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", "sm2" ],
 486     sub { $disabled{"ec"} && $disabled{"dh"} }
 487                         => [ "tls1_3" ],
 488     "dgram"             => [ "dtls", "sctp" ],
 489     "sock"              => [ "dgram" ],
 490     "dtls"              => [ @dtls ],
 491     sub { 0 == scalar grep { !$disabled{$_} } @dtls }
 492                         => [ "dtls" ],
 493
 494     "tls"               => [ @tls ],
 495     sub { 0 == scalar grep { !$disabled{$_} } @tls }
 496                         => [ "tls" ],
 497
 498     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
 499
 500     # If no modules, then no dynamic engines either
 501     "module"            => [ "dynamic-engine" ],
 502
 503     # Without shared libraries, dynamic engines aren't possible.
 504     # This is due to them having to link with libcrypto and register features
 505     # using the ENGINE functionality, and since that relies on global tables,
 506     # those *have* to be exacty the same as the ones accessed from the app,
 507     # which cannot be guaranteed if shared libraries aren't present.
 508     # (note that even with shared libraries, both the app and dynamic engines
 509     # must be linked with the same library)
 510     "shared"            => [ "dynamic-engine", "uplink" ],
 511     # Other modules don't necessarily have to link with libcrypto, so shared
 512     # libraries do not have to be a condition to produce those.
 513
 514     # Without position independent code, there can be no shared libraries
 515     # or modules.
 516     "pic"               => [ "shared", "module" ],
 517
 518     "module"            => [ "fips", "legacy" ],
 519
 520     "engine"            => [ grep /eng$/, @disablables ],
 521     "hw"                => [ "padlockeng" ],
 522
 523     # no-autoalginit is only useful when building non-shared
 524     "autoalginit"       => [ "shared", "apps" ],
 525
 526     "stdio"             => [ "apps", "capieng", "egd" ],
 527     "apps"              => [ "tests" ],
 528     "tests"             => [ "external-tests" ],
 529     "comp"              => [ "zlib" ],
 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, !! $expand_variables->($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] = !! $expand_variables->($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                     my $n = $1;
1906                     my $v = $2;
1907                     $variables{$n} = $expand_variables->($v);
1908                 }
1909             },
1910             qr/^\s*SUBDIRS\s*=\s*(.*)\s*$/
1911             => sub {
1912                 if (!@skip || $skip[$#skip] > 0) {
1913                     foreach (tokenize($expand_variables->($1))) {
1914                         push @build_dirs, [ @curd, splitdir($_, 1) ];
1915                     }
1916                 }
1917             },
1918             qr/^\s*PROGRAMS(?:{([\w=]+(?:\s*,\s*[\w=]+)*)})?\s*=\s*(.*)\s*$/
1919             => sub {
1920                 if (!@skip || $skip[$#skip] > 0) {
1921                     my @a = tokenize($1, qr|\s*,\s*|);
1922                     my @p = tokenize($expand_variables->($2));
1923                     push @programs, @p;
1924                     foreach my $a (@a) {
1925                         my $ak = $a;
1926                         my $av = 1;
1927                         if ($a =~ m|^(.*?)\s*=\s*(.*?)$|) {
1928                             $ak = $1;
1929                             $av = $2;
1930                         }
1931                         foreach my $p (@p) {
1932                             $attributes{$p}->{$ak} = $av;
1933                         }
1934                     }
1935                 }
1936             },
1937             qr/^\s*LIBS(?:{([\w=]+(?:\s*,\s*[\w=]+)*)})?\s*=\s*(.*)\s*$/
1938             => sub {
1939                 if (!@skip || $skip[$#skip] > 0) {
1940                     my @a = tokenize($1, qr|\s*,\s*|);
1941                     my @l = tokenize($expand_variables->($2));
1942                     push @libraries, @l;
1943                     foreach my $a (@a) {
1944                         my $ak = $a;
1945                         my $av = 1;
1946                         if ($a =~ m|^(.*?)\s*=\s*(.*?)$|) {
1947                             $ak = $1;
1948                             $av = $2;
1949                         }
1950                         foreach my $l (@l) {
1951                             $attributes{$l}->{$ak} = $av;
1952                         }
1953                     }
1954                 }
1955             },
1956             qr/^\s*MODULES(?:{([\w=]+(?:\s*,\s*[\w=]+)*)})?\s*=\s*(.*)\s*$/
1957             => sub {
1958                 if (!@skip || $skip[$#skip] > 0) {
1959                     my @a = tokenize($1, qr|\s*,\s*|);
1960                     my @m = tokenize($expand_variables->($2));
1961                     push @modules, @m;
1962                     foreach my $a (@a) {
1963                         my $ak = $a;
1964                         my $av = 1;
1965                         if ($a =~ m|^(.*?)\s*=\s*(.*?)$|) {
1966                             $ak = $1;
1967                             $av = $2;
1968                         }
1969                         foreach my $m (@m) {
1970                             $attributes{$m}->{$ak} = $av;
1971                         }
1972                     }
1973                 }
1974             },
1975             qr/^\s*SCRIPTS(?:{([\w=]+(?:\s*,\s*[\w=]+)*)})?\s*=\s*(.*)\s*$/
1976             => sub {
1977                 if (!@skip || $skip[$#skip] > 0) {
1978                     my @a = tokenize($1, qr|\s*,\s*|);
1979                     my @s = tokenize($expand_variables->($2));
1980                     push @scripts, @s;
1981                     foreach my $a (@a) {
1982                         my $ak = $a;
1983                         my $av = 1;
1984                         if ($a =~ m|^(.*?)\s*=\s*(.*?)$|) {
1985                             $ak = $1;
1986                             $av = $2;
1987                         }
1988                         foreach my $s (@s) {
1989                             $attributes{$s}->{$ak} = $av;
1990                         }
1991                     }
1992                 }
1993             },
1994
1995             qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
1996             => sub { push @{$ordinals{$1}}, tokenize($expand_variables->($2))
1997                          if !@skip || $skip[$#skip] > 0 },
1998             qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1999             => sub { push @{$sources{$1}}, tokenize($expand_variables->($2))
2000                          if !@skip || $skip[$#skip] > 0 },
2001             qr/^\s*SHARED_SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
2002             => sub { push @{$shared_sources{$1}},
2003                          tokenize($expand_variables->($2))
2004                          if !@skip || $skip[$#skip] > 0 },
2005             qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
2006             => sub { push @{$includes{$1}}, tokenize($expand_variables->($2))
2007                          if !@skip || $skip[$#skip] > 0 },
2008             qr/^\s*DEFINE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
2009             => sub { push @{$defines{$1}}, tokenize($expand_variables->($2))
2010                          if !@skip || $skip[$#skip] > 0 },
2011             qr/^\s*DEPEND\[((?:\\.|[^\\\]])*)\]\s*=\s*(.*)\s*$/
2012             => sub { push @{$depends{$1}}, tokenize($expand_variables->($2))
2013                          if !@skip || $skip[$#skip] > 0 },
2014             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
2015             => sub { push @{$generate{$1}}, $2
2016                          if !@skip || $skip[$#skip] > 0 },
2017             qr/^\s*(?:#.*)?$/ => sub { },
2018             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
2019             "BEFORE" => sub {
2020                 if ($buildinfo_debug) {
2021                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
2022                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
2023                 }
2024             },
2025             "AFTER" => sub {
2026                 if ($buildinfo_debug) {
2027                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
2028                 }
2029             },
2030             );
2031         die "runaway IF?" if (@skip);
2032
2033         if (grep { defined $attributes{$_}->{engine} } keys %attributes
2034                 and !$config{dynamic_engines}) {
2035             die <<"EOF"
2036 ENGINES can only be used if configured with 'dynamic-engine'.
2037 This is usually a fault in a build.info file.
2038 EOF
2039         }
2040
2041         foreach (keys %attributes) {
2042             my $dest = $_;
2043             my $ddest = cleanfile($buildd, $_, $blddir);
2044             foreach (keys %{$attributes{$dest} // {}}) {
2045                 $unified_info{attributes}->{$ddest}->{$_} =
2046                     $attributes{$dest}->{$_};
2047             }
2048         }
2049
2050         {
2051             my %infos = ( programs  => [ @programs  ],
2052                           libraries => [ @libraries ],
2053                           modules   => [ @modules   ],
2054                           scripts   => [ @scripts   ] );
2055             foreach my $k (keys %infos) {
2056                 foreach (@{$infos{$k}}) {
2057                     my $item = cleanfile($buildd, $_, $blddir);
2058                     $unified_info{$k}->{$item} = 1;
2059                 }
2060             }
2061         }
2062
2063         # Check that we haven't defined any library as both shared and
2064         # explicitly static.  That is forbidden.
2065         my @doubles = ();
2066         foreach (grep /\.a$/, keys %{$unified_info{libraries}}) {
2067             (my $l = $_) =~ s/\.a$//;
2068             push @doubles, $l if defined $unified_info{libraries}->{$l};
2069         }
2070         die "these libraries are both explicitly static and shared:\n  ",
2071             join(" ", @doubles), "\n"
2072             if @doubles;
2073
2074         foreach (keys %sources) {
2075             my $dest = $_;
2076             my $ddest = cleanfile($buildd, $_, $blddir);
2077             foreach (@{$sources{$dest}}) {
2078                 my $s = cleanfile($sourced, $_, $blddir);
2079
2080                 # If it isn't in the source tree, we assume it's generated
2081                 # in the build tree
2082                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
2083                     $s = cleanfile($buildd, $_, $blddir);
2084                 }
2085                 # We recognise C++, C and asm files
2086                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2087                     my $o = $_;
2088                     $o =~ s/\.[csS]$/.o/; # C and assembler
2089                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2090                     $o = cleanfile($buildd, $o, $blddir);
2091                     $unified_info{sources}->{$ddest}->{$o} = -1;
2092                     $unified_info{sources}->{$o}->{$s} = -1;
2093                 } elsif ($s =~ /\.rc$/) {
2094                     # We also recognise resource files
2095                     my $o = $_;
2096                     $o =~ s/\.rc$/.res/; # Resource configuration
2097                     my $o = cleanfile($buildd, $o, $blddir);
2098                     $unified_info{sources}->{$ddest}->{$o} = -1;
2099                     $unified_info{sources}->{$o}->{$s} = -1;
2100                 } else {
2101                     $unified_info{sources}->{$ddest}->{$s} = 1;
2102                 }
2103             }
2104         }
2105
2106         foreach (keys %shared_sources) {
2107             my $dest = $_;
2108             my $ddest = cleanfile($buildd, $_, $blddir);
2109             foreach (@{$shared_sources{$dest}}) {
2110                 my $s = cleanfile($sourced, $_, $blddir);
2111
2112                 # If it isn't in the source tree, we assume it's generated
2113                 # in the build tree
2114                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
2115                     $s = cleanfile($buildd, $_, $blddir);
2116                 }
2117
2118                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2119                     # We recognise C++, C and asm files
2120                     my $o = $_;
2121                     $o =~ s/\.[csS]$/.o/; # C and assembler
2122                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2123                     $o = cleanfile($buildd, $o, $blddir);
2124                     $unified_info{shared_sources}->{$ddest}->{$o} = -1;
2125                     $unified_info{sources}->{$o}->{$s} = -1;
2126                 } elsif ($s =~ /\.rc$/) {
2127                     # We also recognise resource files
2128                     my $o = $_;
2129                     $o =~ s/\.rc$/.res/; # Resource configuration
2130                     my $o = cleanfile($buildd, $o, $blddir);
2131                     $unified_info{shared_sources}->{$ddest}->{$o} = -1;
2132                     $unified_info{sources}->{$o}->{$s} = -1;
2133                 } elsif ($s =~ /\.ld$/) {
2134                     # We also recognise linker scripts (or corresponding)
2135                     # We know they are generated files
2136                     my $ld = cleanfile($buildd, $_, $blddir);
2137                     $unified_info{shared_sources}->{$ddest}->{$ld} = 1;
2138                 } else {
2139                     die "unrecognised source file type for shared library: $s\n";
2140                 }
2141             }
2142         }
2143
2144         foreach (keys %generate) {
2145             my $dest = $_;
2146             my $ddest = cleanfile($buildd, $_, $blddir);
2147             die "more than one generator for $dest: "
2148                     ,join(" ", @{$generate{$_}}),"\n"
2149                     if scalar @{$generate{$_}} > 1;
2150             my @generator = split /\s+/, $generate{$dest}->[0];
2151             $generator[0] = cleanfile($sourced, $generator[0], $blddir),
2152             $unified_info{generate}->{$ddest} = [ @generator ];
2153         }
2154
2155         foreach (keys %depends) {
2156             my $dest = $_;
2157             my $ddest = $dest eq "" ? "" : cleanfile($sourced, $_, $blddir);
2158
2159             # If the destination doesn't exist in source, it can only be
2160             # a generated file in the build tree.
2161             if ($ddest ne "" && ($ddest eq $src_configdata || ! -f $ddest)) {
2162                 $ddest = cleanfile($buildd, $_, $blddir);
2163             }
2164             foreach (@{$depends{$dest}}) {
2165                 my $d = cleanfile($sourced, $_, $blddir);
2166
2167                 # If we know it's generated, or assume it is because we can't
2168                 # find it in the source tree, we set file we depend on to be
2169                 # in the build tree rather than the source tree, and assume
2170                 # and that there are lines to build it in a BEGINRAW..ENDRAW
2171                 # section or in the Makefile template.
2172                 if ($d eq $src_configdata
2173                     || ! -f $d
2174                     || (grep { $d eq $_ }
2175                         map { cleanfile($srcdir, $_, $blddir) }
2176                         grep { /\.h$/ } keys %{$unified_info{generate}})) {
2177                     $d = cleanfile($buildd, $_, $blddir);
2178                 }
2179                 # Take note if the file to depend on is being renamed
2180                 # Take extra care with files ending with .a, they should
2181                 # be treated without that extension, and the extension
2182                 # should be added back after treatment.
2183                 $d =~ /(\.a)?$/;
2184                 my $e = $1 // "";
2185                 $d = $`.$e;
2186                 $unified_info{depends}->{$ddest}->{$d} = 1;
2187             }
2188         }
2189
2190         foreach (keys %includes) {
2191             my $dest = $_;
2192             my $ddest = cleanfile($sourced, $_, $blddir);
2193
2194             # If the destination doesn't exist in source, it can only be
2195             # a generated file in the build tree.
2196             if ($ddest eq $src_configdata || ! -f $ddest) {
2197                 $ddest = cleanfile($buildd, $_, $blddir);
2198             }
2199             foreach (@{$includes{$dest}}) {
2200                 my $is = cleandir($sourced, $_, $blddir);
2201                 my $ib = cleandir($buildd, $_, $blddir);
2202                 push @{$unified_info{includes}->{$ddest}->{source}}, $is
2203                     unless grep { $_ eq $is } @{$unified_info{includes}->{$ddest}->{source}};
2204                 push @{$unified_info{includes}->{$ddest}->{build}}, $ib
2205                     unless grep { $_ eq $ib } @{$unified_info{includes}->{$ddest}->{build}};
2206             }
2207         }
2208
2209         foreach (keys %defines) {
2210             my $dest = $_;
2211             my $ddest = cleanfile($sourced, $_, $blddir);
2212
2213             # If the destination doesn't exist in source, it can only be
2214             # a generated file in the build tree.
2215             if (! -f $ddest) {
2216                 $ddest = cleanfile($buildd, $_, $blddir);
2217                 if ($unified_info{rename}->{$ddest}) {
2218                     $ddest = $unified_info{rename}->{$ddest};
2219                 }
2220             }
2221             foreach (@{$defines{$dest}}) {
2222                 m|^([^=]*)(=.*)?$|;
2223                 die "0 length macro name not permitted\n" if $1 eq "";
2224                 die "$1 defined more than once\n"
2225                     if defined $unified_info{defines}->{$ddest}->{$1};
2226                 $unified_info{defines}->{$ddest}->{$1} = $2;
2227             }
2228         }
2229     }
2230
2231     my $ordinals_text = join(', ', sort keys %ordinals);
2232     warn <<"EOF" if $ordinals_text;
2233
2234 WARNING: ORDINALS were specified for $ordinals_text
2235 They are ignored and should be replaced with a combination of GENERATE,
2236 DEPEND and SHARED_SOURCE.
2237 EOF
2238
2239
2240     # Go through the sources of all libraries and check that the same basename
2241     # doesn't appear more than once.  Some static library archivers depend on
2242     # them being unique.
2243     {
2244         my $err = 0;
2245         foreach my $prod (keys %{$unified_info{libraries}}) {
2246             my @prod_sources =
2247                 map { keys %{$unified_info{sources}->{$_}} }
2248                 keys %{$unified_info{sources}->{$prod}};
2249             my %srccnt = ();
2250
2251             # Count how many times a given each source basename
2252             # appears for each product.
2253             foreach my $src (@prod_sources) {
2254                 $srccnt{basename $src}++;
2255             }
2256
2257             foreach my $src (keys %srccnt) {
2258                 if ((my $cnt = $srccnt{$src}) > 1) {
2259                     print STDERR "$src appears $cnt times for the product $prod\n";
2260                     $err++
2261                 }
2262             }
2263         }
2264         die if $err > 0;
2265     }
2266
2267     # Massage the result
2268
2269     # If we depend on a header file or a perl module, add an inclusion of
2270     # its directory to allow smoothe inclusion
2271     foreach my $dest (keys %{$unified_info{depends}}) {
2272         next if $dest eq "";
2273         foreach my $d (keys %{$unified_info{depends}->{$dest}}) {
2274             next unless $d =~ /\.(h|pm)$/;
2275             my $i = dirname($d);
2276             my $spot =
2277                 $d eq "configdata.pm" || defined($unified_info{generate}->{$d})
2278                 ? 'build' : 'source';
2279             push @{$unified_info{includes}->{$dest}->{$spot}}, $i
2280                 unless grep { $_ eq $i } @{$unified_info{includes}->{$dest}->{$spot}};
2281         }
2282     }
2283
2284     # Go through all intermediary files and change their names to something that
2285     # reflects what they will be built for.  Note that for some source files,
2286     # this leads to duplicate object files because they are used multiple times.
2287     # the goal is to rename all object files according to this scheme:
2288     #    {productname}-{midfix}-{origobjname}.[o|res]
2289     # the {midfix} is a keyword indicating the type of product, which is mostly
2290     # valuable for libraries since they come in two forms.
2291     #
2292     # This also reorganises the {sources} and {shared_sources} so that the
2293     # former only contains ALL object files that are supposed to end up in
2294     # static libraries and programs, while the latter contains ALL object files
2295     # that are supposed to end up in shared libraries and DSOs.
2296     # The main reason for having two different source structures is to allow
2297     # the same name to be used for the static and the shared variants of a
2298     # library.
2299     {
2300         # Take copies so we don't get interference from added stuff
2301         my %unified_copy = ();
2302         foreach (('sources', 'shared_sources')) {
2303             $unified_copy{$_} = { %{$unified_info{$_}} }
2304                 if defined($unified_info{$_});
2305             delete $unified_info{$_};
2306         }
2307         foreach my $prodtype (('programs', 'libraries', 'modules', 'scripts')) {
2308             # $intent serves multi purposes:
2309             # - give a prefix for the new object files names
2310             # - in the case of libraries, rearrange the object files so static
2311             #   libraries use the 'sources' structure exclusively, while shared
2312             #   libraries use the 'shared_sources' structure exclusively.
2313             my $intent = {
2314                 programs  => { bin    => { src => [ 'sources' ],
2315                                            dst => 'sources' } },
2316                 libraries => { lib    => { src => [ 'sources' ],
2317                                            dst => 'sources' },
2318                                shlib  => { prodselect =>
2319                                                sub { grep !/\.a$/, @_ },
2320                                            src => [ 'sources',
2321                                                     'shared_sources' ],
2322                                            dst => 'shared_sources' } },
2323                 modules   => { dso    => { src => [ 'sources' ],
2324                                            dst => 'sources' } },
2325                 scripts   => { script => { src => [ 'sources' ],
2326                                            dst => 'sources' } }
2327                } -> {$prodtype};
2328             foreach my $kind (keys %$intent) {
2329                 next if ($intent->{$kind}->{dst} eq 'shared_sources'
2330                              && $disabled{shared});
2331
2332                 my @src = @{$intent->{$kind}->{src}};
2333                 my $dst = $intent->{$kind}->{dst};
2334                 my $prodselect = $intent->{$kind}->{prodselect} // sub { @_ };
2335                 foreach my $prod ($prodselect->(keys %{$unified_info{$prodtype}})) {
2336                     # %prod_sources has all applicable objects as keys, and
2337                     # their corresponding sources as values
2338                     my %prod_sources =
2339                         map { $_ => [ keys %{$unified_copy{sources}->{$_}} ] }
2340                         map { keys %{$unified_copy{$_}->{$prod}} }
2341                         @src;
2342                     foreach (keys %prod_sources) {
2343                         # Only affect object files and resource files,
2344                         # the others simply get a new value
2345                         # (+1 instead of -1)
2346                         if ($_ =~ /\.(o|res)$/) {
2347                             (my $prodname = $prod) =~ s|\.a$||;
2348                             my $newobj =
2349                                 catfile(dirname($_),
2350                                         basename($prodname)
2351                                             . '-' . $kind
2352                                             . '-' . basename($_));
2353                             $unified_info{$dst}->{$prod}->{$newobj} = 1;
2354                             foreach my $src (@{$prod_sources{$_}}) {
2355                                 $unified_info{sources}->{$newobj}->{$src} = 1;
2356                             }
2357                             # Adjust dependencies
2358                             foreach my $deps (keys %{$unified_info{depends}->{$_}}) {
2359                                 $unified_info{depends}->{$_}->{$deps} = -1;
2360                                 $unified_info{depends}->{$newobj}->{$deps} = 1;
2361                             }
2362                             # Adjust includes
2363                             foreach my $k (('source', 'build')) {
2364                                 next unless
2365                                     defined($unified_info{includes}->{$_}->{$k});
2366                                 my @incs = @{$unified_info{includes}->{$_}->{$k}};
2367                                 $unified_info{includes}->{$newobj}->{$k} = [ @incs ];
2368                             }
2369                         } else {
2370                             $unified_info{$dst}->{$prod}->{$_} = 1;
2371                         }
2372                     }
2373                 }
2374             }
2375         }
2376     }
2377
2378     # At this point, we have a number of sources with the value -1.  They
2379     # aren't part of the local build and are probably meant for a different
2380     # platform, and can therefore be cleaned away.  That happens when making
2381     # %unified_info more efficient below.
2382
2383     ### Make unified_info a bit more efficient
2384     # One level structures
2385     foreach (("programs", "libraries", "modules", "scripts")) {
2386         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
2387     }
2388     # Two level structures
2389     foreach my $l1 (("sources", "shared_sources", "ldadd", "depends")) {
2390         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
2391             my @items =
2392                 sort
2393                 grep { $unified_info{$l1}->{$l2}->{$_} > 0 }
2394                 keys %{$unified_info{$l1}->{$l2}};
2395             if (@items) {
2396                 $unified_info{$l1}->{$l2} = [ @items ];
2397             } else {
2398                 delete $unified_info{$l1}->{$l2};
2399             }
2400         }
2401     }
2402     # Defines
2403     foreach my $dest (sort keys %{$unified_info{defines}}) {
2404         $unified_info{defines}->{$dest}
2405             = [ map { $_.$unified_info{defines}->{$dest}->{$_} }
2406                 sort keys %{$unified_info{defines}->{$dest}} ];
2407     }
2408     # Includes
2409     foreach my $dest (sort keys %{$unified_info{includes}}) {
2410         if (defined($unified_info{includes}->{$dest}->{build})) {
2411             my @source_includes = ();
2412             @source_includes = ( @{$unified_info{includes}->{$dest}->{source}} )
2413                 if defined($unified_info{includes}->{$dest}->{source});
2414             $unified_info{includes}->{$dest} =
2415                 [ @{$unified_info{includes}->{$dest}->{build}} ];
2416             foreach my $inc (@source_includes) {
2417                 push @{$unified_info{includes}->{$dest}}, $inc
2418                     unless grep { $_ eq $inc } @{$unified_info{includes}->{$dest}};
2419             }
2420         } elsif (defined($unified_info{includes}->{$dest}->{source})) {
2421             $unified_info{includes}->{$dest} =
2422                 [ @{$unified_info{includes}->{$dest}->{source}} ];
2423         } else {
2424             delete $unified_info{includes}->{$dest};
2425         }
2426     }
2427
2428     # For convenience collect information regarding directories where
2429     # files are generated, those generated files and the end product
2430     # they end up in where applicable.  Then, add build rules for those
2431     # directories
2432     my %loopinfo = ( "lib" => [ @{$unified_info{libraries}} ],
2433                      "dso" => [ @{$unified_info{modules}} ],
2434                      "bin" => [ @{$unified_info{programs}} ],
2435                      "script" => [ @{$unified_info{scripts}} ] );
2436     foreach my $type (keys %loopinfo) {
2437         foreach my $product (@{$loopinfo{$type}}) {
2438             my %dirs = ();
2439             my $pd = dirname($product);
2440
2441             foreach (@{$unified_info{sources}->{$product} // []},
2442                      @{$unified_info{shared_sources}->{$product} // []}) {
2443                 my $d = dirname($_);
2444
2445                 # We don't want to create targets for source directories
2446                 # when building out of source
2447                 next if ($config{sourcedir} ne $config{builddir}
2448                              && $d =~ m|^\Q$config{sourcedir}\E|);
2449                 # We already have a "test" target, and the current directory
2450                 # is just silly to make a target for
2451                 next if $d eq "test" || $d eq ".";
2452
2453                 $dirs{$d} = 1;
2454                 push @{$unified_info{dirinfo}->{$d}->{deps}}, $_
2455                     if $d ne $pd;
2456             }
2457             foreach (keys %dirs) {
2458                 push @{$unified_info{dirinfo}->{$_}->{products}->{$type}},
2459                     $product;
2460             }
2461         }
2462     }
2463 }
2464
2465 # For the schemes that need it, we provide the old *_obj configs
2466 # from the *_asm_obj ones
2467 foreach (grep /_(asm|aux)_src$/, keys %target) {
2468     my $src = $_;
2469     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
2470     $target{$obj} = $target{$src};
2471     $target{$obj} =~ s/\.[csS]\b/.o/g; # C and assembler
2472     $target{$obj} =~ s/\.(cc|cpp)\b/_cc.o/g; # C++
2473 }
2474
2475 # Write down our configuration where it fits #########################
2476
2477 print "Creating configdata.pm\n";
2478 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
2479 print OUT <<"EOF";
2480 #! $config{HASHBANGPERL}
2481
2482 package configdata;
2483
2484 use strict;
2485 use warnings;
2486
2487 use Exporter;
2488 #use vars qw(\@ISA \@EXPORT);
2489 our \@ISA = qw(Exporter);
2490 our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables \@disablables_int);
2491
2492 EOF
2493 print OUT "our %config = (\n";
2494 foreach (sort keys %config) {
2495     if (ref($config{$_}) eq "ARRAY") {
2496         print OUT "  ", $_, " => [ ", join(", ",
2497                                            map { quotify("perl", $_) }
2498                                            @{$config{$_}}), " ],\n";
2499     } elsif (ref($config{$_}) eq "HASH") {
2500         print OUT "  ", $_, " => {";
2501         if (scalar keys %{$config{$_}} > 0) {
2502             print OUT "\n";
2503             foreach my $key (sort keys %{$config{$_}}) {
2504                 print OUT "      ",
2505                     join(" => ",
2506                          quotify("perl", $key),
2507                          defined $config{$_}->{$key}
2508                              ? quotify("perl", $config{$_}->{$key})
2509                              : "undef");
2510                 print OUT ",\n";
2511             }
2512             print OUT "  ";
2513         }
2514         print OUT "},\n";
2515     } else {
2516         print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
2517     }
2518 }
2519 print OUT <<"EOF";
2520 );
2521
2522 EOF
2523 print OUT "our %target = (\n";
2524 foreach (sort keys %target) {
2525     if (ref($target{$_}) eq "ARRAY") {
2526         print OUT "  ", $_, " => [ ", join(", ",
2527                                            map { quotify("perl", $_) }
2528                                            @{$target{$_}}), " ],\n";
2529     } else {
2530         print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
2531     }
2532 }
2533 print OUT <<"EOF";
2534 );
2535
2536 EOF
2537 print OUT "our \%available_protocols = (\n";
2538 print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
2539 print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
2540 print OUT <<"EOF";
2541 );
2542
2543 EOF
2544 print OUT "our \@disablables = (\n";
2545 foreach (@disablables) {
2546     print OUT "  ", quotify("perl", $_), ",\n";
2547 }
2548 print OUT <<"EOF";
2549 );
2550
2551 EOF
2552 print OUT "# The following come from Configure's @disablables_int\n";
2553 print OUT "our \@disablables_int = (\n";
2554 foreach (@disablables_int) {
2555     print OUT "  ", quotify("perl", $_), ",\n";
2556 }
2557 print OUT <<"EOF";
2558 );
2559
2560 EOF
2561 print OUT "our \%disabled = (\n";
2562 foreach (sort keys %disabled) {
2563     print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
2564 }
2565 print OUT <<"EOF";
2566 );
2567
2568 EOF
2569 print OUT "our %withargs = (\n";
2570 foreach (sort keys %withargs) {
2571     if (ref($withargs{$_}) eq "ARRAY") {
2572         print OUT "  ", $_, " => [ ", join(", ",
2573                                            map { quotify("perl", $_) }
2574                                            @{$withargs{$_}}), " ],\n";
2575     } else {
2576         print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
2577     }
2578 }
2579 print OUT <<"EOF";
2580 );
2581
2582 EOF
2583 if ($builder eq "unified") {
2584     my $recurse;
2585     $recurse = sub {
2586         my $indent = shift;
2587         foreach (@_) {
2588             if (ref $_ eq "ARRAY") {
2589                 print OUT " "x$indent, "[\n";
2590                 foreach (@$_) {
2591                     $recurse->($indent + 4, $_);
2592                 }
2593                 print OUT " "x$indent, "],\n";
2594             } elsif (ref $_ eq "HASH") {
2595                 my %h = %$_;
2596                 print OUT " "x$indent, "{\n";
2597                 foreach (sort keys %h) {
2598                     if (ref $h{$_} eq "") {
2599                         print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
2600                     } else {
2601                         print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
2602                         $recurse->($indent + 8, $h{$_});
2603                     }
2604                 }
2605                 print OUT " "x$indent, "},\n";
2606             } else {
2607                 print OUT " "x$indent, quotify("perl", $_), ",\n";
2608             }
2609         }
2610     };
2611     print OUT "our %unified_info = (\n";
2612     foreach (sort keys %unified_info) {
2613         if (ref $unified_info{$_} eq "") {
2614             print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
2615         } else {
2616             print OUT " "x4, quotify("perl", $_), " =>\n";
2617             $recurse->(8, $unified_info{$_});
2618         }
2619     }
2620     print OUT <<"EOF";
2621 );
2622
2623 EOF
2624 }
2625 print OUT
2626     "# The following data is only used when this files is use as a script\n";
2627 print OUT "my \@makevars = (\n";
2628 foreach (sort keys %user) {
2629     print OUT "    '",$_,"',\n";
2630 }
2631 print OUT ");\n";
2632 print OUT "my \%disabled_info = (\n";
2633 foreach my $what (sort keys %disabled_info) {
2634     print OUT "    '$what' => {\n";
2635     foreach my $info (sort keys %{$disabled_info{$what}}) {
2636         if (ref $disabled_info{$what}->{$info} eq 'ARRAY') {
2637             print OUT "        $info => [ ",
2638                 join(', ', map { "'$_'" } @{$disabled_info{$what}->{$info}}),
2639                 " ],\n";
2640         } else {
2641             print OUT "        $info => '", $disabled_info{$what}->{$info},
2642                 "',\n";
2643         }
2644     }
2645     print OUT "    },\n";
2646 }
2647 print OUT ");\n";
2648 print OUT 'my @user_crossable = qw( ', join (' ', @user_crossable), " );\n";
2649 print OUT << 'EOF';
2650 # If run directly, we can give some answers, and even reconfigure
2651 unless (caller) {
2652     use Getopt::Long;
2653     use File::Spec::Functions;
2654     use File::Basename;
2655     use Pod::Usage;
2656
2657     my $here = dirname($0);
2658
2659     my $dump = undef;
2660     my $cmdline = undef;
2661     my $options = undef;
2662     my $target = undef;
2663     my $envvars = undef;
2664     my $makevars = undef;
2665     my $buildparams = undef;
2666     my $reconf = undef;
2667     my $verbose = undef;
2668     my $help = undef;
2669     my $man = undef;
2670     GetOptions('dump|d'                 => \$dump,
2671                'command-line|c'         => \$cmdline,
2672                'options|o'              => \$options,
2673                'target|t'               => \$target,
2674                'environment|e'          => \$envvars,
2675                'make-variables|m'       => \$makevars,
2676                'build-parameters|b'     => \$buildparams,
2677                'reconfigure|reconf|r'   => \$reconf,
2678                'verbose|v'              => \$verbose,
2679                'help'                   => \$help,
2680                'man'                    => \$man)
2681         or die "Errors in command line arguments\n";
2682
2683     unless ($dump || $cmdline || $options || $target || $envvars || $makevars
2684             || $buildparams || $reconf || $verbose || $help || $man) {
2685         print STDERR <<"_____";
2686 You must give at least one option.
2687 For more information, do '$0 --help'
2688 _____
2689         exit(2);
2690     }
2691
2692     if ($help) {
2693         pod2usage(-exitval => 0,
2694                   -verbose => 1);
2695     }
2696     if ($man) {
2697         pod2usage(-exitval => 0,
2698                   -verbose => 2);
2699     }
2700     if ($dump || $cmdline) {
2701         print "\nCommand line (with current working directory = $here):\n\n";
2702         print '    ',join(' ',
2703                           $config{PERL},
2704                           catfile($config{sourcedir}, 'Configure'),
2705                           @{$config{perlargv}}), "\n";
2706         print "\nPerl information:\n\n";
2707         print '    ',$config{perl_cmd},"\n";
2708         print '    ',$config{perl_version},' for ',$config{perl_archname},"\n";
2709     }
2710     if ($dump || $options) {
2711         my $longest = 0;
2712         my $longest2 = 0;
2713         foreach my $what (@disablables) {
2714             $longest = length($what) if $longest < length($what);
2715             $longest2 = length($disabled{$what})
2716                 if $disabled{$what} && $longest2 < length($disabled{$what});
2717         }
2718         print "\nEnabled features:\n\n";
2719         foreach my $what (@disablables) {
2720             print "    $what\n" unless $disabled{$what};
2721         }
2722         print "\nDisabled features:\n\n";
2723         foreach my $what (@disablables) {
2724             if ($disabled{$what}) {
2725                 print "    $what", ' ' x ($longest - length($what) + 1),
2726                     "[$disabled{$what}]", ' ' x ($longest2 - length($disabled{$what}) + 1);
2727                 print $disabled_info{$what}->{macro}
2728                     if $disabled_info{$what}->{macro};
2729                 print ' (skip ',
2730                     join(', ', @{$disabled_info{$what}->{skipped}}),
2731                     ')'
2732                     if $disabled_info{$what}->{skipped};
2733                 print "\n";
2734             }
2735         }
2736     }
2737     if ($dump || $target) {
2738         print "\nConfig target attributes:\n\n";
2739         foreach (sort keys %target) {
2740             next if $_ =~ m|^_| || $_ eq 'template';
2741             my $quotify = sub {
2742                 map { (my $x = $_) =~ s|([\\\$\@"])|\\$1|g; "\"$x\""} @_;
2743             };
2744             print '    ', $_, ' => ';
2745             if (ref($target{$_}) eq "ARRAY") {
2746                 print '[ ', join(', ', $quotify->(@{$target{$_}})), " ],\n";
2747             } else {
2748                 print $quotify->($target{$_}), ",\n"
2749             }
2750         }
2751     }
2752     if ($dump || $envvars) {
2753         print "\nRecorded environment:\n\n";
2754         foreach (sort keys %{$config{perlenv}}) {
2755             print '    ',$_,' = ',($config{perlenv}->{$_} || ''),"\n";
2756         }
2757     }
2758     if ($dump || $makevars) {
2759         print "\nMakevars:\n\n";
2760         foreach my $var (@makevars) {
2761             my $prefix = '';
2762             $prefix = $config{CROSS_COMPILE}
2763                 if grep { $var eq $_ } @user_crossable;
2764             $prefix //= '';
2765             print '    ',$var,' ' x (16 - length $var),'= ',
2766                 (ref $config{$var} eq 'ARRAY'
2767                  ? join(' ', @{$config{$var}})
2768                  : $prefix.$config{$var}),
2769                 "\n"
2770                 if defined $config{$var};
2771         }
2772
2773         my @buildfile = ($config{builddir}, $config{build_file});
2774         unshift @buildfile, $here
2775             unless file_name_is_absolute($config{builddir});
2776         my $buildfile = canonpath(catdir(@buildfile));
2777         print <<"_____";
2778
2779 NOTE: These variables only represent the configuration view.  The build file
2780 template may have processed these variables further, please have a look at the
2781 build file for more exact data:
2782     $buildfile
2783 _____
2784     }
2785     if ($dump || $buildparams) {
2786         my @buildfile = ($config{builddir}, $config{build_file});
2787         unshift @buildfile, $here
2788             unless file_name_is_absolute($config{builddir});
2789         print "\nbuild file:\n\n";
2790         print "    ", canonpath(catfile(@buildfile)),"\n";
2791
2792         print "\nbuild file templates:\n\n";
2793         foreach (@{$config{build_file_templates}}) {
2794             my @tmpl = ($_);
2795             unshift @tmpl, $here
2796                 unless file_name_is_absolute($config{sourcedir});
2797             print '    ',canonpath(catfile(@tmpl)),"\n";
2798         }
2799     }
2800     if ($reconf) {
2801         if ($verbose) {
2802             print 'Reconfiguring with: ', join(' ',@{$config{perlargv}}), "\n";
2803             foreach (sort keys %{$config{perlenv}}) {
2804                 print '    ',$_,' = ',($config{perlenv}->{$_} || ""),"\n";
2805             }
2806         }
2807
2808         chdir $here;
2809         exec $^X,catfile($config{sourcedir}, 'Configure'),'reconf';
2810     }
2811 }
2812
2813 1;
2814
2815 __END__
2816
2817 =head1 NAME
2818
2819 configdata.pm - configuration data for OpenSSL builds
2820
2821 =head1 SYNOPSIS
2822
2823 Interactive:
2824
2825   perl configdata.pm [options]
2826
2827 As data bank module:
2828
2829   use configdata;
2830
2831 =head1 DESCRIPTION
2832
2833 This module can be used in two modes, interactively and as a module containing
2834 all the data recorded by OpenSSL's Configure script.
2835
2836 When used interactively, simply run it as any perl script, with at least one
2837 option, and you will get the information you ask for.  See L</OPTIONS> below.
2838
2839 When loaded as a module, you get a few databanks with useful information to
2840 perform build related tasks.  The databanks are:
2841
2842     %config             Configured things.
2843     %target             The OpenSSL config target with all inheritances
2844                         resolved.
2845     %disabled           The features that are disabled.
2846     @disablables        The list of features that can be disabled.
2847     %withargs           All data given through --with-THING options.
2848     %unified_info       All information that was computed from the build.info
2849                         files.
2850
2851 =head1 OPTIONS
2852
2853 =over 4
2854
2855 =item B<--help>
2856
2857 Print a brief help message and exit.
2858
2859 =item B<--man>
2860
2861 Print the manual page and exit.
2862
2863 =item B<--dump> | B<-d>
2864
2865 Print all relevant configuration data.  This is equivalent to B<--command-line>
2866 B<--options> B<--target> B<--environment> B<--make-variables>
2867 B<--build-parameters>.
2868
2869 =item B<--command-line> | B<-c>
2870
2871 Print the current configuration command line.
2872
2873 =item B<--options> | B<-o>
2874
2875 Print the features, both enabled and disabled, and display defined macro and
2876 skipped directories where applicable.
2877
2878 =item B<--target> | B<-t>
2879
2880 Print the config attributes for this config target.
2881
2882 =item B<--environment> | B<-e>
2883
2884 Print the environment variables and their values at the time of configuration.
2885
2886 =item B<--make-variables> | B<-m>
2887
2888 Print the main make variables generated in the current configuration
2889
2890 =item B<--build-parameters> | B<-b>
2891
2892 Print the build parameters, i.e. build file and build file templates.
2893
2894 =item B<--reconfigure> | B<--reconf> | B<-r>
2895
2896 Redo the configuration.
2897
2898 =item B<--verbose> | B<-v>
2899
2900 Verbose output.
2901
2902 =back
2903
2904 =cut
2905
2906 EOF
2907 close(OUT);
2908 if ($builder_platform eq 'unix') {
2909     my $mode = (0755 & ~umask);
2910     chmod $mode, 'configdata.pm'
2911         or warn sprintf("WARNING: Couldn't change mode for 'configdata.pm' to 0%03o: %s\n",$mode,$!);
2912 }
2913
2914 my %builders = (
2915     unified => sub {
2916         print 'Creating ',$target{build_file},"\n";
2917         run_dofile(catfile($blddir, $target{build_file}),
2918                    @{$config{build_file_templates}});
2919     },
2920     );
2921
2922 $builders{$builder}->($builder_platform, @builder_opts);
2923
2924 $SIG{__DIE__} = $orig_death_handler;
2925
2926 print <<"EOF" if ($disabled{threads} eq "unavailable");
2927
2928 The library could not be configured for supporting multi-threaded
2929 applications as the compiler options required on this system are not known.
2930 See file INSTALL for details if you need multi-threading.
2931 EOF
2932
2933 print <<"EOF" if ($no_shared_warn);
2934
2935 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
2936 platform, so we will pretend you gave the option 'no-pic', which also disables
2937 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
2938 or position independent code, please let us know (but please first make sure
2939 you have tried with a current version of OpenSSL).
2940 EOF
2941
2942 print <<"EOF";
2943
2944 **********************************************************************
2945 ***                                                                ***
2946 ***   OpenSSL has been successfully configured                     ***
2947 ***                                                                ***
2948 ***   If you encounter a problem while building, please open an    ***
2949 ***   issue on GitHub <https://github.com/openssl/openssl/issues>  ***
2950 ***   and include the output from the following command:           ***
2951 ***                                                                ***
2952 ***       perl configdata.pm --dump                                ***
2953 ***                                                                ***
2954 ***   (If you are new to OpenSSL, you might want to consult the    ***
2955 ***   'Troubleshooting' section in the INSTALL file first)         ***
2956 ***                                                                ***
2957 **********************************************************************
2958 EOF
2959
2960 exit(0);
2961
2962 ######################################################################
2963 #
2964 # Helpers and utility functions
2965 #
2966
2967 # Death handler, to print a helpful message in case of failure #######
2968 #
2969 sub death_handler {
2970     die @_ if $^S;              # To prevent the added message in eval blocks
2971     my $build_file = $target{build_file} // "build file";
2972     my @message = ( <<"_____", @_ );
2973
2974 Failure!  $build_file wasn't produced.
2975 Please read INSTALL and associated NOTES files.  You may also have to look over
2976 your available compiler tool chain or change your configuration.
2977
2978 _____
2979
2980     # Dying is terminal, so it's ok to reset the signal handler here.
2981     $SIG{__DIE__} = $orig_death_handler;
2982     die @message;
2983 }
2984
2985 # Configuration file reading #########################################
2986
2987 # Note: All of the helper functions are for lazy evaluation.  They all
2988 # return a CODE ref, which will return the intended value when evaluated.
2989 # Thus, whenever there's mention of a returned value, it's about that
2990 # intended value.
2991
2992 # Helper function to implement conditional inheritance depending on the
2993 # value of $disabled{asm}.  Used in inherit_from values as follows:
2994 #
2995 #      inherit_from => [ "template", asm("asm_tmpl") ]
2996 #
2997 sub asm {
2998     my @x = @_;
2999     sub {
3000         $disabled{asm} ? () : @x;
3001     }
3002 }
3003
3004 # Helper function to implement conditional value variants, with a default
3005 # plus additional values based on the value of $config{build_type}.
3006 # Arguments are given in hash table form:
3007 #
3008 #       picker(default => "Basic string: ",
3009 #              debug   => "debug",
3010 #              release => "release")
3011 #
3012 # When configuring with --debug, the resulting string will be
3013 # "Basic string: debug", and when not, it will be "Basic string: release"
3014 #
3015 # This can be used to create variants of sets of flags according to the
3016 # build type:
3017 #
3018 #       cflags => picker(default => "-Wall",
3019 #                        debug   => "-g -O0",
3020 #                        release => "-O3")
3021 #
3022 sub picker {
3023     my %opts = @_;
3024     return sub { add($opts{default} || (),
3025                      $opts{$config{build_type}} || ())->(); }
3026 }
3027
3028 # Helper function to combine several values of different types into one.
3029 # This is useful if you want to combine a string with the result of a
3030 # lazy function, such as:
3031 #
3032 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
3033 #
3034 sub combine {
3035     my @stuff = @_;
3036     return sub { add(@stuff)->(); }
3037 }
3038
3039 # Helper function to implement conditional values depending on the value
3040 # of $disabled{threads}.  Can be used as follows:
3041 #
3042 #       cflags => combine("-Wall", threads("-pthread"))
3043 #
3044 sub threads {
3045     my @flags = @_;
3046     return sub { add($disabled{threads} ? () : @flags)->(); }
3047 }
3048
3049 sub shared {
3050     my @flags = @_;
3051     return sub { add($disabled{shared} ? () : @flags)->(); }
3052 }
3053
3054 our $add_called = 0;
3055 # Helper function to implement adding values to already existing configuration
3056 # values.  It handles elements that are ARRAYs, CODEs and scalars
3057 sub _add {
3058     my $separator = shift;
3059
3060     # If there's any ARRAY in the collection of values OR the separator
3061     # is undef, we will return an ARRAY of combined values, otherwise a
3062     # string of joined values with $separator as the separator.
3063     my $found_array = !defined($separator);
3064
3065     my @values =
3066         map {
3067             my $res = $_;
3068             while (ref($res) eq "CODE") {
3069                 $res = $res->();
3070             }
3071             if (defined($res)) {
3072                 if (ref($res) eq "ARRAY") {
3073                     $found_array = 1;
3074                     @$res;
3075                 } else {
3076                     $res;
3077                 }
3078             } else {
3079                 ();
3080             }
3081     } (@_);
3082
3083     $add_called = 1;
3084
3085     if ($found_array) {
3086         [ @values ];
3087     } else {
3088         join($separator, grep { defined($_) && $_ ne "" } @values);
3089     }
3090 }
3091 sub add_before {
3092     my $separator = " ";
3093     if (ref($_[$#_]) eq "HASH") {
3094         my $opts = pop;
3095         $separator = $opts->{separator};
3096     }
3097     my @x = @_;
3098     sub { _add($separator, @x, @_) };
3099 }
3100 sub add {
3101     my $separator = " ";
3102     if (ref($_[$#_]) eq "HASH") {
3103         my $opts = pop;
3104         $separator = $opts->{separator};
3105     }
3106     my @x = @_;
3107     sub { _add($separator, @_, @x) };
3108 }
3109
3110 sub read_eval_file {
3111     my $fname = shift;
3112     my $content;
3113     my @result;
3114
3115     open F, "< $fname" or die "Can't open '$fname': $!\n";
3116     {
3117         undef local $/;
3118         $content = <F>;
3119     }
3120     close F;
3121     {
3122         local $@;
3123
3124         @result = ( eval $content );
3125         warn $@ if $@;
3126     }
3127     return wantarray ? @result : $result[0];
3128 }
3129
3130 # configuration reader, evaluates the input file as a perl script and expects
3131 # it to fill %targets with target configurations.  Those are then added to
3132 # %table.
3133 sub read_config {
3134     my $fname = shift;
3135     my %targets;
3136
3137     {
3138         # Protect certain tables from tampering
3139         local %table = ();
3140
3141         %targets = read_eval_file($fname);
3142     }
3143     my %preexisting = ();
3144     foreach (sort keys %targets) {
3145         $preexisting{$_} = 1 if $table{$_};
3146     }
3147     die <<"EOF",
3148 The following config targets from $fname
3149 shadow pre-existing config targets with the same name:
3150 EOF
3151         map { "  $_\n" } sort keys %preexisting
3152         if %preexisting;
3153
3154
3155     # For each target, check that it's configured with a hash table.
3156     foreach (keys %targets) {
3157         if (ref($targets{$_}) ne "HASH") {
3158             if (ref($targets{$_}) eq "") {
3159                 warn "Deprecated target configuration for $_, ignoring...\n";
3160             } else {
3161                 warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
3162             }
3163             delete $targets{$_};
3164         } else {
3165             $targets{$_}->{_conf_fname_int} = add([ $fname ]);
3166         }
3167     }
3168
3169     %table = (%table, %targets);
3170
3171 }
3172
3173 # configuration resolver.  Will only resolve all the lazy evaluation
3174 # codeblocks for the chosen target and all those it inherits from,
3175 # recursively
3176 sub resolve_config {
3177     my $target = shift;
3178     my @breadcrumbs = @_;
3179
3180 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
3181
3182     if (grep { $_ eq $target } @breadcrumbs) {
3183         die "inherit_from loop!  target backtrace:\n  "
3184             ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
3185     }
3186
3187     if (!defined($table{$target})) {
3188         warn "Warning! target $target doesn't exist!\n";
3189         return ();
3190     }
3191     # Recurse through all inheritances.  They will be resolved on the
3192     # fly, so when this operation is done, they will all just be a
3193     # bunch of attributes with string values.
3194     # What we get here, though, are keys with references to lists of
3195     # the combined values of them all.  We will deal with lists after
3196     # this stage is done.
3197     my %combined_inheritance = ();
3198     if ($table{$target}->{inherit_from}) {
3199         my @inherit_from =
3200             map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
3201         foreach (@inherit_from) {
3202             my %inherited_config = resolve_config($_, $target, @breadcrumbs);
3203
3204             # 'template' is a marker that's considered private to
3205             # the config that had it.
3206             delete $inherited_config{template};
3207
3208             foreach (keys %inherited_config) {
3209                 if (!$combined_inheritance{$_}) {
3210                     $combined_inheritance{$_} = [];
3211                 }
3212                 push @{$combined_inheritance{$_}}, $inherited_config{$_};
3213             }
3214         }
3215     }
3216
3217     # We won't need inherit_from in this target any more, since we've
3218     # resolved all the inheritances that lead to this
3219     delete $table{$target}->{inherit_from};
3220
3221     # Now is the time to deal with those lists.  Here's the place to
3222     # decide what shall be done with those lists, all based on the
3223     # values of the target we're currently dealing with.
3224     # - If a value is a coderef, it will be executed with the list of
3225     #   inherited values as arguments.
3226     # - If the corresponding key doesn't have a value at all or is the
3227     #   empty string, the inherited value list will be run through the
3228     #   default combiner (below), and the result becomes this target's
3229     #   value.
3230     # - Otherwise, this target's value is assumed to be a string that
3231     #   will simply override the inherited list of values.
3232     my $default_combiner = add();
3233
3234     my %all_keys =
3235         map { $_ => 1 } (keys %combined_inheritance,
3236                          keys %{$table{$target}});
3237
3238     sub process_values {
3239         my $object    = shift;
3240         my $inherited = shift;  # Always a [ list ]
3241         my $target    = shift;
3242         my $entry     = shift;
3243
3244         $add_called = 0;
3245
3246         while(ref($object) eq "CODE") {
3247             $object = $object->(@$inherited);
3248         }
3249         if (!defined($object)) {
3250             return ();
3251         }
3252         elsif (ref($object) eq "ARRAY") {
3253             local $add_called;  # To make sure recursive calls don't affect it
3254             return [ map { process_values($_, $inherited, $target, $entry) }
3255                      @$object ];
3256         } elsif (ref($object) eq "") {
3257             return $object;
3258         } else {
3259             die "cannot handle reference type ",ref($object)
3260                 ," found in target ",$target," -> ",$entry,"\n";
3261         }
3262     }
3263
3264     foreach (sort keys %all_keys) {
3265         my $previous = $combined_inheritance{$_};
3266
3267         # Current target doesn't have a value for the current key?
3268         # Assign it the default combiner, the rest of this loop body
3269         # will handle it just like any other coderef.
3270         if (!exists $table{$target}->{$_}) {
3271             $table{$target}->{$_} = $default_combiner;
3272         }
3273
3274         $table{$target}->{$_} = process_values($table{$target}->{$_},
3275                                                $combined_inheritance{$_},
3276                                                $target, $_);
3277         unless(defined($table{$target}->{$_})) {
3278             delete $table{$target}->{$_};
3279         }
3280 #        if ($extra_checks &&
3281 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
3282 #            warn "$_ got replaced in $target\n";
3283 #        }
3284     }
3285
3286     # Finally done, return the result.
3287     return %{$table{$target}};
3288 }
3289
3290 sub usage
3291         {
3292         print STDERR $usage;
3293         print STDERR "\npick os/compiler from:\n";
3294         my $j=0;
3295         my $i;
3296         my $k=0;
3297         foreach $i (sort keys %table)
3298                 {
3299                 next if $table{$i}->{template};
3300                 next if $i =~ /^debug/;
3301                 $k += length($i) + 1;
3302                 if ($k > 78)
3303                         {
3304                         print STDERR "\n";
3305                         $k=length($i);
3306                         }
3307                 print STDERR $i . " ";
3308                 }
3309         foreach $i (sort keys %table)
3310                 {
3311                 next if $table{$i}->{template};
3312                 next if $i !~ /^debug/;
3313                 $k += length($i) + 1;
3314                 if ($k > 78)
3315                         {
3316                         print STDERR "\n";
3317                         $k=length($i);
3318                         }
3319                 print STDERR $i . " ";
3320                 }
3321         print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
3322         exit(1);
3323         }
3324
3325 sub run_dofile
3326 {
3327     my $out = shift;
3328     my @templates = @_;
3329
3330     unlink $out || warn "Can't remove $out, $!"
3331         if -f $out;
3332     foreach (@templates) {
3333         die "Can't open $_, $!" unless -f $_;
3334     }
3335     my $perlcmd = (quotify("maybeshell", $config{PERL}))[0];
3336     my $cmd = "$perlcmd \"-I.\" \"-Mconfigdata\" \"$dofile\" -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
3337     #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
3338     system($cmd);
3339     exit 1 if $? != 0;
3340     rename("$out.new", $out) || die "Can't rename $out.new, $!";
3341 }
3342
3343 sub compiler_predefined {
3344     state %predefined;
3345     my $cc = shift;
3346
3347     return () if $^O eq 'VMS';
3348
3349     die 'compiler_predefined called without a compiler command'
3350         unless $cc;
3351
3352     if (! $predefined{$cc}) {
3353
3354         $predefined{$cc} = {};
3355
3356         # collect compiler pre-defines from gcc or gcc-alike...
3357         open(PIPE, "$cc -dM -E -x c /dev/null 2>&1 |");
3358         while (my $l = <PIPE>) {
3359             $l =~ m/^#define\s+(\w+(?:\(\w+\))?)(?:\s+(.+))?/ or last;
3360             $predefined{$cc}->{$1} = $2 // '';
3361         }
3362         close(PIPE);
3363     }
3364
3365     return %{$predefined{$cc}};
3366 }
3367
3368 sub which
3369 {
3370     my ($name)=@_;
3371
3372     if (eval { require IPC::Cmd; 1; }) {
3373         IPC::Cmd->import();
3374         return scalar IPC::Cmd::can_run($name);
3375     } else {
3376         # if there is $directories component in splitpath,
3377         # then it's not something to test with $PATH...
3378         return $name if (File::Spec->splitpath($name))[1];
3379
3380         foreach (File::Spec->path()) {
3381             my $fullpath = catfile($_, "$name$target{exe_extension}");
3382             if (-f $fullpath and -x $fullpath) {
3383                 return $fullpath;
3384             }
3385         }
3386     }
3387 }
3388
3389 sub env
3390 {
3391     my $name = shift;
3392     my %opts = @_;
3393
3394     unless ($opts{cacheonly}) {
3395         # Note that if $ENV{$name} doesn't exist or is undefined,
3396         # $config{perlenv}->{$name} will be created with the value
3397         # undef.  This is intentional.
3398
3399         $config{perlenv}->{$name} = $ENV{$name}
3400             if ! exists $config{perlenv}->{$name};
3401     }
3402     return $config{perlenv}->{$name};
3403 }
3404
3405 # Configuration printer ##############################################
3406
3407 sub print_table_entry
3408 {
3409     local $now_printing = shift;
3410     my %target = resolve_config($now_printing);
3411     my $type = shift;
3412
3413     # Don't print the templates
3414     return if $target{template};
3415
3416     my @sequence = (
3417         "sys_id",
3418         "cpp",
3419         "cppflags",
3420         "defines",
3421         "includes",
3422         "cc",
3423         "cflags",
3424         "unistd",
3425         "ld",
3426         "lflags",
3427         "loutflag",
3428         "ex_libs",
3429         "bn_ops",
3430         "apps_aux_src",
3431         "cpuid_asm_src",
3432         "uplink_aux_src",
3433         "bn_asm_src",
3434         "ec_asm_src",
3435         "des_asm_src",
3436         "aes_asm_src",
3437         "bf_asm_src",
3438         "md5_asm_src",
3439         "cast_asm_src",
3440         "sha1_asm_src",
3441         "rc4_asm_src",
3442         "rmd160_asm_src",
3443         "rc5_asm_src",
3444         "wp_asm_src",
3445         "cmll_asm_src",
3446         "modes_asm_src",
3447         "padlock_asm_src",
3448         "chacha_asm_src",
3449         "poly1035_asm_src",
3450         "thread_scheme",
3451         "perlasm_scheme",
3452         "dso_scheme",
3453         "shared_target",
3454         "shared_cflag",
3455         "shared_defines",
3456         "shared_ldflag",
3457         "shared_rcflag",
3458         "shared_extension",
3459         "dso_extension",
3460         "obj_extension",
3461         "exe_extension",
3462         "ranlib",
3463         "ar",
3464         "arflags",
3465         "aroutflag",
3466         "rc",
3467         "rcflags",
3468         "rcoutflag",
3469         "mt",
3470         "mtflags",
3471         "mtinflag",
3472         "mtoutflag",
3473         "multilib",
3474         "build_scheme",
3475         );
3476
3477     if ($type eq "TABLE") {
3478         print "\n";
3479         print "*** $now_printing\n";
3480         foreach (@sequence) {
3481             if (ref($target{$_}) eq "ARRAY") {
3482                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
3483             } else {
3484                 printf "\$%-12s = %s\n", $_, $target{$_};
3485             }
3486         }
3487     } elsif ($type eq "HASH") {
3488         my $largest =
3489             length((sort { length($a) <=> length($b) } @sequence)[-1]);
3490         print "    '$now_printing' => {\n";
3491         foreach (@sequence) {
3492             if ($target{$_}) {
3493                 if (ref($target{$_}) eq "ARRAY") {
3494                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
3495                 } else {
3496                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
3497                 }
3498             }
3499         }
3500         print "    },\n";
3501     }
3502 }
3503
3504 # Utility routines ###################################################
3505
3506 # On VMS, if the given file is a logical name, File::Spec::Functions
3507 # will consider it an absolute path.  There are cases when we want a
3508 # purely syntactic check without checking the environment.
3509 sub isabsolute {
3510     my $file = shift;
3511
3512     # On non-platforms, we just use file_name_is_absolute().
3513     return file_name_is_absolute($file) unless $^O eq "VMS";
3514
3515     # If the file spec includes a device or a directory spec,
3516     # file_name_is_absolute() is perfectly safe.
3517     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
3518
3519     # Here, we know the given file spec isn't absolute
3520     return 0;
3521 }
3522
3523 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
3524 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
3525 # realpath() requires that at least all path components except the last is an
3526 # existing directory.  On VMS, the last component of the directory spec must
3527 # exist.
3528 sub absolutedir {
3529     my $dir = shift;
3530
3531     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
3532     # will return the volume name for the device, no matter what.  Also,
3533     # it will return an incorrect directory spec if the argument is a
3534     # directory that doesn't exist.
3535     if ($^O eq "VMS") {
3536         return rel2abs($dir);
3537     }
3538
3539     # We use realpath() on Unix, since no other will properly clean out
3540     # a directory spec.
3541     use Cwd qw/realpath/;
3542
3543     return realpath($dir);
3544 }
3545
3546 sub quotify {
3547     my %processors = (
3548         perl    => sub { my $x = shift;
3549                          $x =~ s/([\\\$\@"])/\\$1/g;
3550                          return '"'.$x.'"'; },
3551         maybeshell => sub { my $x = shift;
3552                             (my $y = $x) =~ s/([\\\"])/\\$1/g;
3553                             if ($x ne $y || $x =~ m|\s|) {
3554                                 return '"'.$y.'"';
3555                             } else {
3556                                 return $x;
3557                             }
3558                         },
3559         );
3560     my $for = shift;
3561     my $processor =
3562         defined($processors{$for}) ? $processors{$for} : sub { shift; };
3563
3564     return map { $processor->($_); } @_;
3565 }
3566
3567 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
3568 # $filename is a file name to read from
3569 # $line_concat_cond_re is a regexp detecting a line continuation ending
3570 # $line_concat is a CODEref that takes care of concatenating two lines
3571 sub collect_from_file {
3572     my $filename = shift;
3573     my $line_concat_cond_re = shift;
3574     my $line_concat = shift;
3575
3576     open my $fh, $filename || die "unable to read $filename: $!\n";
3577     return sub {
3578         my $saved_line = "";
3579         $_ = "";
3580         while (<$fh>) {
3581             s|\R$||;
3582             if (defined $line_concat) {
3583                 $_ = $line_concat->($saved_line, $_);
3584                 $saved_line = "";
3585             }
3586             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3587                 $saved_line = $_;
3588                 next;
3589             }
3590             return $_;
3591         }
3592         die "$filename ending with continuation line\n" if $_;
3593         close $fh;
3594         return undef;
3595     }
3596 }
3597
3598 # collect_from_array($array, $line_concat_cond_re, $line_concat)
3599 # $array is an ARRAYref of lines
3600 # $line_concat_cond_re is a regexp detecting a line continuation ending
3601 # $line_concat is a CODEref that takes care of concatenating two lines
3602 sub collect_from_array {
3603     my $array = shift;
3604     my $line_concat_cond_re = shift;
3605     my $line_concat = shift;
3606     my @array = (@$array);
3607
3608     return sub {
3609         my $saved_line = "";
3610         $_ = "";
3611         while (defined($_ = shift @array)) {
3612             s|\R$||;
3613             if (defined $line_concat) {
3614                 $_ = $line_concat->($saved_line, $_);
3615                 $saved_line = "";
3616             }
3617             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3618                 $saved_line = $_;
3619                 next;
3620             }
3621             return $_;
3622         }
3623         die "input text ending with continuation line\n" if $_;
3624         return undef;
3625     }
3626 }
3627
3628 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
3629 # $lineiterator is a CODEref that delivers one line at a time.
3630 # All following arguments are regex/CODEref pairs, where the regexp detects a
3631 # line and the CODEref does something with the result of the regexp.
3632 sub collect_information {
3633     my $lineiterator = shift;
3634     my %collectors = @_;
3635
3636     while(defined($_ = $lineiterator->())) {
3637         s|\R$||;
3638         my $found = 0;
3639         if ($collectors{"BEFORE"}) {
3640             $collectors{"BEFORE"}->($_);
3641         }
3642         foreach my $re (keys %collectors) {
3643             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
3644                 $collectors{$re}->($lineiterator);
3645                 $found = 1;
3646             };
3647         }
3648         if ($collectors{"OTHERWISE"}) {
3649             $collectors{"OTHERWISE"}->($lineiterator, $_)
3650                 unless $found || !defined $collectors{"OTHERWISE"};
3651         }
3652         if ($collectors{"AFTER"}) {
3653             $collectors{"AFTER"}->($_);
3654         }
3655     }
3656 }
3657
3658 # tokenize($line)
3659 # tokenize($line,$separator)
3660 # $line is a line of text to split up into tokens
3661 # $separator [optional] is a regular expression that separates the tokens,
3662 # the default being spaces.  Do not use quotes of any kind as separators,
3663 # that will give undefined results.
3664 # Returns a list of tokens.
3665 #
3666 # Tokens are divided by separator (spaces by default).  If the tokens include
3667 # the separators, they have to be quoted with single or double quotes.
3668 # Double quotes inside a double quoted token must be escaped.  Escaping is done
3669 # with backslash.
3670 # Basically, the same quoting rules apply for " and ' as in any
3671 # Unix shell.
3672 sub tokenize {
3673     my $line = my $debug_line = shift;
3674     my $separator = shift // qr|\s+|;
3675     my @result = ();
3676
3677     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
3678         print STDERR "DEBUG[tokenize]: \$separator = $separator\n";
3679     }
3680
3681     while ($line =~ s|^${separator}||, $line ne "") {
3682         my $token = "";
3683     again:
3684         $line =~ m/^(.*?)(${separator}|"|'|$)/;
3685         $token .= $1;
3686         $line = $2.$';
3687
3688         if ($line =~ m/^"((?:[^"\\]+|\\.)*)"/) {
3689             $token .= $1;
3690             $line = $';
3691             goto again;
3692         } elsif ($line =~ m/^'([^']*)'/) {
3693             $token .= $1;
3694             $line = $';
3695             goto again;
3696         }
3697         push @result, $token;
3698     }
3699
3700     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
3701         print STDERR "DEBUG[tokenize]: Parsed '$debug_line' into:\n";
3702         print STDERR "DEBUG[tokenize]: ('", join("', '", @result), "')\n";
3703     }
3704     return @result;
3705 }