Configure

   1 #! /usr/bin/env perl
   2 # -*- mode: perl; -*-
   3 # Copyright 2016-2019 The OpenSSL Project Authors. All Rights Reserved.
   4 #
   5 # Licensed under the OpenSSL license (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/;
  19 use File::Path qw/mkpath/;
  20 use OpenSSL::Glob;
  21
  22 # see INSTALL for instructions.
  23
  24 my $orig_death_handler = $SIG{__DIE__};
  25 $SIG{__DIE__} = \&death_handler;
  26
  27 my $usage="Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-Kxxx] [no-hw-xxx|no-hw] [[no-]threads] [[no-]shared] [[no-]zlib|zlib-dynamic] [no-asm] [no-egd] [sctp] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--with-xxx[=vvv]] [--config=FILE] os/compiler[:flags]\n";
  28
  29 # Options:
  30 #
  31 # --config      add the given configuration file, which will be read after
  32 #               any "Configurations*" files that are found in the same
  33 #               directory as this script.
  34 # --prefix      prefix for the OpenSSL installation, which includes the
  35 #               directories bin, lib, include, share/man, share/doc/openssl
  36 #               This becomes the value of INSTALLTOP in Makefile
  37 #               (Default: /usr/local)
  38 # --openssldir  OpenSSL data area, such as openssl.cnf, certificates and keys.
  39 #               If it's a relative directory, it will be added on the directory
  40 #               given with --prefix.
  41 #               This becomes the value of OPENSSLDIR in Makefile and in C.
  42 #               (Default: PREFIX/ssl)
  43 #
  44 # --cross-compile-prefix Add specified prefix to binutils components.
  45 #
  46 # --api         One of 0.9.8, 1.0.0 or 1.1.0.  Do not compile support for
  47 #               interfaces deprecated as of the specified OpenSSL version.
  48 #
  49 # no-hw-xxx     do not compile support for specific crypto hardware.
  50 #               Generic OpenSSL-style methods relating to this support
  51 #               are always compiled but return NULL if the hardware
  52 #               support isn't compiled.
  53 # no-hw         do not compile support for any crypto hardware.
  54 # [no-]threads  [don't] try to create a library that is suitable for
  55 #               multithreaded applications (default is "threads" if we
  56 #               know how to do it)
  57 # [no-]shared   [don't] try to create shared libraries when supported.
  58 # [no-]pic      [don't] try to build position independent code when supported.
  59 #               If disabled, it also disables shared and dynamic-engine.
  60 # no-asm        do not use assembler
  61 # no-egd        do not compile support for the entropy-gathering daemon APIs
  62 # [no-]zlib     [don't] compile support for zlib compression.
  63 # zlib-dynamic  Like "zlib", but the zlib library is expected to be a shared
  64 #               library and will be loaded in run-time by the OpenSSL library.
  65 # sctp          include SCTP support
  66 # enable-weak-ssl-ciphers
  67 #               Enable weak ciphers that are disabled by default.
  68 # 386           generate 80386 code in assembly modules
  69 # no-sse2       disables IA-32 SSE2 code in assembly modules, the above
  70 #               mentioned '386' option implies this one
  71 # no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
  72 # -<xxx> +<xxx> compiler options are passed through
  73 # -static       while -static is also a pass-through compiler option (and
  74 #               as such is limited to environments where it's actually
  75 #               meaningful), it triggers a number configuration options,
  76 #               namely no-pic, no-shared and no-threads. It is
  77 #               argued that the only reason to produce statically linked
  78 #               binaries (and in context it means executables linked with
  79 #               -static flag, and not just executables linked with static
  80 #               libcrypto.a) is to eliminate dependency on specific run-time,
  81 #               a.k.a. libc version. The mentioned config options are meant
  82 #               to achieve just that. Unfortunately on Linux it's impossible
  83 #               to eliminate the dependency completely for openssl executable
  84 #               because of getaddrinfo and gethostbyname calls, which can
  85 #               invoke dynamically loadable library facility anyway to meet
  86 #               the lookup requests. For this reason on Linux statically
  87 #               linked openssl executable has rather debugging value than
  88 #               production quality.
  89 #
  90 # DEBUG_SAFESTACK use type-safe stacks to enforce type-safety on stack items
  91 #               provided to stack calls. Generates unique stack functions for
  92 #               each possible stack type.
  93 # BN_LLONG      use the type 'long long' in crypto/bn/bn.h
  94 # RC4_CHAR      use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
  95 # Following are set automatically by this script
  96 #
  97 # MD5_ASM       use some extra md5 assembler,
  98 # SHA1_ASM      use some extra sha1 assembler, must define L_ENDIAN for x86
  99 # RMD160_ASM    use some extra ripemd160 assembler,
 100 # SHA256_ASM    sha256_block is implemented in assembler
 101 # SHA512_ASM    sha512_block is implemented in assembler
 102 # AES_ASM       AES_[en|de]crypt is implemented in assembler
 103
 104 # Minimum warning options... any contributions to OpenSSL should at least get
 105 # past these.
 106
 107 # DEBUG_UNUSED enables __owur (warn unused result) checks.
 108 # -DPEDANTIC complements -pedantic and is meant to mask code that
 109 # is not strictly standard-compliant and/or implementation-specific,
 110 # e.g. inline assembly, disregards to alignment requirements, such
 111 # that -pedantic would complain about. Incidentally -DPEDANTIC has
 112 # to be used even in sanitized builds, because sanitizer too is
 113 # supposed to and does take notice of non-standard behaviour. Then
 114 # -pedantic with pre-C9x compiler would also complain about 'long
 115 # long' not being supported. As 64-bit algorithms are common now,
 116 # it grew impossible to resolve this without sizeable additional
 117 # code, so we just tell compiler to be pedantic about everything
 118 # but 'long long' type.
 119
 120 my %gcc_devteam_warn = ();
 121 {
 122     my @common = qw( -DDEBUG_UNUSED
 123                      -DPEDANTIC -pedantic -Wno-long-long
 124                      -Wall
 125                      -Wextra
 126                      -Wno-unused-parameter
 127                      -Wno-missing-field-initializers
 128                      -Wswitch
 129                      -Wsign-compare
 130                      -Wshadow
 131                      -Wformat
 132                      -Wtype-limits
 133                      -Wundef
 134                      -Werror );
 135     %gcc_devteam_warn = (
 136         CFLAGS          => [ @common, qw( -Wmissing-prototypes
 137                                           -Wstrict-prototypes ) ],
 138         CXXFLAGS        => [ @common ]
 139     );
 140 }
 141
 142 # These are used in addition to $gcc_devteam_warn when the compiler is clang.
 143 # TODO(openssl-team): fix problems and investigate if (at least) the
 144 # following warnings can also be enabled:
 145 #       -Wcast-align
 146 #       -Wunreachable-code -- no, too ugly/compiler-specific
 147 #       -Wlanguage-extension-token -- no, we use asm()
 148 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
 149 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
 150 my %clang_devteam_warn = ();
 151 {
 152     my @common = qw( -Wswitch-default
 153                      -Wno-parentheses-equality
 154                      -Wno-language-extension-token
 155                      -Wno-extended-offsetof
 156                      -Wconditional-uninitialized
 157                      -Wincompatible-pointer-types-discards-qualifiers
 158                      -Wno-unknown-warning-option );
 159     %clang_devteam_warn = (
 160         CFLAGS          => [ @common, qw( -Wmissing-variable-declarations ) ],
 161         CXXFLAGS        => [ @common ]
 162     );
 163 }
 164
 165 # This adds backtrace information to the memory leak info.  Is only used
 166 # when crypto-mdebug-backtrace is enabled.
 167 my $memleak_devteam_backtrace = "-rdynamic";
 168
 169 my $strict_warnings = 0;
 170
 171 # As for $BSDthreads. Idea is to maintain "collective" set of flags,
 172 # which would cover all BSD flavors. -pthread applies to them all,
 173 # but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
 174 # -lc_r, which is sufficient. FreeBSD 4.x expands it as -lc_r,
 175 # which has to be accompanied by explicit -D_THREAD_SAFE and
 176 # sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
 177 # seems to be sufficient?
 178 our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
 179
 180 #
 181 # API compatibility name to version number mapping.
 182 #
 183 my $maxapi = "1.1.0";           # API for "no-deprecated" builds
 184 my $apitable = {
 185     "1.1.0" => "0x10100000L",
 186     "1.0.0" => "0x10000000L",
 187     "0.9.8" => "0x00908000L",
 188 };
 189
 190 our %table = ();
 191 our %config = ();
 192 our %withargs = ();
 193 our $now_printing;      # set to current entry's name in print_table_entry
 194                         # (todo: right thing would be to encapsulate name
 195                         # into %target [class] and make print_table_entry
 196                         # a method)
 197
 198 # Forward declarations ###############################################
 199
 200 # read_config(filename)
 201 #
 202 # Reads a configuration file and populates %table with the contents
 203 # (which the configuration file places in %targets).
 204 sub read_config;
 205
 206 # resolve_config(target)
 207 #
 208 # Resolves all the late evaluations, inheritances and so on for the
 209 # chosen target and any target it inherits from.
 210 sub resolve_config;
 211
 212
 213 # Information collection #############################################
 214
 215 # Unified build supports separate build dir
 216 my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
 217 my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
 218 my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));
 219
 220 my $local_config_envname = 'OPENSSL_LOCAL_CONFIG_DIR';
 221
 222 $config{sourcedir} = abs2rel($srcdir);
 223 $config{builddir} = abs2rel($blddir);
 224
 225 # Collect reconfiguration information if needed
 226 my @argvcopy=@ARGV;
 227
 228 if (grep /^reconf(igure)?$/, @argvcopy) {
 229     die "reconfiguring with other arguments present isn't supported"
 230         if scalar @argvcopy > 1;
 231     if (-f "./configdata.pm") {
 232         my $file = "./configdata.pm";
 233         unless (my $return = do $file) {
 234             die "couldn't parse $file: $@" if $@;
 235             die "couldn't do $file: $!"    unless defined $return;
 236             die "couldn't run $file"       unless $return;
 237         }
 238
 239         @argvcopy = defined($configdata::config{perlargv}) ?
 240             @{$configdata::config{perlargv}} : ();
 241         die "Incorrect data to reconfigure, please do a normal configuration\n"
 242             if (grep(/^reconf/,@argvcopy));
 243         $config{perlenv} = $configdata::config{perlenv} // {};
 244     } else {
 245         die "Insufficient data to reconfigure, please do a normal configuration\n";
 246     }
 247 }
 248
 249 $config{perlargv} = [ @argvcopy ];
 250
 251 # Collect version numbers
 252 $config{version} = "unknown";
 253 $config{version_num} = "unknown";
 254 $config{shlib_version_number} = "unknown";
 255 $config{shlib_version_history} = "unknown";
 256
 257 collect_information(
 258     collect_from_file(catfile($srcdir,'include/openssl/opensslv.h')),
 259     qr/OPENSSL.VERSION.TEXT.*OpenSSL (\S+) / => sub { $config{version} = $1; },
 260     qr/OPENSSL.VERSION.NUMBER.*(0x\S+)/      => sub { $config{version_num}=$1 },
 261     qr/SHLIB_VERSION_NUMBER *"([^"]+)"/      => sub { $config{shlib_version_number}=$1 },
 262     qr/SHLIB_VERSION_HISTORY *"([^"]*)"/     => sub { $config{shlib_version_history}=$1 }
 263     );
 264 if ($config{shlib_version_history} ne "") { $config{shlib_version_history} .= ":"; }
 265
 266 ($config{major}, $config{minor})
 267     = ($config{version} =~ /^([0-9]+)\.([0-9\.]+)/);
 268 ($config{shlib_major}, $config{shlib_minor})
 269     = ($config{shlib_version_number} =~ /^([0-9]+)\.([0-9\.]+)/);
 270 die "erroneous version information in opensslv.h: ",
 271     "$config{major}, $config{minor}, $config{shlib_major}, $config{shlib_minor}\n"
 272     if ($config{major} eq "" || $config{minor} eq ""
 273         || $config{shlib_major} eq "" ||  $config{shlib_minor} eq "");
 274
 275 # Collect target configurations
 276
 277 my $pattern = catfile(dirname($0), "Configurations", "*.conf");
 278 foreach (sort glob($pattern)) {
 279     &read_config($_);
 280 }
 281
 282 if (defined env($local_config_envname)) {
 283     if ($^O eq 'VMS') {
 284         # VMS environment variables are logical names,
 285         # which can be used as is
 286         $pattern = $local_config_envname . ':' . '*.conf';
 287     } else {
 288         $pattern = catfile(env($local_config_envname), '*.conf');
 289     }
 290
 291     foreach (sort glob($pattern)) {
 292         &read_config($_);
 293     }
 294 }
 295
 296 # Save away perl command information
 297 $config{perl_cmd} = $^X;
 298 $config{perl_version} = $Config{version};
 299 $config{perl_archname} = $Config{archname};
 300
 301 $config{prefix}="";
 302 $config{openssldir}="";
 303 $config{processor}="";
 304 $config{libdir}="";
 305 my $auto_threads=1;    # enable threads automatically? true by default
 306 my $default_ranlib;
 307
 308 # Top level directories to build
 309 $config{dirs} = [ "crypto", "ssl", "engines", "apps", "test", "util", "tools", "fuzz" ];
 310 # crypto/ subdirectories to build
 311 $config{sdirs} = [
 312     "objects",
 313     "md2", "md4", "md5", "sha", "mdc2", "hmac", "ripemd", "whrlpool", "poly1305", "blake2", "siphash", "sm3",
 314     "des", "aes", "rc2", "rc4", "rc5", "idea", "aria", "bf", "cast", "camellia", "seed", "sm4", "chacha", "modes",
 315     "bn", "ec", "rsa", "dsa", "dh", "sm2", "dso", "engine",
 316     "buffer", "bio", "stack", "lhash", "rand", "err",
 317     "evp", "asn1", "pem", "x509", "x509v3", "conf", "txt_db", "pkcs7", "pkcs12", "comp", "ocsp", "ui",
 318     "cms", "ts", "srp", "cmac", "ct", "async", "kdf", "store"
 319     ];
 320 # test/ subdirectories to build
 321 $config{tdirs} = [ "ossl_shim" ];
 322
 323 # Known TLS and DTLS protocols
 324 my @tls = qw(ssl3 tls1 tls1_1 tls1_2 tls1_3);
 325 my @dtls = qw(dtls1 dtls1_2);
 326
 327 # Explicitly known options that are possible to disable.  They can
 328 # be regexps, and will be used like this: /^no-${option}$/
 329 # For developers: keep it sorted alphabetically
 330
 331 my @disablables = (
 332     "afalgeng",
 333     "aria",
 334     "asan",
 335     "asm",
 336     "async",
 337     "autoalginit",
 338     "autoerrinit",
 339     "autoload-config",
 340     "bf",
 341     "blake2",
 342     "camellia",
 343     "capieng",
 344     "cast",
 345     "chacha",
 346     "cmac",
 347     "cms",
 348     "comp",
 349     "crypto-mdebug",
 350     "crypto-mdebug-backtrace",
 351     "ct",
 352     "deprecated",
 353     "des",
 354     "devcryptoeng",
 355     "dgram",
 356     "dh",
 357     "dsa",
 358     "dtls",
 359     "dynamic-engine",
 360     "ec",
 361     "ec2m",
 362     "ecdh",
 363     "ecdsa",
 364     "ec_nistp_64_gcc_128",
 365     "egd",
 366     "engine",
 367     "err",
 368     "external-tests",
 369     "filenames",
 370     "fuzz-libfuzzer",
 371     "fuzz-afl",
 372     "gost",
 373     "heartbeats",
 374     "hw(-.+)?",
 375     "idea",
 376     "makedepend",
 377     "md2",
 378     "md4",
 379     "mdc2",
 380     "msan",
 381     "multiblock",
 382     "nextprotoneg",
 383     "pinshared",
 384     "ocb",
 385     "ocsp",
 386     "pic",
 387     "poly1305",
 388     "posix-io",
 389     "psk",
 390     "rc2",
 391     "rc4",
 392     "rc5",
 393     "rdrand",
 394     "rfc3779",
 395     "rmd160",
 396     "scrypt",
 397     "sctp",
 398     "seed",
 399     "shared",
 400     "siphash",
 401     "sm2",
 402     "sm3",
 403     "sm4",
 404     "sock",
 405     "srp",
 406     "srtp",
 407     "sse2",
 408     "ssl",
 409     "ssl-trace",
 410     "static-engine",
 411     "stdio",
 412     "tests",
 413     "threads",
 414     "tls",
 415     "ts",
 416     "ubsan",
 417     "ui-console",
 418     "unit-test",
 419     "whirlpool",
 420     "weak-ssl-ciphers",
 421     "zlib",
 422     "zlib-dynamic",
 423     );
 424 foreach my $proto ((@tls, @dtls))
 425         {
 426         push(@disablables, $proto);
 427         push(@disablables, "$proto-method") unless $proto eq "tls1_3";
 428         }
 429
 430 my %deprecated_disablables = (
 431     "ssl2" => undef,
 432     "buf-freelists" => undef,
 433     "ripemd" => "rmd160",
 434     "ui" => "ui-console",
 435     "dso" => "",                # Empty string means we're silent about it
 436     );
 437
 438 # All of the following are disabled by default:
 439
 440 our %disabled = ( # "what"         => "comment"
 441                   "asan"                => "default",
 442                   "crypto-mdebug"       => "default",
 443                   "crypto-mdebug-backtrace" => "default",
 444                   "devcryptoeng"        => "default",
 445                   "ec_nistp_64_gcc_128" => "default",
 446                   "egd"                 => "default",
 447                   "external-tests"      => "default",
 448                   "fuzz-libfuzzer"      => "default",
 449                   "fuzz-afl"            => "default",
 450                   "heartbeats"          => "default",
 451                   "md2"                 => "default",
 452                   "msan"                => "default",
 453                   "rc5"                 => "default",
 454                   "sctp"                => "default",
 455                   "ssl-trace"           => "default",
 456                   "ssl3"                => "default",
 457                   "ssl3-method"         => "default",
 458                   "ubsan"               => "default",
 459                   "unit-test"           => "default",
 460                   "weak-ssl-ciphers"    => "default",
 461                   "zlib"                => "default",
 462                   "zlib-dynamic"        => "default",
 463                 );
 464
 465 # Note: => pair form used for aesthetics, not to truly make a hash table
 466 my @disable_cascades = (
 467     # "what"            => [ "cascade", ... ]
 468     sub { $config{processor} eq "386" }
 469                         => [ "sse2" ],
 470     "ssl"               => [ "ssl3" ],
 471     "ssl3-method"       => [ "ssl3" ],
 472     "zlib"              => [ "zlib-dynamic" ],
 473     "des"               => [ "mdc2" ],
 474     "ec"                => [ "ecdsa", "ecdh" ],
 475
 476     "dgram"             => [ "dtls", "sctp" ],
 477     "sock"              => [ "dgram" ],
 478     "dtls"              => [ @dtls ],
 479     sub { 0 == scalar grep { !$disabled{$_} } @dtls }
 480                         => [ "dtls" ],
 481
 482     "tls"               => [ @tls ],
 483     sub { 0 == scalar grep { !$disabled{$_} } @tls }
 484                         => [ "tls" ],
 485
 486     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
 487
 488     # Without position independent code, there can be no shared libraries or DSOs
 489     "pic"               => [ "shared" ],
 490     "shared"            => [ "dynamic-engine" ],
 491     "engine"            => [ "afalgeng", "devcryptoeng" ],
 492
 493     # no-autoalginit is only useful when building non-shared
 494     "autoalginit"       => [ "shared", "apps" ],
 495
 496     "stdio"             => [ "apps", "capieng", "egd" ],
 497     "apps"              => [ "tests" ],
 498     "tests"             => [ "external-tests" ],
 499     "comp"              => [ "zlib" ],
 500     "ec"                => [ "tls1_3", "sm2" ],
 501     "sm3"               => [ "sm2" ],
 502     sub { !$disabled{"unit-test"} } => [ "heartbeats" ],
 503
 504     sub { !$disabled{"msan"} } => [ "asm" ],
 505     );
 506
 507 # Avoid protocol support holes.  Also disable all versions below N, if version
 508 # N is disabled while N+1 is enabled.
 509 #
 510 my @list = (reverse @tls);
 511 while ((my $first, my $second) = (shift @list, shift @list)) {
 512     last unless @list;
 513     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 514                               => [ @list ] );
 515     unshift @list, $second;
 516 }
 517 my @list = (reverse @dtls);
 518 while ((my $first, my $second) = (shift @list, shift @list)) {
 519     last unless @list;
 520     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 521                               => [ @list ] );
 522     unshift @list, $second;
 523 }
 524
 525 # Explicit "no-..." options will be collected in %disabled along with the defaults.
 526 # To remove something from %disabled, use "enable-foo".
 527 # For symmetry, "disable-foo" is a synonym for "no-foo".
 528
 529 &usage if ($#ARGV < 0);
 530
 531 # For the "make variables" CINCLUDES and CDEFINES, we support lists with
 532 # platform specific list separators.  Users from those platforms should
 533 # recognise those separators from how you set up the PATH to find executables.
 534 # The default is the Unix like separator, :, but as an exception, we also
 535 # support the space as separator.
 536 my $list_separator_re =
 537     { VMS           => qr/(?<!\^),/,
 538       MSWin32       => qr/(?<!\\);/ } -> {$^O} // qr/(?<!\\)[:\s]/;
 539 # All the "make variables" we support
 540 # Some get pre-populated for the sake of backward compatibility
 541 # (we supported those before the change to "make variable" support.
 542 my %user = (
 543     AR          => env('AR'),
 544     ARFLAGS     => [],
 545     AS          => undef,
 546     ASFLAGS     => [],
 547     CC          => env('CC'),
 548     CFLAGS      => [ env('CFLAGS') || () ],
 549     CXX         => env('CXX'),
 550     CXXFLAGS    => [ env('CXXFLAGS') || () ],
 551     CPP         => undef,
 552     CPPFLAGS    => [ env('CPPFLAGS') || () ],  # -D, -I, -Wp,
 553     CPPDEFINES  => [],  # Alternative for -D
 554     CPPINCLUDES => [],  # Alternative for -I
 555     CROSS_COMPILE => env('CROSS_COMPILE'),
 556     HASHBANGPERL=> env('HASHBANGPERL') || env('PERL'),
 557     LD          => undef,
 558     LDFLAGS     => [ env('LDFLAGS') || () ],  # -L, -Wl,
 559     LDLIBS      => [ env('LDLIBS') || () ],  # -l
 560     MT          => undef,
 561     MTFLAGS     => [],
 562     PERL        => env('PERL') || ($^O ne "VMS" ? $^X : "perl"),
 563     RANLIB      => env('RANLIB'),
 564     RC          => env('RC') || env('WINDRES'),
 565     RCFLAGS     => [ env('RCFLAGS') || () ],
 566     RM          => undef,
 567    );
 568 # Info about what "make variables" may be prefixed with the cross compiler
 569 # prefix.  This should NEVER mention any such variable with a list for value.
 570 my @user_crossable = qw ( AR AS CC CXX CPP LD MT RANLIB RC );
 571 # The same but for flags given as Configure options.  These are *additional*
 572 # input, as opposed to the VAR=string option that override the corresponding
 573 # config target attributes
 574 my %useradd = (
 575     CPPDEFINES  => [],
 576     CPPINCLUDES => [],
 577     CPPFLAGS    => [],
 578     CFLAGS      => [],
 579     CXXFLAGS    => [],
 580     LDFLAGS     => [],
 581     LDLIBS      => [],
 582     RCFLAGS     => [],
 583    );
 584
 585 my %user_synonyms = (
 586     HASHBANGPERL=> 'PERL',
 587     RC          => 'WINDRES',
 588    );
 589
 590 # Some target attributes have been renamed, this is the translation table
 591 my %target_attr_translate =(
 592     ar          => 'AR',
 593     as          => 'AS',
 594     cc          => 'CC',
 595     cxx         => 'CXX',
 596     cpp         => 'CPP',
 597     hashbangperl => 'HASHBANGPERL',
 598     ld          => 'LD',
 599     mt          => 'MT',
 600     ranlib      => 'RANLIB',
 601     rc          => 'RC',
 602     rm          => 'RM',
 603    );
 604
 605 # Initialisers coming from 'config' scripts
 606 $config{defines} = [ split(/$list_separator_re/, env('__CNF_CPPDEFINES')) ];
 607 $config{includes} = [ split(/$list_separator_re/, env('__CNF_CPPINCLUDES')) ];
 608 $config{cppflags} = [ env('__CNF_CPPFLAGS') || () ];
 609 $config{cflags} = [ env('__CNF_CFLAGS') || () ];
 610 $config{cxxflags} = [ env('__CNF_CXXFLAGS') || () ];
 611 $config{lflags} = [ env('__CNF_LDFLAGS') || () ];
 612 $config{ex_libs} = [ env('__CNF_LDLIBS') || () ];
 613
 614 $config{openssl_api_defines}=[];
 615 $config{openssl_algorithm_defines}=[];
 616 $config{openssl_thread_defines}=[];
 617 $config{openssl_sys_defines}=[];
 618 $config{openssl_other_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{$1})
 719                         {
 720                         if ($deprecated_disablables{$1} ne "")
 721                                 {
 722                                 $deprecated_options{$_} = 1;
 723                                 if (defined $deprecated_disablables{$1})
 724                                         {
 725                                         $disabled{$deprecated_disablables{$1}} = "option";
 726                                         }
 727                                 }
 728                         }
 729                 else
 730                         {
 731                         $disabled{$1} = "option";
 732                         }
 733                 # No longer an automatic choice
 734                 $auto_threads = 0 if ($1 eq "threads");
 735                 }
 736         elsif (/^enable-(.+)$/)
 737                 {
 738                 if ($1 eq "static-engine")
 739                         {
 740                         $disabled{"dynamic-engine"} = "option";
 741                         }
 742                 elsif ($1 eq "dynamic-engine")
 743                         {
 744                         delete $disabled{"dynamic-engine"};
 745                         }
 746                 elsif ($1 eq "zlib-dynamic")
 747                         {
 748                         delete $disabled{"zlib"};
 749                         }
 750                 my $algo = $1;
 751                 delete $disabled{$algo};
 752
 753                 # No longer an automatic choice
 754                 $auto_threads = 0 if ($1 eq "threads");
 755                 }
 756         elsif (/^--strict-warnings$/)
 757                 {
 758                 # Pretend that our strict flags is a C flag, and replace it
 759                 # with the proper flags later on
 760                 push @{$useradd{CFLAGS}}, '--ossl-strict-warnings';
 761                 push @{$useradd{CXXFLAGS}}, '--ossl-strict-warnings';
 762                 $strict_warnings=1;
 763                 }
 764         elsif (/^--debug$/)
 765                 {
 766                 $config{build_type} = "debug";
 767                 }
 768         elsif (/^--release$/)
 769                 {
 770                 $config{build_type} = "release";
 771                 }
 772         elsif (/^386$/)
 773                 { $config{processor}=386; }
 774         elsif (/^fips$/)
 775                 {
 776                 die "FIPS mode not supported\n";
 777                 }
 778         elsif (/^rsaref$/)
 779                 {
 780                 # No RSAref support any more since it's not needed.
 781                 # The check for the option is there so scripts aren't
 782                 # broken
 783                 }
 784         elsif (/^nofipscanistercheck$/)
 785                 {
 786                 die "FIPS mode not supported\n";
 787                 }
 788         elsif (/^[-+]/)
 789                 {
 790                 if (/^--prefix=(.*)$/)
 791                         {
 792                         $config{prefix}=$1;
 793                         die "Directory given with --prefix MUST be absolute\n"
 794                                 unless file_name_is_absolute($config{prefix});
 795                         }
 796                 elsif (/^--api=(.*)$/)
 797                         {
 798                         $config{api}=$1;
 799                         }
 800                 elsif (/^--libdir=(.*)$/)
 801                         {
 802                         $config{libdir}=$1;
 803                         }
 804                 elsif (/^--openssldir=(.*)$/)
 805                         {
 806                         $config{openssldir}=$1;
 807                         }
 808                 elsif (/^--with-zlib-lib=(.*)$/)
 809                         {
 810                         $withargs{zlib_lib}=$1;
 811                         }
 812                 elsif (/^--with-zlib-include=(.*)$/)
 813                         {
 814                         $withargs{zlib_include}=$1;
 815                         }
 816                 elsif (/^--with-fuzzer-lib=(.*)$/)
 817                         {
 818                         $withargs{fuzzer_lib}=$1;
 819                         }
 820                 elsif (/^--with-fuzzer-include=(.*)$/)
 821                         {
 822                         $withargs{fuzzer_include}=$1;
 823                         }
 824                 elsif (/^--with-rand-seed=(.*)$/)
 825                         {
 826                         foreach my $x (split(m|,|, $1))
 827                             {
 828                             die "Unknown --with-rand-seed choice $x\n"
 829                                 if ! grep { $x eq $_ } @known_seed_sources;
 830                             push @seed_sources, $x;
 831                             }
 832                         }
 833                 elsif (/^--cross-compile-prefix=(.*)$/)
 834                         {
 835                         $user{CROSS_COMPILE}=$1;
 836                         }
 837                 elsif (/^--config=(.*)$/)
 838                         {
 839                         read_config $1;
 840                         }
 841                 elsif (/^-l(.*)$/)
 842                         {
 843                         push @{$useradd{LDLIBS}}, $_;
 844                         }
 845                 elsif (/^-framework$/)
 846                         {
 847                         push @{$useradd{LDLIBS}}, $_, shift(@argvcopy);
 848                         }
 849                 elsif (/^-L(.*)$/ or /^-Wl,/)
 850                         {
 851                         push @{$useradd{LDFLAGS}}, $_;
 852                         }
 853                 elsif (/^-rpath$/ or /^-R$/)
 854                         # -rpath is the OSF1 rpath flag
 855                         # -R is the old Solaris rpath flag
 856                         {
 857                         my $rpath = shift(@argvcopy) || "";
 858                         $rpath .= " " if $rpath ne "";
 859                         push @{$useradd{LDFLAGS}}, $_, $rpath;
 860                         }
 861                 elsif (/^-static$/)
 862                         {
 863                         push @{$useradd{LDFLAGS}}, $_;
 864                         }
 865                 elsif (/^-D(.*)$/)
 866                         {
 867                         push @{$useradd{CPPDEFINES}}, $1;
 868                         }
 869                 elsif (/^-I(.*)$/)
 870                         {
 871                         push @{$useradd{CPPINCLUDES}}, $1;
 872                         }
 873                 elsif (/^-Wp,$/)
 874                         {
 875                         push @{$useradd{CPPFLAGS}}, $1;
 876                         }
 877                 else    # common if (/^[-+]/), just pass down...
 878                         {
 879                         $_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
 880                         push @{$useradd{CFLAGS}}, $_;
 881                         push @{$useradd{CXXFLAGS}}, $_;
 882                         }
 883                 }
 884         else
 885                 {
 886                 die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
 887                 $target=$_;
 888                 }
 889         unless ($_ eq $target || /^no-/ || /^disable-/)
 890                 {
 891                 # "no-..." follows later after implied deactivations
 892                 # have been derived.  (Don't take this too seriously,
 893                 # we really only write OPTIONS to the Makefile out of
 894                 # nostalgia.)
 895
 896                 if ($config{options} eq "")
 897                         { $config{options} = $_; }
 898                 else
 899                         { $config{options} .= " ".$_; }
 900                 }
 901         }
 902
 903 if (defined($config{api}) && !exists $apitable->{$config{api}}) {
 904         die "***** Unsupported api compatibility level: $config{api}\n",
 905 }
 906
 907 if (keys %deprecated_options)
 908         {
 909         warn "***** Deprecated options: ",
 910                 join(", ", keys %deprecated_options), "\n";
 911         }
 912 if (keys %unsupported_options)
 913         {
 914         die "***** Unsupported options: ",
 915                 join(", ", keys %unsupported_options), "\n";
 916         }
 917
 918 # If any %useradd entry has been set, we must check that the "make
 919 # variables" haven't been set.  We start by checking of any %useradd entry
 920 # is set.
 921 if (grep { scalar @$_ > 0 } values %useradd) {
 922     # Hash of env / make variables names.  The possible values are:
 923     # 1 - "make vars"
 924     # 2 - %useradd entry set
 925     # 3 - both set
 926     my %detected_vars =
 927         map { my $v = 0;
 928               $v += 1 if $cmdvars{$_};
 929               $v += 2 if @{$useradd{$_}};
 930               $_ => $v }
 931         keys %useradd;
 932
 933     # If any of the corresponding "make variables" is set, we error
 934     if (grep { $_ & 1 } values %detected_vars) {
 935         my $names = join(', ', grep { $detected_vars{$_} > 0 }
 936                                sort keys %detected_vars);
 937         die <<"_____";
 938 ***** Mixing make variables and additional compiler/linker flags as
 939 ***** configure command line option is not permitted.
 940 ***** Affected make variables: $names
 941 _____
 942     }
 943 }
 944
 945 # Check through all supported command line variables to see if any of them
 946 # were set, and canonicalise the values we got.  If no compiler or linker
 947 # flag or anything else that affects %useradd was set, we also check the
 948 # environment for values.
 949 my $anyuseradd =
 950     grep { defined $_ && (ref $_ ne 'ARRAY' || @$_) } values %useradd;
 951 foreach (keys %user) {
 952     my $value = $cmdvars{$_};
 953     $value //= env($_) unless $anyuseradd;
 954     $value //=
 955         defined $user_synonyms{$_} ? $cmdvars{$user_synonyms{$_}} : undef;
 956     $value //= defined $user_synonyms{$_} ? env($user_synonyms{$_}) : undef
 957         unless $anyuseradd;
 958
 959     if (defined $value) {
 960         if (ref $user{$_} eq 'ARRAY') {
 961             $user{$_} = [ split /$list_separator_re/, $value ];
 962         } elsif (!defined $user{$_}) {
 963             $user{$_} = $value;
 964         }
 965     }
 966 }
 967
 968 if (grep { /-rpath\b/ } ($user{LDFLAGS} ? @{$user{LDFLAGS}} : ())
 969     && !$disabled{shared}
 970     && !($disabled{asan} && $disabled{msan} && $disabled{ubsan})) {
 971     die "***** Cannot simultaneously use -rpath, shared libraries, and\n",
 972         "***** any of asan, msan or ubsan\n";
 973 }
 974
 975 sub disable {
 976     my $disable_type = shift;
 977
 978     for (@_) {
 979         $disabled{$_} = $disable_type;
 980     }
 981
 982     my @tocheckfor = (@_ ? @_ : keys %disabled);
 983     while (@tocheckfor) {
 984         my %new_tocheckfor = ();
 985         my @cascade_copy = (@disable_cascades);
 986         while (@cascade_copy) {
 987             my ($test, $descendents) =
 988                 (shift @cascade_copy, shift @cascade_copy);
 989             if (ref($test) eq "CODE" ? $test->() : defined($disabled{$test})) {
 990                 foreach (grep { !defined($disabled{$_}) } @$descendents) {
 991                     $new_tocheckfor{$_} = 1; $disabled{$_} = "cascade";
 992                 }
 993             }
 994         }
 995         @tocheckfor = (keys %new_tocheckfor);
 996     }
 997 }
 998 disable();                     # First cascade run
 999
1000 our $die = sub { die @_; };
1001 if ($target eq "TABLE") {
1002     local $die = sub { warn @_; };
1003     foreach (sort keys %table) {
1004         print_table_entry($_, "TABLE");
1005     }
1006     exit 0;
1007 }
1008
1009 if ($target eq "LIST") {
1010     foreach (sort keys %table) {
1011         print $_,"\n" unless $table{$_}->{template};
1012     }
1013     exit 0;
1014 }
1015
1016 if ($target eq "HASH") {
1017     local $die = sub { warn @_; };
1018     print "%table = (\n";
1019     foreach (sort keys %table) {
1020         print_table_entry($_, "HASH");
1021     }
1022     exit 0;
1023 }
1024
1025 print "Configuring OpenSSL version $config{version} ($config{version_num}) ";
1026 print "for $target\n";
1027
1028 if (scalar(@seed_sources) == 0) {
1029     print "Using os-specific seed configuration\n";
1030     push @seed_sources, 'os';
1031 }
1032 if (scalar(grep { $_ eq 'none' } @seed_sources) > 0) {
1033     die "Cannot seed with none and anything else" if scalar(@seed_sources) > 1;
1034     warn <<_____ if scalar(@seed_sources) == 1;
1035
1036 ============================== WARNING ===============================
1037 You have selected the --with-rand-seed=none option, which effectively
1038 disables automatic reseeding of the OpenSSL random generator.
1039 All operations depending on the random generator such as creating keys
1040 will not work unless the random generator is seeded manually by the
1041 application.
1042
1043 Please read the 'Note on random number generation' section in the
1044 INSTALL instructions and the RAND_DRBG(7) manual page for more details.
1045 ============================== WARNING ===============================
1046
1047 _____
1048 }
1049 push @{$config{openssl_other_defines}},
1050      map { (my $x = $_) =~ tr|[\-a-z]|[_A-Z]|; "OPENSSL_RAND_SEED_$x" }
1051         @seed_sources;
1052
1053 # Backward compatibility?
1054 if ($target =~ m/^CygWin32(-.*)$/) {
1055     $target = "Cygwin".$1;
1056 }
1057
1058 # Support for legacy targets having a name starting with 'debug-'
1059 my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
1060 if ($d) {
1061     $config{build_type} = "debug";
1062
1063     # If we do not find debug-foo in the table, the target is set to foo.
1064     if (!$table{$target}) {
1065         $target = $t;
1066     }
1067 }
1068
1069 &usage if !$table{$target} || $table{$target}->{template};
1070
1071 $config{target} = $target;
1072 my %target = resolve_config($target);
1073
1074 foreach (keys %target_attr_translate) {
1075     $target{$target_attr_translate{$_}} = $target{$_}
1076         if $target{$_};
1077     delete $target{$_};
1078 }
1079
1080 %target = ( %{$table{DEFAULTS}}, %target );
1081
1082 my %conf_files = map { $_ => 1 } (@{$target{_conf_fname_int}});
1083 $config{conf_files} = [ sort keys %conf_files ];
1084
1085 # Using sub disable within these loops may prove fragile, so we run
1086 # a cascade afterwards
1087 foreach my $feature (@{$target{disable}}) {
1088     if (exists $deprecated_disablables{$feature}) {
1089         warn "***** config $target disables deprecated feature $feature\n";
1090     } elsif (!grep { $feature eq $_ } @disablables) {
1091         die "***** config $target disables unknown feature $feature\n";
1092     }
1093     $disabled{$feature} = 'config';
1094 }
1095 foreach my $feature (@{$target{enable}}) {
1096     if ("default" eq ($disabled{$feature} // "")) {
1097         if (exists $deprecated_disablables{$feature}) {
1098             warn "***** config $target enables deprecated feature $feature\n";
1099         } elsif (!grep { $feature eq $_ } @disablables) {
1100             die "***** config $target enables unknown feature $feature\n";
1101         }
1102         delete $disabled{$feature};
1103     }
1104 }
1105 disable();                      # Run a cascade now
1106
1107 $target{CXXFLAGS}//=$target{CFLAGS} if $target{CXX};
1108 $target{cxxflags}//=$target{cflags} if $target{CXX};
1109 $target{exe_extension}="";
1110 $target{exe_extension}=".exe" if ($config{target} eq "DJGPP"
1111                                   || $config{target} =~ /^(?:Cygwin|mingw)/);
1112 $target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
1113
1114 ($target{shared_extension_simple}=$target{shared_extension})
1115     =~ s|\.\$\(SHLIB_VERSION_NUMBER\)||
1116     unless defined($target{shared_extension_simple});
1117 $target{dso_extension}//=$target{shared_extension_simple};
1118 ($target{shared_import_extension}=$target{shared_extension_simple}.".a")
1119     if ($config{target} =~ /^(?:Cygwin|mingw)/);
1120
1121 # Fill %config with values from %user, and in case those are undefined or
1122 # empty, use values from %target (acting as a default).
1123 foreach (keys %user) {
1124     my $ref_type = ref $user{$_};
1125
1126     # Temporary function.  Takes an intended ref type (empty string or "ARRAY")
1127     # and a value that's to be coerced into that type.
1128     my $mkvalue = sub {
1129         my $type = shift;
1130         my $value = shift;
1131         my $undef_p = shift;
1132
1133         die "Too many arguments for \$mkvalue" if @_;
1134
1135         while (ref $value eq 'CODE') {
1136             $value = $value->();
1137         }
1138
1139         if ($type eq 'ARRAY') {
1140             return undef unless defined $value;
1141             return undef if ref $value ne 'ARRAY' && !$value;
1142             return undef if ref $value eq 'ARRAY' && !@$value;
1143             return [ $value ] unless ref $value eq 'ARRAY';
1144         }
1145         return undef unless $value;
1146         return $value;
1147     };
1148
1149     $config{$_} =
1150         $mkvalue->($ref_type, $user{$_})
1151         || $mkvalue->($ref_type, $target{$_});
1152     delete $config{$_} unless defined $config{$_};
1153 }
1154
1155 # Finish up %config by appending things the user gave us on the command line
1156 # apart from "make variables"
1157 foreach (keys %useradd) {
1158     # The must all be lists, so we assert that here
1159     die "internal error: \$useradd{$_} isn't an ARRAY\n"
1160         unless ref $useradd{$_} eq 'ARRAY';
1161
1162     if (defined $config{$_}) {
1163         push @{$config{$_}}, @{$useradd{$_}};
1164     } else {
1165         $config{$_} = [ @{$useradd{$_}} ];
1166     }
1167 }
1168 # At this point, we can forget everything about %user and %useradd,
1169 # because it's now all been merged into the corresponding $config entry
1170
1171 # Allow overriding the build file name
1172 $config{build_file} = env('BUILDFILE') || $target{build_file} || "Makefile";
1173
1174 my %disabled_info = ();         # For configdata.pm
1175 foreach my $what (sort keys %disabled) {
1176     $config{options} .= " no-$what";
1177
1178     if (!grep { $what eq $_ } ( 'threads', 'shared', 'pic',
1179                                 'dynamic-engine', 'makedepend',
1180                                 'zlib-dynamic', 'zlib', 'sse2' )) {
1181         (my $WHAT = uc $what) =~ s|-|_|g;
1182
1183         # Fix up C macro end names
1184         $WHAT = "RMD160" if $what eq "ripemd";
1185
1186         # fix-up crypto/directory name(s)
1187         $what = "ripemd" if $what eq "rmd160";
1188         $what = "whrlpool" if $what eq "whirlpool";
1189
1190         my $macro = $disabled_info{$what}->{macro} = "OPENSSL_NO_$WHAT";
1191
1192         if ((grep { $what eq $_ } @{$config{sdirs}})
1193                 && $what ne 'async' && $what ne 'err') {
1194             @{$config{sdirs}} = grep { $what ne $_} @{$config{sdirs}};
1195             $disabled_info{$what}->{skipped} = [ catdir('crypto', $what) ];
1196
1197             if ($what ne 'engine') {
1198                 push @{$config{openssl_algorithm_defines}}, $macro;
1199             } else {
1200                 @{$config{dirs}} = grep !/^engines$/, @{$config{dirs}};
1201                 push @{$disabled_info{engine}->{skipped}}, catdir('engines');
1202                 push @{$config{openssl_other_defines}}, $macro;
1203             }
1204         } else {
1205             push @{$config{openssl_other_defines}}, $macro;
1206         }
1207
1208     }
1209 }
1210
1211 # Make sure build_scheme is consistent.
1212 $target{build_scheme} = [ $target{build_scheme} ]
1213     if ref($target{build_scheme}) ne "ARRAY";
1214
1215 my ($builder, $builder_platform, @builder_opts) =
1216     @{$target{build_scheme}};
1217
1218 foreach my $checker (($builder_platform."-".$target{build_file}."-checker.pm",
1219                       $builder_platform."-checker.pm")) {
1220     my $checker_path = catfile($srcdir, "Configurations", $checker);
1221     if (-f $checker_path) {
1222         my $fn = $ENV{CONFIGURE_CHECKER_WARN}
1223             ? sub { warn $@; } : sub { die $@; };
1224         if (! do $checker_path) {
1225             if ($@) {
1226                 $fn->($@);
1227             } elsif ($!) {
1228                 $fn->($!);
1229             } else {
1230                 $fn->("The detected tools didn't match the platform\n");
1231             }
1232         }
1233         last;
1234     }
1235 }
1236
1237 push @{$config{defines}}, "NDEBUG"    if $config{build_type} eq "release";
1238
1239 if ($target =~ /^mingw/ && `$config{CC} --target-help 2>&1` =~ m/-mno-cygwin/m)
1240         {
1241         push @{$config{cflags}}, "-mno-cygwin";
1242         push @{$config{cxxflags}}, "-mno-cygwin" if $config{CXX};
1243         push @{$config{shared_ldflag}}, "-mno-cygwin";
1244         }
1245
1246 if ($target =~ /linux.*-mips/ && !$disabled{asm}
1247         && !grep { $_ !~ /-m(ips|arch=)/ } (@{$config{CFLAGS}})) {
1248         # minimally required architecture flags for assembly modules
1249         my $value;
1250         $value = '-mips2' if ($target =~ /mips32/);
1251         $value = '-mips3' if ($target =~ /mips64/);
1252         unshift @{$config{cflags}}, $value;
1253         unshift @{$config{cxxflags}}, $value if $config{CXX};
1254 }
1255
1256 # If threads aren't disabled, check how possible they are
1257 unless ($disabled{threads}) {
1258     if ($auto_threads) {
1259         # Enabled by default, disable it forcibly if unavailable
1260         if ($target{thread_scheme} eq "(unknown)") {
1261             disable("unavailable", 'threads');
1262         }
1263     } else {
1264         # The user chose to enable threads explicitly, let's see
1265         # if there's a chance that's possible
1266         if ($target{thread_scheme} eq "(unknown)") {
1267             # If the user asked for "threads" and we don't have internal
1268             # knowledge how to do it, [s]he is expected to provide any
1269             # system-dependent compiler options that are necessary.  We
1270             # can't truly check that the given options are correct, but
1271             # we expect the user to know what [s]He is doing.
1272             if (!@{$config{CFLAGS}} && !@{$config{CPPDEFINES}}) {
1273                 die "You asked for multi-threading support, but didn't\n"
1274                     ,"provide any system-specific compiler options\n";
1275             }
1276         }
1277     }
1278 }
1279
1280 # If threads still aren't disabled, add a C macro to ensure the source
1281 # code knows about it.  Any other flag is taken care of by the configs.
1282 unless($disabled{threads}) {
1283     push @{$config{openssl_thread_defines}}, "OPENSSL_THREADS";
1284 }
1285
1286 # With "deprecated" disable all deprecated features.
1287 if (defined($disabled{"deprecated"})) {
1288         $config{api} = $maxapi;
1289 }
1290
1291 my $no_shared_warn=0;
1292 if ($target{shared_target} eq "")
1293         {
1294         $no_shared_warn = 1
1295             if (!$disabled{shared} || !$disabled{"dynamic-engine"});
1296         disable('no-shared-target', 'pic');
1297         }
1298
1299 if ($disabled{"dynamic-engine"}) {
1300         push @{$config{openssl_other_defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
1301         $config{dynamic_engines} = 0;
1302 } else {
1303         push @{$config{openssl_other_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{dso_defines}}, "PADLOCK_ASM";
1418     }
1419     if ($target{poly1305_asm_src} ne "") {
1420         push @{$config{lib_defines}}, "POLY1305_ASM";
1421     }
1422 }
1423
1424 my %predefined_C = compiler_predefined($config{CROSS_COMPILE}.$config{CC});
1425 my %predefined_CXX = $config{CXX}
1426     ? compiler_predefined($config{CROSS_COMPILE}.$config{CXX})
1427     : ();
1428
1429 # Check for makedepend capabilities.
1430 if (!$disabled{makedepend}) {
1431     if ($config{target} =~ /^(VC|vms)-/) {
1432         # For VC- and vms- targets, there's nothing more to do here.  The
1433         # functionality is hard coded in the corresponding build files for
1434         # cl (Windows) and CC/DECC (VMS).
1435     } elsif (($predefined_C{__GNUC__} // -1) >= 3
1436              && !($predefined_C{__APPLE_CC__} && !$predefined_C{__clang__})) {
1437         # We know that GNU C version 3 and up as well as all clang
1438         # versions support dependency generation, but Xcode did not
1439         # handle $cc -M before clang support (but claims __GNUC__ = 3)
1440         $config{makedepprog} = "\$(CROSS_COMPILE)$config{CC}";
1441     } else {
1442         # In all other cases, we look for 'makedepend', and disable the
1443         # capability if not found.
1444         $config{makedepprog} = which('makedepend');
1445         disable('unavailable', 'makedepend') unless $config{makedepprog};
1446     }
1447 }
1448
1449 if (!$disabled{asm} && !$predefined_C{__MACH__} && $^O ne 'VMS') {
1450     # probe for -Wa,--noexecstack option...
1451     if ($predefined_C{__clang__}) {
1452         # clang has builtin assembler, which doesn't recognize --help,
1453         # but it apparently recognizes the option in question on all
1454         # supported platforms even when it's meaningless. In other words
1455         # probe would fail, but probed option always accepted...
1456         push @{$config{cflags}}, "-Wa,--noexecstack", "-Qunused-arguments";
1457     } else {
1458         my $cc = $config{CROSS_COMPILE}.$config{CC};
1459         open(PIPE, "$cc -Wa,--help -c -o null.$$.o -x assembler /dev/null 2>&1 |");
1460         while(<PIPE>) {
1461             if (m/--noexecstack/) {
1462                 push @{$config{cflags}}, "-Wa,--noexecstack";
1463                 last;
1464             }
1465         }
1466         close(PIPE);
1467         unlink("null.$$.o");
1468     }
1469 }
1470
1471 # Deal with bn_ops ###################################################
1472
1473 $config{bn_ll}                  =0;
1474 $config{export_var_as_fn}       =0;
1475 my $def_int="unsigned int";
1476 $config{rc4_int}                =$def_int;
1477 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
1478
1479 my $count = 0;
1480 foreach (sort split(/\s+/,$target{bn_ops})) {
1481     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
1482     $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
1483     $config{bn_ll}=1                            if $_ eq 'BN_LLONG';
1484     $config{rc4_int}="unsigned char"            if $_ eq 'RC4_CHAR';
1485     ($config{b64l},$config{b64},$config{b32})
1486         =(0,1,0)                                if $_ eq 'SIXTY_FOUR_BIT';
1487     ($config{b64l},$config{b64},$config{b32})
1488         =(1,0,0)                                if $_ eq 'SIXTY_FOUR_BIT_LONG';
1489     ($config{b64l},$config{b64},$config{b32})
1490         =(0,0,1)                                if $_ eq 'THIRTY_TWO_BIT';
1491 }
1492 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
1493     if $count > 1;
1494
1495
1496 # Hack cflags for better warnings (dev option) #######################
1497
1498 # "Stringify" the C and C++ flags string.  This permits it to be made part of
1499 # a string and works as well on command lines.
1500 $config{cflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
1501                         @{$config{cflags}} ];
1502 $config{cxxflags} = [ map { (my $x = $_) =~ s/([\\\"])/\\$1/g; $x }
1503                           @{$config{cxxflags}} ] if $config{CXX};
1504
1505 if (defined($config{api})) {
1506     $config{openssl_api_defines} = [ "OPENSSL_MIN_API=".$apitable->{$config{api}} ];
1507     my $apiflag = sprintf("OPENSSL_API_COMPAT=%s", $apitable->{$config{api}});
1508     push @{$config{defines}}, $apiflag;
1509 }
1510
1511 my %strict_warnings_collection=( CFLAGS => [], CXXFLAGS => []);
1512 if ($strict_warnings)
1513         {
1514         my $wopt;
1515         my $gccver = $predefined_C{__GNUC__} // -1;
1516         my $gxxver = $predefined_CXX{__GNUC__} // -1;
1517
1518         warn "WARNING --strict-warnings requires gcc[>=4] or gcc-alike"
1519             unless $gccver >= 4;
1520         warn "WARNING --strict-warnings requires g++[>=4] or g++-alike"
1521             unless $gxxver >= 4;
1522         foreach (qw(CFLAGS CXXFLAGS))
1523                 {
1524                 push @{$strict_warnings_collection{$_}},
1525                         @{$gcc_devteam_warn{$_}};
1526                 }
1527         push @{$strict_warnings_collection{CFLAGS}},
1528                 @{$clang_devteam_warn{CFLAGS}}
1529                         if (defined($predefined_C{__clang__}));
1530         push @{$strict_warnings_collection{CXXFLAGS}},
1531                 @{$clang_devteam_warn{CXXFLAGS}}
1532                         if (defined($predefined_CXX{__clang__}));
1533         }
1534
1535 if (grep { $_ eq '-static' } @{$config{LDFLAGS}}) {
1536     disable('static', 'pic', 'threads');
1537 }
1538
1539 foreach my $idx (qw(CFLAGS CXXFLAGS))
1540         {
1541         $config{$idx} = [ map { $_ eq '--ossl-strict-warnings'
1542                                     ? @{$strict_warnings_collection{$idx}}
1543                                 : ( $_ ) }
1544                           @{$config{$idx}} ];
1545         }
1546
1547 unless ($disabled{"crypto-mdebug-backtrace"})
1548         {
1549         foreach my $wopt (split /\s+/, $memleak_devteam_backtrace)
1550                 {
1551                 push @{$config{cflags}}, $wopt
1552                         unless grep { $_ eq $wopt } @{$config{cflags}};
1553                 push @{$config{cxxflags}}, $wopt
1554                         if ($config{CXX}
1555                             && !grep { $_ eq $wopt } @{$config{cxxflags}});
1556                 }
1557         if ($target =~ /^BSD-/)
1558                 {
1559                 push @{$config{ex_libs}}, "-lexecinfo";
1560                 }
1561         }
1562
1563 unless ($disabled{afalgeng}) {
1564     $config{afalgeng}="";
1565     if (grep { $_ eq 'afalgeng' } @{$target{enable}}) {
1566         my $minver = 4*10000 + 1*100 + 0;
1567         if ($config{CROSS_COMPILE} eq "") {
1568             my $verstr = `uname -r`;
1569             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
1570             ($mi2) = $mi2 =~ /(\d+)/;
1571             my $ver = $ma*10000 + $mi1*100 + $mi2;
1572             if ($ver < $minver) {
1573                 disable('too-old-kernel', 'afalgeng');
1574             } else {
1575                 push @{$config{engdirs}}, "afalg";
1576             }
1577         } else {
1578             disable('cross-compiling', 'afalgeng');
1579         }
1580     } else {
1581         disable('not-linux', 'afalgeng');
1582     }
1583 }
1584
1585 push @{$config{openssl_other_defines}}, "OPENSSL_NO_AFALGENG" if ($disabled{afalgeng});
1586
1587 # Get the extra flags used when building shared libraries and modules.  We
1588 # do this late because some of them depend on %disabled.
1589
1590 # Make the flags to build DSOs the same as for shared libraries unless they
1591 # are already defined
1592 $target{module_cflags} = $target{shared_cflag} unless defined $target{module_cflags};
1593 $target{module_cxxflags} = $target{shared_cxxflag} unless defined $target{module_cxxflags};
1594 $target{module_ldflags} = $target{shared_ldflag} unless defined $target{module_ldflags};
1595 {
1596     my $shared_info_pl =
1597         catfile(dirname($0), "Configurations", "shared-info.pl");
1598     my %shared_info = read_eval_file($shared_info_pl);
1599     push @{$target{_conf_fname_int}}, $shared_info_pl;
1600     my $si = $target{shared_target};
1601     while (ref $si ne "HASH") {
1602         last if ! defined $si;
1603         if (ref $si eq "CODE") {
1604             $si = $si->();
1605         } else {
1606             $si = $shared_info{$si};
1607         }
1608     }
1609
1610     # Some of the 'shared_target' values don't have any entries in
1611     # %shared_info.  That's perfectly fine, AS LONG AS the build file
1612     # template knows how to handle this.  That is currently the case for
1613     # Windows and VMS.
1614     if (defined $si) {
1615         # Just as above, copy certain shared_* attributes to the corresponding
1616         # module_ attribute unless the latter is already defined
1617         $si->{module_cflags} = $si->{shared_cflag} unless defined $si->{module_cflags};
1618         $si->{module_cxxflags} = $si->{shared_cxxflag} unless defined $si->{module_cxxflags};
1619         $si->{module_ldflags} = $si->{shared_ldflag} unless defined $si->{module_ldflags};
1620         foreach (sort keys %$si) {
1621             $target{$_} = defined $target{$_}
1622                 ? add($si->{$_})->($target{$_})
1623                 : $si->{$_};
1624         }
1625     }
1626 }
1627
1628 # ALL MODIFICATIONS TO %disabled, %config and %target MUST BE DONE FROM HERE ON
1629
1630 # If we use the unified build, collect information from build.info files
1631 my %unified_info = ();
1632
1633 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
1634 if ($builder eq "unified") {
1635     use with_fallback qw(Text::Template);
1636
1637     sub cleandir {
1638         my $base = shift;
1639         my $dir = shift;
1640         my $relativeto = shift || ".";
1641
1642         $dir = catdir($base,$dir) unless isabsolute($dir);
1643
1644         # Make sure the directories we're building in exists
1645         mkpath($dir);
1646
1647         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
1648         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
1649         return $res;
1650     }
1651
1652     sub cleanfile {
1653         my $base = shift;
1654         my $file = shift;
1655         my $relativeto = shift || ".";
1656
1657         $file = catfile($base,$file) unless isabsolute($file);
1658
1659         my $d = dirname($file);
1660         my $f = basename($file);
1661
1662         # Make sure the directories we're building in exists
1663         mkpath($d);
1664
1665         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
1666         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
1667         return $res;
1668     }
1669
1670     # Store the name of the template file we will build the build file from
1671     # in %config.  This may be useful for the build file itself.
1672     my @build_file_template_names =
1673         ( $builder_platform."-".$target{build_file}.".tmpl",
1674           $target{build_file}.".tmpl" );
1675     my @build_file_templates = ();
1676
1677     # First, look in the user provided directory, if given
1678     if (defined env($local_config_envname)) {
1679         @build_file_templates =
1680             map {
1681                 if ($^O eq 'VMS') {
1682                     # VMS environment variables are logical names,
1683                     # which can be used as is
1684                     $local_config_envname . ':' . $_;
1685                 } else {
1686                     catfile(env($local_config_envname), $_);
1687                 }
1688             }
1689             @build_file_template_names;
1690     }
1691     # Then, look in our standard directory
1692     push @build_file_templates,
1693         ( map { cleanfile($srcdir, catfile("Configurations", $_), $blddir) }
1694           @build_file_template_names );
1695
1696     my $build_file_template;
1697     for $_ (@build_file_templates) {
1698         $build_file_template = $_;
1699         last if -f $build_file_template;
1700
1701         $build_file_template = undef;
1702     }
1703     if (!defined $build_file_template) {
1704         die "*** Couldn't find any of:\n", join("\n", @build_file_templates), "\n";
1705     }
1706     $config{build_file_templates}
1707       = [ cleanfile($srcdir, catfile("Configurations", "common0.tmpl"),
1708                     $blddir),
1709           $build_file_template,
1710           cleanfile($srcdir, catfile("Configurations", "common.tmpl"),
1711                     $blddir) ];
1712
1713     my @build_infos = ( [ ".", "build.info" ] );
1714     foreach (@{$config{dirs}}) {
1715         push @build_infos, [ $_, "build.info" ]
1716             if (-f catfile($srcdir, $_, "build.info"));
1717     }
1718     foreach (@{$config{sdirs}}) {
1719         push @build_infos, [ catdir("crypto", $_), "build.info" ]
1720             if (-f catfile($srcdir, "crypto", $_, "build.info"));
1721     }
1722     foreach (@{$config{engdirs}}) {
1723         push @build_infos, [ catdir("engines", $_), "build.info" ]
1724             if (-f catfile($srcdir, "engines", $_, "build.info"));
1725     }
1726     foreach (@{$config{tdirs}}) {
1727         push @build_infos, [ catdir("test", $_), "build.info" ]
1728             if (-f catfile($srcdir, "test", $_, "build.info"));
1729     }
1730
1731     $config{build_infos} = [ ];
1732
1733     my %ordinals = ();
1734     foreach (@build_infos) {
1735         my $sourced = catdir($srcdir, $_->[0]);
1736         my $buildd = catdir($blddir, $_->[0]);
1737
1738         mkpath($buildd);
1739
1740         my $f = $_->[1];
1741         # The basic things we're trying to build
1742         my @programs = ();
1743         my @programs_install = ();
1744         my @libraries = ();
1745         my @libraries_install = ();
1746         my @engines = ();
1747         my @engines_install = ();
1748         my @scripts = ();
1749         my @scripts_install = ();
1750         my @extra = ();
1751         my @overrides = ();
1752         my @intermediates = ();
1753         my @rawlines = ();
1754
1755         my %sources = ();
1756         my %shared_sources = ();
1757         my %includes = ();
1758         my %depends = ();
1759         my %renames = ();
1760         my %sharednames = ();
1761         my %generate = ();
1762
1763         # We want to detect configdata.pm in the source tree, so we
1764         # don't use it if the build tree is different.
1765         my $src_configdata = cleanfile($srcdir, "configdata.pm", $blddir);
1766
1767         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
1768         my $template =
1769             Text::Template->new(TYPE => 'FILE',
1770                                 SOURCE => catfile($sourced, $f),
1771                                 PREPEND => qq{use lib "$FindBin::Bin/util/perl";});
1772         die "Something went wrong with $sourced/$f: $!\n" unless $template;
1773         my @text =
1774             split /^/m,
1775             $template->fill_in(HASH => { config => \%config,
1776                                          target => \%target,
1777                                          disabled => \%disabled,
1778                                          withargs => \%withargs,
1779                                          builddir => abs2rel($buildd, $blddir),
1780                                          sourcedir => abs2rel($sourced, $blddir),
1781                                          buildtop => abs2rel($blddir, $blddir),
1782                                          sourcetop => abs2rel($srcdir, $blddir) },
1783                                DELIMITERS => [ "{-", "-}" ]);
1784
1785         # The top item of this stack has the following values
1786         # -2 positive already run and we found ELSE (following ELSIF should fail)
1787         # -1 positive already run (skip until ENDIF)
1788         # 0 negatives so far (if we're at a condition, check it)
1789         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
1790         # 2 positive ELSE (following ELSIF should fail)
1791         my @skip = ();
1792         collect_information(
1793             collect_from_array([ @text ],
1794                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
1795                                                 $l1 =~ s/\\$//; $l1.$l2 }),
1796             # Info we're looking for
1797             qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
1798             => sub {
1799                 if (! @skip || $skip[$#skip] > 0) {
1800                     push @skip, !! $1;
1801                 } else {
1802                     push @skip, -1;
1803                 }
1804             },
1805             qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
1806             => sub { die "ELSIF out of scope" if ! @skip;
1807                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
1808                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
1809                      $skip[$#skip] = !! $1
1810                          if $skip[$#skip] == 0; },
1811             qr/^\s*ELSE\s*$/
1812             => sub { die "ELSE out of scope" if ! @skip;
1813                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
1814                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
1815             qr/^\s*ENDIF\s*$/
1816             => sub { die "ENDIF out of scope" if ! @skip;
1817                      pop @skip; },
1818             qr/^\s*PROGRAMS(_NO_INST)?\s*=\s*(.*)\s*$/
1819             => sub {
1820                 if (!@skip || $skip[$#skip] > 0) {
1821                     my $install = $1;
1822                     my @x = tokenize($2);
1823                     push @programs, @x;
1824                     push @programs_install, @x unless $install;
1825                 }
1826             },
1827             qr/^\s*LIBS(_NO_INST)?\s*=\s*(.*)\s*$/
1828             => sub {
1829                 if (!@skip || $skip[$#skip] > 0) {
1830                     my $install = $1;
1831                     my @x = tokenize($2);
1832                     push @libraries, @x;
1833                     push @libraries_install, @x unless $install;
1834                 }
1835             },
1836             qr/^\s*ENGINES(_NO_INST)?\s*=\s*(.*)\s*$/
1837             => sub {
1838                 if (!@skip || $skip[$#skip] > 0) {
1839                     my $install = $1;
1840                     my @x = tokenize($2);
1841                     push @engines, @x;
1842                     push @engines_install, @x unless $install;
1843                 }
1844             },
1845             qr/^\s*SCRIPTS(_NO_INST)?\s*=\s*(.*)\s*$/
1846             => sub {
1847                 if (!@skip || $skip[$#skip] > 0) {
1848                     my $install = $1;
1849                     my @x = tokenize($2);
1850                     push @scripts, @x;
1851                     push @scripts_install, @x unless $install;
1852                 }
1853             },
1854             qr/^\s*EXTRA\s*=\s*(.*)\s*$/
1855             => sub { push @extra, tokenize($1)
1856                          if !@skip || $skip[$#skip] > 0 },
1857             qr/^\s*OVERRIDES\s*=\s*(.*)\s*$/
1858             => sub { push @overrides, tokenize($1)
1859                          if !@skip || $skip[$#skip] > 0 },
1860
1861             qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
1862             => sub { push @{$ordinals{$1}}, tokenize($2)
1863                          if !@skip || $skip[$#skip] > 0 },
1864             qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1865             => sub { push @{$sources{$1}}, tokenize($2)
1866                          if !@skip || $skip[$#skip] > 0 },
1867             qr/^\s*SHARED_SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1868             => sub { push @{$shared_sources{$1}}, tokenize($2)
1869                          if !@skip || $skip[$#skip] > 0 },
1870             qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1871             => sub { push @{$includes{$1}}, tokenize($2)
1872                          if !@skip || $skip[$#skip] > 0 },
1873             qr/^\s*DEPEND\[((?:\\.|[^\\\]])*)\]\s*=\s*(.*)\s*$/
1874             => sub { push @{$depends{$1}}, tokenize($2)
1875                          if !@skip || $skip[$#skip] > 0 },
1876             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1877             => sub { push @{$generate{$1}}, $2
1878                          if !@skip || $skip[$#skip] > 0 },
1879             qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1880             => sub { push @{$renames{$1}}, tokenize($2)
1881                          if !@skip || $skip[$#skip] > 0 },
1882             qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1883             => sub { push @{$sharednames{$1}}, tokenize($2)
1884                          if !@skip || $skip[$#skip] > 0 },
1885             qr/^\s*BEGINRAW\[((?:\\.|[^\\\]])+)\]\s*$/
1886             => sub {
1887                 my $lineiterator = shift;
1888                 my $target_kind = $1;
1889                 while (defined $lineiterator->()) {
1890                     s|\R$||;
1891                     if (/^\s*ENDRAW\[((?:\\.|[^\\\]])+)\]\s*$/) {
1892                         die "ENDRAW doesn't match BEGINRAW"
1893                             if $1 ne $target_kind;
1894                         last;
1895                     }
1896                     next if @skip && $skip[$#skip] <= 0;
1897                     push @rawlines,  $_
1898                         if ($target_kind eq $target{build_file}
1899                             || $target_kind eq $target{build_file}."(".$builder_platform.")");
1900                 }
1901             },
1902             qr/^\s*(?:#.*)?$/ => sub { },
1903             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
1904             "BEFORE" => sub {
1905                 if ($buildinfo_debug) {
1906                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
1907                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1908                 }
1909             },
1910             "AFTER" => sub {
1911                 if ($buildinfo_debug) {
1912                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1913                 }
1914             },
1915             );
1916         die "runaway IF?" if (@skip);
1917
1918         foreach (keys %renames) {
1919             die "$_ renamed to more than one thing: "
1920                 ,join(" ", @{$renames{$_}}),"\n"
1921                 if scalar @{$renames{$_}} > 1;
1922             my $dest = cleanfile($buildd, $_, $blddir);
1923             my $to = cleanfile($buildd, $renames{$_}->[0], $blddir);
1924             die "$dest renamed to more than one thing: "
1925                 ,$unified_info{rename}->{$dest}, $to
1926                 unless !defined($unified_info{rename}->{$dest})
1927                 or $unified_info{rename}->{$dest} eq $to;
1928             $unified_info{rename}->{$dest} = $to;
1929         }
1930
1931         foreach (@programs) {
1932             my $program = cleanfile($buildd, $_, $blddir);
1933             if ($unified_info{rename}->{$program}) {
1934                 $program = $unified_info{rename}->{$program};
1935             }
1936             $unified_info{programs}->{$program} = 1;
1937         }
1938
1939         foreach (@programs_install) {
1940             my $program = cleanfile($buildd, $_, $blddir);
1941             if ($unified_info{rename}->{$program}) {
1942                 $program = $unified_info{rename}->{$program};
1943             }
1944             $unified_info{install}->{programs}->{$program} = 1;
1945         }
1946
1947         foreach (@libraries) {
1948             my $library = cleanfile($buildd, $_, $blddir);
1949             if ($unified_info{rename}->{$library}) {
1950                 $library = $unified_info{rename}->{$library};
1951             }
1952             $unified_info{libraries}->{$library} = 1;
1953         }
1954
1955         foreach (@libraries_install) {
1956             my $library = cleanfile($buildd, $_, $blddir);
1957             if ($unified_info{rename}->{$library}) {
1958                 $library = $unified_info{rename}->{$library};
1959             }
1960             $unified_info{install}->{libraries}->{$library} = 1;
1961         }
1962
1963         die <<"EOF" if scalar @engines and !$config{dynamic_engines};
1964 ENGINES can only be used if configured with 'dynamic-engine'.
1965 This is usually a fault in a build.info file.
1966 EOF
1967         foreach (@engines) {
1968             my $library = cleanfile($buildd, $_, $blddir);
1969             if ($unified_info{rename}->{$library}) {
1970                 $library = $unified_info{rename}->{$library};
1971             }
1972             $unified_info{engines}->{$library} = 1;
1973         }
1974
1975         foreach (@engines_install) {
1976             my $library = cleanfile($buildd, $_, $blddir);
1977             if ($unified_info{rename}->{$library}) {
1978                 $library = $unified_info{rename}->{$library};
1979             }
1980             $unified_info{install}->{engines}->{$library} = 1;
1981         }
1982
1983         foreach (@scripts) {
1984             my $script = cleanfile($buildd, $_, $blddir);
1985             if ($unified_info{rename}->{$script}) {
1986                 $script = $unified_info{rename}->{$script};
1987             }
1988             $unified_info{scripts}->{$script} = 1;
1989         }
1990
1991         foreach (@scripts_install) {
1992             my $script = cleanfile($buildd, $_, $blddir);
1993             if ($unified_info{rename}->{$script}) {
1994                 $script = $unified_info{rename}->{$script};
1995             }
1996             $unified_info{install}->{scripts}->{$script} = 1;
1997         }
1998
1999         foreach (@extra) {
2000             my $extra = cleanfile($buildd, $_, $blddir);
2001             $unified_info{extra}->{$extra} = 1;
2002         }
2003
2004         foreach (@overrides) {
2005             my $override = cleanfile($buildd, $_, $blddir);
2006             $unified_info{overrides}->{$override} = 1;
2007         }
2008
2009         push @{$unified_info{rawlines}}, @rawlines;
2010
2011         unless ($disabled{shared}) {
2012             # Check sharednames.
2013             foreach (keys %sharednames) {
2014                 my $dest = cleanfile($buildd, $_, $blddir);
2015                 if ($unified_info{rename}->{$dest}) {
2016                     $dest = $unified_info{rename}->{$dest};
2017                 }
2018                 die "shared_name for $dest with multiple values: "
2019                     ,join(" ", @{$sharednames{$_}}),"\n"
2020                     if scalar @{$sharednames{$_}} > 1;
2021                 my $to = cleanfile($buildd, $sharednames{$_}->[0], $blddir);
2022                 die "shared_name found for a library $dest that isn't defined\n"
2023                     unless $unified_info{libraries}->{$dest};
2024                 die "shared_name for $dest with multiple values: "
2025                     ,$unified_info{sharednames}->{$dest}, ", ", $to
2026                     unless !defined($unified_info{sharednames}->{$dest})
2027                     or $unified_info{sharednames}->{$dest} eq $to;
2028                 $unified_info{sharednames}->{$dest} = $to;
2029             }
2030
2031             # Additionally, we set up sharednames for libraries that don't
2032             # have any, as themselves.  Only for libraries that aren't
2033             # explicitly static.
2034             foreach (grep !/\.a$/, keys %{$unified_info{libraries}}) {
2035                 if (!defined $unified_info{sharednames}->{$_}) {
2036                     $unified_info{sharednames}->{$_} = $_
2037                 }
2038             }
2039
2040             # Check that we haven't defined any library as both shared and
2041             # explicitly static.  That is forbidden.
2042             my @doubles = ();
2043             foreach (grep /\.a$/, keys %{$unified_info{libraries}}) {
2044                 (my $l = $_) =~ s/\.a$//;
2045                 push @doubles, $l if defined $unified_info{sharednames}->{$l};
2046             }
2047             die "these libraries are both explicitly static and shared:\n  ",
2048                 join(" ", @doubles), "\n"
2049                 if @doubles;
2050         }
2051
2052         foreach (keys %sources) {
2053             my $dest = $_;
2054             my $ddest = cleanfile($buildd, $_, $blddir);
2055             if ($unified_info{rename}->{$ddest}) {
2056                 $ddest = $unified_info{rename}->{$ddest};
2057             }
2058             foreach (@{$sources{$dest}}) {
2059                 my $s = cleanfile($sourced, $_, $blddir);
2060
2061                 # If it isn't in the source tree, we assume it's generated
2062                 # in the build tree
2063                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
2064                     $s = cleanfile($buildd, $_, $blddir);
2065                 }
2066                 # We recognise C++, C and asm files
2067                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2068                     my $o = $_;
2069                     $o =~ s/\.[csS]$/.o/; # C and assembler
2070                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2071                     $o = cleanfile($buildd, $o, $blddir);
2072                     $unified_info{sources}->{$ddest}->{$o} = 1;
2073                     $unified_info{sources}->{$o}->{$s} = 1;
2074                 } elsif ($s =~ /\.rc$/) {
2075                     # We also recognise resource files
2076                     my $o = $_;
2077                     $o =~ s/\.rc$/.res/; # Resource configuration
2078                     my $o = cleanfile($buildd, $o, $blddir);
2079                     $unified_info{sources}->{$ddest}->{$o} = 1;
2080                     $unified_info{sources}->{$o}->{$s} = 1;
2081                 } else {
2082                     $unified_info{sources}->{$ddest}->{$s} = 1;
2083                 }
2084             }
2085         }
2086
2087         foreach (keys %shared_sources) {
2088             my $dest = $_;
2089             my $ddest = cleanfile($buildd, $_, $blddir);
2090             if ($unified_info{rename}->{$ddest}) {
2091                 $ddest = $unified_info{rename}->{$ddest};
2092             }
2093             foreach (@{$shared_sources{$dest}}) {
2094                 my $s = cleanfile($sourced, $_, $blddir);
2095
2096                 # If it isn't in the source tree, we assume it's generated
2097                 # in the build tree
2098                 if ($s eq $src_configdata || ! -f $s || $generate{$_}) {
2099                     $s = cleanfile($buildd, $_, $blddir);
2100                 }
2101
2102                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
2103                     # We recognise C++, C and asm files
2104                     my $o = $_;
2105                     $o =~ s/\.[csS]$/.o/; # C and assembler
2106                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
2107                     $o = cleanfile($buildd, $o, $blddir);
2108                     $unified_info{shared_sources}->{$ddest}->{$o} = 1;
2109                     $unified_info{sources}->{$o}->{$s} = 1;
2110                 } elsif ($s =~ /\.rc$/) {
2111                     # We also recognise resource files
2112                     my $o = $_;
2113                     $o =~ s/\.rc$/.res/; # Resource configuration
2114                     my $o = cleanfile($buildd, $o, $blddir);
2115                     $unified_info{shared_sources}->{$ddest}->{$o} = 1;
2116                     $unified_info{sources}->{$o}->{$s} = 1;
2117                 } elsif ($s =~ /\.(def|map|opt)$/) {
2118                     # We also recognise .def / .map / .opt files
2119                     # We know they are generated files
2120                     my $def = cleanfile($buildd, $s, $blddir);
2121                     $unified_info{shared_sources}->{$ddest}->{$def} = 1;
2122                 } else {
2123                     die "unrecognised source file type for shared library: $s\n";
2124                 }
2125             }
2126         }
2127
2128         foreach (keys %generate) {
2129             my $dest = $_;
2130             my $ddest = cleanfile($buildd, $_, $blddir);
2131             if ($unified_info{rename}->{$ddest}) {
2132                 $ddest = $unified_info{rename}->{$ddest};
2133             }
2134             die "more than one generator for $dest: "
2135                     ,join(" ", @{$generate{$_}}),"\n"
2136                     if scalar @{$generate{$_}} > 1;
2137             my @generator = split /\s+/, $generate{$dest}->[0];
2138             $generator[0] = cleanfile($sourced, $generator[0], $blddir),
2139             $unified_info{generate}->{$ddest} = [ @generator ];
2140         }
2141
2142         foreach (keys %depends) {
2143             my $dest = $_;
2144             my $ddest = $dest eq "" ? "" : cleanfile($sourced, $_, $blddir);
2145
2146             # If the destination doesn't exist in source, it can only be
2147             # a generated file in the build tree.
2148             if ($ddest ne "" && ($ddest eq $src_configdata || ! -f $ddest)) {
2149                 $ddest = cleanfile($buildd, $_, $blddir);
2150                 if ($unified_info{rename}->{$ddest}) {
2151                     $ddest = $unified_info{rename}->{$ddest};
2152                 }
2153             }
2154             foreach (@{$depends{$dest}}) {
2155                 my $d = cleanfile($sourced, $_, $blddir);
2156
2157                 # If we know it's generated, or assume it is because we can't
2158                 # find it in the source tree, we set file we depend on to be
2159                 # in the build tree rather than the source tree, and assume
2160                 # and that there are lines to build it in a BEGINRAW..ENDRAW
2161                 # section or in the Makefile template.
2162                 if ($d eq $src_configdata
2163                     || ! -f $d
2164                     || (grep { $d eq $_ }
2165                         map { cleanfile($srcdir, $_, $blddir) }
2166                         grep { /\.h$/ } keys %{$unified_info{generate}})) {
2167                     $d = cleanfile($buildd, $_, $blddir);
2168                 }
2169                 # Take note if the file to depend on is being renamed
2170                 # Take extra care with files ending with .a, they should
2171                 # be treated without that extension, and the extension
2172                 # should be added back after treatment.
2173                 $d =~ /(\.a)?$/;
2174                 my $e = $1 // "";
2175                 $d = $`;
2176                 if ($unified_info{rename}->{$d}) {
2177                     $d = $unified_info{rename}->{$d};
2178                 }
2179                 $d .= $e;
2180                 $unified_info{depends}->{$ddest}->{$d} = 1;
2181             }
2182         }
2183
2184         foreach (keys %includes) {
2185             my $dest = $_;
2186             my $ddest = cleanfile($sourced, $_, $blddir);
2187
2188             # If the destination doesn't exist in source, it can only be
2189             # a generated file in the build tree.
2190             if ($ddest eq $src_configdata || ! -f $ddest) {
2191                 $ddest = cleanfile($buildd, $_, $blddir);
2192                 if ($unified_info{rename}->{$ddest}) {
2193                     $ddest = $unified_info{rename}->{$ddest};
2194                 }
2195             }
2196             foreach (@{$includes{$dest}}) {
2197                 my $is = cleandir($sourced, $_, $blddir);
2198                 my $ib = cleandir($buildd, $_, $blddir);
2199                 push @{$unified_info{includes}->{$ddest}->{source}}, $is
2200                     unless grep { $_ eq $is } @{$unified_info{includes}->{$ddest}->{source}};
2201                 push @{$unified_info{includes}->{$ddest}->{build}}, $ib
2202                     unless grep { $_ eq $ib } @{$unified_info{includes}->{$ddest}->{build}};
2203             }
2204         }
2205     }
2206
2207     my $ordinals_text = join(', ', sort keys %ordinals);
2208     warn <<"EOF" if $ordinals_text;
2209
2210 WARNING: ORDINALS were specified for $ordinals_text
2211 They are ignored and should be replaced with a combination of GENERATE,
2212 DEPEND and SHARED_SOURCE.
2213 EOF
2214
2215     # Massage the result
2216
2217     # If the user configured no-shared, we allow no shared sources
2218     if ($disabled{shared}) {
2219         foreach (keys %{$unified_info{shared_sources}}) {
2220             foreach (keys %{$unified_info{shared_sources}->{$_}}) {
2221                 delete $unified_info{sources}->{$_};
2222             }
2223         }
2224         $unified_info{shared_sources} = {};
2225     }
2226
2227     # If we depend on a header file or a perl module, add an inclusion of
2228     # its directory to allow smoothe inclusion
2229     foreach my $dest (keys %{$unified_info{depends}}) {
2230         next if $dest eq "";
2231         foreach my $d (keys %{$unified_info{depends}->{$dest}}) {
2232             next unless $d =~ /\.(h|pm)$/;
2233             my $i = dirname($d);
2234             my $spot =
2235                 $d eq "configdata.pm" || defined($unified_info{generate}->{$d})
2236                 ? 'build' : 'source';
2237             push @{$unified_info{includes}->{$dest}->{$spot}}, $i
2238                 unless grep { $_ eq $i } @{$unified_info{includes}->{$dest}->{$spot}};
2239         }
2240     }
2241
2242     # Trickle down includes placed on libraries, engines and programs to
2243     # their sources (i.e. object files)
2244     foreach my $dest (keys %{$unified_info{engines}},
2245                       keys %{$unified_info{libraries}},
2246                       keys %{$unified_info{programs}}) {
2247         foreach my $k (("source", "build")) {
2248             next unless defined($unified_info{includes}->{$dest}->{$k});
2249             my @incs = reverse @{$unified_info{includes}->{$dest}->{$k}};
2250             foreach my $obj (grep /\.o$/,
2251                              (keys %{$unified_info{sources}->{$dest} // {}},
2252                               keys %{$unified_info{shared_sources}->{$dest} // {}})) {
2253                 foreach my $inc (@incs) {
2254                     unshift @{$unified_info{includes}->{$obj}->{$k}}, $inc
2255                         unless grep { $_ eq $inc } @{$unified_info{includes}->{$obj}->{$k}};
2256                 }
2257             }
2258         }
2259         delete $unified_info{includes}->{$dest};
2260     }
2261
2262     ### Make unified_info a bit more efficient
2263     # One level structures
2264     foreach (("programs", "libraries", "engines", "scripts", "extra", "overrides")) {
2265         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
2266     }
2267     # Two level structures
2268     foreach my $l1 (("install", "sources", "shared_sources", "ldadd", "depends")) {
2269         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
2270             $unified_info{$l1}->{$l2} =
2271                 [ sort keys %{$unified_info{$l1}->{$l2}} ];
2272         }
2273     }
2274     # Includes
2275     foreach my $dest (sort keys %{$unified_info{includes}}) {
2276         if (defined($unified_info{includes}->{$dest}->{build})) {
2277             my @source_includes = ();
2278             @source_includes = ( @{$unified_info{includes}->{$dest}->{source}} )
2279                 if defined($unified_info{includes}->{$dest}->{source});
2280             $unified_info{includes}->{$dest} =
2281                 [ @{$unified_info{includes}->{$dest}->{build}} ];
2282             foreach my $inc (@source_includes) {
2283                 push @{$unified_info{includes}->{$dest}}, $inc
2284                     unless grep { $_ eq $inc } @{$unified_info{includes}->{$dest}};
2285             }
2286         } else {
2287             $unified_info{includes}->{$dest} =
2288                 [ @{$unified_info{includes}->{$dest}->{source}} ];
2289         }
2290     }
2291
2292     # For convenience collect information regarding directories where
2293     # files are generated, those generated files and the end product
2294     # they end up in where applicable.  Then, add build rules for those
2295     # directories
2296     my %loopinfo = ( "lib" => [ @{$unified_info{libraries}} ],
2297                      "dso" => [ @{$unified_info{engines}} ],
2298                      "bin" => [ @{$unified_info{programs}} ],
2299                      "script" => [ @{$unified_info{scripts}} ] );
2300     foreach my $type (keys %loopinfo) {
2301         foreach my $product (@{$loopinfo{$type}}) {
2302             my %dirs = ();
2303             my $pd = dirname($product);
2304
2305             foreach (@{$unified_info{sources}->{$product} // []},
2306                      @{$unified_info{shared_sources}->{$product} // []}) {
2307                 my $d = dirname($_);
2308
2309                 # We don't want to create targets for source directories
2310                 # when building out of source
2311                 next if ($config{sourcedir} ne $config{builddir}
2312                              && $d =~ m|^\Q$config{sourcedir}\E|);
2313                 # We already have a "test" target, and the current directory
2314                 # is just silly to make a target for
2315                 next if $d eq "test" || $d eq ".";
2316
2317                 $dirs{$d} = 1;
2318                 push @{$unified_info{dirinfo}->{$d}->{deps}}, $_
2319                     if $d ne $pd;
2320             }
2321             foreach (keys %dirs) {
2322                 push @{$unified_info{dirinfo}->{$_}->{products}->{$type}},
2323                     $product;
2324             }
2325         }
2326     }
2327 }
2328
2329 # For the schemes that need it, we provide the old *_obj configs
2330 # from the *_asm_obj ones
2331 foreach (grep /_(asm|aux)_src$/, keys %target) {
2332     my $src = $_;
2333     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
2334     $target{$obj} = $target{$src};
2335     $target{$obj} =~ s/\.[csS]\b/.o/g; # C and assembler
2336     $target{$obj} =~ s/\.(cc|cpp)\b/_cc.o/g; # C++
2337 }
2338
2339 # Write down our configuration where it fits #########################
2340
2341 print "Creating configdata.pm\n";
2342 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
2343 print OUT <<"EOF";
2344 #! $config{HASHBANGPERL}
2345
2346 package configdata;
2347
2348 use strict;
2349 use warnings;
2350
2351 use Exporter;
2352 #use vars qw(\@ISA \@EXPORT);
2353 our \@ISA = qw(Exporter);
2354 our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables);
2355
2356 EOF
2357 print OUT "our %config = (\n";
2358 foreach (sort keys %config) {
2359     if (ref($config{$_}) eq "ARRAY") {
2360         print OUT "  ", $_, " => [ ", join(", ",
2361                                            map { quotify("perl", $_) }
2362                                            @{$config{$_}}), " ],\n";
2363     } elsif (ref($config{$_}) eq "HASH") {
2364         print OUT "  ", $_, " => {";
2365         if (scalar keys %{$config{$_}} > 0) {
2366             print OUT "\n";
2367             foreach my $key (sort keys %{$config{$_}}) {
2368                 print OUT "      ",
2369                     join(" => ",
2370                          quotify("perl", $key),
2371                          defined $config{$_}->{$key}
2372                              ? quotify("perl", $config{$_}->{$key})
2373                              : "undef");
2374                 print OUT ",\n";
2375             }
2376             print OUT "  ";
2377         }
2378         print OUT "},\n";
2379     } else {
2380         print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
2381     }
2382 }
2383 print OUT <<"EOF";
2384 );
2385
2386 EOF
2387 print OUT "our %target = (\n";
2388 foreach (sort keys %target) {
2389     if (ref($target{$_}) eq "ARRAY") {
2390         print OUT "  ", $_, " => [ ", join(", ",
2391                                            map { quotify("perl", $_) }
2392                                            @{$target{$_}}), " ],\n";
2393     } else {
2394         print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
2395     }
2396 }
2397 print OUT <<"EOF";
2398 );
2399
2400 EOF
2401 print OUT "our \%available_protocols = (\n";
2402 print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
2403 print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
2404 print OUT <<"EOF";
2405 );
2406
2407 EOF
2408 print OUT "our \@disablables = (\n";
2409 foreach (@disablables) {
2410     print OUT "  ", quotify("perl", $_), ",\n";
2411 }
2412 print OUT <<"EOF";
2413 );
2414
2415 EOF
2416 print OUT "our \%disabled = (\n";
2417 foreach (sort keys %disabled) {
2418     print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
2419 }
2420 print OUT <<"EOF";
2421 );
2422
2423 EOF
2424 print OUT "our %withargs = (\n";
2425 foreach (sort keys %withargs) {
2426     if (ref($withargs{$_}) eq "ARRAY") {
2427         print OUT "  ", $_, " => [ ", join(", ",
2428                                            map { quotify("perl", $_) }
2429                                            @{$withargs{$_}}), " ],\n";
2430     } else {
2431         print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
2432     }
2433 }
2434 print OUT <<"EOF";
2435 );
2436
2437 EOF
2438 if ($builder eq "unified") {
2439     my $recurse;
2440     $recurse = sub {
2441         my $indent = shift;
2442         foreach (@_) {
2443             if (ref $_ eq "ARRAY") {
2444                 print OUT " "x$indent, "[\n";
2445                 foreach (@$_) {
2446                     $recurse->($indent + 4, $_);
2447                 }
2448                 print OUT " "x$indent, "],\n";
2449             } elsif (ref $_ eq "HASH") {
2450                 my %h = %$_;
2451                 print OUT " "x$indent, "{\n";
2452                 foreach (sort keys %h) {
2453                     if (ref $h{$_} eq "") {
2454                         print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
2455                     } else {
2456                         print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
2457                         $recurse->($indent + 8, $h{$_});
2458                     }
2459                 }
2460                 print OUT " "x$indent, "},\n";
2461             } else {
2462                 print OUT " "x$indent, quotify("perl", $_), ",\n";
2463             }
2464         }
2465     };
2466     print OUT "our %unified_info = (\n";
2467     foreach (sort keys %unified_info) {
2468         if (ref $unified_info{$_} eq "") {
2469             print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
2470         } else {
2471             print OUT " "x4, quotify("perl", $_), " =>\n";
2472             $recurse->(8, $unified_info{$_});
2473         }
2474     }
2475     print OUT <<"EOF";
2476 );
2477
2478 EOF
2479 }
2480 print OUT
2481     "# The following data is only used when this files is use as a script\n";
2482 print OUT "my \@makevars = (\n";
2483 foreach (sort keys %user) {
2484     print OUT "    '",$_,"',\n";
2485 }
2486 print OUT ");\n";
2487 print OUT "my \%disabled_info = (\n";
2488 foreach my $what (sort keys %disabled_info) {
2489     print OUT "    '$what' => {\n";
2490     foreach my $info (sort keys %{$disabled_info{$what}}) {
2491         if (ref $disabled_info{$what}->{$info} eq 'ARRAY') {
2492             print OUT "        $info => [ ",
2493                 join(', ', map { "'$_'" } @{$disabled_info{$what}->{$info}}),
2494                 " ],\n";
2495         } else {
2496             print OUT "        $info => '", $disabled_info{$what}->{$info},
2497                 "',\n";
2498         }
2499     }
2500     print OUT "    },\n";
2501 }
2502 print OUT ");\n";
2503 print OUT 'my @user_crossable = qw( ', join (' ', @user_crossable), " );\n";
2504 print OUT << 'EOF';
2505 # If run directly, we can give some answers, and even reconfigure
2506 unless (caller) {
2507     use Getopt::Long;
2508     use File::Spec::Functions;
2509     use File::Basename;
2510     use Pod::Usage;
2511
2512     my $here = dirname($0);
2513
2514     my $dump = undef;
2515     my $cmdline = undef;
2516     my $options = undef;
2517     my $target = undef;
2518     my $envvars = undef;
2519     my $makevars = undef;
2520     my $buildparams = undef;
2521     my $reconf = undef;
2522     my $verbose = undef;
2523     my $help = undef;
2524     my $man = undef;
2525     GetOptions('dump|d'                 => \$dump,
2526                'command-line|c'         => \$cmdline,
2527                'options|o'              => \$options,
2528                'target|t'               => \$target,
2529                'environment|e'          => \$envvars,
2530                'make-variables|m'       => \$makevars,
2531                'build-parameters|b'     => \$buildparams,
2532                'reconfigure|reconf|r'   => \$reconf,
2533                'verbose|v'              => \$verbose,
2534                'help'                   => \$help,
2535                'man'                    => \$man)
2536         or die "Errors in command line arguments\n";
2537
2538     unless ($dump || $cmdline || $options || $target || $envvars || $makevars
2539             || $buildparams || $reconf || $verbose || $help || $man) {
2540         print STDERR <<"_____";
2541 You must give at least one option.
2542 For more information, do '$0 --help'
2543 _____
2544         exit(2);
2545     }
2546
2547     if ($help) {
2548         pod2usage(-exitval => 0,
2549                   -verbose => 1);
2550     }
2551     if ($man) {
2552         pod2usage(-exitval => 0,
2553                   -verbose => 2);
2554     }
2555     if ($dump || $cmdline) {
2556         print "\nCommand line (with current working directory = $here):\n\n";
2557         print '    ',join(' ',
2558                           $config{PERL},
2559                           catfile($config{sourcedir}, 'Configure'),
2560                           @{$config{perlargv}}), "\n";
2561         print "\nPerl information:\n\n";
2562         print '    ',$config{perl_cmd},"\n";
2563         print '    ',$config{perl_version},' for ',$config{perl_archname},"\n";
2564     }
2565     if ($dump || $options) {
2566         my $longest = 0;
2567         my $longest2 = 0;
2568         foreach my $what (@disablables) {
2569             $longest = length($what) if $longest < length($what);
2570             $longest2 = length($disabled{$what})
2571                 if $disabled{$what} && $longest2 < length($disabled{$what});
2572         }
2573         print "\nEnabled features:\n\n";
2574         foreach my $what (@disablables) {
2575             print "    $what\n" unless $disabled{$what};
2576         }
2577         print "\nDisabled features:\n\n";
2578         foreach my $what (@disablables) {
2579             if ($disabled{$what}) {
2580                 print "    $what", ' ' x ($longest - length($what) + 1),
2581                     "[$disabled{$what}]", ' ' x ($longest2 - length($disabled{$what}) + 1);
2582                 print $disabled_info{$what}->{macro}
2583                     if $disabled_info{$what}->{macro};
2584                 print ' (skip ',
2585                     join(', ', @{$disabled_info{$what}->{skipped}}),
2586                     ')'
2587                     if $disabled_info{$what}->{skipped};
2588                 print "\n";
2589             }
2590         }
2591     }
2592     if ($dump || $target) {
2593         print "\nConfig target attributes:\n\n";
2594         foreach (sort keys %target) {
2595             next if $_ =~ m|^_| || $_ eq 'template';
2596             my $quotify = sub {
2597                 map { (my $x = $_) =~ s|([\\\$\@"])|\\$1|g; "\"$x\""} @_;
2598             };
2599             print '    ', $_, ' => ';
2600             if (ref($target{$_}) eq "ARRAY") {
2601                 print '[ ', join(', ', $quotify->(@{$target{$_}})), " ],\n";
2602             } else {
2603                 print $quotify->($target{$_}), ",\n"
2604             }
2605         }
2606     }
2607     if ($dump || $envvars) {
2608         print "\nRecorded environment:\n\n";
2609         foreach (sort keys %{$config{perlenv}}) {
2610             print '    ',$_,' = ',($config{perlenv}->{$_} || ''),"\n";
2611         }
2612     }
2613     if ($dump || $makevars) {
2614         print "\nMakevars:\n\n";
2615         foreach my $var (@makevars) {
2616             my $prefix = '';
2617             $prefix = $config{CROSS_COMPILE}
2618                 if grep { $var eq $_ } @user_crossable;
2619             $prefix //= '';
2620             print '    ',$var,' ' x (16 - length $var),'= ',
2621                 (ref $config{$var} eq 'ARRAY'
2622                  ? join(' ', @{$config{$var}})
2623                  : $prefix.$config{$var}),
2624                 "\n"
2625                 if defined $config{$var};
2626         }
2627
2628         my @buildfile = ($config{builddir}, $config{build_file});
2629         unshift @buildfile, $here
2630             unless file_name_is_absolute($config{builddir});
2631         my $buildfile = canonpath(catdir(@buildfile));
2632         print <<"_____";
2633
2634 NOTE: These variables only represent the configuration view.  The build file
2635 template may have processed these variables further, please have a look at the
2636 build file for more exact data:
2637     $buildfile
2638 _____
2639     }
2640     if ($dump || $buildparams) {
2641         my @buildfile = ($config{builddir}, $config{build_file});
2642         unshift @buildfile, $here
2643             unless file_name_is_absolute($config{builddir});
2644         print "\nbuild file:\n\n";
2645         print "    ", canonpath(catfile(@buildfile)),"\n";
2646
2647         print "\nbuild file templates:\n\n";
2648         foreach (@{$config{build_file_templates}}) {
2649             my @tmpl = ($_);
2650             unshift @tmpl, $here
2651                 unless file_name_is_absolute($config{sourcedir});
2652             print '    ',canonpath(catfile(@tmpl)),"\n";
2653         }
2654     }
2655     if ($reconf) {
2656         if ($verbose) {
2657             print 'Reconfiguring with: ', join(' ',@{$config{perlargv}}), "\n";
2658             foreach (sort keys %{$config{perlenv}}) {
2659                 print '    ',$_,' = ',($config{perlenv}->{$_} || ""),"\n";
2660             }
2661         }
2662
2663         chdir $here;
2664         exec $^X,catfile($config{sourcedir}, 'Configure'),'reconf';
2665     }
2666 }
2667
2668 1;
2669
2670 __END__
2671
2672 =head1 NAME
2673
2674 configdata.pm - configuration data for OpenSSL builds
2675
2676 =head1 SYNOPSIS
2677
2678 Interactive:
2679
2680   perl configdata.pm [options]
2681
2682 As data bank module:
2683
2684   use configdata;
2685
2686 =head1 DESCRIPTION
2687
2688 This module can be used in two modes, interactively and as a module containing
2689 all the data recorded by OpenSSL's Configure script.
2690
2691 When used interactively, simply run it as any perl script, with at least one
2692 option, and you will get the information you ask for.  See L</OPTIONS> below.
2693
2694 When loaded as a module, you get a few databanks with useful information to
2695 perform build related tasks.  The databanks are:
2696
2697     %config             Configured things.
2698     %target             The OpenSSL config target with all inheritances
2699                         resolved.
2700     %disabled           The features that are disabled.
2701     @disablables        The list of features that can be disabled.
2702     %withargs           All data given through --with-THING options.
2703     %unified_info       All information that was computed from the build.info
2704                         files.
2705
2706 =head1 OPTIONS
2707
2708 =over 4
2709
2710 =item B<--help>
2711
2712 Print a brief help message and exit.
2713
2714 =item B<--man>
2715
2716 Print the manual page and exit.
2717
2718 =item B<--dump> | B<-d>
2719
2720 Print all relevant configuration data.  This is equivalent to B<--command-line>
2721 B<--options> B<--target> B<--environment> B<--make-variables>
2722 B<--build-parameters>.
2723
2724 =item B<--command-line> | B<-c>
2725
2726 Print the current configuration command line.
2727
2728 =item B<--options> | B<-o>
2729
2730 Print the features, both enabled and disabled, and display defined macro and
2731 skipped directories where applicable.
2732
2733 =item B<--target> | B<-t>
2734
2735 Print the config attributes for this config target.
2736
2737 =item B<--environment> | B<-e>
2738
2739 Print the environment variables and their values at the time of configuration.
2740
2741 =item B<--make-variables> | B<-m>
2742
2743 Print the main make variables generated in the current configuration
2744
2745 =item B<--build-parameters> | B<-b>
2746
2747 Print the build parameters, i.e. build file and build file templates.
2748
2749 =item B<--reconfigure> | B<--reconf> | B<-r>
2750
2751 Redo the configuration.
2752
2753 =item B<--verbose> | B<-v>
2754
2755 Verbose output.
2756
2757 =back
2758
2759 =cut
2760
2761 EOF
2762 close(OUT);
2763 if ($builder_platform eq 'unix') {
2764     my $mode = (0755 & ~umask);
2765     chmod $mode, 'configdata.pm'
2766         or warn sprintf("WARNING: Couldn't change mode for 'configdata.pm' to 0%03o: %s\n",$mode,$!);
2767 }
2768
2769 my %builders = (
2770     unified => sub {
2771         print 'Creating ',$target{build_file},"\n";
2772         run_dofile(catfile($blddir, $target{build_file}),
2773                    @{$config{build_file_templates}});
2774     },
2775     );
2776
2777 $builders{$builder}->($builder_platform, @builder_opts);
2778
2779 $SIG{__DIE__} = $orig_death_handler;
2780
2781 print <<"EOF" if ($disabled{threads} eq "unavailable");
2782
2783 The library could not be configured for supporting multi-threaded
2784 applications as the compiler options required on this system are not known.
2785 See file INSTALL for details if you need multi-threading.
2786 EOF
2787
2788 print <<"EOF" if ($no_shared_warn);
2789
2790 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
2791 platform, so we will pretend you gave the option 'no-pic', which also disables
2792 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
2793 or position independent code, please let us know (but please first make sure
2794 you have tried with a current version of OpenSSL).
2795 EOF
2796
2797 print <<"EOF";
2798
2799 **********************************************************************
2800 ***                                                                ***
2801 ***   OpenSSL has been successfully configured                     ***
2802 ***                                                                ***
2803 ***   If you encounter a problem while building, please open an    ***
2804 ***   issue on GitHub <https://github.com/openssl/openssl/issues>  ***
2805 ***   and include the output from the following command:           ***
2806 ***                                                                ***
2807 ***       perl configdata.pm --dump                                ***
2808 ***                                                                ***
2809 ***   (If you are new to OpenSSL, you might want to consult the    ***
2810 ***   'Troubleshooting' section in the INSTALL file first)         ***
2811 ***                                                                ***
2812 **********************************************************************
2813 EOF
2814
2815 exit(0);
2816
2817 ######################################################################
2818 #
2819 # Helpers and utility functions
2820 #
2821
2822 # Death handler, to print a helpful message in case of failure #######
2823 #
2824 sub death_handler {
2825     die @_ if $^S;              # To prevent the added message in eval blocks
2826     my $build_file = $target{build_file} // "build file";
2827     my @message = ( <<"_____", @_ );
2828
2829 Failure!  $build_file wasn't produced.
2830 Please read INSTALL and associated NOTES files.  You may also have to look over
2831 your available compiler tool chain or change your configuration.
2832
2833 _____
2834
2835     # Dying is terminal, so it's ok to reset the signal handler here.
2836     $SIG{__DIE__} = $orig_death_handler;
2837     die @message;
2838 }
2839
2840 # Configuration file reading #########################################
2841
2842 # Note: All of the helper functions are for lazy evaluation.  They all
2843 # return a CODE ref, which will return the intended value when evaluated.
2844 # Thus, whenever there's mention of a returned value, it's about that
2845 # intended value.
2846
2847 # Helper function to implement conditional inheritance depending on the
2848 # value of $disabled{asm}.  Used in inherit_from values as follows:
2849 #
2850 #      inherit_from => [ "template", asm("asm_tmpl") ]
2851 #
2852 sub asm {
2853     my @x = @_;
2854     sub {
2855         $disabled{asm} ? () : @x;
2856     }
2857 }
2858
2859 # Helper function to implement conditional value variants, with a default
2860 # plus additional values based on the value of $config{build_type}.
2861 # Arguments are given in hash table form:
2862 #
2863 #       picker(default => "Basic string: ",
2864 #              debug   => "debug",
2865 #              release => "release")
2866 #
2867 # When configuring with --debug, the resulting string will be
2868 # "Basic string: debug", and when not, it will be "Basic string: release"
2869 #
2870 # This can be used to create variants of sets of flags according to the
2871 # build type:
2872 #
2873 #       cflags => picker(default => "-Wall",
2874 #                        debug   => "-g -O0",
2875 #                        release => "-O3")
2876 #
2877 sub picker {
2878     my %opts = @_;
2879     return sub { add($opts{default} || (),
2880                      $opts{$config{build_type}} || ())->(); }
2881 }
2882
2883 # Helper function to combine several values of different types into one.
2884 # This is useful if you want to combine a string with the result of a
2885 # lazy function, such as:
2886 #
2887 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
2888 #
2889 sub combine {
2890     my @stuff = @_;
2891     return sub { add(@stuff)->(); }
2892 }
2893
2894 # Helper function to implement conditional values depending on the value
2895 # of $disabled{threads}.  Can be used as follows:
2896 #
2897 #       cflags => combine("-Wall", threads("-pthread"))
2898 #
2899 sub threads {
2900     my @flags = @_;
2901     return sub { add($disabled{threads} ? () : @flags)->(); }
2902 }
2903
2904 sub shared {
2905     my @flags = @_;
2906     return sub { add($disabled{shared} ? () : @flags)->(); }
2907 }
2908
2909 our $add_called = 0;
2910 # Helper function to implement adding values to already existing configuration
2911 # values.  It handles elements that are ARRAYs, CODEs and scalars
2912 sub _add {
2913     my $separator = shift;
2914
2915     # If there's any ARRAY in the collection of values OR the separator
2916     # is undef, we will return an ARRAY of combined values, otherwise a
2917     # string of joined values with $separator as the separator.
2918     my $found_array = !defined($separator);
2919
2920     my @values =
2921         map {
2922             my $res = $_;
2923             while (ref($res) eq "CODE") {
2924                 $res = $res->();
2925             }
2926             if (defined($res)) {
2927                 if (ref($res) eq "ARRAY") {
2928                     $found_array = 1;
2929                     @$res;
2930                 } else {
2931                     $res;
2932                 }
2933             } else {
2934                 ();
2935             }
2936     } (@_);
2937
2938     $add_called = 1;
2939
2940     if ($found_array) {
2941         [ @values ];
2942     } else {
2943         join($separator, grep { defined($_) && $_ ne "" } @values);
2944     }
2945 }
2946 sub add_before {
2947     my $separator = " ";
2948     if (ref($_[$#_]) eq "HASH") {
2949         my $opts = pop;
2950         $separator = $opts->{separator};
2951     }
2952     my @x = @_;
2953     sub { _add($separator, @x, @_) };
2954 }
2955 sub add {
2956     my $separator = " ";
2957     if (ref($_[$#_]) eq "HASH") {
2958         my $opts = pop;
2959         $separator = $opts->{separator};
2960     }
2961     my @x = @_;
2962     sub { _add($separator, @_, @x) };
2963 }
2964
2965 sub read_eval_file {
2966     my $fname = shift;
2967     my $content;
2968     my @result;
2969
2970     open F, "< $fname" or die "Can't open '$fname': $!\n";
2971     {
2972         undef local $/;
2973         $content = <F>;
2974     }
2975     close F;
2976     {
2977         local $@;
2978
2979         @result = ( eval $content );
2980         warn $@ if $@;
2981     }
2982     return wantarray ? @result : $result[0];
2983 }
2984
2985 # configuration reader, evaluates the input file as a perl script and expects
2986 # it to fill %targets with target configurations.  Those are then added to
2987 # %table.
2988 sub read_config {
2989     my $fname = shift;
2990     my %targets;
2991
2992     {
2993         # Protect certain tables from tampering
2994         local %table = ();
2995
2996         %targets = read_eval_file($fname);
2997     }
2998     my %preexisting = ();
2999     foreach (sort keys %targets) {
3000         $preexisting{$_} = 1 if $table{$_};
3001     }
3002     die <<"EOF",
3003 The following config targets from $fname
3004 shadow pre-existing config targets with the same name:
3005 EOF
3006         map { "  $_\n" } sort keys %preexisting
3007         if %preexisting;
3008
3009
3010     # For each target, check that it's configured with a hash table.
3011     foreach (keys %targets) {
3012         if (ref($targets{$_}) ne "HASH") {
3013             if (ref($targets{$_}) eq "") {
3014                 warn "Deprecated target configuration for $_, ignoring...\n";
3015             } else {
3016                 warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
3017             }
3018             delete $targets{$_};
3019         } else {
3020             $targets{$_}->{_conf_fname_int} = add([ $fname ]);
3021         }
3022     }
3023
3024     %table = (%table, %targets);
3025
3026 }
3027
3028 # configuration resolver.  Will only resolve all the lazy evaluation
3029 # codeblocks for the chosen target and all those it inherits from,
3030 # recursively
3031 sub resolve_config {
3032     my $target = shift;
3033     my @breadcrumbs = @_;
3034
3035 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
3036
3037     if (grep { $_ eq $target } @breadcrumbs) {
3038         die "inherit_from loop!  target backtrace:\n  "
3039             ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
3040     }
3041
3042     if (!defined($table{$target})) {
3043         warn "Warning! target $target doesn't exist!\n";
3044         return ();
3045     }
3046     # Recurse through all inheritances.  They will be resolved on the
3047     # fly, so when this operation is done, they will all just be a
3048     # bunch of attributes with string values.
3049     # What we get here, though, are keys with references to lists of
3050     # the combined values of them all.  We will deal with lists after
3051     # this stage is done.
3052     my %combined_inheritance = ();
3053     if ($table{$target}->{inherit_from}) {
3054         my @inherit_from =
3055             map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
3056         foreach (@inherit_from) {
3057             my %inherited_config = resolve_config($_, $target, @breadcrumbs);
3058
3059             # 'template' is a marker that's considered private to
3060             # the config that had it.
3061             delete $inherited_config{template};
3062
3063             foreach (keys %inherited_config) {
3064                 if (!$combined_inheritance{$_}) {
3065                     $combined_inheritance{$_} = [];
3066                 }
3067                 push @{$combined_inheritance{$_}}, $inherited_config{$_};
3068             }
3069         }
3070     }
3071
3072     # We won't need inherit_from in this target any more, since we've
3073     # resolved all the inheritances that lead to this
3074     delete $table{$target}->{inherit_from};
3075
3076     # Now is the time to deal with those lists.  Here's the place to
3077     # decide what shall be done with those lists, all based on the
3078     # values of the target we're currently dealing with.
3079     # - If a value is a coderef, it will be executed with the list of
3080     #   inherited values as arguments.
3081     # - If the corresponding key doesn't have a value at all or is the
3082     #   empty string, the inherited value list will be run through the
3083     #   default combiner (below), and the result becomes this target's
3084     #   value.
3085     # - Otherwise, this target's value is assumed to be a string that
3086     #   will simply override the inherited list of values.
3087     my $default_combiner = add();
3088
3089     my %all_keys =
3090         map { $_ => 1 } (keys %combined_inheritance,
3091                          keys %{$table{$target}});
3092
3093     sub process_values {
3094         my $object    = shift;
3095         my $inherited = shift;  # Always a [ list ]
3096         my $target    = shift;
3097         my $entry     = shift;
3098
3099         $add_called = 0;
3100
3101         while(ref($object) eq "CODE") {
3102             $object = $object->(@$inherited);
3103         }
3104         if (!defined($object)) {
3105             return ();
3106         }
3107         elsif (ref($object) eq "ARRAY") {
3108             local $add_called;  # To make sure recursive calls don't affect it
3109             return [ map { process_values($_, $inherited, $target, $entry) }
3110                      @$object ];
3111         } elsif (ref($object) eq "") {
3112             return $object;
3113         } else {
3114             die "cannot handle reference type ",ref($object)
3115                 ," found in target ",$target," -> ",$entry,"\n";
3116         }
3117     }
3118
3119     foreach (sort keys %all_keys) {
3120         my $previous = $combined_inheritance{$_};
3121
3122         # Current target doesn't have a value for the current key?
3123         # Assign it the default combiner, the rest of this loop body
3124         # will handle it just like any other coderef.
3125         if (!exists $table{$target}->{$_}) {
3126             $table{$target}->{$_} = $default_combiner;
3127         }
3128
3129         $table{$target}->{$_} = process_values($table{$target}->{$_},
3130                                                $combined_inheritance{$_},
3131                                                $target, $_);
3132         unless(defined($table{$target}->{$_})) {
3133             delete $table{$target}->{$_};
3134         }
3135 #        if ($extra_checks &&
3136 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
3137 #            warn "$_ got replaced in $target\n";
3138 #        }
3139     }
3140
3141     # Finally done, return the result.
3142     return %{$table{$target}};
3143 }
3144
3145 sub usage
3146         {
3147         print STDERR $usage;
3148         print STDERR "\npick os/compiler from:\n";
3149         my $j=0;
3150         my $i;
3151         my $k=0;
3152         foreach $i (sort keys %table)
3153                 {
3154                 next if $table{$i}->{template};
3155                 next if $i =~ /^debug/;
3156                 $k += length($i) + 1;
3157                 if ($k > 78)
3158                         {
3159                         print STDERR "\n";
3160                         $k=length($i);
3161                         }
3162                 print STDERR $i . " ";
3163                 }
3164         foreach $i (sort keys %table)
3165                 {
3166                 next if $table{$i}->{template};
3167                 next if $i !~ /^debug/;
3168                 $k += length($i) + 1;
3169                 if ($k > 78)
3170                         {
3171                         print STDERR "\n";
3172                         $k=length($i);
3173                         }
3174                 print STDERR $i . " ";
3175                 }
3176         print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
3177         exit(1);
3178         }
3179
3180 sub run_dofile
3181 {
3182     my $out = shift;
3183     my @templates = @_;
3184
3185     unlink $out || warn "Can't remove $out, $!"
3186         if -f $out;
3187     foreach (@templates) {
3188         die "Can't open $_, $!" unless -f $_;
3189     }
3190     my $perlcmd = (quotify("maybeshell", $config{PERL}))[0];
3191     my $cmd = "$perlcmd \"-I.\" \"-Mconfigdata\" \"$dofile\" -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
3192     #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
3193     system($cmd);
3194     exit 1 if $? != 0;
3195     rename("$out.new", $out) || die "Can't rename $out.new, $!";
3196 }
3197
3198 sub compiler_predefined {
3199     state %predefined;
3200     my $cc = shift;
3201
3202     return () if $^O eq 'VMS';
3203
3204     die 'compiler_predefined called without a compiler command'
3205         unless $cc;
3206
3207     if (! $predefined{$cc}) {
3208
3209         $predefined{$cc} = {};
3210
3211         # collect compiler pre-defines from gcc or gcc-alike...
3212         open(PIPE, "$cc -dM -E -x c /dev/null 2>&1 |");
3213         while (my $l = <PIPE>) {
3214             $l =~ m/^#define\s+(\w+(?:\(\w+\))?)(?:\s+(.+))?/ or last;
3215             $predefined{$cc}->{$1} = $2 // '';
3216         }
3217         close(PIPE);
3218     }
3219
3220     return %{$predefined{$cc}};
3221 }
3222
3223 sub which
3224 {
3225     my ($name)=@_;
3226
3227     if (eval { require IPC::Cmd; 1; }) {
3228         IPC::Cmd->import();
3229         return scalar IPC::Cmd::can_run($name);
3230     } else {
3231         # if there is $directories component in splitpath,
3232         # then it's not something to test with $PATH...
3233         return $name if (File::Spec->splitpath($name))[1];
3234
3235         foreach (File::Spec->path()) {
3236             my $fullpath = catfile($_, "$name$target{exe_extension}");
3237             if (-f $fullpath and -x $fullpath) {
3238                 return $fullpath;
3239             }
3240         }
3241     }
3242 }
3243
3244 sub env
3245 {
3246     my $name = shift;
3247     my %opts = @_;
3248
3249     unless ($opts{cacheonly}) {
3250         # Note that if $ENV{$name} doesn't exist or is undefined,
3251         # $config{perlenv}->{$name} will be created with the value
3252         # undef.  This is intentional.
3253
3254         $config{perlenv}->{$name} = $ENV{$name}
3255             if ! exists $config{perlenv}->{$name};
3256     }
3257     return $config{perlenv}->{$name};
3258 }
3259
3260 # Configuration printer ##############################################
3261
3262 sub print_table_entry
3263 {
3264     local $now_printing = shift;
3265     my %target = resolve_config($now_printing);
3266     my $type = shift;
3267
3268     # Don't print the templates
3269     return if $target{template};
3270
3271     my @sequence = (
3272         "sys_id",
3273         "cpp",
3274         "cppflags",
3275         "defines",
3276         "includes",
3277         "cc",
3278         "cflags",
3279         "unistd",
3280         "ld",
3281         "lflags",
3282         "loutflag",
3283         "ex_libs",
3284         "bn_ops",
3285         "apps_aux_src",
3286         "cpuid_asm_src",
3287         "uplink_aux_src",
3288         "bn_asm_src",
3289         "ec_asm_src",
3290         "des_asm_src",
3291         "aes_asm_src",
3292         "bf_asm_src",
3293         "md5_asm_src",
3294         "cast_asm_src",
3295         "sha1_asm_src",
3296         "rc4_asm_src",
3297         "rmd160_asm_src",
3298         "rc5_asm_src",
3299         "wp_asm_src",
3300         "cmll_asm_src",
3301         "modes_asm_src",
3302         "padlock_asm_src",
3303         "chacha_asm_src",
3304         "poly1035_asm_src",
3305         "thread_scheme",
3306         "perlasm_scheme",
3307         "dso_scheme",
3308         "shared_target",
3309         "shared_cflag",
3310         "shared_defines",
3311         "shared_ldflag",
3312         "shared_rcflag",
3313         "shared_extension",
3314         "dso_extension",
3315         "obj_extension",
3316         "exe_extension",
3317         "ranlib",
3318         "ar",
3319         "arflags",
3320         "aroutflag",
3321         "rc",
3322         "rcflags",
3323         "rcoutflag",
3324         "mt",
3325         "mtflags",
3326         "mtinflag",
3327         "mtoutflag",
3328         "multilib",
3329         "build_scheme",
3330         );
3331
3332     if ($type eq "TABLE") {
3333         print "\n";
3334         print "*** $now_printing\n";
3335         foreach (@sequence) {
3336             if (ref($target{$_}) eq "ARRAY") {
3337                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
3338             } else {
3339                 printf "\$%-12s = %s\n", $_, $target{$_};
3340             }
3341         }
3342     } elsif ($type eq "HASH") {
3343         my $largest =
3344             length((sort { length($a) <=> length($b) } @sequence)[-1]);
3345         print "    '$now_printing' => {\n";
3346         foreach (@sequence) {
3347             if ($target{$_}) {
3348                 if (ref($target{$_}) eq "ARRAY") {
3349                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
3350                 } else {
3351                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
3352                 }
3353             }
3354         }
3355         print "    },\n";
3356     }
3357 }
3358
3359 # Utility routines ###################################################
3360
3361 # On VMS, if the given file is a logical name, File::Spec::Functions
3362 # will consider it an absolute path.  There are cases when we want a
3363 # purely syntactic check without checking the environment.
3364 sub isabsolute {
3365     my $file = shift;
3366
3367     # On non-platforms, we just use file_name_is_absolute().
3368     return file_name_is_absolute($file) unless $^O eq "VMS";
3369
3370     # If the file spec includes a device or a directory spec,
3371     # file_name_is_absolute() is perfectly safe.
3372     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
3373
3374     # Here, we know the given file spec isn't absolute
3375     return 0;
3376 }
3377
3378 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
3379 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
3380 # realpath() requires that at least all path components except the last is an
3381 # existing directory.  On VMS, the last component of the directory spec must
3382 # exist.
3383 sub absolutedir {
3384     my $dir = shift;
3385
3386     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
3387     # will return the volume name for the device, no matter what.  Also,
3388     # it will return an incorrect directory spec if the argument is a
3389     # directory that doesn't exist.
3390     if ($^O eq "VMS") {
3391         return rel2abs($dir);
3392     }
3393
3394     # We use realpath() on Unix, since no other will properly clean out
3395     # a directory spec.
3396     use Cwd qw/realpath/;
3397
3398     return realpath($dir);
3399 }
3400
3401 sub quotify {
3402     my %processors = (
3403         perl    => sub { my $x = shift;
3404                          $x =~ s/([\\\$\@"])/\\$1/g;
3405                          return '"'.$x.'"'; },
3406         maybeshell => sub { my $x = shift;
3407                             (my $y = $x) =~ s/([\\\"])/\\$1/g;
3408                             if ($x ne $y || $x =~ m|\s|) {
3409                                 return '"'.$y.'"';
3410                             } else {
3411                                 return $x;
3412                             }
3413                         },
3414         );
3415     my $for = shift;
3416     my $processor =
3417         defined($processors{$for}) ? $processors{$for} : sub { shift; };
3418
3419     return map { $processor->($_); } @_;
3420 }
3421
3422 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
3423 # $filename is a file name to read from
3424 # $line_concat_cond_re is a regexp detecting a line continuation ending
3425 # $line_concat is a CODEref that takes care of concatenating two lines
3426 sub collect_from_file {
3427     my $filename = shift;
3428     my $line_concat_cond_re = shift;
3429     my $line_concat = shift;
3430
3431     open my $fh, $filename || die "unable to read $filename: $!\n";
3432     return sub {
3433         my $saved_line = "";
3434         $_ = "";
3435         while (<$fh>) {
3436             s|\R$||;
3437             if (defined $line_concat) {
3438                 $_ = $line_concat->($saved_line, $_);
3439                 $saved_line = "";
3440             }
3441             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3442                 $saved_line = $_;
3443                 next;
3444             }
3445             return $_;
3446         }
3447         die "$filename ending with continuation line\n" if $_;
3448         close $fh;
3449         return undef;
3450     }
3451 }
3452
3453 # collect_from_array($array, $line_concat_cond_re, $line_concat)
3454 # $array is an ARRAYref of lines
3455 # $line_concat_cond_re is a regexp detecting a line continuation ending
3456 # $line_concat is a CODEref that takes care of concatenating two lines
3457 sub collect_from_array {
3458     my $array = shift;
3459     my $line_concat_cond_re = shift;
3460     my $line_concat = shift;
3461     my @array = (@$array);
3462
3463     return sub {
3464         my $saved_line = "";
3465         $_ = "";
3466         while (defined($_ = shift @array)) {
3467             s|\R$||;
3468             if (defined $line_concat) {
3469                 $_ = $line_concat->($saved_line, $_);
3470                 $saved_line = "";
3471             }
3472             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
3473                 $saved_line = $_;
3474                 next;
3475             }
3476             return $_;
3477         }
3478         die "input text ending with continuation line\n" if $_;
3479         return undef;
3480     }
3481 }
3482
3483 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
3484 # $lineiterator is a CODEref that delivers one line at a time.
3485 # All following arguments are regex/CODEref pairs, where the regexp detects a
3486 # line and the CODEref does something with the result of the regexp.
3487 sub collect_information {
3488     my $lineiterator = shift;
3489     my %collectors = @_;
3490
3491     while(defined($_ = $lineiterator->())) {
3492         s|\R$||;
3493         my $found = 0;
3494         if ($collectors{"BEFORE"}) {
3495             $collectors{"BEFORE"}->($_);
3496         }
3497         foreach my $re (keys %collectors) {
3498             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
3499                 $collectors{$re}->($lineiterator);
3500                 $found = 1;
3501             };
3502         }
3503         if ($collectors{"OTHERWISE"}) {
3504             $collectors{"OTHERWISE"}->($lineiterator, $_)
3505                 unless $found || !defined $collectors{"OTHERWISE"};
3506         }
3507         if ($collectors{"AFTER"}) {
3508             $collectors{"AFTER"}->($_);
3509         }
3510     }
3511 }
3512
3513 # tokenize($line)
3514 # $line is a line of text to split up into tokens
3515 # returns a list of tokens
3516 #
3517 # Tokens are divided by spaces.  If the tokens include spaces, they
3518 # have to be quoted with single or double quotes.  Double quotes
3519 # inside a double quoted token must be escaped.  Escaping is done
3520 # with backslash.
3521 # Basically, the same quoting rules apply for " and ' as in any
3522 # Unix shell.
3523 sub tokenize {
3524     my $line = my $debug_line = shift;
3525     my @result = ();
3526
3527     while ($line =~ s|^\s+||, $line ne "") {
3528         my $token = "";
3529         while ($line ne "" && $line !~ m|^\s|) {
3530             if ($line =~ m/^"((?:[^"\\]+|\\.)*)"/) {
3531                 $token .= $1;
3532                 $line = $';
3533             } elsif ($line =~ m/^'([^']*)'/) {
3534                 $token .= $1;
3535                 $line = $';
3536             } elsif ($line =~ m/^(\S+)/) {
3537                 $token .= $1;
3538                 $line = $';
3539             }
3540         }
3541         push @result, $token;
3542     }
3543
3544     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
3545         print STDERR "DEBUG[tokenize]: Parsed '$debug_line' into:\n";
3546         print STDERR "DEBUG[tokenize]: ('", join("', '", @result), "')\n";
3547     }
3548     return @result;
3549 }