Configure

   1 #! /usr/bin/env perl
   2 # -*- mode: perl; -*-
   3 # Copyright 2016 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 # 386           generate 80386 code
  64 # enable-weak-ssl-ciphers
  65 #               Enable weak ciphers that are disabled by default. This currently
  66 #               only includes RC4 based ciphers.
  67 # no-sse2       disables IA-32 SSE2 code, above option implies no-sse2
  68 # no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
  69 # -<xxx> +<xxx> compiler options are passed through
  70 # -static       while -static is also a pass-through compiler option (and
  71 #               as such is limited to environments where it's actually
  72 #               meaningful), it triggers a number configuration options,
  73 #               namely no-dso, no-pic, no-shared and no-threads. It is
  74 #               argued that the only reason to produce statically linked
  75 #               binaries (and in context it means executables linked with
  76 #               -static flag, and not just executables linked with static
  77 #               libcrypto.a) is to eliminate dependency on specific run-time,
  78 #               a.k.a. libc version. The mentioned config options are meant
  79 #               to achieve just that. Unfortunately on Linux it's impossible
  80 #               to eliminate the dependency completely for openssl executable
  81 #               because of getaddrinfo and gethostbyname calls, which can
  82 #               invoke dynamically loadable library facility anyway to meet
  83 #               the lookup requests. For this reason on Linux statically
  84 #               linked openssl executable has rather debugging value than
  85 #               production quality.
  86 #
  87 # DEBUG_SAFESTACK use type-safe stacks to enforce type-safety on stack items
  88 #               provided to stack calls. Generates unique stack functions for
  89 #               each possible stack type.
  90 # BN_LLONG      use the type 'long long' in crypto/bn/bn.h
  91 # RC4_CHAR      use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
  92 # Following are set automatically by this script
  93 #
  94 # MD5_ASM       use some extra md5 assembler,
  95 # SHA1_ASM      use some extra sha1 assembler, must define L_ENDIAN for x86
  96 # RMD160_ASM    use some extra ripemd160 assembler,
  97 # SHA256_ASM    sha256_block is implemented in assembler
  98 # SHA512_ASM    sha512_block is implemented in assembler
  99 # AES_ASM       AES_[en|de]crypt is implemented in assembler
 100
 101 # Minimum warning options... any contributions to OpenSSL should at least get
 102 # past these.
 103
 104 # DEBUG_UNUSED enables __owur (warn unused result) checks.
 105 my $gcc_devteam_warn = "-DDEBUG_UNUSED"
 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         . " -Wswitch"
 118         . " -DPEDANTIC -pedantic -Wno-long-long"
 119         . " -Wall"
 120         . " -Wsign-compare"
 121         . " -Wmissing-prototypes"
 122         . " -Wshadow"
 123         . " -Wformat"
 124         . " -Wtype-limits"
 125         . " -Werror"
 126         ;
 127
 128 # These are used in addition to $gcc_devteam_warn when the compiler is clang.
 129 # TODO(openssl-team): fix problems and investigate if (at least) the
 130 # following warnings can also be enabled:
 131 #       -Wcast-align
 132 #       -Wunreachable-code
 133 #       -Wlanguage-extension-token -- no, we use asm()
 134 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
 135 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
 136 my $clang_devteam_warn = ""
 137         . " -Qunused-arguments"
 138         . " -Wextra"
 139         . " -Wswitch -Wswitch-default"
 140         . " -Wno-unused-parameter"
 141         . " -Wno-missing-field-initializers"
 142         . " -Wno-language-extension-token"
 143         . " -Wno-extended-offsetof"
 144         . " -Wconditional-uninitialized"
 145         . " -Wincompatible-pointer-types-discards-qualifiers"
 146         . " -Wmissing-variable-declarations"
 147         ;
 148
 149 # This adds backtrace information to the memory leak info.  Is only used
 150 # when crypto-mdebug-backtrace is enabled.
 151 my $memleak_devteam_backtrace = "-rdynamic";
 152
 153 my $strict_warnings = 0;
 154
 155 # As for $BSDthreads. Idea is to maintain "collective" set of flags,
 156 # which would cover all BSD flavors. -pthread applies to them all,
 157 # but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
 158 # -lc_r, which is sufficient. FreeBSD 4.x expands it as -lc_r,
 159 # which has to be accompanied by explicit -D_THREAD_SAFE and
 160 # sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
 161 # seems to be sufficient?
 162 our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
 163
 164 #
 165 # API compatibility name to version number mapping.
 166 #
 167 my $maxapi = "1.1.0";           # API for "no-deprecated" builds
 168 my $apitable = {
 169     "1.1.0" => "0x10100000L",
 170     "1.0.0" => "0x10000000L",
 171     "0.9.8" => "0x00908000L",
 172 };
 173
 174 our %table = ();
 175 our %config = ();
 176 our %withargs = ();
 177
 178 # Forward declarations ###############################################
 179
 180 # read_config(filename)
 181 #
 182 # Reads a configuration file and populates %table with the contents
 183 # (which the configuration file places in %targets).
 184 sub read_config;
 185
 186 # resolve_config(target)
 187 #
 188 # Resolves all the late evaluations, inheritances and so on for the
 189 # chosen target and any target it inherits from.
 190 sub resolve_config;
 191
 192
 193 # Information collection #############################################
 194
 195 # Unified build supports separate build dir
 196 my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
 197 my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
 198 my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));
 199
 200 my $local_config_envname = 'OPENSSL_LOCAL_CONFIG_DIR';
 201
 202 $config{sourcedir} = abs2rel($srcdir);
 203 $config{builddir} = abs2rel($blddir);
 204
 205 # Collect reconfiguration information if needed
 206 my @argvcopy=@ARGV;
 207
 208 if (grep /^reconf(igure)?$/, @argvcopy) {
 209     if (-f "./configdata.pm") {
 210         my $file = "./configdata.pm";
 211         unless (my $return = do $file) {
 212             die "couldn't parse $file: $@" if $@;
 213             die "couldn't do $file: $!"    unless defined $return;
 214             die "couldn't run $file"       unless $return;
 215         }
 216
 217         @argvcopy = defined($configdata::config{perlargv}) ?
 218             @{$configdata::config{perlargv}} : ();
 219         die "Incorrect data to reconfigure, please do a normal configuration\n"
 220             if (grep(/^reconf/,@argvcopy));
 221         $ENV{CROSS_COMPILE} = $configdata::config{cross_compile_prefix}
 222             if defined($configdata::config{cross_compile_prefix});
 223         $ENV{CC} = $configdata::config{cc}
 224             if defined($configdata::config{cc});
 225         $ENV{CXX} = $configdata::config{cxx}
 226             if defined($configdata::config{cxx});
 227         $ENV{BUILDFILE} = $configdata::config{build_file}
 228             if defined($configdata::config{build_file});
 229         $ENV{$local_config_envname} = $configdata::config{local_config_dir}
 230             if defined($configdata::config{local_config_dir});
 231
 232         print "Reconfiguring with: ", join(" ",@argvcopy), "\n";
 233         print "    CROSS_COMPILE = ",$ENV{CROSS_COMPILE},"\n"
 234             if $ENV{CROSS_COMPILE};
 235         print "    CC = ",$ENV{CC},"\n" if $ENV{CC};
 236         print "    CXX = ",$ENV{CXX},"\n" if $ENV{CXX};
 237         print "    BUILDFILE = ",$ENV{BUILDFILE},"\n" if $ENV{BUILDFILE};
 238         print "    $local_config_envname = ",$ENV{$local_config_envname},"\n"
 239             if $ENV{$local_config_envname};
 240     } else {
 241         die "Insufficient data to reconfigure, please do a normal configuration\n";
 242     }
 243 }
 244
 245 $config{perlargv} = [ @argvcopy ];
 246
 247 # Collect version numbers
 248 $config{version} = "unknown";
 249 $config{version_num} = "unknown";
 250 $config{shlib_version_number} = "unknown";
 251 $config{shlib_version_history} = "unknown";
 252
 253 collect_information(
 254     collect_from_file(catfile($srcdir,'include/openssl/opensslv.h')),
 255     qr/OPENSSL.VERSION.TEXT.*OpenSSL (\S+) / => sub { $config{version} = $1; },
 256     qr/OPENSSL.VERSION.NUMBER.*(0x\S+)/      => sub { $config{version_num}=$1 },
 257     qr/SHLIB_VERSION_NUMBER *"([^"]+)"/      => sub { $config{shlib_version_number}=$1 },
 258     qr/SHLIB_VERSION_HISTORY *"([^"]*)"/     => sub { $config{shlib_version_history}=$1 }
 259     );
 260 if ($config{shlib_version_history} ne "") { $config{shlib_version_history} .= ":"; }
 261
 262 ($config{major}, $config{minor})
 263     = ($config{version} =~ /^([0-9]+)\.([0-9\.]+)/);
 264 ($config{shlib_major}, $config{shlib_minor})
 265     = ($config{shlib_version_number} =~ /^([0-9]+)\.([0-9\.]+)/);
 266 die "erroneous version information in opensslv.h: ",
 267     "$config{major}, $config{minor}, $config{shlib_major}, $config{shlib_minor}\n"
 268     if ($config{major} eq "" || $config{minor} eq ""
 269         || $config{shlib_major} eq "" ||  $config{shlib_minor} eq "");
 270
 271 # Collect target configurations
 272
 273 my $pattern = catfile(dirname($0), "Configurations", "*.conf");
 274 foreach (sort glob($pattern)) {
 275     &read_config($_);
 276 }
 277
 278 if (defined $ENV{$local_config_envname}) {
 279     if ($^O eq 'VMS') {
 280         # VMS environment variables are logical names,
 281         # which can be used as is
 282         $pattern = $local_config_envname . ':' . '*.conf';
 283     } else {
 284         $pattern = catfile($ENV{$local_config_envname}, '*.conf');
 285     }
 286
 287     foreach (sort glob($pattern)) {
 288         &read_config($_);
 289     }
 290 }
 291
 292
 293 print "Configuring OpenSSL version $config{version} ($config{version_num})\n";
 294
 295 $config{prefix}="";
 296 $config{openssldir}="";
 297 $config{processor}="";
 298 $config{libdir}="";
 299 $config{cross_compile_prefix}="";
 300 $config{fipslibdir}="/usr/local/ssl/fips-2.0/lib/";
 301 my $nofipscanistercheck=0;
 302 $config{baseaddr}="0xFB00000";
 303 my $auto_threads=1;    # enable threads automatically? true by default
 304 my $default_ranlib;
 305 $config{fips}=0;
 306
 307 # Top level directories to build
 308 $config{dirs} = [ "crypto", "ssl", "engines", "apps", "test", "util", "tools", "fuzz" ];
 309 # crypto/ subdirectories to build
 310 $config{sdirs} = [
 311     "objects",
 312     "md2", "md4", "md5", "sha", "mdc2", "hmac", "ripemd", "whrlpool", "poly1305", "blake2",
 313     "des", "aes", "rc2", "rc4", "rc5", "idea", "bf", "cast", "camellia", "seed", "chacha", "modes",
 314     "bn", "ec", "rsa", "dsa", "dh", "dso", "engine",
 315     "buffer", "bio", "stack", "lhash", "rand", "err",
 316     "evp", "asn1", "pem", "x509", "x509v3", "conf", "txt_db", "pkcs7", "pkcs12", "comp", "ocsp", "ui",
 317     "cms", "ts", "srp", "cmac", "ct", "async", "kdf"
 318     ];
 319 # test/ subdirectories to build
 320 $config{tdirs} = [ "ossl_shim" ];
 321
 322 # Known TLS and DTLS protocols
 323 my @tls = qw(ssl3 tls1 tls1_1 tls1_2 tls1_3);
 324 my @dtls = qw(dtls1 dtls1_2);
 325
 326 # Explicitly known options that are possible to disable.  They can
 327 # be regexps, and will be used like this: /^no-${option}$/
 328 # For developers: keep it sorted alphabetically
 329
 330 my @disablables = (
 331     "afalgeng",
 332     "asan",
 333     "asm",
 334     "async",
 335     "autoalginit",
 336     "autoerrinit",
 337     "bf",
 338     "blake2",
 339     "camellia",
 340     "capieng",
 341     "cast",
 342     "chacha",
 343     "cmac",
 344     "cms",
 345     "comp",
 346     "crypto-mdebug",
 347     "crypto-mdebug-backtrace",
 348     "ct",
 349     "deprecated",
 350     "des",
 351     "dgram",
 352     "dh",
 353     "dsa",
 354     "dso",
 355     "dtls",
 356     "dynamic-engine",
 357     "ec",
 358     "ec2m",
 359     "ecdh",
 360     "ecdsa",
 361     "ec_nistp_64_gcc_128",
 362     "egd",
 363     "engine",
 364     "err",
 365     "external-tests",
 366     "filenames",
 367     "fuzz-libfuzzer",
 368     "fuzz-afl",
 369     "gost",
 370     "heartbeats",
 371     "hw(-.+)?",
 372     "idea",
 373     "makedepend",
 374     "md2",
 375     "md4",
 376     "mdc2",
 377     "msan",
 378     "multiblock",
 379     "nextprotoneg",
 380     "ocb",
 381     "ocsp",
 382     "pic",
 383     "poly1305",
 384     "posix-io",
 385     "psk",
 386     "rc2",
 387     "rc4",
 388     "rc5",
 389     "rdrand",
 390     "rfc3779",
 391     "rmd160",
 392     "scrypt",
 393     "sctp",
 394     "seed",
 395     "shared",
 396     "sock",
 397     "srp",
 398     "srtp",
 399     "sse2",
 400     "ssl",
 401     "ssl-trace",
 402     "static-engine",
 403     "stdio",
 404     "threads",
 405     "tls",
 406     "ts",
 407     "ubsan",
 408     "ui",
 409     "unit-test",
 410     "whirlpool",
 411     "weak-ssl-ciphers",
 412     "zlib",
 413     "zlib-dynamic",
 414     );
 415 foreach my $proto ((@tls, @dtls))
 416         {
 417         push(@disablables, $proto);
 418         push(@disablables, "$proto-method");
 419         }
 420
 421 my %deprecated_disablables = (
 422     "ssl2" => undef,
 423     "buf-freelists" => undef,
 424     "ripemd" => "rmd160"
 425     );
 426
 427 # All of the following is disabled by default (RC5 was enabled before 0.9.8):
 428
 429 our %disabled = ( # "what"         => "comment"
 430                   "asan"                => "default",
 431                   "crypto-mdebug"       => "default",
 432                   "crypto-mdebug-backtrace" => "default",
 433                   "ec_nistp_64_gcc_128" => "default",
 434                   "egd"                 => "default",
 435                   "external-tests"      => "default",
 436                   "fuzz-libfuzzer"      => "default",
 437                   "fuzz-afl"            => "default",
 438                   "heartbeats"          => "default",
 439                   "md2"                 => "default",
 440                   "msan"                => "default",
 441                   "rc5"                 => "default",
 442                   "sctp"                => "default",
 443                   "ssl-trace"           => "default",
 444                   "ssl3"                => "default",
 445                   "ssl3-method"         => "default",
 446                   "ubsan"               => "default",
 447           #TODO(TLS1.3): Temporarily disabled while this is a WIP
 448                   "tls1_3"              => "default",
 449                   "unit-test"           => "default",
 450                   "weak-ssl-ciphers"    => "default",
 451                   "zlib"                => "default",
 452                   "zlib-dynamic"        => "default",
 453                 );
 454
 455 # Note: => pair form used for aesthetics, not to truly make a hash table
 456 my @disable_cascades = (
 457     # "what"            => [ "cascade", ... ]
 458     sub { $config{processor} eq "386" }
 459                         => [ "sse2" ],
 460     "ssl"               => [ "ssl3" ],
 461     "ssl3-method"       => [ "ssl3" ],
 462     "zlib"              => [ "zlib-dynamic" ],
 463     "des"               => [ "mdc2" ],
 464     "ec"                => [ "ecdsa", "ecdh" ],
 465
 466     "dgram"             => [ "dtls", "sctp" ],
 467     "sock"              => [ "dgram" ],
 468     "dtls"              => [ @dtls ],
 469
 470     # SSL 3.0, (D)TLS 1.0 and TLS 1.1 require MD5 and SHA
 471     "md5"               => [ "ssl", "tls1", "tls1_1", "dtls1" ],
 472     "sha"               => [ "ssl", "tls1", "tls1_1", "dtls1" ],
 473
 474     # Additionally, SSL 3.0 requires either RSA or DSA+DH
 475     sub { $disabled{rsa}
 476           && ($disabled{dsa} || $disabled{dh}); }
 477                         => [ "ssl" ],
 478
 479     # (D)TLS 1.0 and TLS 1.1 also require either RSA or DSA+DH
 480     # or ECDSA + ECDH.  (D)TLS 1.2 has this requirement as well.
 481     # (XXX: We don't support PSK-only builds).
 482     sub { $disabled{rsa}
 483           && ($disabled{dsa} || $disabled{dh})
 484           && ($disabled{ecdsa} || $disabled{ecdh}); }
 485                         => [ "tls1", "tls1_1", "tls1_2", "tls1_3",
 486                              "dtls1", "dtls1_2" ],
 487
 488     "tls"               => [ @tls ],
 489
 490     # SRP and HEARTBEATS require TLSEXT
 491     "tlsext"            => [ "srp", "heartbeats" ],
 492
 493     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
 494
 495     # Without DSO, we can't load dynamic engines, so don't build them dynamic
 496     "dso"               => [ "dynamic-engine" ],
 497
 498     # Without position independent code, there can be no shared libraries or DSOs
 499     "pic"               => [ "shared" ],
 500     "shared"            => [ "dynamic-engine" ],
 501     "engine"            => [ "afalgeng" ],
 502
 503     # no-autoalginit is only useful when building non-shared
 504     "autoalginit"       => [ "shared", "apps" ],
 505
 506     "stdio"             => [ "apps", "capieng" ],
 507     "apps"              => [ "tests" ],
 508     "comp"              => [ "zlib" ],
 509     sub { !$disabled{"unit-test"} } => [ "heartbeats" ],
 510
 511     sub { !$disabled{"msan"} } => [ "asm" ],
 512     );
 513
 514 # Avoid protocol support holes.  Also disable all versions below N, if version
 515 # N is disabled while N+1 is enabled.
 516 #
 517 my @list = (reverse @tls);
 518 while ((my $first, my $second) = (shift @list, shift @list)) {
 519     last unless @list;
 520     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 521                               => [ @list ] );
 522     unshift @list, $second;
 523 }
 524 my @list = (reverse @dtls);
 525 while ((my $first, my $second) = (shift @list, shift @list)) {
 526     last unless @list;
 527     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 528                               => [ @list ] );
 529     unshift @list, $second;
 530 }
 531
 532 # Explicit "no-..." options will be collected in %disabled along with the defaults.
 533 # To remove something from %disabled, use "enable-foo".
 534 # For symmetry, "disable-foo" is a synonym for "no-foo".
 535
 536 my $no_sse2=0;
 537
 538 &usage if ($#ARGV < 0);
 539
 540 my $user_cflags="";
 541 my @user_defines=();
 542 $config{openssl_api_defines}=[];
 543 $config{openssl_algorithm_defines}=[];
 544 $config{openssl_thread_defines}=[];
 545 $config{openssl_sys_defines}=[];
 546 $config{openssl_other_defines}=[];
 547 my $libs="";
 548 my $target="";
 549 $config{options}="";
 550 $config{build_type} = "release";
 551
 552 my %unsupported_options = ();
 553 my %deprecated_options = ();
 554 while (@argvcopy)
 555         {
 556         $_ = shift @argvcopy;
 557         # VMS is a case insensitive environment, and depending on settings
 558         # out of our control, we may receive options uppercased.  Let's
 559         # downcase at least the part before any equal sign.
 560         if ($^O eq "VMS")
 561                 {
 562                 s/^([^=]*)/lc($1)/e;
 563                 }
 564         s /^-no-/no-/; # some people just can't read the instructions
 565
 566         # rewrite some options in "enable-..." form
 567         s /^-?-?shared$/enable-shared/;
 568         s /^sctp$/enable-sctp/;
 569         s /^threads$/enable-threads/;
 570         s /^zlib$/enable-zlib/;
 571         s /^zlib-dynamic$/enable-zlib-dynamic/;
 572
 573         if (/^(no|disable|enable)-(.+)$/)
 574                 {
 575                 my $word = $2;
 576                 if (!exists $deprecated_disablables{$word}
 577                         && !grep { $word =~ /^${_}$/ } @disablables)
 578                         {
 579                         $unsupported_options{$_} = 1;
 580                         next;
 581                         }
 582                 }
 583         if (/^no-(.+)$/ || /^disable-(.+)$/)
 584                 {
 585                 foreach my $proto ((@tls, @dtls))
 586                         {
 587                         if ($1 eq "$proto-method")
 588                                 {
 589                                 $disabled{"$proto"} = "option($proto-method)";
 590                                 last;
 591                                 }
 592                         }
 593                 if ($1 eq "dtls")
 594                         {
 595                         foreach my $proto (@dtls)
 596                                 {
 597                                 $disabled{$proto} = "option(dtls)";
 598                                 }
 599                         $disabled{"dtls"} = "option(dtls)";
 600                         }
 601                 elsif ($1 eq "ssl")
 602                         {
 603                         # Last one of its kind
 604                         $disabled{"ssl3"} = "option(ssl)";
 605                         }
 606                 elsif ($1 eq "tls")
 607                         {
 608                         # XXX: Tests will fail if all SSL/TLS
 609                         # protocols are disabled.
 610                         foreach my $proto (@tls)
 611                                 {
 612                                 $disabled{$proto} = "option(tls)";
 613                                 }
 614                         }
 615                 elsif ($1 eq "static-engine")
 616                         {
 617                         delete $disabled{"dynamic-engine"};
 618                         }
 619                 elsif ($1 eq "dynamic-engine")
 620                         {
 621                         $disabled{"dynamic-engine"} = "option";
 622                         }
 623                 elsif (exists $deprecated_disablables{$1})
 624                         {
 625                         $deprecated_options{$_} = 1;
 626                         if (defined $deprecated_disablables{$1})
 627                                 {
 628                                 $disabled{$deprecated_disablables{$1}} = "option";
 629                                 }
 630                         }
 631                 else
 632                         {
 633                         $disabled{$1} = "option";
 634                         }
 635                 # No longer an automatic choice
 636                 $auto_threads = 0 if ($1 eq "threads");
 637                 }
 638         elsif (/^enable-(.+)$/)
 639                 {
 640                 if ($1 eq "static-engine")
 641                         {
 642                         $disabled{"dynamic-engine"} = "option";
 643                         }
 644                 elsif ($1 eq "dynamic-engine")
 645                         {
 646                         delete $disabled{"dynamic-engine"};
 647                         }
 648                 elsif ($1 eq "zlib-dynamic")
 649                         {
 650                         delete $disabled{"zlib"};
 651                         }
 652                 my $algo = $1;
 653                 delete $disabled{$algo};
 654
 655                 # No longer an automatic choice
 656                 $auto_threads = 0 if ($1 eq "threads");
 657                 }
 658         elsif (/^--strict-warnings$/)
 659                 {
 660                 $strict_warnings = 1;
 661                 }
 662         elsif (/^--debug$/)
 663                 {
 664                 $config{build_type} = "debug";
 665                 }
 666         elsif (/^--release$/)
 667                 {
 668                 $config{build_type} = "release";
 669                 }
 670         elsif (/^386$/)
 671                 { $config{processor}=386; }
 672         elsif (/^fips$/)
 673                 {
 674                 $config{fips}=1;
 675                 }
 676         elsif (/^rsaref$/)
 677                 {
 678                 # No RSAref support any more since it's not needed.
 679                 # The check for the option is there so scripts aren't
 680                 # broken
 681                 }
 682         elsif (/^nofipscanistercheck$/)
 683                 {
 684                 $config{fips} = 1;
 685                 $nofipscanistercheck = 1;
 686                 }
 687         elsif (/^[-+]/)
 688                 {
 689                 if (/^--prefix=(.*)$/)
 690                         {
 691                         $config{prefix}=$1;
 692                         die "Directory given with --prefix MUST be absolute\n"
 693                                 unless file_name_is_absolute($config{prefix});
 694                         }
 695                 elsif (/^--api=(.*)$/)
 696                         {
 697                         $config{api}=$1;
 698                         }
 699                 elsif (/^--libdir=(.*)$/)
 700                         {
 701                         $config{libdir}=$1;
 702                         }
 703                 elsif (/^--openssldir=(.*)$/)
 704                         {
 705                         $config{openssldir}=$1;
 706                         }
 707                 elsif (/^--with-zlib-lib=(.*)$/)
 708                         {
 709                         $withargs{zlib_lib}=$1;
 710                         }
 711                 elsif (/^--with-zlib-include=(.*)$/)
 712                         {
 713                         $withargs{zlib_include}=$1;
 714                         }
 715                 elsif (/^--with-fuzzer-lib=(.*)$/)
 716                         {
 717                         $withargs{fuzzer_lib}=$1;
 718                         }
 719                 elsif (/^--with-fuzzer-include=(.*)$/)
 720                         {
 721                         $withargs{fuzzer_include}=$1;
 722                         }
 723                 elsif (/^--with-fipslibdir=(.*)$/)
 724                         {
 725                         $config{fipslibdir}="$1/";
 726                         }
 727                 elsif (/^--with-baseaddr=(.*)$/)
 728                         {
 729                         $config{baseaddr}="$1";
 730                         }
 731                 elsif (/^--cross-compile-prefix=(.*)$/)
 732                         {
 733                         $config{cross_compile_prefix}=$1;
 734                         }
 735                 elsif (/^--config=(.*)$/)
 736                         {
 737                         read_config $1;
 738                         }
 739                 elsif (/^-[lL](.*)$/ or /^-Wl,/)
 740                         {
 741                         $libs.=$_." ";
 742                         }
 743                 elsif (/^-rpath$/ or /^-R$/)
 744                         # -rpath is the OSF1 rpath flag
 745                         # -R is the old Solaris rpath flag
 746                         {
 747                         my $rpath = shift(@argvcopy) || "";
 748                         $rpath .= " " if $rpath ne "";
 749                         $libs.=$_." ".$rpath;
 750                         }
 751                 elsif (/^-static$/)
 752                         {
 753                         $libs.=$_." ";
 754                         $disabled{"dso"} = "forced";
 755                         $disabled{"pic"} = "forced";
 756                         $disabled{"shared"} = "forced";
 757                         $disabled{"threads"} = "forced";
 758                         }
 759                 elsif (/^-D(.*)$/)
 760                         {
 761                         push @user_defines, $1;
 762                         }
 763                 else    # common if (/^[-+]/), just pass down...
 764                         {
 765                         $_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
 766                         $user_cflags.=" ".$_;
 767                         }
 768                 }
 769         else
 770                 {
 771                 die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
 772                 $target=$_;
 773                 }
 774         unless ($_ eq $target || /^no-/ || /^disable-/)
 775                 {
 776                 # "no-..." follows later after implied disactivations
 777                 # have been derived.  (Don't take this too seriously,
 778                 # we really only write OPTIONS to the Makefile out of
 779                 # nostalgia.)
 780
 781                 if ($config{options} eq "")
 782                         { $config{options} = $_; }
 783                 else
 784                         { $config{options} .= " ".$_; }
 785                 }
 786
 787         if (defined($config{api}) && !exists $apitable->{$config{api}}) {
 788                 die "***** Unsupported api compatibility level: $config{api}\n",
 789         }
 790
 791         if (keys %deprecated_options)
 792                 {
 793                 warn "***** Deprecated options: ",
 794                         join(", ", keys %deprecated_options), "\n";
 795                 }
 796         if (keys %unsupported_options)
 797                 {
 798                 die "***** Unsupported options: ",
 799                         join(", ", keys %unsupported_options), "\n";
 800                 }
 801         }
 802
 803 if ($libs =~ /(^|\s)-Wl,-rpath,/
 804     && !$disabled{shared}
 805     && !($disabled{asan} && $disabled{msan} && $disabled{ubsan})) {
 806     die "***** Cannot simultaneously use -rpath, shared libraries, and\n",
 807         "***** any of asan, msan or ubsan\n";
 808 }
 809
 810 if ($config{fips})
 811         {
 812         delete $disabled{"shared"} if ($disabled{"shared"} =~ /^default/);
 813         }
 814 else
 815         {
 816         @{$config{dirs}} = grep !/^fips$/, @{$config{dirs}};
 817         }
 818
 819 my @tocheckfor = (keys %disabled);
 820 while (@tocheckfor) {
 821     my %new_tocheckfor = ();
 822     my @cascade_copy = (@disable_cascades);
 823     while (@cascade_copy) {
 824         my ($test, $descendents) = (shift @cascade_copy, shift @cascade_copy);
 825         if (ref($test) eq "CODE" ? $test->() : defined($disabled{$test})) {
 826             foreach(grep { !defined($disabled{$_}) } @$descendents) {
 827                 $new_tocheckfor{$_} = 1; $disabled{$_} = "forced";
 828             }
 829         }
 830     }
 831     @tocheckfor = (keys %new_tocheckfor);
 832 }
 833
 834 our $die = sub { die @_; };
 835 if ($target eq "TABLE") {
 836     local $die = sub { warn @_; };
 837     foreach (sort keys %table) {
 838         print_table_entry($_, "TABLE");
 839     }
 840     exit 0;
 841 }
 842
 843 if ($target eq "LIST") {
 844     foreach (sort keys %table) {
 845         print $_,"\n" unless $table{$_}->{template};
 846     }
 847     exit 0;
 848 }
 849
 850 if ($target eq "HASH") {
 851     local $die = sub { warn @_; };
 852     print "%table = (\n";
 853     foreach (sort keys %table) {
 854         print_table_entry($_, "HASH");
 855     }
 856     exit 0;
 857 }
 858
 859 # Backward compatibility?
 860 if ($target =~ m/^CygWin32(-.*)$/) {
 861     $target = "Cygwin".$1;
 862 }
 863
 864 foreach (sort (keys %disabled))
 865         {
 866         $config{options} .= " no-$_";
 867
 868         printf "    no-%-12s %-10s", $_, "[$disabled{$_}]";
 869
 870         if (/^dso$/)
 871                 { }
 872         elsif (/^threads$/)
 873                 { }
 874         elsif (/^shared$/)
 875                 { }
 876         elsif (/^pic$/)
 877                 { }
 878         elsif (/^zlib$/)
 879                 { }
 880         elsif (/^dynamic-engine$/)
 881                 { }
 882         elsif (/^makedepend$/)
 883                 { }
 884         elsif (/^zlib-dynamic$/)
 885                 { }
 886         elsif (/^sse2$/)
 887                 { $no_sse2 = 1; }
 888         elsif (/^engine$/)
 889                 {
 890                 @{$config{dirs}} = grep !/^engines$/, @{$config{dirs}};
 891                 @{$config{sdirs}} = grep !/^engine$/, @{$config{sdirs}};
 892                 push @{$config{openssl_other_defines}}, "OPENSSL_NO_ENGINE";
 893                 print " OPENSSL_NO_ENGINE (skip engines)";
 894                 }
 895         else
 896                 {
 897                 my ($WHAT, $what);
 898
 899                 ($WHAT = $what = $_) =~ tr/[\-a-z]/[_A-Z]/;
 900
 901                 # Fix up C macro end names
 902                 $WHAT = "RMD160" if $what eq "ripemd";
 903
 904                 # fix-up crypto/directory name(s)
 905                 $what = "ripemd" if $what eq "rmd160";
 906                 $what = "whrlpool" if $what eq "whirlpool";
 907
 908                 if ($what ne "async" && $what ne "err"
 909                     && grep { $_ eq $what } @{$config{sdirs}})
 910                         {
 911                         push @{$config{openssl_algorithm_defines}}, "OPENSSL_NO_$WHAT";
 912                         @{$config{sdirs}} = grep { $_ ne $what} @{$config{sdirs}};
 913
 914                         print " OPENSSL_NO_$WHAT (skip dir)";
 915                         }
 916                 else
 917                         {
 918                         push @{$config{openssl_other_defines}}, "OPENSSL_NO_$WHAT";
 919                         print " OPENSSL_NO_$WHAT";
 920
 921                         if (/^err$/)    { push @user_defines, "OPENSSL_NO_ERR"; }
 922                         }
 923                 }
 924
 925         print "\n";
 926         }
 927
 928 print "Configuring for $target\n";
 929 # Support for legacy targets having a name starting with 'debug-'
 930 my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
 931 if ($d) {
 932     $config{build_type} = "debug";
 933
 934     # If we do not find debug-foo in the table, the target is set to foo.
 935     if (!$table{$target}) {
 936         $target = $t;
 937     }
 938 }
 939 $config{target} = $target;
 940 my %target = resolve_config($target);
 941
 942 &usage if (!%target || $target{template});
 943
 944 my %conf_files = map { $_ => 1 } (@{$target{_conf_fname_int}});
 945 $config{conf_files} = [ sort keys %conf_files ];
 946 %target = ( %{$table{DEFAULTS}}, %target );
 947
 948 $target{cxxflags}=$target{cflags} unless defined $target{cxxflags};
 949 $target{exe_extension}="";
 950 $target{exe_extension}=".exe" if ($config{target} eq "DJGPP"
 951                                   || $config{target} =~ /^(?:Cygwin|mingw)/);
 952 $target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
 953
 954 ($target{shared_extension_simple}=$target{shared_extension})
 955     =~ s|\.\$\(SHLIB_MAJOR\)\.\$\(SHLIB_MINOR\)||;
 956 $target{dso_extension}=$target{shared_extension_simple};
 957 ($target{shared_import_extension}=$target{shared_extension_simple}.".a")
 958     if ($config{target} =~ /^(?:Cygwin|mingw)/);
 959
 960
 961 $config{cross_compile_prefix} = $ENV{'CROSS_COMPILE'}
 962     if $config{cross_compile_prefix} eq "";
 963
 964 # Allow overriding the names of some tools.  USE WITH CARE
 965 # Note: only Unix cares about HASHBANGPERL...  that explains
 966 # the default string.
 967 $config{perl} =    ($^O ne "VMS" ? $^X : "perl");
 968 $config{hashbangperl} =
 969     $ENV{'HASHBANGPERL'}           || $ENV{'PERL'}     || "/usr/bin/env perl";
 970 $target{cc} =      $ENV{'CC'}      || $target{cc}      || "cc";
 971 $target{cxx} =     $ENV{'CXX'}     || $target{cxx}     || "c++";
 972 $target{ranlib} =  $ENV{'RANLIB'}  || $target{ranlib}  ||
 973                    (which("$config{cross_compile_prefix}ranlib") ?
 974                           "\$(CROSS_COMPILE)ranlib" : "true");
 975 $target{ar} =      $ENV{'AR'}      || $target{ar}      || "ar";
 976 $target{nm} =      $ENV{'NM'}      || $target{nm}      || "nm";
 977 $target{rc} =
 978     $ENV{'RC'}  || $ENV{'WINDRES'} || $target{rc}      || "windres";
 979
 980 # Allow overriding the build file name
 981 $target{build_file} = $ENV{BUILDFILE} || $target{build_file} || "Makefile";
 982
 983 # Cache information necessary for reconfiguration
 984 $config{cc} = $target{cc};
 985 $config{cxx} = $target{cxx};
 986 $config{build_file} = $target{build_file};
 987
 988 # For cflags, lflags, plib_lflags, ex_libs and defines, add the debug_
 989 # or release_ attributes.
 990 # Do it in such a way that no spurious space is appended (hence the grep).
 991 $config{defines} = [];
 992 $config{cflags} = "";
 993 $config{cxxflags} = "";
 994 $config{ex_libs} = "";
 995 $config{shared_ldflag} = "";
 996
 997 # Make sure build_scheme is consistent.
 998 $target{build_scheme} = [ $target{build_scheme} ]
 999     if ref($target{build_scheme}) ne "ARRAY";
1000
1001 my ($builder, $builder_platform, @builder_opts) =
1002     @{$target{build_scheme}};
1003
1004 push @{$config{defines}}, "NDEBUG"    if $config{build_type} eq "release";
1005
1006 if ($target =~ /^mingw/ && `$target{cc} --target-help 2>&1` =~ m/-mno-cygwin/m)
1007         {
1008         $config{cflags} .= " -mno-cygwin";
1009         $config{shared_ldflag} .= " -mno-cygwin";
1010         }
1011
1012 if ($target =~ /linux.*-mips/ && !$disabled{asm} && $user_cflags !~ /-m(ips|arch=)/) {
1013         # minimally required architecture flags for assembly modules
1014         $config{cflags}="-mips2 $config{cflags}" if ($target =~ /mips32/);
1015         $config{cflags}="-mips3 $config{cflags}" if ($target =~ /mips64/);
1016 }
1017
1018 my $no_shared_warn=0;
1019 my $no_user_cflags=0;
1020 my $no_user_defines=0;
1021
1022 # The DSO code currently always implements all functions so that no
1023 # applications will have to worry about that from a compilation point
1024 # of view. However, the "method"s may return zero unless that platform
1025 # has support compiled in for them. Currently each method is enabled
1026 # by a define "DSO_<name>" ... we translate the "dso_scheme" config
1027 # string entry into using the following logic;
1028 if (!$disabled{dso} && $target{dso_scheme} ne "")
1029         {
1030         $target{dso_scheme} =~ tr/[a-z]/[A-Z]/;
1031         if ($target{dso_scheme} eq "DLFCN")
1032                 {
1033                 unshift @{$config{defines}}, "DSO_DLFCN", "HAVE_DLFCN_H";
1034                 }
1035         elsif ($target{dso_scheme} eq "DLFCN_NO_H")
1036                 {
1037                 unshift @{$config{defines}}, "DSO_DLFCN";
1038                 }
1039         else
1040                 {
1041                 unshift @{$config{defines}}, "DSO_$target{dso_scheme}";
1042                 }
1043         }
1044
1045 $config{ex_libs}="$libs$config{ex_libs}" if ($libs ne "");
1046
1047 if ($disabled{asm})
1048         {
1049         if ($config{fips})
1050                 {
1051                 @{$config{defines}} = grep !/^[BL]_ENDIAN$/, @{$config{defines}};
1052                 @{$target{defines}} = grep !/^[BL]_ENDIAN$/, @{$target{defines}};
1053                 }
1054         }
1055
1056 # If threads aren't disabled, check how possible they are
1057 unless ($disabled{threads}) {
1058     if ($auto_threads) {
1059         # Enabled by default, disable it forcibly if unavailable
1060         if ($target{thread_scheme} eq "(unknown)") {
1061             $disabled{threads} = "unavailable";
1062         }
1063     } else {
1064         # The user chose to enable threads explicitly, let's see
1065         # if there's a chance that's possible
1066         if ($target{thread_scheme} eq "(unknown)") {
1067             # If the user asked for "threads" and we don't have internal
1068             # knowledge how to do it, [s]he is expected to provide any
1069             # system-dependent compiler options that are necessary.  We
1070             # can't truly check that the given options are correct, but
1071             # we expect the user to know what [s]He is doing.
1072             if ($no_user_cflags && $no_user_defines) {
1073                 die "You asked for multi-threading support, but didn't\n"
1074                     ,"provide any system-specific compiler options\n";
1075             }
1076         }
1077     }
1078 }
1079
1080 # If threads still aren't disabled, add a C macro to ensure the source
1081 # code knows about it.  Any other flag is taken care of by the configs.
1082 unless($disabled{threads}) {
1083     foreach (("defines", "openssl_thread_defines")) {
1084         push @{$config{$_}}, "OPENSSL_THREADS";
1085     }
1086 }
1087
1088 # With "deprecated" disable all deprecated features.
1089 if (defined($disabled{"deprecated"})) {
1090         $config{api} = $maxapi;
1091 }
1092
1093 if ($target{shared_target} eq "")
1094         {
1095         $no_shared_warn = 1
1096             if ((!$disabled{shared} || !$disabled{"dynamic-engine"})
1097                 && !$config{fips});
1098         $disabled{shared} = "no-shared-target";
1099         $disabled{pic} = $disabled{shared} = $disabled{"dynamic-engine"} =
1100             "no-shared-target";
1101         }
1102
1103 if ($disabled{"dynamic-engine"}) {
1104         push @{$config{defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
1105         $config{dynamic_engines} = 0;
1106 } else {
1107         push @{$config{defines}}, "OPENSSL_NO_STATIC_ENGINE";
1108         $config{dynamic_engines} = 1;
1109 }
1110
1111 unless ($disabled{"fuzz-libfuzzer"}) {
1112     $config{cflags} .= "-fsanitize-coverage=edge,indirect-calls ";
1113 }
1114
1115 unless ($disabled{asan}) {
1116     $config{cflags} .= "-fsanitize=address ";
1117 }
1118
1119 unless ($disabled{ubsan}) {
1120     # -DPEDANTIC or -fnosanitize=alignment may also be required on some
1121     # platforms.
1122     $config{cflags} .= "-fsanitize=undefined -fno-sanitize-recover=all ";
1123 }
1124
1125 unless ($disabled{msan}) {
1126   $config{cflags} .= "-fsanitize=memory ";
1127 }
1128
1129 unless ($disabled{"fuzz-libfuzzer"} && $disabled{"fuzz-afl"}
1130         && $disabled{asan} && $disabled{ubsan} && $disabled{msan}) {
1131     $config{cflags} .= "-fno-omit-frame-pointer -g ";
1132 }
1133 #
1134 # Platform fix-ups
1135 #
1136
1137 # This saves the build files from having to check
1138 if ($disabled{pic})
1139         {
1140         $target{shared_cflag} = $target{shared_ldflag} =
1141                 $target{shared_rcflag} = "";
1142         }
1143 else
1144         {
1145         push @{$config{defines}}, "OPENSSL_PIC";
1146         }
1147
1148 if ($target{sys_id} ne "")
1149         {
1150         push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
1151         }
1152
1153 unless ($disabled{asm}) {
1154     $target{cpuid_asm_src}=$table{DEFAULTS}->{cpuid_asm_src} if ($config{processor} eq "386");
1155     $target{bn_asm_src} =~ s/\w+-gf2m.c// if (defined($disabled{ec2m}));
1156
1157     # bn-586 is the only one implementing bn_*_part_words
1158     push @{$config{defines}}, "OPENSSL_BN_ASM_PART_WORDS" if ($target{bn_asm_src} =~ /bn-586/);
1159     push @{$config{defines}}, "OPENSSL_IA32_SSE2" if (!$no_sse2 && $target{bn_asm_src} =~ /86/);
1160
1161     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT" if ($target{bn_asm_src} =~ /-mont/);
1162     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT5" if ($target{bn_asm_src} =~ /-mont5/);
1163     push @{$config{defines}}, "OPENSSL_BN_ASM_GF2m" if ($target{bn_asm_src} =~ /-gf2m/);
1164
1165     if ($config{fips}) {
1166         push @{$config{openssl_other_defines}}, "OPENSSL_FIPS";
1167     }
1168
1169     if ($target{sha1_asm_src}) {
1170         push @{$config{defines}}, "SHA1_ASM"   if ($target{sha1_asm_src} =~ /sx86/ || $target{sha1_asm_src} =~ /sha1/);
1171         push @{$config{defines}}, "SHA256_ASM" if ($target{sha1_asm_src} =~ /sha256/);
1172         push @{$config{defines}}, "SHA512_ASM" if ($target{sha1_asm_src} =~ /sha512/);
1173     }
1174     if ($target{rc4_asm_src} ne $table{DEFAULTS}->{rc4_asm_src}) {
1175         push @{$config{defines}}, "RC4_ASM";
1176     }
1177     if ($target{md5_asm_src}) {
1178         push @{$config{defines}}, "MD5_ASM";
1179     }
1180     $target{cast_asm_src}=$table{DEFAULTS}->{cast_asm_src} unless $disabled{pic}; # CAST assembler is not PIC
1181     if ($target{rmd160_asm_src}) {
1182         push @{$config{defines}}, "RMD160_ASM";
1183     }
1184     if ($target{aes_asm_src}) {
1185         push @{$config{defines}}, "AES_ASM" if ($target{aes_asm_src} =~ m/\baes-/);;
1186         # aes-ctr.fake is not a real file, only indication that assembler
1187         # module implements AES_ctr32_encrypt...
1188         push @{$config{defines}}, "AES_CTR_ASM" if ($target{aes_asm_src} =~ s/\s*aes-ctr\.fake//);
1189         # aes-xts.fake indicates presence of AES_xts_[en|de]crypt...
1190         push @{$config{defines}}, "AES_XTS_ASM" if ($target{aes_asm_src} =~ s/\s*aes-xts\.fake//);
1191         $target{aes_asm_src} =~ s/\s*(vpaes|aesni)-x86\.s//g if ($no_sse2);
1192         push @{$config{defines}}, "VPAES_ASM" if ($target{aes_asm_src} =~ m/vpaes/);
1193         push @{$config{defines}}, "BSAES_ASM" if ($target{aes_asm_src} =~ m/bsaes/);
1194     }
1195     if ($target{wp_asm_src} =~ /mmx/) {
1196         if ($config{processor} eq "386") {
1197             $target{wp_asm_src}=$table{DEFAULTS}->{wp_asm_src};
1198         } elsif (!$disabled{"whirlpool"}) {
1199             push @{$config{defines}}, "WHIRLPOOL_ASM";
1200         }
1201     }
1202     if ($target{modes_asm_src} =~ /ghash-/) {
1203         push @{$config{defines}}, "GHASH_ASM";
1204     }
1205     if ($target{ec_asm_src} =~ /ecp_nistz256/) {
1206         push @{$config{defines}}, "ECP_NISTZ256_ASM";
1207     }
1208     if ($target{poly1305_asm_src} ne "") {
1209         push @{$config{defines}}, "POLY1305_ASM";
1210     }
1211 }
1212
1213 my $ecc = $target{cc};
1214 if ($^O ne "VMS" && !$disabled{makedepend}) {
1215     # Is the compiler gcc or clang?  $ecc is used below to see if
1216     # error-checking can be turned on.
1217     my $ccpcc = "$config{cross_compile_prefix}$target{cc}";
1218     open(PIPE, "$ccpcc --version 2>&1 |");
1219     my $lines = 2;
1220     while ( <PIPE> ) {
1221         # Find the version number and save the major.
1222         m|(?:.*)\b(\d+)\.\d+\.\d+\b(?:.*)|;
1223         my $compiler_major = $1;
1224         # We know that GNU C version 3 and up as well as all clang
1225         # versions support dependency generation
1226         $config{makedepprog} = $ccpcc
1227             if (/clang/ || (/gcc/ && $compiler_major >= 3));
1228         $ecc = "clang" if /clang/;
1229         $ecc = "gcc" if /gcc/;
1230         last if ($config{makedepprog} || !$lines--);
1231     }
1232     close(PIPE);
1233
1234     $config{makedepprog} = which('makedepend') unless $config{makedepprog};
1235     $disabled{makedepend} = "unavailable" unless $config{makedepprog};
1236 }
1237
1238
1239
1240 # Deal with bn_ops ###################################################
1241
1242 $config{bn_ll}                  =0;
1243 $config{export_var_as_fn}       =0;
1244 my $def_int="unsigned int";
1245 $config{rc4_int}                =$def_int;
1246 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
1247
1248 my $count = 0;
1249 foreach (sort split(/\s+/,$target{bn_ops})) {
1250     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
1251     $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
1252     $config{bn_ll}=1                            if $_ eq 'BN_LLONG';
1253     $config{rc4_int}="unsigned char"            if $_ eq 'RC4_CHAR';
1254     ($config{b64l},$config{b64},$config{b32})
1255         =(0,1,0)                                if $_ eq 'SIXTY_FOUR_BIT';
1256     ($config{b64l},$config{b64},$config{b32})
1257         =(1,0,0)                                if $_ eq 'SIXTY_FOUR_BIT_LONG';
1258     ($config{b64l},$config{b64},$config{b32})
1259         =(0,0,1)                                if $_ eq 'THIRTY_TWO_BIT';
1260 }
1261 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
1262     if $count > 1;
1263
1264
1265 # Hack cflags for better warnings (dev option) #######################
1266
1267 # "Stringify" the C flags string.  This permits it to be made part of a string
1268 # and works as well on command lines.
1269 $config{cflags} =~ s/([\\\"])/\\$1/g;
1270
1271 if (defined($config{api})) {
1272     $config{openssl_api_defines} = [ "OPENSSL_MIN_API=".$apitable->{$config{api}} ];
1273     my $apiflag = sprintf("OPENSSL_API_COMPAT=%s", $apitable->{$config{api}});
1274     push @{$config{defines}}, $apiflag;
1275 }
1276
1277 if ($strict_warnings)
1278         {
1279         my $wopt;
1280         die "ERROR --strict-warnings requires gcc or clang"
1281             unless $ecc eq 'gcc' || $ecc eq 'clang';
1282         foreach $wopt (split /\s+/, $gcc_devteam_warn)
1283                 {
1284                 $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1285                 }
1286         if ($ecc eq "clang")
1287                 {
1288                 foreach $wopt (split /\s+/, $clang_devteam_warn)
1289                         {
1290                         $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1291                         }
1292                 }
1293         }
1294
1295 unless ($disabled{"crypto-mdebug-backtrace"})
1296         {
1297         foreach my $wopt (split /\s+/, $memleak_devteam_backtrace)
1298                 {
1299                 $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1300                 }
1301         if ($target =~ /^BSD-/)
1302                 {
1303                 $config{ex_libs} .= " -lexecinfo";
1304                 }
1305         }
1306
1307 if ($user_cflags ne "") { $config{cflags}="$config{cflags}$user_cflags"; }
1308 else                    { $no_user_cflags=1;  }
1309 if (@user_defines) { $config{defines}=[ @{$config{defines}}, @user_defines ]; }
1310 else               { $no_user_defines=1;    }
1311
1312 # ALL MODIFICATIONS TO %config and %target MUST BE DONE FROM HERE ON
1313
1314 unless ($disabled{afalgeng}) {
1315     $config{afalgeng}="";
1316     if ($target =~ m/^linux/) {
1317         my $minver = 4*10000 + 1*100 + 0;
1318         if ($config{cross_compile_prefix} eq "") {
1319             my $verstr = `uname -r`;
1320             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
1321             ($mi2) = $mi2 =~ /(\d+)/;
1322             my $ver = $ma*10000 + $mi1*100 + $mi2;
1323             if ($ver < $minver) {
1324                 $disabled{afalgeng} = "too-old-kernel";
1325             } else {
1326                 push @{$config{engdirs}}, "afalg";
1327             }
1328         } else {
1329             $disabled{afalgeng} = "cross-compiling";
1330         }
1331     } else {
1332         $disabled{afalgeng}  = "not-linux";
1333     }
1334 }
1335
1336 push @{$config{openssl_other_defines}}, "OPENSSL_NO_AFALGENG" if ($disabled{afalgeng});
1337
1338 # If we use the unified build, collect information from build.info files
1339 my %unified_info = ();
1340
1341 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
1342 if ($builder eq "unified") {
1343     use lib catdir(dirname(__FILE__),"util");
1344     use with_fallback qw(Text::Template);
1345
1346     sub cleandir {
1347         my $base = shift;
1348         my $dir = shift;
1349         my $relativeto = shift || ".";
1350
1351         $dir = catdir($base,$dir) unless isabsolute($dir);
1352
1353         # Make sure the directories we're building in exists
1354         mkpath($dir);
1355
1356         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
1357         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
1358         return $res;
1359     }
1360
1361     sub cleanfile {
1362         my $base = shift;
1363         my $file = shift;
1364         my $relativeto = shift || ".";
1365
1366         $file = catfile($base,$file) unless isabsolute($file);
1367
1368         my $d = dirname($file);
1369         my $f = basename($file);
1370
1371         # Make sure the directories we're building in exists
1372         mkpath($d);
1373
1374         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
1375         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
1376         return $res;
1377     }
1378
1379     # Store the name of the template file we will build the build file from
1380     # in %config.  This may be useful for the build file itself.
1381     my @build_file_template_names =
1382         ( $builder_platform."-".$target{build_file}.".tmpl",
1383           $target{build_file}.".tmpl" );
1384     my @build_file_templates = ();
1385
1386     # First, look in the user provided directory, if given
1387     if (defined $ENV{$local_config_envname}) {
1388         @build_file_templates =
1389             map {
1390                 if ($^O eq 'VMS') {
1391                     # VMS environment variables are logical names,
1392                     # which can be used as is
1393                     $local_config_envname . ':' . $_;
1394                 } else {
1395                     catfile($ENV{$local_config_envname}, $_);
1396                 }
1397             }
1398             @build_file_template_names;
1399     }
1400     # Then, look in our standard directory
1401     push @build_file_templates,
1402         ( map { cleanfile($srcdir, catfile("Configurations", $_), $blddir) }
1403           @build_file_template_names );
1404
1405     my $build_file_template;
1406     for $_ (@build_file_templates) {
1407         $build_file_template = $_;
1408         last if -f $build_file_template;
1409
1410         $build_file_template = undef;
1411     }
1412     if (!defined $build_file_template) {
1413         die "*** Couldn't find any of:\n", join("\n", @build_file_templates), "\n";
1414     }
1415     $config{build_file_templates}
1416       = [ $build_file_template,
1417           cleanfile($srcdir, catfile("Configurations", "common.tmpl"),
1418                     $blddir) ];
1419
1420     my @build_infos = ( [ ".", "build.info" ] );
1421     foreach (@{$config{dirs}}) {
1422         push @build_infos, [ $_, "build.info" ]
1423             if (-f catfile($srcdir, $_, "build.info"));
1424     }
1425     foreach (@{$config{sdirs}}) {
1426         push @build_infos, [ catdir("crypto", $_), "build.info" ]
1427             if (-f catfile($srcdir, "crypto", $_, "build.info"));
1428     }
1429     foreach (@{$config{engdirs}}) {
1430         push @build_infos, [ catdir("engines", $_), "build.info" ]
1431             if (-f catfile($srcdir, "engines", $_, "build.info"));
1432     }
1433     foreach (@{$config{tdirs}}) {
1434         push @build_infos, [ catdir("test", $_), "build.info" ]
1435             if (-f catfile($srcdir, "test", $_, "build.info"));
1436     }
1437
1438     $config{build_infos} = [ ];
1439
1440     foreach (@build_infos) {
1441         my $sourced = catdir($srcdir, $_->[0]);
1442         my $buildd = catdir($blddir, $_->[0]);
1443
1444         mkpath($buildd);
1445
1446         my $f = $_->[1];
1447         # The basic things we're trying to build
1448         my @programs = ();
1449         my @programs_install = ();
1450         my @libraries = ();
1451         my @libraries_install = ();
1452         my @engines = ();
1453         my @engines_install = ();
1454         my @scripts = ();
1455         my @scripts_install = ();
1456         my @extra = ();
1457         my @overrides = ();
1458         my @intermediates = ();
1459         my @rawlines = ();
1460
1461         my %ordinals = ();
1462         my %sources = ();
1463         my %shared_sources = ();
1464         my %includes = ();
1465         my %depends = ();
1466         my %renames = ();
1467         my %sharednames = ();
1468         my %generate = ();
1469
1470         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
1471         my $template = Text::Template->new(TYPE => 'FILE',
1472                                            SOURCE => catfile($sourced, $f));
1473         die "Something went wrong with $sourced/$f: $!\n" unless $template;
1474         my @text =
1475             split /^/m,
1476             $template->fill_in(HASH => { config => \%config,
1477                                          target => \%target,
1478                                          disabled => \%disabled,
1479                                          withargs => \%withargs,
1480                                          builddir => abs2rel($buildd, $blddir),
1481                                          sourcedir => abs2rel($sourced, $blddir),
1482                                          buildtop => abs2rel($blddir, $blddir),
1483                                          sourcetop => abs2rel($srcdir, $blddir) },
1484                                DELIMITERS => [ "{-", "-}" ]);
1485
1486         # The top item of this stack has the following values
1487         # -2 positive already run and we found ELSE (following ELSIF should fail)
1488         # -1 positive already run (skip until ENDIF)
1489         # 0 negatives so far (if we're at a condition, check it)
1490         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
1491         # 2 positive ELSE (following ELSIF should fail)
1492         my @skip = ();
1493         collect_information(
1494             collect_from_array([ @text ],
1495                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
1496                                                 $l1 =~ s/\\$//; $l1.$l2 }),
1497             # Info we're looking for
1498             qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
1499             => sub {
1500                 if (! @skip || $skip[$#skip] > 0) {
1501                     push @skip, !! $1;
1502                 } else {
1503                     push @skip, -1;
1504                 }
1505             },
1506             qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
1507             => sub { die "ELSIF out of scope" if ! @skip;
1508                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
1509                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
1510                      $skip[$#skip] = !! $1
1511                          if $skip[$#skip] == 0; },
1512             qr/^\s*ELSE\s*$/
1513             => sub { die "ELSE out of scope" if ! @skip;
1514                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
1515                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
1516             qr/^\s*ENDIF\s*$/
1517             => sub { die "ENDIF out of scope" if ! @skip;
1518                      pop @skip; },
1519             qr/^\s*PROGRAMS(_NO_INST)?\s*=\s*(.*)\s*$/
1520             => sub {
1521                 if (!@skip || $skip[$#skip] > 0) {
1522                     my $install = $1;
1523                     my @x = tokenize($2);
1524                     push @programs, @x;
1525                     push @programs_install, @x unless $install;
1526                 }
1527             },
1528             qr/^\s*LIBS(_NO_INST)?\s*=\s*(.*)\s*$/
1529             => sub {
1530                 if (!@skip || $skip[$#skip] > 0) {
1531                     my $install = $1;
1532                     my @x = tokenize($2);
1533                     push @libraries, @x;
1534                     push @libraries_install, @x unless $install;
1535                 }
1536             },
1537             qr/^\s*ENGINES(_NO_INST)?\s*=\s*(.*)\s*$/
1538             => sub {
1539                 if (!@skip || $skip[$#skip] > 0) {
1540                     my $install = $1;
1541                     my @x = tokenize($2);
1542                     push @engines, @x;
1543                     push @engines_install, @x unless $install;
1544                 }
1545             },
1546             qr/^\s*SCRIPTS(_NO_INST)?\s*=\s*(.*)\s*$/
1547             => sub {
1548                 if (!@skip || $skip[$#skip] > 0) {
1549                     my $install = $1;
1550                     my @x = tokenize($2);
1551                     push @scripts, @x;
1552                     push @scripts_install, @x unless $install;
1553                 }
1554             },
1555             qr/^\s*EXTRA\s*=\s*(.*)\s*$/
1556             => sub { push @extra, tokenize($1)
1557                          if !@skip || $skip[$#skip] > 0 },
1558             qr/^\s*OVERRIDES\s*=\s*(.*)\s*$/
1559             => sub { push @overrides, tokenize($1)
1560                          if !@skip || $skip[$#skip] > 0 },
1561
1562             qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
1563             => sub { push @{$ordinals{$1}}, tokenize($2)
1564                          if !@skip || $skip[$#skip] > 0 },
1565             qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1566             => sub { push @{$sources{$1}}, tokenize($2)
1567                          if !@skip || $skip[$#skip] > 0 },
1568             qr/^\s*SHARED_SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1569             => sub { push @{$shared_sources{$1}}, tokenize($2)
1570                          if !@skip || $skip[$#skip] > 0 },
1571             qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1572             => sub { push @{$includes{$1}}, tokenize($2)
1573                          if !@skip || $skip[$#skip] > 0 },
1574             qr/^\s*DEPEND\[((?:\\.|[^\\\]])*)\]\s*=\s*(.*)\s*$/
1575             => sub { push @{$depends{$1}}, tokenize($2)
1576                          if !@skip || $skip[$#skip] > 0 },
1577             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1578             => sub { push @{$generate{$1}}, $2
1579                          if !@skip || $skip[$#skip] > 0 },
1580             qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1581             => sub { push @{$renames{$1}}, tokenize($2)
1582                          if !@skip || $skip[$#skip] > 0 },
1583             qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1584             => sub { push @{$sharednames{$1}}, tokenize($2)
1585                          if !@skip || $skip[$#skip] > 0 },
1586             qr/^\s*BEGINRAW\[((?:\\.|[^\\\]])+)\]\s*$/
1587             => sub {
1588                 my $lineiterator = shift;
1589                 my $target_kind = $1;
1590                 while (defined $lineiterator->()) {
1591                     s|\R$||;
1592                     if (/^\s*ENDRAW\[((?:\\.|[^\\\]])+)\]\s*$/) {
1593                         die "ENDRAW doesn't match BEGINRAW"
1594                             if $1 ne $target_kind;
1595                         last;
1596                     }
1597                     next if @skip && $skip[$#skip] <= 0;
1598                     push @rawlines,  $_
1599                         if ($target_kind eq $target{build_file}
1600                             || $target_kind eq $target{build_file}."(".$builder_platform.")");
1601                 }
1602             },
1603             qr/^\s*(?:#.*)?$/ => sub { },
1604             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
1605             "BEFORE" => sub {
1606                 if ($buildinfo_debug) {
1607                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
1608                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1609                 }
1610             },
1611             "AFTER" => sub {
1612                 if ($buildinfo_debug) {
1613                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1614                 }
1615             },
1616             );
1617         die "runaway IF?" if (@skip);
1618
1619         foreach (keys %renames) {
1620             die "$_ renamed to more than one thing: "
1621                 ,join(" ", @{$renames{$_}}),"\n"
1622                 if scalar @{$renames{$_}} > 1;
1623             my $dest = cleanfile($buildd, $_, $blddir);
1624             my $to = cleanfile($buildd, $renames{$_}->[0], $blddir);
1625             die "$dest renamed to more than one thing: "
1626                 ,$unified_info{rename}->{$dest}, $to
1627                 unless !defined($unified_info{rename}->{$dest})
1628                 or $unified_info{rename}->{$dest} eq $to;
1629             $unified_info{rename}->{$dest} = $to;
1630         }
1631
1632         foreach (@programs) {
1633             my $program = cleanfile($buildd, $_, $blddir);
1634             if ($unified_info{rename}->{$program}) {
1635                 $program = $unified_info{rename}->{$program};
1636             }
1637             $unified_info{programs}->{$program} = 1;
1638         }
1639
1640         foreach (@programs_install) {
1641             my $program = cleanfile($buildd, $_, $blddir);
1642             if ($unified_info{rename}->{$program}) {
1643                 $program = $unified_info{rename}->{$program};
1644             }
1645             $unified_info{install}->{programs}->{$program} = 1;
1646         }
1647
1648         foreach (@libraries) {
1649             my $library = cleanfile($buildd, $_, $blddir);
1650             if ($unified_info{rename}->{$library}) {
1651                 $library = $unified_info{rename}->{$library};
1652             }
1653             $unified_info{libraries}->{$library} = 1;
1654         }
1655
1656         foreach (@libraries_install) {
1657             my $library = cleanfile($buildd, $_, $blddir);
1658             if ($unified_info{rename}->{$library}) {
1659                 $library = $unified_info{rename}->{$library};
1660             }
1661             $unified_info{install}->{libraries}->{$library} = 1;
1662         }
1663
1664         die <<"EOF" if scalar @engines and !$config{dynamic_engines};
1665 ENGINES can only be used if configured with 'dynamic-engine'.
1666 This is usually a fault in a build.info file.
1667 EOF
1668         foreach (@engines) {
1669             my $library = cleanfile($buildd, $_, $blddir);
1670             if ($unified_info{rename}->{$library}) {
1671                 $library = $unified_info{rename}->{$library};
1672             }
1673             $unified_info{engines}->{$library} = 1;
1674         }
1675
1676         foreach (@engines_install) {
1677             my $library = cleanfile($buildd, $_, $blddir);
1678             if ($unified_info{rename}->{$library}) {
1679                 $library = $unified_info{rename}->{$library};
1680             }
1681             $unified_info{install}->{engines}->{$library} = 1;
1682         }
1683
1684         foreach (@scripts) {
1685             my $script = cleanfile($buildd, $_, $blddir);
1686             if ($unified_info{rename}->{$script}) {
1687                 $script = $unified_info{rename}->{$script};
1688             }
1689             $unified_info{scripts}->{$script} = 1;
1690         }
1691
1692         foreach (@scripts_install) {
1693             my $script = cleanfile($buildd, $_, $blddir);
1694             if ($unified_info{rename}->{$script}) {
1695                 $script = $unified_info{rename}->{$script};
1696             }
1697             $unified_info{install}->{scripts}->{$script} = 1;
1698         }
1699
1700         foreach (@extra) {
1701             my $extra = cleanfile($buildd, $_, $blddir);
1702             $unified_info{extra}->{$extra} = 1;
1703         }
1704
1705         foreach (@overrides) {
1706             my $override = cleanfile($buildd, $_, $blddir);
1707             $unified_info{overrides}->{$override} = 1;
1708         }
1709
1710         push @{$unified_info{rawlines}}, @rawlines;
1711
1712         unless ($disabled{shared}) {
1713             # Check sharednames.
1714             foreach (keys %sharednames) {
1715                 my $dest = cleanfile($buildd, $_, $blddir);
1716                 if ($unified_info{rename}->{$dest}) {
1717                     $dest = $unified_info{rename}->{$dest};
1718                 }
1719                 die "shared_name for $dest with multiple values: "
1720                     ,join(" ", @{$sharednames{$_}}),"\n"
1721                     if scalar @{$sharednames{$_}} > 1;
1722                 my $to = cleanfile($buildd, $sharednames{$_}->[0], $blddir);
1723                 die "shared_name found for a library $dest that isn't defined\n"
1724                     unless $unified_info{libraries}->{$dest};
1725                 die "shared_name for $dest with multiple values: "
1726                     ,$unified_info{sharednames}->{$dest}, ", ", $to
1727                     unless !defined($unified_info{sharednames}->{$dest})
1728                     or $unified_info{sharednames}->{$dest} eq $to;
1729                 $unified_info{sharednames}->{$dest} = $to;
1730             }
1731
1732             # Additionally, we set up sharednames for libraries that don't
1733             # have any, as themselves.
1734             foreach (keys %{$unified_info{libraries}}) {
1735                 if (!defined $unified_info{sharednames}->{$_}) {
1736                     $unified_info{sharednames}->{$_} = $_
1737                 }
1738             }
1739         }
1740
1741         foreach (keys %ordinals) {
1742             my $dest = $_;
1743             my $ddest = cleanfile($buildd, $_, $blddir);
1744             if ($unified_info{rename}->{$ddest}) {
1745                 $ddest = $unified_info{rename}->{$ddest};
1746             }
1747             foreach (@{$ordinals{$dest}}) {
1748                 my %known_ordinals =
1749                     (
1750                      crypto =>
1751                      cleanfile($sourced, catfile("util", "libcrypto.num"), $blddir),
1752                      ssl =>
1753                      cleanfile($sourced, catfile("util", "libssl.num"), $blddir)
1754                     );
1755                 my $o = $known_ordinals{$_};
1756                 die "Ordinals for $ddest defined more than once\n"
1757                     if $unified_info{ordinals}->{$ddest};
1758                 $unified_info{ordinals}->{$ddest} = [ $_, $o ];
1759             }
1760         }
1761
1762         foreach (keys %sources) {
1763             my $dest = $_;
1764             my $ddest = cleanfile($buildd, $_, $blddir);
1765             if ($unified_info{rename}->{$ddest}) {
1766                 $ddest = $unified_info{rename}->{$ddest};
1767             }
1768             foreach (@{$sources{$dest}}) {
1769                 my $s = cleanfile($sourced, $_, $blddir);
1770
1771                 # If it isn't in the source tree, we assume it's generated
1772                 # in the build tree
1773                 if (! -f $s) {
1774                     $s = cleanfile($buildd, $_, $blddir);
1775                 }
1776                 # We recognise C++, C and asm files
1777                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
1778                     my $o = $_;
1779                     $o =~ s/\.[csS]$/.o/; # C and assembler
1780                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
1781                     $o = cleanfile($buildd, $o, $blddir);
1782                     $unified_info{sources}->{$ddest}->{$o} = 1;
1783                     $unified_info{sources}->{$o}->{$s} = 1;
1784                 } else {
1785                     $unified_info{sources}->{$ddest}->{$s} = 1;
1786                 }
1787             }
1788         }
1789
1790         foreach (keys %shared_sources) {
1791             my $dest = $_;
1792             my $ddest = cleanfile($buildd, $_, $blddir);
1793             if ($unified_info{rename}->{$ddest}) {
1794                 $ddest = $unified_info{rename}->{$ddest};
1795             }
1796             foreach (@{$shared_sources{$dest}}) {
1797                 my $s = cleanfile($sourced, $_, $blddir);
1798
1799                 # If it isn't in the source tree, we assume it's generated
1800                 # in the build tree
1801                 if (! -f $s) {
1802                     $s = cleanfile($buildd, $_, $blddir);
1803                 }
1804                 # We recognise C++, C and asm files
1805                 if ($s =~ /\.(cc|cpp|c|s|S)$/) {
1806                     my $o = $_;
1807                     $o =~ s/\.[csS]$/.o/; # C and assembler
1808                     $o =~ s/\.(cc|cpp)$/_cc.o/; # C++
1809                     $o = cleanfile($buildd, $o, $blddir);
1810                     $unified_info{shared_sources}->{$ddest}->{$o} = 1;
1811                     $unified_info{sources}->{$o}->{$s} = 1;
1812                 } else {
1813                     die "unrecognised source file type for shared library: $s\n";
1814                 }
1815             }
1816         }
1817
1818         foreach (keys %generate) {
1819             my $dest = $_;
1820             my $ddest = cleanfile($buildd, $_, $blddir);
1821             if ($unified_info{rename}->{$ddest}) {
1822                 $ddest = $unified_info{rename}->{$ddest};
1823             }
1824             die "more than one generator for $dest: "
1825                     ,join(" ", @{$generate{$_}}),"\n"
1826                     if scalar @{$generate{$_}} > 1;
1827             my @generator = split /\s+/, $generate{$dest}->[0];
1828             $generator[0] = cleanfile($sourced, $generator[0], $blddir),
1829             $unified_info{generate}->{$ddest} = [ @generator ];
1830         }
1831
1832         foreach (keys %depends) {
1833             my $dest = $_;
1834             my $ddest = $dest eq "" ? "" : cleanfile($sourced, $_, $blddir);
1835
1836             # If the destination doesn't exist in source, it can only be
1837             # a generated file in the build tree.
1838             if ($ddest ne "" && ! -f $ddest) {
1839                 $ddest = cleanfile($buildd, $_, $blddir);
1840                 if ($unified_info{rename}->{$ddest}) {
1841                     $ddest = $unified_info{rename}->{$ddest};
1842                 }
1843             }
1844             foreach (@{$depends{$dest}}) {
1845                 my $d = cleanfile($sourced, $_, $blddir);
1846
1847                 # If we know it's generated, or assume it is because we can't
1848                 # find it in the source tree, we set file we depend on to be
1849                 # in the build tree rather than the source tree, and assume
1850                 # and that there are lines to build it in a BEGINRAW..ENDRAW
1851                 # section or in the Makefile template.
1852                 if (! -f $d
1853                     || (grep { $d eq $_ }
1854                         map { cleanfile($srcdir, $_, $blddir) }
1855                         grep { /\.h$/ } keys %{$unified_info{generate}})) {
1856                     $d = cleanfile($buildd, $_, $blddir);
1857                 }
1858                 # Take note if the file to depend on is being renamed
1859                 if ($unified_info{rename}->{$d}) {
1860                     $d = $unified_info{rename}->{$d};
1861                 }
1862                 $unified_info{depends}->{$ddest}->{$d} = 1;
1863                 # If we depend on a header file or a perl module, let's make
1864                 # sure it can get included
1865                 if ($dest ne "" && $d =~ /\.(h|pm)$/) {
1866                     my $i = dirname($d);
1867                     push @{$unified_info{includes}->{$ddest}->{source}}, $i
1868                         unless grep { $_ eq $i } @{$unified_info{includes}->{$ddest}->{source}};
1869                 }
1870             }
1871         }
1872
1873         foreach (keys %includes) {
1874             my $dest = $_;
1875             my $ddest = cleanfile($sourced, $_, $blddir);
1876
1877             # If the destination doesn't exist in source, it can only be
1878             # a generated file in the build tree.
1879             if (! -f $ddest) {
1880                 $ddest = cleanfile($buildd, $_, $blddir);
1881                 if ($unified_info{rename}->{$ddest}) {
1882                     $ddest = $unified_info{rename}->{$ddest};
1883                 }
1884             }
1885             foreach (@{$includes{$dest}}) {
1886                 my $is = cleandir($sourced, $_, $blddir);
1887                 my $ib = cleandir($buildd, $_, $blddir);
1888                 push @{$unified_info{includes}->{$ddest}->{source}}, $is
1889                     unless grep { $_ eq $is } @{$unified_info{includes}->{$ddest}->{source}};
1890                 push @{$unified_info{includes}->{$ddest}->{build}}, $ib
1891                     unless grep { $_ eq $ib } @{$unified_info{includes}->{$ddest}->{build}};
1892             }
1893         }
1894     }
1895
1896     ### Make unified_info a bit more efficient
1897     # One level structures
1898     foreach (("programs", "libraries", "engines", "scripts", "extra", "overrides")) {
1899         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
1900     }
1901     # Two level structures
1902     foreach my $l1 (("install", "sources", "shared_sources", "ldadd", "depends")) {
1903         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
1904             $unified_info{$l1}->{$l2} =
1905                 [ sort keys %{$unified_info{$l1}->{$l2}} ];
1906         }
1907     }
1908     # Includes
1909     foreach my $dest (sort keys %{$unified_info{includes}}) {
1910         if (defined($unified_info{includes}->{$dest}->{build})) {
1911             my @source_includes =
1912                 ( @{$unified_info{includes}->{$dest}->{source}} );
1913             $unified_info{includes}->{$dest} =
1914                 [ @{$unified_info{includes}->{$dest}->{build}} ];
1915             foreach my $inc (@source_includes) {
1916                 push @{$unified_info{includes}->{$dest}}, $inc
1917                     unless grep { $_ eq $inc } @{$unified_info{includes}->{$dest}};
1918             }
1919         } else {
1920             $unified_info{includes}->{$dest} =
1921                 [ @{$unified_info{includes}->{$dest}->{source}} ];
1922         }
1923     }
1924 }
1925
1926 # For the schemes that need it, we provide the old *_obj configs
1927 # from the *_asm_obj ones
1928 foreach (grep /_(asm|aux)_src$/, keys %target) {
1929     my $src = $_;
1930     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
1931     $target{$obj} = $target{$src};
1932     $target{$obj} =~ s/\.[csS]\b/.o/g; # C and assembler
1933     $target{$obj} =~ s/\.(cc|cpp)\b/_cc.o/g; # C++
1934 }
1935
1936 # Write down our configuration where it fits #########################
1937
1938 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
1939 print OUT <<"EOF";
1940 package configdata;
1941
1942 use strict;
1943 use warnings;
1944
1945 use Exporter;
1946 #use vars qw(\@ISA \@EXPORT);
1947 our \@ISA = qw(Exporter);
1948 our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables);
1949
1950 EOF
1951 print OUT "our %config = (\n";
1952 foreach (sort keys %config) {
1953     if (ref($config{$_}) eq "ARRAY") {
1954         print OUT "  ", $_, " => [ ", join(", ",
1955                                            map { quotify("perl", $_) }
1956                                            @{$config{$_}}), " ],\n";
1957     } else {
1958         print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
1959     }
1960 }
1961 print OUT <<"EOF";
1962 );
1963
1964 EOF
1965 print OUT "our %target = (\n";
1966 foreach (sort keys %target) {
1967     if (ref($target{$_}) eq "ARRAY") {
1968         print OUT "  ", $_, " => [ ", join(", ",
1969                                            map { quotify("perl", $_) }
1970                                            @{$target{$_}}), " ],\n";
1971     } else {
1972         print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
1973     }
1974 }
1975 print OUT <<"EOF";
1976 );
1977
1978 EOF
1979 print OUT "our \%available_protocols = (\n";
1980 print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
1981 print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
1982 print OUT <<"EOF";
1983 );
1984
1985 EOF
1986 print OUT "our \@disablables = (\n";
1987 foreach (@disablables) {
1988     print OUT "  ", quotify("perl", $_), ",\n";
1989 }
1990 print OUT <<"EOF";
1991 );
1992
1993 EOF
1994 print OUT "our \%disabled = (\n";
1995 foreach (sort keys %disabled) {
1996     print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
1997 }
1998 print OUT <<"EOF";
1999 );
2000
2001 EOF
2002 print OUT "our %withargs = (\n";
2003 foreach (sort keys %withargs) {
2004     if (ref($withargs{$_}) eq "ARRAY") {
2005         print OUT "  ", $_, " => [ ", join(", ",
2006                                            map { quotify("perl", $_) }
2007                                            @{$withargs{$_}}), " ],\n";
2008     } else {
2009         print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
2010     }
2011 }
2012 print OUT <<"EOF";
2013 );
2014
2015 EOF
2016 if ($builder eq "unified") {
2017     my $recurse;
2018     $recurse = sub {
2019         my $indent = shift;
2020         foreach (@_) {
2021             if (ref $_ eq "ARRAY") {
2022                 print OUT " "x$indent, "[\n";
2023                 foreach (@$_) {
2024                     $recurse->($indent + 4, $_);
2025                 }
2026                 print OUT " "x$indent, "],\n";
2027             } elsif (ref $_ eq "HASH") {
2028                 my %h = %$_;
2029                 print OUT " "x$indent, "{\n";
2030                 foreach (sort keys %h) {
2031                     if (ref $h{$_} eq "") {
2032                         print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
2033                     } else {
2034                         print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
2035                         $recurse->($indent + 8, $h{$_});
2036                     }
2037                 }
2038                 print OUT " "x$indent, "},\n";
2039             } else {
2040                 print OUT " "x$indent, quotify("perl", $_), ",\n";
2041             }
2042         }
2043     };
2044     print OUT "our %unified_info = (\n";
2045     foreach (sort keys %unified_info) {
2046         if (ref $unified_info{$_} eq "") {
2047             print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
2048         } else {
2049             print OUT " "x4, quotify("perl", $_), " =>\n";
2050             $recurse->(8, $unified_info{$_});
2051         }
2052     }
2053     print OUT <<"EOF";
2054 );
2055
2056 EOF
2057 }
2058 print OUT "1;\n";
2059 close(OUT);
2060
2061 print "\n";
2062 print "PROCESSOR     =$config{processor}\n" if $config{processor};
2063 print "PERL          =$config{perl}\n";
2064 print "PERLVERSION   =$Config{version} for $Config{archname}\n";
2065 print "HASHBANGPERL  =$config{hashbangperl}\n";
2066 print "CC            =$config{cross_compile_prefix}$target{cc}\n";
2067 print "CFLAG         =$target{cflags} $config{cflags}\n";
2068 print "CXX           =$config{cross_compile_prefix}$target{cxx}\n"
2069     if defined $target{cxx};
2070 print "CXXFLAG       =$target{cxxflags} $config{cxxflags}\n"
2071     if defined $target{cxx};
2072 print "DEFINES       =",join(" ", @{$target{defines}}, @{$config{defines}}),"\n";
2073 #print "RANLIB        =", $target{ranlib} eq '$(CROSS_COMPILE)ranlib' ?
2074 #                             "$config{cross_compile_prefix}ranlib" :
2075 #                             "$target{ranlib}", "\n";
2076 print "EX_LIBS       =$target{ex_libs} $config{ex_libs}\n";
2077
2078 my %builders = (
2079     unified => sub {
2080         run_dofile(catfile($blddir, $target{build_file}),
2081                    @{$config{build_file_templates}});
2082     },
2083     );
2084
2085 $builders{$builder}->($builder_platform, @builder_opts);
2086
2087 print <<"EOF" if ($disabled{threads} eq "unavailable");
2088
2089 The library could not be configured for supporting multi-threaded
2090 applications as the compiler options required on this system are not known.
2091 See file INSTALL for details if you need multi-threading.
2092 EOF
2093
2094 print <<"EOF" if ($no_shared_warn);
2095
2096 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
2097 platform, so we will pretend you gave the option 'no-pic', which also disables
2098 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
2099 or position independent code, please let us know (but please first make sure
2100 you have tried with a current version of OpenSSL).
2101 EOF
2102
2103 print <<"EOF" if (-f catfile($srcdir, "configdata.pm") && $srcdir ne $blddir);
2104
2105 WARNING: there are indications that another build was made in the source
2106 directory.  This build may have picked up artifacts from that build, the
2107 safest course of action is to clean the source directory and redo this
2108 configuration.
2109 EOF
2110
2111 exit(0);
2112
2113 ######################################################################
2114 #
2115 # Helpers and utility functions
2116 #
2117
2118 # Configuration file reading #########################################
2119
2120 # Note: All of the helper functions are for lazy evaluation.  They all
2121 # return a CODE ref, which will return the intended value when evaluated.
2122 # Thus, whenever there's mention of a returned value, it's about that
2123 # intended value.
2124
2125 # Helper function to implement conditional inheritance depending on the
2126 # value of $disabled{asm}.  Used in inherit_from values as follows:
2127 #
2128 #      inherit_from => [ "template", asm("asm_tmpl") ]
2129 #
2130 sub asm {
2131     my @x = @_;
2132     sub {
2133         $disabled{asm} ? () : @x;
2134     }
2135 }
2136
2137 # Helper function to implement conditional value variants, with a default
2138 # plus additional values based on the value of $config{build_type}.
2139 # Arguments are given in hash table form:
2140 #
2141 #       picker(default => "Basic string: ",
2142 #              debug   => "debug",
2143 #              release => "release")
2144 #
2145 # When configuring with --debug, the resulting string will be
2146 # "Basic string: debug", and when not, it will be "Basic string: release"
2147 #
2148 # This can be used to create variants of sets of flags according to the
2149 # build type:
2150 #
2151 #       cflags => picker(default => "-Wall",
2152 #                        debug   => "-g -O0",
2153 #                        release => "-O3")
2154 #
2155 sub picker {
2156     my %opts = @_;
2157     return sub { add($opts{default} || (),
2158                      $opts{$config{build_type}} || ())->(); }
2159 }
2160
2161 # Helper function to combine several values of different types into one.
2162 # This is useful if you want to combine a string with the result of a
2163 # lazy function, such as:
2164 #
2165 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
2166 #
2167 sub combine {
2168     my @stuff = @_;
2169     return sub { add(@stuff)->(); }
2170 }
2171
2172 # Helper function to implement conditional values depending on the value
2173 # of $disabled{threads}.  Can be used as follows:
2174 #
2175 #       cflags => combine("-Wall", threads("-pthread"))
2176 #
2177 sub threads {
2178     my @flags = @_;
2179     return sub { add($disabled{threads} ? () : @flags)->(); }
2180 }
2181
2182
2183
2184 our $add_called = 0;
2185 # Helper function to implement adding values to already existing configuration
2186 # values.  It handles elements that are ARRAYs, CODEs and scalars
2187 sub _add {
2188     my $separator = shift;
2189
2190     # If there's any ARRAY in the collection of values OR the separator
2191     # is undef, we will return an ARRAY of combined values, otherwise a
2192     # string of joined values with $separator as the separator.
2193     my $found_array = !defined($separator);
2194
2195     my @values =
2196         map {
2197             my $res = $_;
2198             while (ref($res) eq "CODE") {
2199                 $res = $res->();
2200             }
2201             if (defined($res)) {
2202                 if (ref($res) eq "ARRAY") {
2203                     $found_array = 1;
2204                     @$res;
2205                 } else {
2206                     $res;
2207                 }
2208             } else {
2209                 ();
2210             }
2211     } (@_);
2212
2213     $add_called = 1;
2214
2215     if ($found_array) {
2216         [ @values ];
2217     } else {
2218         join($separator, grep { defined($_) && $_ ne "" } @values);
2219     }
2220 }
2221 sub add_before {
2222     my $separator = " ";
2223     if (ref($_[$#_]) eq "HASH") {
2224         my $opts = pop;
2225         $separator = $opts->{separator};
2226     }
2227     my @x = @_;
2228     sub { _add($separator, @x, @_) };
2229 }
2230 sub add {
2231     my $separator = " ";
2232     if (ref($_[$#_]) eq "HASH") {
2233         my $opts = pop;
2234         $separator = $opts->{separator};
2235     }
2236     my @x = @_;
2237     sub { _add($separator, @_, @x) };
2238 }
2239
2240 # configuration reader, evaluates the input file as a perl script and expects
2241 # it to fill %targets with target configurations.  Those are then added to
2242 # %table.
2243 sub read_config {
2244     my $fname = shift;
2245     open(CONFFILE, "< $fname")
2246         or die "Can't open configuration file '$fname'!\n";
2247     my $x = $/;
2248     undef $/;
2249     my $content = <CONFFILE>;
2250     $/ = $x;
2251     close(CONFFILE);
2252     my %targets = ();
2253     {
2254         # Protect certain tables from tampering
2255         local %table = %::table;
2256
2257         eval $content;
2258         warn $@ if $@;
2259     }
2260
2261     # For each target, check that it's configured with a hash table.
2262     foreach (keys %targets) {
2263         if (ref($targets{$_}) ne "HASH") {
2264             if (ref($targets{$_}) eq "") {
2265                 warn "Deprecated target configuration for $_, ignoring...\n";
2266             } else {
2267                 warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
2268             }
2269             delete $targets{$_};
2270         } else {
2271             $targets{$_}->{_conf_fname_int} = add([ $fname ]);
2272         }
2273     }
2274
2275     %table = (%table, %targets);
2276
2277 }
2278
2279 # configuration resolver.  Will only resolve all the lazy evaluation
2280 # codeblocks for the chosen target and all those it inherits from,
2281 # recursively
2282 sub resolve_config {
2283     my $target = shift;
2284     my @breadcrumbs = @_;
2285
2286 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
2287
2288     if (grep { $_ eq $target } @breadcrumbs) {
2289         die "inherit_from loop!  target backtrace:\n  "
2290             ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
2291     }
2292
2293     if (!defined($table{$target})) {
2294         warn "Warning! target $target doesn't exist!\n";
2295         return ();
2296     }
2297     # Recurse through all inheritances.  They will be resolved on the
2298     # fly, so when this operation is done, they will all just be a
2299     # bunch of attributes with string values.
2300     # What we get here, though, are keys with references to lists of
2301     # the combined values of them all.  We will deal with lists after
2302     # this stage is done.
2303     my %combined_inheritance = ();
2304     if ($table{$target}->{inherit_from}) {
2305         my @inherit_from =
2306             map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
2307         foreach (@inherit_from) {
2308             my %inherited_config = resolve_config($_, $target, @breadcrumbs);
2309
2310             # 'template' is a marker that's considered private to
2311             # the config that had it.
2312             delete $inherited_config{template};
2313
2314             foreach (keys %inherited_config) {
2315                 if (!$combined_inheritance{$_}) {
2316                     $combined_inheritance{$_} = [];
2317                 }
2318                 push @{$combined_inheritance{$_}}, $inherited_config{$_};
2319             }
2320         }
2321     }
2322
2323     # We won't need inherit_from in this target any more, since we've
2324     # resolved all the inheritances that lead to this
2325     delete $table{$target}->{inherit_from};
2326
2327     # Now is the time to deal with those lists.  Here's the place to
2328     # decide what shall be done with those lists, all based on the
2329     # values of the target we're currently dealing with.
2330     # - If a value is a coderef, it will be executed with the list of
2331     #   inherited values as arguments.
2332     # - If the corresponding key doesn't have a value at all or is the
2333     #   empty string, the inherited value list will be run through the
2334     #   default combiner (below), and the result becomes this target's
2335     #   value.
2336     # - Otherwise, this target's value is assumed to be a string that
2337     #   will simply override the inherited list of values.
2338     my $default_combiner = add();
2339
2340     my %all_keys =
2341         map { $_ => 1 } (keys %combined_inheritance,
2342                          keys %{$table{$target}});
2343
2344     sub process_values {
2345         my $object    = shift;
2346         my $inherited = shift;  # Always a [ list ]
2347         my $target    = shift;
2348         my $entry     = shift;
2349
2350         $add_called = 0;
2351
2352         while(ref($object) eq "CODE") {
2353             $object = $object->(@$inherited);
2354         }
2355         if (!defined($object)) {
2356             return ();
2357         }
2358         elsif (ref($object) eq "ARRAY") {
2359             local $add_called;  # To make sure recursive calls don't affect it
2360             return [ map { process_values($_, $inherited, $target, $entry) }
2361                      @$object ];
2362         } elsif (ref($object) eq "") {
2363             return $object;
2364         } else {
2365             die "cannot handle reference type ",ref($object)
2366                 ," found in target ",$target," -> ",$entry,"\n";
2367         }
2368     }
2369
2370     foreach (sort keys %all_keys) {
2371         my $previous = $combined_inheritance{$_};
2372
2373         # Current target doesn't have a value for the current key?
2374         # Assign it the default combiner, the rest of this loop body
2375         # will handle it just like any other coderef.
2376         if (!exists $table{$target}->{$_}) {
2377             $table{$target}->{$_} = $default_combiner;
2378         }
2379
2380         $table{$target}->{$_} = process_values($table{$target}->{$_},
2381                                                $combined_inheritance{$_},
2382                                                $target, $_);
2383         unless(defined($table{$target}->{$_})) {
2384             delete $table{$target}->{$_};
2385         }
2386 #        if ($extra_checks &&
2387 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
2388 #            warn "$_ got replaced in $target\n";
2389 #        }
2390     }
2391
2392     # Finally done, return the result.
2393     return %{$table{$target}};
2394 }
2395
2396 sub usage
2397         {
2398         print STDERR $usage;
2399         print STDERR "\npick os/compiler from:\n";
2400         my $j=0;
2401         my $i;
2402         my $k=0;
2403         foreach $i (sort keys %table)
2404                 {
2405                 next if $table{$i}->{template};
2406                 next if $i =~ /^debug/;
2407                 $k += length($i) + 1;
2408                 if ($k > 78)
2409                         {
2410                         print STDERR "\n";
2411                         $k=length($i);
2412                         }
2413                 print STDERR $i . " ";
2414                 }
2415         foreach $i (sort keys %table)
2416                 {
2417                 next if $table{$i}->{template};
2418                 next if $i !~ /^debug/;
2419                 $k += length($i) + 1;
2420                 if ($k > 78)
2421                         {
2422                         print STDERR "\n";
2423                         $k=length($i);
2424                         }
2425                 print STDERR $i . " ";
2426                 }
2427         print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
2428         exit(1);
2429         }
2430
2431 sub run_dofile
2432 {
2433     my $out = shift;
2434     my @templates = @_;
2435
2436     unlink $out || warn "Can't remove $out, $!"
2437         if -f $out;
2438     foreach (@templates) {
2439         die "Can't open $_, $!" unless -f $_;
2440     }
2441     my $perlcmd = (quotify("maybeshell", $config{perl}))[0];
2442     my $cmd = "$perlcmd \"-I.\" \"-Mconfigdata\" \"$dofile\" -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
2443     #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
2444     system($cmd);
2445     exit 1 if $? != 0;
2446     rename("$out.new", $out) || die "Can't rename $out.new, $!";
2447 }
2448
2449 sub which
2450 {
2451     my ($name)=@_;
2452
2453     if (eval { require IPC::Cmd; 1; }) {
2454         IPC::Cmd->import();
2455         return scalar IPC::Cmd::can_run($name);
2456     } else {
2457         # if there is $directories component in splitpath,
2458         # then it's not something to test with $PATH...
2459         return $name if (File::Spec->splitpath($name))[1];
2460
2461         foreach (File::Spec->path()) {
2462             my $fullpath = catfile($_, "$name$target{exe_extension}");
2463             if (-f $fullpath and -x $fullpath) {
2464                 return $fullpath;
2465             }
2466         }
2467     }
2468 }
2469
2470 # Configuration printer ##############################################
2471
2472 sub print_table_entry
2473 {
2474     my $target = shift;
2475     my %target = resolve_config($target);
2476     my $type = shift;
2477
2478     # Don't print the templates
2479     return if $target{template};
2480
2481     my @sequence = (
2482         "sys_id",
2483         "cc",
2484         "cflags",
2485         "defines",
2486         "unistd",
2487         "ld",
2488         "lflags",
2489         "loutflag",
2490         "plib_lflags",
2491         "ex_libs",
2492         "bn_ops",
2493         "apps_aux_src",
2494         "cpuid_asm_src",
2495         "uplink_aux_src",
2496         "bn_asm_src",
2497         "ec_asm_src",
2498         "des_asm_src",
2499         "aes_asm_src",
2500         "bf_asm_src",
2501         "md5_asm_src",
2502         "cast_asm_src",
2503         "sha1_asm_src",
2504         "rc4_asm_src",
2505         "rmd160_asm_src",
2506         "rc5_asm_src",
2507         "wp_asm_src",
2508         "cmll_asm_src",
2509         "modes_asm_src",
2510         "padlock_asm_src",
2511         "chacha_asm_src",
2512         "poly1035_asm_src",
2513         "thread_scheme",
2514         "perlasm_scheme",
2515         "dso_scheme",
2516         "shared_target",
2517         "shared_cflag",
2518         "shared_defines",
2519         "shared_ldflag",
2520         "shared_rcflag",
2521         "shared_extension",
2522         "dso_extension",
2523         "obj_extension",
2524         "exe_extension",
2525         "ranlib",
2526         "ar",
2527         "arflags",
2528         "aroutflag",
2529         "rc",
2530         "rcflags",
2531         "rcoutflag",
2532         "mt",
2533         "mtflags",
2534         "mtinflag",
2535         "mtoutflag",
2536         "multilib",
2537         "build_scheme",
2538         );
2539
2540     if ($type eq "TABLE") {
2541         print "\n";
2542         print "*** $target\n";
2543         foreach (@sequence) {
2544             if (ref($target{$_}) eq "ARRAY") {
2545                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
2546             } else {
2547                 printf "\$%-12s = %s\n", $_, $target{$_};
2548             }
2549         }
2550     } elsif ($type eq "HASH") {
2551         my $largest =
2552             length((sort { length($a) <=> length($b) } @sequence)[-1]);
2553         print "    '$target' => {\n";
2554         foreach (@sequence) {
2555             if ($target{$_}) {
2556                 if (ref($target{$_}) eq "ARRAY") {
2557                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
2558                 } else {
2559                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
2560                 }
2561             }
2562         }
2563         print "    },\n";
2564     }
2565 }
2566
2567 # Utility routines ###################################################
2568
2569 # On VMS, if the given file is a logical name, File::Spec::Functions
2570 # will consider it an absolute path.  There are cases when we want a
2571 # purely syntactic check without checking the environment.
2572 sub isabsolute {
2573     my $file = shift;
2574
2575     # On non-platforms, we just use file_name_is_absolute().
2576     return file_name_is_absolute($file) unless $^O eq "VMS";
2577
2578     # If the file spec includes a device or a directpry spec,
2579     # file_name_is_absolute() is perfectly safe.
2580     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
2581
2582     # Here, we know the given file spec isn't absolute
2583     return 0;
2584 }
2585
2586 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
2587 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
2588 # realpath() requires that at least all path components except the last is an
2589 # existing directory.  On VMS, the last component of the directory spec must
2590 # exist.
2591 sub absolutedir {
2592     my $dir = shift;
2593
2594     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
2595     # will return the volume name for the device, no matter what.  Also,
2596     # it will return an incorrect directory spec if the argument is a
2597     # directory that doesn't exist.
2598     if ($^O eq "VMS") {
2599         return rel2abs($dir);
2600     }
2601
2602     # We use realpath() on Unix, since no other will properly clean out
2603     # a directory spec.
2604     use Cwd qw/realpath/;
2605
2606     return realpath($dir);
2607 }
2608
2609 sub quotify {
2610     my %processors = (
2611         perl    => sub { my $x = shift;
2612                          $x =~ s/([\\\$\@"])/\\$1/g;
2613                          return '"'.$x.'"'; },
2614         maybeshell => sub { my $x = shift;
2615                             (my $y = $x) =~ s/([\\\"])/\\$1/g;
2616                             if ($x ne $y || $x =~ m|\s|) {
2617                                 return '"'.$y.'"';
2618                             } else {
2619                                 return $x;
2620                             }
2621                         },
2622         );
2623     my $for = shift;
2624     my $processor =
2625         defined($processors{$for}) ? $processors{$for} : sub { shift; };
2626
2627     return map { $processor->($_); } @_;
2628 }
2629
2630 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
2631 # $filename is a file name to read from
2632 # $line_concat_cond_re is a regexp detecting a line continuation ending
2633 # $line_concat is a CODEref that takes care of concatenating two lines
2634 sub collect_from_file {
2635     my $filename = shift;
2636     my $line_concat_cond_re = shift;
2637     my $line_concat = shift;
2638
2639     open my $fh, $filename || die "unable to read $filename: $!\n";
2640     return sub {
2641         my $saved_line = "";
2642         $_ = "";
2643         while (<$fh>) {
2644             s|\R$||;
2645             if (defined $line_concat) {
2646                 $_ = $line_concat->($saved_line, $_);
2647                 $saved_line = "";
2648             }
2649             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
2650                 $saved_line = $_;
2651                 next;
2652             }
2653             return $_;
2654         }
2655         die "$filename ending with continuation line\n" if $_;
2656         close $fh;
2657         return undef;
2658     }
2659 }
2660
2661 # collect_from_array($array, $line_concat_cond_re, $line_concat)
2662 # $array is an ARRAYref of lines
2663 # $line_concat_cond_re is a regexp detecting a line continuation ending
2664 # $line_concat is a CODEref that takes care of concatenating two lines
2665 sub collect_from_array {
2666     my $array = shift;
2667     my $line_concat_cond_re = shift;
2668     my $line_concat = shift;
2669     my @array = (@$array);
2670
2671     return sub {
2672         my $saved_line = "";
2673         $_ = "";
2674         while (defined($_ = shift @array)) {
2675             s|\R$||;
2676             if (defined $line_concat) {
2677                 $_ = $line_concat->($saved_line, $_);
2678                 $saved_line = "";
2679             }
2680             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
2681                 $saved_line = $_;
2682                 next;
2683             }
2684             return $_;
2685         }
2686         die "input text ending with continuation line\n" if $_;
2687         return undef;
2688     }
2689 }
2690
2691 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
2692 # $lineiterator is a CODEref that delivers one line at a time.
2693 # All following arguments are regex/CODEref pairs, where the regexp detects a
2694 # line and the CODEref does something with the result of the regexp.
2695 sub collect_information {
2696     my $lineiterator = shift;
2697     my %collectors = @_;
2698
2699     while(defined($_ = $lineiterator->())) {
2700         s|\R$||;
2701         my $found = 0;
2702         if ($collectors{"BEFORE"}) {
2703             $collectors{"BEFORE"}->($_);
2704         }
2705         foreach my $re (keys %collectors) {
2706             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
2707                 $collectors{$re}->($lineiterator);
2708                 $found = 1;
2709             };
2710         }
2711         if ($collectors{"OTHERWISE"}) {
2712             $collectors{"OTHERWISE"}->($lineiterator, $_)
2713                 unless $found || !defined $collectors{"OTHERWISE"};
2714         }
2715         if ($collectors{"AFTER"}) {
2716             $collectors{"AFTER"}->($_);
2717         }
2718     }
2719 }
2720
2721 # tokenize($line)
2722 # $line is a line of text to split up into tokens
2723 # returns a list of tokens
2724 #
2725 # Tokens are divided by spaces.  If the tokens include spaces, they
2726 # have to be quoted with single or double quotes.  Double quotes
2727 # inside a double quoted token must be escaped.  Escaping is done
2728 # with backslash.
2729 # Basically, the same quoting rules apply for " and ' as in any
2730 # Unix shell.
2731 sub tokenize {
2732     my $line = my $debug_line = shift;
2733     my @result = ();
2734
2735     while ($line =~ s|^\s+||, $line ne "") {
2736         my $token = "";
2737         while ($line ne "" && $line !~ m|^\s|) {
2738             if ($line =~ m/^"((?:[^"\\]+|\\.)*)"/) {
2739                 $token .= $1;
2740                 $line = $';
2741             } elsif ($line =~ m/^'([^']*)'/) {
2742                 $token .= $1;
2743                 $line = $';
2744             } elsif ($line =~ m/^(\S+)/) {
2745                 $token .= $1;
2746                 $line = $';
2747             }
2748         }
2749         push @result, $token;
2750     }
2751
2752     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
2753         print STDERR "DEBUG[tokenize]: Parsed '$debug_line' into:\n";
2754         print STDERR "DEBUG[tokenize]: ('", join("', '", @result), "')\n";
2755     }
2756     return @result;
2757 }