys %{$unified_info{htmldocs} // {}}),
2708                                  (map { @{$unified_info{mandocs}->{$_} // []} }
2709                                   keys %{$unified_info{mandocs} // {}}) ] );
2710     foreach my $type (keys %loopinfo) {
2711         foreach my $product (@{$loopinfo{$type}}) {
2712             my %dirs = ();
2713             my $pd = dirname($product);
2714
2715             foreach (@{$unified_info{sources}->{$product} // []},
2716                      @{$unified_info{shared_sources}->{$product} // []}) {
2717                 my $d = dirname($_);
2718
2719                 # We don't want to create targets for source directories
2720                 # when building out of source
2721                 next if ($config{sourcedir} ne $config{builddir}
2722                              && $d =~ m|^\Q$config{sourcedir}\E|);
2723                 # We already have a "test" target, and the current directory
2724                 # is just silly to make a target for
2725                 next if $d eq "test" || $d eq ".";
2726
2727                 $dirs{$d} = 1;
2728                 push @{$unified_info{dirinfo}->{$d}->{deps}}, $_
2729                     if $d ne $pd;
2730             }
2731             foreach (keys %dirs) {
2732                 push @{$unified_info{dirinfo}->{$_}->{products}->{$type}},
2733                     $product;
2734             }
2735         }
2736     }
2737 }
2738
2739 # For the schemes that need it, we provide the old *_obj configs
2740 # from the *_asm_obj ones
2741 foreach (grep /_(asm|aux)_src$/, keys %target) {
2742     my $src = $_;
2743     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
2744     $target{$obj} = $target{$src};
2745     $target{$obj} =~ s/\.[csS]\b/.o/g; # C and assembler
2746     $target{$obj} =~ s/\.(cc|cpp)\b/_cc.o/g; # C++
2747 }
2748
2749 # Write down our configuration where it fits #########################
2750
2751 my %template_vars = (
2752     config => \%config,
2753     target => \%target,
2754     disablables => \@disablables,
2755     disablables_int => \@disablables_int,
2756     disabled => \%disabled,
2757     withargs => \%withargs,
2758     unified_info => \%unified_info,
2759     tls => \@tls,
2760     dtls => \@dtls,
2761     makevars => [ sort keys %user ],
2762     disabled_info => \%disabled_info,
2763     user_crossable => \@user_crossable,
2764 );
2765 my $configdata_outname = 'configdata.pm';
2766 print "Creating $configdata_outname\n";
2767 open CONFIGDATA, ">$configdata_outname.new"
2768             or die "Trying to create $configdata_outname.new: $!";
2769 my $configdata_tmplname = cleanfile($srcdir, "configdata.pm.in", $blddir);
2770 my $configdata_tmpl =
2771     OpenSSL::Template->new(TYPE => 'FILE', SOURCE => $configdata_tmplname);
2772 $configdata_tmpl->fill_in(
2773     FILENAME => $configdata_tmplname,
2774     OUTPUT => \*CONFIGDATA,
2775     HASH => { %template_vars,
2776               autowarntext => [
2777                   'WARNING: do not edit!',
2778                   "Generated by Configure from $configdata_tmplname",
2779               ] }
2780 ) or die $Text::Template::ERROR;
2781 close CONFIGDATA;
2782 rename "$configdata_outname.new", $configdata_outname;
2783 if ($builder_platform eq 'unix') {
2784     my $mode = (0755 & ~umask);
2785     chmod $mode, 'configdata.pm'
2786         or warn sprintf("WARNING: Couldn't change mode for 'configdata.pm' to 0%03o: %s\n",$mode,$!);
2787 }
2788
2789 print "Running $configdata_outname\n";
2790 my $perlcmd = (quotify("maybeshell", $config{PERL}))[0];
2791 my $cmd = "$perlcmd $configdata_outname";
2792 #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
2793 system($cmd);
2794 exit 1 if $? != 0;
2795
2796 $SIG{__DIE__} = $orig_death_handler;
2797
2798 print <<"EOF" if ($disabled{threads} eq "unavailable");
2799
2800 The library could not be configured for supporting multi-threaded
2801 applications as the compiler options required on this system are not known.
2802 See file INSTALL.md for details if you need multi-threading.
2803 EOF
2804
2805 print <<"EOF" if ($no_shared_warn);
2806
2807 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
2808 platform, so we will pretend you gave the option 'no-pic', which also disables
2809 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
2810 or position independent code, please let us know (but please first make sure
2811 you have tried with a current version of OpenSSL).
2812 EOF
2813
2814 print <<"EOF";
2815
2816 **********************************************************************
2817 ***                                                                ***
2818 ***   OpenSSL has been successfully configured                     ***
2819 ***                                                                ***
2820 ***   If you encounter a problem while building, please open an    ***
2821 ***   issue on GitHub <https://github.com/openssl/openssl/issues>  ***
2822 ***   and include the output from the following command:           ***
2823 ***                                                                ***
2824 ***       perl configdata.pm --dump                                ***
2825 ***                                                                ***
2826 ***   (If you are new to OpenSSL, you might want to consult the    ***
2827 ***   'Troubleshooting' section in the INSTALL.md file first)      ***
2828 ***                                                                ***
2829 **********************************************************************
2830 EOF
2831
2832 exit(0);
2833
2834 ######################################################################
2835 #
2836 # Helpers and utility functions
2837 #
2838
2839 # Death handler, to print a helpful message in case of failure #######
2840 #
2841 sub death_handler {
2842     die @_ if $^S;              # To prevent the added message in eval blocks
2843     my $build_file = $target{build_file} // "build file";
2844     my @message = ( <<"_____", @_ );
2845
2846 Failure!  $build_file wasn't produced.
2847 Please read INSTALL.md and associated NOTES-* files.  You may also have to
2848 look over your available compiler tool chain or change your configuration.
2849
2850 _____
2851
2852     # Dying is terminal, so it's ok to reset the signal handler here.
2853     $SIG{__DIE__} = $orig_death_handler;
2854     die @message;
2855 }
2856
2857 # Configuration file reading #########################################
2858
2859 # Note: All of the helper functions are for lazy evaluation.  They all
2860 # return a CODE ref, which will return the intended value when evaluated.
2861 # Thus, whenever there's mention of a returned value, it's about that
2862 # intended value.
2863
2864 # Helper function to implement conditional value variants, with a default
2865 # plus additional values based on the value of $config{build_type}.
2866 # Arguments are given in hash table form:
2867 #
2868 #       picker(default => "Basic string: ",
2869 #              debug   => "debug",
2870 #              release => "release")
2871 #
2872 # When configuring with --debug, the resulting string will be
2873 # "Basic string: debug", and when not, it will be "Basic string: release"
2874 #
2875 # This can be used to create variants of sets of flags according to the
2876 # build type:
2877 #
2878 #       cflags => picker(default => "-Wall",
2879 #                        debug   => "-g -O0",
2880 #                        release => "-O3")
2881 #
2882 sub picker {
2883     my %opts = @_;
2884     return sub { add($opts{default} || (),
2885                      $opts{$config{build_type}} || ())->(); }
2886 }
2887
2888 # Helper function to combine several values of different types into one.
2889 # This is useful if you want to combine a string with the result of a
2890 # lazy function, such as:
2891 #
2892 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
2893 #
2894 sub combine {
2895     my @stuff = @_;
2896     return sub { add(@stuff)->(); }
2897 }
2898
2899 # Helper function to implement conditional values depending on the value
2900 # of $disabled{threads}.  Can be used as follows:
2901 #
2902 #       cflags => combine("-Wall", threads("-pthread"))
2903 #
2904 sub threads {
2905     my @flags = @_;
2906     return sub { add($disabled{threads} ? () : @flags)->(); }
2907 }
2908
2909 sub shared {
2910     my @flags = @_;
2911     return sub { add($disabled{shared} ? () : @flags)->(); }
2912 }
2913
2914 our $add_called = 0;
2915 # Helper function to implement adding values to already existing configuration
2916 # values.  It handles elements that are ARRAYs, CODEs and scalars
2917 sub _add {
2918     my $separator = shift;
2919
2920     # If there's any ARRAY in the collection of values OR the separator
2921     # is undef, we will return an ARRAY of combined values, otherwise a
2922     # string of joined values with $separator as the separator.
2923     my $found_array = !defined($separator);
2924
2925     my @values =
2926         map {
2927             my $res = $_;
2928             while (ref($res) eq "CODE") {
2929                 $res = $res->();
2930             }
2931             if (defined($res)) {
2932                 if (ref($res) eq "ARRAY") {
2933                     $found_array = 1;
2934                     @$res;
2935                 } else {
2936                     $res;
2937                 }
2938             } else {
2939                 ();
2940             }
2941     } (@_);
2942
2943     $add_called = 1;
2944
2945     if ($found_array) {
2946         [ @values ];
2947     } else {
2948         join($separator, grep { defined($_) && $_ ne "" } @values);
2949     }
2950 }
2951 sub add_before {
2952     my $separator = " ";
2953     if (ref($_[$#_]) eq "HASH") {
2954         my $opts = pop;
2955         $separator = $opts->{separator};
2956     }
2957     my @x = @_;
2958     sub { _add($separator, @x, @_) };
2959 }
2960 sub add {
2961     my $separator = " ";
2962     if (ref($_[$#_]) eq "HASH") {
2963         my $opts = pop;
2964         $separator = $opts->{separator};
2965     }
2966     my @x = @_;
2967     sub { _add($separator, @_, @x) };
2968 }
2969
2970 sub read_eval_file {
2971     my $fname = shift;
2972     my $content;
2973     my @result;
2974
2975     open F, "< $fname" or die "Can't open '$fname': $!\n";
2976     {
2977         undef local $/;
2978         $content = <F>;
2979     }
2980     close F;
2981     {
2982         local $@;
2983
2984         @result = ( eval $content );
2985         warn $@ if $@;
2986     }
2987     return wantarray ? @result : $result[0];
2988 }
2989
2990 # configuration reader, evaluates the input file as a perl script and expects
2991 # it to fill %targets with target configurations.  Those are then added to
2992 # %table.
2993 sub read_config {
2994     my $fname = shift;
2995     my %targets;
2996
2997     {
2998         # Protect certain tables from tampering
2999         local %table = ();
3000
3001         %targets = read_eval_file($fname);
3002     }
3003     my %preexisting = ();
3004     foreach (sort keys %targets) {
3005         $preexisting{$_} = 1 if $table{$_};
3006     }
3007     die <<"EOF",
3008 The following config targets from $fname
3009 shadow pre-existing config targets with the same name:
3010 EOF
3011         map { "  $_\n" } sort keys %preexisting
3012         if %preexisting;
3013
3014
3015     # For each target, check that it's configured with a hash table.
3016     foreach (keys %targets) {
3017         if (ref($targets{$_}) ne "HASH") {
3018             if (ref($targets{$_}) eq "") {
3019                 warn "Deprecated target configuration for $_, ignoring...\n";
3020             } else {
3021                 warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
3022             }
3023             delete $targets{$_};
3024         } else {
3025             $targets{$_}->{_conf_fname_int} = add([ $fname ]);
3026         }
3027     }
3028
3029     %table = (%table, %targets);
3030
3031 }
3032
3033 # configuration resolver.  Will only resolve all the lazy evaluation
3034 # codeblocks for the chosen target and all those it inherits from,
3035 # recursively
3036 sub resolve_config {
3037     my $target = shift;
3038     my @breadcrumbs = @_;
3039
3040 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
3041
3042     if (grep { $_ eq $target } @breadcrumbs) {
3043         die "inherit_from loop!  target backtrace:\n  "
3044             ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
3045     }
3046
3047     if (!defined($table{$target})) {
3048         warn "Warning! target $target doesn't exist!\n";
3049         return ();
3050     }
3051     # Recurse through all inheritances.  They will be resolved on the
3052     # fly, so when this operation is done, they will all just be a
3053     # bunch of attributes with string values.
3054     # What we get here, though, are keys with references to lists of
3055     # the combined values of them all.  We will deal with lists after
3056     # this stage is done.
3057     my %combined_inheritance = ();
3058     if ($table{$target}->{inherit_from}) {
3059         my @inherit_from =
3060             map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
3061         foreach (@inherit_from) {
3062             my %inherited_config = resolve_config($_, $target, @breadcrumbs);
3063
3064             # 'template' is a marker that's considered private to
3065             # the config that had it.
3066             delete $inherited_config{template};
3067
3068             foreach (keys %inherited_config) {
3069                 if (!$combined_inheritance{$_}) {
3070                     $combined_inheritance{$_} = [];
3071                 }
3072                 push @{$combined_inheritance{$_}}, $inherited_config{$_};
3073             }
3074         }
3075     }
3076
3077     # We won't need inherit_from in this target any more, since we've
3078     # resolved all the inheritances that lead to this
3079     delete $table{$target}->{inherit_from};
3080
3081     # Now is the time to deal with those lists.  Here's the place to
3082     # decide what shall be done with those lists, all based on the
3083     # values of the target we're currently dealing with.
3084     # - If a value is a coderef, it will be executed with the list of
3085     #   inherited values as arguments.
3086     # - If the corresponding key doesn't have a value at all or is the
3087     #   empty string, the inherited value list will be run through the
3088     #   default combiner (below), and the result becomes this target's
3089     #   value.
3090     # - Otherwise, this target's value is assumed to be a string that
3091     #   will simply override the inherited list of values.
3092     my $default_combiner = add();
3093
3094     my %all_keys =
3095         map { $_ => 1 } (keys %combined_inheritance,
3096                          keys %{$table{$target}});
3097
3098     sub process_values {
3099         my $object    = shift;
3100         my $inherited = shift;  # Always a [ list ]
3101         my $target    = shift;
3102         my $entry     = shift;
3103
3104         $add_called = 0;
3105
3106         while(ref($object) eq "CODE") {
3107             $object = $object->(@$inherited);
3108         }
3109         if (!defined($object)) {
3110             return ();
3111         }
3112         elsif (ref($object) eq "ARRAY") {
3113             local $add_called;  # To make sure recursive calls don't affect it
3114             return [ map { process_values($_, $inherited, $target, $entry) }
3115                      @$object ];
3116         } elsif (ref($object) eq "") {
3117             return $object;
3118         } else {
3119             die "cannot handle reference type ",ref($object)
3120                 ," found in target ",$target," -> ",$entry,"\n";
3121         }
3122     }
3123
3124     foreach (sort keys %all_keys) {
3125         my $previous = $combined_inheritance{$_};
3126
3127         # Current target doesn't have a value for the current key?
3128         # Assign it the default combiner, the rest of this loop body
3129         # will handle it just like any other coderef.
3130         if (!exists $table{$target}->{$_}) {
3131             $table{$target}->{$_} = $default_combiner;
3132         }
3133
3134         $table{$target}->{$_} = process_values($table{$target}->{$_},
3135                                                $combined_inheritance{$_},
3136                                                $target, $_);
3137         unless(defined($table{$target}->{$_})) {
3138             delete $table{$target}->{$_};
3139         }
3140 #        if ($extra_checks &&
3141 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
3142 #            warn "$_ got replaced in $target\n";
3143 #        }
3144     }
3145
3146     # Finally done, return the result.
3147     return %{$table{$target}};
3148 }
3149
3150 sub usage
3151         {
3152         print STDERR $usage;
3153         print STDERR "\npick os/compiler from:\n";
3154         my $j=0;
3155         my $i;
3156         my $k=0;
3157         foreach $i (sort keys %table)
3158                 {
3159                 next if $table{$i}->{template};
3160                 next if $i =~ /^debug/;
3161                 $k += length($i) + 1;
3162                 if ($k > 78)
3163                         {
3164                         print STDERR "\n";
3165                         $k=length($i);
3166                         }
3167                 print STDERR $i . " ";
3168                 }
3169         foreach $i (sort keys %table)
3170                 {
3171                 next if $table{$i}->{template};
3172                 next if $i !~ /^debug/;
3173                 $k += length($i) + 1;
3174                 if ($k > 78)
3175                         {
3176                         print STDERR "\n";
3177                         $k=length($i);
3178                         }
3179                 print STDERR $i . " ";
3180                 }
3181         exit(1);
3182         }
3183
3184 sub compiler_predefined {
3185     state %predefined;
3186     my $cc = shift;
3187
3188     return () if $^O eq 'VMS';
3189
3190     die 'compiler_predefined called without a compiler command'
3191         unless $cc;
3192
3193     if (! $predefined{$cc}) {
3194
3195         $predefined{$cc} = {};
3196
3197         # collect compiler pre-defines from gcc or gcc-alike...
3198         open(PIPE, "$cc -dM -E -x c /dev/null 2>&1 |");
3199         while (my $l = <PIPE>) {
3200             $l =~ m/^#define\s+(\w+(?:\(\w+\))?)(?:\s+(.+))?/ or last;
3201             $predefined{$cc}->{$1} = $2 // '';
3202         }
3203         close(PIPE);
3204     }
3205
3206     return %{$predefined{$cc}};
3207 }
3208
3209 sub which
3210 {
3211     my ($name)=@_;
3212
3213     if (eval { require IPC::Cmd; 1; }) {
3214         IPC::Cmd->import();
3215         return scalar IPC::Cmd::can_run($name);
3216     } else {
3217         # if there is $directories component in splitpath,
3218         # then it's not something to test with $PATH...
3219         return $name if (File::Spec->splitpath($name))[1];
3220
3221         foreach (File::Spec->path()) {
3222             my $fullpath = catfile($_, "$name$target{exe_extension}");
3223             if (-f $fullpath and -x $fullpath) {
3224                 return $fullpath;
3225             }
3226         }
3227     }
3228 }
3229
3230 sub env
3231 {
3232     my $name = shift;
3233     my %opts = @_;
3234
3235     unless ($opts{cacheonly}) {
3236         # Note that if $ENV{$name} doesn't exist or is undefined,
3237         # $config{perlenv}->{$name} will be created with the value
3238         # undef.  This is intentional.
3239
3240         $config{perlenv}->{$name} = $ENV{$name}
3241             if ! exists $config{perlenv}->{$name};
3242     }
3243     return $config{perlenv}->{$name};
3244 }
3245
3246 # Configuration printer ##############################################
3247
3248 sub print_table_entry
3249 {
3250     local $now_printing = shift;
3251     my %target = resolve_config($now_printing);
3252     my $type = shift;
3253
3254     # Don't print the templates
3255     return if $target{template};
3256
3257     my @sequence = (
3258         "sys_id",
3259         "cpp",
3260         "cppflags",
3261         "defines",
3262         "includes",
3263         "cc",
3264         "cflags",
3265         "ld",
3266         "lflags",
3267         "loutflag",
3268         "ex_libs",
3269         "bn_ops",
3270         "enable",
3271         "disable",
3272         "poly1035_asm_src",
3273         "thread_scheme",
3274         "perlasm_scheme",
3275         "dso_scheme",
3276         "shared_target",
3277         "shared_cflag",
3278         "shared_defines",
3279         "shared_ldflag",
3280         "shared_rcflag",
3281         "shared_extension",
3282         "dso_extension",
3283         "obj_extension",
3284         "exe_extension",
3285         "ranlib",
3286         "ar",
3287         "arflags",
3288         "aroutflag",
3289         "rc",
3290         "rcflags",
3291         "rcoutflag",
3292         "mt",
3293         "mtflags",
3294         "mtinflag",
3295         "mtoutflag",
3296         "multilib",
3297         "build_scheme",
3298         );
3299
3300     if ($type eq "TABLE") {
3301         print "\n";
3302         print "*** $now_printing\n";
3303         foreach (@sequence) {
3304             if (ref($target{$_}) eq "ARRAY") {
3305                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
3306             } else {
3307                 printf "\$%-12s = %s\n", $_, $target{$_};
3308             }
3309         }
3310     } elsif ($type eq "HASH") {
3311         my $largest =
3312             length((sort { length($a) <=> length($b) } @sequence)[-1]);
3313         print "    '$now_printing' => {\n";
3314         foreach (@sequence) {
3315             if ($target{$_}) {
3316                 if (ref($target{$_}) eq "ARRAY") {
3317                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
3318                 } else {
3319                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
3320                 }
3321             }
3322         }
3323         print "    },\n";
3324     }
3325 }
3326
3327 # Utility routines ###################################################
3328
3329 # On VMS, if the given file is a logical name, File::Spec::Functions
3330 # will consider it an absolute path.  There are cases when we want a
3331 # purely syntactic check without checking the environment.
3332 sub isabsolute {
3333     my $file = shift;
3334
3335     # On non-platforms, we just use file_name_is_absolute().
3336     return file_name_is_absolute($file) unless $^O eq "VMS";
3337
3338     # If the file spec includes a device or a directory spec,
3339     # file_name_is_absolute() is perfectly safe.
3340     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
3341
3342     # Here, we know the given file spec isn't absolute
3343     return 0;
3344 }
3345
3346 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
3347 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
3348 # realpath() requires that at least all path components except the last is an
3349 # existing directory.  On VMS, the last component of the directory spec must
3350 # exist.
3351 sub absolutedir {
3352     my $dir = shift;
3353
3354     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
3355     # will return the volume name for the device, no matter what.  Also,
3356     # it will return an incorrect directory spec if the argument is a
3357     # directory that doesn't exist.
3358     if ($^O eq "VMS") {
3359         return rel2abs($dir);
3360     }
3361
3362     # We use realpath() on Unix, since no other will properly clean out
3363     # a directory spec.
3364     use Cwd qw/realpath/;
3365
3366     return realpath($dir);
3367 }
3368
3369 # Check if all paths are one and the same, using stat.  They must both exist
3370 # We need this for the cases when File::Spec doesn't detect case insensitivity
3371 # (File::Spec::Unix assumes case sensitivity)
3372 sub samedir {
3373     die "samedir expects two arguments\n" unless scalar @_ == 2;
3374
3375     my @stat0 = stat($_[0]);    # First argument
3376     my @stat1 = stat($_[1]);    # Second argument
3377
3378     die "Couldn't stat $_[0]" unless @stat0;
3379     die "Couldn't stat $_[1]" unless @stat1;
3380
3381     # Compare device number
3382     return 0 unless ($stat0[0] == $stat1[0]);
3383     # Compare "inode".  The perl manual recommends comparing as
3384     # string rather than as number.
3385     return 0 unless ($stat0[1] eq $stat1[1]);
3386
3387     return 1;                   # All the same
3388 }
3389
3390 sub quotify {
3391     my %processors = (
3392         perl    => sub { my $x = shift;
3393                          $x =~ s/([\\\$\@"])/\\$1/g;
3394                          return '"'.$x.'"'; },
3395         maybeshell => sub { my $x = shift;
3396                             (my $y = $x) =~ s/([\\\"])/\\$1/g;
3397                             if ($x ne $y || $x =~ m|\s|) {
3398                                 return '"'.$y.'"';
3399                             } else {
3400                                 return $x;
3401                             }
3402                         },
3403         );
3404     my $for = shift;
3405     my $processor =
3406         defined($processors{$for}) ? $processors{$for} : sub { shift; };
3407
3408     return map { $processor->($_); } @_;
3409 }
3410
3411 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
3412 # $filename is a file name to read from
3413 # $line_concat_cond_re is a regexp detecting a line continuation ending
3414 # $line_concat is a CODEref that takes care of concatenating two lines
3415 sub collect_from_file {
3416     my $filename = shift;
3417     my $line_concat_cond_re = shift;
3418     my $line_concat = shift;
3419
3420     open my $fh, $filename || die "unable to read $filename: $!\n";
3421     return sub {
3422         my $saved_line = "";
3423         $_ = "";
3424         while (<$fh>) {
3425             s|\R$||;
3426             if (defined $line_concat) {
3427                 $_ = $line_concat->($saved_line, $_);
3428                 $saved_line = "";
3429             }
3430             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3431                 $saved_line = $_;
3432                 next;
3433             }
3434             return $_;
3435         }
3436         die "$filename ending with continuation line\n" if $_;
3437         close $fh;
3438         return undef;
3439     }
3440 }
3441
3442 # collect_from_array($array, $line_concat_cond_re, $line_concat)
3443 # $array is an ARRAYref of lines
3444 # $line_concat_cond_re is a regexp detecting a line continuation ending
3445 # $line_concat is a CODEref that takes care of concatenating two lines
3446 sub collect_from_array {
3447     my $array = shift;
3448     my $line_concat_cond_re = shift;
3449     my $line_concat = shift;
3450     my @array = (@$array);
3451
3452     return sub {
3453         my $saved_line = "";
3454         $_ = "";
3455         while (defined($_ = shift @array)) {
3456             s|\R$||;
3457             if (defined $line_concat) {
3458                 $_ = $line_concat->($saved_line, $_);
3459                 $saved_line = "";
3460             }
3461             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3462                 $saved_line = $_;
3463                 next;
3464             }
3465             return $_;
3466         }
3467         die "input text ending with continuation line\n" if $_;
3468         return undef;
3469     }
3470 }
3471
3472 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
3473 # $lineiterator is a CODEref that delivers one line at a time.
3474 # All following arguments are regex/CODEref pairs, where the regexp detects a
3475 # line and the CODEref does something with the result of the regexp.
3476 sub collect_information {
3477     my $lineiterator = shift;
3478     my %collectors = @_;
3479
3480     while(defined($_ = $lineiterator->())) {
3481         s|\R$||;
3482         my $found = 0;
3483         if ($collectors{"BEFORE"}) {
3484             $collectors{"BEFORE"}->($_);
3485         }
3486         foreach my $re (keys %collectors) {
3487             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
3488                 $collectors{$re}->($lineiterator);
3489                 $found = 1;
3490             };
3491         }
3492         if ($collectors{"OTHERWISE"}) {
3493             $collectors{"OTHERWISE"}->($lineiterator, $_)
3494                 unless $found || !defined $collectors{"OTHERWISE"};
3495         }
3496         if ($collectors{"AFTER"}) {
3497             $collectors{"AFTER"}->($_);
3498         }
3499     }
3500 }
3501
3502 # tokenize($line)
3503 # tokenize($line,$separator)
3504 # $line is a line of text to split up into tokens
3505 # $separator [optional] is a regular expression that separates the tokens,
3506 # the default being spaces.  Do not use quotes of any kind as separators,
3507 # that will give undefined results.
3508 # Returns a list of tokens.
3509 #
3510 # Tokens are divided by separator (spaces by default).  If the tokens include
3511 # the separators, they have to be quoted with single or double quotes.
3512 # Double quotes inside a double quoted token must be escaped.  Escaping is done
3513 # with backslash.
3514 # Basically, the same quoting rules apply for " and ' as in any
3515 # Unix shell.
3516 sub tokenize {
3517     my $line = my $debug_line = shift;
3518     my $separator = shift // qr|\s+|;
3519     my @result = ();
3520
3521     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
3522         print STDERR "DEBUG[tokenize]: \$separator = $separator\n";
3523     }
3524
3525     while ($line =~ s|^${separator}||, $line ne "") {
3526         my $token = "";
3527     again:
3528         $line =~ m/^(.*?)(${separator}|"|'|$)/;
3529         $token .= $1;
3530         $line = $2.$';
3531
3532         if ($line =~ m/^"((?:[^"\\]+|\\.)*)"/) {
3533             $token .= $1;
3534             $line = $';
3535             goto again;
3536         } elsif ($line =~ m/^'([^']*)'/) {
3537             $token .= $1;
3538             $line = $';
3539             goto again;
3540         }
3541         push @result, $token;
3542     }
3543
3544     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
3545         print STDERR "DEBUG[tokenize]: Parsed '$debug_line' into:\n";
3546         print STDERR "DEBUG[tokenize]: ('", join("', '", @result), "')\n";
3547     }
3548     return @result;
3549 }