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 my $banner = <<"EOF";
  33
  34 **********************************************************************
  35 ***                                                                ***
  36 ***   OpenSSL has been successfully configured                     ***
  37 ***                                                                ***
  38 ***   If you encounter a problem while building, please open an    ***
  39 ***   issue on GitHub <https://github.com/openssl/openssl/issues>  ***
  40 ***   and include the output from the following command:           ***
  41 ***                                                                ***
  42 ***       perl configdata.pm --dump                                ***
  43 ***                                                                ***
  44 ***   (If you are new to OpenSSL, you might want to consult the    ***
  45 ***   'Troubleshooting' section in the INSTALL.md file first)      ***
  46 ***                                                                ***
  47 **********************************************************************
  48 EOF
  49
  50 # Options:
  51 #
  52 # --config      add the given configuration file, which will be read after
  53 #               any "Configurations*" files that are found in the same
  54 #               directory as this script.
  55 # --prefix      prefix for the OpenSSL installation, which includes the
  56 #               directories bin, lib, include, share/man, share/doc/openssl
  57 #               This becomes the value of INSTALLTOP in Makefile
  58 #               (Default: /usr/local)
  59 # --openssldir  OpenSSL data area, such as openssl.cnf, certificates and keys.
  60 #               If it's a relative directory, it will be added on the directory
  61 #               given with --prefix.
  62 #               This becomes the value of OPENSSLDIR in Makefile and in C.
  63 #               (Default: PREFIX/ssl)
  64 # --banner=".." Output specified text instead of default completion banner
  65 #
  66 # --cross-compile-prefix Add specified prefix to binutils components.
  67 #
  68 # --api         One of 0.9.8, 1.0.0, 1.0.1, 1.0.2, 1.1.0, 1.1.1, or 3.0
  69 #               Define the public APIs as they were for that version
  70 #               including patch releases.  If 'no-deprecated' is also
  71 #               given, do not compile support for interfaces deprecated
  72 #               up to and including the specified OpenSSL version.
  73 #
  74 # no-hw-xxx     do not compile support for specific crypto hardware.
  75 #               Generic OpenSSL-style methods relating to this support
  76 #               are always compiled but return NULL if the hardware
  77 #               support isn't compiled.
  78 # no-hw         do not compile support for any crypto hardware.
  79 # [no-]threads  [don't] try to create a library that is suitable for
  80 #               multithreaded applications (default is "threads" if we
  81 #               know how to do it)
  82 # [no-]shared   [don't] try to create shared libraries when supported.
  83 # [no-]pic      [don't] try to build position independent code when supported.
  84 #               If disabled, it also disables shared and dynamic-engine.
  85 # no-asm        do not use assembler
  86 # no-egd        do not compile support for the entropy-gathering daemon APIs
  87 # [no-]zlib     [don't] compile support for zlib compression.
  88 # zlib-dynamic  Like "zlib", but the zlib library is expected to be a shared
  89 #               library and will be loaded in run-time by the OpenSSL library.
  90 # sctp          include SCTP support
  91 # no-uplink     Don't build support for UPLINK interface.
  92 # enable-weak-ssl-ciphers
  93 #               Enable weak ciphers that are disabled by default.
  94 # 386           generate 80386 code in assembly modules
  95 # no-sse2       disables IA-32 SSE2 code in assembly modules, the above
  96 #               mentioned '386' option implies this one
  97 # no-<cipher>   build without specified algorithm (dsa, idea, rc5, ...)
  98 # -<xxx> +<xxx> All options which are unknown to the 'Configure' script are
  99 # /<xxx>        passed through to the compiler. Unix-style options beginning
 100 #               with a '-' or '+' are recognized, as well as Windows-style
 101 #               options beginning with a '/'. If the option contains arguments
 102 #               separated by spaces, then the URL-style notation %20 can be
 103 #               used for the space character in order to avoid having to quote
 104 #               the option. For example, -opt%20arg gets expanded to -opt arg.
 105 #               In fact, any ASCII character can be encoded as %xx using its
 106 #               hexadecimal encoding.
 107 # -static       while -static is also a pass-through compiler option (and
 108 #               as such is limited to environments where it's actually
 109 #               meaningful), it triggers a number configuration options,
 110 #               namely no-pic, no-shared and no-threads. It is
 111 #               argued that the only reason to produce statically linked
 112 #               binaries (and in context it means executables linked with
 113 #               -static flag, and not just executables linked with static
 114 #               libcrypto.a) is to eliminate dependency on specific run-time,
 115 #               a.k.a. libc version. The mentioned config options are meant
 116 #               to achieve just that. Unfortunately on Linux it's impossible
 117 #               to eliminate the dependency completely for openssl executable
 118 #               because of getaddrinfo and gethostbyname calls, which can
 119 #               invoke dynamically loadable library facility anyway to meet
 120 #               the lookup requests. For this reason on Linux statically
 121 #               linked openssl executable has rather debugging value than
 122 #               production quality.
 123 #
 124 # BN_LLONG      use the type 'long long' in crypto/bn/bn.h
 125 # RC4_CHAR      use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
 126 # Following are set automatically by this script
 127 #
 128 # MD5_ASM       use some extra md5 assembler,
 129 # SHA1_ASM      use some extra sha1 assembler, must define L_ENDIAN for x86
 130 # RMD160_ASM    use some extra ripemd160 assembler,
 131 # SHA256_ASM    sha256_block is implemented in assembler
 132 # SHA512_ASM    sha512_block is implemented in assembler
 133 # AES_ASM       AES_[en|de]crypt is implemented in assembler
 134
 135 # Minimum warning options... any contributions to OpenSSL should at least
 136 # get past these.  Note that we only use these with C compilers, not with
 137 # C++ compilers.
 138
 139 # -DPEDANTIC complements -pedantic and is meant to mask code that
 140 # is not strictly standard-compliant and/or implementation-specific,
 141 # e.g. inline assembly, disregards to alignment requirements, such
 142 # that -pedantic would complain about. Incidentally -DPEDANTIC has
 143 # to be used even in sanitized builds, because sanitizer too is
 144 # supposed to and does take notice of non-standard behaviour. Then
 145 # -pedantic with pre-C9x compiler would also complain about 'long
 146 # long' not being supported. As 64-bit algorithms are common now,
 147 # it grew impossible to resolve this without sizeable additional
 148 # code, so we just tell compiler to be pedantic about everything
 149 # but 'long long' type.
 150
 151 my @gcc_devteam_warn = qw(
 152     -DPEDANTIC -pedantic -Wno-long-long -DUNUSEDRESULT_DEBUG
 153     -Wall
 154     -Wmissing-declarations
 155     -Wextra
 156     -Wno-unused-parameter
 157     -Wno-missing-field-initializers
 158     -Wswitch
 159     -Wsign-compare
 160     -Wshadow
 161     -Wformat
 162     -Wtype-limits
 163     -Wundef
 164     -Werror
 165     -Wmissing-prototypes
 166     -Wstrict-prototypes
 167 );
 168
 169 # These are used in addition to $gcc_devteam_warn when the compiler is clang.
 170 # TODO(openssl-team): fix problems and investigate if (at least) the
 171 # following warnings can also be enabled:
 172 #       -Wcast-align
 173 #       -Wunreachable-code -- no, too ugly/compiler-specific
 174 #       -Wlanguage-extension-token -- no, we use asm()
 175 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
 176 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
 177 my @clang_devteam_warn = qw(
 178     -Wno-unknown-warning-option
 179     -Wswitch-default
 180     -Wno-parentheses-equality
 181     -Wno-language-extension-token
 182     -Wno-extended-offsetof
 183     -Wconditional-uninitialized
 184     -Wincompatible-pointer-types-discards-qualifiers
 185     -Wmissing-variable-declarations
 186 );
 187
 188 my @cl_devteam_warn = qw(
 189     /WX
 190 );
 191
 192 my $strict_warnings = 0;
 193
 194 # As for $BSDthreads. Idea is to maintain "collective" set of flags,
 195 # which would cover all BSD flavors. -pthread applies to them all,
 196 # but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
 197 # -lc_r, which is sufficient. FreeBSD 4.x expands it as -lc_r,
 198 # which has to be accompanied by explicit -D_THREAD_SAFE and
 199 # sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
 200 # seems to be sufficient?
 201 our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
 202
 203 #
 204 # API compatibility name to version number mapping.
 205 #
 206 my $apitable = {
 207     # This table expresses when API additions or changes can occur.
 208     # The numbering used changes from 3.0 and on because we updated
 209     # (solidified) our version numbering scheme at that point.
 210
 211     # From 3.0 and on, we internalise the given version number in decimal
 212     # as MAJOR * 10000 + MINOR * 100 + 0
 213     "3.0.0" => 30000,
 214     "3.0"   => 30000,
 215
 216     # Note that before 3.0, we didn't have the same version number scheme.
 217     # Still, the numbering we use here covers what we need.
 218     "1.1.1" => 10101,
 219     "1.1.0" => 10100,
 220     "1.0.2" => 10002,
 221     "1.0.1" => 10001,
 222     "1.0.0" => 10000,
 223     "0.9.8" =>   908,
 224 };
 225
 226 # For OpenSSL::config::get_platform
 227 my %guess_opts = ();
 228
 229 my $dryrun = 0;
 230
 231 our %table = ();
 232 our %config = ();
 233 our %withargs = ();
 234 our $now_printing;      # set to current entry's name in print_table_entry
 235                         # (todo: right thing would be to encapsulate name
 236                         # into %target [class] and make print_table_entry
 237                         # a method)
 238
 239 # Forward declarations ###############################################
 240
 241 # read_config(filename)
 242 #
 243 # Reads a configuration file and populates %table with the contents
 244 # (which the configuration file places in %targets).
 245 sub read_config;
 246
 247 # resolve_config(target)
 248 #
 249 # Resolves all the late evaluations, inheritances and so on for the
 250 # chosen target and any target it inherits from.
 251 sub resolve_config;
 252
 253
 254 # Information collection #############################################
 255
 256 # Unified build supports separate build dir
 257 my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
 258 my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
 259
 260 # File::Spec::Unix doesn't detect case insensitivity, so we make sure to
 261 # check if the source and build directory are really the same, and make
 262 # them so.  This avoids all kinds of confusion later on.
 263 # We must check @File::Spec::ISA rather than using File::Spec->isa() to
 264 # know if File::Spec ended up loading File::Spec::Unix.
 265 $srcdir = $blddir
 266     if (grep(/::Unix$/, @File::Spec::ISA)
 267         && samedir($srcdir, $blddir));
 268
 269 my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));
 270
 271 my $local_config_envname = 'OPENSSL_LOCAL_CONFIG_DIR';
 272
 273 $config{sourcedir} = abs2rel($srcdir, $blddir);
 274 $config{builddir} = abs2rel($blddir, $blddir);
 275 # echo -n 'holy hand grenade of antioch' | openssl sha256
 276 $config{FIPSKEY} =
 277     'f4556650ac31d35461610bac4ed81b1a181b2d8a43ea2854cbae22ca74560813';
 278
 279 # Collect reconfiguration information if needed
 280 my @argvcopy=@ARGV;
 281
 282 if (grep /^reconf(igure)?$/, @argvcopy) {
 283     die "reconfiguring with other arguments present isn't supported"
 284         if scalar @argvcopy > 1;
 285     if (-f "./configdata.pm") {
 286         my $file = "./configdata.pm";
 287         unless (my $return = do $file) {
 288             die "couldn't parse $file: $@" if $@;
 289             die "couldn't do $file: $!"    unless defined $return;
 290             die "couldn't run $file"       unless $return;
 291         }
 292
 293         @argvcopy = defined($configdata::config{perlargv}) ?
 294             @{$configdata::config{perlargv}} : ();
 295         die "Incorrect data to reconfigure, please do a normal configuration\n"
 296             if (grep(/^reconf/,@argvcopy));
 297         $config{perlenv} = $configdata::config{perlenv} // {};
 298     } else {
 299         die "Insufficient data to reconfigure, please do a normal configuration\n";
 300     }
 301 }
 302
 303 $config{perlargv} = [ @argvcopy ];
 304
 305 # Historical: if known directories in crypto/ have been removed, it means
 306 # that those sub-systems are disabled.
 307 # (the other option would be to removed them from the SUBDIRS statement in
 308 # crypto/build.info)
 309 # We reverse the input list for cosmetic purely reasons, to compensate that
 310 # 'unshift' adds at the front of the list (i.e. in reverse input order).
 311 foreach ( reverse sort( 'aes', 'aria', 'bf', 'camellia', 'cast', 'des', 'dh',
 312                         'dsa', 'ec', 'hmac', 'idea', 'md2', 'md5', 'mdc2',
 313                         'rc2', 'rc4', 'rc5', 'ripemd', 'seed', 'sha',
 314                         'sm2', 'sm3', 'sm4') ) {
 315     unshift @argvcopy, "no-$_" if ! -d catdir($srcdir, 'crypto', $_);
 316 }
 317
 318 # Collect version numbers
 319 my %version = ();
 320
 321 collect_information(
 322     collect_from_file(catfile($srcdir,'VERSION.dat')),
 323     qr/\s*(\w+)\s*=\s*(.*?)\s*$/ =>
 324         sub {
 325             # Only define it if there is a value at all
 326             if ($2 ne '') {
 327                 my $k = $1;
 328                 my $v = $2;
 329                 # Some values are quoted.  Trim the quotes
 330                 $v = $1 if $v =~ /^"(.*)"$/;
 331                 $version{uc $k} = $v;
 332             }
 333         },
 334     "OTHERWISE" =>
 335         sub { die "Something wrong with this line:\n$_\nin $srcdir/VERSION.dat" },
 336     );
 337
 338 $config{major} = $version{MAJOR} // 'unknown';
 339 $config{minor} = $version{MINOR} // 'unknown';
 340 $config{patch} = $version{PATCH} // 'unknown';
 341 $config{prerelease} =
 342     defined $version{PRE_RELEASE_TAG} ? "-$version{PRE_RELEASE_TAG}" : '';
 343 $config{build_metadata} =
 344     defined $version{BUILD_METADATA} ? "+$version{BUILD_METADATA}" : '';
 345 $config{shlib_version} = $version{SHLIB_VERSION} // 'unknown';
 346 $config{release_date} = $version{RELEASE_DATE} // 'xx XXX xxxx';
 347
 348 $config{version} = "$config{major}.$config{minor}.$config{patch}";
 349 $config{full_version} = "$config{version}$config{prerelease}$config{build_metadata}";
 350
 351 die "erroneous version information in VERSION.dat: ",
 352     "$config{version}, $config{shlib_version}\n"
 353     unless (defined $version{MAJOR}
 354             && defined $version{MINOR}
 355             && defined $version{PATCH}
 356             && defined $version{SHLIB_VERSION});
 357
 358 # Collect target configurations
 359
 360 my $pattern = catfile(dirname($0), "Configurations", "*.conf");
 361 foreach (sort glob($pattern)) {
 362     &read_config($_);
 363 }
 364
 365 if (defined env($local_config_envname)) {
 366     if ($^O eq 'VMS') {
 367         # VMS environment variables are logical names,
 368         # which can be used as is
 369         $pattern = $local_config_envname . ':' . '*.conf';
 370     } else {
 371         $pattern = catfile(env($local_config_envname), '*.conf');
 372     }
 373
 374     foreach (sort glob($pattern)) {
 375         &read_config($_);
 376     }
 377 }
 378
 379 # Save away perl command information
 380 $config{perl_cmd} = $^X;
 381 $config{perl_version} = $Config{version};
 382 $config{perl_archname} = $Config{archname};
 383
 384 $config{prefix}="";
 385 $config{openssldir}="";
 386 $config{processor}="";
 387 $config{libdir}="";
 388 my $auto_threads=1;    # enable threads automatically? true by default
 389 my $default_ranlib;
 390
 391 # Known TLS and DTLS protocols
 392 my @tls = qw(ssl3 tls1 tls1_1 tls1_2 tls1_3);
 393 my @dtls = qw(dtls1 dtls1_2);
 394
 395 # Explicitly known options that are possible to disable.  They can
 396 # be regexps, and will be used like this: /^no-${option}$/
 397 # For developers: keep it sorted alphabetically
 398
 399 my @disablables = (
 400     "acvp-tests",
 401     "afalgeng",
 402     "aria",
 403     "asan",
 404     "asm",
 405     "async",
 406     "autoalginit",
 407     "autoerrinit",
 408     "autoload-config",
 409     "bf",
 410     "blake2",
 411     "buildtest-c++",
 412     "bulk",
 413     "cached-fetch",
 414     "camellia",
 415     "capieng",
 416     "cast",
 417     "chacha",
 418     "cmac",
 419     "cmp",
 420     "cms",
 421     "comp",
 422     "crypto-mdebug",
 423     "ct",
 424     "deprecated",
 425     "des",
 426     "devcryptoeng",
 427     "dgram",
 428     "dh",
 429     "dsa",
 430     "dso",
 431     "dtls",
 432     "dynamic-engine",
 433     "ec",
 434     "ec2m",
 435     "ec_nistp_64_gcc_128",
 436     "ecdh",
 437     "ecdsa",
 438     "egd",
 439     "engine",
 440     "err",
 441     "external-tests",
 442     "filenames",
 443     "fips",
 444     "fips-securitychecks",
 445     "fuzz-afl",
 446     "fuzz-libfuzzer",
 447     "gost",
 448     "idea",
 449     "ktls",
 450     "legacy",
 451     "loadereng",
 452     "makedepend",
 453     "md2",
 454     "md4",
 455     "mdc2",
 456     "module",
 457     "msan",
 458     "multiblock",
 459     "nextprotoneg",
 460     "ocb",
 461     "ocsp",
 462     "padlockeng",
 463     "pic",
 464     "pinshared",
 465     "poly1305",
 466     "posix-io",
 467     "psk",
 468     "rc2",
 469     "rc4",
 470     "rc5",
 471     "rdrand",
 472     "rfc3779",
 473     "rmd160",
 474     "scrypt",
 475     "sctp",
 476     "secure-memory",
 477     "seed",
 478     "shared",
 479     "siphash",
 480     "siv",
 481     "sm2",
 482     "sm3",
 483     "sm4",
 484     "sock",
 485     "srp",
 486     "srtp",
 487     "sse2",
 488     "ssl",
 489     "ssl-trace",
 490     "static-engine",
 491     "stdio",
 492     "tests",
 493     "threads",
 494     "tls",
 495     "trace",
 496     "ts",
 497     "ubsan",
 498     "ui-console",
 499     "unit-test",
 500     "uplink",
 501     "weak-ssl-ciphers",
 502     "whirlpool",
 503     "zlib",
 504     "zlib-dynamic",
 505     );
 506 foreach my $proto ((@tls, @dtls))
 507         {
 508         push(@disablables, $proto);
 509         push(@disablables, "$proto-method") unless $proto eq "tls1_3";
 510         }
 511
 512 # Internal disablables, for aliasing purposes.  They serve no special
 513 # purpose here, but allow scripts to get to know them through configdata.pm,
 514 # where these are merged with @disablables.
 515 # The actual aliasing mechanism is done via %disable_cascades
 516 my @disablables_int = qw(
 517     crmf
 518     );
 519
 520 my %deprecated_disablables = (
 521     "ssl2" => undef,
 522     "buf-freelists" => undef,
 523     "crypto-mdebug-backtrace" => undef,
 524     "hw" => "hw",               # causes cascade, but no macro
 525     "hw-padlock" => "padlockeng",
 526     "ripemd" => "rmd160",
 527     "ui" => "ui-console",
 528     "heartbeats" => undef,
 529     );
 530
 531 # All of the following are disabled by default:
 532
 533 our %disabled = ( # "what"         => "comment"
 534                   "fips"                => "default",
 535                   "acvp-tests"          => "default",
 536                   "asan"                => "default",
 537                   "buildtest-c++"       => "default",
 538                   "crypto-mdebug"       => "default",
 539                   "crypto-mdebug-backtrace" => "default",
 540                   "devcryptoeng"        => "default",
 541                   "ec_nistp_64_gcc_128" => "default",
 542                   "egd"                 => "default",
 543                   "external-tests"      => "default",
 544                   "fuzz-afl"            => "default",
 545                   "fuzz-libfuzzer"      => "default",
 546                   "ktls"                => "default",
 547                   "md2"                 => "default",
 548                   "msan"                => "default",
 549                   "rc5"                 => "default",
 550                   "sctp"                => "default",
 551                   "ssl3"                => "default",
 552                   "ssl3-method"         => "default",
 553                   "trace"               => "default",
 554                   "ubsan"               => "default",
 555                   "unit-test"           => "default",
 556                   "weak-ssl-ciphers"    => "default",
 557                   "zlib"                => "default",
 558                   "zlib-dynamic"        => "default",
 559                 );
 560
 561 # Note: => pair form used for aesthetics, not to truly make a hash table
 562 my @disable_cascades = (
 563     # "what"            => [ "cascade", ... ]
 564     "bulk"              => [ "shared", "dso",
 565                              "aria", "async", "autoload-config",
 566                              "blake2", "bf", "camellia", "cast", "chacha",
 567                              "cmac", "cms", "cmp", "comp", "ct",
 568                              "des", "dgram", "dh", "dsa",
 569                              "ec", "engine",
 570                              "filenames",
 571                              "idea", "ktls",
 572                              "md4", "multiblock", "nextprotoneg",
 573                              "ocsp", "ocb", "poly1305", "psk",
 574                              "rc2", "rc4", "rmd160",
 575                              "seed", "siphash", "siv",
 576                              "sm3", "sm4", "srp",
 577                              "srtp", "ssl3-method", "ssl-trace",
 578                              "ts", "ui-console", "whirlpool",
 579                              "fips-securitychecks" ],
 580     sub { $config{processor} eq "386" }
 581                         => [ "sse2" ],
 582     "ssl"               => [ "ssl3" ],
 583     "ssl3-method"       => [ "ssl3" ],
 584     "zlib"              => [ "zlib-dynamic" ],
 585     "des"               => [ "mdc2" ],
 586     "ec"                => [ "ec2m", "ecdsa", "ecdh", "sm2", "gost" ],
 587     "dgram"             => [ "dtls", "sctp" ],
 588     "sock"              => [ "dgram" ],
 589     "dtls"              => [ @dtls ],
 590     sub { 0 == scalar grep { !$disabled{$_} } @dtls }
 591                         => [ "dtls" ],
 592
 593     "tls"               => [ @tls ],
 594     sub { 0 == scalar grep { !$disabled{$_} } @tls }
 595                         => [ "tls" ],
 596
 597     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
 598
 599     # If no modules, then no dynamic engines either
 600     "module"            => [ "dynamic-engine" ],
 601
 602     # Without shared libraries, dynamic engines aren't possible.
 603     # This is due to them having to link with libcrypto and register features
 604     # using the ENGINE functionality, and since that relies on global tables,
 605     # those *have* to be exacty the same as the ones accessed from the app,
 606     # which cannot be guaranteed if shared libraries aren't present.
 607     # (note that even with shared libraries, both the app and dynamic engines
 608     # must be linked with the same library)
 609     "shared"            => [ "dynamic-engine", "uplink" ],
 610     "dso"               => [ "dynamic-engine", "module" ],
 611     # Other modules don't necessarily have to link with libcrypto, so shared
 612     # libraries do not have to be a condition to produce those.
 613
 614     # Without position independent code, there can be no shared libraries
 615     # or modules.
 616     "pic"               => [ "shared", "module" ],
 617
 618     "module"            => [ "fips", "dso" ],
 619
 620     "engine"            => [ "dynamic-engine", grep(/eng$/, @disablables) ],
 621     "hw"                => [ "padlockeng" ],
 622
 623     # no-autoalginit is only useful when building non-shared
 624     "autoalginit"       => [ "shared", "apps", "fips" ],
 625
 626     "stdio"             => [ "apps", "capieng", "egd" ],
 627     "apps"              => [ "tests" ],
 628     "tests"             => [ "external-tests" ],
 629     "comp"              => [ "zlib" ],
 630     "sm3"               => [ "sm2" ],
 631     sub { !$disabled{"unit-test"} } => [ "heartbeats" ],
 632
 633     sub { !$disabled{"msan"} } => [ "asm" ],
 634
 635     "cmac"              => [ "siv" ],
 636     "legacy"            => [ "md2" ],
 637
 638     "cmp"               => [ "crmf" ],
 639
 640     "fips"              => [ "fips-securitychecks" ],
 641
 642     "deprecated-3.0"    => [ "engine", "srp" ]
 643     );
 644
 645 # Avoid protocol support holes.  Also disable all versions below N, if version
 646 # N is disabled while N+1 is enabled.
 647 #
 648 my @list = (reverse @tls);
 649 while ((my $first, my $second) = (shift @list, shift @list)) {
 650     last unless @list;
 651     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 652                               => [ @list ] );
 653     unshift @list, $second;
 654 }
 655 my @list = (reverse @dtls);
 656 while ((my $first, my $second) = (shift @list, shift @list)) {
 657     last unless @list;
 658     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 659                               => [ @list ] );
 660     unshift @list, $second;
 661 }
 662
 663 # Explicit "no-..." options will be collected in %disabled along with the defaults.
 664 # To remove something from %disabled, use "enable-foo".
 665 # For symmetry, "disable-foo" is a synonym for "no-foo".
 666
 667 # For the "make variables" CPPINCLUDES and CPPDEFINES, we support lists with
 668 # platform specific list separators.  Users from those platforms should
 669 # recognise those separators from how you set up the PATH to find executables.
 670 # The default is the Unix like separator, :, but as an exception, we also
 671 # support the space as separator.
 672 my $list_separator_re =
 673     { VMS           => qr/(?<!\^),/,
 674       MSWin32       => qr/(?<!\\);/ } -> {$^O} // qr/(?<!\\)[:\s]/;
 675 # All the "make variables" we support
 676 # Some get pre-populated for the sake of backward compatibility
 677 # (we supported those before the change to "make variable" support.
 678 my %user = (
 679     AR          => env('AR'),
 680     ARFLAGS     => [],
 681     AS          => undef,
 682     ASFLAGS     => [],
 683     CC          => env('CC'),
 684     CFLAGS      => [ env('CFLAGS') || () ],
 685     CXX         => env('CXX'),
 686     CXXFLAGS    => [ env('CXXFLAGS') || () ],
 687     CPP         => undef,
 688     CPPFLAGS    => [ env('CPPFLAGS') || () ],  # -D, -I, -Wp,
 689     CPPDEFINES  => [],  # Alternative for -D
 690     CPPINCLUDES => [],  # Alternative for -I
 691     CROSS_COMPILE => env('CROSS_COMPILE'),
 692     HASHBANGPERL=> env('HASHBANGPERL') || env('PERL'),
 693     LD          => undef,
 694     LDFLAGS     => [ env('LDFLAGS') || () ],  # -L, -Wl,
 695     LDLIBS      => [ env('LDLIBS') || () ],  # -l
 696     MT          => undef,
 697     MTFLAGS     => [],
 698     PERL        => env('PERL') || ($^O ne "VMS" ? $^X : "perl"),
 699     RANLIB      => env('RANLIB'),
 700     RC          => env('RC') || env('WINDRES'),
 701     RCFLAGS     => [ env('RCFLAGS') || () ],
 702     RM          => undef,
 703    );
 704 # Info about what "make variables" may be prefixed with the cross compiler
 705 # prefix.  This should NEVER mention any such variable with a list for value.
 706 my @user_crossable = qw ( AR AS CC CXX CPP LD MT RANLIB RC );
 707 # The same but for flags given as Configure options.  These are *additional*
 708 # input, as opposed to the VAR=string option that override the corresponding
 709 # config target attributes
 710 my %useradd = (
 711     CPPDEFINES  => [],
 712     CPPINCLUDES => [],
 713     CPPFLAGS    => [],
 714     CFLAGS      => [],
 715     CXXFLAGS    => [],
 716     LDFLAGS     => [],
 717     LDLIBS      => [],
 718     RCFLAGS     => [],
 719    );
 720
 721 my %user_synonyms = (
 722     HASHBANGPERL=> 'PERL',
 723     RC          => 'WINDRES',
 724    );
 725
 726 # Some target attributes have been renamed, this is the translation table
 727 my %target_attr_translate =(
 728     ar          => 'AR',
 729     as          => 'AS',
 730     cc          => 'CC',
 731     cxx         => 'CXX',
 732     cpp         => 'CPP',
 733     hashbangperl => 'HASHBANGPERL',
 734     ld          => 'LD',
 735     mt          => 'MT',
 736     ranlib      => 'RANLIB',
 737     rc          => 'RC',
 738     rm          => 'RM',
 739    );
 740
 741 # Initialisers coming from 'config' scripts
 742 $config{defines} = [ split(/$list_separator_re/, env('__CNF_CPPDEFINES')) ];
 743 $config{includes} = [ split(/$list_separator_re/, env('__CNF_CPPINCLUDES')) ];
 744 $config{cppflags} = [ env('__CNF_CPPFLAGS') || () ];
 745 $config{cflags} = [ env('__CNF_CFLAGS') || () ];
 746 $config{cxxflags} = [ env('__CNF_CXXFLAGS') || () ];
 747 $config{lflags} = [ env('__CNF_LDFLAGS') || () ];
 748 $config{ex_libs} = [ env('__CNF_LDLIBS') || () ];
 749
 750 $config{openssl_api_defines}=[];
 751 $config{openssl_sys_defines}=[];
 752 $config{openssl_feature_defines}=[];
 753 $config{options}="";
 754 $config{build_type} = "release";
 755 my $target="";
 756
 757 my %cmdvars = ();               # Stores FOO='blah' type arguments
 758 my %unsupported_options = ();
 759 my %deprecated_options = ();
 760 # If you change this, update apps/version.c
 761 my @known_seed_sources = qw(getrandom devrandom os egd none rdcpu librandom);
 762 my @seed_sources = ();
 763 while (@argvcopy)
 764         {
 765         $_ = shift @argvcopy;
 766
 767         # Support env variable assignments among the options
 768         if (m|^(\w+)=(.+)?$|)
 769                 {
 770                 $cmdvars{$1} = $2;
 771                 # Every time a variable is given as a configuration argument,
 772                 # it acts as a reset if the variable.
 773                 if (exists $user{$1})
 774                         {
 775                         $user{$1} = ref $user{$1} eq "ARRAY" ? [] : undef;
 776                         }
 777                 #if (exists $useradd{$1})
 778                 #       {
 779                 #       $useradd{$1} = [];
 780                 #       }
 781                 next;
 782                 }
 783
 784         # VMS is a case insensitive environment, and depending on settings
 785         # out of our control, we may receive options uppercased.  Let's
 786         # downcase at least the part before any equal sign.
 787         if ($^O eq "VMS")
 788                 {
 789                 s/^([^=]*)/lc($1)/e;
 790                 }
 791
 792         # some people just can't read the instructions, clang people have to...
 793         s/^-no-(?!integrated-as)/no-/;
 794
 795         # rewrite some options in "enable-..." form
 796         s /^-?-?shared$/enable-shared/;
 797         s /^sctp$/enable-sctp/;
 798         s /^threads$/enable-threads/;
 799         s /^zlib$/enable-zlib/;
 800         s /^zlib-dynamic$/enable-zlib-dynamic/;
 801         s /^fips$/enable-fips/;
 802
 803         if (/^(no|disable|enable)-(.+)$/)
 804                 {
 805                 my $word = $2;
 806                 if ($word !~ m|hw(?:-.+)| # special treatment for hw regexp opt
 807                         && !exists $deprecated_disablables{$word}
 808                         && !grep { $word eq $_ } @disablables)
 809                         {
 810                         $unsupported_options{$_} = 1;
 811                         next;
 812                         }
 813                 }
 814         if (/^no-(.+)$/ || /^disable-(.+)$/)
 815                 {
 816                 foreach my $proto ((@tls, @dtls))
 817                         {
 818                         if ($1 eq "$proto-method")
 819                                 {
 820                                 $disabled{"$proto"} = "option($proto-method)";
 821                                 last;
 822                                 }
 823                         }
 824                 if ($1 eq "dtls")
 825                         {
 826                         foreach my $proto (@dtls)
 827                                 {
 828                                 $disabled{$proto} = "option(dtls)";
 829                                 }
 830                         $disabled{"dtls"} = "option(dtls)";
 831                         }
 832                 elsif ($1 eq "ssl")
 833                         {
 834                         # Last one of its kind
 835                         $disabled{"ssl3"} = "option(ssl)";
 836                         }
 837                 elsif ($1 eq "tls")
 838                         {
 839                         # XXX: Tests will fail if all SSL/TLS
 840                         # protocols are disabled.
 841                         foreach my $proto (@tls)
 842                                 {
 843                                 $disabled{$proto} = "option(tls)";
 844                                 }
 845                         }
 846                 elsif ($1 eq "static-engine")
 847                         {
 848                         delete $disabled{"dynamic-engine"};
 849                         }
 850                 elsif ($1 eq "dynamic-engine")
 851                         {
 852                         $disabled{"dynamic-engine"} = "option";
 853                         }
 854                 elsif (exists $deprecated_disablables{$1})
 855                         {
 856                         $deprecated_options{$_} = 1;
 857                         if (defined $deprecated_disablables{$1})
 858                                 {
 859                                 $disabled{$deprecated_disablables{$1}} = "option";
 860                                 }
 861                         }
 862                 elsif ($1 =~ m|hw(?:-.+)|) # deprecate hw options in regexp form
 863                         {
 864                         $deprecated_options{$_} = 1;
 865                         }
 866                 else
 867                         {
 868                         $disabled{$1} = "option";
 869                         }
 870                 # No longer an automatic choice
 871                 $auto_threads = 0 if ($1 eq "threads");
 872                 }
 873         elsif (/^enable-(.+)$/)
 874                 {
 875                 if ($1 eq "static-engine")
 876                         {
 877                         $disabled{"dynamic-engine"} = "option";
 878                         }
 879                 elsif ($1 eq "dynamic-engine")
 880                         {
 881                         delete $disabled{"dynamic-engine"};
 882                         }
 883                 elsif ($1 eq "zlib-dynamic")
 884                         {
 885                         delete $disabled{"zlib"};
 886                         }
 887                 my $algo = $1;
 888                 delete $disabled{$algo};
 889
 890                 # No longer an automatic choice
 891                 $auto_threads = 0 if ($1 eq "threads");
 892                 }
 893         elsif (/^-d$/)          # From older 'config'
 894                 {
 895                 $config{build_type} = "debug";
 896                 }
 897         elsif (/^-v$/)          # From older 'config'
 898                 {
 899                 $guess_opts{verbose} = 1;
 900                 }
 901         elsif (/^-w$/)          # From older 'config'
 902                 {
 903                 $guess_opts{nowait} = 1;
 904                 }
 905         elsif (/^-t$/)          # From older 'config'
 906                 {
 907                 $dryrun = 1;
 908                 }
 909         elsif (/^--strict-warnings$/)
 910                 {
 911                 # Pretend that our strict flags is a C flag, and replace it
 912                 # with the proper flags later on
 913                 push @{$useradd{CFLAGS}}, '--ossl-strict-warnings';
 914                 $strict_warnings=1;
 915                 }
 916         elsif (/^--debug$/)
 917                 {
 918                 $config{build_type} = "debug";
 919                 }
 920         elsif (/^--release$/)
 921                 {
 922                 $config{build_type} = "release";
 923                 }
 924         elsif (/^386$/)
 925                 { $config{processor}=386; }
 926         elsif (/^rsaref$/)
 927                 {
 928                 # No RSAref support any more since it's not needed.
 929                 # The check for the option is there so scripts aren't
 930                 # broken
 931                 }
 932         elsif (m|^[-+/]|)
 933                 {
 934                 if (/^--prefix=(.*)$/)
 935                         {
 936                         $config{prefix}=$1;
 937                         die "Directory given with --prefix MUST be absolute\n"
 938                                 unless file_name_is_absolute($config{prefix});
 939                         }
 940                 elsif (/^--api=(.*)$/)
 941                         {
 942                         my $api = $1;
 943                         die "Unknown API compatibility level $api"
 944                                 unless defined $apitable->{$api};
 945                         $config{api}=$apitable->{$api};
 946                         }
 947                 elsif (/^--libdir=(.*)$/)
 948                         {
 949                         $config{libdir}=$1;
 950                         }
 951                 elsif (/^--openssldir=(.*)$/)
 952                         {
 953                         $config{openssldir}=$1;
 954                         }
 955                 elsif (/^--with-zlib-lib=(.*)$/)
 956                         {
 957                         $withargs{zlib_lib}=$1;
 958                         }
 959                 elsif (/^--with-zlib-include=(.*)$/)
 960                         {
 961                         $withargs{zlib_include}=$1;
 962                         }
 963                 elsif (/^--with-fuzzer-lib=(.*)$/)
 964                         {
 965                         $withargs{fuzzer_lib}=$1;
 966                         }
 967                 elsif (/^--with-fuzzer-include=(.*)$/)
 968                         {
 969                         $withargs{fuzzer_include}=$1;
 970                         }
 971                 elsif (/^--with-rand-seed=(.*)$/)
 972                         {
 973                         foreach my $x (split(m|,|, $1))
 974                             {
 975                             die "Unknown --with-rand-seed choice $x\n"
 976                                 if ! grep { $x eq $_ } @known_seed_sources;
 977                             push @seed_sources, $x;
 978                             }
 979                         }
 980                 elsif (/^--fips-key=(.*)$/)
 981                         {
 982                         $user{FIPSKEY}=lc($1);
 983                         die "Non-hex character in FIPS key\n"
 984                            if $user{FIPSKEY} =~ /[^a-f0-9]/;
 985                         die "FIPS key must have even number of characters\n"
 986                            if length $1 & 1;
 987                         die "FIPS key too long (64 bytes max)\n"
 988                            if length $1 > 64;
 989                         }
 990                 elsif (/^--banner=(.*)$/)
 991                         {
 992                         $banner = $1 . "\n";
 993                         }
 994                 elsif (/^--cross-compile-prefix=(.*)$/)
 995                         {
 996                         $user{CROSS_COMPILE}=$1;
 997                         }
 998                 elsif (/^--config=(.*)$/)
 999                         {
1000                         read_config $1;
1001                         }
1002                 elsif (/^-l(.*)$/)
1003                         {
1004                         push @{$useradd{LDLIBS}}, $_;
1005                         }
1006                 elsif (/^-framework$/)
1007                         {
1008                         push @{$useradd{LDLIBS}}, $_, shift(@argvcopy);
1009                         }
1010                 elsif (/^-L(.*)$/ or /^-Wl,/)
1011                         {
1012                         push @{$useradd{LDFLAGS}}, $_;
1013                         }
1014                 elsif (/^-rpath$/ or /^-R$/)
1015                         # -rpath is the OSF1 rpath flag
1016                         # -R is the old Solaris rpath flag
1017                         {
1018                         my $rpath = shift(@argvcopy) || "";
1019                         $rpath .= " " if $rpath ne "";
1020                         push @{$useradd{LDFLAGS}}, $_, $rpath;
1021                         }
1022                 elsif (/^-static$/)
1023                         {
1024                         push @{$useradd{LDFLAGS}}, $_;
1025                         }
1026                 elsif (m|^[-/]D(.*)$|)
1027                         {
1028                         push @{$useradd{CPPDEFINES}}, $1;
1029                         }
1030                 elsif (m|^[-/]I(.*)$|)
1031                         {
1032                         push @{$useradd{CPPINCLUDES}}, $1;
1033                         }
1034                 elsif (/^-Wp,$/)
1035                         {
1036                         push @{$useradd{CPPFLAGS}}, $1;
1037                         }
1038                 else    # common if (/^[-+]/), just pass down...
1039                         {
1040                         # Treat %xx as an ASCII code (e.g. replace %20 by a space character).
1041                         # This provides a simple way to pass options with arguments separated
1042                         # by spaces without quoting (e.g. -opt%20arg translates to -opt arg).
1043                         $_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
1044                         push @{$useradd{CFLAGS}}, $_;
1045                         push @{$useradd{CXXFLAGS}}, $_;
1046                         }
1047                 }
1048         elsif (m|^/|)
1049                 {
1050                 # Treat %xx as an ASCII code (e.g. replace %20 by a space character).
1051                 # This provides a simple way to pass options with arguments separated
1052                 # by spaces without quoting (e.g. /opt%20arg translates to /opt arg).
1053                 $_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
1054                 push @{$useradd{CFLAGS}}, $_;
1055                 push @{$useradd{CXXFLAGS}}, $_;
1056                 }
1057         else
1058                 {
1059                 die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
1060                 $target=$_;
1061                 }
1062         unless ($_ eq $target || /^no-/ || /^disable-/)
1063                 {
1064                 # "no-..." follows later after implied deactivations
1065                 # have been derived.  (Don't take this too seriously,
1066                 # we really only write OPTIONS to the Makefile out of
1067                 # nostalgia.)
1068
1069                 if ($config{options} eq "")
1070                         { $config{options} = $_; }
1071                 else
1072                         { $config{options} .= " ".$_; }
1073                 }
1074         }
1075
1076 if (keys %deprecated_options)
1077         {
1078         warn "***** Deprecated options: ",
1079                 join(", ", keys %deprecated_options), "\n";
1080         }
1081 if (keys %unsupported_options)
1082         {
1083         die "***** Unsupported options: ",
1084                 join(", ", keys %unsupported_options), "\n";
1085         }
1086
1087 # If any %useradd entry has been set, we must check that the "make
1088 # variables" haven't been set.  We start by checking of any %useradd entry
1089 # is set.
1090 if (grep { scalar @$_ > 0 } values %useradd) {
1091     # Hash of env / make variables names.  The possible values are:
1092     # 1 - "make vars"
1093     # 2 - %useradd entry set
1094     # 3 - both set
1095     my %detected_vars =
1096         map { my $v = 0;
1097               $v += 1 if $cmdvars{$_};
1098               $v += 2 if @{$useradd{$_}};
1099               $_ => $v }
1100         keys %useradd;
1101
1102     # If any of the corresponding "make variables" is set, we error
1103     if (grep { $_ & 1 } values %detected_vars) {
1104         my $names = join(', ', grep { $detected_vars{$_} > 0 }
1105                                sort keys %detected_vars);
1106         die <<"_____";
1107 ***** Mixing make variables and additional compiler/linker flags as
1108 ***** configure command line option is not permitted.
1109 ***** Affected make variables: $names
1110 _____
1111     }
1112 }
1113
1114 # Check through all supported command line variables to see if any of them
1115 # were set, and canonicalise the values we got.  If no compiler or linker
1116 # flag or anything else that affects %useradd was set, we also check the
1117 # environment for values.
1118 my $anyuseradd =
1119     grep { defined $_ && (ref $_ ne 'ARRAY' || @$_) } values %useradd;
1120 foreach (keys %user) {
1121     my $value = $cmdvars{$_};
1122     $value //= env($_) unless $anyuseradd;
1123     $value //=
1124         defined $user_synonyms{$_} ? $cmdvars{$user_synonyms{$_}} : undef;
1125     $value //= defined $user_synonyms{$_} ? env($user_synonyms{$_}) : undef
1126         unless $anyuseradd;
1127
1128     if (defined $value) {
1129         if (ref $user{$_} eq 'ARRAY') {
1130             if ($_ eq 'CPPDEFINES' || $_ eq 'CPPINCLUDES') {
1131                 $user{$_} = [ split /$list_separator_re/, $value ];
1132             } else {
1133                 $user{$_} = [ $value ];
1134             }
1135         } elsif (!defined $user{$_}) {
1136             $user{$_} = $value;
1137         }
1138     }
1139 }
1140
1141 if (grep { /-rpath\b/ } ($user{LDFLAGS} ? @{$user{LDFLAGS}} : ())
1142     && !$disabled{shared}
1143     && !($disabled{asan} && $disabled{msan} && $disabled{ubsan})) {
1144     die "***** Cannot simultaneously use -rpath, shared libraries, and\n",
1145         "***** any of asan, msan or ubsan\n";
1146 }
1147
1148 # If no target was given, try guessing.
1149 unless ($target) {
1150     my %system_config = OpenSSL::config::get_platform(%guess_opts, %user);
1151
1152     # The $system_config{disable} is used to populate %disabled with
1153     # entries that aren't already there.
1154     foreach ( @{$system_config{disable} // []} ) {
1155         $disabled{$_} = 'system' unless defined $disabled{$_};
1156     }
1157     delete $system_config{disable};
1158
1159     # Override config entries with stuff from the guesser.
1160     # It's assumed that this really is nothing new.
1161     %config = ( %config, %system_config );
1162     $target = $system_config{target};
1163 }
1164
1165 sub disable {
1166     my $disable_type = shift;
1167
1168     for (@_) {
1169         $disabled{$_} = $disable_type;
1170     }
1171
1172     my @tocheckfor = (@_ ? @_ : keys %disabled);
1173     while (@tocheckfor) {
1174         my %new_tocheckfor = ();
1175         my @cascade_copy = (@disable_cascades);
1176         while (@cascade_copy) {
1177             my ($test, $descendents) =
1178                 (shift @cascade_copy, shift @cascade_copy);
1179             if (ref($test) eq "CODE" ? $test->() : defined($disabled{$test})) {
1180                 foreach (grep { !defined($disabled{$_}) } @$descendents) {
1181                     $new_tocheckfor{$_} = 1; $disabled{$_} = "cascade";
1182                 }
1183             }
1184         }
1185         @tocheckfor = (keys %new_tocheckfor);
1186     }
1187 }
1188 disable();                     # First cascade run
1189
1190 our $die = sub { die @_; };
1191 if ($target eq "TABLE") {
1192     local $die = sub { warn @_; };
1193     foreach (sort keys %table) {
1194         print_table_entry($_, "TABLE");
1195     }
1196     exit 0;
1197 }
1198
1199 if ($target eq "LIST") {
1200     foreach (sort keys %table) {
1201         print $_,"\n" unless $table{$_}->{template};
1202     }
1203     exit 0;
1204 }
1205
1206 if ($target eq "HASH") {
1207     local $die = sub { warn @_; };
1208     print "%table = (\n";
1209     foreach (sort keys %table) {
1210         print_table_entry($_, "HASH");
1211     }
1212     exit 0;
1213 }
1214
1215 print "Configuring OpenSSL version $config{full_version} ";
1216 print "for target $target\n";
1217
1218 if (scalar(@seed_sources) == 0) {
1219     print "Using os-specific seed configuration\n";
1220     push @seed_sources, 'os';
1221 }
1222 if (scalar(grep { $_ eq 'egd' } @seed_sources) > 0) {
1223     delete $disabled{'egd'};
1224 }
1225 if (scalar(grep { $_ eq 'none' } @seed_sources) > 0) {
1226     die "Cannot seed with none and anything else" if scalar(@seed_sources) > 1;
1227     warn <<_____ if scalar(@seed_sources) == 1;
1228
1229 ============================== WARNING ===============================
1230 You have selected the --with-rand-seed=none option, which effectively
1231 disables automatic reseeding of the OpenSSL random generator.
1232 All operations depending on the random generator such as creating keys
1233 will not work unless the random generator is seeded manually by the
1234 application.
1235
1236 Please read the 'Note on random number generation' section in the
1237 INSTALL.md instructions and the RAND_DRBG(7) manual page for more
1238 details.
1239 ============================== WARNING ===============================
1240
1241 _____
1242 }
1243 push @{$config{openssl_feature_defines}},
1244      map { (my $x = $_) =~ tr|[\-a-z]|[_A-Z]|; "OPENSSL_RAND_SEED_$x" }
1245         @seed_sources;
1246
1247 # Backward compatibility?
1248 if ($target =~ m/^CygWin32(-.*)$/) {
1249     $target = "Cygwin".$1;
1250 }
1251
1252 # Support for legacy targets having a name starting with 'debug-'
1253 my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
1254 if ($d) {
1255     $config{build_type} = "debug";
1256
1257     # If we do not find debug-foo in the table, the target is set to foo.
1258     if (!$table{$target}) {
1259         $target = $t;
1260     }
1261 }
1262
1263 if ($target) {
1264     # It's possible that we have different config targets for specific
1265     # toolchains, so we try to detect them, and go for the plain config
1266     # target if not.
1267     my $found;
1268     foreach ( ( "$target-$user{CC}", "$target", undef ) ) {
1269         $found=$_ if $table{$_} && !$table{$_}->{template};
1270         last if $found;
1271     }
1272     $target = $found;
1273 } else {
1274     # If we don't have a config target now, we try the C compiler as we
1275     # fallback
1276     my $cc = $user{CC} // 'cc';
1277     $target = $cc if $table{$cc} && !$table{$cc}->{template};
1278 }
1279
1280 &usage unless $target;
1281
1282 exit 0 if $dryrun;              # From older 'config'
1283
1284 $config{target} = $target;
1285 my %target = resolve_config($target);
1286
1287 foreach (keys %target_attr_translate) {
1288     $target{$target_attr_translate{$_}} = $target{$_}
1289         if $target{$_};
1290     delete $target{$_};
1291 }
1292
1293 %target = ( %{$table{DEFAULTS}}, %target );
1294
1295 my %conf_files = map { $_ => 1 } (@{$target{_conf_fname_int}});
1296 $config{conf_files} = [ sort keys %conf_files ];
1297
1298 # Using sub disable within these loops may prove fragile, so we run
1299 # a cascade afterwards
1300 foreach my $feature (@{$target{disable}}) {
1301     if (exists $deprecated_disablables{$feature}) {
1302         warn "***** config $target disables deprecated feature $feature\n";
1303     } elsif (!grep { $feature eq $_ } @disablables) {
1304         die "***** config $target disables unknown feature $feature\n";
1305     }
1306     $disabled{$feature} = 'config';
1307 }
1308 foreach my $feature (@{$target{enable}}) {
1309     if ("default" eq ($disabled{$feature} // "")) {
1310         if (exists $deprecated_disablables{$feature}) {
1311             warn "***** config $target enables deprecated feature $feature\n";
1312         } elsif (!grep { $feature eq $_ } @disablables) {
1313             die "***** config $target enables unknown feature $feature\n";
1314         }
1315         delete $disabled{$feature};
1316     }
1317 }
1318
1319 # If uplink_arch isn't defined, disable uplink
1320 $disabled{uplink} = 'no uplink_arch' unless (defined $target{uplink_arch});
1321 # If asm_arch isn't defined, disable asm
1322 $disabled{asm} = 'no asm_arch' unless (defined $target{asm_arch});
1323
1324 disable();                      # Run a cascade now
1325
1326 $target{CXXFLAGS}//=$target{CFLAGS} if $target{CXX};
1327 $target{cxxflags}//=$target{cflags} if $target{CXX};
1328 $target{exe_extension}=".exe" if ($config{target} eq "DJGPP");
1329 $target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
1330
1331 # Fill %config with values from %user, and in case those are undefined or
1332 # empty, use values from %target (acting as a default).
1333 foreach (keys %user) {
1334     my $ref_type = ref $user{$_};
1335
1336     # Temporary function.  Takes an intended ref type (empty string or "ARRAY")
1337     # and a value that's to be coerced into that type.
1338     my $mkvalue = sub {
1339         my $type = shift;
1340         my $value = shift;
1341         my $undef_p = shift;
1342
1343         die "Too many arguments for \$mkvalue" if @_;
1344
1345         while (ref $value eq 'CODE') {
1346             $value = $value->();
1347         }
1348
1349         if ($type eq 'ARRAY') {
1350             return undef unless defined $value;
1351             return undef if ref $value ne 'ARRAY' && !$value;
1352             return undef if ref $value eq 'ARRAY' && !@$value;
1353             return [ $value ] unless ref $value eq 'ARRAY';
1354         }
1355         return undef unless $value;
1356         return $value;
1357     };
1358
1359     $config{$_} =
1360         $mkvalue->($ref_type, $user{$_})
1361         || $mkvalue->($ref_type, $target{$_});
1362     delete $config{$_} unless defined $config{$_};
1363 }
1364
1365 # Finish up %config by appending things the user gave us on the command line
1366 # apart from "make variables"
1367 foreach (keys %useradd) {
1368     # The must all be lists, so we assert that here
1369     die "internal error: \$useradd{$_} isn't an ARRAY\n"
1370         unless ref $useradd{$_} eq 'ARRAY';
1371
1372     if (defined $config{$_}) {
1373         push @{$config{$_}}, @{$useradd{$_}};
1374     } else {
1375         $config{$_} = [ @{$useradd{$_}} ];
1376     }
1377 }
1378 # At this point, we can forget everything about %user and %useradd,
1379 # because it's now all been merged into the corresponding $config entry
1380
1381 if (grep { $_ =~ /(?:^|\s)-static(?:\s|$)/ } @{$config{LDFLAGS}}) {
1382     disable('static', 'pic', 'threads');
1383 }
1384
1385 # Allow overriding the build file name
1386 $config{build_file} = env('BUILDFILE') || $target{build_file} || "Makefile";
1387
1388 # Make sure build_scheme is consistent.
1389 $target{build_scheme} = [ $target{build_scheme} ]
1390     if ref($target{build_scheme}) ne "ARRAY";
1391
1392 my ($builder, $builder_platform, @builder_opts) =
1393     @{$target{build_scheme}};
1394
1395 foreach my $checker (($builder_platform."-".$target{build_file}."-checker.pm",
1396                       $builder_platform."-checker.pm")) {
1397     my $checker_path = catfile($srcdir, "Configurations", $checker);
1398     if (-f $checker_path) {
1399         my $fn = $ENV{CONFIGURE_CHECKER_WARN}
1400             ? sub { warn $@; } : sub { die $@; };
1401         if (! do $checker_path) {
1402             if ($@) {
1403                 $fn->($@);
1404             } elsif ($!) {
1405                 $fn->($!);
1406             } else {
1407                 $fn->("The detected tools didn't match the platform\n");
1408             }
1409         }
1410         last;
1411     }
1412 }
1413
1414 push @{$config{defines}}, "NDEBUG"    if $config{build_type} eq "release";
1415
1416 if ($target =~ /^mingw/ && `$config{CC} --target-help 2>&1` =~ m/-mno-cygwin/m)
1417         {
1418         push @{$config{cflags}}, "-mno-cygwin";
1419         push @{$config{cxxflags}}, "-mno-cygwin" if $config{CXX};
1420         push @{$config{shared_ldflag}}, "-mno-cygwin";
1421         }
1422
1423 if ($target =~ /linux.*-mips/ && !$disabled{asm}
1424         && !grep { $_ !~ /-m(ips|arch=)/ } (@{$config{CFLAGS}})) {
1425         # minimally required architecture flags for assembly modules
1426         my $value;
1427         $value = '-mips2' if ($target =~ /mips32/);
1428         $value = '-mips3' if ($target =~ /mips64/);
1429         unshift @{$config{cflags}}, $value;
1430         unshift @{$config{cxxflags}}, $value if $config{CXX};
1431 }
1432
1433 # If threads aren't disabled, check how possible they are
1434 unless ($disabled{threads}) {
1435     if ($auto_threads) {
1436         # Enabled by default, disable it forcibly if unavailable
1437         if ($target{thread_scheme} eq "(unknown)") {
1438             disable("unavailable", 'threads');
1439         }
1440     } else {
1441         # The user chose to enable threads explicitly, let's see
1442         # if there's a chance that's possible
1443         if ($target{thread_scheme} eq "(unknown)") {
1444             # If the user asked for "threads" and we don't have internal
1445             # knowledge how to do it, [s]he is expected to provide any
1446             # system-dependent compiler options that are necessary.  We
1447             # can't truly check that the given options are correct, but
1448             # we expect the user to know what [s]He is doing.
1449             if (!@{$config{CFLAGS}} && !@{$config{CPPDEFINES}}) {
1450                 die "You asked for multi-threading support, but didn't\n"
1451                     ,"provide any system-specific compiler options\n";
1452             }
1453         }
1454     }
1455 }
1456
1457 # Find out if clang's sanitizers have been enabled with -fsanitize
1458 # flags and ensure that the corresponding %disabled elements area
1459 # removed to reflect that the sanitizers are indeed enabled.
1460 my %detected_sanitizers = ();
1461 foreach (grep /^-fsanitize=/, @{$config{CFLAGS} || []}) {
1462     (my $checks = $_) =~ s/^-fsanitize=//;
1463     foreach (split /,/, $checks) {
1464         my $d = { address       => 'asan',
1465                   undefined     => 'ubsan',
1466                   memory        => 'msan' } -> {$_};
1467         next unless defined $d;
1468
1469         $detected_sanitizers{$d} = 1;
1470         if (defined $disabled{$d}) {
1471             die "***** Conflict between disabling $d and enabling $_ sanitizer"
1472                 if $disabled{$d} ne "default";
1473             delete $disabled{$d};
1474         }
1475     }
1476 }
1477
1478 # If threads still aren't disabled, add a C macro to ensure the source
1479 # code knows about it.  Any other flag is taken care of by the configs.
1480 unless($disabled{threads}) {
1481     push @{$config{openssl_feature_defines}}, "OPENSSL_THREADS";
1482 }
1483
1484 my $no_shared_warn=0;
1485 if (($target{shared_target} // '') eq "")
1486         {
1487         $no_shared_warn = 1
1488             if (!$disabled{shared} || !$disabled{"dynamic-engine"});
1489         disable('no-shared-target', 'pic');
1490         }
1491
1492 if ($disabled{"dynamic-engine"}) {
1493         $config{dynamic_engines} = 0;
1494 } else {
1495         $config{dynamic_engines} = 1;
1496 }
1497
1498 unless ($disabled{asan} || defined $detected_sanitizers{asan}) {
1499     push @{$config{cflags}}, "-fsanitize=address";
1500 }
1501
1502 unless ($disabled{ubsan} || defined $detected_sanitizers{ubsan}) {
1503     # -DPEDANTIC or -fnosanitize=alignment may also be required on some
1504     # platforms.
1505     push @{$config{cflags}}, "-fsanitize=undefined", "-fno-sanitize-recover=all";
1506 }
1507
1508 unless ($disabled{msan} || defined $detected_sanitizers{msan}) {
1509   push @{$config{cflags}}, "-fsanitize=memory";
1510 }
1511
1512 unless ($disabled{"fuzz-libfuzzer"} && $disabled{"fuzz-afl"}
1513         && $disabled{asan} && $disabled{ubsan} && $disabled{msan}) {
1514     push @{$config{cflags}}, "-fno-omit-frame-pointer", "-g";
1515     push @{$config{cxxflags}}, "-fno-omit-frame-pointer", "-g" if $config{CXX};
1516 }
1517 #
1518 # Platform fix-ups
1519 #
1520
1521 # This saves the build files from having to check
1522 if ($disabled{pic})
1523         {
1524         foreach (qw(shared_cflag shared_cxxflag shared_cppflag
1525                     shared_defines shared_includes shared_ldflag
1526                     module_cflags module_cxxflags module_cppflags
1527                     module_defines module_includes module_lflags))
1528                 {
1529                 delete $config{$_};
1530                 $target{$_} = "";
1531                 }
1532         }
1533 else
1534         {
1535         push @{$config{lib_defines}}, "OPENSSL_PIC";
1536         }
1537
1538 if ($target{sys_id} ne "")
1539         {
1540         push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
1541         }
1542
1543 my %predefined_C = compiler_predefined($config{CROSS_COMPILE}.$config{CC});
1544 my %predefined_CXX = $config{CXX}
1545     ? compiler_predefined($config{CROSS_COMPILE}.$config{CXX})
1546     : ();
1547
1548 unless ($disabled{asm}) {
1549     # big endian systems can use ELFv2 ABI
1550     if ($target eq "linux-ppc64") {
1551         $target{perlasm_scheme} = "linux64v2" if ($predefined_C{_CALL_ELF} == 2);
1552     }
1553 }
1554
1555 # Check for makedepend capabilities.
1556 if (!$disabled{makedepend}) {
1557     # If the attribute makedep_scheme is defined, then we assume that the
1558     # config target and its associated build file are programmed to deal
1559     # with it.
1560     # If makedep_scheme is undefined, we go looking for GCC compatible
1561     # dependency making, and if that's not available, we try to fall back
1562     # on 'makedepend'.
1563     if ($target{makedep_scheme}) {
1564         $config{makedep_scheme} = $target{makedep_scheme};
1565         # If the makedepcmd attribute is defined, copy it.  If not, the
1566         # build files will have to fend for themselves.
1567         $config{makedepcmd} = $target{makedepcmd} if $target{makedepcmd};
1568     } elsif (($predefined_C{__GNUC__} // -1) >= 3
1569              && !($predefined_C{__APPLE_CC__} && !$predefined_C{__clang__})) {
1570         # We know that GNU C version 3 and up as well as all clang
1571         # versions support dependency generation, but Xcode did not
1572         # handle $cc -M before clang support (but claims __GNUC__ = 3)
1573         $config{makedep_scheme} = 'gcc';
1574     } else {
1575         # In all other cases, we look for 'makedepend', and set the
1576         # makedep_scheme value if we found it.
1577         $config{makedepcmd} = which('makedepend');
1578         $config{makedep_scheme} = 'makedepend' if $config{makedepcmd};
1579     }
1580
1581     # If no depend scheme is set, we disable makedepend
1582     disable('unavailable', 'makedepend') unless $config{makedep_scheme};
1583 }
1584
1585 if (!$disabled{asm} && !$predefined_C{__MACH__} && $^O ne 'VMS') {
1586     # probe for -Wa,--noexecstack option...
1587     if ($predefined_C{__clang__}) {
1588         # clang has builtin assembler, which doesn't recognize --help,
1589         # but it apparently recognizes the option in question on all
1590         # supported platforms even when it's meaningless. In other words
1591         # probe would fail, but probed option always accepted...
1592         push @{$config{cflags}}, "-Wa,--noexecstack", "-Qunused-arguments";
1593     } else {
1594         my $cc = $config{CROSS_COMPILE}.$config{CC};
1595         open(PIPE, "$cc -Wa,--help -c -o null.$$.o -x assembler /dev/null 2>&1 |");
1596         while(<PIPE>) {
1597             if (m/--noexecstack/) {
1598                 push @{$config{cflags}}, "-Wa,--noexecstack";
1599                 last;
1600             }
1601         }
1602         close(PIPE);
1603         unlink("null.$$.o");
1604     }
1605 }
1606
1607 # Deal with bn_ops ###################################################
1608
1609 $config{bn_ll}                  =0;
1610 my $def_int="unsigned int";
1611 $config{rc4_int}                =$def_int;
1612 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
1613
1614 my $count = 0;
1615 foreach (sort split(/\s+/,$target{bn_ops})) {
1616     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
1617     $config{bn_ll}=1                            if $_ eq 'BN_LLONG';
1618     $config{rc4_int}="unsigned char"            if $_ eq 'RC4_CHAR';
1619     ($config{b64l},$config{b64},$config{b32})
1620         =(0,1,0)                                if $_ eq 'SIXTY_FOUR_BIT';
1621     ($config{b64l},$config{b64},$config{b32})
1622         =(1,0,0)                                if $_ eq 'SIXTY_FOUR_BIT_LONG';
1623     ($config{b64l},$config{b64},$config{b32})
1624         =(0,0,1)                                if $_ eq 'THIRTY_TWO_BIT';
1625 }
1626 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
1627     if $count > 1;
1628
1629 $config{api} = $config{major} * 10000 + $config{minor} * 100
1630     unless $config{api};
1631 foreach (keys %$apitable) {
1632     $disabled{"deprecated-$_"} = "deprecation"
1633         if $disabled{deprecated} && $config{api} >= $apitable->{$_};
1634 }
1635
1636 disable();                      # Run a cascade now
1637
1638 # Hack cflags for better warnings (dev option) #######################
1639
1640 # "Stringify" the C and C++ flags string.  This permits it to be made part of
1641 # a string and works as well on command lines.
1642 $config{cflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
1643                         @{$config{cflags}} ];
1644 $config{cxxflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
1645                           @{$config{cxxflags}} ] if $config{CXX};
1646
1647 $config{openssl_api_defines} = [
1648     "OPENSSL_CONFIGURED_API=".$config{api},
1649 ];
1650
1651 my @strict_warnings_collection=();
1652 if ($strict_warnings)
1653         {
1654         my $wopt;
1655         my $gccver = $predefined_C{__GNUC__} // -1;
1656
1657         if ($gccver >= 4)
1658                 {
1659                 push @strict_warnings_collection, @gcc_devteam_warn;
1660                 push @strict_warnings_collection, @clang_devteam_warn
1661                     if (defined($predefined_C{__clang__}));
1662                 }
1663         elsif ($config{target} =~ /^VC-/)
1664                 {
1665                 push @strict_warnings_collection, @cl_devteam_warn;
1666                 }
1667         else
1668                 {
1669                 warn "WARNING --strict-warnings requires gcc[>=4] or gcc-alike, or MSVC"
1670                 }
1671         }
1672
1673 $config{CFLAGS} = [ map { $_ eq '--ossl-strict-warnings'
1674                               ? @strict_warnings_collection
1675                               : ( $_ ) }
1676                     @{$config{CFLAGS}} ];
1677
1678 unless ($disabled{afalgeng}) {
1679     $config{afalgeng}="";
1680     if (grep { $_ eq 'afalgeng' } @{$target{enable}}) {
1681         my $minver = 4*10000 + 1*100 + 0;
1682         if ($config{CROSS_COMPILE} eq "") {
1683             my $verstr = `uname -r`;
1684             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
1685             ($mi2) = $mi2 =~ /(\d+)/;
1686             my $ver = $ma*10000 + $mi1*100 + $mi2;
1687             if ($ver < $minver) {
1688                 disable('too-old-kernel', 'afalgeng');
1689             } else {
1690                 push @{$config{engdirs}}, "afalg";
1691             }
1692         } else {
1693             disable('cross-compiling', 'afalgeng');
1694         }
1695     } else {
1696         disable('not-linux', 'afalgeng');
1697     }
1698 }
1699
1700 unless ($disabled{devcryptoeng}) {
1701     if ($target =~ m/^BSD/) {
1702         my $maxver = 5*100 + 7;
1703         my $sysstr = `uname -s`;
1704         my $verstr = `uname -r`;
1705         $sysstr =~ s|\R$||;
1706         $verstr =~ s|\R$||;
1707         my ($ma, $mi, @rest) = split m|\.|, $verstr;
1708         my $ver = $ma*100 + $mi;
1709         if ($sysstr eq 'OpenBSD' && $ver >= $maxver) {
1710             disable('too-new-kernel', 'devcryptoeng');
1711         }
1712     }
1713 }
1714
1715 unless ($disabled{ktls}) {
1716     $config{ktls}="";
1717     if ($target =~ m/^linux/) {
1718         my $usr = "/usr/$config{cross_compile_prefix}";
1719         chop($usr);
1720         if ($config{cross_compile_prefix} eq "") {
1721             $usr = "/usr";
1722         }
1723         my $minver = (4 << 16) + (13 << 8) + 0;
1724         my @verstr = split(" ",`cat $usr/include/linux/version.h | grep LINUX_VERSION_CODE`);
1725
1726         if ($verstr[2] < $minver) {
1727             disable('too-old-kernel', 'ktls');
1728         }
1729     } elsif ($target =~ m/^BSD/) {
1730         my $cc = $config{CROSS_COMPILE}.$config{CC};
1731         system("printf '#include <sys/types.h>\n#include <sys/ktls.h>' | $cc -E - >/dev/null 2>&1");
1732         if ($? != 0) {
1733             disable('too-old-freebsd', 'ktls');
1734         }
1735     } else {
1736         disable('not-linux-or-freebsd', 'ktls');
1737     }
1738 }
1739
1740 push @{$config{openssl_other_defines}}, "OPENSSL_NO_KTLS" if ($disabled{ktls});
1741
1742 # Get the extra flags used when building shared libraries and modules.  We
1743 # do this late because some of them depend on %disabled.
1744
1745 # Make the flags to build DSOs the same as for shared libraries unless they
1746 # are already defined
1747 $target{module_cflags} = $target{shared_cflag} unless defined $target{module_cflags};
1748 $target{module_cxxflags} = $target{shared_cxxflag} unless defined $target{module_cxxflags};
1749 $target{module_ldflags} = $target{shared_ldflag} unless defined $target{module_ldflags};
1750 {
1751     my $shared_info_pl =
1752         catfile(dirname($0), "Configurations", "shared-info.pl");
1753     my %shared_info = read_eval_file($shared_info_pl);
1754     push @{$target{_conf_fname_int}}, $shared_info_pl;
1755     my $si = $target{shared_target};
1756     while (ref $si ne "HASH") {
1757         last if ! defined $si;
1758         if (ref $si eq "CODE") {
1759             $si = $si->();
1760         } else {
1761             $si = $shared_info{$si};
1762         }
1763     }
1764
1765     # Some of the 'shared_target' values don't have any entries in
1766     # %shared_info.  That's perfectly fine, AS LONG AS the build file
1767     # template knows how to handle this.  That is currently the case for
1768     # Windows and VMS.
1769     if (defined $si) {
1770         # Just as above, copy certain shared_* attributes to the corresponding
1771         # module_ attribute unless the latter is already defined
1772         $si->{module_cflags} = $si->{shared_cflag} unless defined $si->{module_cflags};
1773         $si->{module_cxxflags} = $si->{shared_cxxflag} unless defined $si->{module_cxxflags};
1774         $si->{module_ldflags} = $si->{shared_ldflag} unless defined $si->{module_ldflags};
1775         foreach (sort keys %$si) {
1776             $target{$_} = defined $target{$_}
1777                 ? add($si->{$_})->($target{$_})
1778                 : $si->{$_};
1779         }
1780     }
1781 }
1782
1783 # ALL MODIFICATIONS TO %disabled, %config and %target MUST BE DONE FROM HERE ON
1784
1785 ######################################################################
1786 # Build up information for skipping certain directories depending on disabled
1787 # features, as well as setting up macros for disabled features.
1788
1789 # This is a tentative database of directories to skip.  Some entries may not
1790 # correspond to anything real, but that's ok, they will simply be ignored.
1791 # The actual processing of these entries is done in the build.info lookup
1792 # loop further down.
1793 #
1794 # The key is a Unix formatted path in the source tree, the value is an index
1795 # into %disabled_info, so any existing path gets added to a corresponding
1796 # 'skipped' entry in there with the list of skipped directories.
1797 my %skipdir = ();
1798 my %disabled_info = ();         # For configdata.pm
1799 foreach my $what (sort keys %disabled) {
1800     # There are deprecated disablables that translate to themselves.
1801     # They cause disabling cascades, but should otherwise not regiter.
1802     next if $deprecated_disablables{$what};
1803     # The generated $disabled{"deprecated-x.y"} entries are special
1804     # and treated properly elsewhere
1805     next if $what =~ m|^deprecated-|;
1806
1807     $config{options} .= " no-$what";
1808
1809     if (!grep { $what eq $_ } ( 'buildtest-c++', 'fips', 'threads', 'shared',
1810                                 'module', 'pic', 'dynamic-engine', 'makedepend',
1811                                 'zlib-dynamic', 'zlib', 'sse2', 'legacy' )) {
1812         (my $WHAT = uc $what) =~ s|-|_|g;
1813         my $skipdir = $what;
1814
1815         # fix-up crypto/directory name(s)
1816         $skipdir = "ripemd" if $what eq "rmd160";
1817         $skipdir = "whrlpool" if $what eq "whirlpool";
1818
1819         my $macro = $disabled_info{$what}->{macro} = "OPENSSL_NO_$WHAT";
1820         push @{$config{openssl_feature_defines}}, $macro;
1821
1822         $skipdir{engines} = $what if $what eq 'engine';
1823         $skipdir{"crypto/$skipdir"} = $what
1824             unless $what eq 'async' || $what eq 'err' || $what eq 'dso';
1825     }
1826 }
1827
1828 if ($disabled{"dynamic-engine"}) {
1829     push @{$config{openssl_feature_defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
1830 } else {
1831     push @{$config{openssl_feature_defines}}, "OPENSSL_NO_STATIC_ENGINE";
1832 }
1833
1834 # If we use the unified build, collect information from build.info files
1835 my %unified_info = ();
1836
1837 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
1838 if ($builder eq "unified") {
1839     use Text::Template 1.46;
1840
1841     sub cleandir {
1842         my $base = shift;
1843         my $dir = shift;
1844         my $relativeto = shift || ".";
1845
1846         $dir = catdir($base,$dir) unless isabsolute($dir);
1847
1848         # Make sure the directories we're building in exists
1849         mkpath($dir);
1850
1851         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
1852         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
1853         return $res;
1854     }
1855
1856     sub cleanfile {
1857         my $base = shift;
1858         my $file = shift;
1859         my $relativeto = shift || ".";
1860
1861         $file = catfile($base,$file) unless isabsolute($file);
1862
1863         my $d = dirname($file);
1864         my $f = basename($file);
1865
1866         # Make sure the directories we're building in exists
1867         mkpath($d);
1868
1869         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
1870         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
1871         return $res;
1872     }
1873
1874     # Store the name of the template file we will build the build file from
1875     # in %config.  This may be useful for the build file itself.
1876     my @build_file_template_names =
1877         ( $builder_platform."-".$target{build_file}.".tmpl",
1878           $target{build_file}.".tmpl" );
1879     my @build_file_templates = ();
1880
1881     # First, look in the user provided directory, if given
1882     if (defined env($local_config_envname)) {
1883         @build_file_templates =
1884             map {
1885                 if ($^O eq 'VMS') {
1886                     # VMS environment variables are logical names,
1887                     # which can be used as is
1888                     $local_config_envname . ':' . $_;
1889                 } else {
1890                     catfile(env($local_config_envname), $_);
1891                 }
1892             }
1893             @build_file_template_names;
1894     }
1895     # Then, look in our standard directory
1896     push @build_file_templates,
1897         ( map { cleanfile($srcdir, catfile("Configurations", $_), $blddir) }
1898           @build_file_template_names );
1899
1900     my $build_file_template;
1901     for $_ (@build_file_templates) {
1902         $build_file_template = $_;
1903         last if -f $build_file_template;
1904
1905         $build_file_template = undef;
1906     }
1907     if (!defined $build_file_template) {
1908         die "*** Couldn't find any of:\n", join("\n", @build_file_templates), "\n";
1909     }
1910     $config{build_file_templates}
1911       = [ cleanfile($srcdir, catfile("Configurations", "common0.tmpl"),
1912                     $blddir),
1913            $build_file_template ];
1914
1915     my @build_dirs = ( [ ] );   # current directory
1916
1917     $config{build_infos} = [ ];
1918
1919     # We want to detect configdata.pm in the source tree, so we
1920     # don't use it if the build tree is different.
1921     my $src_configdata = cleanfile($srcdir, "configdata.pm", $blddir);
1922
1923     # Any source file that we recognise is placed in this hash table, with
1924     # the list of its intended destinations as value.  When everything has
1925     # been collected, there's a routine that checks that these source files
1926     # exist, or if they are generated, that the generator exists.
1927     my %check_exist = ();
1928     my %check_generate = ();
1929
1930     my %ordinals = ();
1931     while (@build_dirs) {
1932         my @curd = @{shift @build_dirs};
1933         my $sourced = catdir($srcdir, @curd);
1934         my $buildd = catdir($blddir, @curd);
1935
1936         my $unixdir = join('/', @curd);
1937         if (exists $skipdir{$unixdir}) {
1938             my $what = $skipdir{$unixdir};
1939             push @{$disabled_info{$what}->{skipped}}, catdir(@curd);
1940             next;
1941         }
1942
1943         mkpath($buildd);
1944
1945         my $f = 'build.info';
1946         # The basic things we're trying to build
1947         my @programs = ();
1948         my @libraries = ();
1949         my @modules = ();
1950         my @scripts = ();
1951
1952         my %sources = ();
1953         my %shared_sources = ();
1954         my %includes = ();
1955         my %defines = ();
1956         my %depends = ();
1957         my %generate = ();
1958         my %imagedocs = ();
1959         my %htmldocs = ();
1960         my %mandocs = ();
1961
1962         # Support for $variablename in build.info files.
1963         # Embedded perl code is the ultimate master, still.  If its output
1964         # contains a dollar sign, it had better be escaped, or it will be
1965         # taken for a variable name prefix.
1966         my %variables = ();
1967         # Variable name syntax
1968         my $variable_name_re = qr/(?P<VARIABLE>[[:alpha:]][[:alnum:]_]*)/;
1969         # Value modifier syntaxes
1970         my $variable_subst_re = qr/\/(?P<RE>(?:\\\/|.)*?)\/(?P<SUBST>.*?)/;
1971         # Variable reference
1972         my $variable_simple_re = qr/(?<!\\)\$${variable_name_re}/;
1973         my $variable_w_mod_re =
1974             qr/(?<!\\)\$\{${variable_name_re}(?P<MOD>(?:\\\/|.)*?)\}/;
1975         # Tie it all together
1976         my $variable_re = qr/${variable_simple_re}|${variable_w_mod_re}/;
1977
1978         my $expand_variables = sub {
1979             my $value = '';
1980             my $value_rest = shift;
1981
1982             if ($ENV{CONFIGURE_DEBUG_VARIABLE_EXPAND}) {
1983                 print STDERR
1984                     "DEBUG[\$expand_variables] Parsed '$value_rest' ...\n"
1985             }
1986
1987             while ($value_rest =~ /${variable_re}/) {
1988                 # We must save important regexp values, because the next
1989                 # regexp clears them
1990                 my $mod = $+{MOD};
1991                 my $variable_value = $variables{$+{VARIABLE}};
1992
1993                 $value_rest = $';
1994                 $value .= $`;
1995
1996                 # Process modifier expressions, if present
1997                 if (defined $mod) {
1998                     if ($mod =~ /^${variable_subst_re}$/) {
1999                         my $re = $+{RE};
2000                         my $subst = $+{SUBST};
2001
2002                         $variable_value =~ s/\Q$re\E/$subst/g;
2003
2004                         if ($ENV{CONFIGURE_DEBUG_VARIABLE_EXPAND}) {
2005                             print STDERR
2006                                 "DEBUG[\$expand_variables] ... and substituted ",
2007                                 "'$re' with '$subst'\n";
2008                         }
2009                     }
2010                 }
2011
2012                 $value .= $variable_value;
2013             }
2014             if ($ENV{CONFIGURE_DEBUG_VARIABLE_EXPAND}) {
2015                 print STDERR
2016                     "DEBUG[\$expand_variables] ... into: '$value$value_rest'\n";
2017             }
2018             return $value . $value_rest;
2019         };
2020
2021         # Support for attributes in build.info files
2022         my %attributes = ();
2023         my $handle_attributes = sub {
2024             my $attr_str = shift;
2025             my $ref = shift;
2026             my @goals = @_;
2027
2028             return unless defined $attr_str;
2029
2030             my @a = tokenize($attr_str, qr|\s*,\s*|);
2031             foreach my $a (@a) {
2032                 my $ac = 1;
2033                 my $ak = $a;
2034                 my $av = 1;
2035                 if ($a =~ m|^(!)?(.*?)\s* = \s*(.*?)$|x) {
2036                     $ac = ! $1;
2037                     $ak = $2;
2038                     $av = $3;
2039                 }
2040                 foreach my $g (@goals) {
2041                     if ($ac) {
2042                         $$ref->{$g}->{$ak} = $av;
2043                     } else {
2044                         delete $$ref->{$g}->{$ak};
2045                     }
2046                 }
2047             }
2048         };
2049
2050         # Support for pushing values on multiple indexes of a given hash
2051         # array.
2052         my $push_to = sub {
2053             my $valueref = shift;
2054             my $index_str = shift; # May be undef or empty
2055             my $attrref = shift;   # May be undef
2056             my $attr_str = shift;
2057             my @values = @_;
2058
2059             if (defined $index_str) {
2060                 my @indexes = ( '' );
2061                 if ($index_str !~ m|^\s*$|) {
2062                     @indexes = tokenize($index_str);
2063                 }
2064                 foreach (@indexes) {
2065                     push @{$valueref->{$_}}, @values;
2066                     if (defined $attrref) {
2067                         $handle_attributes->($attr_str, \$$attrref->{$_},
2068                                              @values);
2069                     }
2070                 }
2071             } else {
2072                 push @$valueref, @values;
2073                 $handle_attributes->($attr_str, $attrref, @values)
2074                     if defined $attrref;
2075             }
2076         };
2077
2078         if ($buildinfo_debug) {
2079             print STDERR "DEBUG: Reading ",catfile($sourced, $f),"\n";
2080         }
2081         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
2082         my $template =
2083             Text::Template->new(TYPE => 'FILE',
2084                                 SOURCE => catfile($sourced, $f),
2085                                 PREPEND => qq{use lib "$FindBin::Bin/util/perl";});
2086         die "Something went wrong with $sourced/$f: $!\n" unless $template;
2087         my @text =
2088             split /^/m,
2089             $template->fill_in(HASH => { config => \%config,
2090                                          target => \%target,
2091                                          disabled => \%disabled,
2092                                          withargs => \%withargs,
2093                                          builddir => abs2rel($buildd, $blddir),
2094                                          sourcedir => abs2rel($sourced, $blddir),
2095                                          buildtop => abs2rel($blddir, $blddir),
2096                                          sourcetop => abs2rel($srcdir, $blddir) },
2097                                DELIMITERS => [ "{-", "-}" ]);
2098
2099         # The top item of this stack has the following values
2100         # -2 positive already run and we found ELSE (following ELSIF should fail)
2101         # -1 positive already run (skip until ENDIF)
2102         # 0 negatives so far (if we're at a condition, check it)
2103         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
2104         # 2 positive ELSE (following ELSIF should fail)
2105         my @skip = ();
2106
2107         # A few useful generic regexps
2108         my $index_re = qr/\[\s*(?P<INDEX>(?:\\.|.)*?)\s*\]/;
2109         my $cond_re = qr/\[\s*(?P<COND>(?:\\.|.)*?)\s*\]/;
2110         my $attribs_re = qr/(?:\{\s*(?P<ATTRIBS>(?:\\.|.)*?)\s*\})?/;
2111         my $value_re = qr/(?P<VALUE>.*?)/;
2112         collect_information(
2113             collect_from_array([ @text ],
2114                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
2115                                                 $l1 =~ s/\\$//; $l1.$l2 }),
2116             # Info we're looking for
2117             qr/^\s* IF ${cond_re} \s*$/x
2118             => sub {
2119                 if (! @skip || $skip[$#skip] > 0) {
2120                     push @skip, !! $expand_variables->($+{COND});
2121                 } else {
2122                     push @skip, -1;
2123                 }
2124             },
2125             qr/^\s* ELSIF ${cond_re} \s*$/x
2126             => sub { die "ELSIF out of scope" if ! @skip;
2127                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
2128                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
2129                      $skip[$#skip] = !! $expand_variables->($+{COND})
2130                          if $skip[$#skip] == 0; },
2131             qr/^\s* ELSE \s*$/x
2132             => sub { die "ELSE out of scope" if ! @skip;
2133                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
2134                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
2135             qr/^\s* ENDIF \s*$/x
2136             => sub { die "ENDIF out of scope" if ! @skip;
2137                      pop @skip; },
2138             qr/^\s* ${variable_re} \s* = \s* ${value_re} \s* $/x
2139             => sub {
2140                 if (!@skip || $skip[$#skip] > 0) {
2141                     $variables{$+{VARIABLE}} = $expand_variables->($+{VALUE});
2142                 }
2143             },
2144             qr/^\s* SUBDIRS \s* = \s* ${value_re} \s* $/x
2145             => sub {
2146                 if (!@skip || $skip[$#skip] > 0) {
2147                     foreach (tokenize($expand_variables->($+{VALUE}))) {
2148                         push @build_dirs, [ @curd, splitdir($_, 1) ];
2149                     }
2150                 }
2151             },
2152             qr/^\s* PROGRAMS ${attribs_re} \s* =  \s* ${value_re} \s* $/x
2153             => sub { $push_to->(\@programs, undef,
2154                                 \$attributes{programs}, $+{ATTRIBS},
2155                                 tokenize($expand_variables->($+{VALUE})))
2156                          if !@skip || $skip[$#skip] > 0; },
2157             qr/^\s* LIBS ${attribs_re} \s* =  \s* ${value_re} \s* $/x
2158             => sub { $push_to->(\@libraries, undef,
2159                                 \$attributes{libraries}, $+{ATTRIBS},
2160                                 tokenize($expand_variables->($+{VALUE})))
2161                          if !@skip || $skip[$#skip] > 0; },
2162             qr/^\s* MODULES ${attribs_re} \s* =  \s* ${value_re} \s* $/x
2163             => sub { $push_to->(\@modules, undef,
2164                                 \$attributes{modules}, $+{ATTRIBS},
2165                                 tokenize($expand_variables->($+{VALUE})))
2166                          if !@skip || $skip[$#skip] > 0; },
2167             qr/^\s* SCRIPTS ${attribs_re} \s* = \s* ${value_re} \s* $/x
2168             => sub { $push_to->(\@scripts, undef,
2169                                 \$attributes{scripts}, $+{ATTRIBS},
2170                                 tokenize($expand_variables->($+{VALUE})))
2171                          if !@skip || $skip[$#skip] > 0; },
2172             qr/^\s* IMAGEDOCS ${index_re} \s* = \s* ${value_re} \s* $/x
2173             => sub { $push_to->(\%imagedocs, $expand_variables->($+{INDEX}),
2174                                 undef, undef,
2175                                 tokenize($expand_variables->($+{VALUE})))
2176                          if !@skip || $skip[$#skip] > 0; },
2177             qr/^\s* HTMLDOCS ${index_re} \s* = \s* ${value_re} \s* $/x
2178             => sub { $push_to->(\%htmldocs, $expand_variables->($+{INDEX}),
2179                                 undef, undef,
2180                                 tokenize($expand_variables->($+{VALUE})))
2181                          if !@skip || $skip[$#skip] > 0; },
2182             qr/^\s* MANDOCS ${index_re} \s* = \s* ${value_re} \s* $/x
2183             => sub { $push_to->(\%mandocs, $expand_variables->($+{INDEX}),
2184                                 undef, undef,
2185                                 tokenize($expand_variables->($+{VALUE})))
2186                          if !@skip || $skip[$#skip] > 0; },
2187             qr/^\s* SOURCE ${index_re} ${attribs_re} \s* = \s* ${value_re} \s* $/x
2188             => sub { $push_to->(\%sources, $expand_variables->($+{INDEX}),
2189                                 \$attributes{sources}, $+{ATTRIBS},
2190                                 tokenize($expand_variables->($+{VALUE})))
2191                          if !@skip || $skip[$#skip] > 0; },
2192             qr/^\s* SHARED_SOURCE ${index_re} ${attribs_re} \s* = \s* ${value_re} \s* $/x
2193             => sub { $push_to->(\%shared_sources, $expand_variables->($+{INDEX}),
2194                                 \$attributes{sources}, $+{ATTRIBS},
2195                                 tokenize($expand_variables->($+{VALUE})))
2196                          if !@skip || $skip[$#skip] > 0; },
2197             qr/^\s* INCLUDE ${index_re} \s* = \s* ${value_re} \s* $/x
2198             => sub { $push_to->(\%includes, $expand_variables->($+{INDEX}),
2199                                 undef, undef,
2200                                 tokenize($expand_variables->($+{VALUE})))
2201                          if !@skip || $skip[$#skip] > 0; },
2202             qr/^\s* DEFINE ${index_re} \s* = \s* ${value_re} \s* $/x
2203             => sub { $push_to->(\%defines, $expand_variables->($+{INDEX}),
2204                                 undef, undef,
2205                                 tokenize($expand_variables->($+{VALUE})))
2206                          if !@skip || $skip[$#skip] > 0; },
2207             qr/^\s* DEPEND ${index_re} ${attribs_re} \s* = \s* ${value_re} \s* $/x
2208             => sub { $push_to->(\%depends, $expand_variables->($+{INDEX}),
2209                                 \$attributes{depends}, $+{ATTRIBS},
2210                                 tokenize($expand_variables->($+{VALUE})))
2211                          if !@skip || $skip[$#skip] > 0; },
2212             qr/^\s* GENERATE ${index_re} \s* = \s* ${value_re} \s* $/x
2213             => sub { $push_to->(\%generate, $expand_variables->($+{INDEX}),
2214                                 undef, undef, $expand_variables->($+{VALUE}))
2215                          if !@skip || $skip[$#skip] > 0; },
2216             qr/^\s* (?:\#.*)? $/x => sub { },
2217             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
2218             "BEFORE" => sub {
2219                 if ($buildinfo_debug) {
2220                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
2221                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
2222                 }
2223             },
2224             "AFTER" => sub {
2225                 if ($buildinfo_debug) {
2226                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
2227                 }
2228             },
2229             );
2230         die "runaway IF?" if (@skip);
2231
2232         if (grep { defined $attributes{modules}->{$_}->{engine} } keys %attributes
2233                 and !$config{dynamic_engines}) {
2234             die <<"EOF"
2235 ENGINES can only be used if configured with 'dynamic-engine'.
2236 This is usually a fault in a build.info file.
2237 EOF
2238         }
2239
2240         {
2241             my %infos = ( programs  => [ @programs  ],
2242                           libraries => [ @libraries ],
2243                           modules   => [ @modules   ],
2244                           scripts   => [ @scripts   ] );
2245             foreach my $k (keys %infos) {
2246                 foreach (@{$infos{$k}}) {
2247                     my $item = cleanfile($buildd, $_, $blddir);
2248                     $unified_info{$k}->{$item} = 1;
2249
2250                     # Fix up associated attributes
2251                     $unified_info{attributes}->{$k}->{$item} =
2252                         $attributes{$k}->{$_}
2253                         if defined $attributes{$k}->{$_};
2254                 }
2255             }
2256         }
2257
2258         # Check that we haven't defined any library as both shared and
2259         # explicitly static.  That is forbidden.
2260         my @doubles = ();
2261         foreach (grep /\.a$/, keys %{$unified_info{libraries}}) {
2262             (my $l = $_) =~ s/\.a$//;
2263             push @doubles, $l if defined $unified_info{libraries}->{$l};
2264         }
2265         die "these libraries are both explicitly static and shared:\n  ",
2266             join(" ", @doubles), "\n"
2267             if @doubles;
2268
2269         foreach (keys %sources) {
2270             my $dest = $_;
2271             my $ddest = cleanfile($buildd, $_, $blddir);
2272             foreach (@{$sources{$dest}}) {
2273                 my $s = cleanfile($sourced, $_, $blddir);
2274
2275                 # If it's generated or we simply don't find it in the source
2276                 # tree, we assume it's in the build tree.
2277                 if ($s eq $src_configdata || $generate{$_} || ! -f $s) {
2278                     $s = cleanfile($buildd, $_, $blddir);
2279                 }
2280                 my $o = $_;
2281                 # We recognise C++, C and asm files
2282                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2283                     push @{$check_exist{$s}}, $ddest;
2284                     $o =~ s/\.[csS]$/.o/; # C and assembler
2285                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2286                     $o = cleanfile($buildd, $o, $blddir);
2287                     $unified_info{sources}->{$ddest}->{$o} = -1;
2288                     $unified_info{sources}->{$o}->{$s} = -1;
2289                 } elsif ($s =~ /\.rc$/) {
2290                     # We also recognise resource files
2291                     push @{$check_exist{$s}}, $ddest;
2292                     $o =~ s/\.rc$/.res/; # Resource configuration
2293                     $o = cleanfile($buildd, $o, $blddir);
2294                     $unified_info{sources}->{$ddest}->{$o} = -1;
2295                     $unified_info{sources}->{$o}->{$s} = -1;
2296                 } else {
2297                     push @{$check_exist{$s}}, $ddest;
2298                     $unified_info{sources}->{$ddest}->{$s} = 1;
2299                 }
2300                 # Fix up associated attributes
2301                 if ($o ne $_) {
2302                     $unified_info{attributes}->{sources}->{$ddest}->{$o} =
2303                         $unified_info{attributes}->{sources}->{$o}->{$s} =
2304                         $attributes{sources}->{$dest}->{$_}
2305                         if defined $attributes{sources}->{$dest}->{$_};
2306                 } else {
2307                     $unified_info{attributes}->{sources}->{$ddest}->{$s} =
2308                         $attributes{sources}->{$dest}->{$_}
2309                         if defined $attributes{sources}->{$dest}->{$_};
2310                 }
2311             }
2312         }
2313
2314         foreach (keys %shared_sources) {
2315             my $dest = $_;
2316             my $ddest = cleanfile($buildd, $_, $blddir);
2317             foreach (@{$shared_sources{$dest}}) {
2318                 my $s = cleanfile($sourced, $_, $blddir);
2319
2320                 # If it's generated or we simply don't find it in the source
2321                 # tree, we assume it's in the build tree.
2322                 if ($s eq $src_configdata || $generate{$_} || ! -f $s) {
2323                     $s = cleanfile($buildd, $_, $blddir);
2324                 }
2325
2326                 my $o = $_;
2327                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2328                     # We recognise C++, C and asm files
2329                     push @{$check_exist{$s}}, $ddest;
2330                     $o =~ s/\.[csS]$/.o/; # C and assembler
2331                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2332                     $o = cleanfile($buildd, $o, $blddir);
2333                     $unified_info{shared_sources}->{$ddest}->{$o} = -1;
2334                     $unified_info{sources}->{$o}->{$s} = -1;
2335                 } elsif ($s =~ /\.rc$/) {
2336                     # We also recognise resource files
2337                     push @{$check_exist{$s}}, $ddest;
2338                     $o =~ s/\.rc$/.res/; # Resource configuration
2339                     $o = cleanfile($buildd, $o, $blddir);
2340                     $unified_info{shared_sources}->{$ddest}->{$o} = -1;
2341                     $unified_info{sources}->{$o}->{$s} = -1;
2342                 } elsif ($s =~ /\.ld$/) {
2343                     # We also recognise linker scripts (or corresponding)
2344                     # We know they are generated files
2345                     push @{$check_exist{$s}}, $ddest;
2346                     $o = cleanfile($buildd, $_, $blddir);
2347                     $unified_info{shared_sources}->{$ddest}->{$o} = 1;
2348                 } else {
2349                     die "unrecognised source file type for shared library: $s\n";
2350                 }
2351                 # Fix up associated attributes
2352                 if ($o ne $_) {
2353                     $unified_info{attributes}->{shared_sources}->{$ddest}->{$o} =
2354                         $unified_info{attributes}->{sources}->{$o}->{$s} =
2355                         $attributes{sources}->{$dest}->{$_}
2356                         if defined $attributes{sources}->{$dest}->{$_};
2357                 } else {
2358                     $unified_info{attributes}->{shared_sources}->{$ddest}->{$o} =
2359                         $attributes{sources}->{$dest}->{$_}
2360                         if defined $attributes{sources}->{$dest}->{$_};
2361                 }
2362             }
2363         }
2364
2365         foreach (keys %generate) {
2366             my $dest = $_;
2367             my $ddest = cleanfile($buildd, $_, $blddir);
2368             die "more than one generator for $dest: "
2369                 ,join(" ", @{$generate{$_}}),"\n"
2370                 if scalar @{$generate{$_}} > 1;
2371             my @generator = split /\s+/, $generate{$dest}->[0];
2372             my $gen = $generator[0];
2373             $generator[0] = cleanfile($sourced, $gen, $blddir);
2374
2375             # If the generator is itself generated, it's in the build tree
2376             if ($generate{$gen} || ! -f $generator[0]) {
2377                 $generator[0] = cleanfile($buildd, $gen, $blddir);
2378             }
2379             $check_generate{$ddest}->{$generator[0]}++;
2380
2381             $unified_info{generate}->{$ddest} = [ @generator ];
2382         }
2383
2384         foreach (keys %depends) {
2385             my $dest = $_;
2386             my $ddest = $dest;
2387
2388             if ($dest =~ /^\|(.*)\|$/) {
2389                 # Collect the raw target
2390                 $unified_info{targets}->{$1} = 1;
2391                 $ddest = $1;
2392             } elsif ($dest eq '') {
2393                 $ddest = '';
2394             } else {
2395                 $ddest = cleanfile($sourced, $_, $blddir);
2396
2397                 # If the destination doesn't exist in source, it can only be
2398                 # a generated file in the build tree.
2399                 if ($ddest eq $src_configdata || ! -f $ddest) {
2400                     $ddest = cleanfile($buildd, $_, $blddir);
2401                 }
2402             }
2403             foreach (@{$depends{$dest}}) {
2404                 my $d = cleanfile($sourced, $_, $blddir);
2405                 my $d2 = cleanfile($buildd, $_, $blddir);
2406
2407                 # If we know it's generated, or assume it is because we can't
2408                 # find it in the source tree, we set file we depend on to be
2409                 # in the build tree rather than the source tree.
2410                 if ($d eq $src_configdata
2411                     || (grep { $d2 eq $_ }
2412                         keys %{$unified_info{generate}})
2413                     || ! -f $d) {
2414                     $d = $d2;
2415                 }
2416                 $unified_info{depends}->{$ddest}->{$d} = 1;
2417
2418                 # Fix up associated attributes
2419                 $unified_info{attributes}->{depends}->{$ddest}->{$d} =
2420                     $attributes{depends}->{$dest}->{$_}
2421                     if defined $attributes{depends}->{$dest}->{$_};
2422             }
2423         }
2424
2425         foreach (keys %includes) {
2426             my $dest = $_;
2427             my $ddest = cleanfile($sourced, $_, $blddir);
2428
2429             # If the destination doesn't exist in source, it can only be
2430             # a generated file in the build tree.
2431             if ($ddest eq $src_configdata || ! -f $ddest) {
2432                 $ddest = cleanfile($buildd, $_, $blddir);
2433             }
2434             foreach (@{$includes{$dest}}) {
2435                 my $is = cleandir($sourced, $_, $blddir);
2436                 my $ib = cleandir($buildd, $_, $blddir);
2437                 push @{$unified_info{includes}->{$ddest}->{source}}, $is
2438                     unless grep { $_ eq $is } @{$unified_info{includes}->{$ddest}->{source}};
2439                 push @{$unified_info{includes}->{$ddest}->{build}}, $ib
2440                     unless grep { $_ eq $ib } @{$unified_info{includes}->{$ddest}->{build}};
2441             }
2442         }
2443
2444         foreach my $dest (keys %defines) {
2445             my $ddest;
2446
2447             if ($dest ne "") {
2448                 $ddest = cleanfile($sourced, $dest, $blddir);
2449
2450                 # If the destination doesn't exist in source, it can only
2451                 # be a generated file in the build tree.
2452                 if (! -f $ddest) {
2453                     $ddest = cleanfile($buildd, $dest, $blddir);
2454                 }
2455             }
2456             foreach my $v (@{$defines{$dest}}) {
2457                 $v =~ m|^([^=]*)(=.*)?$|;
2458                 die "0 length macro name not permitted\n" if $1 eq "";
2459                 if ($dest ne "") {
2460                     die "$1 defined more than once\n"
2461                         if defined $unified_info{defines}->{$ddest}->{$1};
2462                     $unified_info{defines}->{$ddest}->{$1} = $2;
2463                 } else {
2464                     die "$1 defined more than once\n"
2465                         if grep { $v eq $_ } @{$config{defines}};
2466                     push @{$config{defines}}, $v;
2467                 }
2468             }
2469         }
2470
2471         foreach my $section (keys %imagedocs) {
2472             foreach (@{$imagedocs{$section}}) {
2473                 my $imagedocs = cleanfile($buildd, $_, $blddir);
2474                 $unified_info{imagedocs}->{$section}->{$imagedocs} = 1;
2475             }
2476         }
2477
2478         foreach my $section (keys %htmldocs) {
2479             foreach (@{$htmldocs{$section}}) {
2480                 my $htmldocs = cleanfile($buildd, $_, $blddir);
2481                 $unified_info{htmldocs}->{$section}->{$htmldocs} = 1;
2482             }
2483         }
2484
2485         foreach my $section (keys %mandocs) {
2486             foreach (@{$mandocs{$section}}) {
2487                 my $mandocs = cleanfile($buildd, $_, $blddir);
2488                 $unified_info{mandocs}->{$section}->{$mandocs} = 1;
2489             }
2490         }
2491     }
2492
2493     my $ordinals_text = join(', ', sort keys %ordinals);
2494     warn <<"EOF" if $ordinals_text;
2495
2496 WARNING: ORDINALS were specified for $ordinals_text
2497 They are ignored and should be replaced with a combination of GENERATE,
2498 DEPEND and SHARED_SOURCE.
2499 EOF
2500
2501     # Check that each generated file is only generated once
2502     my $ambiguous_generation = 0;
2503     foreach (sort keys %check_generate) {
2504         my @generators = sort keys %{$check_generate{$_}};
2505         my $generators_txt = join(', ', @generators);
2506         if (scalar @generators > 1) {
2507             warn "$_ is GENERATEd by more than one generator ($generators_txt)\n";
2508             $ambiguous_generation++;
2509         }
2510         if ($check_generate{$_}->{$generators[0]} > 1) {
2511             warn "INFO: $_ has more than one GENERATE declaration (same generator)\n"
2512         }
2513     }
2514     die "There are ambiguous source file generations\n"
2515         if $ambiguous_generation > 0;
2516
2517     # All given source files should exist, or if generated, their
2518     # generator should exist.  This loop ensures this is true.
2519     my $missing = 0;
2520     foreach my $orig (sort keys %check_exist) {
2521         foreach my $dest (@{$check_exist{$orig}}) {
2522             if ($orig ne $src_configdata) {
2523                 if ($orig =~ /\.a$/) {
2524                     # Static library names may be used as sources, so we
2525                     # need to detect those and give them special treatment.
2526                     unless (grep { $_ eq $orig }
2527                             keys %{$unified_info{libraries}}) {
2528                         warn "$orig is given as source for $dest, but no such library is built\n";
2529                         $missing++;
2530                     }
2531                 } else {
2532                     # A source may be generated, and its generator may be
2533                     # generated as well.  We therefore loop to dig out the
2534                     # first generator.
2535                     my $gen = $orig;
2536
2537                     while (my @next = keys %{$check_generate{$gen}}) {
2538                         $gen = $next[0];
2539                     }
2540
2541                     if (! -f $gen) {
2542                         if ($gen ne $orig) {
2543                             $missing++;
2544                             warn "$orig is given as source for $dest, but its generator (leading to $gen) is missing\n";
2545                         } else {
2546                             $missing++;
2547                             warn "$orig is given as source for $dest, but is missing\n";
2548                         }
2549                     }
2550                 }
2551             }
2552         }
2553     }
2554     die "There are files missing\n" if $missing > 0;
2555
2556     # Go through the sources of all libraries and check that the same basename
2557     # doesn't appear more than once.  Some static library archivers depend on
2558     # them being unique.
2559     {
2560         my $err = 0;
2561         foreach my $prod (keys %{$unified_info{libraries}}) {
2562             my @prod_sources =
2563                 map { keys %{$unified_info{sources}->{$_}} }
2564                 keys %{$unified_info{sources}->{$prod}};
2565             my %srccnt = ();
2566
2567             # Count how many times a given each source basename
2568             # appears for each product.
2569             foreach my $src (@prod_sources) {
2570                 $srccnt{basename $src}++;
2571             }
2572
2573             foreach my $src (keys %srccnt) {
2574                 if ((my $cnt = $srccnt{$src}) > 1) {
2575                     print STDERR "$src appears $cnt times for the product $prod\n";
2576                     $err++
2577                 }
2578             }
2579         }
2580         die if $err > 0;
2581     }
2582
2583     # Massage the result
2584
2585     # If we depend on a header file or a perl module, add an inclusion of
2586     # its directory to allow smoothe inclusion
2587     foreach my $dest (keys %{$unified_info{depends}}) {
2588         next if $dest eq "";
2589         foreach my $d (keys %{$unified_info{depends}->{$dest}}) {
2590             next unless $d =~ /\.(h|pm)$/;
2591             my $i = dirname($d);
2592             my $spot =
2593                 $d eq "configdata.pm" || defined($unified_info{generate}->{$d})
2594                 ? 'build' : 'source';
2595             push @{$unified_info{includes}->{$dest}->{$spot}}, $i
2596                 unless grep { $_ eq $i } @{$unified_info{includes}->{$dest}->{$spot}};
2597         }
2598     }
2599
2600     # Go through all intermediary files and change their names to something that
2601     # reflects what they will be built for.  Note that for some source files,
2602     # this leads to duplicate object files because they are used multiple times.
2603     # the goal is to rename all object files according to this scheme:
2604     #    {productname}-{midfix}-{origobjname}.[o|res]
2605     # the {midfix} is a keyword indicating the type of product, which is mostly
2606     # valuable for libraries since they come in two forms.
2607     #
2608     # This also reorganises the {sources} and {shared_sources} so that the
2609     # former only contains ALL object files that are supposed to end up in
2610     # static libraries and programs, while the latter contains ALL object files
2611     # that are supposed to end up in shared libraries and DSOs.
2612     # The main reason for having two different source structures is to allow
2613     # the same name to be used for the static and the shared variants of a
2614     # library.
2615     {
2616         # Take copies so we don't get interference from added stuff
2617         my %unified_copy = ();
2618         foreach (('sources', 'shared_sources')) {
2619             $unified_copy{$_} = { %{$unified_info{$_}} }
2620                 if defined($unified_info{$_});
2621             delete $unified_info{$_};
2622         }
2623         foreach my $prodtype (('programs', 'libraries', 'modules', 'scripts')) {
2624             # $intent serves multi purposes:
2625             # - give a prefix for the new object files names
2626             # - in the case of libraries, rearrange the object files so static
2627             #   libraries use the 'sources' structure exclusively, while shared
2628             #   libraries use the 'shared_sources' structure exclusively.
2629             my $intent = {
2630                 programs  => { bin    => { src => [ 'sources' ],
2631                                            dst => 'sources' } },
2632                 libraries => { lib    => { src => [ 'sources' ],
2633                                            dst => 'sources' },
2634                                shlib  => { prodselect =>
2635                                                sub { grep !/\.a$/, @_ },
2636                                            src => [ 'sources',
2637                                                     'shared_sources' ],
2638                                            dst => 'shared_sources' } },
2639                 modules   => { dso    => { src => [ 'sources' ],
2640                                            dst => 'sources' } },
2641                 scripts   => { script => { src => [ 'sources' ],
2642                                            dst => 'sources' } }
2643                } -> {$prodtype};
2644             foreach my $kind (keys %$intent) {
2645                 next if ($intent->{$kind}->{dst} eq 'shared_sources'
2646                              && $disabled{shared});
2647
2648                 my @src = @{$intent->{$kind}->{src}};
2649                 my $dst = $intent->{$kind}->{dst};
2650                 my $prodselect = $intent->{$kind}->{prodselect} // sub { @_ };
2651                 foreach my $prod ($prodselect->(keys %{$unified_info{$prodtype}})) {
2652                     # %prod_sources has all applicable objects as keys, and
2653                     # their corresponding sources as values
2654                     my %prod_sources =
2655                         map { $_ => [ keys %{$unified_copy{sources}->{$_}} ] }
2656                         map { keys %{$unified_copy{$_}->{$prod}} }
2657                         @src;
2658                     foreach (keys %prod_sources) {
2659                         # Only affect object files and resource files,
2660                         # the others simply get a new value
2661                         # (+1 instead of -1)
2662                         if ($_ =~ /\.(o|res)$/) {
2663                             (my $prodname = $prod) =~ s|\.a$||;
2664                             my $newobj =
2665                                 catfile(dirname($_),
2666                                         basename($prodname)
2667                                             . '-' . $kind
2668                                             . '-' . basename($_));
2669                             $unified_info{$dst}->{$prod}->{$newobj} = 1;
2670                             foreach my $src (@{$prod_sources{$_}}) {
2671                                 $unified_info{sources}->{$newobj}->{$src} = 1;
2672                                 # Adjust source attributes
2673                                 my $attrs = $unified_info{attributes}->{sources};
2674                                 if (defined $attrs->{$prod}
2675                                     && defined $attrs->{$prod}->{$_}) {
2676                                     $attrs->{$prod}->{$newobj} =
2677                                         $attrs->{$prod}->{$_};
2678                                     delete $attrs->{$prod}->{$_};
2679                                 }
2680                                 foreach my $objsrc (keys %{$attrs->{$_} // {}}) {
2681                                     $attrs->{$newobj}->{$objsrc} =
2682                                         $attrs->{$_}->{$objsrc};
2683                                     delete $attrs->{$_}->{$objsrc};
2684                                 }
2685                             }
2686                             # Adjust dependencies
2687                             foreach my $deps (keys %{$unified_info{depends}->{$_}}) {
2688                                 $unified_info{depends}->{$_}->{$deps} = -1;
2689                                 $unified_info{depends}->{$newobj}->{$deps} = 1;
2690                             }
2691                             # Adjust includes
2692                             foreach my $k (('source', 'build')) {
2693                                 next unless
2694                                     defined($unified_info{includes}->{$_}->{$k});
2695                                 my @incs = @{$unified_info{includes}->{$_}->{$k}};
2696                                 $unified_info{includes}->{$newobj}->{$k} = [ @incs ];
2697                             }
2698                         } else {
2699                             $unified_info{$dst}->{$prod}->{$_} = 1;
2700                         }
2701                     }
2702                 }
2703             }
2704         }
2705     }
2706
2707     # At this point, we have a number of sources with the value -1.  They
2708     # aren't part of the local build and are probably meant for a different
2709     # platform, and can therefore be cleaned away.  That happens when making
2710     # %unified_info more efficient below.
2711
2712     ### Make unified_info a bit more efficient
2713     # One level structures
2714     foreach (("programs", "libraries", "modules", "scripts", "targets")) {
2715         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
2716     }
2717     # Two level structures
2718     foreach my $l1 (("sources", "shared_sources", "ldadd", "depends",
2719                      "imagedocs", "htmldocs", "mandocs")) {
2720         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
2721             my @items =
2722                 sort
2723                 grep { $unified_info{$l1}->{$l2}->{$_} > 0 }
2724                 keys %{$unified_info{$l1}->{$l2}};
2725             if (@items) {
2726                 $unified_info{$l1}->{$l2} = [ @items ];
2727             } else {
2728                 delete $unified_info{$l1}->{$l2};
2729             }
2730         }
2731     }
2732     # Defines
2733     foreach my $dest (sort keys %{$unified_info{defines}}) {
2734         $unified_info{defines}->{$dest}
2735             = [ map { $_.$unified_info{defines}->{$dest}->{$_} }
2736                 sort keys %{$unified_info{defines}->{$dest}} ];
2737     }
2738     # Includes
2739     foreach my $dest (sort keys %{$unified_info{includes}}) {
2740         if (defined($unified_info{includes}->{$dest}->{build})) {
2741             my @source_includes = ();
2742             @source_includes = ( @{$unified_info{includes}->{$dest}->{source}} )
2743                 if defined($unified_info{includes}->{$dest}->{source});
2744             $unified_info{includes}->{$dest} =
2745                 [ @{$unified_info{includes}->{$dest}->{build}} ];
2746             foreach my $inc (@source_includes) {
2747                 push @{$unified_info{includes}->{$dest}}, $inc
2748                     unless grep { $_ eq $inc } @{$unified_info{includes}->{$dest}};
2749             }
2750         } elsif (defined($unified_info{includes}->{$dest}->{source})) {
2751             $unified_info{includes}->{$dest} =
2752                 [ @{$unified_info{includes}->{$dest}->{source}} ];
2753         } else {
2754             delete $unified_info{includes}->{$dest};
2755         }
2756     }
2757
2758     # For convenience collect information regarding directories where
2759     # files are generated, those generated files and the end product
2760     # they end up in where applicable.  Then, add build rules for those
2761     # directories
2762     my %loopinfo = ( "lib" => [ @{$unified_info{libraries}} ],
2763                      "dso" => [ @{$unified_info{modules}} ],
2764                      "bin" => [ @{$unified_info{programs}} ],
2765                      "script" => [ @{$unified_info{scripts}} ],
2766                      "docs" => [ (map { @{$unified_info{imagedocs}->{$_} // []} }
2767                                   keys %{$unified_info{imagedocs} // {}}),
2768                                  (map { @{$unified_info{htmldocs}->{$_} // []} }
2769                                   keys %{$unified_info{htmldocs} // {}}),
2770                                  (map { @{$unified_info{mandocs}->{$_} // []} }
2771                                   keys %{$unified_info{mandocs} // {}}) ] );
2772     foreach my $type (keys %loopinfo) {
2773         foreach my $product (@{$loopinfo{$type}}) {
2774             my %dirs = ();
2775             my $pd = dirname($product);
2776
2777             foreach (@{$unified_info{sources}->{$product} // []},
2778                      @{$unified_info{shared_sources}->{$product} // []}) {
2779                 my $d = dirname($_);
2780
2781                 # We don't want to create targets for source directories
2782                 # when building out of source
2783                 next if ($config{sourcedir} ne $config{builddir}
2784                              && $d =~ m|^\Q$config{sourcedir}\E|);
2785                 # We already have a "test" target, and the current directory
2786                 # is just silly to make a target for
2787                 next if $d eq "test" || $d eq ".";
2788
2789                 $dirs{$d} = 1;
2790                 push @{$unified_info{dirinfo}->{$d}->{deps}}, $_
2791                     if $d ne $pd;
2792             }
2793             foreach (keys %dirs) {
2794                 push @{$unified_info{dirinfo}->{$_}->{products}->{$type}},
2795                     $product;
2796             }
2797         }
2798     }
2799 }
2800
2801 # For the schemes that need it, we provide the old *_obj configs
2802 # from the *_asm_obj ones
2803 foreach (grep /_(asm|aux)_src$/, keys %target) {
2804     my $src = $_;
2805     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
2806     $target{$obj} = $target{$src};
2807     $target{$obj} =~ s/\.[csS]\b/.o/g; # C and assembler
2808     $target{$obj} =~ s/\.(cc|cpp)\b/_cc.o/g; # C++
2809 }
2810
2811 # Write down our configuration where it fits #########################
2812
2813 my %template_vars = (
2814     config => \%config,
2815     target => \%target,
2816     disablables => \@disablables,
2817     disablables_int => \@disablables_int,
2818     disabled => \%disabled,
2819     withargs => \%withargs,
2820     unified_info => \%unified_info,
2821     tls => \@tls,
2822     dtls => \@dtls,
2823     makevars => [ sort keys %user ],
2824     disabled_info => \%disabled_info,
2825     user_crossable => \@user_crossable,
2826 );
2827 my $configdata_outname = 'configdata.pm';
2828 print "Creating $configdata_outname\n";
2829 open CONFIGDATA, ">$configdata_outname.new"
2830     or die "Trying to create $configdata_outname.new: $!";
2831 my $configdata_tmplname = cleanfile($srcdir, "configdata.pm.in", $blddir);
2832 my $configdata_tmpl =
2833     OpenSSL::Template->new(TYPE => 'FILE', SOURCE => $configdata_tmplname);
2834 $configdata_tmpl->fill_in(
2835     FILENAME => $configdata_tmplname,
2836     OUTPUT => \*CONFIGDATA,
2837     HASH => { %template_vars,
2838               autowarntext => [
2839                   'WARNING: do not edit!',
2840                   "Generated by Configure from $configdata_tmplname",
2841               ] }
2842 ) or die $Text::Template::ERROR;
2843 close CONFIGDATA;
2844 rename "$configdata_outname.new", $configdata_outname;
2845 if ($builder_platform eq 'unix') {
2846     my $mode = (0755 & ~umask);
2847     chmod $mode, 'configdata.pm'
2848         or warn sprintf("WARNING: Couldn't change mode for 'configdata.pm' to 0%03o: %s\n",$mode,$!);
2849 }
2850
2851 print "Running $configdata_outname\n";
2852 my $perlcmd = (quotify("maybeshell", $config{PERL}))[0];
2853 my $cmd = "$perlcmd $configdata_outname";
2854 #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
2855 system($cmd);
2856 exit 1 if $? != 0;
2857
2858 $SIG{__DIE__} = $orig_death_handler;
2859
2860 print <<"EOF" if ($disabled{threads} eq "unavailable");
2861
2862 The library could not be configured for supporting multi-threaded
2863 applications as the compiler options required on this system are not known.
2864 See file INSTALL.md for details if you need multi-threading.
2865 EOF
2866
2867 print <<"EOF" if ($no_shared_warn);
2868
2869 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
2870 platform, so we will pretend you gave the option 'no-pic', which also disables
2871 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
2872 or position independent code, please let us know (but please first make sure
2873 you have tried with a current version of OpenSSL).
2874 EOF
2875
2876 print $banner;
2877
2878 exit(0);
2879
2880 ######################################################################
2881 #
2882 # Helpers and utility functions
2883 #
2884
2885 # Death handler, to print a helpful message in case of failure #######
2886 #
2887 sub death_handler {
2888     die @_ if $^S;              # To prevent the added message in eval blocks
2889     my $build_file = $target{build_file} // "build file";
2890     my @message = ( <<"_____", @_ );
2891
2892 Failure!  $build_file wasn't produced.
2893 Please read INSTALL.md and associated NOTES-* files.  You may also have to
2894 look over your available compiler tool chain or change your configuration.
2895
2896 _____
2897
2898     # Dying is terminal, so it's ok to reset the signal handler here.
2899     $SIG{__DIE__} = $orig_death_handler;
2900     die @message;
2901 }
2902
2903 # Configuration file reading #########################################
2904
2905 # Note: All of the helper functions are for lazy evaluation.  They all
2906 # return a CODE ref, which will return the intended value when evaluated.
2907 # Thus, whenever there's mention of a returned value, it's about that
2908 # intended value.
2909
2910 # Helper function to implement conditional value variants, with a default
2911 # plus additional values based on the value of $config{build_type}.
2912 # Arguments are given in hash table form:
2913 #
2914 #       picker(default => "Basic string: ",
2915 #              debug   => "debug",
2916 #              release => "release")
2917 #
2918 # When configuring with --debug, the resulting string will be
2919 # "Basic string: debug", and when not, it will be "Basic string: release"
2920 #
2921 # This can be used to create variants of sets of flags according to the
2922 # build type:
2923 #
2924 #       cflags => picker(default => "-Wall",
2925 #                        debug   => "-g -O0",
2926 #                        release => "-O3")
2927 #
2928 sub picker {
2929     my %opts = @_;
2930     return sub { add($opts{default} || (),
2931                      $opts{$config{build_type}} || ())->(); }
2932 }
2933
2934 # Helper function to combine several values of different types into one.
2935 # This is useful if you want to combine a string with the result of a
2936 # lazy function, such as:
2937 #
2938 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
2939 #
2940 sub combine {
2941     my @stuff = @_;
2942     return sub { add(@stuff)->(); }
2943 }
2944
2945 # Helper function to implement conditional values depending on the value
2946 # of $disabled{threads}.  Can be used as follows:
2947 #
2948 #       cflags => combine("-Wall", threads("-pthread"))
2949 #
2950 sub threads {
2951     my @flags = @_;
2952     return sub { add($disabled{threads} ? () : @flags)->(); }
2953 }
2954
2955 sub shared {
2956     my @flags = @_;
2957     return sub { add($disabled{shared} ? () : @flags)->(); }
2958 }
2959
2960 our $add_called = 0;
2961 # Helper function to implement adding values to already existing configuration
2962 # values.  It handles elements that are ARRAYs, CODEs and scalars
2963 sub _add {
2964     my $separator = shift;
2965
2966     # If there's any ARRAY in the collection of values OR the separator
2967     # is undef, we will return an ARRAY of combined values, otherwise a
2968     # string of joined values with $separator as the separator.
2969     my $found_array = !defined($separator);
2970
2971     my @values =
2972         map {
2973             my $res = $_;
2974             while (ref($res) eq "CODE") {
2975                 $res = $res->();
2976             }
2977             if (defined($res)) {
2978                 if (ref($res) eq "ARRAY") {
2979                     $found_array = 1;
2980                     @$res;
2981                 } else {
2982                     $res;
2983                 }
2984             } else {
2985                 ();
2986             }
2987     } (@_);
2988
2989     $add_called = 1;
2990
2991     if ($found_array) {
2992         [ @values ];
2993     } else {
2994         join($separator, grep { defined($_) && $_ ne "" } @values);
2995     }
2996 }
2997 sub add_before {
2998     my $separator = " ";
2999     if (ref($_[$#_]) eq "HASH") {
3000         my $opts = pop;
3001         $separator = $opts->{separator};
3002     }
3003     my @x = @_;
3004     sub { _add($separator, @x, @_) };
3005 }
3006 sub add {
3007     my $separator = " ";
3008     if (ref($_[$#_]) eq "HASH") {
3009         my $opts = pop;
3010         $separator = $opts->{separator};
3011     }
3012     my @x = @_;
3013     sub { _add($separator, @_, @x) };
3014 }
3015
3016 sub read_eval_file {
3017     my $fname = shift;
3018     my $content;
3019     my @result;
3020
3021     open F, "< $fname" or die "Can't open '$fname': $!\n";
3022     {
3023         undef local $/;
3024         $content = <F>;
3025     }
3026     close F;
3027     {
3028         local $@;
3029
3030         @result = ( eval $content );
3031         warn $@ if $@;
3032     }
3033     return wantarray ? @result : $result[0];
3034 }
3035
3036 # configuration reader, evaluates the input file as a perl script and expects
3037 # it to fill %targets with target configurations.  Those are then added to
3038 # %table.
3039 sub read_config {
3040     my $fname = shift;
3041     my %targets;
3042
3043     {
3044         # Protect certain tables from tampering
3045         local %table = ();
3046
3047         %targets = read_eval_file($fname);
3048     }
3049     my %preexisting = ();
3050     foreach (sort keys %targets) {
3051         $preexisting{$_} = 1 if $table{$_};
3052     }
3053     die <<"EOF",
3054 The following config targets from $fname
3055 shadow pre-existing config targets with the same name:
3056 EOF
3057         map { "  $_\n" } sort keys %preexisting
3058         if %preexisting;
3059
3060
3061     # For each target, check that it's configured with a hash table.
3062     foreach (keys %targets) {
3063         if (ref($targets{$_}) ne "HASH") {
3064             if (ref($targets{$_}) eq "") {
3065                 warn "Deprecated target configuration for $_, ignoring...\n";
3066             } else {
3067                 warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
3068             }
3069             delete $targets{$_};
3070         } else {
3071             $targets{$_}->{_conf_fname_int} = add([ $fname ]);
3072         }
3073     }
3074
3075     %table = (%table, %targets);
3076
3077 }
3078
3079 # configuration resolver.  Will only resolve all the lazy evaluation
3080 # codeblocks for the chosen target and all those it inherits from,
3081 # recursively
3082 sub resolve_config {
3083     my $target = shift;
3084     my @breadcrumbs = @_;
3085
3086 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
3087
3088     if (grep { $_ eq $target } @breadcrumbs) {
3089         die "inherit_from loop!  target backtrace:\n  "
3090             ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
3091     }
3092
3093     if (!defined($table{$target})) {
3094         warn "Warning! target $target doesn't exist!\n";
3095         return ();
3096     }
3097     # Recurse through all inheritances.  They will be resolved on the
3098     # fly, so when this operation is done, they will all just be a
3099     # bunch of attributes with string values.
3100     # What we get here, though, are keys with references to lists of
3101     # the combined values of them all.  We will deal with lists after
3102     # this stage is done.
3103     my %combined_inheritance = ();
3104     if ($table{$target}->{inherit_from}) {
3105         my @inherit_from =
3106             map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
3107         foreach (@inherit_from) {
3108             my %inherited_config = resolve_config($_, $target, @breadcrumbs);
3109
3110             # 'template' is a marker that's considered private to
3111             # the config that had it.
3112             delete $inherited_config{template};
3113
3114             foreach (keys %inherited_config) {
3115                 if (!$combined_inheritance{$_}) {
3116                     $combined_inheritance{$_} = [];
3117                 }
3118                 push @{$combined_inheritance{$_}}, $inherited_config{$_};
3119             }
3120         }
3121     }
3122
3123     # We won't need inherit_from in this target any more, since we've
3124     # resolved all the inheritances that lead to this
3125     delete $table{$target}->{inherit_from};
3126
3127     # Now is the time to deal with those lists.  Here's the place to
3128     # decide what shall be done with those lists, all based on the
3129     # values of the target we're currently dealing with.
3130     # - If a value is a coderef, it will be executed with the list of
3131     #   inherited values as arguments.
3132     # - If the corresponding key doesn't have a value at all or is the
3133     #   empty string, the inherited value list will be run through the
3134     #   default combiner (below), and the result becomes this target's
3135     #   value.
3136     # - Otherwise, this target's value is assumed to be a string that
3137     #   will simply override the inherited list of values.
3138     my $default_combiner = add();
3139
3140     my %all_keys =
3141         map { $_ => 1 } (keys %combined_inheritance,
3142                          keys %{$table{$target}});
3143
3144     sub process_values {
3145         my $object    = shift;
3146         my $inherited = shift;  # Always a [ list ]
3147         my $target    = shift;
3148         my $entry     = shift;
3149
3150         $add_called = 0;
3151
3152         while(ref($object) eq "CODE") {
3153             $object = $object->(@$inherited);
3154         }
3155         if (!defined($object)) {
3156             return ();
3157         }
3158         elsif (ref($object) eq "ARRAY") {
3159             local $add_called;  # To make sure recursive calls don't affect it
3160             return [ map { process_values($_, $inherited, $target, $entry) }
3161                      @$object ];
3162         } elsif (ref($object) eq "") {
3163             return $object;
3164         } else {
3165             die "cannot handle reference type ",ref($object)
3166                 ," found in target ",$target," -> ",$entry,"\n";
3167         }
3168     }
3169
3170     foreach (sort keys %all_keys) {
3171         my $previous = $combined_inheritance{$_};
3172
3173         # Current target doesn't have a value for the current key?
3174         # Assign it the default combiner, the rest of this loop body
3175         # will handle it just like any other coderef.
3176         if (!exists $table{$target}->{$_}) {
3177             $table{$target}->{$_} = $default_combiner;
3178         }
3179
3180         $table{$target}->{$_} = process_values($table{$target}->{$_},
3181                                                $combined_inheritance{$_},
3182                                                $target, $_);
3183         unless(defined($table{$target}->{$_})) {
3184             delete $table{$target}->{$_};
3185         }
3186 #        if ($extra_checks &&
3187 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
3188 #            warn "$_ got replaced in $target\n";
3189 #        }
3190     }
3191
3192     # Finally done, return the result.
3193     return %{$table{$target}};
3194 }
3195
3196 sub usage
3197         {
3198         print STDERR $usage;
3199         print STDERR "\npick os/compiler from:\n";
3200         my $j=0;
3201         my $i;
3202         my $k=0;
3203         foreach $i (sort keys %table)
3204                 {
3205                 next if $table{$i}->{template};
3206                 next if $i =~ /^debug/;
3207                 $k += length($i) + 1;
3208                 if ($k > 78)
3209                         {
3210                         print STDERR "\n";
3211                         $k=length($i);
3212                         }
3213                 print STDERR $i . " ";
3214                 }
3215         foreach $i (sort keys %table)
3216                 {
3217                 next if $table{$i}->{template};
3218                 next if $i !~ /^debug/;
3219                 $k += length($i) + 1;
3220                 if ($k > 78)
3221                         {
3222                         print STDERR "\n";
3223                         $k=length($i);
3224                         }
3225                 print STDERR $i . " ";
3226                 }
3227         exit(1);
3228         }
3229
3230 sub compiler_predefined {
3231     state %predefined;
3232     my $cc = shift;
3233
3234     return () if $^O eq 'VMS';
3235
3236     die 'compiler_predefined called without a compiler command'
3237         unless $cc;
3238
3239     if (! $predefined{$cc}) {
3240
3241         $predefined{$cc} = {};
3242
3243         # collect compiler pre-defines from gcc or gcc-alike...
3244         open(PIPE, "$cc -dM -E -x c /dev/null 2>&1 |");
3245         while (my $l = <PIPE>) {
3246             $l =~ m/^#define\s+(\w+(?:\(\w+\))?)(?:\s+(.+))?/ or last;
3247             $predefined{$cc}->{$1} = $2 // '';
3248         }
3249         close(PIPE);
3250     }
3251
3252     return %{$predefined{$cc}};
3253 }
3254
3255 sub which
3256 {
3257     my ($name)=@_;
3258
3259     if (eval { require IPC::Cmd; 1; }) {
3260         IPC::Cmd->import();
3261         return scalar IPC::Cmd::can_run($name);
3262     } else {
3263         # if there is $directories component in splitpath,
3264         # then it's not something to test with $PATH...
3265         return $name if (File::Spec->splitpath($name))[1];
3266
3267         foreach (File::Spec->path()) {
3268             my $fullpath = catfile($_, "$name$target{exe_extension}");
3269             if (-f $fullpath and -x $fullpath) {
3270                 return $fullpath;
3271             }
3272         }
3273     }
3274 }
3275
3276 sub env
3277 {
3278     my $name = shift;
3279     my %opts = @_;
3280
3281     unless ($opts{cacheonly}) {
3282         # Note that if $ENV{$name} doesn't exist or is undefined,
3283         # $config{perlenv}->{$name} will be created with the value
3284         # undef.  This is intentional.
3285
3286         $config{perlenv}->{$name} = $ENV{$name}
3287             if ! exists $config{perlenv}->{$name};
3288     }
3289     return $config{perlenv}->{$name};
3290 }
3291
3292 # Configuration printer ##############################################
3293
3294 sub print_table_entry
3295 {
3296     local $now_printing = shift;
3297     my %target = resolve_config($now_printing);
3298     my $type = shift;
3299
3300     # Don't print the templates
3301     return if $target{template};
3302
3303     my @sequence = (
3304         "sys_id",
3305         "cpp",
3306         "cppflags",
3307         "defines",
3308         "includes",
3309         "cc",
3310         "cflags",
3311         "ld",
3312         "lflags",
3313         "loutflag",
3314         "ex_libs",
3315         "bn_ops",
3316         "enable",
3317         "disable",
3318         "poly1035_asm_src",
3319         "thread_scheme",
3320         "perlasm_scheme",
3321         "dso_scheme",
3322         "shared_target",
3323         "shared_cflag",
3324         "shared_defines",
3325         "shared_ldflag",
3326         "shared_rcflag",
3327         "shared_extension",
3328         "dso_extension",
3329         "obj_extension",
3330         "exe_extension",
3331         "ranlib",
3332         "ar",
3333         "arflags",
3334         "aroutflag",
3335         "rc",
3336         "rcflags",
3337         "rcoutflag",
3338         "mt",
3339         "mtflags",
3340         "mtinflag",
3341         "mtoutflag",
3342         "multilib",
3343         "build_scheme",
3344         );
3345
3346     if ($type eq "TABLE") {
3347         print "\n";
3348         print "*** $now_printing\n";
3349         foreach (@sequence) {
3350             if (ref($target{$_}) eq "ARRAY") {
3351                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
3352             } else {
3353                 printf "\$%-12s = %s\n", $_, $target{$_};
3354             }
3355         }
3356     } elsif ($type eq "HASH") {
3357         my $largest =
3358             length((sort { length($a) <=> length($b) } @sequence)[-1]);
3359         print "    '$now_printing' => {\n";
3360         foreach (@sequence) {
3361             if ($target{$_}) {
3362                 if (ref($target{$_}) eq "ARRAY") {
3363                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
3364                 } else {
3365                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
3366                 }
3367             }
3368         }
3369         print "    },\n";
3370     }
3371 }
3372
3373 # Utility routines ###################################################
3374
3375 # On VMS, if the given file is a logical name, File::Spec::Functions
3376 # will consider it an absolute path.  There are cases when we want a
3377 # purely syntactic check without checking the environment.
3378 sub isabsolute {
3379     my $file = shift;
3380
3381     # On non-platforms, we just use file_name_is_absolute().
3382     return file_name_is_absolute($file) unless $^O eq "VMS";
3383
3384     # If the file spec includes a device or a directory spec,
3385     # file_name_is_absolute() is perfectly safe.
3386     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
3387
3388     # Here, we know the given file spec isn't absolute
3389     return 0;
3390 }
3391
3392 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
3393 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
3394 # realpath() requires that at least all path components except the last is an
3395 # existing directory.  On VMS, the last component of the directory spec must
3396 # exist.
3397 sub absolutedir {
3398     my $dir = shift;
3399
3400     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
3401     # will return the volume name for the device, no matter what.  Also,
3402     # it will return an incorrect directory spec if the argument is a
3403     # directory that doesn't exist.
3404     if ($^O eq "VMS") {
3405         return rel2abs($dir);
3406     }
3407
3408     # We use realpath() on Unix, since no other will properly clean out
3409     # a directory spec.
3410     use Cwd qw/realpath/;
3411
3412     return realpath($dir);
3413 }
3414
3415 # Check if all paths are one and the same, using stat.  They must both exist
3416 # We need this for the cases when File::Spec doesn't detect case insensitivity
3417 # (File::Spec::Unix assumes case sensitivity)
3418 sub samedir {
3419     die "samedir expects two arguments\n" unless scalar @_ == 2;
3420
3421     my @stat0 = stat($_[0]);    # First argument
3422     my @stat1 = stat($_[1]);    # Second argument
3423
3424     die "Couldn't stat $_[0]" unless @stat0;
3425     die "Couldn't stat $_[1]" unless @stat1;
3426
3427     # Compare device number
3428     return 0 unless ($stat0[0] == $stat1[0]);
3429     # Compare "inode".  The perl manual recommends comparing as
3430     # string rather than as number.
3431     return 0 unless ($stat0[1] eq $stat1[1]);
3432
3433     return 1;                   # All the same
3434 }
3435
3436 sub quotify {
3437     my %processors = (
3438         perl    => sub { my $x = shift;
3439                          $x =~ s/([\\\$\@"])/\\$1/g;
3440                          return '"'.$x.'"'; },
3441         maybeshell => sub { my $x = shift;
3442                             (my $y = $x) =~ s/([\\\"])/\\$1/g;
3443                             if ($x ne $y || $x =~ m|\s|) {
3444                                 return '"'.$y.'"';
3445                             } else {
3446                                 return $x;
3447                             }
3448                         },
3449         );
3450     my $for = shift;
3451     my $processor =
3452         defined($processors{$for}) ? $processors{$for} : sub { shift; };
3453
3454     return map { $processor->($_); } @_;
3455 }
3456
3457 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
3458 # $filename is a file name to read from
3459 # $line_concat_cond_re is a regexp detecting a line continuation ending
3460 # $line_concat is a CODEref that takes care of concatenating two lines
3461 sub collect_from_file {
3462     my $filename = shift;
3463     my $line_concat_cond_re = shift;
3464     my $line_concat = shift;
3465
3466     open my $fh, $filename || die "unable to read $filename: $!\n";
3467     return sub {
3468         my $saved_line = "";
3469         $_ = "";
3470         while (<$fh>) {
3471             s|\R$||;
3472             if (defined $line_concat) {
3473                 $_ = $line_concat->($saved_line, $_);
3474                 $saved_line = "";
3475             }
3476             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3477                 $saved_line = $_;
3478                 next;
3479             }
3480             return $_;
3481         }
3482         die "$filename ending with continuation line\n" if $_;
3483         close $fh;
3484         return undef;
3485     }
3486 }
3487
3488 # collect_from_array($array, $line_concat_cond_re, $line_concat)
3489 # $array is an ARRAYref of lines
3490 # $line_concat_cond_re is a regexp detecting a line continuation ending
3491 # $line_concat is a CODEref that takes care of concatenating two lines
3492 sub collect_from_array {
3493     my $array = shift;
3494     my $line_concat_cond_re = shift;
3495     my $line_concat = shift;
3496     my @array = (@$array);
3497
3498     return sub {
3499         my $saved_line = "";
3500         $_ = "";
3501         while (defined($_ = shift @array)) {
3502             s|\R$||;
3503             if (defined $line_concat) {
3504                 $_ = $line_concat->($saved_line, $_);
3505                 $saved_line = "";
3506             }
3507             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3508                 $saved_line = $_;
3509                 next;
3510             }
3511             return $_;
3512         }
3513         die "input text ending with continuation line\n" if $_;
3514         return undef;
3515     }
3516 }
3517
3518 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
3519 # $lineiterator is a CODEref that delivers one line at a time.
3520 # All following arguments are regex/CODEref pairs, where the regexp detects a
3521 # line and the CODEref does something with the result of the regexp.
3522 sub collect_information {
3523     my $lineiterator = shift;
3524     my %collectors = @_;
3525
3526     while(defined($_ = $lineiterator->())) {
3527         s|\R$||;
3528         my $found = 0;
3529         if ($collectors{"BEFORE"}) {
3530             $collectors{"BEFORE"}->($_);
3531         }
3532         foreach my $re (keys %collectors) {
3533             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
3534                 $collectors{$re}->($lineiterator);
3535                 $found = 1;
3536             };
3537         }
3538         if ($collectors{"OTHERWISE"}) {
3539             $collectors{"OTHERWISE"}->($lineiterator, $_)
3540                 unless $found || !defined $collectors{"OTHERWISE"};
3541         }
3542         if ($collectors{"AFTER"}) {
3543             $collectors{"AFTER"}->($_);
3544         }
3545     }
3546 }
3547
3548 # tokenize($line)
3549 # tokenize($line,$separator)
3550 # $line is a line of text to split up into tokens
3551 # $separator [optional] is a regular expression that separates the tokens,
3552 # the default being spaces.  Do not use quotes of any kind as separators,
3553 # that will give undefined results.
3554 # Returns a list of tokens.
3555 #
3556 # Tokens are divided by separator (spaces by default).  If the tokens include
3557 # the separators, they have to be quoted with single or double quotes.
3558 # Double quotes inside a double quoted token must be escaped.  Escaping is done
3559 # with backslash.
3560 # Basically, the same quoting rules apply for " and ' as in any
3561 # Unix shell.
3562 sub tokenize {
3563     my $line = my $debug_line = shift;
3564     my $separator = shift // qr|\s+|;
3565     my @result = ();
3566
3567     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
3568         print STDERR "DEBUG[tokenize]: \$separator = $separator\n";
3569     }
3570
3571     while ($line =~ s|^${separator}||, $line ne "") {
3572         my $token = "";
3573     again:
3574         $line =~ m/^(.*?)(${separator}|"|'|$)/;
3575         $token .= $1;
3576         $line = $2.$';
3577
3578         if ($line =~ m/^"((?:[^"\\]+|\\.)*)"/) {
3579             $token .= $1;
3580             $line = $';
3581             goto again;
3582         } elsif ($line =~ m/^'([^']*)'/) {
3583             $token .= $1;
3584             $line = $';
3585             goto again;
3586         }
3587         push @result, $token;
3588     }
3589
3590     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
3591         print STDERR "DEBUG[tokenize]: Parsed '$debug_line' into:\n";
3592         print STDERR "DEBUG[tokenize]: ('", join("', '", @result), "')\n";
3593     }
3594     return @result;
3595 }