Configure

   1 #! /usr/bin/env perl
   2 # -*- mode: perl; -*-
   3 # Copyright 2016-2017 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 require 5.10.0;
  13 use strict;
  14 use Config;
  15 use File::Basename;
  16 use File::Spec::Functions qw/:DEFAULT abs2rel rel2abs/;
  17 use File::Path qw/mkpath/;
  18 use if $^O ne "VMS", 'File::Glob' => qw/glob/;
  19
  20 # see INSTALL for instructions.
  21
  22 my $usage="Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-Kxxx] [no-hw-xxx|no-hw] [[no-]threads] [[no-]shared] [[no-]zlib|zlib-dynamic] [no-asm] [no-dso] [no-egd] [sctp] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--with-xxx[=vvv]] [--config=FILE] os/compiler[:flags]\n";
  23
  24 # Options:
  25 #
  26 # --config      add the given configuration file, which will be read after
  27 #               any "Configurations*" files that are found in the same
  28 #               directory as this script.
  29 # --prefix      prefix for the OpenSSL installation, which includes the
  30 #               directories bin, lib, include, share/man, share/doc/openssl
  31 #               This becomes the value of INSTALLTOP in Makefile
  32 #               (Default: /usr/local)
  33 # --openssldir  OpenSSL data area, such as openssl.cnf, certificates and keys.
  34 #               If it's a relative directory, it will be added on the directory
  35 #               given with --prefix.
  36 #               This becomes the value of OPENSSLDIR in Makefile and in C.
  37 #               (Default: PREFIX/ssl)
  38 #
  39 # --cross-compile-prefix Add specified prefix to binutils components.
  40 #
  41 # --api         One of 0.9.8, 1.0.0 or 1.1.0.  Do not compile support for
  42 #               interfaces deprecated as of the specified OpenSSL version.
  43 #
  44 # no-hw-xxx     do not compile support for specific crypto hardware.
  45 #               Generic OpenSSL-style methods relating to this support
  46 #               are always compiled but return NULL if the hardware
  47 #               support isn't compiled.
  48 # no-hw         do not compile support for any crypto hardware.
  49 # [no-]threads  [don't] try to create a library that is suitable for
  50 #               multithreaded applications (default is "threads" if we
  51 #               know how to do it)
  52 # [no-]shared   [don't] try to create shared libraries when supported.
  53 # [no-]pic      [don't] try to build position independent code when supported.
  54 #               If disabled, it also disables shared and dynamic-engine.
  55 # no-asm        do not use assembler
  56 # no-dso        do not compile in any native shared-library methods. This
  57 #               will ensure that all methods just return NULL.
  58 # no-egd        do not compile support for the entropy-gathering daemon APIs
  59 # [no-]zlib     [don't] compile support for zlib compression.
  60 # zlib-dynamic  Like "zlib", but the zlib library is expected to be a shared
  61 #               library and will be loaded in run-time by the OpenSSL library.
  62 # sctp          include SCTP support
  63 # enable-weak-ssl-ciphers
  64 #               Enable weak ciphers that are disabled by default. This currently
  65 #               only includes RC4 based ciphers.
  66 # 386           generate 80386 code in assembly modules
  67 # no-sse2       disables IA-32 SSE2 code in assembly modules, the above
  68 #               mentioned '386' option implies this one
  69 # no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
  70 # -<xxx> +<xxx> compiler options are passed through
  71 # -static       while -static is also a pass-through compiler option (and
  72 #               as such is limited to environments where it's actually
  73 #               meaningful), it triggers a number configuration options,
  74 #               namely no-dso, no-pic, no-shared and no-threads. It is
  75 #               argued that the only reason to produce statically linked
  76 #               binaries (and in context it means executables linked with
  77 #               -static flag, and not just executables linked with static
  78 #               libcrypto.a) is to eliminate dependency on specific run-time,
  79 #               a.k.a. libc version. The mentioned config options are meant
  80 #               to achieve just that. Unfortunately on Linux it's impossible
  81 #               to eliminate the dependency completely for openssl executable
  82 #               because of getaddrinfo and gethostbyname calls, which can
  83 #               invoke dynamically loadable library facility anyway to meet
  84 #               the lookup requests. For this reason on Linux statically
  85 #               linked openssl executable has rather debugging value than
  86 #               production quality.
  87 #
  88 # DEBUG_SAFESTACK use type-safe stacks to enforce type-safety on stack items
  89 #               provided to stack calls. Generates unique stack functions for
  90 #               each possible stack type.
  91 # BN_LLONG      use the type 'long long' in crypto/bn/bn.h
  92 # RC4_CHAR      use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
  93 # Following are set automatically by this script
  94 #
  95 # MD5_ASM       use some extra md5 assembler,
  96 # SHA1_ASM      use some extra sha1 assembler, must define L_ENDIAN for x86
  97 # RMD160_ASM    use some extra ripemd160 assembler,
  98 # SHA256_ASM    sha256_block is implemented in assembler
  99 # SHA512_ASM    sha512_block is implemented in assembler
 100 # AES_ASM       AES_[en|de]crypt is implemented in assembler
 101
 102 # Minimum warning options... any contributions to OpenSSL should at least get
 103 # past these.
 104
 105 # DEBUG_UNUSED enables __owur (warn unused result) checks.
 106 # -DPEDANTIC complements -pedantic and is meant to mask code that
 107 # is not strictly standard-compliant and/or implementation-specific,
 108 # e.g. inline assembly, disregards to alignment requirements, such
 109 # that -pedantic would complain about. Incidentally -DPEDANTIC has
 110 # to be used even in sanitized builds, because sanitizer too is
 111 # supposed to and does take notice of non-standard behaviour. Then
 112 # -pedantic with pre-C9x compiler would also complain about 'long
 113 # long' not being supported. As 64-bit algorithms are common now,
 114 # it grew impossible to resolve this without sizeable additional
 115 # code, so we just tell compiler to be pedantic about everything
 116 # but 'long long' type.
 117
 118 my $gcc_devteam_warn = "-DDEBUG_UNUSED"
 119         . " -Wswitch"
 120         . " -DPEDANTIC -pedantic -Wno-long-long"
 121         . " -Wall"
 122         . " -Wsign-compare"
 123         . " -Wmissing-prototypes"
 124         . " -Wshadow"
 125         . " -Wformat"
 126         . " -Wtype-limits"
 127         . " -Wundef"
 128         . " -Werror"
 129         ;
 130
 131 # These are used in addition to $gcc_devteam_warn when the compiler is clang.
 132 # TODO(openssl-team): fix problems and investigate if (at least) the
 133 # following warnings can also be enabled:
 134 #       -Wcast-align
 135 #       -Wunreachable-code -- no, too ugly/compiler-specific
 136 #       -Wlanguage-extension-token -- no, we use asm()
 137 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
 138 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
 139 my $clang_devteam_warn = ""
 140         . " -Qunused-arguments"
 141         . " -Wextra"
 142         . " -Wswitch -Wswitch-default"
 143         . " -Wno-unused-parameter"
 144         . " -Wno-parentheses-equality"
 145         . " -Wno-missing-field-initializers"
 146         . " -Wno-language-extension-token"
 147         . " -Wno-extended-offsetof"
 148         . " -Wconditional-uninitialized"
 149         . " -Wincompatible-pointer-types-discards-qualifiers"
 150         . " -Wmissing-variable-declarations"
 151         . " -Wundef"
 152         ;
 153
 154 # This adds backtrace information to the memory leak info.  Is only used
 155 # when crypto-mdebug-backtrace is enabled.
 156 my $memleak_devteam_backtrace = "-rdynamic";
 157
 158 my $strict_warnings = 0;
 159
 160 # As for $BSDthreads. Idea is to maintain "collective" set of flags,
 161 # which would cover all BSD flavors. -pthread applies to them all,
 162 # but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
 163 # -lc_r, which is sufficient. FreeBSD 4.x expands it as -lc_r,
 164 # which has to be accompanied by explicit -D_THREAD_SAFE and
 165 # sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
 166 # seems to be sufficient?
 167 our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
 168
 169 #
 170 # API compatibility name to version number mapping.
 171 #
 172 my $maxapi = "1.1.0";           # API for "no-deprecated" builds
 173 my $apitable = {
 174     "1.1.0" => "0x10100000L",
 175     "1.0.0" => "0x10000000L",
 176     "0.9.8" => "0x00908000L",
 177 };
 178
 179 our %table = ();
 180 our %config = ();
 181 our %withargs = ();
 182
 183 # Forward declarations ###############################################
 184
 185 # read_config(filename)
 186 #
 187 # Reads a configuration file and populates %table with the contents
 188 # (which the configuration file places in %targets).
 189 sub read_config;
 190
 191 # resolve_config(target)
 192 #
 193 # Resolves all the late evaluations, inheritances and so on for the
 194 # chosen target and any target it inherits from.
 195 sub resolve_config;
 196
 197
 198 # Information collection #############################################
 199
 200 # Unified build supports separate build dir
 201 my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
 202 my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
 203 my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));
 204
 205 my $local_config_envname = 'OPENSSL_LOCAL_CONFIG_DIR';
 206
 207 $config{sourcedir} = abs2rel($srcdir);
 208 $config{builddir} = abs2rel($blddir);
 209
 210 # Collect reconfiguration information if needed
 211 my @argvcopy=@ARGV;
 212
 213 if (grep /^reconf(igure)?$/, @argvcopy) {
 214     if (-f "./configdata.pm") {
 215         my $file = "./configdata.pm";
 216         unless (my $return = do $file) {
 217             die "couldn't parse $file: $@" if $@;
 218             die "couldn't do $file: $!"    unless defined $return;
 219             die "couldn't run $file"       unless $return;
 220         }
 221
 222         @argvcopy = defined($configdata::config{perlargv}) ?
 223             @{$configdata::config{perlargv}} : ();
 224         die "Incorrect data to reconfigure, please do a normal configuration\n"
 225             if (grep(/^reconf/,@argvcopy));
 226         $ENV{CROSS_COMPILE} = $configdata::config{cross_compile_prefix}
 227             if defined($configdata::config{cross_compile_prefix});
 228         $ENV{CC} = $configdata::config{cc}
 229             if defined($configdata::config{cc});
 230         $ENV{CXX} = $configdata::config{cxx}
 231             if defined($configdata::config{cxx});
 232         $ENV{BUILDFILE} = $configdata::config{build_file}
 233             if defined($configdata::config{build_file});
 234         $ENV{$local_config_envname} = $configdata::config{local_config_dir}
 235             if defined($configdata::config{local_config_dir});
 236
 237         print "Reconfiguring with: ", join(" ",@argvcopy), "\n";
 238         print "    CROSS_COMPILE = ",$ENV{CROSS_COMPILE},"\n"
 239             if $ENV{CROSS_COMPILE};
 240         print "    CC = ",$ENV{CC},"\n" if $ENV{CC};
 241         print "    CXX = ",$ENV{CXX},"\n" if $ENV{CXX};
 242         print "    BUILDFILE = ",$ENV{BUILDFILE},"\n" if $ENV{BUILDFILE};
 243         print "    $local_config_envname = ",$ENV{$local_config_envname},"\n"
 244             if $ENV{$local_config_envname};
 245     } else {
 246         die "Insufficient data to reconfigure, please do a normal configuration\n";
 247     }
 248 }
 249
 250 $config{perlargv} = [ @argvcopy ];
 251
 252 # Collect version numbers
 253 $config{version} = "unknown";
 254 $config{version_num} = "unknown";
 255 $config{shlib_version_number} = "unknown";
 256 $config{shlib_version_history} = "unknown";
 257
 258 collect_information(
 259     collect_from_file(catfile($srcdir,'include/openssl/opensslv.h')),
 260     qr/OPENSSL.VERSION.TEXT.*OpenSSL (\S+) / => sub { $config{version} = $1; },
 261     qr/OPENSSL.VERSION.NUMBER.*(0x\S+)/      => sub { $config{version_num}=$1 },
 262     qr/SHLIB_VERSION_NUMBER *"([^"]+)"/      => sub { $config{shlib_version_number}=$1 },
 263     qr/SHLIB_VERSION_HISTORY *"([^"]*)"/     => sub { $config{shlib_version_history}=$1 }
 264     );
 265 if ($config{shlib_version_history} ne "") { $config{shlib_version_history} .= ":"; }
 266
 267 ($config{major}, $config{minor})
 268     = ($config{version} =~ /^([0-9]+)\.([0-9\.]+)/);
 269 ($config{shlib_major}, $config{shlib_minor})
 270     = ($config{shlib_version_number} =~ /^([0-9]+)\.([0-9\.]+)/);
 271 die "erroneous version information in opensslv.h: ",
 272     "$config{major}, $config{minor}, $config{shlib_major}, $config{shlib_minor}\n"
 273     if ($config{major} eq "" || $config{minor} eq ""
 274         || $config{shlib_major} eq "" ||  $config{shlib_minor} eq "");
 275
 276 # Collect target configurations
 277
 278 my $pattern = catfile(dirname($0), "Configurations", "*.conf");
 279 foreach (sort glob($pattern)) {
 280     &read_config($_);
 281 }
 282
 283 if (defined $ENV{$local_config_envname}) {
 284     if ($^O eq 'VMS') {
 285         # VMS environment variables are logical names,
 286         # which can be used as is
 287         $pattern = $local_config_envname . ':' . '*.conf';
 288     } else {
 289         $pattern = catfile($ENV{$local_config_envname}, '*.conf');
 290     }
 291
 292     foreach (sort glob($pattern)) {
 293         &read_config($_);
 294     }
 295 }
 296
 297
 298 print "Configuring OpenSSL version $config{version} ($config{version_num})\n";
 299
 300 $config{prefix}="";
 301 $config{openssldir}="";
 302 $config{processor}="";
 303 $config{libdir}="";
 304 $config{cross_compile_prefix}="";
 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",
 314     "des", "aes", "rc2", "rc4", "rc5", "idea", "aria", "bf", "cast", "camellia", "seed", "chacha", "modes",
 315     "bn", "ec", "rsa", "dsa", "dh", "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"
 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     "bf",
 340     "blake2",
 341     "camellia",
 342     "capieng",
 343     "cast",
 344     "chacha",
 345     "cmac",
 346     "cms",
 347     "comp",
 348     "crypto-mdebug",
 349     "crypto-mdebug-backtrace",
 350     "ct",
 351     "deprecated",
 352     "des",
 353     "dgram",
 354     "dh",
 355     "dsa",
 356     "dso",
 357     "dtls",
 358     "dynamic-engine",
 359     "ec",
 360     "ec2m",
 361     "ecdh",
 362     "ecdsa",
 363     "ec_nistp_64_gcc_128",
 364     "egd",
 365     "engine",
 366     "err",
 367     "external-tests",
 368     "filenames",
 369     "fuzz-libfuzzer",
 370     "fuzz-afl",
 371     "gost",
 372     "heartbeats",
 373     "hw(-.+)?",
 374     "idea",
 375     "makedepend",
 376     "md2",
 377     "md4",
 378     "mdc2",
 379     "msan",
 380     "multiblock",
 381     "nextprotoneg",
 382     "ocb",
 383     "ocsp",
 384     "pic",
 385     "poly1305",
 386     "posix-io",
 387     "psk",
 388     "rc2",
 389     "rc4",
 390     "rc5",
 391     "rdrand",
 392     "rfc3779",
 393     "rmd160",
 394     "scrypt",
 395     "sctp",
 396     "seed",
 397     "shared",
 398     "siphash",
 399     "sock",
 400     "srp",
 401     "srtp",
 402     "sse2",
 403     "ssl",
 404     "ssl-trace",
 405     "static-engine",
 406     "stdio",
 407     "tests",
 408     "threads",
 409     "tls",
 410     "tls13downgrade",
 411     "ts",
 412     "ubsan",
 413     "ui",
 414     "unit-test",
 415     "whirlpool",
 416     "weak-ssl-ciphers",
 417     "zlib",
 418     "zlib-dynamic",
 419     );
 420 foreach my $proto ((@tls, @dtls))
 421         {
 422         push(@disablables, $proto);
 423         push(@disablables, "$proto-method");
 424         }
 425
 426 my %deprecated_disablables = (
 427     "ssl2" => undef,
 428     "buf-freelists" => undef,
 429     "ripemd" => "rmd160"
 430     );
 431
 432 # All of the following is disabled by default (RC5 was enabled before 0.9.8):
 433
 434 our %disabled = ( # "what"         => "comment"
 435                   "aria"                => "default",
 436                   "asan"                => "default",
 437                   "crypto-mdebug"       => "default",
 438                   "crypto-mdebug-backtrace" => "default",
 439                   "ec_nistp_64_gcc_128" => "default",
 440                   "egd"                 => "default",
 441                   "external-tests"      => "default",
 442                   "fuzz-libfuzzer"      => "default",
 443                   "fuzz-afl"            => "default",
 444                   "heartbeats"          => "default",
 445                   "md2"                 => "default",
 446                   "msan"                => "default",
 447                   "rc5"                 => "default",
 448                   "sctp"                => "default",
 449                   "ssl-trace"           => "default",
 450                   "ssl3"                => "default",
 451                   "ssl3-method"         => "default",
 452                   "ubsan"               => "default",
 453           #TODO(TLS1.3): Temporarily disabled while this is a WIP
 454                   "tls1_3"              => "default",
 455                   "tls13downgrade"      => "default",
 456                   "unit-test"           => "default",
 457                   "weak-ssl-ciphers"    => "default",
 458                   "zlib"                => "default",
 459                   "zlib-dynamic"        => "default",
 460                 );
 461
 462 # Note: => pair form used for aesthetics, not to truly make a hash table
 463 my @disable_cascades = (
 464     # "what"            => [ "cascade", ... ]
 465     sub { $config{processor} eq "386" }
 466                         => [ "sse2" ],
 467     "ssl"               => [ "ssl3" ],
 468     "ssl3-method"       => [ "ssl3" ],
 469     "zlib"              => [ "zlib-dynamic" ],
 470     "des"               => [ "mdc2" ],
 471     "ec"                => [ "ecdsa", "ecdh" ],
 472
 473     "dgram"             => [ "dtls", "sctp" ],
 474     "sock"              => [ "dgram" ],
 475     "dtls"              => [ @dtls ],
 476     sub { 0 == scalar grep { !$disabled{$_} } @dtls }
 477                         => [ "dtls" ],
 478
 479     # SSL 3.0, (D)TLS 1.0 and TLS 1.1 require MD5 and SHA
 480     "md5"               => [ "ssl", "tls1", "tls1_1", "dtls1" ],
 481     "sha"               => [ "ssl", "tls1", "tls1_1", "dtls1" ],
 482
 483     # Additionally, SSL 3.0 requires either RSA or DSA+DH
 484     sub { $disabled{rsa}
 485           && ($disabled{dsa} || $disabled{dh}); }
 486                         => [ "ssl" ],
 487
 488     # (D)TLS 1.0 and TLS 1.1 also require either RSA or DSA+DH
 489     # or ECDSA + ECDH.  (D)TLS 1.2 has this requirement as well.
 490     # (XXX: We don't support PSK-only builds).
 491     sub { $disabled{rsa}
 492           && ($disabled{dsa} || $disabled{dh})
 493           && ($disabled{ecdsa} || $disabled{ecdh}); }
 494                         => [ "tls1", "tls1_1", "tls1_2", "tls1_3",
 495                              "dtls1", "dtls1_2" ],
 496
 497     "tls"               => [ @tls ],
 498     sub { 0 == scalar grep { !$disabled{$_} } @tls }
 499                         => [ "tls" ],
 500
 501     # SRP and HEARTBEATS require TLSEXT
 502     "tlsext"            => [ "srp", "heartbeats" ],
 503
 504     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
 505
 506     # Without DSO, we can't load dynamic engines, so don't build them dynamic
 507     "dso"               => [ "dynamic-engine" ],
 508
 509     # Without position independent code, there can be no shared libraries or DSOs
 510     "pic"               => [ "shared" ],
 511     "shared"            => [ "dynamic-engine" ],
 512     "engine"            => [ "afalgeng" ],
 513
 514     # no-autoalginit is only useful when building non-shared
 515     "autoalginit"       => [ "shared", "apps" ],
 516
 517     "stdio"             => [ "apps", "capieng" ],
 518     "apps"              => [ "tests" ],
 519     "comp"              => [ "zlib" ],
 520     "ec"                => [ "tls1_3" ],
 521     sub { !$disabled{"unit-test"} } => [ "heartbeats" ],
 522
 523     sub { !$disabled{"msan"} } => [ "asm" ],
 524     );
 525
 526 # Avoid protocol support holes.  Also disable all versions below N, if version
 527 # N is disabled while N+1 is enabled.
 528 #
 529 my @list = (reverse @tls);
 530 while ((my $first, my $second) = (shift @list, shift @list)) {
 531     last unless @list;
 532     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 533                               => [ @list ] );
 534     unshift @list, $second;
 535 }
 536 my @list = (reverse @dtls);
 537 while ((my $first, my $second) = (shift @list, shift @list)) {
 538     last unless @list;
 539     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 540                               => [ @list ] );
 541     unshift @list, $second;
 542 }
 543
 544 # Explicit "no-..." options will be collected in %disabled along with the defaults.
 545 # To remove something from %disabled, use "enable-foo".
 546 # For symmetry, "disable-foo" is a synonym for "no-foo".
 547
 548 my $no_sse2=0;
 549
 550 &usage if ($#ARGV < 0);
 551
 552 my $user_cflags="";
 553 my @user_defines=();
 554 $config{openssl_api_defines}=[];
 555 $config{openssl_algorithm_defines}=[];
 556 $config{openssl_thread_defines}=[];
 557 $config{openssl_sys_defines}=[];
 558 $config{openssl_other_defines}=[];
 559 my $libs="";
 560 my $target="";
 561 $config{options}="";
 562 $config{build_type} = "release";
 563
 564 my %unsupported_options = ();
 565 my %deprecated_options = ();
 566 while (@argvcopy)
 567         {
 568         $_ = shift @argvcopy;
 569         # VMS is a case insensitive environment, and depending on settings
 570         # out of our control, we may receive options uppercased.  Let's
 571         # downcase at least the part before any equal sign.
 572         if ($^O eq "VMS")
 573                 {
 574                 s/^([^=]*)/lc($1)/e;
 575                 }
 576         s /^-no-/no-/; # some people just can't read the instructions
 577
 578         # rewrite some options in "enable-..." form
 579         s /^-?-?shared$/enable-shared/;
 580         s /^sctp$/enable-sctp/;
 581         s /^threads$/enable-threads/;
 582         s /^zlib$/enable-zlib/;
 583         s /^zlib-dynamic$/enable-zlib-dynamic/;
 584
 585         if (/^(no|disable|enable)-(.+)$/)
 586                 {
 587                 my $word = $2;
 588                 if (!exists $deprecated_disablables{$word}
 589                         && !grep { $word =~ /^${_}$/ } @disablables)
 590                         {
 591                         $unsupported_options{$_} = 1;
 592                         next;
 593                         }
 594                 }
 595         if (/^no-(.+)$/ || /^disable-(.+)$/)
 596                 {
 597                 foreach my $proto ((@tls, @dtls))
 598                         {
 599                         if ($1 eq "$proto-method")
 600                                 {
 601                                 $disabled{"$proto"} = "option($proto-method)";
 602                                 last;
 603                                 }
 604                         }
 605                 if ($1 eq "dtls")
 606                         {
 607                         foreach my $proto (@dtls)
 608                                 {
 609                                 $disabled{$proto} = "option(dtls)";
 610                                 }
 611                         $disabled{"dtls"} = "option(dtls)";
 612                         }
 613                 elsif ($1 eq "ssl")
 614                         {
 615                         # Last one of its kind
 616                         $disabled{"ssl3"} = "option(ssl)";
 617                         }
 618                 elsif ($1 eq "tls")
 619                         {
 620                         # XXX: Tests will fail if all SSL/TLS
 621                         # protocols are disabled.
 622                         foreach my $proto (@tls)
 623                                 {
 624                                 $disabled{$proto} = "option(tls)";
 625                                 }
 626                         }
 627                 elsif ($1 eq "static-engine")
 628                         {
 629                         delete $disabled{"dynamic-engine"};
 630                         }
 631                 elsif ($1 eq "dynamic-engine")
 632                         {
 633                         $disabled{"dynamic-engine"} = "option";
 634                         }
 635                 elsif (exists $deprecated_disablables{$1})
 636                         {
 637                         $deprecated_options{$_} = 1;
 638                         if (defined $deprecated_disablables{$1})
 639                                 {
 640                                 $disabled{$deprecated_disablables{$1}} = "option";
 641                                 }
 642                         }
 643                 else
 644                         {
 645                         $disabled{$1} = "option";
 646                         }
 647                 # No longer an automatic choice
 648                 $auto_threads = 0 if ($1 eq "threads");
 649                 }
 650         elsif (/^enable-(.+)$/)
 651                 {
 652                 if ($1 eq "static-engine")
 653                         {
 654                         $disabled{"dynamic-engine"} = "option";
 655                         }
 656                 elsif ($1 eq "dynamic-engine")
 657                         {
 658                         delete $disabled{"dynamic-engine"};
 659                         }
 660                 elsif ($1 eq "zlib-dynamic")
 661                         {
 662                         delete $disabled{"zlib"};
 663                         }
 664                 my $algo = $1;
 665                 delete $disabled{$algo};
 666
 667                 # No longer an automatic choice
 668                 $auto_threads = 0 if ($1 eq "threads");
 669                 }
 670         elsif (/^--strict-warnings$/)
 671                 {
 672                 $strict_warnings = 1;
 673                 }
 674         elsif (/^--debug$/)
 675                 {
 676                 $config{build_type} = "debug";
 677                 }
 678         elsif (/^--release$/)
 679                 {
 680                 $config{build_type} = "release";
 681                 }
 682         elsif (/^386$/)
 683                 { $config{processor}=386; }
 684         elsif (/^fips$/)
 685                 {
 686                 die "FIPS mode not supported\n";
 687                 }
 688         elsif (/^rsaref$/)
 689                 {
 690                 # No RSAref support any more since it's not needed.
 691                 # The check for the option is there so scripts aren't
 692                 # broken
 693                 }
 694         elsif (/^nofipscanistercheck$/)
 695                 {
 696                 die "FIPS mode not supported\n";
 697                 }
 698         elsif (/^[-+]/)
 699                 {
 700                 if (/^--prefix=(.*)$/)
 701                         {
 702                         $config{prefix}=$1;
 703                         die "Directory given with --prefix MUST be absolute\n"
 704                                 unless file_name_is_absolute($config{prefix});
 705                         }
 706                 elsif (/^--api=(.*)$/)
 707                         {
 708                         $config{api}=$1;
 709                         }
 710                 elsif (/^--libdir=(.*)$/)
 711                         {
 712                         $config{libdir}=$1;
 713                         }
 714                 elsif (/^--openssldir=(.*)$/)
 715                         {
 716                         $config{openssldir}=$1;
 717                         }
 718                 elsif (/^--with-zlib-lib=(.*)$/)
 719                         {
 720                         $withargs{zlib_lib}=$1;
 721                         }
 722                 elsif (/^--with-zlib-include=(.*)$/)
 723                         {
 724                         $withargs{zlib_include}=$1;
 725                         }
 726                 elsif (/^--with-fuzzer-lib=(.*)$/)
 727                         {
 728                         $withargs{fuzzer_lib}=$1;
 729                         }
 730                 elsif (/^--with-fuzzer-include=(.*)$/)
 731                         {
 732                         $withargs{fuzzer_include}=$1;
 733                         }
 734                 elsif (/^--cross-compile-prefix=(.*)$/)
 735                         {
 736                         $config{cross_compile_prefix}=$1;
 737                         }
 738                 elsif (/^--config=(.*)$/)
 739                         {
 740                         read_config $1;
 741                         }
 742                 elsif (/^-[lL](.*)$/ or /^-Wl,/)
 743                         {
 744                         $libs.=$_." ";
 745                         }
 746                 elsif (/^-rpath$/ or /^-R$/)
 747                         # -rpath is the OSF1 rpath flag
 748                         # -R is the old Solaris rpath flag
 749                         {
 750                         my $rpath = shift(@argvcopy) || "";
 751                         $rpath .= " " if $rpath ne "";
 752                         $libs.=$_." ".$rpath;
 753                         }
 754                 elsif (/^-static$/)
 755                         {
 756                         $libs.=$_." ";
 757                         $disabled{"dso"} = "forced";
 758                         $disabled{"pic"} = "forced";
 759                         $disabled{"shared"} = "forced";
 760                         $disabled{"threads"} = "forced";
 761                         }
 762                 elsif (/^-D(.*)$/)
 763                         {
 764                         push @user_defines, $1;
 765                         }
 766                 else    # common if (/^[-+]/), just pass down...
 767                         {
 768                         $_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
 769                         $user_cflags.=" ".$_;
 770                         }
 771                 }
 772         else
 773                 {
 774                 die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
 775                 $target=$_;
 776                 }
 777         unless ($_ eq $target || /^no-/ || /^disable-/)
 778                 {
 779                 # "no-..." follows later after implied disactivations
 780                 # have been derived.  (Don't take this too seriously,
 781                 # we really only write OPTIONS to the Makefile out of
 782                 # nostalgia.)
 783
 784                 if ($config{options} eq "")
 785                         { $config{options} = $_; }
 786                 else
 787                         { $config{options} .= " ".$_; }
 788                 }
 789
 790         if (defined($config{api}) && !exists $apitable->{$config{api}}) {
 791                 die "***** Unsupported api compatibility level: $config{api}\n",
 792         }
 793
 794         if (keys %deprecated_options)
 795                 {
 796                 warn "***** Deprecated options: ",
 797                         join(", ", keys %deprecated_options), "\n";
 798                 }
 799         if (keys %unsupported_options)
 800                 {
 801                 die "***** Unsupported options: ",
 802                         join(", ", keys %unsupported_options), "\n";
 803                 }
 804         }
 805
 806 if ($libs =~ /(^|\s)-Wl,-rpath,/
 807     && !$disabled{shared}
 808     && !($disabled{asan} && $disabled{msan} && $disabled{ubsan})) {
 809     die "***** Cannot simultaneously use -rpath, shared libraries, and\n",
 810         "***** any of asan, msan or ubsan\n";
 811 }
 812
 813 my @tocheckfor = (keys %disabled);
 814 while (@tocheckfor) {
 815     my %new_tocheckfor = ();
 816     my @cascade_copy = (@disable_cascades);
 817     while (@cascade_copy) {
 818         my ($test, $descendents) = (shift @cascade_copy, shift @cascade_copy);
 819         if (ref($test) eq "CODE" ? $test->() : defined($disabled{$test})) {
 820             foreach(grep { !defined($disabled{$_}) } @$descendents) {
 821                 $new_tocheckfor{$_} = 1; $disabled{$_} = "forced";
 822             }
 823         }
 824     }
 825     @tocheckfor = (keys %new_tocheckfor);
 826 }
 827
 828 our $die = sub { die @_; };
 829 if ($target eq "TABLE") {
 830     local $die = sub { warn @_; };
 831     foreach (sort keys %table) {
 832         print_table_entry($_, "TABLE");
 833     }
 834     exit 0;
 835 }
 836
 837 if ($target eq "LIST") {
 838     foreach (sort keys %table) {
 839         print $_,"\n" unless $table{$_}->{template};
 840     }
 841     exit 0;
 842 }
 843
 844 if ($target eq "HASH") {
 845     local $die = sub { warn @_; };
 846     print "%table = (\n";
 847     foreach (sort keys %table) {
 848         print_table_entry($_, "HASH");
 849     }
 850     exit 0;
 851 }
 852
 853 # Backward compatibility?
 854 if ($target =~ m/^CygWin32(-.*)$/) {
 855     $target = "Cygwin".$1;
 856 }
 857
 858 foreach (sort (keys %disabled))
 859         {
 860         $config{options} .= " no-$_";
 861
 862         printf "    no-%-12s %-10s", $_, "[$disabled{$_}]";
 863
 864         if (/^dso$/)
 865                 { }
 866         elsif (/^threads$/)
 867                 { }
 868         elsif (/^shared$/)
 869                 { }
 870         elsif (/^pic$/)
 871                 { }
 872         elsif (/^zlib$/)
 873                 { }
 874         elsif (/^dynamic-engine$/)
 875                 { }
 876         elsif (/^makedepend$/)
 877                 { }
 878         elsif (/^zlib-dynamic$/)
 879                 { }
 880         elsif (/^sse2$/)
 881                 { $no_sse2 = 1; }
 882         elsif (/^engine$/)
 883                 {
 884                 @{$config{dirs}} = grep !/^engines$/, @{$config{dirs}};
 885                 @{$config{sdirs}} = grep !/^engine$/, @{$config{sdirs}};
 886                 push @{$config{openssl_other_defines}}, "OPENSSL_NO_ENGINE";
 887                 print " OPENSSL_NO_ENGINE (skip engines)";
 888                 }
 889         else
 890                 {
 891                 my ($WHAT, $what);
 892
 893                 ($WHAT = $what = $_) =~ tr/[\-a-z]/[_A-Z]/;
 894
 895                 # Fix up C macro end names
 896                 $WHAT = "RMD160" if $what eq "ripemd";
 897
 898                 # fix-up crypto/directory name(s)
 899                 $what = "ripemd" if $what eq "rmd160";
 900                 $what = "whrlpool" if $what eq "whirlpool";
 901
 902                 if ($what ne "async" && $what ne "err"
 903                     && grep { $_ eq $what } @{$config{sdirs}})
 904                         {
 905                         push @{$config{openssl_algorithm_defines}}, "OPENSSL_NO_$WHAT";
 906                         @{$config{sdirs}} = grep { $_ ne $what} @{$config{sdirs}};
 907
 908                         print " OPENSSL_NO_$WHAT (skip dir)";
 909                         }
 910                 else
 911                         {
 912                         push @{$config{openssl_other_defines}}, "OPENSSL_NO_$WHAT";
 913                         print " OPENSSL_NO_$WHAT";
 914
 915                         if (/^err$/)    { push @user_defines, "OPENSSL_NO_ERR"; }
 916                         }
 917                 }
 918
 919         print "\n";
 920         }
 921
 922 print "Configuring for $target\n";
 923 # Support for legacy targets having a name starting with 'debug-'
 924 my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
 925 if ($d) {
 926     $config{build_type} = "debug";
 927
 928     # If we do not find debug-foo in the table, the target is set to foo.
 929     if (!$table{$target}) {
 930         $target = $t;
 931     }
 932 }
 933 $config{target} = $target;
 934 my %target = resolve_config($target);
 935
 936 &usage if (!%target || $target{template});
 937
 938 my %conf_files = map { $_ => 1 } (@{$target{_conf_fname_int}});
 939 $config{conf_files} = [ sort keys %conf_files ];
 940 %target = ( %{$table{DEFAULTS}}, %target );
 941
 942 $target{cxxflags}=$target{cflags} unless defined $target{cxxflags};
 943 $target{exe_extension}="";
 944 $target{exe_extension}=".exe" if ($config{target} eq "DJGPP"
 945                                   || $config{target} =~ /^(?:Cygwin|mingw)/);
 946 $target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
 947
 948 ($target{shared_extension_simple}=$target{shared_extension})
 949     =~ s|\.\$\(SHLIB_MAJOR\)\.\$\(SHLIB_MINOR\)||;
 950 $target{dso_extension}=$target{shared_extension_simple};
 951 ($target{shared_import_extension}=$target{shared_extension_simple}.".a")
 952     if ($config{target} =~ /^(?:Cygwin|mingw)/);
 953
 954
 955 $config{cross_compile_prefix} = $ENV{'CROSS_COMPILE'}
 956     if $config{cross_compile_prefix} eq "";
 957
 958 # Allow overriding the names of some tools.  USE WITH CARE
 959 # Note: only Unix cares about HASHBANGPERL...  that explains
 960 # the default string.
 961 $config{perl} =    ($^O ne "VMS" ? $^X : "perl");
 962 $config{hashbangperl} =
 963     $ENV{'HASHBANGPERL'}           || $ENV{'PERL'}     || "/usr/bin/env perl";
 964 $target{cc} =      $ENV{'CC'}      || $target{cc}      || "cc";
 965 $target{cxx} =     $ENV{'CXX'}     || $target{cxx}     || "c++";
 966 $target{ranlib} =  $ENV{'RANLIB'}  || $target{ranlib}  ||
 967                    (which("$config{cross_compile_prefix}ranlib") ?
 968                           "\$(CROSS_COMPILE)ranlib" : "true");
 969 $target{ar} =      $ENV{'AR'}      || $target{ar}      || "ar";
 970 $target{nm} =      $ENV{'NM'}      || $target{nm}      || "nm";
 971 $target{rc} =
 972     $ENV{'RC'}  || $ENV{'WINDRES'} || $target{rc}      || "windres";
 973
 974 # Allow overriding the build file name
 975 $target{build_file} = $ENV{BUILDFILE} || $target{build_file} || "Makefile";
 976
 977 # Cache information necessary for reconfiguration
 978 $config{cc} = $target{cc};
 979 $config{cxx} = $target{cxx};
 980 $config{build_file} = $target{build_file};
 981
 982 # For cflags, lflags, plib_lflags, ex_libs and defines, add the debug_
 983 # or release_ attributes.
 984 # Do it in such a way that no spurious space is appended (hence the grep).
 985 $config{defines} = [];
 986 $config{cflags} = "";
 987 $config{cxxflags} = "";
 988 $config{ex_libs} = "";
 989 $config{shared_ldflag} = "";
 990
 991 # Make sure build_scheme is consistent.
 992 $target{build_scheme} = [ $target{build_scheme} ]
 993     if ref($target{build_scheme}) ne "ARRAY";
 994
 995 my ($builder, $builder_platform, @builder_opts) =
 996     @{$target{build_scheme}};
 997
 998 foreach my $checker (($builder_platform."-".$target{build_file}."-checker.pm",
 999                       $builder_platform."-checker.pm")) {
1000     my $checker_path = catfile($srcdir, "Configurations", $checker);
1001     if (-f $checker_path) {
1002         my $fn = $ENV{CONFIGURE_CHECKER_WARN}
1003             ? sub { warn $@; } : sub { die $@; };
1004         if (! do $checker_path) {
1005             if ($@) {
1006                 $fn->($@);
1007             } elsif ($!) {
1008                 $fn->($!);
1009             } else {
1010                 $fn->("The detected tools didn't match the platform\n");
1011             }
1012         }
1013         last;
1014     }
1015 }
1016
1017 push @{$config{defines}}, "NDEBUG"    if $config{build_type} eq "release";
1018
1019 if ($target =~ /^mingw/ && `$target{cc} --target-help 2>&1` =~ m/-mno-cygwin/m)
1020         {
1021         $config{cflags} .= " -mno-cygwin";
1022         $config{shared_ldflag} .= " -mno-cygwin";
1023         }
1024
1025 if ($target =~ /linux.*-mips/ && !$disabled{asm} && $user_cflags !~ /-m(ips|arch=)/) {
1026         # minimally required architecture flags for assembly modules
1027         $config{cflags}="-mips2 $config{cflags}" if ($target =~ /mips32/);
1028         $config{cflags}="-mips3 $config{cflags}" if ($target =~ /mips64/);
1029 }
1030
1031 my $no_shared_warn=0;
1032 my $no_user_cflags=0;
1033 my $no_user_defines=0;
1034
1035 # The DSO code currently always implements all functions so that no
1036 # applications will have to worry about that from a compilation point
1037 # of view. However, the "method"s may return zero unless that platform
1038 # has support compiled in for them. Currently each method is enabled
1039 # by a define "DSO_<name>" ... we translate the "dso_scheme" config
1040 # string entry into using the following logic;
1041 if (!$disabled{dso} && $target{dso_scheme} ne "")
1042         {
1043         $target{dso_scheme} =~ tr/[a-z]/[A-Z]/;
1044         if ($target{dso_scheme} eq "DLFCN")
1045                 {
1046                 unshift @{$config{defines}}, "DSO_DLFCN", "HAVE_DLFCN_H";
1047                 }
1048         elsif ($target{dso_scheme} eq "DLFCN_NO_H")
1049                 {
1050                 unshift @{$config{defines}}, "DSO_DLFCN";
1051                 }
1052         else
1053                 {
1054                 unshift @{$config{defines}}, "DSO_$target{dso_scheme}";
1055                 }
1056         }
1057
1058 $config{ex_libs}="$libs$config{ex_libs}" if ($libs ne "");
1059
1060 # If threads aren't disabled, check how possible they are
1061 unless ($disabled{threads}) {
1062     if ($auto_threads) {
1063         # Enabled by default, disable it forcibly if unavailable
1064         if ($target{thread_scheme} eq "(unknown)") {
1065             $disabled{threads} = "unavailable";
1066         }
1067     } else {
1068         # The user chose to enable threads explicitly, let's see
1069         # if there's a chance that's possible
1070         if ($target{thread_scheme} eq "(unknown)") {
1071             # If the user asked for "threads" and we don't have internal
1072             # knowledge how to do it, [s]he is expected to provide any
1073             # system-dependent compiler options that are necessary.  We
1074             # can't truly check that the given options are correct, but
1075             # we expect the user to know what [s]He is doing.
1076             if ($no_user_cflags && $no_user_defines) {
1077                 die "You asked for multi-threading support, but didn't\n"
1078                     ,"provide any system-specific compiler options\n";
1079             }
1080         }
1081     }
1082 }
1083
1084 # If threads still aren't disabled, add a C macro to ensure the source
1085 # code knows about it.  Any other flag is taken care of by the configs.
1086 unless($disabled{threads}) {
1087     foreach (("defines", "openssl_thread_defines")) {
1088         push @{$config{$_}}, "OPENSSL_THREADS";
1089     }
1090 }
1091
1092 # With "deprecated" disable all deprecated features.
1093 if (defined($disabled{"deprecated"})) {
1094         $config{api} = $maxapi;
1095 }
1096
1097 if ($target{shared_target} eq "")
1098         {
1099         $no_shared_warn = 1
1100             if (!$disabled{shared} || !$disabled{"dynamic-engine"});
1101         $disabled{shared} = "no-shared-target";
1102         $disabled{pic} = $disabled{shared} = $disabled{"dynamic-engine"} =
1103             "no-shared-target";
1104         }
1105
1106 if ($disabled{"dynamic-engine"}) {
1107         push @{$config{defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
1108         $config{dynamic_engines} = 0;
1109 } else {
1110         push @{$config{defines}}, "OPENSSL_NO_STATIC_ENGINE";
1111         $config{dynamic_engines} = 1;
1112 }
1113
1114 unless ($disabled{asan}) {
1115     $config{cflags} .= "-fsanitize=address ";
1116 }
1117
1118 unless ($disabled{ubsan}) {
1119     # -DPEDANTIC or -fnosanitize=alignment may also be required on some
1120     # platforms.
1121     $config{cflags} .= "-fsanitize=undefined -fno-sanitize-recover=all ";
1122 }
1123
1124 unless ($disabled{msan}) {
1125   $config{cflags} .= "-fsanitize=memory ";
1126 }
1127
1128 unless ($disabled{"fuzz-libfuzzer"} && $disabled{"fuzz-afl"}
1129         && $disabled{asan} && $disabled{ubsan} && $disabled{msan}) {
1130     $config{cflags} .= "-fno-omit-frame-pointer -g ";
1131 }
1132 #
1133 # Platform fix-ups
1134 #
1135
1136 # This saves the build files from having to check
1137 if ($disabled{pic})
1138         {
1139         $target{shared_cflag} = $target{shared_ldflag} =
1140                 $target{shared_rcflag} = "";
1141         }
1142 else
1143         {
1144         push @{$config{defines}}, "OPENSSL_PIC";
1145         }
1146
1147 if ($target{sys_id} ne "")
1148         {
1149         push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
1150         }
1151
1152 unless ($disabled{asm}) {
1153     $target{cpuid_asm_src}=$table{DEFAULTS}->{cpuid_asm_src} if ($config{processor} eq "386");
1154     $target{bn_asm_src} =~ s/\w+-gf2m.c// if (defined($disabled{ec2m}));
1155
1156     # bn-586 is the only one implementing bn_*_part_words
1157     push @{$config{defines}}, "OPENSSL_BN_ASM_PART_WORDS" if ($target{bn_asm_src} =~ /bn-586/);
1158     push @{$config{defines}}, "OPENSSL_IA32_SSE2" if (!$no_sse2 && $target{bn_asm_src} =~ /86/);
1159
1160     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT" if ($target{bn_asm_src} =~ /-mont/);
1161     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT5" if ($target{bn_asm_src} =~ /-mont5/);
1162     push @{$config{defines}}, "OPENSSL_BN_ASM_GF2m" if ($target{bn_asm_src} =~ /-gf2m/);
1163
1164     if ($target{sha1_asm_src}) {
1165         push @{$config{defines}}, "SHA1_ASM"   if ($target{sha1_asm_src} =~ /sx86/ || $target{sha1_asm_src} =~ /sha1/);
1166         push @{$config{defines}}, "SHA256_ASM" if ($target{sha1_asm_src} =~ /sha256/);
1167         push @{$config{defines}}, "SHA512_ASM" if ($target{sha1_asm_src} =~ /sha512/);
1168     }
1169     if ($target{rc4_asm_src} ne $table{DEFAULTS}->{rc4_asm_src}) {
1170         push @{$config{defines}}, "RC4_ASM";
1171     }
1172     if ($target{md5_asm_src}) {
1173         push @{$config{defines}}, "MD5_ASM";
1174     }
1175     $target{cast_asm_src}=$table{DEFAULTS}->{cast_asm_src} unless $disabled{pic}; # CAST assembler is not PIC
1176     if ($target{rmd160_asm_src}) {
1177         push @{$config{defines}}, "RMD160_ASM";
1178     }
1179     if ($target{aes_asm_src}) {
1180         push @{$config{defines}}, "AES_ASM" if ($target{aes_asm_src} =~ m/\baes-/);;
1181         # aes-ctr.fake is not a real file, only indication that assembler
1182         # module implements AES_ctr32_encrypt...
1183         push @{$config{defines}}, "AES_CTR_ASM" if ($target{aes_asm_src} =~ s/\s*aes-ctr\.fake//);
1184         # aes-xts.fake indicates presence of AES_xts_[en|de]crypt...
1185         push @{$config{defines}}, "AES_XTS_ASM" if ($target{aes_asm_src} =~ s/\s*aes-xts\.fake//);
1186         $target{aes_asm_src} =~ s/\s*(vpaes|aesni)-x86\.s//g if ($no_sse2);
1187         push @{$config{defines}}, "VPAES_ASM" if ($target{aes_asm_src} =~ m/vpaes/);
1188         push @{$config{defines}}, "BSAES_ASM" if ($target{aes_asm_src} =~ m/bsaes/);
1189     }
1190     if ($target{wp_asm_src} =~ /mmx/) {
1191         if ($config{processor} eq "386") {
1192             $target{wp_asm_src}=$table{DEFAULTS}->{wp_asm_src};
1193         } elsif (!$disabled{"whirlpool"}) {
1194             push @{$config{defines}}, "WHIRLPOOL_ASM";
1195         }
1196     }
1197     if ($target{modes_asm_src} =~ /ghash-/) {
1198         push @{$config{defines}}, "GHASH_ASM";
1199     }
1200     if ($target{ec_asm_src} =~ /ecp_nistz256/) {
1201         push @{$config{defines}}, "ECP_NISTZ256_ASM";
1202     }
1203     if ($target{padlock_asm_src} ne $table{DEFAULTS}->{padlock_asm_src}) {
1204         push @{$config{defines}}, "PADLOCK_ASM";
1205     }
1206     if ($target{poly1305_asm_src} ne "") {
1207         push @{$config{defines}}, "POLY1305_ASM";
1208     }
1209 }
1210
1211 my $ecc = $target{cc};
1212 if ($^O ne "VMS" && !$disabled{makedepend}) {
1213     # Is the compiler gcc or clang?  $ecc is used below to see if
1214     # error-checking can be turned on.
1215     my $ccpcc = "$config{cross_compile_prefix}$target{cc}";
1216     open(PIPE, "$ccpcc --version 2>&1 |");
1217     my $lines = 2;
1218     while ( <PIPE> ) {
1219         # Find the version number and save the major.
1220         m|(?:.*)\b(\d+)\.\d+\.\d+\b(?:.*)|;
1221         my $compiler_major = $1;
1222         # We know that GNU C version 3 and up as well as all clang
1223         # versions support dependency generation
1224         $config{makedepprog} = $ccpcc
1225             if (/clang/ || (/gcc/ && $compiler_major >= 3));
1226         $ecc = "clang" if /clang/;
1227         $ecc = "gcc" if /gcc/;
1228         last if ($config{makedepprog} || !$lines--);
1229     }
1230     close(PIPE);
1231
1232     $config{makedepprog} = which('makedepend') unless $config{makedepprog};
1233     $disabled{makedepend} = "unavailable" unless $config{makedepprog};
1234 }
1235
1236
1237
1238 # Deal with bn_ops ###################################################
1239
1240 $config{bn_ll}                  =0;
1241 $config{export_var_as_fn}       =0;
1242 my $def_int="unsigned int";
1243 $config{rc4_int}                =$def_int;
1244 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
1245
1246 my $count = 0;
1247 foreach (sort split(/\s+/,$target{bn_ops})) {
1248     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
1249     $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
1250     $config{bn_ll}=1                            if $_ eq 'BN_LLONG';
1251     $config{rc4_int}="unsigned char"            if $_ eq 'RC4_CHAR';
1252     ($config{b64l},$config{b64},$config{b32})
1253         =(0,1,0)                                if $_ eq 'SIXTY_FOUR_BIT';
1254     ($config{b64l},$config{b64},$config{b32})
1255         =(1,0,0)                                if $_ eq 'SIXTY_FOUR_BIT_LONG';
1256     ($config{b64l},$config{b64},$config{b32})
1257         =(0,0,1)                                if $_ eq 'THIRTY_TWO_BIT';
1258 }
1259 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
1260     if $count > 1;
1261
1262
1263 # Hack cflags for better warnings (dev option) #######################
1264
1265 # "Stringify" the C flags string.  This permits it to be made part of a string
1266 # and works as well on command lines.
1267 $config{cflags} =~ s/([\\\"])/\\$1/g;
1268
1269 if (defined($config{api})) {
1270     $config{openssl_api_defines} = [ "OPENSSL_MIN_API=".$apitable->{$config{api}} ];
1271     my $apiflag = sprintf("OPENSSL_API_COMPAT=%s", $apitable->{$config{api}});
1272     push @{$config{defines}}, $apiflag;
1273 }
1274
1275 if ($strict_warnings)
1276         {
1277         my $wopt;
1278         die "ERROR --strict-warnings requires gcc or clang"
1279             unless $ecc eq 'gcc' || $ecc eq 'clang';
1280         foreach $wopt (split /\s+/, $gcc_devteam_warn)
1281                 {
1282                 $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1283                 }
1284         if ($ecc eq "clang")
1285                 {
1286                 foreach $wopt (split /\s+/, $clang_devteam_warn)
1287                         {
1288                         $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1289                         }
1290                 }
1291         }
1292
1293 unless ($disabled{"crypto-mdebug-backtrace"})
1294         {
1295         foreach my $wopt (split /\s+/, $memleak_devteam_backtrace)
1296                 {
1297                 $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1298                 }
1299         if ($target =~ /^BSD-/)
1300                 {
1301                 $config{ex_libs} .= " -lexecinfo";
1302                 }
1303         }
1304
1305 if ($user_cflags ne "") { $config{cflags}="$config{cflags}$user_cflags"; $config{cxxflags}="$config{cxxflags}$user_cflags";}
1306 else                    { $no_user_cflags=1;  }
1307 if (@user_defines) { $config{defines}=[ @{$config{defines}}, @user_defines ]; }
1308 else               { $no_user_defines=1;    }
1309
1310 # ALL MODIFICATIONS TO %config and %target MUST BE DONE FROM HERE ON
1311
1312 unless ($disabled{afalgeng}) {
1313     $config{afalgeng}="";
1314     if ($target =~ m/^linux/) {
1315         my $minver = 4*10000 + 1*100 + 0;
1316         if ($config{cross_compile_prefix} eq "") {
1317             my $verstr = `uname -r`;
1318             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
1319             ($mi2) = $mi2 =~ /(\d+)/;
1320             my $ver = $ma*10000 + $mi1*100 + $mi2;
1321             if ($ver < $minver) {
1322                 $disabled{afalgeng} = "too-old-kernel";
1323             } else {
1324                 push @{$config{engdirs}}, "afalg";
1325             }
1326         } else {
1327             $disabled{afalgeng} = "cross-compiling";
1328         }
1329     } else {
1330         $disabled{afalgeng}  = "not-linux";
1331     }
1332 }
1333
1334 push @{$config{openssl_other_defines}}, "OPENSSL_NO_AFALGENG" if ($disabled{afalgeng});
1335
1336 # If we use the unified build, collect information from build.info files
1337 my %unified_info = ();
1338
1339 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
1340 if ($builder eq "unified") {
1341     use lib catdir(dirname(__FILE__),"util");
1342     use with_fallback qw(Text::Template);
1343
1344     sub cleandir {
1345         my $base = shift;
1346         my $dir = shift;
1347         my $relativeto = shift || ".";
1348
1349         $dir = catdir($base,$dir) unless isabsolute($dir);
1350
1351         # Make sure the directories we're building in exists
1352         mkpath($dir);
1353
1354         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
1355         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
1356         return $res;
1357     }
1358
1359     sub cleanfile {
1360         my $base = shift;
1361         my $file = shift;
1362         my $relativeto = shift || ".";
1363
1364         $file = catfile($base,$file) unless isabsolute($file);
1365
1366         my $d = dirname($file);
1367         my $f = basename($file);
1368
1369         # Make sure the directories we're building in exists
1370         mkpath($d);
1371
1372         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
1373         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
1374         return $res;
1375     }
1376
1377     # Store the name of the template file we will build the build file from
1378     # in %config.  This may be useful for the build file itself.
1379     my @build_file_template_names =
1380         ( $builder_platform."-".$target{build_file}.".tmpl",
1381           $target{build_file}.".tmpl" );
1382     my @build_file_templates = ();
1383
1384     # First, look in the user provided directory, if given
1385     if (defined $ENV{$local_config_envname}) {
1386         @build_file_templates =
1387             map {
1388                 if ($^O eq 'VMS') {
1389                     # VMS environment variables are logical names,
1390                     # which can be used as is
1391                     $local_config_envname . ':' . $_;
1392                 } else {
1393                     catfile($ENV{$local_config_envname}, $_);
1394                 }
1395             }
1396             @build_file_template_names;
1397     }
1398     # Then, look in our standard directory
1399     push @build_file_templates,
1400         ( map { cleanfile($srcdir, catfile("Configurations", $_), $blddir) }
1401           @build_file_template_names );
1402
1403     my $build_file_template;
1404     for $_ (@build_file_templates) {
1405         $build_file_template = $_;
1406         last if -f $build_file_template;
1407
1408         $build_file_template = undef;
1409     }
1410     if (!defined $build_file_template) {
1411         die "*** Couldn't find any of:\n", join("\n", @build_file_templates), "\n";
1412     }
1413     $config{build_file_templates}
1414       = [ $build_file_template,
1415           cleanfile($srcdir, catfile("Configurations", "common.tmpl"),
1416                     $blddir) ];
1417
1418     my @build_infos = ( [ ".", "build.info" ] );
1419     foreach (@{$config{dirs}}) {
1420         push @build_infos, [ $_, "build.info" ]
1421             if (-f catfile($srcdir, $_, "build.info"));
1422     }
1423     foreach (@{$config{sdirs}}) {
1424         push @build_infos, [ catdir("crypto", $_), "build.info" ]
1425             if (-f catfile($srcdir, "crypto", $_, "build.info"));
1426     }
1427     foreach (@{$config{engdirs}}) {
1428         push @build_infos, [ catdir("engines", $_), "build.info" ]
1429             if (-f catfile($srcdir, "engines", $_, "build.info"));
1430     }
1431     foreach (@{$config{tdirs}}) {
1432         push @build_infos, [ catdir("test", $_), "build.info" ]
1433             if (-f catfile($srcdir, "test", $_, "build.info"));
1434     }
1435
1436     $config{build_infos} = [ ];
1437
1438     foreach (@build_infos) {
1439         my $sourced = catdir($srcdir, $_->[0]);
1440         my $buildd = catdir($blddir, $_->[0]);
1441
1442         mkpath($buildd);
1443
1444         my $f = $_->[1];
1445         # The basic things we're trying to build
1446         my @programs = ();
1447         my @programs_install = ();
1448         my @libraries = ();
1449         my @libraries_install = ();
1450         my @engines = ();
1451         my @engines_install = ();
1452         my @scripts = ();
1453         my @scripts_install = ();
1454         my @extra = ();
1455         my @overrides = ();
1456         my @intermediates = ();
1457         my @rawlines = ();
1458
1459         my %ordinals = ();
1460         my %sources = ();
1461         my %shared_sources = ();
1462         my %includes = ();
1463         my %depends = ();
1464         my %renames = ();
1465         my %sharednames = ();
1466         my %generate = ();
1467
1468         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
1469         my $template = Text::Template->new(TYPE => 'FILE',
1470                                            SOURCE => catfile($sourced, $f));
1471         die "Something went wrong with $sourced/$f: $!\n" unless $template;
1472         my @text =
1473             split /^/m,
1474             $template->fill_in(HASH => { config => \%config,
1475                                          target => \%target,
1476                                          disabled => \%disabled,
1477                                          withargs => \%withargs,
1478                                          builddir => abs2rel($buildd, $blddir),
1479                                          sourcedir => abs2rel($sourced, $blddir),
1480                                          buildtop => abs2rel($blddir, $blddir),
1481                                          sourcetop => abs2rel($srcdir, $blddir) },
1482                                DELIMITERS => [ "{-", "-}" ]);
1483
1484         # The top item of this stack has the following values
1485         # -2 positive already run and we found ELSE (following ELSIF should fail)
1486         # -1 positive already run (skip until ENDIF)
1487         # 0 negatives so far (if we're at a condition, check it)
1488         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
1489         # 2 positive ELSE (following ELSIF should fail)
1490         my @skip = ();
1491         collect_information(
1492             collect_from_array([ @text ],
1493                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
1494                                                 $l1 =~ s/\\$//; $l1.$l2 }),
1495             # Info we're looking for
1496             qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
1497             => sub {
1498                 if (! @skip || $skip[$#skip] > 0) {
1499                     push @skip, !! $1;
1500                 } else {
1501                     push @skip, -1;
1502                 }
1503             },
1504             qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
1505             => sub { die "ELSIF out of scope" if ! @skip;
1506                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
1507                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
1508                      $skip[$#skip] = !! $1
1509                          if $skip[$#skip] == 0; },
1510             qr/^\s*ELSE\s*$/
1511             => sub { die "ELSE out of scope" if ! @skip;
1512                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
1513                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
1514             qr/^\s*ENDIF\s*$/
1515             => sub { die "ENDIF out of scope" if ! @skip;
1516                      pop @skip; },
1517             qr/^\s*PROGRAMS(_NO_INST)?\s*=\s*(.*)\s*$/
1518             => sub {
1519                 if (!@skip || $skip[$#skip] > 0) {
1520                     my $install = $1;
1521                     my @x = tokenize($2);
1522                     push @programs, @x;
1523                     push @programs_install, @x unless $install;
1524                 }
1525             },
1526             qr/^\s*LIBS(_NO_INST)?\s*=\s*(.*)\s*$/
1527             => sub {
1528                 if (!@skip || $skip[$#skip] > 0) {
1529                     my $install = $1;
1530                     my @x = tokenize($2);
1531                     push @libraries, @x;
1532                     push @libraries_install, @x unless $install;
1533                 }
1534             },
1535             qr/^\s*ENGINES(_NO_INST)?\s*=\s*(.*)\s*$/
1536             => sub {
1537                 if (!@skip || $skip[$#skip] > 0) {
1538                     my $install = $1;
1539                     my @x = tokenize($2);
1540                     push @engines, @x;
1541                     push @engines_install, @x unless $install;
1542                 }
1543             },
1544             qr/^\s*SCRIPTS(_NO_INST)?\s*=\s*(.*)\s*$/
1545             => sub {
1546                 if (!@skip || $skip[$#skip] > 0) {
1547                     my $install = $1;
1548                     my @x = tokenize($2);
1549                     push @scripts, @x;
1550                     push @scripts_install, @x unless $install;
1551                 }
1552             },
1553             qr/^\s*EXTRA\s*=\s*(.*)\s*$/
1554             => sub { push @extra, tokenize($1)
1555                          if !@skip || $skip[$#skip] > 0 },
1556             qr/^\s*OVERRIDES\s*=\s*(.*)\s*$/
1557             => sub { push @overrides, tokenize($1)
1558                          if !@skip || $skip[$#skip] > 0 },
1559
1560             qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
1561             => sub { push @{$ordinals{$1}}, tokenize($2)
1562                          if !@skip || $skip[$#skip] > 0 },
1563             qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1564             => sub { push @{$sources{$1}}, tokenize($2)
1565                          if !@skip || $skip[$#skip] > 0 },
1566             qr/^\s*SHARED_SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1567             => sub { push @{$shared_sources{$1}}, tokenize($2)
1568                          if !@skip || $skip[$#skip] > 0 },
1569             qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1570             => sub { push @{$includes{$1}}, tokenize($2)
1571                          if !@skip || $skip[$#skip] > 0 },
1572             qr/^\s*DEPEND\[((?:\\.|[^\\\]])*)\]\s*=\s*(.*)\s*$/
1573             => sub { push @{$depends{$1}}, tokenize($2)
1574                          if !@skip || $skip[$#skip] > 0 },
1575             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1576             => sub { push @{$generate{$1}}, $2
1577                          if !@skip || $skip[$#skip] > 0 },
1578             qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1579             => sub { push @{$renames{$1}}, tokenize($2)
1580                          if !@skip || $skip[$#skip] > 0 },
1581             qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1582             => sub { push @{$sharednames{$1}}, tokenize($2)
1583                          if !@skip || $skip[$#skip] > 0 },
1584             qr/^\s*BEGINRAW\[((?:\\.|[^\\\]])+)\]\s*$/
1585             => sub {
1586                 my $lineiterator = shift;
1587                 my $target_kind = $1;
1588                 while (defined $lineiterator->()) {
1589                     s|\R$||;
1590                     if (/^\s*ENDRAW\[((?:\\.|[^\\\]])+)\]\s*$/) {
1591                         die "ENDRAW doesn't match BEGINRAW"
1592                             if $1 ne $target_kind;
1593                         last;
1594                     }
1595                     next if @skip && $skip[$#skip] <= 0;
1596                     push @rawlines,  $_
1597                         if ($target_kind eq $target{build_file}
1598                             || $target_kind eq $target{build_file}."(".$builder_platform.")");
1599                 }
1600             },
1601             qr/^\s*(?:#.*)?$/ => sub { },
1602             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
1603             "BEFORE" => sub {
1604                 if ($buildinfo_debug) {
1605                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
1606                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1607                 }
1608             },
1609             "AFTER" => sub {
1610                 if ($buildinfo_debug) {
1611                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1612                 }
1613             },
1614             );
1615         die "runaway IF?" if (@skip);
1616
1617         foreach (keys %renames) {
1618             die "$_ renamed to more than one thing: "
1619                 ,join(" ", @{$renames{$_}}),"\n"
1620                 if scalar @{$renames{$_}} > 1;
1621             my $dest = cleanfile($buildd, $_, $blddir);
1622             my $to = cleanfile($buildd, $renames{$_}->[0], $blddir);
1623             die "$dest renamed to more than one thing: "
1624                 ,$unified_info{rename}->{$dest}, $to
1625                 unless !defined($unified_info{rename}->{$dest})
1626                 or $unified_info{rename}->{$dest} eq $to;
1627             $unified_info{rename}->{$dest} = $to;
1628         }
1629
1630         foreach (@programs) {
1631             my $program = cleanfile($buildd, $_, $blddir);
1632             if ($unified_info{rename}->{$program}) {
1633                 $program = $unified_info{rename}->{$program};
1634             }
1635             $unified_info{programs}->{$program} = 1;
1636         }
1637
1638         foreach (@programs_install) {
1639             my $program = cleanfile($buildd, $_, $blddir);
1640             if ($unified_info{rename}->{$program}) {
1641                 $program = $unified_info{rename}->{$program};
1642             }
1643             $unified_info{install}->{programs}->{$program} = 1;
1644         }
1645
1646         foreach (@libraries) {
1647             my $library = cleanfile($buildd, $_, $blddir);
1648             if ($unified_info{rename}->{$library}) {
1649                 $library = $unified_info{rename}->{$library};
1650             }
1651             $unified_info{libraries}->{$library} = 1;
1652         }
1653
1654         foreach (@libraries_install) {
1655             my $library = cleanfile($buildd, $_, $blddir);
1656             if ($unified_info{rename}->{$library}) {
1657                 $library = $unified_info{rename}->{$library};
1658             }
1659             $unified_info{install}->{libraries}->{$library} = 1;
1660         }
1661
1662         die <<"EOF" if scalar @engines and !$config{dynamic_engines};
1663 ENGINES can only be used if configured with 'dynamic-engine'.
1664 This is usually a fault in a build.info file.
1665 EOF
1666         foreach (@engines) {
1667             my $library = cleanfile($buildd, $_, $blddir);
1668             if ($unified_info{rename}->{$library}) {
1669                 $library = $unified_info{rename}->{$library};
1670             }
1671             $unified_info{engines}->{$library} = 1;
1672         }
1673
1674         foreach (@engines_install) {
1675             my $library = cleanfile($buildd, $_, $blddir);
1676             if ($unified_info{rename}->{$library}) {
1677                 $library = $unified_info{rename}->{$library};
1678             }
1679             $unified_info{install}->{engines}->{$library} = 1;
1680         }
1681
1682         foreach (@scripts) {
1683             my $script = cleanfile($buildd, $_, $blddir);
1684             if ($unified_info{rename}->{$script}) {
1685                 $script = $unified_info{rename}->{$script};
1686             }
1687             $unified_info{scripts}->{$script} = 1;
1688         }
1689
1690         foreach (@scripts_install) {
1691             my $script = cleanfile($buildd, $_, $blddir);
1692             if ($unified_info{rename}->{$script}) {
1693                 $script = $unified_info{rename}->{$script};
1694             }
1695             $unified_info{install}->{scripts}->{$script} = 1;
1696         }
1697
1698         foreach (@extra) {
1699             my $extra = cleanfile($buildd, $_, $blddir);
1700             $unified_info{extra}->{$extra} = 1;
1701         }
1702
1703         foreach (@overrides) {
1704             my $override = cleanfile($buildd, $_, $blddir);
1705             $unified_info{overrides}->{$override} = 1;
1706         }
1707
1708         push @{$unified_info{rawlines}}, @rawlines;
1709
1710         unless ($disabled{shared}) {
1711             # Check sharednames.
1712             foreach (keys %sharednames) {
1713                 my $dest = cleanfile($buildd, $_, $blddir);
1714                 if ($unified_info{rename}->{$dest}) {
1715                     $dest = $unified_info{rename}->{$dest};
1716                 }
1717                 die "shared_name for $dest with multiple values: "
1718                     ,join(" ", @{$sharednames{$_}}),"\n"
1719                     if scalar @{$sharednames{$_}} > 1;
1720                 my $to = cleanfile($buildd, $sharednames{$_}->[0], $blddir);
1721                 die "shared_name found for a library $dest that isn't defined\n"
1722                     unless $unified_info{libraries}->{$dest};
1723                 die "shared_name for $dest with multiple values: "
1724                     ,$unified_info{sharednames}->{$dest}, ", ", $to
1725                     unless !defined($unified_info{sharednames}->{$dest})
1726                     or $unified_info{sharednames}->{$dest} eq $to;
1727                 $unified_info{sharednames}->{$dest} = $to;
1728             }
1729
1730             # Additionally, we set up sharednames for libraries that don't
1731             # have any, as themselves.
1732             foreach (keys %{$unified_info{libraries}}) {
1733                 if (!defined $unified_info{sharednames}->{$_}) {
1734                     $unified_info{sharednames}->{$_} = $_
1735                 }
1736             }
1737         }
1738
1739         foreach (keys %ordinals) {
1740             my $dest = $_;
1741             my $ddest = cleanfile($buildd, $_, $blddir);
1742             if ($unified_info{rename}->{$ddest}) {
1743                 $ddest = $unified_info{rename}->{$ddest};
1744             }
1745             foreach (@{$ordinals{$dest}}) {
1746                 my %known_ordinals =
1747                     (
1748                      crypto =>
1749                      cleanfile($sourced, catfile("util", "libcrypto.num"), $blddir),
1750                      ssl =>
1751                      cleanfile($sourced, catfile("util", "libssl.num"), $blddir)
1752                     );
1753                 my $o = $known_ordinals{$_};
1754                 die "Ordinals for $ddest defined more than once\n"
1755                     if $unified_info{ordinals}->{$ddest};
1756                 $unified_info{ordinals}->{$ddest} = [ $_, $o ];
1757             }
1758         }
1759
1760         foreach (keys %sources) {
1761             my $dest = $_;
1762             my $ddest = cleanfile($buildd, $_, $blddir);
1763             if ($unified_info{rename}->{$ddest}) {
1764                 $ddest = $unified_info{rename}->{$ddest};
1765             }
1766             foreach (@{$sources{$dest}}) {
1767                 my $s = cleanfile($sourced, $_, $blddir);
1768
1769                 # If it isn't in the source tree, we assume it's generated
1770                 # in the build tree
1771                 if (! -f $s) {
1772                     $s = cleanfile($buildd, $_, $blddir);
1773                 }
1774                 # We recognise C++, C and asm files
1775                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
1776                     my $o = $_;
1777                     $o =~ s/\.[csS]$/.o/; # C and assembler
1778                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
1779                     $o = cleanfile($buildd, $o, $blddir);
1780                     $unified_info{sources}->{$ddest}->{$o} = 1;
1781                     $unified_info{sources}->{$o}->{$s} = 1;
1782                 } else {
1783                     $unified_info{sources}->{$ddest}->{$s} = 1;
1784                 }
1785             }
1786         }
1787
1788         foreach (keys %shared_sources) {
1789             my $dest = $_;
1790             my $ddest = cleanfile($buildd, $_, $blddir);
1791             if ($unified_info{rename}->{$ddest}) {
1792                 $ddest = $unified_info{rename}->{$ddest};
1793             }
1794             foreach (@{$shared_sources{$dest}}) {
1795                 my $s = cleanfile($sourced, $_, $blddir);
1796
1797                 # If it isn't in the source tree, we assume it's generated
1798                 # in the build tree
1799                 if (! -f $s) {
1800                     $s = cleanfile($buildd, $_, $blddir);
1801                 }
1802                 # We recognise C++, C and asm files
1803                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
1804                     my $o = $_;
1805                     $o =~ s/\.[csS]$/.o/; # C and assembler
1806                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
1807                     $o = cleanfile($buildd, $o, $blddir);
1808                     $unified_info{shared_sources}->{$ddest}->{$o} = 1;
1809                     $unified_info{sources}->{$o}->{$s} = 1;
1810                 } else {
1811                     die "unrecognised source file type for shared library: $s\n";
1812                 }
1813             }
1814         }
1815
1816         foreach (keys %generate) {
1817             my $dest = $_;
1818             my $ddest = cleanfile($buildd, $_, $blddir);
1819             if ($unified_info{rename}->{$ddest}) {
1820                 $ddest = $unified_info{rename}->{$ddest};
1821             }
1822             die "more than one generator for $dest: "
1823                     ,join(" ", @{$generate{$_}}),"\n"
1824                     if scalar @{$generate{$_}} > 1;
1825             my @generator = split /\s+/, $generate{$dest}->[0];
1826             $generator[0] = cleanfile($sourced, $generator[0], $blddir),
1827             $unified_info{generate}->{$ddest} = [ @generator ];
1828         }
1829
1830         foreach (keys %depends) {
1831             my $dest = $_;
1832             my $ddest = $dest eq "" ? "" : cleanfile($sourced, $_, $blddir);
1833
1834             # If the destination doesn't exist in source, it can only be
1835             # a generated file in the build tree.
1836             if ($ddest ne "" && ! -f $ddest) {
1837                 $ddest = cleanfile($buildd, $_, $blddir);
1838                 if ($unified_info{rename}->{$ddest}) {
1839                     $ddest = $unified_info{rename}->{$ddest};
1840                 }
1841             }
1842             foreach (@{$depends{$dest}}) {
1843                 my $d = cleanfile($sourced, $_, $blddir);
1844
1845                 # If we know it's generated, or assume it is because we can't
1846                 # find it in the source tree, we set file we depend on to be
1847                 # in the build tree rather than the source tree, and assume
1848                 # and that there are lines to build it in a BEGINRAW..ENDRAW
1849                 # section or in the Makefile template.
1850                 if (! -f $d
1851                     || (grep { $d eq $_ }
1852                         map { cleanfile($srcdir, $_, $blddir) }
1853                         grep { /\.h$/ } keys %{$unified_info{generate}})) {
1854                     $d = cleanfile($buildd, $_, $blddir);
1855                 }
1856                 # Take note if the file to depend on is being renamed
1857                 # Take extra care with files ending with .a, they should
1858                 # be treated without that extension, and the extension
1859                 # should be added back after treatment.
1860                 $d =~ /(\.a)?$/;
1861                 my $e = $1 // "";
1862                 $d = $`;
1863                 if ($unified_info{rename}->{$d}) {
1864                     $d = $unified_info{rename}->{$d};
1865                 }
1866                 $d .= $e;
1867                 $unified_info{depends}->{$ddest}->{$d} = 1;
1868                 # If we depend on a header file or a perl module, let's make
1869                 # sure it can get included
1870                 if ($dest ne "" && $d =~ /\.(h|pm)$/) {
1871                     my $i = dirname($d);
1872                     push @{$unified_info{includes}->{$ddest}->{source}}, $i
1873                         unless grep { $_ eq $i } @{$unified_info{includes}->{$ddest}->{source}};
1874                 }
1875             }
1876         }
1877
1878         foreach (keys %includes) {
1879             my $dest = $_;
1880             my $ddest = cleanfile($sourced, $_, $blddir);
1881
1882             # If the destination doesn't exist in source, it can only be
1883             # a generated file in the build tree.
1884             if (! -f $ddest) {
1885                 $ddest = cleanfile($buildd, $_, $blddir);
1886                 if ($unified_info{rename}->{$ddest}) {
1887                     $ddest = $unified_info{rename}->{$ddest};
1888                 }
1889             }
1890             foreach (@{$includes{$dest}}) {
1891                 my $is = cleandir($sourced, $_, $blddir);
1892                 my $ib = cleandir($buildd, $_, $blddir);
1893                 push @{$unified_info{includes}->{$ddest}->{source}}, $is
1894                     unless grep { $_ eq $is } @{$unified_info{includes}->{$ddest}->{source}};
1895                 push @{$unified_info{includes}->{$ddest}->{build}}, $ib
1896                     unless grep { $_ eq $ib } @{$unified_info{includes}->{$ddest}->{build}};
1897             }
1898         }
1899     }
1900
1901     ### Make unified_info a bit more efficient
1902     # One level structures
1903     foreach (("programs", "libraries", "engines", "scripts", "extra", "overrides")) {
1904         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
1905     }
1906     # Two level structures
1907     foreach my $l1 (("install", "sources", "shared_sources", "ldadd", "depends")) {
1908         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
1909             $unified_info{$l1}->{$l2} =
1910                 [ sort keys %{$unified_info{$l1}->{$l2}} ];
1911         }
1912     }
1913     # Includes
1914     foreach my $dest (sort keys %{$unified_info{includes}}) {
1915         if (defined($unified_info{includes}->{$dest}->{build})) {
1916             my @source_includes =
1917                 ( @{$unified_info{includes}->{$dest}->{source}} );
1918             $unified_info{includes}->{$dest} =
1919                 [ @{$unified_info{includes}->{$dest}->{build}} ];
1920             foreach my $inc (@source_includes) {
1921                 push @{$unified_info{includes}->{$dest}}, $inc
1922                     unless grep { $_ eq $inc } @{$unified_info{includes}->{$dest}};
1923             }
1924         } else {
1925             $unified_info{includes}->{$dest} =
1926                 [ @{$unified_info{includes}->{$dest}->{source}} ];
1927         }
1928     }
1929 }
1930
1931 # For the schemes that need it, we provide the old *_obj configs
1932 # from the *_asm_obj ones
1933 foreach (grep /_(asm|aux)_src$/, keys %target) {
1934     my $src = $_;
1935     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
1936     $target{$obj} = $target{$src};
1937     $target{$obj} =~ s/\.[csS]\b/.o/g; # C and assembler
1938     $target{$obj} =~ s/\.(cc|cpp)\b/_cc.o/g; # C++
1939 }
1940
1941 # Write down our configuration where it fits #########################
1942
1943 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
1944 print OUT <<"EOF";
1945 package configdata;
1946
1947 use strict;
1948 use warnings;
1949
1950 use Exporter;
1951 #use vars qw(\@ISA \@EXPORT);
1952 our \@ISA = qw(Exporter);
1953 our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables);
1954
1955 EOF
1956 print OUT "our %config = (\n";
1957 foreach (sort keys %config) {
1958     if (ref($config{$_}) eq "ARRAY") {
1959         print OUT "  ", $_, " => [ ", join(", ",
1960                                            map { quotify("perl", $_) }
1961                                            @{$config{$_}}), " ],\n";
1962     } else {
1963         print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
1964     }
1965 }
1966 print OUT <<"EOF";
1967 );
1968
1969 EOF
1970 print OUT "our %target = (\n";
1971 foreach (sort keys %target) {
1972     if (ref($target{$_}) eq "ARRAY") {
1973         print OUT "  ", $_, " => [ ", join(", ",
1974                                            map { quotify("perl", $_) }
1975                                            @{$target{$_}}), " ],\n";
1976     } else {
1977         print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
1978     }
1979 }
1980 print OUT <<"EOF";
1981 );
1982
1983 EOF
1984 print OUT "our \%available_protocols = (\n";
1985 print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
1986 print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
1987 print OUT <<"EOF";
1988 );
1989
1990 EOF
1991 print OUT "our \@disablables = (\n";
1992 foreach (@disablables) {
1993     print OUT "  ", quotify("perl", $_), ",\n";
1994 }
1995 print OUT <<"EOF";
1996 );
1997
1998 EOF
1999 print OUT "our \%disabled = (\n";
2000 foreach (sort keys %disabled) {
2001     print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
2002 }
2003 print OUT <<"EOF";
2004 );
2005
2006 EOF
2007 print OUT "our %withargs = (\n";
2008 foreach (sort keys %withargs) {
2009     if (ref($withargs{$_}) eq "ARRAY") {
2010         print OUT "  ", $_, " => [ ", join(", ",
2011                                            map { quotify("perl", $_) }
2012                                            @{$withargs{$_}}), " ],\n";
2013     } else {
2014         print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
2015     }
2016 }
2017 print OUT <<"EOF";
2018 );
2019
2020 EOF
2021 if ($builder eq "unified") {
2022     my $recurse;
2023     $recurse = sub {
2024         my $indent = shift;
2025         foreach (@_) {
2026             if (ref $_ eq "ARRAY") {
2027                 print OUT " "x$indent, "[\n";
2028                 foreach (@$_) {
2029                     $recurse->($indent + 4, $_);
2030                 }
2031                 print OUT " "x$indent, "],\n";
2032             } elsif (ref $_ eq "HASH") {
2033                 my %h = %$_;
2034                 print OUT " "x$indent, "{\n";
2035                 foreach (sort keys %h) {
2036                     if (ref $h{$_} eq "") {
2037                         print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
2038                     } else {
2039                         print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
2040                         $recurse->($indent + 8, $h{$_});
2041                     }
2042                 }
2043                 print OUT " "x$indent, "},\n";
2044             } else {
2045                 print OUT " "x$indent, quotify("perl", $_), ",\n";
2046             }
2047         }
2048     };
2049     print OUT "our %unified_info = (\n";
2050     foreach (sort keys %unified_info) {
2051         if (ref $unified_info{$_} eq "") {
2052             print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
2053         } else {
2054             print OUT " "x4, quotify("perl", $_), " =>\n";
2055             $recurse->(8, $unified_info{$_});
2056         }
2057     }
2058     print OUT <<"EOF";
2059 );
2060
2061 EOF
2062 }
2063 print OUT "1;\n";
2064 close(OUT);
2065
2066 print "\n";
2067 print "PROCESSOR     =$config{processor}\n" if $config{processor};
2068 print "PERL          =$config{perl}\n";
2069 print "PERLVERSION   =$Config{version} for $Config{archname}\n";
2070 print "HASHBANGPERL  =$config{hashbangperl}\n";
2071 print "CC            =$config{cross_compile_prefix}$target{cc}\n";
2072 print "CFLAG         =$target{cflags} $config{cflags}\n";
2073 print "CXX           =$config{cross_compile_prefix}$target{cxx}\n"
2074     if defined $target{cxx};
2075 print "CXXFLAG       =$target{cxxflags} $config{cxxflags}\n"
2076     if defined $target{cxx};
2077 print "DEFINES       =",join(" ", @{$target{defines}}, @{$config{defines}}),"\n";
2078 #print "RANLIB        =", $target{ranlib} eq '$(CROSS_COMPILE)ranlib' ?
2079 #                             "$config{cross_compile_prefix}ranlib" :
2080 #                             "$target{ranlib}", "\n";
2081 print "EX_LIBS       =$target{ex_libs} $config{ex_libs}\n";
2082
2083 my %builders = (
2084     unified => sub {
2085         run_dofile(catfile($blddir, $target{build_file}),
2086                    @{$config{build_file_templates}});
2087     },
2088     );
2089
2090 $builders{$builder}->($builder_platform, @builder_opts);
2091
2092 print <<"EOF" if ($disabled{threads} eq "unavailable");
2093
2094 The library could not be configured for supporting multi-threaded
2095 applications as the compiler options required on this system are not known.
2096 See file INSTALL for details if you need multi-threading.
2097 EOF
2098
2099 print <<"EOF" if ($no_shared_warn);
2100
2101 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
2102 platform, so we will pretend you gave the option 'no-pic', which also disables
2103 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
2104 or position independent code, please let us know (but please first make sure
2105 you have tried with a current version of OpenSSL).
2106 EOF
2107
2108 print <<"EOF" if (-f catfile($srcdir, "configdata.pm") && $srcdir ne $blddir);
2109
2110 WARNING: there are indications that another build was made in the source
2111 directory.  This build may have picked up artifacts from that build, the
2112 safest course of action is to clean the source directory and redo this
2113 configuration.
2114 EOF
2115
2116 exit(0);
2117
2118 ######################################################################
2119 #
2120 # Helpers and utility functions
2121 #
2122
2123 # Configuration file reading #########################################
2124
2125 # Note: All of the helper functions are for lazy evaluation.  They all
2126 # return a CODE ref, which will return the intended value when evaluated.
2127 # Thus, whenever there's mention of a returned value, it's about that
2128 # intended value.
2129
2130 # Helper function to implement conditional inheritance depending on the
2131 # value of $disabled{asm}.  Used in inherit_from values as follows:
2132 #
2133 #      inherit_from => [ "template", asm("asm_tmpl") ]
2134 #
2135 sub asm {
2136     my @x = @_;
2137     sub {
2138         $disabled{asm} ? () : @x;
2139     }
2140 }
2141
2142 # Helper function to implement conditional value variants, with a default
2143 # plus additional values based on the value of $config{build_type}.
2144 # Arguments are given in hash table form:
2145 #
2146 #       picker(default => "Basic string: ",
2147 #              debug   => "debug",
2148 #              release => "release")
2149 #
2150 # When configuring with --debug, the resulting string will be
2151 # "Basic string: debug", and when not, it will be "Basic string: release"
2152 #
2153 # This can be used to create variants of sets of flags according to the
2154 # build type:
2155 #
2156 #       cflags => picker(default => "-Wall",
2157 #                        debug   => "-g -O0",
2158 #                        release => "-O3")
2159 #
2160 sub picker {
2161     my %opts = @_;
2162     return sub { add($opts{default} || (),
2163                      $opts{$config{build_type}} || ())->(); }
2164 }
2165
2166 # Helper function to combine several values of different types into one.
2167 # This is useful if you want to combine a string with the result of a
2168 # lazy function, such as:
2169 #
2170 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
2171 #
2172 sub combine {
2173     my @stuff = @_;
2174     return sub { add(@stuff)->(); }
2175 }
2176
2177 # Helper function to implement conditional values depending on the value
2178 # of $disabled{threads}.  Can be used as follows:
2179 #
2180 #       cflags => combine("-Wall", threads("-pthread"))
2181 #
2182 sub threads {
2183     my @flags = @_;
2184     return sub { add($disabled{threads} ? () : @flags)->(); }
2185 }
2186
2187
2188
2189 our $add_called = 0;
2190 # Helper function to implement adding values to already existing configuration
2191 # values.  It handles elements that are ARRAYs, CODEs and scalars
2192 sub _add {
2193     my $separator = shift;
2194
2195     # If there's any ARRAY in the collection of values OR the separator
2196     # is undef, we will return an ARRAY of combined values, otherwise a
2197     # string of joined values with $separator as the separator.
2198     my $found_array = !defined($separator);
2199
2200     my @values =
2201         map {
2202             my $res = $_;
2203             while (ref($res) eq "CODE") {
2204                 $res = $res->();
2205             }
2206             if (defined($res)) {
2207                 if (ref($res) eq "ARRAY") {
2208                     $found_array = 1;
2209                     @$res;
2210                 } else {
2211                     $res;
2212                 }
2213             } else {
2214                 ();
2215             }
2216     } (@_);
2217
2218     $add_called = 1;
2219
2220     if ($found_array) {
2221         [ @values ];
2222     } else {
2223         join($separator, grep { defined($_) && $_ ne "" } @values);
2224     }
2225 }
2226 sub add_before {
2227     my $separator = " ";
2228     if (ref($_[$#_]) eq "HASH") {
2229         my $opts = pop;
2230         $separator = $opts->{separator};
2231     }
2232     my @x = @_;
2233     sub { _add($separator, @x, @_) };
2234 }
2235 sub add {
2236     my $separator = " ";
2237     if (ref($_[$#_]) eq "HASH") {
2238         my $opts = pop;
2239         $separator = $opts->{separator};
2240     }
2241     my @x = @_;
2242     sub { _add($separator, @_, @x) };
2243 }
2244
2245 # configuration reader, evaluates the input file as a perl script and expects
2246 # it to fill %targets with target configurations.  Those are then added to
2247 # %table.
2248 sub read_config {
2249     my $fname = shift;
2250     open(CONFFILE, "< $fname")
2251         or die "Can't open configuration file '$fname'!\n";
2252     my $x = $/;
2253     undef $/;
2254     my $content = <CONFFILE>;
2255     $/ = $x;
2256     close(CONFFILE);
2257     my %targets = ();
2258     {
2259         # Protect certain tables from tampering
2260         local %table = %::table;
2261
2262         eval $content;
2263         warn $@ if $@;
2264     }
2265
2266     # For each target, check that it's configured with a hash table.
2267     foreach (keys %targets) {
2268         if (ref($targets{$_}) ne "HASH") {
2269             if (ref($targets{$_}) eq "") {
2270                 warn "Deprecated target configuration for $_, ignoring...\n";
2271             } else {
2272                 warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
2273             }
2274             delete $targets{$_};
2275         } else {
2276             $targets{$_}->{_conf_fname_int} = add([ $fname ]);
2277         }
2278     }
2279
2280     %table = (%table, %targets);
2281
2282 }
2283
2284 # configuration resolver.  Will only resolve all the lazy evaluation
2285 # codeblocks for the chosen target and all those it inherits from,
2286 # recursively
2287 sub resolve_config {
2288     my $target = shift;
2289     my @breadcrumbs = @_;
2290
2291 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
2292
2293     if (grep { $_ eq $target } @breadcrumbs) {
2294         die "inherit_from loop!  target backtrace:\n  "
2295             ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
2296     }
2297
2298     if (!defined($table{$target})) {
2299         warn "Warning! target $target doesn't exist!\n";
2300         return ();
2301     }
2302     # Recurse through all inheritances.  They will be resolved on the
2303     # fly, so when this operation is done, they will all just be a
2304     # bunch of attributes with string values.
2305     # What we get here, though, are keys with references to lists of
2306     # the combined values of them all.  We will deal with lists after
2307     # this stage is done.
2308     my %combined_inheritance = ();
2309     if ($table{$target}->{inherit_from}) {
2310         my @inherit_from =
2311             map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
2312         foreach (@inherit_from) {
2313             my %inherited_config = resolve_config($_, $target, @breadcrumbs);
2314
2315             # 'template' is a marker that's considered private to
2316             # the config that had it.
2317             delete $inherited_config{template};
2318
2319             foreach (keys %inherited_config) {
2320                 if (!$combined_inheritance{$_}) {
2321                     $combined_inheritance{$_} = [];
2322                 }
2323                 push @{$combined_inheritance{$_}}, $inherited_config{$_};
2324             }
2325         }
2326     }
2327
2328     # We won't need inherit_from in this target any more, since we've
2329     # resolved all the inheritances that lead to this
2330     delete $table{$target}->{inherit_from};
2331
2332     # Now is the time to deal with those lists.  Here's the place to
2333     # decide what shall be done with those lists, all based on the
2334     # values of the target we're currently dealing with.
2335     # - If a value is a coderef, it will be executed with the list of
2336     #   inherited values as arguments.
2337     # - If the corresponding key doesn't have a value at all or is the
2338     #   empty string, the inherited value list will be run through the
2339     #   default combiner (below), and the result becomes this target's
2340     #   value.
2341     # - Otherwise, this target's value is assumed to be a string that
2342     #   will simply override the inherited list of values.
2343     my $default_combiner = add();
2344
2345     my %all_keys =
2346         map { $_ => 1 } (keys %combined_inheritance,
2347                          keys %{$table{$target}});
2348
2349     sub process_values {
2350         my $object    = shift;
2351         my $inherited = shift;  # Always a [ list ]
2352         my $target    = shift;
2353         my $entry     = shift;
2354
2355         $add_called = 0;
2356
2357         while(ref($object) eq "CODE") {
2358             $object = $object->(@$inherited);
2359         }
2360         if (!defined($object)) {
2361             return ();
2362         }
2363         elsif (ref($object) eq "ARRAY") {
2364             local $add_called;  # To make sure recursive calls don't affect it
2365             return [ map { process_values($_, $inherited, $target, $entry) }
2366                      @$object ];
2367         } elsif (ref($object) eq "") {
2368             return $object;
2369         } else {
2370             die "cannot handle reference type ",ref($object)
2371                 ," found in target ",$target," -> ",$entry,"\n";
2372         }
2373     }
2374
2375     foreach (sort keys %all_keys) {
2376         my $previous = $combined_inheritance{$_};
2377
2378         # Current target doesn't have a value for the current key?
2379         # Assign it the default combiner, the rest of this loop body
2380         # will handle it just like any other coderef.
2381         if (!exists $table{$target}->{$_}) {
2382             $table{$target}->{$_} = $default_combiner;
2383         }
2384
2385         $table{$target}->{$_} = process_values($table{$target}->{$_},
2386                                                $combined_inheritance{$_},
2387                                                $target, $_);
2388         unless(defined($table{$target}->{$_})) {
2389             delete $table{$target}->{$_};
2390         }
2391 #        if ($extra_checks &&
2392 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
2393 #            warn "$_ got replaced in $target\n";
2394 #        }
2395     }
2396
2397     # Finally done, return the result.
2398     return %{$table{$target}};
2399 }
2400
2401 sub usage
2402         {
2403         print STDERR $usage;
2404         print STDERR "\npick os/compiler from:\n";
2405         my $j=0;
2406         my $i;
2407         my $k=0;
2408         foreach $i (sort keys %table)
2409                 {
2410                 next if $table{$i}->{template};
2411                 next if $i =~ /^debug/;
2412                 $k += length($i) + 1;
2413                 if ($k > 78)
2414                         {
2415                         print STDERR "\n";
2416                         $k=length($i);
2417                         }
2418                 print STDERR $i . " ";
2419                 }
2420         foreach $i (sort keys %table)
2421                 {
2422                 next if $table{$i}->{template};
2423                 next if $i !~ /^debug/;
2424                 $k += length($i) + 1;
2425                 if ($k > 78)
2426                         {
2427                         print STDERR "\n";
2428                         $k=length($i);
2429                         }
2430                 print STDERR $i . " ";
2431                 }
2432         print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
2433         exit(1);
2434         }
2435
2436 sub run_dofile
2437 {
2438     my $out = shift;
2439     my @templates = @_;
2440
2441     unlink $out || warn "Can't remove $out, $!"
2442         if -f $out;
2443     foreach (@templates) {
2444         die "Can't open $_, $!" unless -f $_;
2445     }
2446     my $perlcmd = (quotify("maybeshell", $config{perl}))[0];
2447     my $cmd = "$perlcmd \"-I.\" \"-Mconfigdata\" \"$dofile\" -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
2448     #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
2449     system($cmd);
2450     exit 1 if $? != 0;
2451     rename("$out.new", $out) || die "Can't rename $out.new, $!";
2452 }
2453
2454 sub which
2455 {
2456     my ($name)=@_;
2457
2458     if (eval { require IPC::Cmd; 1; }) {
2459         IPC::Cmd->import();
2460         return scalar IPC::Cmd::can_run($name);
2461     } else {
2462         # if there is $directories component in splitpath,
2463         # then it's not something to test with $PATH...
2464         return $name if (File::Spec->splitpath($name))[1];
2465
2466         foreach (File::Spec->path()) {
2467             my $fullpath = catfile($_, "$name$target{exe_extension}");
2468             if (-f $fullpath and -x $fullpath) {
2469                 return $fullpath;
2470             }
2471         }
2472     }
2473 }
2474
2475 # Configuration printer ##############################################
2476
2477 sub print_table_entry
2478 {
2479     my $target = shift;
2480     my %target = resolve_config($target);
2481     my $type = shift;
2482
2483     # Don't print the templates
2484     return if $target{template};
2485
2486     my @sequence = (
2487         "sys_id",
2488         "cc",
2489         "cflags",
2490         "defines",
2491         "unistd",
2492         "ld",
2493         "lflags",
2494         "loutflag",
2495         "plib_lflags",
2496         "ex_libs",
2497         "bn_ops",
2498         "apps_aux_src",
2499         "cpuid_asm_src",
2500         "uplink_aux_src",
2501         "bn_asm_src",
2502         "ec_asm_src",
2503         "des_asm_src",
2504         "aes_asm_src",
2505         "bf_asm_src",
2506         "md5_asm_src",
2507         "cast_asm_src",
2508         "sha1_asm_src",
2509         "rc4_asm_src",
2510         "rmd160_asm_src",
2511         "rc5_asm_src",
2512         "wp_asm_src",
2513         "cmll_asm_src",
2514         "modes_asm_src",
2515         "padlock_asm_src",
2516         "chacha_asm_src",
2517         "poly1035_asm_src",
2518         "thread_scheme",
2519         "perlasm_scheme",
2520         "dso_scheme",
2521         "shared_target",
2522         "shared_cflag",
2523         "shared_defines",
2524         "shared_ldflag",
2525         "shared_rcflag",
2526         "shared_extension",
2527         "dso_extension",
2528         "obj_extension",
2529         "exe_extension",
2530         "ranlib",
2531         "ar",
2532         "arflags",
2533         "aroutflag",
2534         "rc",
2535         "rcflags",
2536         "rcoutflag",
2537         "mt",
2538         "mtflags",
2539         "mtinflag",
2540         "mtoutflag",
2541         "multilib",
2542         "build_scheme",
2543         );
2544
2545     if ($type eq "TABLE") {
2546         print "\n";
2547         print "*** $target\n";
2548         foreach (@sequence) {
2549             if (ref($target{$_}) eq "ARRAY") {
2550                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
2551             } else {
2552                 printf "\$%-12s = %s\n", $_, $target{$_};
2553             }
2554         }
2555     } elsif ($type eq "HASH") {
2556         my $largest =
2557             length((sort { length($a) <=> length($b) } @sequence)[-1]);
2558         print "    '$target' => {\n";
2559         foreach (@sequence) {
2560             if ($target{$_}) {
2561                 if (ref($target{$_}) eq "ARRAY") {
2562                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
2563                 } else {
2564                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
2565                 }
2566             }
2567         }
2568         print "    },\n";
2569     }
2570 }
2571
2572 # Utility routines ###################################################
2573
2574 # On VMS, if the given file is a logical name, File::Spec::Functions
2575 # will consider it an absolute path.  There are cases when we want a
2576 # purely syntactic check without checking the environment.
2577 sub isabsolute {
2578     my $file = shift;
2579
2580     # On non-platforms, we just use file_name_is_absolute().
2581     return file_name_is_absolute($file) unless $^O eq "VMS";
2582
2583     # If the file spec includes a device or a directory spec,
2584     # file_name_is_absolute() is perfectly safe.
2585     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
2586
2587     # Here, we know the given file spec isn't absolute
2588     return 0;
2589 }
2590
2591 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
2592 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
2593 # realpath() requires that at least all path components except the last is an
2594 # existing directory.  On VMS, the last component of the directory spec must
2595 # exist.
2596 sub absolutedir {
2597     my $dir = shift;
2598
2599     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
2600     # will return the volume name for the device, no matter what.  Also,
2601     # it will return an incorrect directory spec if the argument is a
2602     # directory that doesn't exist.
2603     if ($^O eq "VMS") {
2604         return rel2abs($dir);
2605     }
2606
2607     # We use realpath() on Unix, since no other will properly clean out
2608     # a directory spec.
2609     use Cwd qw/realpath/;
2610
2611     return realpath($dir);
2612 }
2613
2614 sub quotify {
2615     my %processors = (
2616         perl    => sub { my $x = shift;
2617                          $x =~ s/([\\\$\@"])/\\$1/g;
2618                          return '"'.$x.'"'; },
2619         maybeshell => sub { my $x = shift;
2620                             (my $y = $x) =~ s/([\\\"])/\\$1/g;
2621                             if ($x ne $y || $x =~ m|\s|) {
2622                                 return '"'.$y.'"';
2623                             } else {
2624                                 return $x;
2625                             }
2626                         },
2627         );
2628     my $for = shift;
2629     my $processor =
2630         defined($processors{$for}) ? $processors{$for} : sub { shift; };
2631
2632     return map { $processor->($_); } @_;
2633 }
2634
2635 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
2636 # $filename is a file name to read from
2637 # $line_concat_cond_re is a regexp detecting a line continuation ending
2638 # $line_concat is a CODEref that takes care of concatenating two lines
2639 sub collect_from_file {
2640     my $filename = shift;
2641     my $line_concat_cond_re = shift;
2642     my $line_concat = shift;
2643
2644     open my $fh, $filename || die "unable to read $filename: $!\n";
2645     return sub {
2646         my $saved_line = "";
2647         $_ = "";
2648         while (<$fh>) {
2649             s|\R$||;
2650             if (defined $line_concat) {
2651                 $_ = $line_concat->($saved_line, $_);
2652                 $saved_line = "";
2653             }
2654             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
2655                 $saved_line = $_;
2656                 next;
2657             }
2658             return $_;
2659         }
2660         die "$filename ending with continuation line\n" if $_;
2661         close $fh;
2662         return undef;
2663     }
2664 }
2665
2666 # collect_from_array($array, $line_concat_cond_re, $line_concat)
2667 # $array is an ARRAYref of lines
2668 # $line_concat_cond_re is a regexp detecting a line continuation ending
2669 # $line_concat is a CODEref that takes care of concatenating two lines
2670 sub collect_from_array {
2671     my $array = shift;
2672     my $line_concat_cond_re = shift;
2673     my $line_concat = shift;
2674     my @array = (@$array);
2675
2676     return sub {
2677         my $saved_line = "";
2678         $_ = "";
2679         while (defined($_ = shift @array)) {
2680             s|\R$||;
2681             if (defined $line_concat) {
2682                 $_ = $line_concat->($saved_line, $_);
2683                 $saved_line = "";
2684             }
2685             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
2686                 $saved_line = $_;
2687                 next;
2688             }
2689             return $_;
2690         }
2691         die "input text ending with continuation line\n" if $_;
2692         return undef;
2693     }
2694 }
2695
2696 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
2697 # $lineiterator is a CODEref that delivers one line at a time.
2698 # All following arguments are regex/CODEref pairs, where the regexp detects a
2699 # line and the CODEref does something with the result of the regexp.
2700 sub collect_information {
2701     my $lineiterator = shift;
2702     my %collectors = @_;
2703
2704     while(defined($_ = $lineiterator->())) {
2705         s|\R$||;
2706         my $found = 0;
2707         if ($collectors{"BEFORE"}) {
2708             $collectors{"BEFORE"}->($_);
2709         }
2710         foreach my $re (keys %collectors) {
2711             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
2712                 $collectors{$re}->($lineiterator);
2713                 $found = 1;
2714             };
2715         }
2716         if ($collectors{"OTHERWISE"}) {
2717             $collectors{"OTHERWISE"}->($lineiterator, $_)
2718                 unless $found || !defined $collectors{"OTHERWISE"};
2719         }
2720         if ($collectors{"AFTER"}) {
2721             $collectors{"AFTER"}->($_);
2722         }
2723     }
2724 }
2725
2726 # tokenize($line)
2727 # $line is a line of text to split up into tokens
2728 # returns a list of tokens
2729 #
2730 # Tokens are divided by spaces.  If the tokens include spaces, they
2731 # have to be quoted with single or double quotes.  Double quotes
2732 # inside a double quoted token must be escaped.  Escaping is done
2733 # with backslash.
2734 # Basically, the same quoting rules apply for " and ' as in any
2735 # Unix shell.
2736 sub tokenize {
2737     my $line = my $debug_line = shift;
2738     my @result = ();
2739
2740     while ($line =~ s|^\s+||, $line ne "") {
2741         my $token = "";
2742         while ($line ne "" && $line !~ m|^\s|) {
2743             if ($line =~ m/^"((?:[^"\\]+|\\.)*)"/) {
2744                 $token .= $1;
2745                 $line = $';
2746             } elsif ($line =~ m/^'([^']*)'/) {
2747                 $token .= $1;
2748                 $line = $';
2749             } elsif ($line =~ m/^(\S+)/) {
2750                 $token .= $1;
2751                 $line = $';
2752             }
2753         }
2754         push @result, $token;
2755     }
2756
2757     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
2758         print STDERR "DEBUG[tokenize]: Parsed '$debug_line' into:\n";
2759         print STDERR "DEBUG[tokenize]: ('", join("', '", @result), "')\n";
2760     }
2761     return @result;
2762 }