Configure

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