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