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::Glob;
  21
  22 # see INSTALL for instructions.
  23
  24 my $orig_death_handler = $SIG{__DIE__};
  25 $SIG{__DIE__} = \&death_handler;
  26
  27 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";
  28
  29 # Options:
  30 #
  31 # --config      add the given configuration file, which will be read after
  32 #               any "Configurations*" files that are found in the same
  33 #               directory as this script.
  34 # --prefix      prefix for the OpenSSL installation, which includes the
  35 #               directories bin, lib, include, share/man, share/doc/openssl
  36 #               This becomes the value of INSTALLTOP in Makefile
  37 #               (Default: /usr/local)
  38 # --openssldir  OpenSSL data area, such as openssl.cnf, certificates and keys.
  39 #               If it's a relative directory, it will be added on the directory
  40 #               given with --prefix.
  41 #               This becomes the value of OPENSSLDIR in Makefile and in C.
  42 #               (Default: PREFIX/ssl)
  43 #
  44 # --cross-compile-prefix Add specified prefix to binutils components.
  45 #
  46 # --api         One of 0.9.8, 1.0.0, 1.0.1, 1.0.2, 1.1.0, 1.1.1, or 3.0.0 / 3.
  47 #               Do not compile support for interfaces deprecated as of the
  48 #               specified OpenSSL version.
  49 #
  50 # no-hw-xxx     do not compile support for specific crypto hardware.
  51 #               Generic OpenSSL-style methods relating to this support
  52 #               are always compiled but return NULL if the hardware
  53 #               support isn't compiled.
  54 # no-hw         do not compile support for any crypto hardware.
  55 # [no-]threads  [don't] try to create a library that is suitable for
  56 #               multithreaded applications (default is "threads" if we
  57 #               know how to do it)
  58 # [no-]shared   [don't] try to create shared libraries when supported.
  59 # [no-]pic      [don't] try to build position independent code when supported.
  60 #               If disabled, it also disables shared and dynamic-engine.
  61 # no-asm        do not use assembler
  62 # no-egd        do not compile support for the entropy-gathering daemon APIs
  63 # [no-]zlib     [don't] compile support for zlib compression.
  64 # zlib-dynamic  Like "zlib", but the zlib library is expected to be a shared
  65 #               library and will be loaded in run-time by the OpenSSL library.
  66 # sctp          include SCTP support
  67 # no-uplink     Don't build support for UPLINK interface.
  68 # enable-weak-ssl-ciphers
  69 #               Enable weak ciphers that are disabled by default.
  70 # 386           generate 80386 code in assembly modules
  71 # no-sse2       disables IA-32 SSE2 code in assembly modules, the above
  72 #               mentioned '386' option implies this one
  73 # no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
  74 # -<xxx> +<xxx> compiler options are passed through
  75 # -static       while -static is also a pass-through compiler option (and
  76 #               as such is limited to environments where it's actually
  77 #               meaningful), it triggers a number configuration options,
  78 #               namely no-pic, no-shared and no-threads. It is
  79 #               argued that the only reason to produce statically linked
  80 #               binaries (and in context it means executables linked with
  81 #               -static flag, and not just executables linked with static
  82 #               libcrypto.a) is to eliminate dependency on specific run-time,
  83 #               a.k.a. libc version. The mentioned config options are meant
  84 #               to achieve just that. Unfortunately on Linux it's impossible
  85 #               to eliminate the dependency completely for openssl executable
  86 #               because of getaddrinfo and gethostbyname calls, which can
  87 #               invoke dynamically loadable library facility anyway to meet
  88 #               the lookup requests. For this reason on Linux statically
  89 #               linked openssl executable has rather debugging value than
  90 #               production quality.
  91 #
  92 # BN_LLONG      use the type 'long long' in crypto/bn/bn.h
  93 # RC4_CHAR      use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
  94 # Following are set automatically by this script
  95 #
  96 # MD5_ASM       use some extra md5 assembler,
  97 # SHA1_ASM      use some extra sha1 assembler, must define L_ENDIAN for x86
  98 # RMD160_ASM    use some extra ripemd160 assembler,
  99 # SHA256_ASM    sha256_block is implemented in assembler
 100 # SHA512_ASM    sha512_block is implemented in assembler
 101 # AES_ASM       AES_[en|de]crypt is implemented in assembler
 102
 103 # Minimum warning options... any contributions to OpenSSL should at least
 104 # get past these.  Note that we only use these with C compilers, not with
 105 # C++ compilers.
 106
 107 # DEBUG_UNUSED enables __owur (warn unused result) checks.
 108 # -DPEDANTIC complements -pedantic and is meant to mask code that
 109 # is not strictly standard-compliant and/or implementation-specific,
 110 # e.g. inline assembly, disregards to alignment requirements, such
 111 # that -pedantic would complain about. Incidentally -DPEDANTIC has
 112 # to be used even in sanitized builds, because sanitizer too is
 113 # supposed to and does take notice of non-standard behaviour. Then
 114 # -pedantic with pre-C9x compiler would also complain about 'long
 115 # long' not being supported. As 64-bit algorithms are common now,
 116 # it grew impossible to resolve this without sizeable additional
 117 # code, so we just tell compiler to be pedantic about everything
 118 # but 'long long' type.
 119
 120 my @gcc_devteam_warn = qw(
 121     -DDEBUG_UNUSED
 122     -DPEDANTIC -pedantic -Wno-long-long
 123     -Wall
 124     -Wextra
 125     -Wno-unused-parameter
 126     -Wno-missing-field-initializers
 127     -Wswitch
 128     -Wsign-compare
 129     -Wshadow
 130     -Wformat
 131     -Wtype-limits
 132     -Wundef
 133     -Werror
 134     -Wmissing-prototypes
 135     -Wstrict-prototypes
 136 );
 137
 138 # These are used in addition to $gcc_devteam_warn when the compiler is clang.
 139 # TODO(openssl-team): fix problems and investigate if (at least) the
 140 # following warnings can also be enabled:
 141 #       -Wcast-align
 142 #       -Wunreachable-code -- no, too ugly/compiler-specific
 143 #       -Wlanguage-extension-token -- no, we use asm()
 144 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
 145 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
 146 my @clang_devteam_warn = qw(
 147     -Wswitch-default
 148     -Wno-parentheses-equality
 149     -Wno-language-extension-token
 150     -Wno-extended-offsetof
 151     -Wconditional-uninitialized
 152     -Wincompatible-pointer-types-discards-qualifiers
 153     -Wno-unknown-warning-option
 154     -Wmissing-variable-declarations
 155 );
 156
 157 # This adds backtrace information to the memory leak info.  Is only used
 158 # when crypto-mdebug-backtrace is enabled.
 159 my $memleak_devteam_backtrace = "-rdynamic";
 160
 161 my $strict_warnings = 0;
 162
 163 # As for $BSDthreads. Idea is to maintain "collective" set of flags,
 164 # which would cover all BSD flavors. -pthread applies to them all,
 165 # but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
 166 # -lc_r, which is sufficient. FreeBSD 4.x expands it as -lc_r,
 167 # which has to be accompanied by explicit -D_THREAD_SAFE and
 168 # sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
 169 # seems to be sufficient?
 170 our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
 171
 172 #
 173 # API compatibility name to version number mapping.
 174 #
 175 my $maxapi = "3.0.0";           # API for "no-deprecated" builds
 176 my $apitable = {
 177     "3.0.0" => 3,
 178     "1.1.1" => 2,
 179     "1.1.0" => 2,
 180     "1.0.2" => 1,
 181     "1.0.1" => 1,
 182     "1.0.0" => 1,
 183     "0.9.8" => 0,
 184 };
 185
 186 our %table = ();
 187 our %config = ();
 188 our %withargs = ();
 189 our $now_printing;      # set to current entry's name in print_table_entry
 190                         # (todo: right thing would be to encapsulate name
 191                         # into %target [class] and make print_table_entry
 192                         # a method)
 193
 194 # Forward declarations ###############################################
 195
 196 # read_config(filename)
 197 #
 198 # Reads a configuration file and populates %table with the contents
 199 # (which the configuration file places in %targets).
 200 sub read_config;
 201
 202 # resolve_config(target)
 203 #
 204 # Resolves all the late evaluations, inheritances and so on for the
 205 # chosen target and any target it inherits from.
 206 sub resolve_config;
 207
 208
 209 # Information collection #############################################
 210
 211 # Unified build supports separate build dir
 212 my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
 213 my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
 214 my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));
 215
 216 my $local_config_envname = 'OPENSSL_LOCAL_CONFIG_DIR';
 217
 218 $config{sourcedir} = abs2rel($srcdir);
 219 $config{builddir} = abs2rel($blddir);
 220
 221 # Collect reconfiguration information if needed
 222 my @argvcopy=@ARGV;
 223
 224 if (grep /^reconf(igure)?$/, @argvcopy) {
 225     die "reconfiguring with other arguments present isn't supported"
 226         if scalar @argvcopy > 1;
 227     if (-f "./configdata.pm") {
 228         my $file = "./configdata.pm";
 229         unless (my $return = do $file) {
 230             die "couldn't parse $file: $@" if $@;
 231             die "couldn't do $file: $!"    unless defined $return;
 232             die "couldn't run $file"       unless $return;
 233         }
 234
 235         @argvcopy = defined($configdata::config{perlargv}) ?
 236             @{$configdata::config{perlargv}} : ();
 237         die "Incorrect data to reconfigure, please do a normal configuration\n"
 238             if (grep(/^reconf/,@argvcopy));
 239         $config{perlenv} = $configdata::config{perlenv} // {};
 240     } else {
 241         die "Insufficient data to reconfigure, please do a normal configuration\n";
 242     }
 243 }
 244
 245 $config{perlargv} = [ @argvcopy ];
 246
 247 # Collect version numbers
 248 $config{major} = "unknown";
 249 $config{minor} = "unknown";
 250 $config{patch} = "unknown";
 251 $config{prerelease} = "";
 252 $config{build_metadata} = "";
 253 $config{shlib_version} = "unknown";
 254
 255 collect_information(
 256     collect_from_file(catfile($srcdir,'include/openssl/opensslv.h')),
 257     qr/#\s+define\s+OPENSSL_VERSION_MAJOR\s+(\d+)/ =>
 258         sub { $config{major} = $1; },
 259     qr/#\s+define\s+OPENSSL_VERSION_MINOR\s+(\d+)/ =>
 260         sub { $config{minor} = $1; },
 261     qr/#\s+define\s+OPENSSL_VERSION_PATCH\s+(\d+)/ =>
 262         sub { $config{patch} = $1; },
 263     qr/#\s+define\s+OPENSSL_VERSION_PRE_RELEASE\s+"((?:\\.|[^"])*)"/ =>
 264         sub { $config{prerelease} = $1; },
 265     qr/#\s+define\s+OPENSSL_VERSION_BUILD_METADATA\s+"((?:\\.|[^"])*)"/ =>
 266         sub { $config{build_metadata} = $1; },
 267     qr/#\s+define\s+OPENSSL_SHLIB_VERSION\s+([\d\.]+)/ =>
 268         sub { $config{shlib_version} = $1; },
 269     );
 270 die "erroneous version information in opensslv.h: ",
 271     "$config{major}.$config{minor}.$config{patch}, $config{shlib_version}\n"
 272     if ($config{major} eq "unknown"
 273             || $config{minor} eq "unknown"
 274             || $config{patch} eq "unknown"
 275             || $config{shlib_version} eq "unknown");
 276
 277 $config{version} = "$config{major}.$config{minor}.$config{patch}";
 278 $config{full_version} = "$config{version}$config{prerelease}$config{build_metadata}";
 279
 280 # Collect target configurations
 281
 282 my $pattern = catfile(dirname($0), "Configurations", "*.conf");
 283 foreach (sort glob($pattern)) {
 284     &read_config($_);
 285 }
 286
 287 if (defined env($local_config_envname)) {
 288     if ($^O eq 'VMS') {
 289         # VMS environment variables are logical names,
 290         # which can be used as is
 291         $pattern = $local_config_envname . ':' . '*.conf';
 292     } else {
 293         $pattern = catfile(env($local_config_envname), '*.conf');
 294     }
 295
 296     foreach (sort glob($pattern)) {
 297         &read_config($_);
 298     }
 299 }
 300
 301 # Save away perl command information
 302 $config{perl_cmd} = $^X;
 303 $config{perl_version} = $Config{version};
 304 $config{perl_archname} = $Config{archname};
 305
 306 $config{prefix}="";
 307 $config{openssldir}="";
 308 $config{processor}="";
 309 $config{libdir}="";
 310 my $auto_threads=1;    # enable threads automatically? true by default
 311 my $default_ranlib;
 312
 313 # Known TLS and DTLS protocols
 314 my @tls = qw(ssl3 tls1 tls1_1 tls1_2 tls1_3);
 315 my @dtls = qw(dtls1 dtls1_2);
 316
 317 # Explicitly known options that are possible to disable.  They can
 318 # be regexps, and will be used like this: /^no-${option}$/
 319 # For developers: keep it sorted alphabetically
 320
 321 my @disablables = (
 322     "ktls",
 323     "afalgeng",
 324     "aria",
 325     "asan",
 326     "asm",
 327     "async",
 328     "autoalginit",
 329     "autoerrinit",
 330     "autoload-config",
 331     "bf",
 332     "blake2",
 333     "buildtest-c++",
 334     "camellia",
 335     "capieng",
 336     "cast",
 337     "chacha",
 338     "cmac",
 339     "cmp",
 340     "cms",
 341     "comp",
 342     "crypto-mdebug",
 343     "crypto-mdebug-backtrace",
 344     "ct",
 345     "deprecated",
 346     "des",
 347     "devcryptoeng",
 348     "dgram",
 349     "dh",
 350     "dsa",
 351     "dtls",
 352     "dynamic-engine",
 353     "ec",
 354     "ec2m",
 355     "ecdh",
 356     "ecdsa",
 357     "ec_nistp_64_gcc_128",
 358     "egd",
 359     "engine",
 360     "err",
 361     "external-tests",
 362     "filenames",
 363     "fips",
 364     "fuzz-libfuzzer",
 365     "fuzz-afl",
 366     "gost",
 367     "idea",
 368     "legacy",
 369     "makedepend",
 370     "md2",
 371     "md4",
 372     "mdc2",
 373     "module",
 374     "msan",
 375     "multiblock",
 376     "nextprotoneg",
 377     "pinshared",
 378     "ocb",
 379     "ocsp",
 380     "padlockeng",
 381     "pic",
 382     "poly1305",
 383     "posix-io",
 384     "psk",
 385     "rc2",
 386     "rc4",
 387     "rc5",
 388     "rdrand",
 389     "rfc3779",
 390     "rmd160",
 391     "scrypt",
 392     "sctp",
 393     "seed",
 394     "shared",
 395     "siphash",
 396     "siv",
 397     "sm2",
 398     "sm3",
 399     "sm4",
 400     "sock",
 401     "srp",
 402     "srtp",
 403     "sse2",
 404     "ssl",
 405     "ssl-trace",
 406     "static-engine",
 407     "stdio",
 408     "tests",
 409     "threads",
 410     "tls",
 411     "trace",
 412     "ts",
 413     "ubsan",
 414     "ui-console",
 415     "unit-test",
 416     "uplink",
 417     "whirlpool",
 418     "weak-ssl-ciphers",
 419     "zlib",
 420     "zlib-dynamic",
 421     );
 422 foreach my $proto ((@tls, @dtls))
 423         {
 424         push(@disablables, $proto);
 425         push(@disablables, "$proto-method") unless $proto eq "tls1_3";
 426         }
 427
 428 # Internal disablables, for aliasing purposes.  They serve no special
 429 # purpose here, but allow scripts to get to know them through configdata.pm,
 430 # where these are merged with @disablables.
 431 # The actual aliasing mechanism is done via %disable_cascades
 432 my @disablables_int = qw(
 433     crmf
 434     );
 435
 436 my %deprecated_disablables = (
 437     "ssl2" => undef,
 438     "buf-freelists" => undef,
 439     "hw" => "hw",               # causes cascade, but no macro
 440     "hw-padlock" => "padlockeng",
 441     "ripemd" => "rmd160",
 442     "ui" => "ui-console",
 443     "dso" => undef,
 444     "heartbeats" => undef,
 445     );
 446
 447 # All of the following are disabled by default:
 448
 449 our %disabled = ( # "what"         => "comment"
 450                   "asan"                => "default",
 451                   "buildtest-c++"       => "default",
 452                   "crypto-mdebug"       => "default",
 453                   "crypto-mdebug-backtrace" => "default",
 454                   "devcryptoeng"        => "default",
 455                   "ec_nistp_64_gcc_128" => "default",
 456                   "egd"                 => "default",
 457                   "external-tests"      => "default",
 458                   "fuzz-libfuzzer"      => "default",
 459                   "fuzz-afl"            => "default",
 460                   "md2"                 => "default",
 461                   "msan"                => "default",
 462                   "rc5"                 => "default",
 463                   "sctp"                => "default",
 464                   "ssl-trace"           => "default",
 465                   "ssl3"                => "default",
 466                   "ssl3-method"         => "default",
 467                   "trace"               => "default",
 468                   "ubsan"               => "default",
 469                   "unit-test"           => "default",
 470                   "weak-ssl-ciphers"    => "default",
 471                   "zlib"                => "default",
 472                   "zlib-dynamic"        => "default",
 473                   "ktls"                => "default",
 474                 );
 475
 476 # Note: => pair form used for aesthetics, not to truly make a hash table
 477 my @disable_cascades = (
 478     # "what"            => [ "cascade", ... ]
 479     sub { $config{processor} eq "386" }
 480                         => [ "sse2" ],
 481     "ssl"               => [ "ssl3" ],
 482     "ssl3-method"       => [ "ssl3" ],
 483     "zlib"              => [ "zlib-dynamic" ],
 484     "des"               => [ "mdc2" ],
 485     "ec"                => [ "ecdsa", "ecdh" ],
 486
 487     "dgram"             => [ "dtls", "sctp" ],
 488     "sock"              => [ "dgram" ],
 489     "dtls"              => [ @dtls ],
 490     sub { 0 == scalar grep { !$disabled{$_} } @dtls }
 491                         => [ "dtls" ],
 492
 493     "tls"               => [ @tls ],
 494     sub { 0 == scalar grep { !$disabled{$_} } @tls }
 495                         => [ "tls" ],
 496
 497     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
 498
 499     # If no modules, then no dynamic engines either
 500     "module"            => [ "dynamic-engine" ],
 501
 502     # Without shared libraries, dynamic engines aren't possible.
 503     # This is due to them having to link with libcrypto and register features
 504     # using the ENGINE functionality, and since that relies on global tables,
 505     # those *have* to be exacty the same as the ones accessed from the app,
 506     # which cannot be guaranteed if shared libraries aren't present.
 507     # (note that even with shared libraries, both the app and dynamic engines
 508     # must be linked with the same library)
 509     "shared"            => [ "dynamic-engine", "uplink" ],
 510     # Other modules don't necessarily have to link with libcrypto, so shared
 511     # libraries do not have to be a condition to produce those.
 512
 513     # Without position independent code, there can be no shared libraries
 514     # or modules.
 515     "pic"               => [ "shared", "module" ],
 516
 517     "module"            => [ "fips", "legacy" ],
 518
 519     "engine"            => [ grep /eng$/, @disablables ],
 520     "hw"                => [ "padlockeng" ],
 521
 522     # no-autoalginit is only useful when building non-shared
 523     "autoalginit"       => [ "shared", "apps" ],
 524
 525     "stdio"             => [ "apps", "capieng", "egd" ],
 526     "apps"              => [ "tests" ],
 527     "tests"             => [ "external-tests" ],
 528     "comp"              => [ "zlib" ],
 529     "ec"                => [ "tls1_3", "sm2" ],
 530     "sm3"               => [ "sm2" ],
 531     sub { !$disabled{"unit-test"} } => [ "heartbeats" ],
 532
 533     sub { !$disabled{"msan"} } => [ "asm" ],
 534
 535     sub { $disabled{cmac}; } => [ "siv" ],
 536     "legacy"                 => [ "md2" ],
 537
 538     "cmp"               => [ "crmf" ],
 539     );
 540
 541 # Avoid protocol support holes.  Also disable all versions below N, if version
 542 # N is disabled while N+1 is enabled.
 543 #
 544 my @list = (reverse @tls);
 545 while ((my $first, my $second) = (shift @list, shift @list)) {
 546     last unless @list;
 547     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 548                               => [ @list ] );
 549     unshift @list, $second;
 550 }
 551 my @list = (reverse @dtls);
 552 while ((my $first, my $second) = (shift @list, shift @list)) {
 553     last unless @list;
 554     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 555                               => [ @list ] );
 556     unshift @list, $second;
 557 }
 558
 559 # Explicit "no-..." options will be collected in %disabled along with the defaults.
 560 # To remove something from %disabled, use "enable-foo".
 561 # For symmetry, "disable-foo" is a synonym for "no-foo".
 562
 563 &usage if ($#ARGV < 0);
 564
 565 # For the "make variables" CINCLUDES and CDEFINES, we support lists with
 566 # platform specific list separators.  Users from those platforms should
 567 # recognise those separators from how you set up the PATH to find executables.
 568 # The default is the Unix like separator, :, but as an exception, we also
 569 # support the space as separator.
 570 my $list_separator_re =
 571     { VMS           => qr/(?<!\^),/,
 572       MSWin32       => qr/(?<!\\);/ } -> {$^O} // qr/(?<!\\)[:\s]/;
 573 # All the "make variables" we support
 574 # Some get pre-populated for the sake of backward compatibility
 575 # (we supported those before the change to "make variable" support.
 576 my %user = (
 577     AR          => env('AR'),
 578     ARFLAGS     => [],
 579     AS          => undef,
 580     ASFLAGS     => [],
 581     CC          => env('CC'),
 582     CFLAGS      => [ env('CFLAGS') || () ],
 583     CXX         => env('CXX'),
 584     CXXFLAGS    => [ env('CXXFLAGS') || () ],
 585     CPP         => undef,
 586     CPPFLAGS    => [ env('CPPFLAGS') || () ],  # -D, -I, -Wp,
 587     CPPDEFINES  => [],  # Alternative for -D
 588     CPPINCLUDES => [],  # Alternative for -I
 589     CROSS_COMPILE => env('CROSS_COMPILE'),
 590     HASHBANGPERL=> env('HASHBANGPERL') || env('PERL'),
 591     LD          => undef,
 592     LDFLAGS     => [ env('LDFLAGS') || () ],  # -L, -Wl,
 593     LDLIBS      => [ env('LDLIBS') || () ],  # -l
 594     MT          => undef,
 595     MTFLAGS     => [],
 596     PERL        => env('PERL') || ($^O ne "VMS" ? $^X : "perl"),
 597     RANLIB      => env('RANLIB'),
 598     RC          => env('RC') || env('WINDRES'),
 599     RCFLAGS     => [ env('RCFLAGS') || () ],
 600     RM          => undef,
 601    );
 602 # Info about what "make variables" may be prefixed with the cross compiler
 603 # prefix.  This should NEVER mention any such variable with a list for value.
 604 my @user_crossable = qw ( AR AS CC CXX CPP LD MT RANLIB RC );
 605 # The same but for flags given as Configure options.  These are *additional*
 606 # input, as opposed to the VAR=string option that override the corresponding
 607 # config target attributes
 608 my %useradd = (
 609     CPPDEFINES  => [],
 610     CPPINCLUDES => [],
 611     CPPFLAGS    => [],
 612     CFLAGS      => [],
 613     CXXFLAGS    => [],
 614     LDFLAGS     => [],
 615     LDLIBS      => [],
 616     RCFLAGS     => [],
 617    );
 618
 619 my %user_synonyms = (
 620     HASHBANGPERL=> 'PERL',
 621     RC          => 'WINDRES',
 622    );
 623
 624 # Some target attributes have been renamed, this is the translation table
 625 my %target_attr_translate =(
 626     ar          => 'AR',
 627     as          => 'AS',
 628     cc          => 'CC',
 629     cxx         => 'CXX',
 630     cpp         => 'CPP',
 631     hashbangperl => 'HASHBANGPERL',
 632     ld          => 'LD',
 633     mt          => 'MT',
 634     ranlib      => 'RANLIB',
 635     rc          => 'RC',
 636     rm          => 'RM',
 637    );
 638
 639 # Initialisers coming from 'config' scripts
 640 $config{defines} = [ split(/$list_separator_re/, env('__CNF_CPPDEFINES')) ];
 641 $config{includes} = [ split(/$list_separator_re/, env('__CNF_CPPINCLUDES')) ];
 642 $config{cppflags} = [ env('__CNF_CPPFLAGS') || () ];
 643 $config{cflags} = [ env('__CNF_CFLAGS') || () ];
 644 $config{cxxflags} = [ env('__CNF_CXXFLAGS') || () ];
 645 $config{lflags} = [ env('__CNF_LDFLAGS') || () ];
 646 $config{ex_libs} = [ env('__CNF_LDLIBS') || () ];
 647
 648 $config{openssl_api_defines}=[];
 649 $config{openssl_sys_defines}=[];
 650 $config{openssl_feature_defines}=[];
 651 $config{options}="";
 652 $config{build_type} = "release";
 653 my $target="";
 654
 655 my %cmdvars = ();               # Stores FOO='blah' type arguments
 656 my %unsupported_options = ();
 657 my %deprecated_options = ();
 658 # If you change this, update apps/version.c
 659 my @known_seed_sources = qw(getrandom devrandom os egd none rdcpu librandom);
 660 my @seed_sources = ();
 661 while (@argvcopy)
 662         {
 663         $_ = shift @argvcopy;
 664
 665         # Support env variable assignments among the options
 666         if (m|^(\w+)=(.+)?$|)
 667                 {
 668                 $cmdvars{$1} = $2;
 669                 # Every time a variable is given as a configuration argument,
 670                 # it acts as a reset if the variable.
 671                 if (exists $user{$1})
 672                         {
 673                         $user{$1} = ref $user{$1} eq "ARRAY" ? [] : undef;
 674                         }
 675                 #if (exists $useradd{$1})
 676                 #       {
 677                 #       $useradd{$1} = [];
 678                 #       }
 679                 next;
 680                 }
 681
 682         # VMS is a case insensitive environment, and depending on settings
 683         # out of our control, we may receive options uppercased.  Let's
 684         # downcase at least the part before any equal sign.
 685         if ($^O eq "VMS")
 686                 {
 687                 s/^([^=]*)/lc($1)/e;
 688                 }
 689
 690         # some people just can't read the instructions, clang people have to...
 691         s/^-no-(?!integrated-as)/no-/;
 692
 693         # rewrite some options in "enable-..." form
 694         s /^-?-?shared$/enable-shared/;
 695         s /^sctp$/enable-sctp/;
 696         s /^threads$/enable-threads/;
 697         s /^zlib$/enable-zlib/;
 698         s /^zlib-dynamic$/enable-zlib-dynamic/;
 699
 700         if (/^(no|disable|enable)-(.+)$/)
 701                 {
 702                 my $word = $2;
 703                 if ($word !~ m|hw(?:-.+)| # special treatment for hw regexp opt
 704                         && !exists $deprecated_disablables{$word}
 705                         && !grep { $word eq $_ } @disablables)
 706                         {
 707                         $unsupported_options{$_} = 1;
 708                         next;
 709                         }
 710                 }
 711         if (/^no-(.+)$/ || /^disable-(.+)$/)
 712                 {
 713                 foreach my $proto ((@tls, @dtls))
 714                         {
 715                         if ($1 eq "$proto-method")
 716                                 {
 717                                 $disabled{"$proto"} = "option($proto-method)";
 718                                 last;
 719                                 }
 720                         }
 721                 if ($1 eq "dtls")
 722                         {
 723                         foreach my $proto (@dtls)
 724                                 {
 725                                 $disabled{$proto} = "option(dtls)";
 726                                 }
 727                         $disabled{"dtls"} = "option(dtls)";
 728                         }
 729                 elsif ($1 eq "ssl")
 730                         {
 731                         # Last one of its kind
 732                         $disabled{"ssl3"} = "option(ssl)";
 733                         }
 734                 elsif ($1 eq "tls")
 735                         {
 736                         # XXX: Tests will fail if all SSL/TLS
 737                         # protocols are disabled.
 738                         foreach my $proto (@tls)
 739                                 {
 740                                 $disabled{$proto} = "option(tls)";
 741                                 }
 742                         }
 743                 elsif ($1 eq "static-engine")
 744                         {
 745                         delete $disabled{"dynamic-engine"};
 746                         }
 747                 elsif ($1 eq "dynamic-engine")
 748                         {
 749                         $disabled{"dynamic-engine"} = "option";
 750                         }
 751                 elsif (exists $deprecated_disablables{$1})
 752                         {
 753                         $deprecated_options{$_} = 1;
 754                         if (defined $deprecated_disablables{$1})
 755                                 {
 756                                 $disabled{$deprecated_disablables{$1}} = "option";
 757                                 }
 758                         }
 759                 elsif ($1 =~ m|hw(?:-.+)|) # deprecate hw options in regexp form
 760                         {
 761                         $deprecated_options{$_} = 1;
 762                         }
 763                 else
 764                         {
 765                         $disabled{$1} = "option";
 766                         }
 767                 # No longer an automatic choice
 768                 $auto_threads = 0 if ($1 eq "threads");
 769                 }
 770         elsif (/^enable-(.+)$/)
 771                 {
 772                 if ($1 eq "static-engine")
 773                         {
 774                         $disabled{"dynamic-engine"} = "option";
 775                         }
 776                 elsif ($1 eq "dynamic-engine")
 777                         {
 778                         delete $disabled{"dynamic-engine"};
 779                         }
 780                 elsif ($1 eq "zlib-dynamic")
 781                         {
 782                         delete $disabled{"zlib"};
 783                         }
 784                 my $algo = $1;
 785                 delete $disabled{$algo};
 786
 787                 # No longer an automatic choice
 788                 $auto_threads = 0 if ($1 eq "threads");
 789                 }
 790         elsif (/^--strict-warnings$/)
 791                 {
 792                 # Pretend that our strict flags is a C flag, and replace it
 793                 # with the proper flags later on
 794                 push @{$useradd{CFLAGS}}, '--ossl-strict-warnings';
 795                 $strict_warnings=1;
 796                 }
 797         elsif (/^--debug$/)
 798                 {
 799                 $config{build_type} = "debug";
 800                 }
 801         elsif (/^--release$/)
 802                 {
 803                 $config{build_type} = "release";
 804                 }
 805         elsif (/^386$/)
 806                 { $config{processor}=386; }
 807         elsif (/^fips$/)
 808                 {
 809                 die "FIPS mode not supported\n";
 810                 }
 811         elsif (/^rsaref$/)
 812                 {
 813                 # No RSAref support any more since it's not needed.
 814                 # The check for the option is there so scripts aren't
 815                 # broken
 816                 }
 817         elsif (/^nofipscanistercheck$/)
 818                 {
 819                 die "FIPS mode not supported\n";
 820                 }
 821         elsif (/^[-+]/)
 822                 {
 823                 if (/^--prefix=(.*)$/)
 824                         {
 825                         $config{prefix}=$1;
 826                         die "Directory given with --prefix MUST be absolute\n"
 827                                 unless file_name_is_absolute($config{prefix});
 828                         }
 829                 elsif (/^--api=(.*)$/)
 830                         {
 831                         $config{api}=$1;
 832                         }
 833                 elsif (/^--libdir=(.*)$/)
 834                         {
 835                         $config{libdir}=$1;
 836                         }
 837                 elsif (/^--openssldir=(.*)$/)
 838                         {
 839                         $config{openssldir}=$1;
 840                         }
 841                 elsif (/^--with-zlib-lib=(.*)$/)
 842                         {
 843                         $withargs{zlib_lib}=$1;
 844                         }
 845                 elsif (/^--with-zlib-include=(.*)$/)
 846                         {
 847                         $withargs{zlib_include}=$1;
 848                         }
 849                 elsif (/^--with-fuzzer-lib=(.*)$/)
 850                         {
 851                         $withargs{fuzzer_lib}=$1;
 852                         }
 853                 elsif (/^--with-fuzzer-include=(.*)$/)
 854                         {
 855                         $withargs{fuzzer_include}=$1;
 856                         }
 857                 elsif (/^--with-rand-seed=(.*)$/)
 858                         {
 859                         foreach my $x (split(m|,|, $1))
 860                             {
 861                             die "Unknown --with-rand-seed choice $x\n"
 862                                 if ! grep { $x eq $_ } @known_seed_sources;
 863                             push @seed_sources, $x;
 864                             }
 865                         }
 866                 elsif (/^--cross-compile-prefix=(.*)$/)
 867                         {
 868                         $user{CROSS_COMPILE}=$1;
 869                         }
 870                 elsif (/^--config=(.*)$/)
 871                         {
 872                         read_config $1;
 873                         }
 874                 elsif (/^-l(.*)$/)
 875                         {
 876                         push @{$useradd{LDLIBS}}, $_;
 877                         }
 878                 elsif (/^-framework$/)
 879                         {
 880                         push @{$useradd{LDLIBS}}, $_, shift(@argvcopy);
 881                         }
 882                 elsif (/^-L(.*)$/ or /^-Wl,/)
 883                         {
 884                         push @{$useradd{LDFLAGS}}, $_;
 885                         }
 886                 elsif (/^-rpath$/ or /^-R$/)
 887                         # -rpath is the OSF1 rpath flag
 888                         # -R is the old Solaris rpath flag
 889                         {
 890                         my $rpath = shift(@argvcopy) || "";
 891                         $rpath .= " " if $rpath ne "";
 892                         push @{$useradd{LDFLAGS}}, $_, $rpath;
 893                         }
 894                 elsif (/^-static$/)
 895                         {
 896                         push @{$useradd{LDFLAGS}}, $_;
 897                         }
 898                 elsif (/^-D(.*)$/)
 899                         {
 900                         push @{$useradd{CPPDEFINES}}, $1;
 901                         }
 902                 elsif (/^-I(.*)$/)
 903                         {
 904                         push @{$useradd{CPPINCLUDES}}, $1;
 905                         }
 906                 elsif (/^-Wp,$/)
 907                         {
 908                         push @{$useradd{CPPFLAGS}}, $1;
 909                         }
 910                 else    # common if (/^[-+]/), just pass down...
 911                         {
 912                         $_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
 913                         push @{$useradd{CFLAGS}}, $_;
 914                         push @{$useradd{CXXFLAGS}}, $_;
 915                         }
 916                 }
 917         else
 918                 {
 919                 die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
 920                 $target=$_;
 921                 }
 922         unless ($_ eq $target || /^no-/ || /^disable-/)
 923                 {
 924                 # "no-..." follows later after implied deactivations
 925                 # have been derived.  (Don't take this too seriously,
 926                 # we really only write OPTIONS to the Makefile out of
 927                 # nostalgia.)
 928
 929                 if ($config{options} eq "")
 930                         { $config{options} = $_; }
 931                 else
 932                         { $config{options} .= " ".$_; }
 933                 }
 934         }
 935
 936 if (defined($config{api}) && !exists $apitable->{$config{api}}) {
 937         die "***** Unsupported api compatibility level: $config{api}\n",
 938 }
 939
 940 if (keys %deprecated_options)
 941         {
 942         warn "***** Deprecated options: ",
 943                 join(", ", keys %deprecated_options), "\n";
 944         }
 945 if (keys %unsupported_options)
 946         {
 947         die "***** Unsupported options: ",
 948                 join(", ", keys %unsupported_options), "\n";
 949         }
 950
 951 # If any %useradd entry has been set, we must check that the "make
 952 # variables" haven't been set.  We start by checking of any %useradd entry
 953 # is set.
 954 if (grep { scalar @$_ > 0 } values %useradd) {
 955     # Hash of env / make variables names.  The possible values are:
 956     # 1 - "make vars"
 957     # 2 - %useradd entry set
 958     # 3 - both set
 959     my %detected_vars =
 960         map { my $v = 0;
 961               $v += 1 if $cmdvars{$_};
 962               $v += 2 if @{$useradd{$_}};
 963               $_ => $v }
 964         keys %useradd;
 965
 966     # If any of the corresponding "make variables" is set, we error
 967     if (grep { $_ & 1 } values %detected_vars) {
 968         my $names = join(', ', grep { $detected_vars{$_} > 0 }
 969                                sort keys %detected_vars);
 970         die <<"_____";
 971 ***** Mixing make variables and additional compiler/linker flags as
 972 ***** configure command line option is not permitted.
 973 ***** Affected make variables: $names
 974 _____
 975     }
 976 }
 977
 978 # Check through all supported command line variables to see if any of them
 979 # were set, and canonicalise the values we got.  If no compiler or linker
 980 # flag or anything else that affects %useradd was set, we also check the
 981 # environment for values.
 982 my $anyuseradd =
 983     grep { defined $_ && (ref $_ ne 'ARRAY' || @$_) } values %useradd;
 984 foreach (keys %user) {
 985     my $value = $cmdvars{$_};
 986     $value //= env($_) unless $anyuseradd;
 987     $value //=
 988         defined $user_synonyms{$_} ? $cmdvars{$user_synonyms{$_}} : undef;
 989     $value //= defined $user_synonyms{$_} ? env($user_synonyms{$_}) : undef
 990         unless $anyuseradd;
 991
 992     if (defined $value) {
 993         if (ref $user{$_} eq 'ARRAY') {
 994             $user{$_} = [ split /$list_separator_re/, $value ];
 995         } elsif (!defined $user{$_}) {
 996             $user{$_} = $value;
 997         }
 998     }
 999 }
1000
1001 if (grep { /-rpath\b/ } ($user{LDFLAGS} ? @{$user{LDFLAGS}} : ())
1002     && !$disabled{shared}
1003     && !($disabled{asan} && $disabled{msan} && $disabled{ubsan})) {
1004     die "***** Cannot simultaneously use -rpath, shared libraries, and\n",
1005         "***** any of asan, msan or ubsan\n";
1006 }
1007
1008 sub disable {
1009     my $disable_type = shift;
1010
1011     for (@_) {
1012         $disabled{$_} = $disable_type;
1013     }
1014
1015     my @tocheckfor = (@_ ? @_ : keys %disabled);
1016     while (@tocheckfor) {
1017         my %new_tocheckfor = ();
1018         my @cascade_copy = (@disable_cascades);
1019         while (@cascade_copy) {
1020             my ($test, $descendents) =
1021                 (shift @cascade_copy, shift @cascade_copy);
1022             if (ref($test) eq "CODE" ? $test->() : defined($disabled{$test})) {
1023                 foreach (grep { !defined($disabled{$_}) } @$descendents) {
1024                     $new_tocheckfor{$_} = 1; $disabled{$_} = "cascade";
1025                 }
1026             }
1027         }
1028         @tocheckfor = (keys %new_tocheckfor);
1029     }
1030 }
1031 disable();                     # First cascade run
1032
1033 our $die = sub { die @_; };
1034 if ($target eq "TABLE") {
1035     local $die = sub { warn @_; };
1036     foreach (sort keys %table) {
1037         print_table_entry($_, "TABLE");
1038     }
1039     exit 0;
1040 }
1041
1042 if ($target eq "LIST") {
1043     foreach (sort keys %table) {
1044         print $_,"\n" unless $table{$_}->{template};
1045     }
1046     exit 0;
1047 }
1048
1049 if ($target eq "HASH") {
1050     local $die = sub { warn @_; };
1051     print "%table = (\n";
1052     foreach (sort keys %table) {
1053         print_table_entry($_, "HASH");
1054     }
1055     exit 0;
1056 }
1057
1058 print "Configuring OpenSSL version $config{full_version} ";
1059 print "for target $target\n";
1060
1061 if (scalar(@seed_sources) == 0) {
1062     print "Using os-specific seed configuration\n";
1063     push @seed_sources, 'os';
1064 }
1065 if (scalar(grep { $_ eq 'none' } @seed_sources) > 0) {
1066     die "Cannot seed with none and anything else" if scalar(@seed_sources) > 1;
1067     warn <<_____ if scalar(@seed_sources) == 1;
1068
1069 ============================== WARNING ===============================
1070 You have selected the --with-rand-seed=none option, which effectively
1071 disables automatic reseeding of the OpenSSL random generator.
1072 All operations depending on the random generator such as creating keys
1073 will not work unless the random generator is seeded manually by the
1074 application.
1075
1076 Please read the 'Note on random number generation' section in the
1077 INSTALL instructions and the RAND_DRBG(7) manual page for more details.
1078 ============================== WARNING ===============================
1079
1080 _____
1081 }
1082 push @{$config{openssl_feature_defines}},
1083      map { (my $x = $_) =~ tr|[\-a-z]|[_A-Z]|; "OPENSSL_RAND_SEED_$x" }
1084         @seed_sources;
1085
1086 # Backward compatibility?
1087 if ($target =~ m/^CygWin32(-.*)$/) {
1088     $target = "Cygwin".$1;
1089 }
1090
1091 # Support for legacy targets having a name starting with 'debug-'
1092 my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
1093 if ($d) {
1094     $config{build_type} = "debug";
1095
1096     # If we do not find debug-foo in the table, the target is set to foo.
1097     if (!$table{$target}) {
1098         $target = $t;
1099     }
1100 }
1101
1102 &usage if !$table{$target} || $table{$target}->{template};
1103
1104 $config{target} = $target;
1105 my %target = resolve_config($target);
1106
1107 foreach (keys %target_attr_translate) {
1108     $target{$target_attr_translate{$_}} = $target{$_}
1109         if $target{$_};
1110     delete $target{$_};
1111 }
1112
1113 %target = ( %{$table{DEFAULTS}}, %target );
1114
1115 my %conf_files = map { $_ => 1 } (@{$target{_conf_fname_int}});
1116 $config{conf_files} = [ sort keys %conf_files ];
1117
1118 # Using sub disable within these loops may prove fragile, so we run
1119 # a cascade afterwards
1120 foreach my $feature (@{$target{disable}}) {
1121     if (exists $deprecated_disablables{$feature}) {
1122         warn "***** config $target disables deprecated feature $feature\n";
1123     } elsif (!grep { $feature eq $_ } @disablables) {
1124         die "***** config $target disables unknown feature $feature\n";
1125     }
1126     $disabled{$feature} = 'config';
1127 }
1128 foreach my $feature (@{$target{enable}}) {
1129     if ("default" eq ($disabled{$feature} // "")) {
1130         if (exists $deprecated_disablables{$feature}) {
1131             warn "***** config $target enables deprecated feature $feature\n";
1132         } elsif (!grep { $feature eq $_ } @disablables) {
1133             die "***** config $target enables unknown feature $feature\n";
1134         }
1135         delete $disabled{$feature};
1136     }
1137 }
1138 disable();                      # Run a cascade now
1139
1140 $target{CXXFLAGS}//=$target{CFLAGS} if $target{CXX};
1141 $target{cxxflags}//=$target{cflags} if $target{CXX};
1142 $target{exe_extension}=".exe" if ($config{target} eq "DJGPP");
1143 $target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
1144
1145 # Fill %config with values from %user, and in case those are undefined or
1146 # empty, use values from %target (acting as a default).
1147 foreach (keys %user) {
1148     my $ref_type = ref $user{$_};
1149
1150     # Temporary function.  Takes an intended ref type (empty string or "ARRAY")
1151     # and a value that's to be coerced into that type.
1152     my $mkvalue = sub {
1153         my $type = shift;
1154         my $value = shift;
1155         my $undef_p = shift;
1156
1157         die "Too many arguments for \$mkvalue" if @_;
1158
1159         while (ref $value eq 'CODE') {
1160             $value = $value->();
1161         }
1162
1163         if ($type eq 'ARRAY') {
1164             return undef unless defined $value;
1165             return undef if ref $value ne 'ARRAY' && !$value;
1166             return undef if ref $value eq 'ARRAY' && !@$value;
1167             return [ $value ] unless ref $value eq 'ARRAY';
1168         }
1169         return undef unless $value;
1170         return $value;
1171     };
1172
1173     $config{$_} =
1174         $mkvalue->($ref_type, $user{$_})
1175         || $mkvalue->($ref_type, $target{$_});
1176     delete $config{$_} unless defined $config{$_};
1177 }
1178
1179 # Finish up %config by appending things the user gave us on the command line
1180 # apart from "make variables"
1181 foreach (keys %useradd) {
1182     # The must all be lists, so we assert that here
1183     die "internal error: \$useradd{$_} isn't an ARRAY\n"
1184         unless ref $useradd{$_} eq 'ARRAY';
1185
1186     if (defined $config{$_}) {
1187         push @{$config{$_}}, @{$useradd{$_}};
1188     } else {
1189         $config{$_} = [ @{$useradd{$_}} ];
1190     }
1191 }
1192 # At this point, we can forget everything about %user and %useradd,
1193 # because it's now all been merged into the corresponding $config entry
1194
1195 # Allow overriding the build file name
1196 $config{build_file} = env('BUILDFILE') || $target{build_file} || "Makefile";
1197
1198 ######################################################################
1199 # Build up information for skipping certain directories depending on disabled
1200 # features, as well as setting up macros for disabled features.
1201
1202 # This is a tentative database of directories to skip.  Some entries may not
1203 # correspond to anything real, but that's ok, they will simply be ignored.
1204 # The actual processing of these entries is done in the build.info lookup
1205 # loop further down.
1206 #
1207 # The key is a Unix formated path in the source tree, the value is an index
1208 # into %disabled_info, so any existing path gets added to a corresponding
1209 # 'skipped' entry in there with the list of skipped directories.
1210 my %skipdir = ();
1211 my %disabled_info = ();         # For configdata.pm
1212 foreach my $what (sort keys %disabled) {
1213     # There are deprecated disablables that translate to themselves.
1214     # They cause disabling cascades, but should otherwise not regiter.
1215     next if $deprecated_disablables{$what};
1216
1217     $config{options} .= " no-$what";
1218
1219     if (!grep { $what eq $_ } ( 'buildtest-c++', 'fips', 'threads', 'shared',
1220                                 'module', 'pic', 'dynamic-engine', 'makedepend',
1221                                 'zlib-dynamic', 'zlib', 'sse2', 'legacy' )) {
1222         (my $WHAT = uc $what) =~ s|-|_|g;
1223         my $skipdir = $what;
1224
1225         # fix-up crypto/directory name(s)
1226         $skipdir = "ripemd" if $what eq "rmd160";
1227         $skipdir = "whrlpool" if $what eq "whirlpool";
1228
1229         my $macro = $disabled_info{$what}->{macro} = "OPENSSL_NO_$WHAT";
1230         push @{$config{openssl_feature_defines}}, $macro;
1231
1232         $skipdir{engines} = $what if $what eq 'engine';
1233         $skipdir{"crypto/$skipdir"} = $what
1234             unless $what eq 'async' || $what eq 'err';
1235     }
1236 }
1237
1238 # Make sure build_scheme is consistent.
1239 $target{build_scheme} = [ $target{build_scheme} ]
1240     if ref($target{build_scheme}) ne "ARRAY";
1241
1242 my ($builder, $builder_platform, @builder_opts) =
1243     @{$target{build_scheme}};
1244
1245 foreach my $checker (($builder_platform."-".$target{build_file}."-checker.pm",
1246                       $builder_platform."-checker.pm")) {
1247     my $checker_path = catfile($srcdir, "Configurations", $checker);
1248     if (-f $checker_path) {
1249         my $fn = $ENV{CONFIGURE_CHECKER_WARN}
1250             ? sub { warn $@; } : sub { die $@; };
1251         if (! do $checker_path) {
1252             if ($@) {
1253                 $fn->($@);
1254             } elsif ($!) {
1255                 $fn->($!);
1256             } else {
1257                 $fn->("The detected tools didn't match the platform\n");
1258             }
1259         }
1260         last;
1261     }
1262 }
1263
1264 push @{$config{defines}}, "NDEBUG"    if $config{build_type} eq "release";
1265
1266 if ($target =~ /^mingw/ && `$config{CC} --target-help 2>&1` =~ m/-mno-cygwin/m)
1267         {
1268         push @{$config{cflags}}, "-mno-cygwin";
1269         push @{$config{cxxflags}}, "-mno-cygwin" if $config{CXX};
1270         push @{$config{shared_ldflag}}, "-mno-cygwin";
1271         }
1272
1273 if ($target =~ /linux.*-mips/ && !$disabled{asm}
1274         && !grep { $_ !~ /-m(ips|arch=)/ } (@{$config{CFLAGS}})) {
1275         # minimally required architecture flags for assembly modules
1276         my $value;
1277         $value = '-mips2' if ($target =~ /mips32/);
1278         $value = '-mips3' if ($target =~ /mips64/);
1279         unshift @{$config{cflags}}, $value;
1280         unshift @{$config{cxxflags}}, $value if $config{CXX};
1281 }
1282
1283 # If threads aren't disabled, check how possible they are
1284 unless ($disabled{threads}) {
1285     if ($auto_threads) {
1286         # Enabled by default, disable it forcibly if unavailable
1287         if ($target{thread_scheme} eq "(unknown)") {
1288             disable("unavailable", 'threads');
1289         }
1290     } else {
1291         # The user chose to enable threads explicitly, let's see
1292         # if there's a chance that's possible
1293         if ($target{thread_scheme} eq "(unknown)") {
1294             # If the user asked for "threads" and we don't have internal
1295             # knowledge how to do it, [s]he is expected to provide any
1296             # system-dependent compiler options that are necessary.  We
1297             # can't truly check that the given options are correct, but
1298             # we expect the user to know what [s]He is doing.
1299             if (!@{$config{CFLAGS}} && !@{$config{CPPDEFINES}}) {
1300                 die "You asked for multi-threading support, but didn't\n"
1301                     ,"provide any system-specific compiler options\n";
1302             }
1303         }
1304     }
1305 }
1306
1307 # Find out if clang's sanitizers have been enabled with -fsanitize
1308 # flags and ensure that the corresponding %disabled elements area
1309 # removed to reflect that the sanitizers are indeed enabled.
1310 my %detected_sanitizers = ();
1311 foreach (grep /^-fsanitize=/, @{$config{CFLAGS} || []}) {
1312     (my $checks = $_) =~ s/^-fsanitize=//;
1313     foreach (split /,/, $checks) {
1314         my $d = { address       => 'asan',
1315                   undefined     => 'ubsan',
1316                   memory        => 'msan' } -> {$_};
1317         next unless defined $d;
1318
1319         $detected_sanitizers{$d} = 1;
1320         if (defined $disabled{$d}) {
1321             die "***** Conflict between disabling $d and enabling $_ sanitizer"
1322                 if $disabled{$d} ne "default";
1323             delete $disabled{$d};
1324         }
1325     }
1326 }
1327
1328 # If threads still aren't disabled, add a C macro to ensure the source
1329 # code knows about it.  Any other flag is taken care of by the configs.
1330 unless($disabled{threads}) {
1331     push @{$config{openssl_feature_defines}}, "OPENSSL_THREADS";
1332 }
1333
1334 # With "deprecated" disable all deprecated features.
1335 if (defined($disabled{"deprecated"})) {
1336         $config{api} = $maxapi;
1337 }
1338
1339 my $no_shared_warn=0;
1340 if ($target{shared_target} eq "")
1341         {
1342         $no_shared_warn = 1
1343             if (!$disabled{shared} || !$disabled{"dynamic-engine"});
1344         disable('no-shared-target', 'pic');
1345         }
1346
1347 if ($disabled{"dynamic-engine"}) {
1348         push @{$config{openssl_feature_defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
1349         $config{dynamic_engines} = 0;
1350 } else {
1351         push @{$config{openssl_feature_defines}}, "OPENSSL_NO_STATIC_ENGINE";
1352         $config{dynamic_engines} = 1;
1353 }
1354
1355 unless ($disabled{asan} || defined $detected_sanitizers{asan}) {
1356     push @{$config{cflags}}, "-fsanitize=address";
1357 }
1358
1359 unless ($disabled{ubsan} || defined $detected_sanitizers{ubsan}) {
1360     # -DPEDANTIC or -fnosanitize=alignment may also be required on some
1361     # platforms.
1362     push @{$config{cflags}}, "-fsanitize=undefined", "-fno-sanitize-recover=all";
1363 }
1364
1365 unless ($disabled{msan} || defined $detected_sanitizers{msan}) {
1366   push @{$config{cflags}}, "-fsanitize=memory";
1367 }
1368
1369 unless ($disabled{"fuzz-libfuzzer"} && $disabled{"fuzz-afl"}
1370         && $disabled{asan} && $disabled{ubsan} && $disabled{msan}) {
1371     push @{$config{cflags}}, "-fno-omit-frame-pointer", "-g";
1372     push @{$config{cxxflags}}, "-fno-omit-frame-pointer", "-g" if $config{CXX};
1373 }
1374 #
1375 # Platform fix-ups
1376 #
1377
1378 # This saves the build files from having to check
1379 if ($disabled{pic})
1380         {
1381         foreach (qw(shared_cflag shared_cxxflag shared_cppflag
1382                     shared_defines shared_includes shared_ldflag
1383                     module_cflags module_cxxflags module_cppflags
1384                     module_defines module_includes module_lflags))
1385                 {
1386                 delete $config{$_};
1387                 $target{$_} = "";
1388                 }
1389         }
1390 else
1391         {
1392         push @{$config{lib_defines}}, "OPENSSL_PIC";
1393         }
1394
1395 if ($target{sys_id} ne "")
1396         {
1397         push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
1398         }
1399
1400 unless ($disabled{asm}) {
1401     $target{cpuid_asm_src}=$table{DEFAULTS}->{cpuid_asm_src} if ($config{processor} eq "386");
1402     if ($target{cpuid_asm_src} ne "mem_clr.c") {
1403         push @{$config{lib_defines}}, "OPENSSL_CPUID_OBJ";
1404         push @{$config{module_defines}}, "OPENSSL_CPUID_OBJ";
1405     }
1406
1407     $target{bn_asm_src} =~ s/\w+-gf2m.c// if (defined($disabled{ec2m}));
1408
1409     # bn-586 is the only one implementing bn_*_part_words
1410     push @{$config{lib_defines}}, "OPENSSL_BN_ASM_PART_WORDS" if ($target{bn_asm_src} =~ /bn-586/);
1411     push @{$config{lib_defines}}, "OPENSSL_IA32_SSE2" if (!$disabled{sse2} && $target{bn_asm_src} =~ /86/);
1412
1413     push @{$config{lib_defines}}, "OPENSSL_BN_ASM_MONT" if ($target{bn_asm_src} =~ /-mont/);
1414     push @{$config{lib_defines}}, "OPENSSL_BN_ASM_MONT5" if ($target{bn_asm_src} =~ /-mont5/);
1415     push @{$config{lib_defines}}, "OPENSSL_BN_ASM_GF2m" if ($target{bn_asm_src} =~ /-gf2m/);
1416     push @{$config{lib_defines}}, "BN_DIV3W" if ($target{bn_asm_src} =~ /-div3w/);
1417
1418     if ($target{sha1_asm_src}) {
1419         push @{$config{lib_defines}}, "SHA1_ASM"   if ($target{sha1_asm_src} =~ /sx86/ || $target{sha1_asm_src} =~ /sha1/);
1420         push @{$config{lib_defines}}, "SHA256_ASM" if ($target{sha1_asm_src} =~ /sha256/);
1421         push @{$config{lib_defines}}, "SHA512_ASM" if ($target{sha1_asm_src} =~ /sha512/);
1422     }
1423     if ($target{keccak1600_asm_src} ne $table{DEFAULTS}->{keccak1600_asm_src}) {
1424         push @{$config{lib_defines}}, "KECCAK1600_ASM";
1425     }
1426     if ($target{rc4_asm_src} ne $table{DEFAULTS}->{rc4_asm_src}) {
1427         push @{$config{lib_defines}}, "RC4_ASM";
1428     }
1429     if ($target{md5_asm_src}) {
1430         push @{$config{lib_defines}}, "MD5_ASM";
1431     }
1432     $target{cast_asm_src}=$table{DEFAULTS}->{cast_asm_src} unless $disabled{pic}; # CAST assembler is not PIC
1433     if ($target{rmd160_asm_src}) {
1434         push @{$config{lib_defines}}, "RMD160_ASM";
1435     }
1436     if ($target{aes_asm_src}) {
1437         if ($target{aes_asm_src} =~ m/\baes-/) {
1438             push @{$config{lib_defines}}, "AES_ASM";
1439             push @{$config{module_defines}}, "AES_ASM";
1440         }
1441         # aes-ctr.fake is not a real file, only indication that assembler
1442         # module implements AES_ctr32_encrypt...
1443         if ($target{aes_asm_src} =~ s/\s*aes-ctr\.fake//) {
1444             push @{$config{lib_defines}}, "AES_CTR_ASM";
1445             push @{$config{module_defines}}, "AES_CTR_ASM";
1446         }
1447         # aes-xts.fake indicates presence of AES_xts_[en|de]crypt...
1448         if ($target{aes_asm_src} =~ s/\s*aes-xts\.fake//) {
1449             push @{$config{lib_defines}}, "AES_XTS_ASM";
1450             push @{$config{module_defines}}, "AES_XTS_ASM";
1451         }
1452         $target{aes_asm_src} =~ s/\s*(vpaes|aesni)-x86\.s//g if ($disabled{sse2});
1453         if ($target{aes_asm_src} =~ m/vpaes/) {
1454             push @{$config{lib_defines}}, "VPAES_ASM";
1455             push @{$config{module_defines}}, "VPAES_ASM";
1456         }
1457         if ($target{aes_asm_src} =~ m/bsaes/) {
1458             push @{$config{lib_defines}}, "BSAES_ASM";
1459             push @{$config{module_defines}}, "BSAES_ASM";
1460         }
1461     }
1462     if ($target{wp_asm_src} =~ /mmx/) {
1463         if ($config{processor} eq "386") {
1464             $target{wp_asm_src}=$table{DEFAULTS}->{wp_asm_src};
1465         } elsif (!$disabled{"whirlpool"}) {
1466             push @{$config{lib_defines}}, "WHIRLPOOL_ASM";
1467         }
1468     }
1469     if ($target{modes_asm_src} =~ /ghash-/) {
1470         push @{$config{lib_defines}}, "GHASH_ASM";
1471     }
1472     if ($target{ec_asm_src} =~ /ecp_nistz256/) {
1473         push @{$config{lib_defines}}, "ECP_NISTZ256_ASM";
1474     }
1475     if ($target{ec_asm_src} =~ /x25519/) {
1476         push @{$config{lib_defines}}, "X25519_ASM";
1477     }
1478     if ($target{padlock_asm_src} ne $table{DEFAULTS}->{padlock_asm_src}) {
1479         push @{$config{dso_defines}}, "PADLOCK_ASM";
1480     }
1481     if ($target{poly1305_asm_src} ne "") {
1482         push @{$config{lib_defines}}, "POLY1305_ASM";
1483     }
1484 }
1485
1486 my %predefined_C = compiler_predefined($config{CROSS_COMPILE}.$config{CC});
1487 my %predefined_CXX = $config{CXX}
1488     ? compiler_predefined($config{CROSS_COMPILE}.$config{CXX})
1489     : ();
1490
1491 # Check for makedepend capabilities.
1492 if (!$disabled{makedepend}) {
1493     if ($config{target} =~ /^(VC|vms)-/) {
1494         # For VC- and vms- targets, there's nothing more to do here.  The
1495         # functionality is hard coded in the corresponding build files for
1496         # cl (Windows) and CC/DECC (VMS).
1497     } elsif (($predefined_C{__GNUC__} // -1) >= 3
1498              && !($predefined_C{__APPLE_CC__} && !$predefined_C{__clang__})) {
1499         # We know that GNU C version 3 and up as well as all clang
1500         # versions support dependency generation, but Xcode did not
1501         # handle $cc -M before clang support (but claims __GNUC__ = 3)
1502         $config{makedepprog} = "\$(CROSS_COMPILE)$config{CC}";
1503     } else {
1504         # In all other cases, we look for 'makedepend', and disable the
1505         # capability if not found.
1506         $config{makedepprog} = which('makedepend');
1507         disable('unavailable', 'makedepend') unless $config{makedepprog};
1508     }
1509 }
1510
1511 if (!$disabled{asm} && !$predefined_C{__MACH__} && $^O ne 'VMS') {
1512     # probe for -Wa,--noexecstack option...
1513     if ($predefined_C{__clang__}) {
1514         # clang has builtin assembler, which doesn't recognize --help,
1515         # but it apparently recognizes the option in question on all
1516         # supported platforms even when it's meaningless. In other words
1517         # probe would fail, but probed option always accepted...
1518         push @{$config{cflags}}, "-Wa,--noexecstack", "-Qunused-arguments";
1519     } else {
1520         my $cc = $config{CROSS_COMPILE}.$config{CC};
1521         open(PIPE, "$cc -Wa,--help -c -o null.$$.o -x assembler /dev/null 2>&1 |");
1522         while(<PIPE>) {
1523             if (m/--noexecstack/) {
1524                 push @{$config{cflags}}, "-Wa,--noexecstack";
1525                 last;
1526             }
1527         }
1528         close(PIPE);
1529         unlink("null.$$.o");
1530     }
1531 }
1532
1533 # Deal with bn_ops ###################################################
1534
1535 $config{bn_ll}                  =0;
1536 $config{export_var_as_fn}       =0;
1537 my $def_int="unsigned int";
1538 $config{rc4_int}                =$def_int;
1539 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
1540
1541 my $count = 0;
1542 foreach (sort split(/\s+/,$target{bn_ops})) {
1543     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
1544     $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
1545     $config{bn_ll}=1                            if $_ eq 'BN_LLONG';
1546     $config{rc4_int}="unsigned char"            if $_ eq 'RC4_CHAR';
1547     ($config{b64l},$config{b64},$config{b32})
1548         =(0,1,0)                                if $_ eq 'SIXTY_FOUR_BIT';
1549     ($config{b64l},$config{b64},$config{b32})
1550         =(1,0,0)                                if $_ eq 'SIXTY_FOUR_BIT_LONG';
1551     ($config{b64l},$config{b64},$config{b32})
1552         =(0,0,1)                                if $_ eq 'THIRTY_TWO_BIT';
1553 }
1554 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
1555     if $count > 1;
1556
1557
1558 # Hack cflags for better warnings (dev option) #######################
1559
1560 # "Stringify" the C and C++ flags string.  This permits it to be made part of
1561 # a string and works as well on command lines.
1562 $config{cflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
1563                         @{$config{cflags}} ];
1564 $config{cxxflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
1565                           @{$config{cxxflags}} ] if $config{CXX};
1566
1567 $config{openssl_api_defines} = [
1568     "OPENSSL_MIN_API=".($apitable->{$config{api} // ""} // -1)
1569 ];
1570
1571 my @strict_warnings_collection=();
1572 if ($strict_warnings)
1573         {
1574         my $wopt;
1575         my $gccver = $predefined_C{__GNUC__} // -1;
1576
1577         warn "WARNING --strict-warnings requires gcc[>=4] or gcc-alike"
1578             unless $gccver >= 4;
1579         push @strict_warnings_collection, @gcc_devteam_warn;
1580         push @strict_warnings_collection, @clang_devteam_warn
1581             if (defined($predefined_C{__clang__}));
1582         }
1583
1584 if (grep { $_ eq '-static' } @{$config{LDFLAGS}}) {
1585     disable('static', 'pic', 'threads');
1586 }
1587
1588 $config{CFLAGS} = [ map { $_ eq '--ossl-strict-warnings'
1589                               ? @strict_warnings_collection
1590                               : ( $_ ) }
1591                     @{$config{CFLAGS}} ];
1592
1593 unless ($disabled{"crypto-mdebug-backtrace"})
1594         {
1595         foreach my $wopt (split /\s+/, $memleak_devteam_backtrace)
1596                 {
1597                 push @{$config{cflags}}, $wopt
1598                         unless grep { $_ eq $wopt } @{$config{cflags}};
1599                 }
1600         if ($target =~ /^BSD-/)
1601                 {
1602                 push @{$config{ex_libs}}, "-lexecinfo";
1603                 }
1604         }
1605
1606 unless ($disabled{afalgeng}) {
1607     $config{afalgeng}="";
1608     if (grep { $_ eq 'afalgeng' } @{$target{enable}}) {
1609         my $minver = 4*10000 + 1*100 + 0;
1610         if ($config{CROSS_COMPILE} eq "") {
1611             my $verstr = `uname -r`;
1612             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
1613             ($mi2) = $mi2 =~ /(\d+)/;
1614             my $ver = $ma*10000 + $mi1*100 + $mi2;
1615             if ($ver < $minver) {
1616                 disable('too-old-kernel', 'afalgeng');
1617             } else {
1618                 push @{$config{engdirs}}, "afalg";
1619             }
1620         } else {
1621             disable('cross-compiling', 'afalgeng');
1622         }
1623     } else {
1624         disable('not-linux', 'afalgeng');
1625     }
1626 }
1627
1628 push @{$config{openssl_feature_defines}}, "OPENSSL_NO_AFALGENG" if ($disabled{afalgeng});
1629
1630 unless ($disabled{ktls}) {
1631     $config{ktls}="";
1632     if ($target =~ m/^linux/) {
1633         my $usr = "/usr/$config{cross_compile_prefix}";
1634         chop($usr);
1635         if ($config{cross_compile_prefix} eq "") {
1636             $usr = "/usr";
1637         }
1638         my $minver = (4 << 16) + (13 << 8) + 0;
1639         my @verstr = split(" ",`cat $usr/include/linux/version.h | grep LINUX_VERSION_CODE`);
1640
1641         if ($verstr[2] < $minver) {
1642             disable('too-old-kernel', 'ktls');
1643         }
1644     } else {
1645         disable('not-linux', 'ktls');
1646     }
1647 }
1648
1649 push @{$config{openssl_other_defines}}, "OPENSSL_NO_KTLS" if ($disabled{ktls});
1650
1651 # Get the extra flags used when building shared libraries and modules.  We
1652 # do this late because some of them depend on %disabled.
1653
1654 # Make the flags to build DSOs the same as for shared libraries unless they
1655 # are already defined
1656 $target{module_cflags} = $target{shared_cflag} unless defined $target{module_cflags};
1657 $target{module_cxxflags} = $target{shared_cxxflag} unless defined $target{module_cxxflags};
1658 $target{module_ldflags} = $target{shared_ldflag} unless defined $target{module_ldflags};
1659 {
1660     my $shared_info_pl =
1661         catfile(dirname($0), "Configurations", "shared-info.pl");
1662     my %shared_info = read_eval_file($shared_info_pl);
1663     push @{$target{_conf_fname_int}}, $shared_info_pl;
1664     my $si = $target{shared_target};
1665     while (ref $si ne "HASH") {
1666         last if ! defined $si;
1667         if (ref $si eq "CODE") {
1668             $si = $si->();
1669         } else {
1670             $si = $shared_info{$si};
1671         }
1672     }
1673
1674     # Some of the 'shared_target' values don't have any entries in
1675     # %shared_info.  That's perfectly fine, AS LONG AS the build file
1676     # template knows how to handle this.  That is currently the case for
1677     # Windows and VMS.
1678     if (defined $si) {
1679         # Just as above, copy certain shared_* attributes to the corresponding
1680         # module_ attribute unless the latter is already defined
1681         $si->{module_cflags} = $si->{shared_cflag} unless defined $si->{module_cflags};
1682         $si->{module_cxxflags} = $si->{shared_cxxflag} unless defined $si->{module_cxxflags};
1683         $si->{module_ldflags} = $si->{shared_ldflag} unless defined $si->{module_ldflags};
1684         foreach (sort keys %$si) {
1685             $target{$_} = defined $target{$_}
1686                 ? add($si->{$_})->($target{$_})
1687                 : $si->{$_};
1688         }
1689     }
1690 }
1691
1692 # ALL MODIFICATIONS TO %disabled, %config and %target MUST BE DONE FROM HERE ON
1693
1694 # If we use the unified build, collect information from build.info files
1695 my %unified_info = ();
1696
1697 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
1698 if ($builder eq "unified") {
1699     use with_fallback qw(Text::Template);
1700
1701     sub cleandir {
1702         my $base = shift;
1703         my $dir = shift;
1704         my $relativeto = shift || ".";
1705
1706         $dir = catdir($base,$dir) unless isabsolute($dir);
1707
1708         # Make sure the directories we're building in exists
1709         mkpath($dir);
1710
1711         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
1712         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
1713         return $res;
1714     }
1715
1716     sub cleanfile {
1717         my $base = shift;
1718         my $file = shift;
1719         my $relativeto = shift || ".";
1720
1721         $file = catfile($base,$file) unless isabsolute($file);
1722
1723         my $d = dirname($file);
1724         my $f = basename($file);
1725
1726         # Make sure the directories we're building in exists
1727         mkpath($d);
1728
1729         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
1730         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
1731         return $res;
1732     }
1733
1734     # Store the name of the template file we will build the build file from
1735     # in %config.  This may be useful for the build file itself.
1736     my @build_file_template_names =
1737         ( $builder_platform."-".$target{build_file}.".tmpl",
1738           $target{build_file}.".tmpl" );
1739     my @build_file_templates = ();
1740
1741     # First, look in the user provided directory, if given
1742     if (defined env($local_config_envname)) {
1743         @build_file_templates =
1744             map {
1745                 if ($^O eq 'VMS') {
1746                     # VMS environment variables are logical names,
1747                     # which can be used as is
1748                     $local_config_envname . ':' . $_;
1749                 } else {
1750                     catfile(env($local_config_envname), $_);
1751                 }
1752             }
1753             @build_file_template_names;
1754     }
1755     # Then, look in our standard directory
1756     push @build_file_templates,
1757         ( map { cleanfile($srcdir, catfile("Configurations", $_), $blddir) }
1758           @build_file_template_names );
1759
1760     my $build_file_template;
1761     for $_ (@build_file_templates) {
1762         $build_file_template = $_;
1763         last if -f $build_file_template;
1764
1765         $build_file_template = undef;
1766     }
1767     if (!defined $build_file_template) {
1768         die "*** Couldn't find any of:\n", join("\n", @build_file_templates), "\n";
1769     }
1770     $config{build_file_templates}
1771       = [ cleanfile($srcdir, catfile("Configurations", "common0.tmpl"),
1772                     $blddir),
1773           $build_file_template,
1774           cleanfile($srcdir, catfile("Configurations", "common.tmpl"),
1775                     $blddir) ];
1776
1777     my @build_dirs = ( [ ] );   # current directory
1778
1779     $config{build_infos} = [ ];
1780
1781     my %ordinals = ();
1782     while (@build_dirs) {
1783         my @curd = @{shift @build_dirs};
1784         my $sourced = catdir($srcdir, @curd);
1785         my $buildd = catdir($blddir, @curd);
1786
1787         my $unixdir = join('/', @curd);
1788         if (exists $skipdir{$unixdir}) {
1789             my $what = $skipdir{$unixdir};
1790             push @{$disabled_info{$what}->{skipped}}, catdir(@curd);
1791             next;
1792         }
1793
1794         mkpath($buildd);
1795
1796         my $f = 'build.info';
1797         # The basic things we're trying to build
1798         my @programs = ();
1799         my @libraries = ();
1800         my @modules = ();
1801         my @scripts = ();
1802
1803         my %attributes = ();
1804         my %sources = ();
1805         my %shared_sources = ();
1806         my %includes = ();
1807         my %defines = ();
1808         my %depends = ();
1809         my %generate = ();
1810
1811         # We want to detect configdata.pm in the source tree, so we
1812         # don't use it if the build tree is different.
1813         my $src_configdata = cleanfile($srcdir, "configdata.pm", $blddir);
1814
1815         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
1816         my $template =
1817             Text::Template->new(TYPE => 'FILE',
1818                                 SOURCE => catfile($sourced, $f),
1819                                 PREPEND => qq{use lib "$FindBin::Bin/util/perl";});
1820         die "Something went wrong with $sourced/$f: $!\n" unless $template;
1821         my @text =
1822             split /^/m,
1823             $template->fill_in(HASH => { config => \%config,
1824                                          target => \%target,
1825                                          disabled => \%disabled,
1826                                          withargs => \%withargs,
1827                                          builddir => abs2rel($buildd, $blddir),
1828                                          sourcedir => abs2rel($sourced, $blddir),
1829                                          buildtop => abs2rel($blddir, $blddir),
1830                                          sourcetop => abs2rel($srcdir, $blddir) },
1831                                DELIMITERS => [ "{-", "-}" ]);
1832
1833         # The top item of this stack has the following values
1834         # -2 positive already run and we found ELSE (following ELSIF should fail)
1835         # -1 positive already run (skip until ENDIF)
1836         # 0 negatives so far (if we're at a condition, check it)
1837         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
1838         # 2 positive ELSE (following ELSIF should fail)
1839         my @skip = ();
1840         collect_information(
1841             collect_from_array([ @text ],
1842                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
1843                                                 $l1 =~ s/\\$//; $l1.$l2 }),
1844             # Info we're looking for
1845             qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
1846             => sub {
1847                 if (! @skip || $skip[$#skip] > 0) {
1848                     push @skip, !! $1;
1849                 } else {
1850                     push @skip, -1;
1851                 }
1852             },
1853             qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
1854             => sub { die "ELSIF out of scope" if ! @skip;
1855                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
1856                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
1857                      $skip[$#skip] = !! $1
1858                          if $skip[$#skip] == 0; },
1859             qr/^\s*ELSE\s*$/
1860             => sub { die "ELSE out of scope" if ! @skip;
1861                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
1862                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
1863             qr/^\s*ENDIF\s*$/
1864             => sub { die "ENDIF out of scope" if ! @skip;
1865                      pop @skip; },
1866             qr/^\s*SUBDIRS\s*=\s*(.*)\s*$/
1867             => sub {
1868                 if (!@skip || $skip[$#skip] > 0) {
1869                     foreach (tokenize($1)) {
1870                         push @build_dirs, [ @curd, splitdir($_, 1) ];
1871                     }
1872                 }
1873             },
1874             qr/^\s*PROGRAMS(?:{([\w=]+(?:\s*,\s*[\w=]+)*)})?\s*=\s*(.*)\s*$/
1875             => sub {
1876                 if (!@skip || $skip[$#skip] > 0) {
1877                     my @a = tokenize($1, qr|\s*,\s*|);
1878                     my @p = tokenize($2);
1879                     push @programs, @p;
1880                     foreach my $a (@a) {
1881                         my $ak = $a;
1882                         my $av = 1;
1883                         if ($a =~ m|^(.*?)\s*=\s*(.*?)$|) {
1884                             $ak = $1;
1885                             $av = $2;
1886                         }
1887                         foreach my $p (@p) {
1888                             $attributes{$p}->{$ak} = $av;
1889                         }
1890                     }
1891                 }
1892             },
1893             qr/^\s*LIBS(?:{([\w=]+(?:\s*,\s*[\w=]+)*)})?\s*=\s*(.*)\s*$/
1894             => sub {
1895                 if (!@skip || $skip[$#skip] > 0) {
1896                     my @a = tokenize($1, qr|\s*,\s*|);
1897                     my @l = tokenize($2);
1898                     push @libraries, @l;
1899                     foreach my $a (@a) {
1900                         my $ak = $a;
1901                         my $av = 1;
1902                         if ($a =~ m|^(.*?)\s*=\s*(.*?)$|) {
1903                             $ak = $1;
1904                             $av = $2;
1905                         }
1906                         foreach my $l (@l) {
1907                             $attributes{$l}->{$ak} = $av;
1908                         }
1909                     }
1910                 }
1911             },
1912             qr/^\s*MODULES(?:{([\w=]+(?:\s*,\s*[\w=]+)*)})?\s*=\s*(.*)\s*$/
1913             => sub {
1914                 if (!@skip || $skip[$#skip] > 0) {
1915                     my @a = tokenize($1, qr|\s*,\s*|);
1916                     my @m = tokenize($2);
1917                     push @modules, @m;
1918                     foreach my $a (@a) {
1919                         my $ak = $a;
1920                         my $av = 1;
1921                         if ($a =~ m|^(.*?)\s*=\s*(.*?)$|) {
1922                             $ak = $1;
1923                             $av = $2;
1924                         }
1925                         foreach my $m (@m) {
1926                             $attributes{$m}->{$ak} = $av;
1927                         }
1928                     }
1929                 }
1930             },
1931             qr/^\s*SCRIPTS(?:{([\w=]+(?:\s*,\s*[\w=]+)*)})?\s*=\s*(.*)\s*$/
1932             => sub {
1933                 if (!@skip || $skip[$#skip] > 0) {
1934                     my @a = tokenize($1, qr|\s*,\s*|);
1935                     my @s = tokenize($2);
1936                     push @scripts, @s;
1937                     foreach my $a (@a) {
1938                         my $ak = $a;
1939                         my $av = 1;
1940                         if ($a =~ m|^(.*?)\s*=\s*(.*?)$|) {
1941                             $ak = $1;
1942                             $av = $2;
1943                         }
1944                         foreach my $s (@s) {
1945                             $attributes{$s}->{$ak} = $av;
1946                         }
1947                     }
1948                 }
1949             },
1950
1951             qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
1952             => sub { push @{$ordinals{$1}}, tokenize($2)
1953                          if !@skip || $skip[$#skip] > 0 },
1954             qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1955             => sub { push @{$sources{$1}}, tokenize($2)
1956                          if !@skip || $skip[$#skip] > 0 },
1957             qr/^\s*SHARED_SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1958             => sub { push @{$shared_sources{$1}}, tokenize($2)
1959                          if !@skip || $skip[$#skip] > 0 },
1960             qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1961             => sub { push @{$includes{$1}}, tokenize($2)
1962                          if !@skip || $skip[$#skip] > 0 },
1963             qr/^\s*DEFINE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1964             => sub { push @{$defines{$1}}, tokenize($2)
1965                          if !@skip || $skip[$#skip] > 0 },
1966             qr/^\s*DEPEND\[((?:\\.|[^\\\]])*)\]\s*=\s*(.*)\s*$/
1967             => sub { push @{$depends{$1}}, tokenize($2)
1968                          if !@skip || $skip[$#skip] > 0 },
1969             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1970             => sub { push @{$generate{$1}}, $2
1971                          if !@skip || $skip[$#skip] > 0 },
1972             qr/^\s*(?:#.*)?$/ => sub { },
1973             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
1974             "BEFORE" => sub {
1975                 if ($buildinfo_debug) {
1976                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
1977                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1978                 }
1979             },
1980             "AFTER" => sub {
1981                 if ($buildinfo_debug) {
1982                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1983                 }
1984             },
1985             );
1986         die "runaway IF?" if (@skip);
1987
1988         if (grep { defined $attributes{$_}->{engine} } keys %attributes
1989                 and !$config{dynamic_engines}) {
1990             die <<"EOF"
1991 ENGINES can only be used if configured with 'dynamic-engine'.
1992 This is usually a fault in a build.info file.
1993 EOF
1994         }
1995
1996         foreach (keys %attributes) {
1997             my $dest = $_;
1998             my $ddest = cleanfile($buildd, $_, $blddir);
1999             foreach (keys %{$attributes{$dest} // {}}) {
2000                 $unified_info{attributes}->{$ddest}->{$_} =
2001                     $attributes{$dest}->{$_};
2002             }
2003         }
2004
2005         {
2006             my %infos = ( programs  => [ @programs  ],
2007                           libraries => [ @libraries ],
2008                           modules   => [ @modules   ],
2009                           scripts   => [ @scripts   ] );
2010             foreach my $k (keys %infos) {
2011                 foreach (@{$infos{$k}}) {
2012                     my $item = cleanfile($buildd, $_, $blddir);
2013                     $unified_info{$k}->{$item} = 1;
2014                 }
2015             }
2016         }
2017
2018         # Check that we haven't defined any library as both shared and
2019         # explicitly static.  That is forbidden.
2020         my @doubles = ();
2021         foreach (grep /\.a$/, keys %{$unified_info{libraries}}) {
2022             (my $l = $_) =~ s/\.a$//;
2023             push @doubles, $l if defined $unified_info{libraries}->{$l};
2024         }
2025         die "these libraries are both explicitly static and shared:\n  ",
2026             join(" ", @doubles), "\n"
2027             if @doubles;
2028
2029         foreach (keys %sources) {
2030             my $dest = $_;
2031             my $ddest = cleanfile($buildd, $_, $blddir);
2032             foreach (@{$sources{$dest}}) {
2033                 my $s = cleanfile($sourced, $_, $blddir);
2034
2035                 # If it isn't in the source tree, we assume it's generated
2036                 # in the build tree
2037                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
2038                     $s = cleanfile($buildd, $_, $blddir);
2039                 }
2040                 # We recognise C++, C and asm files
2041                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2042                     my $o = $_;
2043                     $o =~ s/\.[csS]$/.o/; # C and assembler
2044                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2045                     $o = cleanfile($buildd, $o, $blddir);
2046                     $unified_info{sources}->{$ddest}->{$o} = -1;
2047                     $unified_info{sources}->{$o}->{$s} = -1;
2048                 } elsif ($s =~ /\.rc$/) {
2049                     # We also recognise resource files
2050                     my $o = $_;
2051                     $o =~ s/\.rc$/.res/; # Resource configuration
2052                     my $o = cleanfile($buildd, $o, $blddir);
2053                     $unified_info{sources}->{$ddest}->{$o} = -1;
2054                     $unified_info{sources}->{$o}->{$s} = -1;
2055                 } else {
2056                     $unified_info{sources}->{$ddest}->{$s} = 1;
2057                 }
2058             }
2059         }
2060
2061         foreach (keys %shared_sources) {
2062             my $dest = $_;
2063             my $ddest = cleanfile($buildd, $_, $blddir);
2064             foreach (@{$shared_sources{$dest}}) {
2065                 my $s = cleanfile($sourced, $_, $blddir);
2066
2067                 # If it isn't in the source tree, we assume it's generated
2068                 # in the build tree
2069                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
2070                     $s = cleanfile($buildd, $_, $blddir);
2071                 }
2072
2073                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2074                     # We recognise C++, C and asm files
2075                     my $o = $_;
2076                     $o =~ s/\.[csS]$/.o/; # C and assembler
2077                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2078                     $o = cleanfile($buildd, $o, $blddir);
2079                     $unified_info{shared_sources}->{$ddest}->{$o} = -1;
2080                     $unified_info{sources}->{$o}->{$s} = -1;
2081                 } elsif ($s =~ /\.rc$/) {
2082                     # We also recognise resource files
2083                     my $o = $_;
2084                     $o =~ s/\.rc$/.res/; # Resource configuration
2085                     my $o = cleanfile($buildd, $o, $blddir);
2086                     $unified_info{shared_sources}->{$ddest}->{$o} = -1;
2087                     $unified_info{sources}->{$o}->{$s} = -1;
2088                 } elsif ($s =~ /\.ld$/) {
2089                     # We also recognise linker scripts (or corresponding)
2090                     # We know they are generated files
2091                     my $ld = cleanfile($buildd, $_, $blddir);
2092                     $unified_info{shared_sources}->{$ddest}->{$ld} = 1;
2093                 } else {
2094                     die "unrecognised source file type for shared library: $s\n";
2095                 }
2096             }
2097         }
2098
2099         foreach (keys %generate) {
2100             my $dest = $_;
2101             my $ddest = cleanfile($buildd, $_, $blddir);
2102             die "more than one generator for $dest: "
2103                     ,join(" ", @{$generate{$_}}),"\n"
2104                     if scalar @{$generate{$_}} > 1;
2105             my @generator = split /\s+/, $generate{$dest}->[0];
2106             $generator[0] = cleanfile($sourced, $generator[0], $blddir),
2107             $unified_info{generate}->{$ddest} = [ @generator ];
2108         }
2109
2110         foreach (keys %depends) {
2111             my $dest = $_;
2112             my $ddest = $dest eq "" ? "" : cleanfile($sourced, $_, $blddir);
2113
2114             # If the destination doesn't exist in source, it can only be
2115             # a generated file in the build tree.
2116             if ($ddest ne "" && ($ddest eq $src_configdata || ! -f $ddest)) {
2117                 $ddest = cleanfile($buildd, $_, $blddir);
2118             }
2119             foreach (@{$depends{$dest}}) {
2120                 my $d = cleanfile($sourced, $_, $blddir);
2121
2122                 # If we know it's generated, or assume it is because we can't
2123                 # find it in the source tree, we set file we depend on to be
2124                 # in the build tree rather than the source tree, and assume
2125                 # and that there are lines to build it in a BEGINRAW..ENDRAW
2126                 # section or in the Makefile template.
2127                 if ($d eq $src_configdata
2128                     || ! -f $d
2129                     || (grep { $d eq $_ }
2130                         map { cleanfile($srcdir, $_, $blddir) }
2131                         grep { /\.h$/ } keys %{$unified_info{generate}})) {
2132                     $d = cleanfile($buildd, $_, $blddir);
2133                 }
2134                 # Take note if the file to depend on is being renamed
2135                 # Take extra care with files ending with .a, they should
2136                 # be treated without that extension, and the extension
2137                 # should be added back after treatment.
2138                 $d =~ /(\.a)?$/;
2139                 my $e = $1 // "";
2140                 $d = $`.$e;
2141                 $unified_info{depends}->{$ddest}->{$d} = 1;
2142             }
2143         }
2144
2145         foreach (keys %includes) {
2146             my $dest = $_;
2147             my $ddest = cleanfile($sourced, $_, $blddir);
2148
2149             # If the destination doesn't exist in source, it can only be
2150             # a generated file in the build tree.
2151             if ($ddest eq $src_configdata || ! -f $ddest) {
2152                 $ddest = cleanfile($buildd, $_, $blddir);
2153             }
2154             foreach (@{$includes{$dest}}) {
2155                 my $is = cleandir($sourced, $_, $blddir);
2156                 my $ib = cleandir($buildd, $_, $blddir);
2157                 push @{$unified_info{includes}->{$ddest}->{source}}, $is
2158                     unless grep { $_ eq $is } @{$unified_info{includes}->{$ddest}->{source}};
2159                 push @{$unified_info{includes}->{$ddest}->{build}}, $ib
2160                     unless grep { $_ eq $ib } @{$unified_info{includes}->{$ddest}->{build}};
2161             }
2162         }
2163
2164         foreach (keys %defines) {
2165             my $dest = $_;
2166             my $ddest = cleanfile($sourced, $_, $blddir);
2167
2168             # If the destination doesn't exist in source, it can only be
2169             # a generated file in the build tree.
2170             if (! -f $ddest) {
2171                 $ddest = cleanfile($buildd, $_, $blddir);
2172                 if ($unified_info{rename}->{$ddest}) {
2173                     $ddest = $unified_info{rename}->{$ddest};
2174                 }
2175             }
2176             foreach (@{$defines{$dest}}) {
2177                 m|^([^=]*)(=.*)?$|;
2178                 die "0 length macro name not permitted\n" if $1 eq "";
2179                 die "$1 defined more than once\n"
2180                     if defined $unified_info{defines}->{$ddest}->{$1};
2181                 $unified_info{defines}->{$ddest}->{$1} = $2;
2182             }
2183         }
2184     }
2185
2186     my $ordinals_text = join(', ', sort keys %ordinals);
2187     warn <<"EOF" if $ordinals_text;
2188
2189 WARNING: ORDINALS were specified for $ordinals_text
2190 They are ignored and should be replaced with a combination of GENERATE,
2191 DEPEND and SHARED_SOURCE.
2192 EOF
2193
2194     # Massage the result
2195
2196     # If we depend on a header file or a perl module, add an inclusion of
2197     # its directory to allow smoothe inclusion
2198     foreach my $dest (keys %{$unified_info{depends}}) {
2199         next if $dest eq "";
2200         foreach my $d (keys %{$unified_info{depends}->{$dest}}) {
2201             next unless $d =~ /\.(h|pm)$/;
2202             my $i = dirname($d);
2203             my $spot =
2204                 $d eq "configdata.pm" || defined($unified_info{generate}->{$d})
2205                 ? 'build' : 'source';
2206             push @{$unified_info{includes}->{$dest}->{$spot}}, $i
2207                 unless grep { $_ eq $i } @{$unified_info{includes}->{$dest}->{$spot}};
2208         }
2209     }
2210
2211     # Go through all intermediary files and change their names to something that
2212     # reflects what they will be built for.  Note that for some source files,
2213     # this leads to duplicate object files because they are used multiple times.
2214     # the goal is to rename all object files according to this scheme:
2215     #    {productname}-{midfix}-{origobjname}.[o|res]
2216     # the {midfix} is a keyword indicating the type of product, which is mostly
2217     # valuable for libraries since they come in two forms.
2218     #
2219     # This also reorganises the {sources} and {shared_sources} so that the
2220     # former only contains ALL object files that are supposed to end up in
2221     # static libraries and programs, while the latter contains ALL object files
2222     # that are supposed to end up in shared libraries and DSOs.
2223     # The main reason for having two different source structures is to allow
2224     # the same name to be used for the static and the shared variants of a
2225     # library.
2226     {
2227         # Take copies so we don't get interference from added stuff
2228         my %unified_copy = ();
2229         foreach (('sources', 'shared_sources')) {
2230             $unified_copy{$_} = { %{$unified_info{$_}} }
2231                 if defined($unified_info{$_});
2232             delete $unified_info{$_};
2233         }
2234         foreach my $prodtype (('programs', 'libraries', 'modules', 'scripts')) {
2235             # $intent serves multi purposes:
2236             # - give a prefix for the new object files names
2237             # - in the case of libraries, rearrange the object files so static
2238             #   libraries use the 'sources' structure exclusively, while shared
2239             #   libraries use the 'shared_sources' structure exclusively.
2240             my $intent = {
2241                 programs  => { bin    => { src => [ 'sources' ],
2242                                            dst => 'sources' } },
2243                 libraries => { lib    => { src => [ 'sources' ],
2244                                            dst => 'sources' },
2245                                shlib  => { prodselect =>
2246                                                sub { grep !/\.a$/, @_ },
2247                                            src => [ 'sources',
2248                                                     'shared_sources' ],
2249                                            dst => 'shared_sources' } },
2250                 modules   => { dso    => { src => [ 'sources' ],
2251                                            dst => 'sources' } },
2252                 scripts   => { script => { src => [ 'sources' ],
2253                                            dst => 'sources' } }
2254                } -> {$prodtype};
2255             foreach my $kind (keys %$intent) {
2256                 next if ($intent->{$kind}->{dst} eq 'shared_sources'
2257                              && $disabled{shared});
2258
2259                 my @src = @{$intent->{$kind}->{src}};
2260                 my $dst = $intent->{$kind}->{dst};
2261                 my $prodselect = $intent->{$kind}->{prodselect} // sub { @_ };
2262                 foreach my $prod ($prodselect->(keys %{$unified_info{$prodtype}})) {
2263                     # %prod_sources has all applicable objects as keys, and
2264                     # their corresponding sources as values
2265                     my %prod_sources =
2266                         map { $_ => [ keys %{$unified_copy{sources}->{$_}} ] }
2267                         map { keys %{$unified_copy{$_}->{$prod}} }
2268                         @src;
2269                     foreach (keys %prod_sources) {
2270                         # Only affect object files and resource files,
2271                         # the others simply get a new value
2272                         # (+1 instead of -1)
2273                         if ($_ =~ /\.(o|res)$/) {
2274                             (my $prodname = $prod) =~ s|\.a$||;
2275                             my $newobj =
2276                                 catfile(dirname($_),
2277                                         basename($prodname)
2278                                             . '-' . $kind
2279                                             . '-' . basename($_));
2280                             $unified_info{$dst}->{$prod}->{$newobj} = 1;
2281                             foreach my $src (@{$prod_sources{$_}}) {
2282                                 $unified_info{sources}->{$newobj}->{$src} = 1;
2283                             }
2284                             # Adjust dependencies
2285                             foreach my $deps (keys %{$unified_info{depends}->{$_}}) {
2286                                 $unified_info{depends}->{$_}->{$deps} = -1;
2287                                 $unified_info{depends}->{$newobj}->{$deps} = 1;
2288                             }
2289                             # Adjust includes
2290                             foreach my $k (('source', 'build')) {
2291                                 next unless
2292                                     defined($unified_info{includes}->{$_}->{$k});
2293                                 my @incs = @{$unified_info{includes}->{$_}->{$k}};
2294                                 $unified_info{includes}->{$newobj}->{$k} = [ @incs ];
2295                             }
2296                         } else {
2297                             $unified_info{$dst}->{$prod}->{$_} = 1;
2298                         }
2299                     }
2300                 }
2301             }
2302         }
2303     }
2304     # At this point, we have a number of sources with the value -1.  They
2305     # aren't part of the local build and are probably meant for a different
2306     # platform, and can therefore be cleaned away.  That happens when making
2307     # %unified_info more efficient below.
2308
2309     ### Make unified_info a bit more efficient
2310     # One level structures
2311     foreach (("programs", "libraries", "modules", "scripts")) {
2312         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
2313     }
2314     # Two level structures
2315     foreach my $l1 (("sources", "shared_sources", "ldadd", "depends")) {
2316         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
2317             my @items =
2318                 sort
2319                 grep { $unified_info{$l1}->{$l2}->{$_} > 0 }
2320                 keys %{$unified_info{$l1}->{$l2}};
2321             if (@items) {
2322                 $unified_info{$l1}->{$l2} = [ @items ];
2323             } else {
2324                 delete $unified_info{$l1}->{$l2};
2325             }
2326         }
2327     }
2328     # Defines
2329     foreach my $dest (sort keys %{$unified_info{defines}}) {
2330         $unified_info{defines}->{$dest}
2331             = [ map { $_.$unified_info{defines}->{$dest}->{$_} }
2332                 sort keys %{$unified_info{defines}->{$dest}} ];
2333     }
2334     # Includes
2335     foreach my $dest (sort keys %{$unified_info{includes}}) {
2336         if (defined($unified_info{includes}->{$dest}->{build})) {
2337             my @source_includes = ();
2338             @source_includes = ( @{$unified_info{includes}->{$dest}->{source}} )
2339                 if defined($unified_info{includes}->{$dest}->{source});
2340             $unified_info{includes}->{$dest} =
2341                 [ @{$unified_info{includes}->{$dest}->{build}} ];
2342             foreach my $inc (@source_includes) {
2343                 push @{$unified_info{includes}->{$dest}}, $inc
2344                     unless grep { $_ eq $inc } @{$unified_info{includes}->{$dest}};
2345             }
2346         } elsif (defined($unified_info{includes}->{$dest}->{source})) {
2347             $unified_info{includes}->{$dest} =
2348                 [ @{$unified_info{includes}->{$dest}->{source}} ];
2349         } else {
2350             delete $unified_info{includes}->{$dest};
2351         }
2352     }
2353
2354     # For convenience collect information regarding directories where
2355     # files are generated, those generated files and the end product
2356     # they end up in where applicable.  Then, add build rules for those
2357     # directories
2358     my %loopinfo = ( "lib" => [ @{$unified_info{libraries}} ],
2359                      "dso" => [ @{$unified_info{modules}} ],
2360                      "bin" => [ @{$unified_info{programs}} ],
2361                      "script" => [ @{$unified_info{scripts}} ] );
2362     foreach my $type (keys %loopinfo) {
2363         foreach my $product (@{$loopinfo{$type}}) {
2364             my %dirs = ();
2365             my $pd = dirname($product);
2366
2367             foreach (@{$unified_info{sources}->{$product} // []},
2368                      @{$unified_info{shared_sources}->{$product} // []}) {
2369                 my $d = dirname($_);
2370
2371                 # We don't want to create targets for source directories
2372                 # when building out of source
2373                 next if ($config{sourcedir} ne $config{builddir}
2374                              && $d =~ m|^\Q$config{sourcedir}\E|);
2375                 # We already have a "test" target, and the current directory
2376                 # is just silly to make a target for
2377                 next if $d eq "test" || $d eq ".";
2378
2379                 $dirs{$d} = 1;
2380                 push @{$unified_info{dirinfo}->{$d}->{deps}}, $_
2381                     if $d ne $pd;
2382             }
2383             foreach (keys %dirs) {
2384                 push @{$unified_info{dirinfo}->{$_}->{products}->{$type}},
2385                     $product;
2386             }
2387         }
2388     }
2389 }
2390
2391 # For the schemes that need it, we provide the old *_obj configs
2392 # from the *_asm_obj ones
2393 foreach (grep /_(asm|aux)_src$/, keys %target) {
2394     my $src = $_;
2395     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
2396     $target{$obj} = $target{$src};
2397     $target{$obj} =~ s/\.[csS]\b/.o/g; # C and assembler
2398     $target{$obj} =~ s/\.(cc|cpp)\b/_cc.o/g; # C++
2399 }
2400
2401 # Write down our configuration where it fits #########################
2402
2403 print "Creating configdata.pm\n";
2404 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
2405 print OUT <<"EOF";
2406 #! $config{HASHBANGPERL}
2407
2408 package configdata;
2409
2410 use strict;
2411 use warnings;
2412
2413 use Exporter;
2414 #use vars qw(\@ISA \@EXPORT);
2415 our \@ISA = qw(Exporter);
2416 our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables \@disablables_int);
2417
2418 EOF
2419 print OUT "our %config = (\n";
2420 foreach (sort keys %config) {
2421     if (ref($config{$_}) eq "ARRAY") {
2422         print OUT "  ", $_, " => [ ", join(", ",
2423                                            map { quotify("perl", $_) }
2424                                            @{$config{$_}}), " ],\n";
2425     } elsif (ref($config{$_}) eq "HASH") {
2426         print OUT "  ", $_, " => {";
2427         if (scalar keys %{$config{$_}} > 0) {
2428             print OUT "\n";
2429             foreach my $key (sort keys %{$config{$_}}) {
2430                 print OUT "      ",
2431                     join(" => ",
2432                          quotify("perl", $key),
2433                          defined $config{$_}->{$key}
2434                              ? quotify("perl", $config{$_}->{$key})
2435                              : "undef");
2436                 print OUT ",\n";
2437             }
2438             print OUT "  ";
2439         }
2440         print OUT "},\n";
2441     } else {
2442         print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
2443     }
2444 }
2445 print OUT <<"EOF";
2446 );
2447
2448 EOF
2449 print OUT "our %target = (\n";
2450 foreach (sort keys %target) {
2451     if (ref($target{$_}) eq "ARRAY") {
2452         print OUT "  ", $_, " => [ ", join(", ",
2453                                            map { quotify("perl", $_) }
2454                                            @{$target{$_}}), " ],\n";
2455     } else {
2456         print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
2457     }
2458 }
2459 print OUT <<"EOF";
2460 );
2461
2462 EOF
2463 print OUT "our \%available_protocols = (\n";
2464 print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
2465 print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
2466 print OUT <<"EOF";
2467 );
2468
2469 EOF
2470 print OUT "our \@disablables = (\n";
2471 foreach (@disablables) {
2472     print OUT "  ", quotify("perl", $_), ",\n";
2473 }
2474 print OUT <<"EOF";
2475 );
2476
2477 EOF
2478 print OUT "# The following come from Configure's @disablables_int\n";
2479 print OUT "our \@disablables_int = (\n";
2480 foreach (@disablables_int) {
2481     print OUT "  ", quotify("perl", $_), ",\n";
2482 }
2483 print OUT <<"EOF";
2484 );
2485
2486 EOF
2487 print OUT "our \%disabled = (\n";
2488 foreach (sort keys %disabled) {
2489     print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
2490 }
2491 print OUT <<"EOF";
2492 );
2493
2494 EOF
2495 print OUT "our %withargs = (\n";
2496 foreach (sort keys %withargs) {
2497     if (ref($withargs{$_}) eq "ARRAY") {
2498         print OUT "  ", $_, " => [ ", join(", ",
2499                                            map { quotify("perl", $_) }
2500                                            @{$withargs{$_}}), " ],\n";
2501     } else {
2502         print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
2503     }
2504 }
2505 print OUT <<"EOF";
2506 );
2507
2508 EOF
2509 if ($builder eq "unified") {
2510     my $recurse;
2511     $recurse = sub {
2512         my $indent = shift;
2513         foreach (@_) {
2514             if (ref $_ eq "ARRAY") {
2515                 print OUT " "x$indent, "[\n";
2516                 foreach (@$_) {
2517                     $recurse->($indent + 4, $_);
2518                 }
2519                 print OUT " "x$indent, "],\n";
2520             } elsif (ref $_ eq "HASH") {
2521                 my %h = %$_;
2522                 print OUT " "x$indent, "{\n";
2523                 foreach (sort keys %h) {
2524                     if (ref $h{$_} eq "") {
2525                         print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
2526                     } else {
2527                         print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
2528                         $recurse->($indent + 8, $h{$_});
2529                     }
2530                 }
2531                 print OUT " "x$indent, "},\n";
2532             } else {
2533                 print OUT " "x$indent, quotify("perl", $_), ",\n";
2534             }
2535         }
2536     };
2537     print OUT "our %unified_info = (\n";
2538     foreach (sort keys %unified_info) {
2539         if (ref $unified_info{$_} eq "") {
2540             print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
2541         } else {
2542             print OUT " "x4, quotify("perl", $_), " =>\n";
2543             $recurse->(8, $unified_info{$_});
2544         }
2545     }
2546     print OUT <<"EOF";
2547 );
2548
2549 EOF
2550 }
2551 print OUT
2552     "# The following data is only used when this files is use as a script\n";
2553 print OUT "my \@makevars = (\n";
2554 foreach (sort keys %user) {
2555     print OUT "    '",$_,"',\n";
2556 }
2557 print OUT ");\n";
2558 print OUT "my \%disabled_info = (\n";
2559 foreach my $what (sort keys %disabled_info) {
2560     print OUT "    '$what' => {\n";
2561     foreach my $info (sort keys %{$disabled_info{$what}}) {
2562         if (ref $disabled_info{$what}->{$info} eq 'ARRAY') {
2563             print OUT "        $info => [ ",
2564                 join(', ', map { "'$_'" } @{$disabled_info{$what}->{$info}}),
2565                 " ],\n";
2566         } else {
2567             print OUT "        $info => '", $disabled_info{$what}->{$info},
2568                 "',\n";
2569         }
2570     }
2571     print OUT "    },\n";
2572 }
2573 print OUT ");\n";
2574 print OUT 'my @user_crossable = qw( ', join (' ', @user_crossable), " );\n";
2575 print OUT << 'EOF';
2576 # If run directly, we can give some answers, and even reconfigure
2577 unless (caller) {
2578     use Getopt::Long;
2579     use File::Spec::Functions;
2580     use File::Basename;
2581     use Pod::Usage;
2582
2583     my $here = dirname($0);
2584
2585     my $dump = undef;
2586     my $cmdline = undef;
2587     my $options = undef;
2588     my $target = undef;
2589     my $envvars = undef;
2590     my $makevars = undef;
2591     my $buildparams = undef;
2592     my $reconf = undef;
2593     my $verbose = undef;
2594     my $help = undef;
2595     my $man = undef;
2596     GetOptions('dump|d'                 => \$dump,
2597                'command-line|c'         => \$cmdline,
2598                'options|o'              => \$options,
2599                'target|t'               => \$target,
2600                'environment|e'          => \$envvars,
2601                'make-variables|m'       => \$makevars,
2602                'build-parameters|b'     => \$buildparams,
2603                'reconfigure|reconf|r'   => \$reconf,
2604                'verbose|v'              => \$verbose,
2605                'help'                   => \$help,
2606                'man'                    => \$man)
2607         or die "Errors in command line arguments\n";
2608
2609     unless ($dump || $cmdline || $options || $target || $envvars || $makevars
2610             || $buildparams || $reconf || $verbose || $help || $man) {
2611         print STDERR <<"_____";
2612 You must give at least one option.
2613 For more information, do '$0 --help'
2614 _____
2615         exit(2);
2616     }
2617
2618     if ($help) {
2619         pod2usage(-exitval => 0,
2620                   -verbose => 1);
2621     }
2622     if ($man) {
2623         pod2usage(-exitval => 0,
2624                   -verbose => 2);
2625     }
2626     if ($dump || $cmdline) {
2627         print "\nCommand line (with current working directory = $here):\n\n";
2628         print '    ',join(' ',
2629                           $config{PERL},
2630                           catfile($config{sourcedir}, 'Configure'),
2631                           @{$config{perlargv}}), "\n";
2632         print "\nPerl information:\n\n";
2633         print '    ',$config{perl_cmd},"\n";
2634         print '    ',$config{perl_version},' for ',$config{perl_archname},"\n";
2635     }
2636     if ($dump || $options) {
2637         my $longest = 0;
2638         my $longest2 = 0;
2639         foreach my $what (@disablables) {
2640             $longest = length($what) if $longest < length($what);
2641             $longest2 = length($disabled{$what})
2642                 if $disabled{$what} && $longest2 < length($disabled{$what});
2643         }
2644         print "\nEnabled features:\n\n";
2645         foreach my $what (@disablables) {
2646             print "    $what\n" unless $disabled{$what};
2647         }
2648         print "\nDisabled features:\n\n";
2649         foreach my $what (@disablables) {
2650             if ($disabled{$what}) {
2651                 print "    $what", ' ' x ($longest - length($what) + 1),
2652                     "[$disabled{$what}]", ' ' x ($longest2 - length($disabled{$what}) + 1);
2653                 print $disabled_info{$what}->{macro}
2654                     if $disabled_info{$what}->{macro};
2655                 print ' (skip ',
2656                     join(', ', @{$disabled_info{$what}->{skipped}}),
2657                     ')'
2658                     if $disabled_info{$what}->{skipped};
2659                 print "\n";
2660             }
2661         }
2662     }
2663     if ($dump || $target) {
2664         print "\nConfig target attributes:\n\n";
2665         foreach (sort keys %target) {
2666             next if $_ =~ m|^_| || $_ eq 'template';
2667             my $quotify = sub {
2668                 map { (my $x = $_) =~ s|([\\\$\@"])|\\$1|g; "\"$x\""} @_;
2669             };
2670             print '    ', $_, ' => ';
2671             if (ref($target{$_}) eq "ARRAY") {
2672                 print '[ ', join(', ', $quotify->(@{$target{$_}})), " ],\n";
2673             } else {
2674                 print $quotify->($target{$_}), ",\n"
2675             }
2676         }
2677     }
2678     if ($dump || $envvars) {
2679         print "\nRecorded environment:\n\n";
2680         foreach (sort keys %{$config{perlenv}}) {
2681             print '    ',$_,' = ',($config{perlenv}->{$_} || ''),"\n";
2682         }
2683     }
2684     if ($dump || $makevars) {
2685         print "\nMakevars:\n\n";
2686         foreach my $var (@makevars) {
2687             my $prefix = '';
2688             $prefix = $config{CROSS_COMPILE}
2689                 if grep { $var eq $_ } @user_crossable;
2690             $prefix //= '';
2691             print '    ',$var,' ' x (16 - length $var),'= ',
2692                 (ref $config{$var} eq 'ARRAY'
2693                  ? join(' ', @{$config{$var}})
2694                  : $prefix.$config{$var}),
2695                 "\n"
2696                 if defined $config{$var};
2697         }
2698
2699         my @buildfile = ($config{builddir}, $config{build_file});
2700         unshift @buildfile, $here
2701             unless file_name_is_absolute($config{builddir});
2702         my $buildfile = canonpath(catdir(@buildfile));
2703         print <<"_____";
2704
2705 NOTE: These variables only represent the configuration view.  The build file
2706 template may have processed these variables further, please have a look at the
2707 build file for more exact data:
2708     $buildfile
2709 _____
2710     }
2711     if ($dump || $buildparams) {
2712         my @buildfile = ($config{builddir}, $config{build_file});
2713         unshift @buildfile, $here
2714             unless file_name_is_absolute($config{builddir});
2715         print "\nbuild file:\n\n";
2716         print "    ", canonpath(catfile(@buildfile)),"\n";
2717
2718         print "\nbuild file templates:\n\n";
2719         foreach (@{$config{build_file_templates}}) {
2720             my @tmpl = ($_);
2721             unshift @tmpl, $here
2722                 unless file_name_is_absolute($config{sourcedir});
2723             print '    ',canonpath(catfile(@tmpl)),"\n";
2724         }
2725     }
2726     if ($reconf) {
2727         if ($verbose) {
2728             print 'Reconfiguring with: ', join(' ',@{$config{perlargv}}), "\n";
2729             foreach (sort keys %{$config{perlenv}}) {
2730                 print '    ',$_,' = ',($config{perlenv}->{$_} || ""),"\n";
2731             }
2732         }
2733
2734         chdir $here;
2735         exec $^X,catfile($config{sourcedir}, 'Configure'),'reconf';
2736     }
2737 }
2738
2739 1;
2740
2741 __END__
2742
2743 =head1 NAME
2744
2745 configdata.pm - configuration data for OpenSSL builds
2746
2747 =head1 SYNOPSIS
2748
2749 Interactive:
2750
2751   perl configdata.pm [options]
2752
2753 As data bank module:
2754
2755   use configdata;
2756
2757 =head1 DESCRIPTION
2758
2759 This module can be used in two modes, interactively and as a module containing
2760 all the data recorded by OpenSSL's Configure script.
2761
2762 When used interactively, simply run it as any perl script, with at least one
2763 option, and you will get the information you ask for.  See L</OPTIONS> below.
2764
2765 When loaded as a module, you get a few databanks with useful information to
2766 perform build related tasks.  The databanks are:
2767
2768     %config             Configured things.
2769     %target             The OpenSSL config target with all inheritances
2770                         resolved.
2771     %disabled           The features that are disabled.
2772     @disablables        The list of features that can be disabled.
2773     %withargs           All data given through --with-THING options.
2774     %unified_info       All information that was computed from the build.info
2775                         files.
2776
2777 =head1 OPTIONS
2778
2779 =over 4
2780
2781 =item B<--help>
2782
2783 Print a brief help message and exit.
2784
2785 =item B<--man>
2786
2787 Print the manual page and exit.
2788
2789 =item B<--dump> | B<-d>
2790
2791 Print all relevant configuration data.  This is equivalent to B<--command-line>
2792 B<--options> B<--target> B<--environment> B<--make-variables>
2793 B<--build-parameters>.
2794
2795 =item B<--command-line> | B<-c>
2796
2797 Print the current configuration command line.
2798
2799 =item B<--options> | B<-o>
2800
2801 Print the features, both enabled and disabled, and display defined macro and
2802 skipped directories where applicable.
2803
2804 =item B<--target> | B<-t>
2805
2806 Print the config attributes for this config target.
2807
2808 =item B<--environment> | B<-e>
2809
2810 Print the environment variables and their values at the time of configuration.
2811
2812 =item B<--make-variables> | B<-m>
2813
2814 Print the main make variables generated in the current configuration
2815
2816 =item B<--build-parameters> | B<-b>
2817
2818 Print the build parameters, i.e. build file and build file templates.
2819
2820 =item B<--reconfigure> | B<--reconf> | B<-r>
2821
2822 Redo the configuration.
2823
2824 =item B<--verbose> | B<-v>
2825
2826 Verbose output.
2827
2828 =back
2829
2830 =cut
2831
2832 EOF
2833 close(OUT);
2834 if ($builder_platform eq 'unix') {
2835     my $mode = (0755 & ~umask);
2836     chmod $mode, 'configdata.pm'
2837         or warn sprintf("WARNING: Couldn't change mode for 'configdata.pm' to 0%03o: %s\n",$mode,$!);
2838 }
2839
2840 my %builders = (
2841     unified => sub {
2842         print 'Creating ',$target{build_file},"\n";
2843         run_dofile(catfile($blddir, $target{build_file}),
2844                    @{$config{build_file_templates}});
2845     },
2846     );
2847
2848 $builders{$builder}->($builder_platform, @builder_opts);
2849
2850 $SIG{__DIE__} = $orig_death_handler;
2851
2852 print <<"EOF" if ($disabled{threads} eq "unavailable");
2853
2854 The library could not be configured for supporting multi-threaded
2855 applications as the compiler options required on this system are not known.
2856 See file INSTALL for details if you need multi-threading.
2857 EOF
2858
2859 print <<"EOF" if ($no_shared_warn);
2860
2861 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
2862 platform, so we will pretend you gave the option 'no-pic', which also disables
2863 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
2864 or position independent code, please let us know (but please first make sure
2865 you have tried with a current version of OpenSSL).
2866 EOF
2867
2868 print <<"EOF";
2869
2870 **********************************************************************
2871 ***                                                                ***
2872 ***   OpenSSL has been successfully configured                     ***
2873 ***                                                                ***
2874 ***   If you encounter a problem while building, please open an    ***
2875 ***   issue on GitHub <https://github.com/openssl/openssl/issues>  ***
2876 ***   and include the output from the following command:           ***
2877 ***                                                                ***
2878 ***       perl configdata.pm --dump                                ***
2879 ***                                                                ***
2880 ***   (If you are new to OpenSSL, you might want to consult the    ***
2881 ***   'Troubleshooting' section in the INSTALL file first)         ***
2882 ***                                                                ***
2883 **********************************************************************
2884 EOF
2885
2886 exit(0);
2887
2888 ######################################################################
2889 #
2890 # Helpers and utility functions
2891 #
2892
2893 # Death handler, to print a helpful message in case of failure #######
2894 #
2895 sub death_handler {
2896     die @_ if $^S;              # To prevent the added message in eval blocks
2897     my $build_file = $target{build_file} // "build file";
2898     my @message = ( <<"_____", @_ );
2899
2900 Failure!  $build_file wasn't produced.
2901 Please read INSTALL and associated NOTES files.  You may also have to look over
2902 your available compiler tool chain or change your configuration.
2903
2904 _____
2905
2906     # Dying is terminal, so it's ok to reset the signal handler here.
2907     $SIG{__DIE__} = $orig_death_handler;
2908     die @message;
2909 }
2910
2911 # Configuration file reading #########################################
2912
2913 # Note: All of the helper functions are for lazy evaluation.  They all
2914 # return a CODE ref, which will return the intended value when evaluated.
2915 # Thus, whenever there's mention of a returned value, it's about that
2916 # intended value.
2917
2918 # Helper function to implement conditional inheritance depending on the
2919 # value of $disabled{asm}.  Used in inherit_from values as follows:
2920 #
2921 #      inherit_from => [ "template", asm("asm_tmpl") ]
2922 #
2923 sub asm {
2924     my @x = @_;
2925     sub {
2926         $disabled{asm} ? () : @x;
2927     }
2928 }
2929
2930 # Helper function to implement conditional value variants, with a default
2931 # plus additional values based on the value of $config{build_type}.
2932 # Arguments are given in hash table form:
2933 #
2934 #       picker(default => "Basic string: ",
2935 #              debug   => "debug",
2936 #              release => "release")
2937 #
2938 # When configuring with --debug, the resulting string will be
2939 # "Basic string: debug", and when not, it will be "Basic string: release"
2940 #
2941 # This can be used to create variants of sets of flags according to the
2942 # build type:
2943 #
2944 #       cflags => picker(default => "-Wall",
2945 #                        debug   => "-g -O0",
2946 #                        release => "-O3")
2947 #
2948 sub picker {
2949     my %opts = @_;
2950     return sub { add($opts{default} || (),
2951                      $opts{$config{build_type}} || ())->(); }
2952 }
2953
2954 # Helper function to combine several values of different types into one.
2955 # This is useful if you want to combine a string with the result of a
2956 # lazy function, such as:
2957 #
2958 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
2959 #
2960 sub combine {
2961     my @stuff = @_;
2962     return sub { add(@stuff)->(); }
2963 }
2964
2965 # Helper function to implement conditional values depending on the value
2966 # of $disabled{threads}.  Can be used as follows:
2967 #
2968 #       cflags => combine("-Wall", threads("-pthread"))
2969 #
2970 sub threads {
2971     my @flags = @_;
2972     return sub { add($disabled{threads} ? () : @flags)->(); }
2973 }
2974
2975 sub shared {
2976     my @flags = @_;
2977     return sub { add($disabled{shared} ? () : @flags)->(); }
2978 }
2979
2980 our $add_called = 0;
2981 # Helper function to implement adding values to already existing configuration
2982 # values.  It handles elements that are ARRAYs, CODEs and scalars
2983 sub _add {
2984     my $separator = shift;
2985
2986     # If there's any ARRAY in the collection of values OR the separator
2987     # is undef, we will return an ARRAY of combined values, otherwise a
2988     # string of joined values with $separator as the separator.
2989     my $found_array = !defined($separator);
2990
2991     my @values =
2992         map {
2993             my $res = $_;
2994             while (ref($res) eq "CODE") {
2995                 $res = $res->();
2996             }
2997             if (defined($res)) {
2998                 if (ref($res) eq "ARRAY") {
2999                     $found_array = 1;
3000                     @$res;
3001                 } else {
3002                     $res;
3003                 }
3004             } else {
3005                 ();
3006             }
3007     } (@_);
3008
3009     $add_called = 1;
3010
3011     if ($found_array) {
3012         [ @values ];
3013     } else {
3014         join($separator, grep { defined($_) && $_ ne "" } @values);
3015     }
3016 }
3017 sub add_before {
3018     my $separator = " ";
3019     if (ref($_[$#_]) eq "HASH") {
3020         my $opts = pop;
3021         $separator = $opts->{separator};
3022     }
3023     my @x = @_;
3024     sub { _add($separator, @x, @_) };
3025 }
3026 sub add {
3027     my $separator = " ";
3028     if (ref($_[$#_]) eq "HASH") {
3029         my $opts = pop;
3030         $separator = $opts->{separator};
3031     }
3032     my @x = @_;
3033     sub { _add($separator, @_, @x) };
3034 }
3035
3036 sub read_eval_file {
3037     my $fname = shift;
3038     my $content;
3039     my @result;
3040
3041     open F, "< $fname" or die "Can't open '$fname': $!\n";
3042     {
3043         undef local $/;
3044         $content = <F>;
3045     }
3046     close F;
3047     {
3048         local $@;
3049
3050         @result = ( eval $content );
3051         warn $@ if $@;
3052     }
3053     return wantarray ? @result : $result[0];
3054 }
3055
3056 # configuration reader, evaluates the input file as a perl script and expects
3057 # it to fill %targets with target configurations.  Those are then added to
3058 # %table.
3059 sub read_config {
3060     my $fname = shift;
3061     my %targets;
3062
3063     {
3064         # Protect certain tables from tampering
3065         local %table = ();
3066
3067         %targets = read_eval_file($fname);
3068     }
3069     my %preexisting = ();
3070     foreach (sort keys %targets) {
3071         $preexisting{$_} = 1 if $table{$_};
3072     }
3073     die <<"EOF",
3074 The following config targets from $fname
3075 shadow pre-existing config targets with the same name:
3076 EOF
3077         map { "  $_\n" } sort keys %preexisting
3078         if %preexisting;
3079
3080
3081     # For each target, check that it's configured with a hash table.
3082     foreach (keys %targets) {
3083         if (ref($targets{$_}) ne "HASH") {
3084             if (ref($targets{$_}) eq "") {
3085                 warn "Deprecated target configuration for $_, ignoring...\n";
3086             } else {
3087                 warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
3088             }
3089             delete $targets{$_};
3090         } else {
3091             $targets{$_}->{_conf_fname_int} = add([ $fname ]);
3092         }
3093     }
3094
3095     %table = (%table, %targets);
3096
3097 }
3098
3099 # configuration resolver.  Will only resolve all the lazy evaluation
3100 # codeblocks for the chosen target and all those it inherits from,
3101 # recursively
3102 sub resolve_config {
3103     my $target = shift;
3104     my @breadcrumbs = @_;
3105
3106 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
3107
3108     if (grep { $_ eq $target } @breadcrumbs) {
3109         die "inherit_from loop!  target backtrace:\n  "
3110             ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
3111     }
3112
3113     if (!defined($table{$target})) {
3114         warn "Warning! target $target doesn't exist!\n";
3115         return ();
3116     }
3117     # Recurse through all inheritances.  They will be resolved on the
3118     # fly, so when this operation is done, they will all just be a
3119     # bunch of attributes with string values.
3120     # What we get here, though, are keys with references to lists of
3121     # the combined values of them all.  We will deal with lists after
3122     # this stage is done.
3123     my %combined_inheritance = ();
3124     if ($table{$target}->{inherit_from}) {
3125         my @inherit_from =
3126             map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
3127         foreach (@inherit_from) {
3128             my %inherited_config = resolve_config($_, $target, @breadcrumbs);
3129
3130             # 'template' is a marker that's considered private to
3131             # the config that had it.
3132             delete $inherited_config{template};
3133
3134             foreach (keys %inherited_config) {
3135                 if (!$combined_inheritance{$_}) {
3136                     $combined_inheritance{$_} = [];
3137                 }
3138                 push @{$combined_inheritance{$_}}, $inherited_config{$_};
3139             }
3140         }
3141     }
3142
3143     # We won't need inherit_from in this target any more, since we've
3144     # resolved all the inheritances that lead to this
3145     delete $table{$target}->{inherit_from};
3146
3147     # Now is the time to deal with those lists.  Here's the place to
3148     # decide what shall be done with those lists, all based on the
3149     # values of the target we're currently dealing with.
3150     # - If a value is a coderef, it will be executed with the list of
3151     #   inherited values as arguments.
3152     # - If the corresponding key doesn't have a value at all or is the
3153     #   empty string, the inherited value list will be run through the
3154     #   default combiner (below), and the result becomes this target's
3155     #   value.
3156     # - Otherwise, this target's value is assumed to be a string that
3157     #   will simply override the inherited list of values.
3158     my $default_combiner = add();
3159
3160     my %all_keys =
3161         map { $_ => 1 } (keys %combined_inheritance,
3162                          keys %{$table{$target}});
3163
3164     sub process_values {
3165         my $object    = shift;
3166         my $inherited = shift;  # Always a [ list ]
3167         my $target    = shift;
3168         my $entry     = shift;
3169
3170         $add_called = 0;
3171
3172         while(ref($object) eq "CODE") {
3173             $object = $object->(@$inherited);
3174         }
3175         if (!defined($object)) {
3176             return ();
3177         }
3178         elsif (ref($object) eq "ARRAY") {
3179             local $add_called;  # To make sure recursive calls don't affect it
3180             return [ map { process_values($_, $inherited, $target, $entry) }
3181                      @$object ];
3182         } elsif (ref($object) eq "") {
3183             return $object;
3184         } else {
3185             die "cannot handle reference type ",ref($object)
3186                 ," found in target ",$target," -> ",$entry,"\n";
3187         }
3188     }
3189
3190     foreach (sort keys %all_keys) {
3191         my $previous = $combined_inheritance{$_};
3192
3193         # Current target doesn't have a value for the current key?
3194         # Assign it the default combiner, the rest of this loop body
3195         # will handle it just like any other coderef.
3196         if (!exists $table{$target}->{$_}) {
3197             $table{$target}->{$_} = $default_combiner;
3198         }
3199
3200         $table{$target}->{$_} = process_values($table{$target}->{$_},
3201                                                $combined_inheritance{$_},
3202                                                $target, $_);
3203         unless(defined($table{$target}->{$_})) {
3204             delete $table{$target}->{$_};
3205         }
3206 #        if ($extra_checks &&
3207 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
3208 #            warn "$_ got replaced in $target\n";
3209 #        }
3210     }
3211
3212     # Finally done, return the result.
3213     return %{$table{$target}};
3214 }
3215
3216 sub usage
3217         {
3218         print STDERR $usage;
3219         print STDERR "\npick os/compiler from:\n";
3220         my $j=0;
3221         my $i;
3222         my $k=0;
3223         foreach $i (sort keys %table)
3224                 {
3225                 next if $table{$i}->{template};
3226                 next if $i =~ /^debug/;
3227                 $k += length($i) + 1;
3228                 if ($k > 78)
3229                         {
3230                         print STDERR "\n";
3231                         $k=length($i);
3232                         }
3233                 print STDERR $i . " ";
3234                 }
3235         foreach $i (sort keys %table)
3236                 {
3237                 next if $table{$i}->{template};
3238                 next if $i !~ /^debug/;
3239                 $k += length($i) + 1;
3240                 if ($k > 78)
3241                         {
3242                         print STDERR "\n";
3243                         $k=length($i);
3244                         }
3245                 print STDERR $i . " ";
3246                 }
3247         print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
3248         exit(1);
3249         }
3250
3251 sub run_dofile
3252 {
3253     my $out = shift;
3254     my @templates = @_;
3255
3256     unlink $out || warn "Can't remove $out, $!"
3257         if -f $out;
3258     foreach (@templates) {
3259         die "Can't open $_, $!" unless -f $_;
3260     }
3261     my $perlcmd = (quotify("maybeshell", $config{PERL}))[0];
3262     my $cmd = "$perlcmd \"-I.\" \"-Mconfigdata\" \"$dofile\" -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
3263     #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
3264     system($cmd);
3265     exit 1 if $? != 0;
3266     rename("$out.new", $out) || die "Can't rename $out.new, $!";
3267 }
3268
3269 sub compiler_predefined {
3270     state %predefined;
3271     my $cc = shift;
3272
3273     return () if $^O eq 'VMS';
3274
3275     die 'compiler_predefined called without a compiler command'
3276         unless $cc;
3277
3278     if (! $predefined{$cc}) {
3279
3280         $predefined{$cc} = {};
3281
3282         # collect compiler pre-defines from gcc or gcc-alike...
3283         open(PIPE, "$cc -dM -E -x c /dev/null 2>&1 |");
3284         while (my $l = <PIPE>) {
3285             $l =~ m/^#define\s+(\w+(?:\(\w+\))?)(?:\s+(.+))?/ or last;
3286             $predefined{$cc}->{$1} = $2 // '';
3287         }
3288         close(PIPE);
3289     }
3290
3291     return %{$predefined{$cc}};
3292 }
3293
3294 sub which
3295 {
3296     my ($name)=@_;
3297
3298     if (eval { require IPC::Cmd; 1; }) {
3299         IPC::Cmd->import();
3300         return scalar IPC::Cmd::can_run($name);
3301     } else {
3302         # if there is $directories component in splitpath,
3303         # then it's not something to test with $PATH...
3304         return $name if (File::Spec->splitpath($name))[1];
3305
3306         foreach (File::Spec->path()) {
3307             my $fullpath = catfile($_, "$name$target{exe_extension}");
3308             if (-f $fullpath and -x $fullpath) {
3309                 return $fullpath;
3310             }
3311         }
3312     }
3313 }
3314
3315 sub env
3316 {
3317     my $name = shift;
3318     my %opts = @_;
3319
3320     unless ($opts{cacheonly}) {
3321         # Note that if $ENV{$name} doesn't exist or is undefined,
3322         # $config{perlenv}->{$name} will be created with the value
3323         # undef.  This is intentional.
3324
3325         $config{perlenv}->{$name} = $ENV{$name}
3326             if ! exists $config{perlenv}->{$name};
3327     }
3328     return $config{perlenv}->{$name};
3329 }
3330
3331 # Configuration printer ##############################################
3332
3333 sub print_table_entry
3334 {
3335     local $now_printing = shift;
3336     my %target = resolve_config($now_printing);
3337     my $type = shift;
3338
3339     # Don't print the templates
3340     return if $target{template};
3341
3342     my @sequence = (
3343         "sys_id",
3344         "cpp",
3345         "cppflags",
3346         "defines",
3347         "includes",
3348         "cc",
3349         "cflags",
3350         "unistd",
3351         "ld",
3352         "lflags",
3353         "loutflag",
3354         "ex_libs",
3355         "bn_ops",
3356         "apps_aux_src",
3357         "cpuid_asm_src",
3358         "uplink_aux_src",
3359         "bn_asm_src",
3360         "ec_asm_src",
3361         "des_asm_src",
3362         "aes_asm_src",
3363         "bf_asm_src",
3364         "md5_asm_src",
3365         "cast_asm_src",
3366         "sha1_asm_src",
3367         "rc4_asm_src",
3368         "rmd160_asm_src",
3369         "rc5_asm_src",
3370         "wp_asm_src",
3371         "cmll_asm_src",
3372         "modes_asm_src",
3373         "padlock_asm_src",
3374         "chacha_asm_src",
3375         "poly1035_asm_src",
3376         "thread_scheme",
3377         "perlasm_scheme",
3378         "dso_scheme",
3379         "shared_target",
3380         "shared_cflag",
3381         "shared_defines",
3382         "shared_ldflag",
3383         "shared_rcflag",
3384         "shared_extension",
3385         "dso_extension",
3386         "obj_extension",
3387         "exe_extension",
3388         "ranlib",
3389         "ar",
3390         "arflags",
3391         "aroutflag",
3392         "rc",
3393         "rcflags",
3394         "rcoutflag",
3395         "mt",
3396         "mtflags",
3397         "mtinflag",
3398         "mtoutflag",
3399         "multilib",
3400         "build_scheme",
3401         );
3402
3403     if ($type eq "TABLE") {
3404         print "\n";
3405         print "*** $now_printing\n";
3406         foreach (@sequence) {
3407             if (ref($target{$_}) eq "ARRAY") {
3408                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
3409             } else {
3410                 printf "\$%-12s = %s\n", $_, $target{$_};
3411             }
3412         }
3413     } elsif ($type eq "HASH") {
3414         my $largest =
3415             length((sort { length($a) <=> length($b) } @sequence)[-1]);
3416         print "    '$now_printing' => {\n";
3417         foreach (@sequence) {
3418             if ($target{$_}) {
3419                 if (ref($target{$_}) eq "ARRAY") {
3420                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
3421                 } else {
3422                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
3423                 }
3424             }
3425         }
3426         print "    },\n";
3427     }
3428 }
3429
3430 # Utility routines ###################################################
3431
3432 # On VMS, if the given file is a logical name, File::Spec::Functions
3433 # will consider it an absolute path.  There are cases when we want a
3434 # purely syntactic check without checking the environment.
3435 sub isabsolute {
3436     my $file = shift;
3437
3438     # On non-platforms, we just use file_name_is_absolute().
3439     return file_name_is_absolute($file) unless $^O eq "VMS";
3440
3441     # If the file spec includes a device or a directory spec,
3442     # file_name_is_absolute() is perfectly safe.
3443     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
3444
3445     # Here, we know the given file spec isn't absolute
3446     return 0;
3447 }
3448
3449 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
3450 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
3451 # realpath() requires that at least all path components except the last is an
3452 # existing directory.  On VMS, the last component of the directory spec must
3453 # exist.
3454 sub absolutedir {
3455     my $dir = shift;
3456
3457     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
3458     # will return the volume name for the device, no matter what.  Also,
3459     # it will return an incorrect directory spec if the argument is a
3460     # directory that doesn't exist.
3461     if ($^O eq "VMS") {
3462         return rel2abs($dir);
3463     }
3464
3465     # We use realpath() on Unix, since no other will properly clean out
3466     # a directory spec.
3467     use Cwd qw/realpath/;
3468
3469     return realpath($dir);
3470 }
3471
3472 sub quotify {
3473     my %processors = (
3474         perl    => sub { my $x = shift;
3475                          $x =~ s/([\\\$\@"])/\\$1/g;
3476                          return '"'.$x.'"'; },
3477         maybeshell => sub { my $x = shift;
3478                             (my $y = $x) =~ s/([\\\"])/\\$1/g;
3479                             if ($x ne $y || $x =~ m|\s|) {
3480                                 return '"'.$y.'"';
3481                             } else {
3482                                 return $x;
3483                             }
3484                         },
3485         );
3486     my $for = shift;
3487     my $processor =
3488         defined($processors{$for}) ? $processors{$for} : sub { shift; };
3489
3490     return map { $processor->($_); } @_;
3491 }
3492
3493 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
3494 # $filename is a file name to read from
3495 # $line_concat_cond_re is a regexp detecting a line continuation ending
3496 # $line_concat is a CODEref that takes care of concatenating two lines
3497 sub collect_from_file {
3498     my $filename = shift;
3499     my $line_concat_cond_re = shift;
3500     my $line_concat = shift;
3501
3502     open my $fh, $filename || die "unable to read $filename: $!\n";
3503     return sub {
3504         my $saved_line = "";
3505         $_ = "";
3506         while (<$fh>) {
3507             s|\R$||;
3508             if (defined $line_concat) {
3509                 $_ = $line_concat->($saved_line, $_);
3510                 $saved_line = "";
3511             }
3512             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3513                 $saved_line = $_;
3514                 next;
3515             }
3516             return $_;
3517         }
3518         die "$filename ending with continuation line\n" if $_;
3519         close $fh;
3520         return undef;
3521     }
3522 }
3523
3524 # collect_from_array($array, $line_concat_cond_re, $line_concat)
3525 # $array is an ARRAYref of lines
3526 # $line_concat_cond_re is a regexp detecting a line continuation ending
3527 # $line_concat is a CODEref that takes care of concatenating two lines
3528 sub collect_from_array {
3529     my $array = shift;
3530     my $line_concat_cond_re = shift;
3531     my $line_concat = shift;
3532     my @array = (@$array);
3533
3534     return sub {
3535         my $saved_line = "";
3536         $_ = "";
3537         while (defined($_ = shift @array)) {
3538             s|\R$||;
3539             if (defined $line_concat) {
3540                 $_ = $line_concat->($saved_line, $_);
3541                 $saved_line = "";
3542             }
3543             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3544                 $saved_line = $_;
3545                 next;
3546             }
3547             return $_;
3548         }
3549         die "input text ending with continuation line\n" if $_;
3550         return undef;
3551     }
3552 }
3553
3554 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
3555 # $lineiterator is a CODEref that delivers one line at a time.
3556 # All following arguments are regex/CODEref pairs, where the regexp detects a
3557 # line and the CODEref does something with the result of the regexp.
3558 sub collect_information {
3559     my $lineiterator = shift;
3560     my %collectors = @_;
3561
3562     while(defined($_ = $lineiterator->())) {
3563         s|\R$||;
3564         my $found = 0;
3565         if ($collectors{"BEFORE"}) {
3566             $collectors{"BEFORE"}->($_);
3567         }
3568         foreach my $re (keys %collectors) {
3569             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
3570                 $collectors{$re}->($lineiterator);
3571                 $found = 1;
3572             };
3573         }
3574         if ($collectors{"OTHERWISE"}) {
3575             $collectors{"OTHERWISE"}->($lineiterator, $_)
3576                 unless $found || !defined $collectors{"OTHERWISE"};
3577         }
3578         if ($collectors{"AFTER"}) {
3579             $collectors{"AFTER"}->($_);
3580         }
3581     }
3582 }
3583
3584 # tokenize($line)
3585 # tokenize($line,$separator)
3586 # $line is a line of text to split up into tokens
3587 # $separator [optional] is a regular expression that separates the tokens,
3588 # the default being spaces.  Do not use quotes of any kind as separators,
3589 # that will give undefined results.
3590 # Returns a list of tokens.
3591 #
3592 # Tokens are divided by separator (spaces by default).  If the tokens include
3593 # the separators, they have to be quoted with single or double quotes.
3594 # Double quotes inside a double quoted token must be escaped.  Escaping is done
3595 # with backslash.
3596 # Basically, the same quoting rules apply for " and ' as in any
3597 # Unix shell.
3598 sub tokenize {
3599     my $line = my $debug_line = shift;
3600     my $separator = shift // qr|\s+|;
3601     my @result = ();
3602
3603     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
3604         print STDERR "DEBUG[tokenize]: \$separator = $separator\n";
3605     }
3606
3607     while ($line =~ s|^${separator}||, $line ne "") {
3608         my $token = "";
3609     again:
3610         $line =~ m/^(.*?)(${separator}|"|'|$)/;
3611         $token .= $1;
3612         $line = $2.$';
3613
3614         if ($line =~ m/^"((?:[^"\\]+|\\.)*)"/) {
3615             $token .= $1;
3616             $line = $';
3617             goto again;
3618         } elsif ($line =~ m/^'([^']*)'/) {
3619             $token .= $1;
3620             $line = $';
3621             goto again;
3622         }
3623         push @result, $token;
3624     }
3625
3626     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
3627         print STDERR "DEBUG[tokenize]: Parsed '$debug_line' into:\n";
3628         print STDERR "DEBUG[tokenize]: ('", join("', '", @result), "')\n";
3629     }
3630     return @result;
3631 }