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     if ($target{bn_asm_src} =~ /bn-586/) {
1411         push @{$config{lib_defines}}, "OPENSSL_BN_ASM_PART_WORDS";
1412         push @{$config{module_defines}}, "OPENSSL_BN_ASM_PART_WORDS";
1413     }
1414     if (!$disabled{sse2} && $target{bn_asm_src} =~ /86/) {
1415         push @{$config{lib_defines}}, "OPENSSL_IA32_SSE2";
1416         push @{$config{module_defines}}, "OPENSSL_IA32_SSE2";
1417     }
1418
1419     if ($target{bn_asm_src} =~ /-mont/) {
1420         push @{$config{lib_defines}}, "OPENSSL_BN_ASM_MONT";
1421         push @{$config{module_defines}}, "OPENSSL_BN_ASM_MONT";
1422     }
1423     if ($target{bn_asm_src} =~ /-mont5/) {
1424         push @{$config{lib_defines}}, "OPENSSL_BN_ASM_MONT5";
1425         push @{$config{module_defines}}, "OPENSSL_BN_ASM_MONT5";
1426     }
1427     if ($target{bn_asm_src} =~ /-gf2m/) {
1428         push @{$config{lib_defines}}, "OPENSSL_BN_ASM_GF2m";
1429         push @{$config{module_defines}}, "OPENSSL_BN_ASM_GF2m";
1430     }
1431     if ($target{bn_asm_src} =~ /-div3w/) {
1432         push @{$config{lib_defines}}, "BN_DIV3W";
1433         push @{$config{module_defines}}, "BN_DIV3W";
1434     }
1435
1436     if ($target{sha1_asm_src}) {
1437         push @{$config{lib_defines}}, "SHA1_ASM"   if ($target{sha1_asm_src} =~ /sx86/ || $target{sha1_asm_src} =~ /sha1/);
1438         push @{$config{lib_defines}}, "SHA256_ASM" if ($target{sha1_asm_src} =~ /sha256/);
1439         push @{$config{lib_defines}}, "SHA512_ASM" if ($target{sha1_asm_src} =~ /sha512/);
1440     }
1441     if ($target{keccak1600_asm_src} ne $table{DEFAULTS}->{keccak1600_asm_src}) {
1442         push @{$config{lib_defines}}, "KECCAK1600_ASM";
1443     }
1444     if ($target{rc4_asm_src} ne $table{DEFAULTS}->{rc4_asm_src}) {
1445         push @{$config{lib_defines}}, "RC4_ASM";
1446     }
1447     if ($target{md5_asm_src}) {
1448         push @{$config{lib_defines}}, "MD5_ASM";
1449     }
1450     $target{cast_asm_src}=$table{DEFAULTS}->{cast_asm_src} unless $disabled{pic}; # CAST assembler is not PIC
1451     if ($target{rmd160_asm_src}) {
1452         push @{$config{lib_defines}}, "RMD160_ASM";
1453     }
1454     if ($target{aes_asm_src}) {
1455         if ($target{aes_asm_src} =~ m/\baes-/) {
1456             push @{$config{lib_defines}}, "AES_ASM";
1457             push @{$config{module_defines}}, "AES_ASM";
1458         }
1459         # aes-ctr.fake is not a real file, only indication that assembler
1460         # module implements AES_ctr32_encrypt...
1461         if ($target{aes_asm_src} =~ s/\s*aes-ctr\.fake//) {
1462             push @{$config{lib_defines}}, "AES_CTR_ASM";
1463             push @{$config{module_defines}}, "AES_CTR_ASM";
1464         }
1465         # aes-xts.fake indicates presence of AES_xts_[en|de]crypt...
1466         if ($target{aes_asm_src} =~ s/\s*aes-xts\.fake//) {
1467             push @{$config{lib_defines}}, "AES_XTS_ASM";
1468             push @{$config{module_defines}}, "AES_XTS_ASM";
1469         }
1470         $target{aes_asm_src} =~ s/\s*(vpaes|aesni)-x86\.s//g if ($disabled{sse2});
1471         if ($target{aes_asm_src} =~ m/vpaes/) {
1472             push @{$config{lib_defines}}, "VPAES_ASM";
1473             push @{$config{module_defines}}, "VPAES_ASM";
1474         }
1475         if ($target{aes_asm_src} =~ m/bsaes/) {
1476             push @{$config{lib_defines}}, "BSAES_ASM";
1477             push @{$config{module_defines}}, "BSAES_ASM";
1478         }
1479     }
1480     if ($target{wp_asm_src} =~ /mmx/) {
1481         if ($config{processor} eq "386") {
1482             $target{wp_asm_src}=$table{DEFAULTS}->{wp_asm_src};
1483         } elsif (!$disabled{"whirlpool"}) {
1484             push @{$config{lib_defines}}, "WHIRLPOOL_ASM";
1485         }
1486     }
1487     if ($target{modes_asm_src} =~ /ghash-/) {
1488         push @{$config{lib_defines}}, "GHASH_ASM";
1489     }
1490     if ($target{ec_asm_src} =~ /ecp_nistz256/) {
1491         push @{$config{lib_defines}}, "ECP_NISTZ256_ASM";
1492     }
1493     if ($target{ec_asm_src} =~ /x25519/) {
1494         push @{$config{lib_defines}}, "X25519_ASM";
1495     }
1496     if ($target{padlock_asm_src} ne $table{DEFAULTS}->{padlock_asm_src}) {
1497         push @{$config{dso_defines}}, "PADLOCK_ASM";
1498     }
1499     if ($target{poly1305_asm_src} ne "") {
1500         push @{$config{lib_defines}}, "POLY1305_ASM";
1501     }
1502 }
1503
1504 my %predefined_C = compiler_predefined($config{CROSS_COMPILE}.$config{CC});
1505 my %predefined_CXX = $config{CXX}
1506     ? compiler_predefined($config{CROSS_COMPILE}.$config{CXX})
1507     : ();
1508
1509 # Check for makedepend capabilities.
1510 if (!$disabled{makedepend}) {
1511     if ($config{target} =~ /^(VC|vms)-/) {
1512         # For VC- and vms- targets, there's nothing more to do here.  The
1513         # functionality is hard coded in the corresponding build files for
1514         # cl (Windows) and CC/DECC (VMS).
1515     } elsif (($predefined_C{__GNUC__} // -1) >= 3
1516              && !($predefined_C{__APPLE_CC__} && !$predefined_C{__clang__})) {
1517         # We know that GNU C version 3 and up as well as all clang
1518         # versions support dependency generation, but Xcode did not
1519         # handle $cc -M before clang support (but claims __GNUC__ = 3)
1520         $config{makedepprog} = "\$(CROSS_COMPILE)$config{CC}";
1521     } else {
1522         # In all other cases, we look for 'makedepend', and disable the
1523         # capability if not found.
1524         $config{makedepprog} = which('makedepend');
1525         disable('unavailable', 'makedepend') unless $config{makedepprog};
1526     }
1527 }
1528
1529 if (!$disabled{asm} && !$predefined_C{__MACH__} && $^O ne 'VMS') {
1530     # probe for -Wa,--noexecstack option...
1531     if ($predefined_C{__clang__}) {
1532         # clang has builtin assembler, which doesn't recognize --help,
1533         # but it apparently recognizes the option in question on all
1534         # supported platforms even when it's meaningless. In other words
1535         # probe would fail, but probed option always accepted...
1536         push @{$config{cflags}}, "-Wa,--noexecstack", "-Qunused-arguments";
1537     } else {
1538         my $cc = $config{CROSS_COMPILE}.$config{CC};
1539         open(PIPE, "$cc -Wa,--help -c -o null.$$.o -x assembler /dev/null 2>&1 |");
1540         while(<PIPE>) {
1541             if (m/--noexecstack/) {
1542                 push @{$config{cflags}}, "-Wa,--noexecstack";
1543                 last;
1544             }
1545         }
1546         close(PIPE);
1547         unlink("null.$$.o");
1548     }
1549 }
1550
1551 # Deal with bn_ops ###################################################
1552
1553 $config{bn_ll}                  =0;
1554 $config{export_var_as_fn}       =0;
1555 my $def_int="unsigned int";
1556 $config{rc4_int}                =$def_int;
1557 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
1558
1559 my $count = 0;
1560 foreach (sort split(/\s+/,$target{bn_ops})) {
1561     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
1562     $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
1563     $config{bn_ll}=1                            if $_ eq 'BN_LLONG';
1564     $config{rc4_int}="unsigned char"            if $_ eq 'RC4_CHAR';
1565     ($config{b64l},$config{b64},$config{b32})
1566         =(0,1,0)                                if $_ eq 'SIXTY_FOUR_BIT';
1567     ($config{b64l},$config{b64},$config{b32})
1568         =(1,0,0)                                if $_ eq 'SIXTY_FOUR_BIT_LONG';
1569     ($config{b64l},$config{b64},$config{b32})
1570         =(0,0,1)                                if $_ eq 'THIRTY_TWO_BIT';
1571 }
1572 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
1573     if $count > 1;
1574
1575
1576 # Hack cflags for better warnings (dev option) #######################
1577
1578 # "Stringify" the C and C++ flags string.  This permits it to be made part of
1579 # a string and works as well on command lines.
1580 $config{cflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
1581                         @{$config{cflags}} ];
1582 $config{cxxflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
1583                           @{$config{cxxflags}} ] if $config{CXX};
1584
1585 $config{openssl_api_defines} = [
1586     "OPENSSL_MIN_API=".($apitable->{$config{api} // ""} // -1)
1587 ];
1588
1589 my @strict_warnings_collection=();
1590 if ($strict_warnings)
1591         {
1592         my $wopt;
1593         my $gccver = $predefined_C{__GNUC__} // -1;
1594
1595         warn "WARNING --strict-warnings requires gcc[>=4] or gcc-alike"
1596             unless $gccver >= 4;
1597         push @strict_warnings_collection, @gcc_devteam_warn;
1598         push @strict_warnings_collection, @clang_devteam_warn
1599             if (defined($predefined_C{__clang__}));
1600         }
1601
1602 if (grep { $_ eq '-static' } @{$config{LDFLAGS}}) {
1603     disable('static', 'pic', 'threads');
1604 }
1605
1606 $config{CFLAGS} = [ map { $_ eq '--ossl-strict-warnings'
1607                               ? @strict_warnings_collection
1608                               : ( $_ ) }
1609                     @{$config{CFLAGS}} ];
1610
1611 unless ($disabled{"crypto-mdebug-backtrace"})
1612         {
1613         foreach my $wopt (split /\s+/, $memleak_devteam_backtrace)
1614                 {
1615                 push @{$config{cflags}}, $wopt
1616                         unless grep { $_ eq $wopt } @{$config{cflags}};
1617                 }
1618         if ($target =~ /^BSD-/)
1619                 {
1620                 push @{$config{ex_libs}}, "-lexecinfo";
1621                 }
1622         }
1623
1624 unless ($disabled{afalgeng}) {
1625     $config{afalgeng}="";
1626     if (grep { $_ eq 'afalgeng' } @{$target{enable}}) {
1627         my $minver = 4*10000 + 1*100 + 0;
1628         if ($config{CROSS_COMPILE} eq "") {
1629             my $verstr = `uname -r`;
1630             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
1631             ($mi2) = $mi2 =~ /(\d+)/;
1632             my $ver = $ma*10000 + $mi1*100 + $mi2;
1633             if ($ver < $minver) {
1634                 disable('too-old-kernel', 'afalgeng');
1635             } else {
1636                 push @{$config{engdirs}}, "afalg";
1637             }
1638         } else {
1639             disable('cross-compiling', 'afalgeng');
1640         }
1641     } else {
1642         disable('not-linux', 'afalgeng');
1643     }
1644 }
1645
1646 push @{$config{openssl_feature_defines}}, "OPENSSL_NO_AFALGENG" if ($disabled{afalgeng});
1647
1648 unless ($disabled{ktls}) {
1649     $config{ktls}="";
1650     if ($target =~ m/^linux/) {
1651         my $usr = "/usr/$config{cross_compile_prefix}";
1652         chop($usr);
1653         if ($config{cross_compile_prefix} eq "") {
1654             $usr = "/usr";
1655         }
1656         my $minver = (4 << 16) + (13 << 8) + 0;
1657         my @verstr = split(" ",`cat $usr/include/linux/version.h | grep LINUX_VERSION_CODE`);
1658
1659         if ($verstr[2] < $minver) {
1660             disable('too-old-kernel', 'ktls');
1661         }
1662     } else {
1663         disable('not-linux', 'ktls');
1664     }
1665 }
1666
1667 push @{$config{openssl_other_defines}}, "OPENSSL_NO_KTLS" if ($disabled{ktls});
1668
1669 # Get the extra flags used when building shared libraries and modules.  We
1670 # do this late because some of them depend on %disabled.
1671
1672 # Make the flags to build DSOs the same as for shared libraries unless they
1673 # are already defined
1674 $target{module_cflags} = $target{shared_cflag} unless defined $target{module_cflags};
1675 $target{module_cxxflags} = $target{shared_cxxflag} unless defined $target{module_cxxflags};
1676 $target{module_ldflags} = $target{shared_ldflag} unless defined $target{module_ldflags};
1677 {
1678     my $shared_info_pl =
1679         catfile(dirname($0), "Configurations", "shared-info.pl");
1680     my %shared_info = read_eval_file($shared_info_pl);
1681     push @{$target{_conf_fname_int}}, $shared_info_pl;
1682     my $si = $target{shared_target};
1683     while (ref $si ne "HASH") {
1684         last if ! defined $si;
1685         if (ref $si eq "CODE") {
1686             $si = $si->();
1687         } else {
1688             $si = $shared_info{$si};
1689         }
1690     }
1691
1692     # Some of the 'shared_target' values don't have any entries in
1693     # %shared_info.  That's perfectly fine, AS LONG AS the build file
1694     # template knows how to handle this.  That is currently the case for
1695     # Windows and VMS.
1696     if (defined $si) {
1697         # Just as above, copy certain shared_* attributes to the corresponding
1698         # module_ attribute unless the latter is already defined
1699         $si->{module_cflags} = $si->{shared_cflag} unless defined $si->{module_cflags};
1700         $si->{module_cxxflags} = $si->{shared_cxxflag} unless defined $si->{module_cxxflags};
1701         $si->{module_ldflags} = $si->{shared_ldflag} unless defined $si->{module_ldflags};
1702         foreach (sort keys %$si) {
1703             $target{$_} = defined $target{$_}
1704                 ? add($si->{$_})->($target{$_})
1705                 : $si->{$_};
1706         }
1707     }
1708 }
1709
1710 # ALL MODIFICATIONS TO %disabled, %config and %target MUST BE DONE FROM HERE ON
1711
1712 # If we use the unified build, collect information from build.info files
1713 my %unified_info = ();
1714
1715 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
1716 if ($builder eq "unified") {
1717     use with_fallback qw(Text::Template);
1718
1719     sub cleandir {
1720         my $base = shift;
1721         my $dir = shift;
1722         my $relativeto = shift || ".";
1723
1724         $dir = catdir($base,$dir) unless isabsolute($dir);
1725
1726         # Make sure the directories we're building in exists
1727         mkpath($dir);
1728
1729         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
1730         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
1731         return $res;
1732     }
1733
1734     sub cleanfile {
1735         my $base = shift;
1736         my $file = shift;
1737         my $relativeto = shift || ".";
1738
1739         $file = catfile($base,$file) unless isabsolute($file);
1740
1741         my $d = dirname($file);
1742         my $f = basename($file);
1743
1744         # Make sure the directories we're building in exists
1745         mkpath($d);
1746
1747         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
1748         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
1749         return $res;
1750     }
1751
1752     # Store the name of the template file we will build the build file from
1753     # in %config.  This may be useful for the build file itself.
1754     my @build_file_template_names =
1755         ( $builder_platform."-".$target{build_file}.".tmpl",
1756           $target{build_file}.".tmpl" );
1757     my @build_file_templates = ();
1758
1759     # First, look in the user provided directory, if given
1760     if (defined env($local_config_envname)) {
1761         @build_file_templates =
1762             map {
1763                 if ($^O eq 'VMS') {
1764                     # VMS environment variables are logical names,
1765                     # which can be used as is
1766                     $local_config_envname . ':' . $_;
1767                 } else {
1768                     catfile(env($local_config_envname), $_);
1769                 }
1770             }
1771             @build_file_template_names;
1772     }
1773     # Then, look in our standard directory
1774     push @build_file_templates,
1775         ( map { cleanfile($srcdir, catfile("Configurations", $_), $blddir) }
1776           @build_file_template_names );
1777
1778     my $build_file_template;
1779     for $_ (@build_file_templates) {
1780         $build_file_template = $_;
1781         last if -f $build_file_template;
1782
1783         $build_file_template = undef;
1784     }
1785     if (!defined $build_file_template) {
1786         die "*** Couldn't find any of:\n", join("\n", @build_file_templates), "\n";
1787     }
1788     $config{build_file_templates}
1789       = [ cleanfile($srcdir, catfile("Configurations", "common0.tmpl"),
1790                     $blddir),
1791           $build_file_template,
1792           cleanfile($srcdir, catfile("Configurations", "common.tmpl"),
1793                     $blddir) ];
1794
1795     my @build_dirs = ( [ ] );   # current directory
1796
1797     $config{build_infos} = [ ];
1798
1799     my %ordinals = ();
1800     while (@build_dirs) {
1801         my @curd = @{shift @build_dirs};
1802         my $sourced = catdir($srcdir, @curd);
1803         my $buildd = catdir($blddir, @curd);
1804
1805         my $unixdir = join('/', @curd);
1806         if (exists $skipdir{$unixdir}) {
1807             my $what = $skipdir{$unixdir};
1808             push @{$disabled_info{$what}->{skipped}}, catdir(@curd);
1809             next;
1810         }
1811
1812         mkpath($buildd);
1813
1814         my $f = 'build.info';
1815         # The basic things we're trying to build
1816         my @programs = ();
1817         my @libraries = ();
1818         my @modules = ();
1819         my @scripts = ();
1820
1821         my %attributes = ();
1822         my %sources = ();
1823         my %shared_sources = ();
1824         my %includes = ();
1825         my %defines = ();
1826         my %depends = ();
1827         my %generate = ();
1828
1829         # Support for $variablename in build.info files.
1830         # Embedded perl code is the ultimate master, still.  If its output
1831         # contains a dollar sign, it had better be escaped, or it will be
1832         # taken for a variable name prefix.
1833         my %variables = ();
1834         my $variable_re = qr/\$([[:alpha:]][[:alnum:]_]*)/;
1835         my $expand_variables = sub {
1836             my $value = '';
1837             my $value_rest = shift;
1838
1839             while ($value_rest =~ /(?<!\\)${variable_re}/) {
1840                 $value .= $`;
1841                 $value .= $variables{$1};
1842                 $value_rest = $';
1843             }
1844             return $value . $value_rest;
1845         };
1846
1847         # We want to detect configdata.pm in the source tree, so we
1848         # don't use it if the build tree is different.
1849         my $src_configdata = cleanfile($srcdir, "configdata.pm", $blddir);
1850
1851         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
1852         my $template =
1853             Text::Template->new(TYPE => 'FILE',
1854                                 SOURCE => catfile($sourced, $f),
1855                                 PREPEND => qq{use lib "$FindBin::Bin/util/perl";});
1856         die "Something went wrong with $sourced/$f: $!\n" unless $template;
1857         my @text =
1858             split /^/m,
1859             $template->fill_in(HASH => { config => \%config,
1860                                          target => \%target,
1861                                          disabled => \%disabled,
1862                                          withargs => \%withargs,
1863                                          builddir => abs2rel($buildd, $blddir),
1864                                          sourcedir => abs2rel($sourced, $blddir),
1865                                          buildtop => abs2rel($blddir, $blddir),
1866                                          sourcetop => abs2rel($srcdir, $blddir) },
1867                                DELIMITERS => [ "{-", "-}" ]);
1868
1869         # The top item of this stack has the following values
1870         # -2 positive already run and we found ELSE (following ELSIF should fail)
1871         # -1 positive already run (skip until ENDIF)
1872         # 0 negatives so far (if we're at a condition, check it)
1873         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
1874         # 2 positive ELSE (following ELSIF should fail)
1875         my @skip = ();
1876         collect_information(
1877             collect_from_array([ @text ],
1878                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
1879                                                 $l1 =~ s/\\$//; $l1.$l2 }),
1880             # Info we're looking for
1881             qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
1882             => sub {
1883                 if (! @skip || $skip[$#skip] > 0) {
1884                     push @skip, !! $1;
1885                 } else {
1886                     push @skip, -1;
1887                 }
1888             },
1889             qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
1890             => sub { die "ELSIF out of scope" if ! @skip;
1891                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
1892                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
1893                      $skip[$#skip] = !! $1
1894                          if $skip[$#skip] == 0; },
1895             qr/^\s*ELSE\s*$/
1896             => sub { die "ELSE out of scope" if ! @skip;
1897                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
1898                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
1899             qr/^\s*ENDIF\s*$/
1900             => sub { die "ENDIF out of scope" if ! @skip;
1901                      pop @skip; },
1902             qr/^\s*${variable_re}\s*=\s*(.*?)\s*$/
1903             => sub {
1904                 if (!@skip || $skip[$#skip] > 0) {
1905                     $variables{$1} = $2;
1906                 }
1907             },
1908             qr/^\s*SUBDIRS\s*=\s*(.*)\s*$/
1909             => sub {
1910                 if (!@skip || $skip[$#skip] > 0) {
1911                     foreach (tokenize($expand_variables->($1))) {
1912                         push @build_dirs, [ @curd, splitdir($_, 1) ];
1913                     }
1914                 }
1915             },
1916             qr/^\s*PROGRAMS(?:{([\w=]+(?:\s*,\s*[\w=]+)*)})?\s*=\s*(.*)\s*$/
1917             => sub {
1918                 if (!@skip || $skip[$#skip] > 0) {
1919                     my @a = tokenize($1, qr|\s*,\s*|);
1920                     my @p = tokenize($expand_variables->($2));
1921                     push @programs, @p;
1922                     foreach my $a (@a) {
1923                         my $ak = $a;
1924                         my $av = 1;
1925                         if ($a =~ m|^(.*?)\s*=\s*(.*?)$|) {
1926                             $ak = $1;
1927                             $av = $2;
1928                         }
1929                         foreach my $p (@p) {
1930                             $attributes{$p}->{$ak} = $av;
1931                         }
1932                     }
1933                 }
1934             },
1935             qr/^\s*LIBS(?:{([\w=]+(?:\s*,\s*[\w=]+)*)})?\s*=\s*(.*)\s*$/
1936             => sub {
1937                 if (!@skip || $skip[$#skip] > 0) {
1938                     my @a = tokenize($1, qr|\s*,\s*|);
1939                     my @l = tokenize($expand_variables->($2));
1940                     push @libraries, @l;
1941                     foreach my $a (@a) {
1942                         my $ak = $a;
1943                         my $av = 1;
1944                         if ($a =~ m|^(.*?)\s*=\s*(.*?)$|) {
1945                             $ak = $1;
1946                             $av = $2;
1947                         }
1948                         foreach my $l (@l) {
1949                             $attributes{$l}->{$ak} = $av;
1950                         }
1951                     }
1952                 }
1953             },
1954             qr/^\s*MODULES(?:{([\w=]+(?:\s*,\s*[\w=]+)*)})?\s*=\s*(.*)\s*$/
1955             => sub {
1956                 if (!@skip || $skip[$#skip] > 0) {
1957                     my @a = tokenize($1, qr|\s*,\s*|);
1958                     my @m = tokenize($expand_variables->($2));
1959                     push @modules, @m;
1960                     foreach my $a (@a) {
1961                         my $ak = $a;
1962                         my $av = 1;
1963                         if ($a =~ m|^(.*?)\s*=\s*(.*?)$|) {
1964                             $ak = $1;
1965                             $av = $2;
1966                         }
1967                         foreach my $m (@m) {
1968                             $attributes{$m}->{$ak} = $av;
1969                         }
1970                     }
1971                 }
1972             },
1973             qr/^\s*SCRIPTS(?:{([\w=]+(?:\s*,\s*[\w=]+)*)})?\s*=\s*(.*)\s*$/
1974             => sub {
1975                 if (!@skip || $skip[$#skip] > 0) {
1976                     my @a = tokenize($1, qr|\s*,\s*|);
1977                     my @s = tokenize($expand_variables->($2));
1978                     push @scripts, @s;
1979                     foreach my $a (@a) {
1980                         my $ak = $a;
1981                         my $av = 1;
1982                         if ($a =~ m|^(.*?)\s*=\s*(.*?)$|) {
1983                             $ak = $1;
1984                             $av = $2;
1985                         }
1986                         foreach my $s (@s) {
1987                             $attributes{$s}->{$ak} = $av;
1988                         }
1989                     }
1990                 }
1991             },
1992
1993             qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
1994             => sub { push @{$ordinals{$1}}, tokenize($expand_variables->($2))
1995                          if !@skip || $skip[$#skip] > 0 },
1996             qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1997             => sub { push @{$sources{$1}}, tokenize($expand_variables->($2))
1998                          if !@skip || $skip[$#skip] > 0 },
1999             qr/^\s*SHARED_SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
2000             => sub { push @{$shared_sources{$1}},
2001                          tokenize($expand_variables->($2))
2002                          if !@skip || $skip[$#skip] > 0 },
2003             qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
2004             => sub { push @{$includes{$1}}, tokenize($expand_variables->($2))
2005                          if !@skip || $skip[$#skip] > 0 },
2006             qr/^\s*DEFINE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
2007             => sub { push @{$defines{$1}}, tokenize($expand_variables->($2))
2008                          if !@skip || $skip[$#skip] > 0 },
2009             qr/^\s*DEPEND\[((?:\\.|[^\\\]])*)\]\s*=\s*(.*)\s*$/
2010             => sub { push @{$depends{$1}}, tokenize($expand_variables->($2))
2011                          if !@skip || $skip[$#skip] > 0 },
2012             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
2013             => sub { push @{$generate{$1}}, $2
2014                          if !@skip || $skip[$#skip] > 0 },
2015             qr/^\s*(?:#.*)?$/ => sub { },
2016             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
2017             "BEFORE" => sub {
2018                 if ($buildinfo_debug) {
2019                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
2020                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
2021                 }
2022             },
2023             "AFTER" => sub {
2024                 if ($buildinfo_debug) {
2025                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
2026                 }
2027             },
2028             );
2029         die "runaway IF?" if (@skip);
2030
2031         if (grep { defined $attributes{$_}->{engine} } keys %attributes
2032                 and !$config{dynamic_engines}) {
2033             die <<"EOF"
2034 ENGINES can only be used if configured with 'dynamic-engine'.
2035 This is usually a fault in a build.info file.
2036 EOF
2037         }
2038
2039         foreach (keys %attributes) {
2040             my $dest = $_;
2041             my $ddest = cleanfile($buildd, $_, $blddir);
2042             foreach (keys %{$attributes{$dest} // {}}) {
2043                 $unified_info{attributes}->{$ddest}->{$_} =
2044                     $attributes{$dest}->{$_};
2045             }
2046         }
2047
2048         {
2049             my %infos = ( programs  => [ @programs  ],
2050                           libraries => [ @libraries ],
2051                           modules   => [ @modules   ],
2052                           scripts   => [ @scripts   ] );
2053             foreach my $k (keys %infos) {
2054                 foreach (@{$infos{$k}}) {
2055                     my $item = cleanfile($buildd, $_, $blddir);
2056                     $unified_info{$k}->{$item} = 1;
2057                 }
2058             }
2059         }
2060
2061         # Check that we haven't defined any library as both shared and
2062         # explicitly static.  That is forbidden.
2063         my @doubles = ();
2064         foreach (grep /\.a$/, keys %{$unified_info{libraries}}) {
2065             (my $l = $_) =~ s/\.a$//;
2066             push @doubles, $l if defined $unified_info{libraries}->{$l};
2067         }
2068         die "these libraries are both explicitly static and shared:\n  ",
2069             join(" ", @doubles), "\n"
2070             if @doubles;
2071
2072         foreach (keys %sources) {
2073             my $dest = $_;
2074             my $ddest = cleanfile($buildd, $_, $blddir);
2075             foreach (@{$sources{$dest}}) {
2076                 my $s = cleanfile($sourced, $_, $blddir);
2077
2078                 # If it isn't in the source tree, we assume it's generated
2079                 # in the build tree
2080                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
2081                     $s = cleanfile($buildd, $_, $blddir);
2082                 }
2083                 # We recognise C++, C and asm files
2084                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2085                     my $o = $_;
2086                     $o =~ s/\.[csS]$/.o/; # C and assembler
2087                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2088                     $o = cleanfile($buildd, $o, $blddir);
2089                     $unified_info{sources}->{$ddest}->{$o} = -1;
2090                     $unified_info{sources}->{$o}->{$s} = -1;
2091                 } elsif ($s =~ /\.rc$/) {
2092                     # We also recognise resource files
2093                     my $o = $_;
2094                     $o =~ s/\.rc$/.res/; # Resource configuration
2095                     my $o = cleanfile($buildd, $o, $blddir);
2096                     $unified_info{sources}->{$ddest}->{$o} = -1;
2097                     $unified_info{sources}->{$o}->{$s} = -1;
2098                 } else {
2099                     $unified_info{sources}->{$ddest}->{$s} = 1;
2100                 }
2101             }
2102         }
2103
2104         foreach (keys %shared_sources) {
2105             my $dest = $_;
2106             my $ddest = cleanfile($buildd, $_, $blddir);
2107             foreach (@{$shared_sources{$dest}}) {
2108                 my $s = cleanfile($sourced, $_, $blddir);
2109
2110                 # If it isn't in the source tree, we assume it's generated
2111                 # in the build tree
2112                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
2113                     $s = cleanfile($buildd, $_, $blddir);
2114                 }
2115
2116                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2117                     # We recognise C++, C and asm files
2118                     my $o = $_;
2119                     $o =~ s/\.[csS]$/.o/; # C and assembler
2120                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2121                     $o = cleanfile($buildd, $o, $blddir);
2122                     $unified_info{shared_sources}->{$ddest}->{$o} = -1;
2123                     $unified_info{sources}->{$o}->{$s} = -1;
2124                 } elsif ($s =~ /\.rc$/) {
2125                     # We also recognise resource files
2126                     my $o = $_;
2127                     $o =~ s/\.rc$/.res/; # Resource configuration
2128                     my $o = cleanfile($buildd, $o, $blddir);
2129                     $unified_info{shared_sources}->{$ddest}->{$o} = -1;
2130                     $unified_info{sources}->{$o}->{$s} = -1;
2131                 } elsif ($s =~ /\.ld$/) {
2132                     # We also recognise linker scripts (or corresponding)
2133                     # We know they are generated files
2134                     my $ld = cleanfile($buildd, $_, $blddir);
2135                     $unified_info{shared_sources}->{$ddest}->{$ld} = 1;
2136                 } else {
2137                     die "unrecognised source file type for shared library: $s\n";
2138                 }
2139             }
2140         }
2141
2142         foreach (keys %generate) {
2143             my $dest = $_;
2144             my $ddest = cleanfile($buildd, $_, $blddir);
2145             die "more than one generator for $dest: "
2146                     ,join(" ", @{$generate{$_}}),"\n"
2147                     if scalar @{$generate{$_}} > 1;
2148             my @generator = split /\s+/, $generate{$dest}->[0];
2149             $generator[0] = cleanfile($sourced, $generator[0], $blddir),
2150             $unified_info{generate}->{$ddest} = [ @generator ];
2151         }
2152
2153         foreach (keys %depends) {
2154             my $dest = $_;
2155             my $ddest = $dest eq "" ? "" : cleanfile($sourced, $_, $blddir);
2156
2157             # If the destination doesn't exist in source, it can only be
2158             # a generated file in the build tree.
2159             if ($ddest ne "" && ($ddest eq $src_configdata || ! -f $ddest)) {
2160                 $ddest = cleanfile($buildd, $_, $blddir);
2161             }
2162             foreach (@{$depends{$dest}}) {
2163                 my $d = cleanfile($sourced, $_, $blddir);
2164
2165                 # If we know it's generated, or assume it is because we can't
2166                 # find it in the source tree, we set file we depend on to be
2167                 # in the build tree rather than the source tree, and assume
2168                 # and that there are lines to build it in a BEGINRAW..ENDRAW
2169                 # section or in the Makefile template.
2170                 if ($d eq $src_configdata
2171                     || ! -f $d
2172                     || (grep { $d eq $_ }
2173                         map { cleanfile($srcdir, $_, $blddir) }
2174                         grep { /\.h$/ } keys %{$unified_info{generate}})) {
2175                     $d = cleanfile($buildd, $_, $blddir);
2176                 }
2177                 # Take note if the file to depend on is being renamed
2178                 # Take extra care with files ending with .a, they should
2179                 # be treated without that extension, and the extension
2180                 # should be added back after treatment.
2181                 $d =~ /(\.a)?$/;
2182                 my $e = $1 // "";
2183                 $d = $`.$e;
2184                 $unified_info{depends}->{$ddest}->{$d} = 1;
2185             }
2186         }
2187
2188         foreach (keys %includes) {
2189             my $dest = $_;
2190             my $ddest = cleanfile($sourced, $_, $blddir);
2191
2192             # If the destination doesn't exist in source, it can only be
2193             # a generated file in the build tree.
2194             if ($ddest eq $src_configdata || ! -f $ddest) {
2195                 $ddest = cleanfile($buildd, $_, $blddir);
2196             }
2197             foreach (@{$includes{$dest}}) {
2198                 my $is = cleandir($sourced, $_, $blddir);
2199                 my $ib = cleandir($buildd, $_, $blddir);
2200                 push @{$unified_info{includes}->{$ddest}->{source}}, $is
2201                     unless grep { $_ eq $is } @{$unified_info{includes}->{$ddest}->{source}};
2202                 push @{$unified_info{includes}->{$ddest}->{build}}, $ib
2203                     unless grep { $_ eq $ib } @{$unified_info{includes}->{$ddest}->{build}};
2204             }
2205         }
2206
2207         foreach (keys %defines) {
2208             my $dest = $_;
2209             my $ddest = cleanfile($sourced, $_, $blddir);
2210
2211             # If the destination doesn't exist in source, it can only be
2212             # a generated file in the build tree.
2213             if (! -f $ddest) {
2214                 $ddest = cleanfile($buildd, $_, $blddir);
2215                 if ($unified_info{rename}->{$ddest}) {
2216                     $ddest = $unified_info{rename}->{$ddest};
2217                 }
2218             }
2219             foreach (@{$defines{$dest}}) {
2220                 m|^([^=]*)(=.*)?$|;
2221                 die "0 length macro name not permitted\n" if $1 eq "";
2222                 die "$1 defined more than once\n"
2223                     if defined $unified_info{defines}->{$ddest}->{$1};
2224                 $unified_info{defines}->{$ddest}->{$1} = $2;
2225             }
2226         }
2227     }
2228
2229     my $ordinals_text = join(', ', sort keys %ordinals);
2230     warn <<"EOF" if $ordinals_text;
2231
2232 WARNING: ORDINALS were specified for $ordinals_text
2233 They are ignored and should be replaced with a combination of GENERATE,
2234 DEPEND and SHARED_SOURCE.
2235 EOF
2236
2237
2238     # Go through the sources of all libraries and check that the same basename
2239     # doesn't appear more than once.  Some static library archivers depend on
2240     # them being unique.
2241     {
2242         my $err = 0;
2243         foreach my $prod (keys %{$unified_info{libraries}}) {
2244             my @prod_sources =
2245                 map { keys %{$unified_info{sources}->{$_}} }
2246                 keys %{$unified_info{sources}->{$prod}};
2247             my %srccnt = ();
2248
2249             # Count how many times a given each source basename
2250             # appears for each product.
2251             foreach my $src (@prod_sources) {
2252                 $srccnt{basename $src}++;
2253             }
2254
2255             foreach my $src (keys %srccnt) {
2256                 if ((my $cnt = $srccnt{$src}) > 1) {
2257                     print STDERR "$src appears $cnt times for the product $prod\n";
2258                     $err++
2259                 }
2260             }
2261         }
2262         die if $err > 0;
2263     }
2264
2265     # Massage the result
2266
2267     # If we depend on a header file or a perl module, add an inclusion of
2268     # its directory to allow smoothe inclusion
2269     foreach my $dest (keys %{$unified_info{depends}}) {
2270         next if $dest eq "";
2271         foreach my $d (keys %{$unified_info{depends}->{$dest}}) {
2272             next unless $d =~ /\.(h|pm)$/;
2273             my $i = dirname($d);
2274             my $spot =
2275                 $d eq "configdata.pm" || defined($unified_info{generate}->{$d})
2276                 ? 'build' : 'source';
2277             push @{$unified_info{includes}->{$dest}->{$spot}}, $i
2278                 unless grep { $_ eq $i } @{$unified_info{includes}->{$dest}->{$spot}};
2279         }
2280     }
2281
2282     # Go through all intermediary files and change their names to something that
2283     # reflects what they will be built for.  Note that for some source files,
2284     # this leads to duplicate object files because they are used multiple times.
2285     # the goal is to rename all object files according to this scheme:
2286     #    {productname}-{midfix}-{origobjname}.[o|res]
2287     # the {midfix} is a keyword indicating the type of product, which is mostly
2288     # valuable for libraries since they come in two forms.
2289     #
2290     # This also reorganises the {sources} and {shared_sources} so that the
2291     # former only contains ALL object files that are supposed to end up in
2292     # static libraries and programs, while the latter contains ALL object files
2293     # that are supposed to end up in shared libraries and DSOs.
2294     # The main reason for having two different source structures is to allow
2295     # the same name to be used for the static and the shared variants of a
2296     # library.
2297     {
2298         # Take copies so we don't get interference from added stuff
2299         my %unified_copy = ();
2300         foreach (('sources', 'shared_sources')) {
2301             $unified_copy{$_} = { %{$unified_info{$_}} }
2302                 if defined($unified_info{$_});
2303             delete $unified_info{$_};
2304         }
2305         foreach my $prodtype (('programs', 'libraries', 'modules', 'scripts')) {
2306             # $intent serves multi purposes:
2307             # - give a prefix for the new object files names
2308             # - in the case of libraries, rearrange the object files so static
2309             #   libraries use the 'sources' structure exclusively, while shared
2310             #   libraries use the 'shared_sources' structure exclusively.
2311             my $intent = {
2312                 programs  => { bin    => { src => [ 'sources' ],
2313                                            dst => 'sources' } },
2314                 libraries => { lib    => { src => [ 'sources' ],
2315                                            dst => 'sources' },
2316                                shlib  => { prodselect =>
2317                                                sub { grep !/\.a$/, @_ },
2318                                            src => [ 'sources',
2319                                                     'shared_sources' ],
2320                                            dst => 'shared_sources' } },
2321                 modules   => { dso    => { src => [ 'sources' ],
2322                                            dst => 'sources' } },
2323                 scripts   => { script => { src => [ 'sources' ],
2324                                            dst => 'sources' } }
2325                } -> {$prodtype};
2326             foreach my $kind (keys %$intent) {
2327                 next if ($intent->{$kind}->{dst} eq 'shared_sources'
2328                              && $disabled{shared});
2329
2330                 my @src = @{$intent->{$kind}->{src}};
2331                 my $dst = $intent->{$kind}->{dst};
2332                 my $prodselect = $intent->{$kind}->{prodselect} // sub { @_ };
2333                 foreach my $prod ($prodselect->(keys %{$unified_info{$prodtype}})) {
2334                     # %prod_sources has all applicable objects as keys, and
2335                     # their corresponding sources as values
2336                     my %prod_sources =
2337                         map { $_ => [ keys %{$unified_copy{sources}->{$_}} ] }
2338                         map { keys %{$unified_copy{$_}->{$prod}} }
2339                         @src;
2340                     foreach (keys %prod_sources) {
2341                         # Only affect object files and resource files,
2342                         # the others simply get a new value
2343                         # (+1 instead of -1)
2344                         if ($_ =~ /\.(o|res)$/) {
2345                             (my $prodname = $prod) =~ s|\.a$||;
2346                             my $newobj =
2347                                 catfile(dirname($_),
2348                                         basename($prodname)
2349                                             . '-' . $kind
2350                                             . '-' . basename($_));
2351                             $unified_info{$dst}->{$prod}->{$newobj} = 1;
2352                             foreach my $src (@{$prod_sources{$_}}) {
2353                                 $unified_info{sources}->{$newobj}->{$src} = 1;
2354                             }
2355                             # Adjust dependencies
2356                             foreach my $deps (keys %{$unified_info{depends}->{$_}}) {
2357                                 $unified_info{depends}->{$_}->{$deps} = -1;
2358                                 $unified_info{depends}->{$newobj}->{$deps} = 1;
2359                             }
2360                             # Adjust includes
2361                             foreach my $k (('source', 'build')) {
2362                                 next unless
2363                                     defined($unified_info{includes}->{$_}->{$k});
2364                                 my @incs = @{$unified_info{includes}->{$_}->{$k}};
2365                                 $unified_info{includes}->{$newobj}->{$k} = [ @incs ];
2366                             }
2367                         } else {
2368                             $unified_info{$dst}->{$prod}->{$_} = 1;
2369                         }
2370                     }
2371                 }
2372             }
2373         }
2374     }
2375
2376     # At this point, we have a number of sources with the value -1.  They
2377     # aren't part of the local build and are probably meant for a different
2378     # platform, and can therefore be cleaned away.  That happens when making
2379     # %unified_info more efficient below.
2380
2381     ### Make unified_info a bit more efficient
2382     # One level structures
2383     foreach (("programs", "libraries", "modules", "scripts")) {
2384         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
2385     }
2386     # Two level structures
2387     foreach my $l1 (("sources", "shared_sources", "ldadd", "depends")) {
2388         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
2389             my @items =
2390                 sort
2391                 grep { $unified_info{$l1}->{$l2}->{$_} > 0 }
2392                 keys %{$unified_info{$l1}->{$l2}};
2393             if (@items) {
2394                 $unified_info{$l1}->{$l2} = [ @items ];
2395             } else {
2396                 delete $unified_info{$l1}->{$l2};
2397             }
2398         }
2399     }
2400     # Defines
2401     foreach my $dest (sort keys %{$unified_info{defines}}) {
2402         $unified_info{defines}->{$dest}
2403             = [ map { $_.$unified_info{defines}->{$dest}->{$_} }
2404                 sort keys %{$unified_info{defines}->{$dest}} ];
2405     }
2406     # Includes
2407     foreach my $dest (sort keys %{$unified_info{includes}}) {
2408         if (defined($unified_info{includes}->{$dest}->{build})) {
2409             my @source_includes = ();
2410             @source_includes = ( @{$unified_info{includes}->{$dest}->{source}} )
2411                 if defined($unified_info{includes}->{$dest}->{source});
2412             $unified_info{includes}->{$dest} =
2413                 [ @{$unified_info{includes}->{$dest}->{build}} ];
2414             foreach my $inc (@source_includes) {
2415                 push @{$unified_info{includes}->{$dest}}, $inc
2416                     unless grep { $_ eq $inc } @{$unified_info{includes}->{$dest}};
2417             }
2418         } elsif (defined($unified_info{includes}->{$dest}->{source})) {
2419             $unified_info{includes}->{$dest} =
2420                 [ @{$unified_info{includes}->{$dest}->{source}} ];
2421         } else {
2422             delete $unified_info{includes}->{$dest};
2423         }
2424     }
2425
2426     # For convenience collect information regarding directories where
2427     # files are generated, those generated files and the end product
2428     # they end up in where applicable.  Then, add build rules for those
2429     # directories
2430     my %loopinfo = ( "lib" => [ @{$unified_info{libraries}} ],
2431                      "dso" => [ @{$unified_info{modules}} ],
2432                      "bin" => [ @{$unified_info{programs}} ],
2433                      "script" => [ @{$unified_info{scripts}} ] );
2434     foreach my $type (keys %loopinfo) {
2435         foreach my $product (@{$loopinfo{$type}}) {
2436             my %dirs = ();
2437             my $pd = dirname($product);
2438
2439             foreach (@{$unified_info{sources}->{$product} // []},
2440                      @{$unified_info{shared_sources}->{$product} // []}) {
2441                 my $d = dirname($_);
2442
2443                 # We don't want to create targets for source directories
2444                 # when building out of source
2445                 next if ($config{sourcedir} ne $config{builddir}
2446                              && $d =~ m|^\Q$config{sourcedir}\E|);
2447                 # We already have a "test" target, and the current directory
2448                 # is just silly to make a target for
2449                 next if $d eq "test" || $d eq ".";
2450
2451                 $dirs{$d} = 1;
2452                 push @{$unified_info{dirinfo}->{$d}->{deps}}, $_
2453                     if $d ne $pd;
2454             }
2455             foreach (keys %dirs) {
2456                 push @{$unified_info{dirinfo}->{$_}->{products}->{$type}},
2457                     $product;
2458             }
2459         }
2460     }
2461 }
2462
2463 # For the schemes that need it, we provide the old *_obj configs
2464 # from the *_asm_obj ones
2465 foreach (grep /_(asm|aux)_src$/, keys %target) {
2466     my $src = $_;
2467     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
2468     $target{$obj} = $target{$src};
2469     $target{$obj} =~ s/\.[csS]\b/.o/g; # C and assembler
2470     $target{$obj} =~ s/\.(cc|cpp)\b/_cc.o/g; # C++
2471 }
2472
2473 # Write down our configuration where it fits #########################
2474
2475 print "Creating configdata.pm\n";
2476 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
2477 print OUT <<"EOF";
2478 #! $config{HASHBANGPERL}
2479
2480 package configdata;
2481
2482 use strict;
2483 use warnings;
2484
2485 use Exporter;
2486 #use vars qw(\@ISA \@EXPORT);
2487 our \@ISA = qw(Exporter);
2488 our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables \@disablables_int);
2489
2490 EOF
2491 print OUT "our %config = (\n";
2492 foreach (sort keys %config) {
2493     if (ref($config{$_}) eq "ARRAY") {
2494         print OUT "  ", $_, " => [ ", join(", ",
2495                                            map { quotify("perl", $_) }
2496                                            @{$config{$_}}), " ],\n";
2497     } elsif (ref($config{$_}) eq "HASH") {
2498         print OUT "  ", $_, " => {";
2499         if (scalar keys %{$config{$_}} > 0) {
2500             print OUT "\n";
2501             foreach my $key (sort keys %{$config{$_}}) {
2502                 print OUT "      ",
2503                     join(" => ",
2504                          quotify("perl", $key),
2505                          defined $config{$_}->{$key}
2506                              ? quotify("perl", $config{$_}->{$key})
2507                              : "undef");
2508                 print OUT ",\n";
2509             }
2510             print OUT "  ";
2511         }
2512         print OUT "},\n";
2513     } else {
2514         print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
2515     }
2516 }
2517 print OUT <<"EOF";
2518 );
2519
2520 EOF
2521 print OUT "our %target = (\n";
2522 foreach (sort keys %target) {
2523     if (ref($target{$_}) eq "ARRAY") {
2524         print OUT "  ", $_, " => [ ", join(", ",
2525                                            map { quotify("perl", $_) }
2526                                            @{$target{$_}}), " ],\n";
2527     } else {
2528         print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
2529     }
2530 }
2531 print OUT <<"EOF";
2532 );
2533
2534 EOF
2535 print OUT "our \%available_protocols = (\n";
2536 print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
2537 print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
2538 print OUT <<"EOF";
2539 );
2540
2541 EOF
2542 print OUT "our \@disablables = (\n";
2543 foreach (@disablables) {
2544     print OUT "  ", quotify("perl", $_), ",\n";
2545 }
2546 print OUT <<"EOF";
2547 );
2548
2549 EOF
2550 print OUT "# The following come from Configure's @disablables_int\n";
2551 print OUT "our \@disablables_int = (\n";
2552 foreach (@disablables_int) {
2553     print OUT "  ", quotify("perl", $_), ",\n";
2554 }
2555 print OUT <<"EOF";
2556 );
2557
2558 EOF
2559 print OUT "our \%disabled = (\n";
2560 foreach (sort keys %disabled) {
2561     print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
2562 }
2563 print OUT <<"EOF";
2564 );
2565
2566 EOF
2567 print OUT "our %withargs = (\n";
2568 foreach (sort keys %withargs) {
2569     if (ref($withargs{$_}) eq "ARRAY") {
2570         print OUT "  ", $_, " => [ ", join(", ",
2571                                            map { quotify("perl", $_) }
2572                                            @{$withargs{$_}}), " ],\n";
2573     } else {
2574         print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
2575     }
2576 }
2577 print OUT <<"EOF";
2578 );
2579
2580 EOF
2581 if ($builder eq "unified") {
2582     my $recurse;
2583     $recurse = sub {
2584         my $indent = shift;
2585         foreach (@_) {
2586             if (ref $_ eq "ARRAY") {
2587                 print OUT " "x$indent, "[\n";
2588                 foreach (@$_) {
2589                     $recurse->($indent + 4, $_);
2590                 }
2591                 print OUT " "x$indent, "],\n";
2592             } elsif (ref $_ eq "HASH") {
2593                 my %h = %$_;
2594                 print OUT " "x$indent, "{\n";
2595                 foreach (sort keys %h) {
2596                     if (ref $h{$_} eq "") {
2597                         print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
2598                     } else {
2599                         print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
2600                         $recurse->($indent + 8, $h{$_});
2601                     }
2602                 }
2603                 print OUT " "x$indent, "},\n";
2604             } else {
2605                 print OUT " "x$indent, quotify("perl", $_), ",\n";
2606             }
2607         }
2608     };
2609     print OUT "our %unified_info = (\n";
2610     foreach (sort keys %unified_info) {
2611         if (ref $unified_info{$_} eq "") {
2612             print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
2613         } else {
2614             print OUT " "x4, quotify("perl", $_), " =>\n";
2615             $recurse->(8, $unified_info{$_});
2616         }
2617     }
2618     print OUT <<"EOF";
2619 );
2620
2621 EOF
2622 }
2623 print OUT
2624     "# The following data is only used when this files is use as a script\n";
2625 print OUT "my \@makevars = (\n";
2626 foreach (sort keys %user) {
2627     print OUT "    '",$_,"',\n";
2628 }
2629 print OUT ");\n";
2630 print OUT "my \%disabled_info = (\n";
2631 foreach my $what (sort keys %disabled_info) {
2632     print OUT "    '$what' => {\n";
2633     foreach my $info (sort keys %{$disabled_info{$what}}) {
2634         if (ref $disabled_info{$what}->{$info} eq 'ARRAY') {
2635             print OUT "        $info => [ ",
2636                 join(', ', map { "'$_'" } @{$disabled_info{$what}->{$info}}),
2637                 " ],\n";
2638         } else {
2639             print OUT "        $info => '", $disabled_info{$what}->{$info},
2640                 "',\n";
2641         }
2642     }
2643     print OUT "    },\n";
2644 }
2645 print OUT ");\n";
2646 print OUT 'my @user_crossable = qw( ', join (' ', @user_crossable), " );\n";
2647 print OUT << 'EOF';
2648 # If run directly, we can give some answers, and even reconfigure
2649 unless (caller) {
2650     use Getopt::Long;
2651     use File::Spec::Functions;
2652     use File::Basename;
2653     use Pod::Usage;
2654
2655     my $here = dirname($0);
2656
2657     my $dump = undef;
2658     my $cmdline = undef;
2659     my $options = undef;
2660     my $target = undef;
2661     my $envvars = undef;
2662     my $makevars = undef;
2663     my $buildparams = undef;
2664     my $reconf = undef;
2665     my $verbose = undef;
2666     my $help = undef;
2667     my $man = undef;
2668     GetOptions('dump|d'                 => \$dump,
2669                'command-line|c'         => \$cmdline,
2670                'options|o'              => \$options,
2671                'target|t'               => \$target,
2672                'environment|e'          => \$envvars,
2673                'make-variables|m'       => \$makevars,
2674                'build-parameters|b'     => \$buildparams,
2675                'reconfigure|reconf|r'   => \$reconf,
2676                'verbose|v'              => \$verbose,
2677                'help'                   => \$help,
2678                'man'                    => \$man)
2679         or die "Errors in command line arguments\n";
2680
2681     unless ($dump || $cmdline || $options || $target || $envvars || $makevars
2682             || $buildparams || $reconf || $verbose || $help || $man) {
2683         print STDERR <<"_____";
2684 You must give at least one option.
2685 For more information, do '$0 --help'
2686 _____
2687         exit(2);
2688     }
2689
2690     if ($help) {
2691         pod2usage(-exitval => 0,
2692                   -verbose => 1);
2693     }
2694     if ($man) {
2695         pod2usage(-exitval => 0,
2696                   -verbose => 2);
2697     }
2698     if ($dump || $cmdline) {
2699         print "\nCommand line (with current working directory = $here):\n\n";
2700         print '    ',join(' ',
2701                           $config{PERL},
2702                           catfile($config{sourcedir}, 'Configure'),
2703                           @{$config{perlargv}}), "\n";
2704         print "\nPerl information:\n\n";
2705         print '    ',$config{perl_cmd},"\n";
2706         print '    ',$config{perl_version},' for ',$config{perl_archname},"\n";
2707     }
2708     if ($dump || $options) {
2709         my $longest = 0;
2710         my $longest2 = 0;
2711         foreach my $what (@disablables) {
2712             $longest = length($what) if $longest < length($what);
2713             $longest2 = length($disabled{$what})
2714                 if $disabled{$what} && $longest2 < length($disabled{$what});
2715         }
2716         print "\nEnabled features:\n\n";
2717         foreach my $what (@disablables) {
2718             print "    $what\n" unless $disabled{$what};
2719         }
2720         print "\nDisabled features:\n\n";
2721         foreach my $what (@disablables) {
2722             if ($disabled{$what}) {
2723                 print "    $what", ' ' x ($longest - length($what) + 1),
2724                     "[$disabled{$what}]", ' ' x ($longest2 - length($disabled{$what}) + 1);
2725                 print $disabled_info{$what}->{macro}
2726                     if $disabled_info{$what}->{macro};
2727                 print ' (skip ',
2728                     join(', ', @{$disabled_info{$what}->{skipped}}),
2729                     ')'
2730                     if $disabled_info{$what}->{skipped};
2731                 print "\n";
2732             }
2733         }
2734     }
2735     if ($dump || $target) {
2736         print "\nConfig target attributes:\n\n";
2737         foreach (sort keys %target) {
2738             next if $_ =~ m|^_| || $_ eq 'template';
2739             my $quotify = sub {
2740                 map { (my $x = $_) =~ s|([\\\$\@"])|\\$1|g; "\"$x\""} @_;
2741             };
2742             print '    ', $_, ' => ';
2743             if (ref($target{$_}) eq "ARRAY") {
2744                 print '[ ', join(', ', $quotify->(@{$target{$_}})), " ],\n";
2745             } else {
2746                 print $quotify->($target{$_}), ",\n"
2747             }
2748         }
2749     }
2750     if ($dump || $envvars) {
2751         print "\nRecorded environment:\n\n";
2752         foreach (sort keys %{$config{perlenv}}) {
2753             print '    ',$_,' = ',($config{perlenv}->{$_} || ''),"\n";
2754         }
2755     }
2756     if ($dump || $makevars) {
2757         print "\nMakevars:\n\n";
2758         foreach my $var (@makevars) {
2759             my $prefix = '';
2760             $prefix = $config{CROSS_COMPILE}
2761                 if grep { $var eq $_ } @user_crossable;
2762             $prefix //= '';
2763             print '    ',$var,' ' x (16 - length $var),'= ',
2764                 (ref $config{$var} eq 'ARRAY'
2765                  ? join(' ', @{$config{$var}})
2766                  : $prefix.$config{$var}),
2767                 "\n"
2768                 if defined $config{$var};
2769         }
2770
2771         my @buildfile = ($config{builddir}, $config{build_file});
2772         unshift @buildfile, $here
2773             unless file_name_is_absolute($config{builddir});
2774         my $buildfile = canonpath(catdir(@buildfile));
2775         print <<"_____";
2776
2777 NOTE: These variables only represent the configuration view.  The build file
2778 template may have processed these variables further, please have a look at the
2779 build file for more exact data:
2780     $buildfile
2781 _____
2782     }
2783     if ($dump || $buildparams) {
2784         my @buildfile = ($config{builddir}, $config{build_file});
2785         unshift @buildfile, $here
2786             unless file_name_is_absolute($config{builddir});
2787         print "\nbuild file:\n\n";
2788         print "    ", canonpath(catfile(@buildfile)),"\n";
2789
2790         print "\nbuild file templates:\n\n";
2791         foreach (@{$config{build_file_templates}}) {
2792             my @tmpl = ($_);
2793             unshift @tmpl, $here
2794                 unless file_name_is_absolute($config{sourcedir});
2795             print '    ',canonpath(catfile(@tmpl)),"\n";
2796         }
2797     }
2798     if ($reconf) {
2799         if ($verbose) {
2800             print 'Reconfiguring with: ', join(' ',@{$config{perlargv}}), "\n";
2801             foreach (sort keys %{$config{perlenv}}) {
2802                 print '    ',$_,' = ',($config{perlenv}->{$_} || ""),"\n";
2803             }
2804         }
2805
2806         chdir $here;
2807         exec $^X,catfile($config{sourcedir}, 'Configure'),'reconf';
2808     }
2809 }
2810
2811 1;
2812
2813 __END__
2814
2815 =head1 NAME
2816
2817 configdata.pm - configuration data for OpenSSL builds
2818
2819 =head1 SYNOPSIS
2820
2821 Interactive:
2822
2823   perl configdata.pm [options]
2824
2825 As data bank module:
2826
2827   use configdata;
2828
2829 =head1 DESCRIPTION
2830
2831 This module can be used in two modes, interactively and as a module containing
2832 all the data recorded by OpenSSL's Configure script.
2833
2834 When used interactively, simply run it as any perl script, with at least one
2835 option, and you will get the information you ask for.  See L</OPTIONS> below.
2836
2837 When loaded as a module, you get a few databanks with useful information to
2838 perform build related tasks.  The databanks are:
2839
2840     %config             Configured things.
2841     %target             The OpenSSL config target with all inheritances
2842                         resolved.
2843     %disabled           The features that are disabled.
2844     @disablables        The list of features that can be disabled.
2845     %withargs           All data given through --with-THING options.
2846     %unified_info       All information that was computed from the build.info
2847                         files.
2848
2849 =head1 OPTIONS
2850
2851 =over 4
2852
2853 =item B<--help>
2854
2855 Print a brief help message and exit.
2856
2857 =item B<--man>
2858
2859 Print the manual page and exit.
2860
2861 =item B<--dump> | B<-d>
2862
2863 Print all relevant configuration data.  This is equivalent to B<--command-line>
2864 B<--options> B<--target> B<--environment> B<--make-variables>
2865 B<--build-parameters>.
2866
2867 =item B<--command-line> | B<-c>
2868
2869 Print the current configuration command line.
2870
2871 =item B<--options> | B<-o>
2872
2873 Print the features, both enabled and disabled, and display defined macro and
2874 skipped directories where applicable.
2875
2876 =item B<--target> | B<-t>
2877
2878 Print the config attributes for this config target.
2879
2880 =item B<--environment> | B<-e>
2881
2882 Print the environment variables and their values at the time of configuration.
2883
2884 =item B<--make-variables> | B<-m>
2885
2886 Print the main make variables generated in the current configuration
2887
2888 =item B<--build-parameters> | B<-b>
2889
2890 Print the build parameters, i.e. build file and build file templates.
2891
2892 =item B<--reconfigure> | B<--reconf> | B<-r>
2893
2894 Redo the configuration.
2895
2896 =item B<--verbose> | B<-v>
2897
2898 Verbose output.
2899
2900 =back
2901
2902 =cut
2903
2904 EOF
2905 close(OUT);
2906 if ($builder_platform eq 'unix') {
2907     my $mode = (0755 & ~umask);
2908     chmod $mode, 'configdata.pm'
2909         or warn sprintf("WARNING: Couldn't change mode for 'configdata.pm' to 0%03o: %s\n",$mode,$!);
2910 }
2911
2912 my %builders = (
2913     unified => sub {
2914         print 'Creating ',$target{build_file},"\n";
2915         run_dofile(catfile($blddir, $target{build_file}),
2916                    @{$config{build_file_templates}});
2917     },
2918     );
2919
2920 $builders{$builder}->($builder_platform, @builder_opts);
2921
2922 $SIG{__DIE__} = $orig_death_handler;
2923
2924 print <<"EOF" if ($disabled{threads} eq "unavailable");
2925
2926 The library could not be configured for supporting multi-threaded
2927 applications as the compiler options required on this system are not known.
2928 See file INSTALL for details if you need multi-threading.
2929 EOF
2930
2931 print <<"EOF" if ($no_shared_warn);
2932
2933 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
2934 platform, so we will pretend you gave the option 'no-pic', which also disables
2935 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
2936 or position independent code, please let us know (but please first make sure
2937 you have tried with a current version of OpenSSL).
2938 EOF
2939
2940 print <<"EOF";
2941
2942 **********************************************************************
2943 ***                                                                ***
2944 ***   OpenSSL has been successfully configured                     ***
2945 ***                                                                ***
2946 ***   If you encounter a problem while building, please open an    ***
2947 ***   issue on GitHub <https://github.com/openssl/openssl/issues>  ***
2948 ***   and include the output from the following command:           ***
2949 ***                                                                ***
2950 ***       perl configdata.pm --dump                                ***
2951 ***                                                                ***
2952 ***   (If you are new to OpenSSL, you might want to consult the    ***
2953 ***   'Troubleshooting' section in the INSTALL file first)         ***
2954 ***                                                                ***
2955 **********************************************************************
2956 EOF
2957
2958 exit(0);
2959
2960 ######################################################################
2961 #
2962 # Helpers and utility functions
2963 #
2964
2965 # Death handler, to print a helpful message in case of failure #######
2966 #
2967 sub death_handler {
2968     die @_ if $^S;              # To prevent the added message in eval blocks
2969     my $build_file = $target{build_file} // "build file";
2970     my @message = ( <<"_____", @_ );
2971
2972 Failure!  $build_file wasn't produced.
2973 Please read INSTALL and associated NOTES files.  You may also have to look over
2974 your available compiler tool chain or change your configuration.
2975
2976 _____
2977
2978     # Dying is terminal, so it's ok to reset the signal handler here.
2979     $SIG{__DIE__} = $orig_death_handler;
2980     die @message;
2981 }
2982
2983 # Configuration file reading #########################################
2984
2985 # Note: All of the helper functions are for lazy evaluation.  They all
2986 # return a CODE ref, which will return the intended value when evaluated.
2987 # Thus, whenever there's mention of a returned value, it's about that
2988 # intended value.
2989
2990 # Helper function to implement conditional inheritance depending on the
2991 # value of $disabled{asm}.  Used in inherit_from values as follows:
2992 #
2993 #      inherit_from => [ "template", asm("asm_tmpl") ]
2994 #
2995 sub asm {
2996     my @x = @_;
2997     sub {
2998         $disabled{asm} ? () : @x;
2999     }
3000 }
3001
3002 # Helper function to implement conditional value variants, with a default
3003 # plus additional values based on the value of $config{build_type}.
3004 # Arguments are given in hash table form:
3005 #
3006 #       picker(default => "Basic string: ",
3007 #              debug   => "debug",
3008 #              release => "release")
3009 #
3010 # When configuring with --debug, the resulting string will be
3011 # "Basic string: debug", and when not, it will be "Basic string: release"
3012 #
3013 # This can be used to create variants of sets of flags according to the
3014 # build type:
3015 #
3016 #       cflags => picker(default => "-Wall",
3017 #                        debug   => "-g -O0",
3018 #                        release => "-O3")
3019 #
3020 sub picker {
3021     my %opts = @_;
3022     return sub { add($opts{default} || (),
3023                      $opts{$config{build_type}} || ())->(); }
3024 }
3025
3026 # Helper function to combine several values of different types into one.
3027 # This is useful if you want to combine a string with the result of a
3028 # lazy function, such as:
3029 #
3030 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
3031 #
3032 sub combine {
3033     my @stuff = @_;
3034     return sub { add(@stuff)->(); }
3035 }
3036
3037 # Helper function to implement conditional values depending on the value
3038 # of $disabled{threads}.  Can be used as follows:
3039 #
3040 #       cflags => combine("-Wall", threads("-pthread"))
3041 #
3042 sub threads {
3043     my @flags = @_;
3044     return sub { add($disabled{threads} ? () : @flags)->(); }
3045 }
3046
3047 sub shared {
3048     my @flags = @_;
3049     return sub { add($disabled{shared} ? () : @flags)->(); }
3050 }
3051
3052 our $add_called = 0;
3053 # Helper function to implement adding values to already existing configuration
3054 # values.  It handles elements that are ARRAYs, CODEs and scalars
3055 sub _add {
3056     my $separator = shift;
3057
3058     # If there's any ARRAY in the collection of values OR the separator
3059     # is undef, we will return an ARRAY of combined values, otherwise a
3060     # string of joined values with $separator as the separator.
3061     my $found_array = !defined($separator);
3062
3063     my @values =
3064         map {
3065             my $res = $_;
3066             while (ref($res) eq "CODE") {
3067                 $res = $res->();
3068             }
3069             if (defined($res)) {
3070                 if (ref($res) eq "ARRAY") {
3071                     $found_array = 1;
3072                     @$res;
3073                 } else {
3074                     $res;
3075                 }
3076             } else {
3077                 ();
3078             }
3079     } (@_);
3080
3081     $add_called = 1;
3082
3083     if ($found_array) {
3084         [ @values ];
3085     } else {
3086         join($separator, grep { defined($_) && $_ ne "" } @values);
3087     }
3088 }
3089 sub add_before {
3090     my $separator = " ";
3091     if (ref($_[$#_]) eq "HASH") {
3092         my $opts = pop;
3093         $separator = $opts->{separator};
3094     }
3095     my @x = @_;
3096     sub { _add($separator, @x, @_) };
3097 }
3098 sub add {
3099     my $separator = " ";
3100     if (ref($_[$#_]) eq "HASH") {
3101         my $opts = pop;
3102         $separator = $opts->{separator};
3103     }
3104     my @x = @_;
3105     sub { _add($separator, @_, @x) };
3106 }
3107
3108 sub read_eval_file {
3109     my $fname = shift;
3110     my $content;
3111     my @result;
3112
3113     open F, "< $fname" or die "Can't open '$fname': $!\n";
3114     {
3115         undef local $/;
3116         $content = <F>;
3117     }
3118     close F;
3119     {
3120         local $@;
3121
3122         @result = ( eval $content );
3123         warn $@ if $@;
3124     }
3125     return wantarray ? @result : $result[0];
3126 }
3127
3128 # configuration reader, evaluates the input file as a perl script and expects
3129 # it to fill %targets with target configurations.  Those are then added to
3130 # %table.
3131 sub read_config {
3132     my $fname = shift;
3133     my %targets;
3134
3135     {
3136         # Protect certain tables from tampering
3137         local %table = ();
3138
3139         %targets = read_eval_file($fname);
3140     }
3141     my %preexisting = ();
3142     foreach (sort keys %targets) {
3143         $preexisting{$_} = 1 if $table{$_};
3144     }
3145     die <<"EOF",
3146 The following config targets from $fname
3147 shadow pre-existing config targets with the same name:
3148 EOF
3149         map { "  $_\n" } sort keys %preexisting
3150         if %preexisting;
3151
3152
3153     # For each target, check that it's configured with a hash table.
3154     foreach (keys %targets) {
3155         if (ref($targets{$_}) ne "HASH") {
3156             if (ref($targets{$_}) eq "") {
3157                 warn "Deprecated target configuration for $_, ignoring...\n";
3158             } else {
3159                 warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
3160             }
3161             delete $targets{$_};
3162         } else {
3163             $targets{$_}->{_conf_fname_int} = add([ $fname ]);
3164         }
3165     }
3166
3167     %table = (%table, %targets);
3168
3169 }
3170
3171 # configuration resolver.  Will only resolve all the lazy evaluation
3172 # codeblocks for the chosen target and all those it inherits from,
3173 # recursively
3174 sub resolve_config {
3175     my $target = shift;
3176     my @breadcrumbs = @_;
3177
3178 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
3179
3180     if (grep { $_ eq $target } @breadcrumbs) {
3181         die "inherit_from loop!  target backtrace:\n  "
3182             ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
3183     }
3184
3185     if (!defined($table{$target})) {
3186         warn "Warning! target $target doesn't exist!\n";
3187         return ();
3188     }
3189     # Recurse through all inheritances.  They will be resolved on the
3190     # fly, so when this operation is done, they will all just be a
3191     # bunch of attributes with string values.
3192     # What we get here, though, are keys with references to lists of
3193     # the combined values of them all.  We will deal with lists after
3194     # this stage is done.
3195     my %combined_inheritance = ();
3196     if ($table{$target}->{inherit_from}) {
3197         my @inherit_from =
3198             map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
3199         foreach (@inherit_from) {
3200             my %inherited_config = resolve_config($_, $target, @breadcrumbs);
3201
3202             # 'template' is a marker that's considered private to
3203             # the config that had it.
3204             delete $inherited_config{template};
3205
3206             foreach (keys %inherited_config) {
3207                 if (!$combined_inheritance{$_}) {
3208                     $combined_inheritance{$_} = [];
3209                 }
3210                 push @{$combined_inheritance{$_}}, $inherited_config{$_};
3211             }
3212         }
3213     }
3214
3215     # We won't need inherit_from in this target any more, since we've
3216     # resolved all the inheritances that lead to this
3217     delete $table{$target}->{inherit_from};
3218
3219     # Now is the time to deal with those lists.  Here's the place to
3220     # decide what shall be done with those lists, all based on the
3221     # values of the target we're currently dealing with.
3222     # - If a value is a coderef, it will be executed with the list of
3223     #   inherited values as arguments.
3224     # - If the corresponding key doesn't have a value at all or is the
3225     #   empty string, the inherited value list will be run through the
3226     #   default combiner (below), and the result becomes this target's
3227     #   value.
3228     # - Otherwise, this target's value is assumed to be a string that
3229     #   will simply override the inherited list of values.
3230     my $default_combiner = add();
3231
3232     my %all_keys =
3233         map { $_ => 1 } (keys %combined_inheritance,
3234                          keys %{$table{$target}});
3235
3236     sub process_values {
3237         my $object    = shift;
3238         my $inherited = shift;  # Always a [ list ]
3239         my $target    = shift;
3240         my $entry     = shift;
3241
3242         $add_called = 0;
3243
3244         while(ref($object) eq "CODE") {
3245             $object = $object->(@$inherited);
3246         }
3247         if (!defined($object)) {
3248             return ();
3249         }
3250         elsif (ref($object) eq "ARRAY") {
3251             local $add_called;  # To make sure recursive calls don't affect it
3252             return [ map { process_values($_, $inherited, $target, $entry) }
3253                      @$object ];
3254         } elsif (ref($object) eq "") {
3255             return $object;
3256         } else {
3257             die "cannot handle reference type ",ref($object)
3258                 ," found in target ",$target," -> ",$entry,"\n";
3259         }
3260     }
3261
3262     foreach (sort keys %all_keys) {
3263         my $previous = $combined_inheritance{$_};
3264
3265         # Current target doesn't have a value for the current key?
3266         # Assign it the default combiner, the rest of this loop body
3267         # will handle it just like any other coderef.
3268         if (!exists $table{$target}->{$_}) {
3269             $table{$target}->{$_} = $default_combiner;
3270         }
3271
3272         $table{$target}->{$_} = process_values($table{$target}->{$_},
3273                                                $combined_inheritance{$_},
3274                                                $target, $_);
3275         unless(defined($table{$target}->{$_})) {
3276             delete $table{$target}->{$_};
3277         }
3278 #        if ($extra_checks &&
3279 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
3280 #            warn "$_ got replaced in $target\n";
3281 #        }
3282     }
3283
3284     # Finally done, return the result.
3285     return %{$table{$target}};
3286 }
3287
3288 sub usage
3289         {
3290         print STDERR $usage;
3291         print STDERR "\npick os/compiler from:\n";
3292         my $j=0;
3293         my $i;
3294         my $k=0;
3295         foreach $i (sort keys %table)
3296                 {
3297                 next if $table{$i}->{template};
3298                 next if $i =~ /^debug/;
3299                 $k += length($i) + 1;
3300                 if ($k > 78)
3301                         {
3302                         print STDERR "\n";
3303                         $k=length($i);
3304                         }
3305                 print STDERR $i . " ";
3306                 }
3307         foreach $i (sort keys %table)
3308                 {
3309                 next if $table{$i}->{template};
3310                 next if $i !~ /^debug/;
3311                 $k += length($i) + 1;
3312                 if ($k > 78)
3313                         {
3314                         print STDERR "\n";
3315                         $k=length($i);
3316                         }
3317                 print STDERR $i . " ";
3318                 }
3319         print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
3320         exit(1);
3321         }
3322
3323 sub run_dofile
3324 {
3325     my $out = shift;
3326     my @templates = @_;
3327
3328     unlink $out || warn "Can't remove $out, $!"
3329         if -f $out;
3330     foreach (@templates) {
3331         die "Can't open $_, $!" unless -f $_;
3332     }
3333     my $perlcmd = (quotify("maybeshell", $config{PERL}))[0];
3334     my $cmd = "$perlcmd \"-I.\" \"-Mconfigdata\" \"$dofile\" -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
3335     #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
3336     system($cmd);
3337     exit 1 if $? != 0;
3338     rename("$out.new", $out) || die "Can't rename $out.new, $!";
3339 }
3340
3341 sub compiler_predefined {
3342     state %predefined;
3343     my $cc = shift;
3344
3345     return () if $^O eq 'VMS';
3346
3347     die 'compiler_predefined called without a compiler command'
3348         unless $cc;
3349
3350     if (! $predefined{$cc}) {
3351
3352         $predefined{$cc} = {};
3353
3354         # collect compiler pre-defines from gcc or gcc-alike...
3355         open(PIPE, "$cc -dM -E -x c /dev/null 2>&1 |");
3356         while (my $l = <PIPE>) {
3357             $l =~ m/^#define\s+(\w+(?:\(\w+\))?)(?:\s+(.+))?/ or last;
3358             $predefined{$cc}->{$1} = $2 // '';
3359         }
3360         close(PIPE);
3361     }
3362
3363     return %{$predefined{$cc}};
3364 }
3365
3366 sub which
3367 {
3368     my ($name)=@_;
3369
3370     if (eval { require IPC::Cmd; 1; }) {
3371         IPC::Cmd->import();
3372         return scalar IPC::Cmd::can_run($name);
3373     } else {
3374         # if there is $directories component in splitpath,
3375         # then it's not something to test with $PATH...
3376         return $name if (File::Spec->splitpath($name))[1];
3377
3378         foreach (File::Spec->path()) {
3379             my $fullpath = catfile($_, "$name$target{exe_extension}");
3380             if (-f $fullpath and -x $fullpath) {
3381                 return $fullpath;
3382             }
3383         }
3384     }
3385 }
3386
3387 sub env
3388 {
3389     my $name = shift;
3390     my %opts = @_;
3391
3392     unless ($opts{cacheonly}) {
3393         # Note that if $ENV{$name} doesn't exist or is undefined,
3394         # $config{perlenv}->{$name} will be created with the value
3395         # undef.  This is intentional.
3396
3397         $config{perlenv}->{$name} = $ENV{$name}
3398             if ! exists $config{perlenv}->{$name};
3399     }
3400     return $config{perlenv}->{$name};
3401 }
3402
3403 # Configuration printer ##############################################
3404
3405 sub print_table_entry
3406 {
3407     local $now_printing = shift;
3408     my %target = resolve_config($now_printing);
3409     my $type = shift;
3410
3411     # Don't print the templates
3412     return if $target{template};
3413
3414     my @sequence = (
3415         "sys_id",
3416         "cpp",
3417         "cppflags",
3418         "defines",
3419         "includes",
3420         "cc",
3421         "cflags",
3422         "unistd",
3423         "ld",
3424         "lflags",
3425         "loutflag",
3426         "ex_libs",
3427         "bn_ops",
3428         "apps_aux_src",
3429         "cpuid_asm_src",
3430         "uplink_aux_src",
3431         "bn_asm_src",
3432         "ec_asm_src",
3433         "des_asm_src",
3434         "aes_asm_src",
3435         "bf_asm_src",
3436         "md5_asm_src",
3437         "cast_asm_src",
3438         "sha1_asm_src",
3439         "rc4_asm_src",
3440         "rmd160_asm_src",
3441         "rc5_asm_src",
3442         "wp_asm_src",
3443         "cmll_asm_src",
3444         "modes_asm_src",
3445         "padlock_asm_src",
3446         "chacha_asm_src",
3447         "poly1035_asm_src",
3448         "thread_scheme",
3449         "perlasm_scheme",
3450         "dso_scheme",
3451         "shared_target",
3452         "shared_cflag",
3453         "shared_defines",
3454         "shared_ldflag",
3455         "shared_rcflag",
3456         "shared_extension",
3457         "dso_extension",
3458         "obj_extension",
3459         "exe_extension",
3460         "ranlib",
3461         "ar",
3462         "arflags",
3463         "aroutflag",
3464         "rc",
3465         "rcflags",
3466         "rcoutflag",
3467         "mt",
3468         "mtflags",
3469         "mtinflag",
3470         "mtoutflag",
3471         "multilib",
3472         "build_scheme",
3473         );
3474
3475     if ($type eq "TABLE") {
3476         print "\n";
3477         print "*** $now_printing\n";
3478         foreach (@sequence) {
3479             if (ref($target{$_}) eq "ARRAY") {
3480                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
3481             } else {
3482                 printf "\$%-12s = %s\n", $_, $target{$_};
3483             }
3484         }
3485     } elsif ($type eq "HASH") {
3486         my $largest =
3487             length((sort { length($a) <=> length($b) } @sequence)[-1]);
3488         print "    '$now_printing' => {\n";
3489         foreach (@sequence) {
3490             if ($target{$_}) {
3491                 if (ref($target{$_}) eq "ARRAY") {
3492                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
3493                 } else {
3494                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
3495                 }
3496             }
3497         }
3498         print "    },\n";
3499     }
3500 }
3501
3502 # Utility routines ###################################################
3503
3504 # On VMS, if the given file is a logical name, File::Spec::Functions
3505 # will consider it an absolute path.  There are cases when we want a
3506 # purely syntactic check without checking the environment.
3507 sub isabsolute {
3508     my $file = shift;
3509
3510     # On non-platforms, we just use file_name_is_absolute().
3511     return file_name_is_absolute($file) unless $^O eq "VMS";
3512
3513     # If the file spec includes a device or a directory spec,
3514     # file_name_is_absolute() is perfectly safe.
3515     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
3516
3517     # Here, we know the given file spec isn't absolute
3518     return 0;
3519 }
3520
3521 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
3522 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
3523 # realpath() requires that at least all path components except the last is an
3524 # existing directory.  On VMS, the last component of the directory spec must
3525 # exist.
3526 sub absolutedir {
3527     my $dir = shift;
3528
3529     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
3530     # will return the volume name for the device, no matter what.  Also,
3531     # it will return an incorrect directory spec if the argument is a
3532     # directory that doesn't exist.
3533     if ($^O eq "VMS") {
3534         return rel2abs($dir);
3535     }
3536
3537     # We use realpath() on Unix, since no other will properly clean out
3538     # a directory spec.
3539     use Cwd qw/realpath/;
3540
3541     return realpath($dir);
3542 }
3543
3544 sub quotify {
3545     my %processors = (
3546         perl    => sub { my $x = shift;
3547                          $x =~ s/([\\\$\@"])/\\$1/g;
3548                          return '"'.$x.'"'; },
3549         maybeshell => sub { my $x = shift;
3550                             (my $y = $x) =~ s/([\\\"])/\\$1/g;
3551                             if ($x ne $y || $x =~ m|\s|) {
3552                                 return '"'.$y.'"';
3553                             } else {
3554                                 return $x;
3555                             }
3556                         },
3557         );
3558     my $for = shift;
3559     my $processor =
3560         defined($processors{$for}) ? $processors{$for} : sub { shift; };
3561
3562     return map { $processor->($_); } @_;
3563 }
3564
3565 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
3566 # $filename is a file name to read from
3567 # $line_concat_cond_re is a regexp detecting a line continuation ending
3568 # $line_concat is a CODEref that takes care of concatenating two lines
3569 sub collect_from_file {
3570     my $filename = shift;
3571     my $line_concat_cond_re = shift;
3572     my $line_concat = shift;
3573
3574     open my $fh, $filename || die "unable to read $filename: $!\n";
3575     return sub {
3576         my $saved_line = "";
3577         $_ = "";
3578         while (<$fh>) {
3579             s|\R$||;
3580             if (defined $line_concat) {
3581                 $_ = $line_concat->($saved_line, $_);
3582                 $saved_line = "";
3583             }
3584             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3585                 $saved_line = $_;
3586                 next;
3587             }
3588             return $_;
3589         }
3590         die "$filename ending with continuation line\n" if $_;
3591         close $fh;
3592         return undef;
3593     }
3594 }
3595
3596 # collect_from_array($array, $line_concat_cond_re, $line_concat)
3597 # $array is an ARRAYref of lines
3598 # $line_concat_cond_re is a regexp detecting a line continuation ending
3599 # $line_concat is a CODEref that takes care of concatenating two lines
3600 sub collect_from_array {
3601     my $array = shift;
3602     my $line_concat_cond_re = shift;
3603     my $line_concat = shift;
3604     my @array = (@$array);
3605
3606     return sub {
3607         my $saved_line = "";
3608         $_ = "";
3609         while (defined($_ = shift @array)) {
3610             s|\R$||;
3611             if (defined $line_concat) {
3612                 $_ = $line_concat->($saved_line, $_);
3613                 $saved_line = "";
3614             }
3615             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3616                 $saved_line = $_;
3617                 next;
3618             }
3619             return $_;
3620         }
3621         die "input text ending with continuation line\n" if $_;
3622         return undef;
3623     }
3624 }
3625
3626 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
3627 # $lineiterator is a CODEref that delivers one line at a time.
3628 # All following arguments are regex/CODEref pairs, where the regexp detects a
3629 # line and the CODEref does something with the result of the regexp.
3630 sub collect_information {
3631     my $lineiterator = shift;
3632     my %collectors = @_;
3633
3634     while(defined($_ = $lineiterator->())) {
3635         s|\R$||;
3636         my $found = 0;
3637         if ($collectors{"BEFORE"}) {
3638             $collectors{"BEFORE"}->($_);
3639         }
3640         foreach my $re (keys %collectors) {
3641             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
3642                 $collectors{$re}->($lineiterator);
3643                 $found = 1;
3644             };
3645         }
3646         if ($collectors{"OTHERWISE"}) {
3647             $collectors{"OTHERWISE"}->($lineiterator, $_)
3648                 unless $found || !defined $collectors{"OTHERWISE"};
3649         }
3650         if ($collectors{"AFTER"}) {
3651             $collectors{"AFTER"}->($_);
3652         }
3653     }
3654 }
3655
3656 # tokenize($line)
3657 # tokenize($line,$separator)
3658 # $line is a line of text to split up into tokens
3659 # $separator [optional] is a regular expression that separates the tokens,
3660 # the default being spaces.  Do not use quotes of any kind as separators,
3661 # that will give undefined results.
3662 # Returns a list of tokens.
3663 #
3664 # Tokens are divided by separator (spaces by default).  If the tokens include
3665 # the separators, they have to be quoted with single or double quotes.
3666 # Double quotes inside a double quoted token must be escaped.  Escaping is done
3667 # with backslash.
3668 # Basically, the same quoting rules apply for " and ' as in any
3669 # Unix shell.
3670 sub tokenize {
3671     my $line = my $debug_line = shift;
3672     my $separator = shift // qr|\s+|;
3673     my @result = ();
3674
3675     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
3676         print STDERR "DEBUG[tokenize]: \$separator = $separator\n";
3677     }
3678
3679     while ($line =~ s|^${separator}||, $line ne "") {
3680         my $token = "";
3681     again:
3682         $line =~ m/^(.*?)(${separator}|"|'|$)/;
3683         $token .= $1;
3684         $line = $2.$';
3685
3686         if ($line =~ m/^"((?:[^"\\]+|\\.)*)"/) {
3687             $token .= $1;
3688             $line = $';
3689             goto again;
3690         } elsif ($line =~ m/^'([^']*)'/) {
3691             $token .= $1;
3692             $line = $';
3693             goto again;
3694         }
3695         push @result, $token;
3696     }
3697
3698     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
3699         print STDERR "DEBUG[tokenize]: Parsed '$debug_line' into:\n";
3700         print STDERR "DEBUG[tokenize]: ('", join("', '", @result), "')\n";
3701     }
3702     return @result;
3703 }