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 File::Basename;
  15 use File::Spec::Functions qw/:DEFAULT abs2rel rel2abs/;
  16 use File::Path qw/mkpath/;
  17 use if $^O ne "VMS", 'File::Glob' => qw/glob/;
  18
  19 # see INSTALL for instructions.
  20
  21 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";
  22
  23 # Options:
  24 #
  25 # --config      add the given configuration file, which will be read after
  26 #               any "Configurations*" files that are found in the same
  27 #               directory as this script.
  28 # --prefix      prefix for the OpenSSL installation, which includes the
  29 #               directories bin, lib, include, share/man, share/doc/openssl
  30 #               This becomes the value of INSTALLTOP in Makefile
  31 #               (Default: /usr/local)
  32 # --openssldir  OpenSSL data area, such as openssl.cnf, certificates and keys.
  33 #               If it's a relative directory, it will be added on the directory
  34 #               given with --prefix.
  35 #               This becomes the value of OPENSSLDIR in Makefile and in C.
  36 #               (Default: PREFIX/ssl)
  37 #
  38 # --cross-compile-prefix Add specified prefix to binutils components.
  39 #
  40 # --api         One of 0.9.8, 1.0.0 or 1.1.0.  Do not compile support for
  41 #               interfaces deprecated as of the specified OpenSSL version.
  42 #
  43 # no-hw-xxx     do not compile support for specific crypto hardware.
  44 #               Generic OpenSSL-style methods relating to this support
  45 #               are always compiled but return NULL if the hardware
  46 #               support isn't compiled.
  47 # no-hw         do not compile support for any crypto hardware.
  48 # [no-]threads  [don't] try to create a library that is suitable for
  49 #               multithreaded applications (default is "threads" if we
  50 #               know how to do it)
  51 # [no-]shared   [don't] try to create shared libraries when supported.
  52 # [no-]pic      [don't] try to build position independent code when supported.
  53 #               If disabled, it also disables shared and dynamic-engine.
  54 # no-asm        do not use assembler
  55 # no-dso        do not compile in any native shared-library methods. This
  56 #               will ensure that all methods just return NULL.
  57 # no-egd        do not compile support for the entropy-gathering daemon APIs
  58 # [no-]zlib     [don't] compile support for zlib compression.
  59 # zlib-dynamic  Like "zlib", but the zlib library is expected to be a shared
  60 #               library and will be loaded in run-time by the OpenSSL library.
  61 # sctp          include SCTP support
  62 # 386           generate 80386 code
  63 # enable-weak-ssl-ciphers
  64 #               Enable weak ciphers that are disabled by default. This currently
  65 #               only includes RC4 based ciphers.
  66 # no-sse2       disables IA-32 SSE2 code, above option implies no-sse2
  67 # no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
  68 # -<xxx> +<xxx> compiler options are passed through
  69 #
  70 # DEBUG_SAFESTACK use type-safe stacks to enforce type-safety on stack items
  71 #               provided to stack calls. Generates unique stack functions for
  72 #               each possible stack type.
  73 # BN_LLONG      use the type 'long long' in crypto/bn/bn.h
  74 # RC4_CHAR      use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
  75 # Following are set automatically by this script
  76 #
  77 # MD5_ASM       use some extra md5 assembler,
  78 # SHA1_ASM      use some extra sha1 assembler, must define L_ENDIAN for x86
  79 # RMD160_ASM    use some extra ripemd160 assembler,
  80 # SHA256_ASM    sha256_block is implemented in assembler
  81 # SHA512_ASM    sha512_block is implemented in assembler
  82 # AES_ASM       ASE_[en|de]crypt is implemented in assembler
  83
  84 # Minimum warning options... any contributions to OpenSSL should at least get
  85 # past these.
  86
  87 # DEBUG_UNUSED enables __owur (warn unused result) checks.
  88 my $gcc_devteam_warn = "-DDEBUG_UNUSED"
  89         # -DPEDANTIC complements -pedantic and is meant to mask code that
  90         # is not strictly standard-compliant and/or implementation-specifc,
  91         # e.g. inline assembly, disregards to alignment requirements, such
  92         # that -pedantic would complain about. Incidentally -DPEDANTIC has
  93         # to be used even in sanitized builds, because sanitizer too is
  94         # supposed to and does take notice of non-standard behaviour. Then
  95         # -pedantic with pre-C9x compiler would also complain about 'long
  96         # long' not being supported. As 64-bit algorithms are common now,
  97         # it grew impossible to resolve this without sizeable additional
  98         # code, so we just tell compiler to be pedantic about everything
  99         # but 'long long' type.
 100         . " -DPEDANTIC -pedantic -Wno-long-long"
 101         . " -Wall"
 102         . " -Wsign-compare"
 103         . " -Wmissing-prototypes"
 104         . " -Wshadow"
 105         . " -Wformat"
 106         . " -Wtype-limits"
 107         . " -Werror"
 108         ;
 109
 110 # These are used in addition to $gcc_devteam_warn when the compiler is clang.
 111 # TODO(openssl-team): fix problems and investigate if (at least) the
 112 # following warnings can also be enabled:
 113 #       -Wswitch-enum
 114 #       -Wcast-align
 115 #       -Wunreachable-code
 116 #       -Wlanguage-extension-token -- no, we use asm()
 117 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
 118 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
 119 my $clang_devteam_warn = ""
 120         . " -Qunused-arguments"
 121         . " -Wextra"
 122         . " -Wno-unused-parameter"
 123         . " -Wno-missing-field-initializers"
 124         . " -Wno-language-extension-token"
 125         . " -Wno-extended-offsetof"
 126         . " -Wconditional-uninitialized"
 127         . " -Wincompatible-pointer-types-discards-qualifiers"
 128         . " -Wmissing-variable-declarations"
 129         ;
 130
 131 # This adds backtrace information to the memory leak info.  Is only used
 132 # when crypto-mdebug-backtrace is enabled.
 133 my $memleak_devteam_backtrace = "-rdynamic";
 134
 135 my $strict_warnings = 0;
 136
 137 # As for $BSDthreads. Idea is to maintain "collective" set of flags,
 138 # which would cover all BSD flavors. -pthread applies to them all,
 139 # but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
 140 # -lc_r, which is sufficient. FreeBSD 4.x expands it as -lc_r,
 141 # which has to be accompanied by explicit -D_THREAD_SAFE and
 142 # sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
 143 # seems to be sufficient?
 144 our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
 145
 146 #
 147 # API compability name to version number mapping.
 148 #
 149 my $maxapi = "1.1.0";           # API for "no-deprecated" builds
 150 my $apitable = {
 151     "1.1.0" => "0x10100000L",
 152     "1.0.0" => "0x10000000L",
 153     "0.9.8" => "0x00908000L",
 154 };
 155
 156 our %table = ();
 157 our %config = ();
 158 our %withargs = ();
 159
 160 # Forward declarations ###############################################
 161
 162 # read_config(filename)
 163 #
 164 # Reads a configuration file and populates %table with the contents
 165 # (which the configuration file places in %targets).
 166 sub read_config;
 167
 168 # resolve_config(target)
 169 #
 170 # Resolves all the late evaluations, inheritances and so on for the
 171 # chosen target and any target it inherits from.
 172 sub resolve_config;
 173
 174
 175 # Information collection #############################################
 176
 177 # Unified build supports separate build dir
 178 my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
 179 my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
 180 my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));
 181
 182 my $local_config_envname = 'OPENSSL_LOCAL_CONFIG_DIR';
 183
 184 $config{sourcedir} = abs2rel($srcdir);
 185 $config{builddir} = abs2rel($blddir);
 186
 187 # Collect version numbers
 188 $config{version} = "unknown";
 189 $config{version_num} = "unknown";
 190 $config{shlib_version_number} = "unknown";
 191 $config{shlib_version_history} = "unknown";
 192
 193 collect_information(
 194     collect_from_file(catfile($srcdir,'include/openssl/opensslv.h')),
 195     qr/OPENSSL.VERSION.TEXT.*OpenSSL (\S+) / => sub { $config{version} = $1; },
 196     qr/OPENSSL.VERSION.NUMBER.*(0x\S+)/      => sub { $config{version_num}=$1 },
 197     qr/SHLIB_VERSION_NUMBER *"([^"]+)"/      => sub { $config{shlib_version_number}=$1 },
 198     qr/SHLIB_VERSION_HISTORY *"([^"]*)"/     => sub { $config{shlib_version_history}=$1 }
 199     );
 200 if ($config{shlib_version_history} ne "") { $config{shlib_version_history} .= ":"; }
 201
 202 ($config{major}, $config{minor})
 203     = ($config{version} =~ /^([0-9]+)\.([0-9\.]+)/);
 204 ($config{shlib_major}, $config{shlib_minor})
 205     = ($config{shlib_version_number} =~ /^([0-9]+)\.([0-9\.]+)/);
 206 die "erroneous version information in opensslv.h: ",
 207     "$config{major}, $config{minor}, $config{shlib_major}, $config{shlib_minor}\n"
 208     if ($config{major} eq "" || $config{minor} eq ""
 209         || $config{shlib_major} eq "" ||  $config{shlib_minor} eq "");
 210
 211 # Collect target configurations
 212
 213 my $pattern = catfile(dirname($0), "Configurations", "*.conf");
 214 foreach (sort glob($pattern)) {
 215     &read_config($_);
 216 }
 217
 218 if (defined $ENV{$local_config_envname}) {
 219     if ($^O eq 'VMS') {
 220         # VMS environment variables are logical names,
 221         # which can be used as is
 222         $pattern = $local_config_envname . ':' . '*.conf';
 223     } else {
 224         $pattern = catfile($ENV{$local_config_envname}, '*.conf');
 225     }
 226
 227     foreach (sort glob($pattern)) {
 228         &read_config($_);
 229     }
 230 }
 231
 232
 233 print "Configuring OpenSSL version $config{version} (0x$config{version_num})\n";
 234
 235 $config{prefix}="";
 236 $config{openssldir}="";
 237 $config{processor}="";
 238 $config{libdir}="";
 239 $config{cross_compile_prefix}="";
 240 $config{fipslibdir}="/usr/local/ssl/fips-2.0/lib/";
 241 my $nofipscanistercheck=0;
 242 $config{baseaddr}="0xFB00000";
 243 my $auto_threads=1;    # enable threads automatically? true by default
 244 my $default_ranlib;
 245 $config{fips}=0;
 246
 247 # Top level directories to build
 248 $config{dirs} = [ "crypto", "ssl", "engines", "apps", "test", "tools" ];
 249 # crypto/ subdirectories to build
 250 $config{sdirs} = [
 251     "objects",
 252     "md2", "md4", "md5", "sha", "mdc2", "hmac", "ripemd", "whrlpool", "poly1305", "blake2",
 253     "des", "aes", "rc2", "rc4", "rc5", "idea", "bf", "cast", "camellia", "seed", "chacha", "modes",
 254     "bn", "ec", "rsa", "dsa", "dh", "dso", "engine",
 255     "buffer", "bio", "stack", "lhash", "rand", "err",
 256     "evp", "asn1", "pem", "x509", "x509v3", "conf", "txt_db", "pkcs7", "pkcs12", "comp", "ocsp", "ui",
 257     "cms", "ts", "srp", "cmac", "ct", "async", "kdf"
 258     ];
 259
 260 # Known TLS and DTLS protocols
 261 my @tls = qw(ssl3 tls1 tls1_1 tls1_2);
 262 my @dtls = qw(dtls1 dtls1_2);
 263
 264 # Explicitly known options that are possible to disable.  They can
 265 # be regexps, and will be used like this: /^no-${option}$/
 266 # For developers: keep it sorted alphabetically
 267
 268 my @disablables = (
 269     "afalgeng",
 270     "asan",
 271     "asm",
 272     "async",
 273     "autoalginit",
 274     "autoerrinit",
 275     "bf",
 276     "blake2",
 277     "camellia",
 278     "capieng",
 279     "cast",
 280     "chacha",
 281     "cmac",
 282     "cms",
 283     "comp",
 284     "crypto-mdebug",
 285     "crypto-mdebug-backtrace",
 286     "ct",
 287     "deprecated",
 288     "des",
 289     "dgram",
 290     "dh",
 291     "dsa",
 292     "dso",
 293     "dtls",
 294     "dynamic-engine",
 295     "ec",
 296     "ec2m",
 297     "ecdh",
 298     "ecdsa",
 299     "ec_nistp_64_gcc_128",
 300     "egd",
 301     "engine",
 302     "err",
 303     "filenames",
 304     "fuzz-libfuzzer",
 305     "fuzz-afl",
 306     "gost",
 307     "heartbeats",
 308     "hw(-.+)?",
 309     "idea",
 310     "makedepend",
 311     "md2",
 312     "md4",
 313     "mdc2",
 314     "multiblock",
 315     "nextprotoneg",
 316     "ocb",
 317     "ocsp",
 318     "pic",
 319     "poly1305",
 320     "posix-io",
 321     "psk",
 322     "rc2",
 323     "rc4",
 324     "rc5",
 325     "rdrand",
 326     "rfc3779",
 327     "ripemd",
 328     "rmd160",
 329     "scrypt",
 330     "sctp",
 331     "seed",
 332     "shared",
 333     "sock",
 334     "srp",
 335     "srtp",
 336     "sse2",
 337     "ssl",
 338     "ssl-trace",
 339     "static-engine",
 340     "stdio",
 341     "threads",
 342     "tls",
 343     "ts",
 344     "ubsan",
 345     "ui",
 346     "unit-test",
 347     "whirlpool",
 348     "weak-ssl-ciphers",
 349     "zlib",
 350     "zlib-dynamic",
 351     );
 352 foreach my $proto ((@tls, @dtls))
 353         {
 354         push(@disablables, $proto);
 355         push(@disablables, "$proto-method");
 356         }
 357
 358 my @deprecated_disablables = (
 359     "ssl2",
 360     "buf-freelists",
 361     );
 362
 363 # All of the following is disabled by default (RC5 was enabled before 0.9.8):
 364
 365 our %disabled = ( # "what"         => "comment"
 366                   "asan"                => "default",
 367                   "ec_nistp_64_gcc_128" => "default",
 368                   "egd"                 => "default",
 369                   "fuzz-libfuzzer"      => "default",
 370                   "fuzz-afl"            => "default",
 371                   "md2"                 => "default",
 372                   "rc5"                 => "default",
 373                   "sctp"                => "default",
 374                   "ssl-trace"           => "default",
 375                   "ssl3"                => "default",
 376                   "ssl3-method"         => "default",
 377                   "ubsan"               => "default",
 378                   "unit-test"           => "default",
 379                   "weak-ssl-ciphers"    => "default",
 380                   "zlib"                => "default",
 381                   "zlib-dynamic"        => "default",
 382                   "crypto-mdebug"       => "default",
 383                   "crypto-mdebug-backtrace" => "default",
 384                   "heartbeats"          => "default",
 385                 );
 386
 387 # Note: => pair form used for aesthetics, not to truly make a hash table
 388 my @disable_cascades = (
 389     # "what"            => [ "cascade", ... ]
 390     sub { $config{processor} eq "386" }
 391                         => [ "sse2" ],
 392     "ssl"               => [ "ssl3" ],
 393     "ssl3-method"       => [ "ssl3" ],
 394     "zlib"              => [ "zlib-dynamic" ],
 395     "des"               => [ "mdc2" ],
 396     "ec"                => [ "ecdsa", "ecdh" ],
 397
 398     "dgram"             => [ "dtls", "sctp" ],
 399     "sock"              => [ "dgram" ],
 400     "dtls"              => [ @dtls ],
 401
 402     # SSL 3.0, (D)TLS 1.0 and TLS 1.1 require MD5 and SHA
 403     "md5"               => [ "ssl", "tls1", "tls1_1", "dtls1" ],
 404     "sha"               => [ "ssl", "tls1", "tls1_1", "dtls1" ],
 405
 406     # Additionally, SSL 3.0 requires either RSA or DSA+DH
 407     sub { $disabled{rsa}
 408           && ($disabled{dsa} || $disabled{dh}); }
 409                         => [ "ssl" ],
 410
 411     # (D)TLS 1.0 and TLS 1.1 also require either RSA or DSA+DH
 412     # or ECDSA + ECDH.  (D)TLS 1.2 has this requirement as well.
 413     # (XXX: We don't support PSK-only builds).
 414     sub { $disabled{rsa}
 415           && ($disabled{dsa} || $disabled{dh})
 416           && ($disabled{ecdsa} || $disabled{ecdh}); }
 417                         => [ "tls1", "tls1_1", "tls1_2",
 418                              "dtls1", "dtls1_2" ],
 419
 420     "tls"               => [ @tls ],
 421
 422     # SRP and HEARTBEATS require TLSEXT
 423     "tlsext"            => [ "srp", "heartbeats" ],
 424
 425     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
 426
 427     # Without DSO, we can't load dynamic engines, so don't build them dynamic
 428     "dso"               => [ "dynamic-engine" ],
 429
 430     # Without position independent code, there can be no shared libraries or DSOs
 431     "pic"               => [ "shared" ],
 432     "shared"            => [ "dynamic-engine" ],
 433     "engine"            => [ "afalgeng" ],
 434
 435     # no-autoalginit is only useful when building non-shared
 436     "autoalginit"       => [ "shared", "apps" ],
 437
 438     "stdio"             => [ "apps" ],
 439     "apps"              => [ "tests" ],
 440     "comp"              => [ "zlib" ],
 441     sub { !$disabled{"unit-test"} } => [ "heartbeats" ],
 442     );
 443
 444 # Avoid protocol support holes.  Also disable all versions below N, if version
 445 # N is disabled while N+1 is enabled.
 446 #
 447 my @list = (reverse @tls);
 448 while ((my $first, my $second) = (shift @list, shift @list)) {
 449     last unless @list;
 450     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 451                               => [ @list ] );
 452     unshift @list, $second;
 453 }
 454 my @list = (reverse @dtls);
 455 while ((my $first, my $second) = (shift @list, shift @list)) {
 456     last unless @list;
 457     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 458                               => [ @list ] );
 459     unshift @list, $second;
 460 }
 461
 462 # Explicit "no-..." options will be collected in %disabled along with the defaults.
 463 # To remove something from %disabled, use "enable-foo".
 464 # For symmetry, "disable-foo" is a synonym for "no-foo".
 465
 466 my @generated_headers = (
 467     "include/openssl/opensslconf.h",
 468     "crypto/include/internal/bn_conf.h",
 469     "crypto/include/internal/dso_conf.h"
 470     );
 471
 472 my @generated_by_make_headers = (
 473     "crypto/buildinf.h"
 474     );
 475
 476
 477 my $no_sse2=0;
 478
 479 &usage if ($#ARGV < 0);
 480
 481 my $user_cflags="";
 482 my @user_defines=();
 483 $config{openssl_api_defines}=[];
 484 $config{openssl_algorithm_defines}=[];
 485 $config{openssl_thread_defines}=[];
 486 $config{openssl_sys_defines}=[];
 487 $config{openssl_other_defines}=[];
 488 my $libs="";
 489 my $target="";
 490 $config{options}="";
 491 $config{build_type} = "release";
 492
 493 my @argvcopy=@ARGV;
 494
 495 if (grep /^reconf(igure)?$/, @argvcopy) {
 496     if (-f "./configdata.pm") {
 497         my $file = "./configdata.pm";
 498         unless (my $return = do $file) {
 499             die "couldn't parse $file: $@" if $@;
 500             die "couldn't do $file: $!"    unless defined $return;
 501             die "couldn't run $file"       unless $return;
 502         }
 503
 504         @argvcopy = defined($configdata::config{perlargv}) ?
 505             @{$configdata::config{perlargv}} : ();
 506         die "Incorrect data to reconfigure, please do a normal configuration\n"
 507             if (grep(/^reconf/,@argvcopy));
 508         $ENV{CROSS_COMPILE} = $configdata::config{cross_compile_prefix}
 509             if defined($configdata::config{cross_compile_prefix});
 510         $ENV{CROSS_COMPILE} = $configdata::config{cc}
 511             if defined($configdata::config{cc});
 512
 513         print "Reconfiguring with: ", join(" ",@argvcopy), "\n";
 514         print "    CROSS_COMPILE = ",$ENV{CROSS_COMPILE},"\n"
 515             if $ENV{CROSS_COMPILE};
 516         print "    CC = ",$ENV{CC},"\n" if $ENV{CC};
 517     } elsif (open IN, "<Makefile") {
 518         #
 519         # THIS SECTION IS TEMPORARY, it helps transitioning from Makefile
 520         # centered information gathering the reading configdata.pm
 521         #
 522         while (<IN>) {
 523             s|\R$||;
 524             if (/^CONFIGURE_ARGS=\s*(.*)\s*/) {
 525                 # Older form, we split the string and hope for the best
 526                 @argvcopy = split /\s+/, $_;
 527                 die "Incorrect data to reconfigure, please do a normal configuration\n"
 528                     if (grep(/^reconf/,@argvcopy));
 529             } elsif (/^CROSS_COMPILE=\s*(.*)/) {
 530                 $ENV{CROSS_COMPILE}=$1;
 531             } elsif (/^CC=\s*(?:\$\(CROSS_COMPILE\))?(.*?)$/) {
 532                 $ENV{CC}=$1;
 533             }
 534         }
 535         #
 536         # END OF TEMPORARY SECTION
 537         #
 538     } else {
 539         die "Insufficient data to reconfigure, please do a normal configuration\n";
 540     }
 541 }
 542
 543 $config{perlargv} = [ @argvcopy ];
 544
 545 my %unsupported_options = ();
 546 my %deprecated_options = ();
 547 foreach (@argvcopy)
 548         {
 549         # VMS is a case insensitive environment, and depending on settings
 550         # out of our control, we may receive options uppercased.  Let's
 551         # downcase at least the part before any equal sign.
 552         if ($^O eq "VMS")
 553                 {
 554                 s/^([^=]*)/lc($1)/e;
 555                 }
 556         s /^-no-/no-/; # some people just can't read the instructions
 557
 558         # rewrite some options in "enable-..." form
 559         s /^-?-?shared$/enable-shared/;
 560         s /^sctp$/enable-sctp/;
 561         s /^threads$/enable-threads/;
 562         s /^zlib$/enable-zlib/;
 563         s /^zlib-dynamic$/enable-zlib-dynamic/;
 564
 565         if (/^(no|disable|enable)-(.+)$/)
 566                 {
 567                 my $word = $2;
 568                 if (grep { $word =~ /^${_}$/ } @deprecated_disablables)
 569                         {
 570                         $deprecated_options{$_} = 1;
 571                         next;
 572                         }
 573                 elsif (!grep { $word =~ /^${_}$/ } @disablables)
 574                         {
 575                         $unsupported_options{$_} = 1;
 576                         next;
 577                         }
 578                 }
 579         if (/^no-(.+)$/ || /^disable-(.+)$/)
 580                 {
 581                 foreach my $proto ((@tls, @dtls))
 582                         {
 583                         if ($1 eq "$proto-method")
 584                                 {
 585                                 $disabled{"$proto"} = "option($proto-method)";
 586                                 last;
 587                                 }
 588                         }
 589                 if ($1 eq "dtls")
 590                         {
 591                         foreach my $proto (@dtls)
 592                                 {
 593                                 $disabled{$proto} = "option(dtls)";
 594                                 }
 595                         $disabled{"dtls"} = "option(dtls)";
 596                         }
 597                 elsif ($1 eq "ssl")
 598                         {
 599                         # Last one of its kind
 600                         $disabled{"ssl3"} = "option(ssl)";
 601                         }
 602                 elsif ($1 eq "tls")
 603                         {
 604                         # XXX: Tests will fail if all SSL/TLS
 605                         # protocols are disabled.
 606                         foreach my $proto (@tls)
 607                                 {
 608                                 $disabled{$proto} = "option(tls)";
 609                                 }
 610                         }
 611                 elsif ($1 eq "static-engine")
 612                         {
 613                         delete $disabled{"dynamic-engine"};
 614                         }
 615                 elsif ($1 eq "dynamic-engine")
 616                         {
 617                         $disabled{"dynamic-engine"} = "option";
 618                         }
 619                 else
 620                         {
 621                         $disabled{$1} = "option";
 622                         }
 623                 # No longer an automatic choice
 624                 $auto_threads = 0 if ($1 eq "threads");
 625                 }
 626         elsif (/^enable-(.+)$/)
 627                 {
 628                 if ($1 eq "static-engine")
 629                         {
 630                         $disabled{"dynamic-engine"} = "option";
 631                         }
 632                 elsif ($1 eq "dynamic-engine")
 633                         {
 634                         delete $disabled{"dynamic-engine"};
 635                         }
 636                 elsif ($1 eq "zlib-dynamic")
 637                         {
 638                         delete $disabled{"zlib"};
 639                         }
 640                 my $algo = $1;
 641                 delete $disabled{$algo};
 642
 643                 # No longer an automatic choice
 644                 $auto_threads = 0 if ($1 eq "threads");
 645                 }
 646         elsif (/^--strict-warnings$/)
 647                 {
 648                 $strict_warnings = 1;
 649                 }
 650         elsif (/^--debug$/)
 651                 {
 652                 $config{build_type} = "debug";
 653                 }
 654         elsif (/^--release$/)
 655                 {
 656                 $config{build_type} = "release";
 657                 }
 658         elsif (/^386$/)
 659                 { $config{processor}=386; }
 660         elsif (/^fips$/)
 661                 {
 662                 $config{fips}=1;
 663                 }
 664         elsif (/^rsaref$/)
 665                 {
 666                 # No RSAref support any more since it's not needed.
 667                 # The check for the option is there so scripts aren't
 668                 # broken
 669                 }
 670         elsif (/^nofipscanistercheck$/)
 671                 {
 672                 $config{fips} = 1;
 673                 $nofipscanistercheck = 1;
 674                 }
 675         elsif (/^[-+]/)
 676                 {
 677                 if (/^--prefix=(.*)$/)
 678                         {
 679                         $config{prefix}=$1;
 680                         die "Directory given with --prefix MUST be absolute\n"
 681                                 unless file_name_is_absolute($config{prefix});
 682                         }
 683                 elsif (/^--api=(.*)$/)
 684                         {
 685                         $config{api}=$1;
 686                         }
 687                 elsif (/^--libdir=(.*)$/)
 688                         {
 689                         $config{libdir}=$1;
 690                         }
 691                 elsif (/^--openssldir=(.*)$/)
 692                         {
 693                         $config{openssldir}=$1;
 694                         }
 695                 elsif (/^--with-zlib-lib=(.*)$/)
 696                         {
 697                         $withargs{zlib_lib}=$1;
 698                         }
 699                 elsif (/^--with-zlib-include=(.*)$/)
 700                         {
 701                         $withargs{zlib_include}=$1;
 702                         }
 703                 elsif (/^--with-fuzzer-lib=(.*)$/)
 704                         {
 705                         $withargs{fuzzer_lib}=$1;
 706                         }
 707                 elsif (/^--with-fuzzer-include=(.*)$/)
 708                         {
 709                         $withargs{fuzzer_include}=$1;
 710                         }
 711                 elsif (/^--with-fipslibdir=(.*)$/)
 712                         {
 713                         $config{fipslibdir}="$1/";
 714                         }
 715                 elsif (/^--with-baseaddr=(.*)$/)
 716                         {
 717                         $config{baseaddr}="$1";
 718                         }
 719                 elsif (/^--cross-compile-prefix=(.*)$/)
 720                         {
 721                         $config{cross_compile_prefix}=$1;
 722                         }
 723                 elsif (/^--config=(.*)$/)
 724                         {
 725                         read_config $1;
 726                         }
 727                 elsif (/^-[lL](.*)$/ or /^-Wl,/)
 728                         {
 729                         $libs.=$_." ";
 730                         }
 731                 elsif (/^-D(.*)$/)
 732                         {
 733                         push @user_defines, $1;
 734                         }
 735                 else    # common if (/^[-+]/), just pass down...
 736                         {
 737                         $_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
 738                         $user_cflags.=" ".$_;
 739                         }
 740                 }
 741         else
 742                 {
 743                 die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
 744                 $target=$_;
 745                 }
 746         unless ($_ eq $target || /^no-/ || /^disable-/)
 747                 {
 748                 # "no-..." follows later after implied disactivations
 749                 # have been derived.  (Don't take this too seriously,
 750                 # we really only write OPTIONS to the Makefile out of
 751                 # nostalgia.)
 752
 753                 if ($config{options} eq "")
 754                         { $config{options} = $_; }
 755                 else
 756                         { $config{options} .= " ".$_; }
 757                 }
 758
 759         if (defined($config{api}) && !exists $apitable->{$config{api}}) {
 760                 die "***** Unsupported api compatibility level: $config{api}\n",
 761         }
 762
 763         if (keys %deprecated_options)
 764                 {
 765                 warn "***** Deprecated options: ",
 766                         join(", ", keys %deprecated_options), "\n";
 767                 }
 768         if (keys %unsupported_options)
 769                 {
 770                 die "***** Unsupported options: ",
 771                         join(", ", keys %unsupported_options), "\n";
 772                 }
 773         }
 774
 775 if ($config{fips})
 776         {
 777         delete $disabled{"shared"} if ($disabled{"shared"} =~ /^default/);
 778         }
 779 else
 780         {
 781         @{$config{dirs}} = grep !/^fips$/, @{$config{dirs}};
 782         }
 783
 784 my @tocheckfor = (keys %disabled);
 785 while (@tocheckfor) {
 786     my %new_tocheckfor = ();
 787     my @cascade_copy = (@disable_cascades);
 788     while (@cascade_copy) {
 789         my ($test, $descendents) = (shift @cascade_copy, shift @cascade_copy);
 790         if (ref($test) eq "CODE" ? $test->() : defined($disabled{$test})) {
 791             foreach(grep { !defined($disabled{$_}) } @$descendents) {
 792                 $new_tocheckfor{$_} = 1; $disabled{$_} = "forced";
 793             }
 794         }
 795     }
 796     @tocheckfor = (keys %new_tocheckfor);
 797 }
 798
 799 if ($target eq "TABLE") {
 800     foreach (sort keys %table) {
 801         print_table_entry($_, "TABLE");
 802     }
 803     exit 0;
 804 }
 805
 806 if ($target eq "LIST") {
 807     foreach (sort keys %table) {
 808         print $_,"\n" unless $table{$_}->{template};
 809     }
 810     exit 0;
 811 }
 812
 813 if ($target eq "HASH") {
 814     print "%table = (\n";
 815     foreach (sort keys %table) {
 816         print_table_entry($_, "HASH");
 817     }
 818     exit 0;
 819 }
 820
 821 # Backward compatibility?
 822 if ($target =~ m/^CygWin32(-.*)$/) {
 823     $target = "Cygwin".$1;
 824 }
 825
 826 foreach (sort (keys %disabled))
 827         {
 828         $config{options} .= " no-$_";
 829
 830         printf "    no-%-12s %-10s", $_, "[$disabled{$_}]";
 831
 832         if (/^dso$/)
 833                 { }
 834         elsif (/^threads$/)
 835                 { }
 836         elsif (/^shared$/)
 837                 { }
 838         elsif (/^pic$/)
 839                 { }
 840         elsif (/^zlib$/)
 841                 { }
 842         elsif (/^dynamic-engine$/)
 843                 { }
 844         elsif (/^makedepend$/)
 845                 { }
 846         elsif (/^zlib-dynamic$/)
 847                 { }
 848         elsif (/^sse2$/)
 849                 { $no_sse2 = 1; }
 850         elsif (/^engine$/)
 851                 {
 852                 @{$config{dirs}} = grep !/^engines$/, @{$config{dirs}};
 853                 @{$config{sdirs}} = grep !/^engine$/, @{$config{sdirs}};
 854                 push @{$config{openssl_other_defines}}, "OPENSSL_NO_ENGINE";
 855                 }
 856         else
 857                 {
 858                 my ($ALGO, $algo);
 859                 ($ALGO = $algo = $_) =~ tr/[\-a-z]/[_A-Z]/;
 860
 861                 if (/^asm$/ || /^err$/ || /^hw$/ || /^hw-/ || /^async$/
 862                                 || /^autoalginit/ || /^autoerrinit/)
 863                         {
 864                         push @{$config{openssl_other_defines}}, "OPENSSL_NO_$ALGO";
 865                         print " OPENSSL_NO_$ALGO";
 866
 867                         if (/^err$/)    { push @user_defines, "OPENSSL_NO_ERR"; }
 868                         }
 869                 else
 870                         {
 871                         ($ALGO,$algo) = ("RMD160","rmd160") if ($algo eq "ripemd");
 872
 873                         push @{$config{openssl_algorithm_defines}}, "OPENSSL_NO_$ALGO";
 874                         print " OPENSSL_NO_$ALGO";
 875
 876                         # fix-up crypto/directory name(s)
 877                         $algo="whrlpool" if $algo eq "whirlpool";
 878                         $algo="ripemd" if $algo eq "rmd160";
 879                         @{$config{sdirs}} = grep { $_ ne $algo} @{$config{sdirs}};
 880
 881                         print " (skip dir)";
 882                         }
 883                 }
 884
 885         print "\n";
 886         }
 887
 888 print "Configuring for $target\n";
 889
 890 # Support for legacy targets having a name starting with 'debug-'
 891 my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
 892 if ($d) {
 893     $config{build_type} = "debug";
 894
 895     # If we do not find debug-foo in the table, the target is set to foo.
 896     if (!$table{$target}) {
 897         $target = $t;
 898     }
 899 }
 900 $config{target} = $target;
 901 my %target = resolve_config($target);
 902
 903 &usage if (!%target || $target{template});
 904
 905 %target = ( %{$table{DEFAULTS}}, %target );
 906
 907 $target{exe_extension}="";
 908 $target{exe_extension}=".exe" if ($config{target} eq "DJGPP"
 909                                   || $config{target} =~ /^(?:Cygwin|mingw)/);
 910 $target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
 911
 912 ($target{shared_extension_simple}=$target{shared_extension})
 913     =~ s|\.\$\(SHLIB_MAJOR\)\.\$\(SHLIB_MINOR\)||;
 914 $target{dso_extension}=$target{shared_extension_simple};
 915 ($target{shared_import_extension}=$target{shared_extension_simple}.".a")
 916     if ($config{target} =~ /^(?:Cygwin|mingw)/);
 917
 918
 919 $config{cross_compile_prefix} = $ENV{'CROSS_COMPILE'}
 920     if $config{cross_compile_prefix} eq "";
 921
 922 # Allow overriding the names of some tools.  USE WITH CARE
 923 $config{perl} =    $ENV{'PERL'}    || ($^O ne "VMS" ? $^X : "perl");
 924 $target{cc} =      $ENV{'CC'}      || $target{cc}      || "cc";
 925 $target{ranlib} =  $ENV{'RANLIB'}  || $target{ranlib}  ||
 926                    (which("$config{cross_compile_prefix}ranlib") ?
 927                           "\$(CROSS_COMPILE)ranlib" : "true");
 928 $target{ar} =      $ENV{'AR'}      || $target{ar}      || "ar";
 929 $target{nm} =      $ENV{'NM'}      || $target{nm}      || "nm";
 930 $target{rc} =
 931     $ENV{'RC'}  || $ENV{'WINDRES'} || $target{rc}      || "windres";
 932
 933 # For cflags, lflags, plib_lflags, ex_libs and defines, add the debug_
 934 # or release_ attributes.
 935 # Do it in such a way that no spurious space is appended (hence the grep).
 936 $config{defines} = [];
 937 $config{cflags} = "";
 938 $config{ex_libs} = "";
 939 $config{shared_ldflag} = "";
 940
 941 # Make sure build_scheme is consistent.
 942 $target{build_scheme} = [ $target{build_scheme} ]
 943     if ref($target{build_scheme}) ne "ARRAY";
 944
 945 my ($builder, $builder_platform, @builder_opts) =
 946     @{$target{build_scheme}};
 947
 948 push @{$config{defines}}, "NDEBUG"    if $config{build_type} eq "release";
 949
 950 if ($target =~ /^mingw/ && `$target{cc} --target-help 2>&1` =~ m/-mno-cygwin/m)
 951         {
 952         $config{cflags} .= " -mno-cygwin";
 953         $config{shared_ldflag} .= " -mno-cygwin";
 954         }
 955
 956 if ($target =~ /linux.*-mips/ && !$disabled{asm} && $user_cflags !~ /-m(ips|arch=)/) {
 957         # minimally required architecture flags for assembly modules
 958         $config{cflags}="-mips2 $config{cflags}" if ($target =~ /mips32/);
 959         $config{cflags}="-mips3 $config{cflags}" if ($target =~ /mips64/);
 960 }
 961
 962 my $no_shared_warn=0;
 963 my $no_user_cflags=0;
 964 my $no_user_defines=0;
 965
 966 # The DSO code currently always implements all functions so that no
 967 # applications will have to worry about that from a compilation point
 968 # of view. However, the "method"s may return zero unless that platform
 969 # has support compiled in for them. Currently each method is enabled
 970 # by a define "DSO_<name>" ... we translate the "dso_scheme" config
 971 # string entry into using the following logic;
 972 if (!$disabled{dso} && $target{dso_scheme} ne "")
 973         {
 974         $target{dso_scheme} =~ tr/[a-z]/[A-Z]/;
 975         if ($target{dso_scheme} eq "DLFCN")
 976                 {
 977                 unshift @{$config{defines}}, "DSO_DLFCN", "HAVE_DLFCN_H";
 978                 }
 979         elsif ($target{dso_scheme} eq "DLFCN_NO_H")
 980                 {
 981                 unshift @{$config{defines}}, "DSO_DLFCN";
 982                 }
 983         else
 984                 {
 985                 unshift @{$config{defines}}, "DSO_$target{dso_scheme}";
 986                 }
 987         }
 988
 989 $config{ex_libs}="$libs$config{ex_libs}" if ($libs ne "");
 990
 991 if ($disabled{asm})
 992         {
 993         if ($config{fips})
 994                 {
 995                 @{$config{defines}} = grep !/^[BL]_ENDIAN$/, @{$config{defines}};
 996                 @{$target{defines}} = grep !/^[BL]_ENDIAN$/, @{$target{defines}};
 997                 }
 998         }
 999
1000 # If threads aren't disabled, check how possible they are
1001 unless ($disabled{threads}) {
1002     if ($auto_threads) {
1003         # Enabled by default, disable it forcibly if unavailable
1004         if ($target{thread_scheme} eq "(unknown)") {
1005             $disabled{threads} = "unavailable";
1006         }
1007     } else {
1008         # The user chose to enable threads explicitly, let's see
1009         # if there's a chance that's possible
1010         if ($target{thread_scheme} eq "(unknown)") {
1011             # If the user asked for "threads" and we don't have internal
1012             # knowledge how to do it, [s]he is expected to provide any
1013             # system-dependent compiler options that are necessary.  We
1014             # can't truly check that the given options are correct, but
1015             # we expect the user to know what [s]He is doing.
1016             if ($no_user_cflags && $no_user_defines) {
1017                 die "You asked for multi-threading support, but didn't\n"
1018                     ,"provide any system-specific compiler options\n";
1019             }
1020         }
1021     }
1022 }
1023
1024 # If threads still aren't disabled, add a C macro to ensure the source
1025 # code knows about it.  Any other flag is taken care of by the configs.
1026 unless($disabled{threads}) {
1027     foreach (("defines", "openssl_thread_defines")) {
1028         push @{$config{$_}}, "OPENSSL_THREADS";
1029     }
1030 }
1031
1032 # With "deprecated" disable all deprecated features.
1033 if (defined($disabled{"deprecated"})) {
1034         $config{api} = $maxapi;
1035 }
1036
1037 if ($target{shared_target} eq "")
1038         {
1039         $no_shared_warn = 1
1040             if ((!$disabled{shared} || !$disabled{"dynamic-engine"})
1041                 && !$config{fips});
1042         $disabled{shared} = "no-shared-target";
1043         $disabled{pic} = $disabled{shared} = $disabled{"dynamic-engine"} =
1044             "no-shared-target";
1045         }
1046
1047 if ($disabled{"dynamic-engine"}) {
1048         push @{$config{defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
1049         $config{dynamic_engines} = 0;
1050 } else {
1051         push @{$config{defines}}, "OPENSSL_NO_STATIC_ENGINE";
1052         $config{dynamic_engines} = 1;
1053 }
1054
1055 unless ($disabled{"fuzz-libfuzzer"}) {
1056     push @{$config{dirs}}, "fuzz";
1057     $config{cflags} .= "-fsanitize-coverage=edge,indirect-calls ";
1058 }
1059
1060 unless ($disabled{"fuzz-afl"}) {
1061     push @{$config{dirs}}, "fuzz";
1062 }
1063
1064 unless ($disabled{asan}) {
1065     $config{cflags} .= "-fsanitize=address ";
1066 }
1067
1068 unless ($disabled{ubsan}) {
1069     # -DPEDANTIC or -fnosanitize=aligmnent may also be required on some
1070     # platforms.
1071     $config{cflags} .= "-fsanitize=undefined -fno-sanitize-recover=all ";
1072 }
1073
1074 unless ($disabled{fuzz} && $disabled{asan} && $disabled{ubsan}) {
1075     $config{cflags} .= "-fno-omit-frame-pointer -g ";
1076 }
1077 #
1078 # Platform fix-ups
1079 #
1080
1081 # This saves the build files from having to check
1082 if ($disabled{pic})
1083         {
1084         $target{shared_cflag} = $target{shared_ldflag} =
1085                 $target{shared_rcflag} = "";
1086         }
1087 else
1088         {
1089         push @{$config{defines}}, "OPENSSL_PIC";
1090         }
1091
1092 if ($target{sys_id} ne "")
1093         {
1094         push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
1095         }
1096
1097 unless ($disabled{asm}) {
1098     $target{cpuid_asm_src}=$table{DEFAULTS}->{cpuid_asm_src} if ($config{processor} eq "386");
1099     $target{bn_asm_src} =~ s/\w+-gf2m.c// if (defined($disabled{ec2m}));
1100
1101     # bn-586 is the only one implementing bn_*_part_words
1102     push @{$config{defines}}, "OPENSSL_BN_ASM_PART_WORDS" if ($target{bn_asm_src} =~ /bn-586/);
1103     push @{$config{defines}}, "OPENSSL_IA32_SSE2" if (!$no_sse2 && $target{bn_asm_src} =~ /86/);
1104
1105     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT" if ($target{bn_asm_src} =~ /-mont/);
1106     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT5" if ($target{bn_asm_src} =~ /-mont5/);
1107     push @{$config{defines}}, "OPENSSL_BN_ASM_GF2m" if ($target{bn_asm_src} =~ /-gf2m/);
1108
1109     if ($config{fips}) {
1110         push @{$config{openssl_other_defines}}, "OPENSSL_FIPS";
1111     }
1112
1113     if ($target{sha1_asm_src}) {
1114         push @{$config{defines}}, "SHA1_ASM"   if ($target{sha1_asm_src} =~ /sx86/ || $target{sha1_asm_src} =~ /sha1/);
1115         push @{$config{defines}}, "SHA256_ASM" if ($target{sha1_asm_src} =~ /sha256/);
1116         push @{$config{defines}}, "SHA512_ASM" if ($target{sha1_asm_src} =~ /sha512/);
1117     }
1118     if ($target{md5_asm_src}) {
1119         push @{$config{defines}}, "MD5_ASM";
1120     }
1121     $target{cast_asm_src}=$table{DEFAULTS}->{cast_asm_src} unless $disabled{pic}; # CAST assembler is not PIC
1122     if ($target{rmd160_asm_src}) {
1123         push @{$config{defines}}, "RMD160_ASM";
1124     }
1125     if ($target{aes_asm_src}) {
1126         push @{$config{defines}}, "AES_ASM" if ($target{aes_asm_src} =~ m/\baes-/);;
1127         # aes-ctr.fake is not a real file, only indication that assembler
1128         # module implements AES_ctr32_encrypt...
1129         push @{$config{defines}}, "AES_CTR_ASM" if ($target{aes_asm_src} =~ s/\s*aes-ctr\.fake//);
1130         # aes-xts.fake indicates presence of AES_xts_[en|de]crypt...
1131         push @{$config{defines}}, "AES_XTS_ASM" if ($target{aes_asm_src} =~ s/\s*aes-xts\.fake//);
1132         $target{aes_asm_src} =~ s/\s*(vpaes|aesni)-x86\.s//g if ($no_sse2);
1133         push @{$config{defines}}, "VPAES_ASM" if ($target{aes_asm_src} =~ m/vpaes/);
1134         push @{$config{defines}}, "BSAES_ASM" if ($target{aes_asm_src} =~ m/bsaes/);
1135     }
1136     if ($target{wp_asm_src} =~ /mmx/) {
1137         if ($config{processor} eq "386") {
1138             $target{wp_asm_src}=$table{DEFAULTS}->{wp_asm_src};
1139         } elsif (!$disabled{"whirlpool"}) {
1140             push @{$config{defines}}, "WHIRLPOOL_ASM";
1141         }
1142     }
1143     if ($target{modes_asm_src} =~ /ghash-/) {
1144         push @{$config{defines}}, "GHASH_ASM";
1145     }
1146     if ($target{ec_asm_src} =~ /ecp_nistz256/) {
1147         push @{$config{defines}}, "ECP_NISTZ256_ASM";
1148     }
1149     if ($target{poly1305_asm_src} ne "") {
1150         push @{$config{defines}}, "POLY1305_ASM";
1151     }
1152 }
1153
1154 my $ecc = $target{cc};
1155 if ($^O ne "VMS" && !$disabled{makedepend}) {
1156     # Is the compiler gcc or clang?  $ecc is used below to see if
1157     # error-checking can be turned on.
1158     my $ccpcc = "$config{cross_compile_prefix}$target{cc}";
1159     open(PIPE, "$ccpcc --version 2>&1 |");
1160     my $lines = 2;
1161     while ( <PIPE> ) {
1162         # Find the version number and save the major.
1163         m|(?:.*)\b(\d+)\.\d+\.\d+\b(?:.*)|;
1164         my $compiler_major = $1;
1165         # We know that GNU C version 3 and up as well as all clang
1166         # versions support dependency generation
1167         $config{makedepprog} = $ccpcc
1168             if (/clang/ || (/gcc/ && $compiler_major > 3));
1169         $ecc = "clang" if /clang/;
1170         $ecc = "gcc" if /gcc/;
1171         last if ($config{makedepprog} || !$lines--);
1172     }
1173     close(PIPE);
1174
1175     $config{makedepprog} = which('makedepend') unless $config{makedepprog};
1176     $disabled{makedepend} = "unavailable" unless $config{makedepprog};
1177 }
1178
1179
1180
1181 # Deal with bn_ops ###################################################
1182
1183 $config{bn_ll}                  =0;
1184 $config{export_var_as_fn}       =0;
1185 my $def_int="unsigned int";
1186 $config{rc4_int}                =$def_int;
1187 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
1188
1189 my $count = 0;
1190 foreach (sort split(/\s+/,$target{bn_ops})) {
1191     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
1192     $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
1193     $config{bn_ll}=1                            if $_ eq 'BN_LLONG';
1194     $config{rc4_int}="unsigned char"            if $_ eq 'RC4_CHAR';
1195     ($config{b64l},$config{b64},$config{b32})
1196         =(0,1,0)                                if $_ eq 'SIXTY_FOUR_BIT';
1197     ($config{b64l},$config{b64},$config{b32})
1198         =(1,0,0)                                if $_ eq 'SIXTY_FOUR_BIT_LONG';
1199     ($config{b64l},$config{b64},$config{b32})
1200         =(0,0,1)                                if $_ eq 'THIRTY_TWO_BIT';
1201 }
1202 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
1203     if $count > 1;
1204
1205
1206 # Hack cflags for better warnings (dev option) #######################
1207
1208 # "Stringify" the C flags string.  This permits it to be made part of a string
1209 # and works as well on command lines.
1210 $config{cflags} =~ s/([\\\"])/\\$1/g;
1211
1212 if (defined($config{api})) {
1213     $config{openssl_api_defines} = [ "OPENSSL_MIN_API=".$apitable->{$config{api}} ];
1214     my $apiflag = sprintf("OPENSSL_API_COMPAT=%s", $apitable->{$config{api}});
1215     push @{$config{defines}}, $apiflag;
1216 }
1217
1218 if ($strict_warnings)
1219         {
1220         my $wopt;
1221         die "ERROR --strict-warnings requires gcc or clang"
1222             unless $ecc eq 'gcc' || $ecc eq 'clang';
1223         foreach $wopt (split /\s+/, $gcc_devteam_warn)
1224                 {
1225                 $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1226                 }
1227         if ($ecc eq "clang")
1228                 {
1229                 foreach $wopt (split /\s+/, $clang_devteam_warn)
1230                         {
1231                         $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1232                         }
1233                 }
1234         }
1235
1236 unless ($disabled{"crypto-mdebug-backtrace"})
1237         {
1238         foreach my $wopt (split /\s+/, $memleak_devteam_backtrace)
1239                 {
1240                 $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1241                 }
1242         if ($target =~ /^BSD-/)
1243                 {
1244                 $config{ex_libs} .= " -lexecinfo";
1245                 }
1246         }
1247
1248 if ($user_cflags ne "") { $config{cflags}="$config{cflags}$user_cflags"; }
1249 else                    { $no_user_cflags=1;  }
1250 if (@user_defines) { $config{defines}=[ @{$config{defines}}, @user_defines ]; }
1251 else               { $no_user_defines=1;    }
1252
1253 # ALL MODIFICATIONS TO %config and %target MUST BE DONE FROM HERE ON
1254
1255 unless ($disabled{afalgeng}) {
1256     $config{afalgeng}="";
1257     if ($target =~ m/^linux/) {
1258         my $minver = 4*10000 + 1*100 + 0;
1259         if ($config{cross_compile_prefix} eq "") {
1260             my $verstr = `uname -r`;
1261             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
1262             ($mi2) = $mi2 =~ /(\d+)/;
1263             my $ver = $ma*10000 + $mi1*100 + $mi2;
1264             if ($ver < $minver) {
1265                 $disabled{afalgeng} = "too-old-kernel";
1266             } else {
1267                 push @{$config{engdirs}}, "afalg";
1268             }
1269         } else {
1270             $disabled{afalgeng} = "cross-compiling";
1271         }
1272     } else {
1273         $disabled{afalgeng}  = "not-linux";
1274     }
1275 }
1276
1277 push @{$config{openssl_other_defines}}, "OPENSSL_NO_AFALGENG" if ($disabled{afalgeng});
1278
1279 # If we use the unified build, collect information from build.info files
1280 my %unified_info = ();
1281
1282 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
1283 if ($builder eq "unified") {
1284     # Store the name of the template file we will build the build file from
1285     # in %config.  This may be useful for the build file itself.
1286     my $build_file_template;
1287
1288     for my $filename (( $builder_platform."-".$target{build_file}.".tmpl",
1289                         $target{build_file}.".tmpl" )) {
1290         if (defined $ENV{$local_config_envname}) {
1291             if ($^O eq 'VMS') {
1292                 # VMS environment variables are logical names,
1293                 # which can be used as is
1294                 $build_file_template = $local_config_envname . ':' . $filename;
1295             } else {
1296                 $build_file_template = catfile($ENV{$local_config_envname},
1297                                                $filename);
1298             }
1299         }
1300
1301         last if -f $build_file_template;
1302
1303         $build_file_template = catfile($srcdir, "Configurations", $filename);
1304
1305         last if -f $build_file_template;
1306     }
1307     $config{build_file_template} = $build_file_template;
1308
1309     use lib catdir(dirname(__FILE__),"util");
1310     use with_fallback qw(Text::Template);
1311
1312     sub cleandir {
1313         my $base = shift;
1314         my $dir = shift;
1315         my $relativeto = shift || ".";
1316
1317         $dir = catdir($base,$dir) unless isabsolute($dir);
1318
1319         # Make sure the directories we're building in exists
1320         mkpath($dir);
1321
1322         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
1323         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
1324         return $res;
1325     }
1326
1327     sub cleanfile {
1328         my $base = shift;
1329         my $file = shift;
1330         my $relativeto = shift || ".";
1331
1332         $file = catfile($base,$file) unless isabsolute($file);
1333
1334         my $d = dirname($file);
1335         my $f = basename($file);
1336
1337         # Make sure the directories we're building in exists
1338         mkpath($d);
1339
1340         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
1341         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
1342         return $res;
1343     }
1344
1345     my @build_infos = ( [ ".", "build.info" ] );
1346     foreach (@{$config{dirs}}) {
1347         push @build_infos, [ $_, "build.info" ]
1348             if (-f catfile($srcdir, $_, "build.info"));
1349     }
1350     foreach (@{$config{sdirs}}) {
1351         push @build_infos, [ catdir("crypto", $_), "build.info" ]
1352             if (-f catfile($srcdir, "crypto", $_, "build.info"));
1353     }
1354     foreach (@{$config{engdirs}}) {
1355         push @build_infos, [ catdir("engines", $_), "build.info" ]
1356             if (-f catfile($srcdir, "engines", $_, "build.info"));
1357     }
1358
1359     $config{build_infos} = [ ];
1360
1361     foreach (@build_infos) {
1362         my $sourced = catdir($srcdir, $_->[0]);
1363         my $buildd = catdir($blddir, $_->[0]);
1364
1365         mkpath($buildd);
1366
1367         my $f = $_->[1];
1368         # The basic things we're trying to build
1369         my @programs = ();
1370         my @libraries = ();
1371         my @engines = ();
1372         my @scripts = ();
1373         my @extra = ();
1374         my @overrides = ();
1375         my @intermediates = ();
1376         my @rawlines = ();
1377
1378         my %ordinals = ();
1379         my %sources = ();
1380         my %shared_sources = ();
1381         my %includes = ();
1382         my %depends = ();
1383         my %renames = ();
1384         my %sharednames = ();
1385         my %generate = ();
1386
1387         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
1388         my $template = Text::Template->new(TYPE => 'FILE',
1389                                            SOURCE => catfile($sourced, $f));
1390         die "Something went wrong with $sourced/$f: $!\n" unless $template;
1391         my @text =
1392             split /^/m,
1393             $template->fill_in(HASH => { config => \%config,
1394                                          target => \%target,
1395                                          disabled => \%disabled,
1396                                          withargs => \%withargs,
1397                                          builddir => abs2rel($buildd, $blddir),
1398                                          sourcedir => abs2rel($sourced, $blddir),
1399                                          buildtop => abs2rel($blddir, $blddir),
1400                                          sourcetop => abs2rel($srcdir, $blddir) },
1401                                DELIMITERS => [ "{-", "-}" ]);
1402
1403         # The top item of this stack has the following values
1404         # -2 positive already run and we found ELSE (following ELSIF should fail)
1405         # -1 positive already run (skip until ENDIF)
1406         # 0 negatives so far (if we're at a condition, check it)
1407         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
1408         # 2 positive ELSE (following ELSIF should fail)
1409         my @skip = ();
1410         collect_information(
1411             collect_from_array([ @text ],
1412                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
1413                                                 $l1 =~ s/\\$//; $l1.$l2 }),
1414             # Info we're looking for
1415             qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
1416             => sub {
1417                 if (! @skip || $skip[$#skip] > 0) {
1418                     push @skip, !! $1;
1419                 } else {
1420                     push @skip, -1;
1421                 }
1422             },
1423             qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
1424             => sub { die "ELSIF out of scope" if ! @skip;
1425                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
1426                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
1427                      $skip[$#skip] = !! $1
1428                          if $skip[$#skip] == 0; },
1429             qr/^\s*ELSE\s*$/
1430             => sub { die "ELSE out of scope" if ! @skip;
1431                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
1432                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
1433             qr/^\s*ENDIF\s*$/
1434             => sub { die "ENDIF out of scope" if ! @skip;
1435                      pop @skip; },
1436             qr/^\s*PROGRAMS\s*=\s*(.*)\s*$/
1437             => sub { push @programs, tokenize($1)
1438                          if !@skip || $skip[$#skip] > 0 },
1439             qr/^\s*LIBS\s*=\s*(.*)\s*$/
1440             => sub { push @libraries, tokenize($1)
1441                          if !@skip || $skip[$#skip] > 0 },
1442             qr/^\s*ENGINES\s*=\s*(.*)\s*$/
1443             => sub { push @engines, tokenize($1)
1444                          if !@skip || $skip[$#skip] > 0 },
1445             qr/^\s*SCRIPTS\s*=\s*(.*)\s*$/
1446             => sub { push @scripts, tokenize($1)
1447                          if !@skip || $skip[$#skip] > 0 },
1448             qr/^\s*EXTRA\s*=\s*(.*)\s*$/
1449             => sub { push @extra, tokenize($1)
1450                          if !@skip || $skip[$#skip] > 0 },
1451             qr/^\s*OVERRIDES\s*=\s*(.*)\s*$/
1452             => sub { push @overrides, tokenize($1)
1453                          if !@skip || $skip[$#skip] > 0 },
1454
1455             qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
1456             => sub { push @{$ordinals{$1}}, tokenize($2)
1457                          if !@skip || $skip[$#skip] > 0 },
1458             qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1459             => sub { push @{$sources{$1}}, tokenize($2)
1460                          if !@skip || $skip[$#skip] > 0 },
1461             qr/^\s*SHARED_SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1462             => sub { push @{$shared_sources{$1}}, tokenize($2)
1463                          if !@skip || $skip[$#skip] > 0 },
1464             qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1465             => sub { push @{$includes{$1}}, tokenize($2)
1466                          if !@skip || $skip[$#skip] > 0 },
1467             qr/^\s*DEPEND\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1468             => sub { push @{$depends{$1}}, tokenize($2)
1469                          if !@skip || $skip[$#skip] > 0 },
1470             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1471             => sub { push @{$generate{$1}}, $2
1472                          if !@skip || $skip[$#skip] > 0 },
1473             qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1474             => sub { push @{$renames{$1}}, tokenize($2)
1475                          if !@skip || $skip[$#skip] > 0 },
1476             qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1477             => sub { push @{$sharednames{$1}}, tokenize($2)
1478                          if !@skip || $skip[$#skip] > 0 },
1479             qr/^\s*BEGINRAW\[((?:\\.|[^\\\]])+)\]\s*$/
1480             => sub {
1481                 my $lineiterator = shift;
1482                 my $target_kind = $1;
1483                 while (defined $lineiterator->()) {
1484                     s|\R$||;
1485                     if (/^\s*ENDRAW\[((?:\\.|[^\\\]])+)\]\s*$/) {
1486                         die "ENDRAW doesn't match BEGINRAW"
1487                             if $1 ne $target_kind;
1488                         last;
1489                     }
1490                     next if @skip && $skip[$#skip] <= 0;
1491                     push @rawlines,  $_
1492                         if ($target_kind eq $target{build_file}
1493                             || $target_kind eq $target{build_file}."(".$builder_platform.")");
1494                 }
1495             },
1496             qr/^(?:#.*|\s*)$/ => sub { },
1497             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
1498             "BEFORE" => sub {
1499                 if ($buildinfo_debug) {
1500                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
1501                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1502                 }
1503             },
1504             "AFTER" => sub {
1505                 if ($buildinfo_debug) {
1506                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1507                 }
1508             },
1509             );
1510         die "runaway IF?" if (@skip);
1511
1512         foreach (keys %renames) {
1513             die "$_ renamed to more than one thing: "
1514                 ,join(" ", @{$renames{$_}}),"\n"
1515                 if scalar @{$renames{$_}} > 1;
1516             my $dest = cleanfile($buildd, $_, $blddir);
1517             my $to = cleanfile($buildd, $renames{$_}->[0], $blddir);
1518             die "$dest renamed to more than one thing: "
1519                 ,$unified_info{rename}->{$dest}, $to
1520                 unless !defined($unified_info{rename}->{$dest})
1521                 or $unified_info{rename}->{$dest} eq $to;
1522             $unified_info{rename}->{$dest} = $to;
1523         }
1524
1525         foreach (@programs) {
1526             my $program = cleanfile($buildd, $_, $blddir);
1527             if ($unified_info{rename}->{$program}) {
1528                 $program = $unified_info{rename}->{$program};
1529             }
1530             $unified_info{programs}->{$program} = 1;
1531         }
1532
1533         foreach (@libraries) {
1534             my $library = cleanfile($buildd, $_, $blddir);
1535             if ($unified_info{rename}->{$library}) {
1536                 $library = $unified_info{rename}->{$library};
1537             }
1538             $unified_info{libraries}->{$library} = 1;
1539         }
1540
1541         die <<"EOF" if scalar @engines and !$config{dynamic_engines};
1542 ENGINES can only be used if configured with 'dynamic-engine'.
1543 This is usually a fault in a build.info file.
1544 EOF
1545         foreach (@engines) {
1546             my $library = cleanfile($buildd, $_, $blddir);
1547             if ($unified_info{rename}->{$library}) {
1548                 $library = $unified_info{rename}->{$library};
1549             }
1550             $unified_info{engines}->{$library} = 1;
1551         }
1552
1553         foreach (@scripts) {
1554             my $script = cleanfile($buildd, $_, $blddir);
1555             if ($unified_info{rename}->{$script}) {
1556                 $script = $unified_info{rename}->{$script};
1557             }
1558             $unified_info{scripts}->{$script} = 1;
1559         }
1560
1561         foreach (@extra) {
1562             my $extra = cleanfile($buildd, $_, $blddir);
1563             $unified_info{extra}->{$extra} = 1;
1564         }
1565
1566         foreach (@overrides) {
1567             my $override = cleanfile($buildd, $_, $blddir);
1568             $unified_info{overrides}->{$override} = 1;
1569         }
1570
1571         push @{$unified_info{rawlines}}, @rawlines;
1572
1573         unless ($disabled{shared}) {
1574             # Check sharednames.
1575             foreach (keys %sharednames) {
1576                 my $dest = cleanfile($buildd, $_, $blddir);
1577                 if ($unified_info{rename}->{$dest}) {
1578                     $dest = $unified_info{rename}->{$dest};
1579                 }
1580                 die "shared_name for $dest with multiple values: "
1581                     ,join(" ", @{$sharednames{$_}}),"\n"
1582                     if scalar @{$sharednames{$_}} > 1;
1583                 my $to = cleanfile($buildd, $sharednames{$_}->[0], $blddir);
1584                 die "shared_name found for a library $dest that isn't defined\n"
1585                     unless $unified_info{libraries}->{$dest};
1586                 die "shared_name for $dest with multiple values: "
1587                     ,$unified_info{sharednames}->{$dest}, ", ", $to
1588                     unless !defined($unified_info{sharednames}->{$dest})
1589                     or $unified_info{sharednames}->{$dest} eq $to;
1590                 $unified_info{sharednames}->{$dest} = $to;
1591             }
1592
1593             # Additionally, we set up sharednames for libraries that don't
1594             # have any, as themselves.
1595             foreach (keys %{$unified_info{libraries}}) {
1596                 if (!defined $unified_info{sharednames}->{$_}) {
1597                     $unified_info{sharednames}->{$_} = $_
1598                 }
1599             }
1600         }
1601
1602         foreach (keys %ordinals) {
1603             my $dest = $_;
1604             my $ddest = cleanfile($buildd, $_, $blddir);
1605             if ($unified_info{rename}->{$ddest}) {
1606                 $ddest = $unified_info{rename}->{$ddest};
1607             }
1608             foreach (@{$ordinals{$dest}}) {
1609                 my %known_ordinals =
1610                     (
1611                      crypto =>
1612                      cleanfile($sourced, catfile("util", "libcrypto.num"), $blddir),
1613                      ssl =>
1614                      cleanfile($sourced, catfile("util", "libssl.num"), $blddir)
1615                     );
1616                 my $o = $known_ordinals{$_};
1617                 die "Ordinals for $ddest defined more than once\n"
1618                     if $unified_info{ordinals}->{$ddest};
1619                 $unified_info{ordinals}->{$ddest} = [ $_, $o ];
1620             }
1621         }
1622
1623         foreach (keys %sources) {
1624             my $dest = $_;
1625             my $ddest = cleanfile($buildd, $_, $blddir);
1626             if ($unified_info{rename}->{$ddest}) {
1627                 $ddest = $unified_info{rename}->{$ddest};
1628             }
1629             foreach (@{$sources{$dest}}) {
1630                 my $s = cleanfile($sourced, $_, $blddir);
1631
1632                 # If it isn't in the source tree, we assume it's generated
1633                 # in the build tree
1634                 if (! -f $s) {
1635                     $s = cleanfile($buildd, $_, $blddir);
1636                 }
1637                 # We recognise C and asm files
1638                 if ($s =~ /\.[csS]\b$/) {
1639                     (my $o = $_) =~ s/\.[csS]\b$/.o/;
1640                     $o = cleanfile($buildd, $o, $blddir);
1641                     $unified_info{sources}->{$ddest}->{$o} = 1;
1642                     $unified_info{sources}->{$o}->{$s} = 1;
1643                 } else {
1644                     $unified_info{sources}->{$ddest}->{$s} = 1;
1645                 }
1646             }
1647         }
1648
1649         foreach (keys %shared_sources) {
1650             my $dest = $_;
1651             my $ddest = cleanfile($buildd, $_, $blddir);
1652             if ($unified_info{rename}->{$ddest}) {
1653                 $ddest = $unified_info{rename}->{$ddest};
1654             }
1655             foreach (@{$shared_sources{$dest}}) {
1656                 my $s = cleanfile($sourced, $_, $blddir);
1657
1658                 # If it isn't in the source tree, we assume it's generated
1659                 # in the build tree
1660                 if (! -f $s) {
1661                     $s = cleanfile($buildd, $_, $blddir);
1662                 }
1663                 # We recognise C and asm files
1664                 if ($s =~ /\.[csS]\b$/) {
1665                     (my $o = $_) =~ s/\.[csS]\b$/.o/;
1666                     $o = cleanfile($buildd, $o, $blddir);
1667                     $unified_info{shared_sources}->{$ddest}->{$o} = 1;
1668                     $unified_info{sources}->{$o}->{$s} = 1;
1669                 } else {
1670                     die "unrecognised source file type for shared library: $s\n";
1671                 }
1672             }
1673         }
1674
1675         foreach (keys %generate) {
1676             my $dest = $_;
1677             my $ddest = cleanfile($buildd, $_, $blddir);
1678             if ($unified_info{rename}->{$ddest}) {
1679                 $ddest = $unified_info{rename}->{$ddest};
1680             }
1681             die "more than one generator for $dest: "
1682                     ,join(" ", @{$generate{$_}}),"\n"
1683                     if scalar @{$generate{$_}} > 1;
1684             my @generator = split /\s+/, $generate{$dest}->[0];
1685             $generator[0] = cleanfile($sourced, $generator[0], $blddir),
1686             $unified_info{generate}->{$ddest} = [ @generator ];
1687         }
1688
1689         foreach (keys %depends) {
1690             my $dest = $_;
1691             my $ddest = cleanfile($sourced, $_, $blddir);
1692
1693             # If the destination doesn't exist in source, it can only be
1694             # a generated file in the build tree.
1695             if (! -f $ddest) {
1696                 $ddest = cleanfile($buildd, $_, $blddir);
1697                 if ($unified_info{rename}->{$ddest}) {
1698                     $ddest = $unified_info{rename}->{$ddest};
1699                 }
1700             }
1701             foreach (@{$depends{$dest}}) {
1702                 my $d = cleanfile($sourced, $_, $blddir);
1703
1704                 # If we know it's generated, or assume it is because we can't
1705                 # find it in the source tree, we set file we depend on to be
1706                 # in the build tree rather than the source tree, and assume
1707                 # and that there are lines to build it in a BEGINRAW..ENDRAW
1708                 # section or in the Makefile template.
1709                 if (! -f $d
1710                     || (grep { $d eq $_ }
1711                         map { cleanfile($srcdir, $_, $blddir) }
1712                         (@generated_headers, @generated_by_make_headers))) {
1713                     $d = cleanfile($buildd, $_, $blddir);
1714                 }
1715                 # Take note if the file to depend on is being renamed
1716                 if ($unified_info{rename}->{$d}) {
1717                     $d = $unified_info{rename}->{$d};
1718                 }
1719                 $unified_info{depends}->{$ddest}->{$d} = 1;
1720                 # If we depend on a header file or a perl module, let's make
1721                 # sure it can get included
1722                 if ($d =~ /\.(h|pm)$/) {
1723                     my $i = dirname($d);
1724                     push @{$unified_info{includes}->{$ddest}}, $i
1725                         unless grep { $_ eq $i } @{$unified_info{includes}->{$ddest}};
1726                 }
1727             }
1728         }
1729
1730         foreach (keys %includes) {
1731             my $dest = $_;
1732             my $ddest = cleanfile($sourced, $_, $blddir);
1733
1734             # If the destination doesn't exist in source, it can only be
1735             # a generated file in the build tree.
1736             if (! -f $ddest) {
1737                 $ddest = cleanfile($buildd, $_, $blddir);
1738                 if ($unified_info{rename}->{$ddest}) {
1739                     $ddest = $unified_info{rename}->{$ddest};
1740                 }
1741             }
1742             foreach (@{$includes{$dest}}) {
1743                 my $i = cleandir($sourced, $_, $blddir);
1744                 push @{$unified_info{includes}->{$ddest}}, $i
1745                     unless grep { $_ eq $i } @{$unified_info{includes}->{$ddest}};
1746             }
1747         }
1748     }
1749
1750     ### Make unified_info a bit more efficient
1751     # One level structures
1752     foreach (("programs", "libraries", "engines", "scripts", "extra", "overrides")) {
1753         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
1754     }
1755     # Two level structures
1756     foreach my $l1 (("sources", "shared_sources", "ldadd", "depends")) {
1757         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
1758             $unified_info{$l1}->{$l2} =
1759                 [ sort keys %{$unified_info{$l1}->{$l2}} ];
1760         }
1761     }
1762 }
1763
1764 # For the schemes that need it, we provide the old *_obj configs
1765 # from the *_asm_obj ones
1766 foreach (grep /_(asm|aux)_src$/, keys %target) {
1767     my $src = $_;
1768     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
1769     ($target{$obj} = $target{$src}) =~ s/\.[csS]\b/.o/g;
1770 }
1771
1772 # Write down our configuration where it fits #########################
1773
1774 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
1775 print OUT <<"EOF";
1776 package configdata;
1777
1778 use strict;
1779 use warnings;
1780
1781 use Exporter;
1782 #use vars qw(\@ISA \@EXPORT);
1783 our \@ISA = qw(Exporter);
1784 our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables);
1785
1786 EOF
1787 print OUT "our %config = (\n";
1788 foreach (sort keys %config) {
1789     if (ref($config{$_}) eq "ARRAY") {
1790         print OUT "  ", $_, " => [ ", join(", ",
1791                                            map { quotify("perl", $_) }
1792                                            @{$config{$_}}), " ],\n";
1793     } else {
1794         print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
1795     }
1796 }
1797 print OUT <<"EOF";
1798 );
1799
1800 EOF
1801 print OUT "our %target = (\n";
1802 foreach (sort keys %target) {
1803     if (ref($target{$_}) eq "ARRAY") {
1804         print OUT "  ", $_, " => [ ", join(", ",
1805                                            map { quotify("perl", $_) }
1806                                            @{$target{$_}}), " ],\n";
1807     } else {
1808         print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
1809     }
1810 }
1811 print OUT <<"EOF";
1812 );
1813
1814 EOF
1815 print OUT "our \%available_protocols = (\n";
1816 print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
1817 print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
1818 print OUT <<"EOF";
1819 );
1820
1821 EOF
1822 print OUT "our \@disablables = (\n";
1823 foreach (@disablables) {
1824     print OUT "  ", quotify("perl", $_), ",\n";
1825 }
1826 print OUT <<"EOF";
1827 );
1828
1829 EOF
1830 print OUT "our \%disabled = (\n";
1831 foreach (sort keys %disabled) {
1832     print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
1833 }
1834 print OUT <<"EOF";
1835 );
1836
1837 EOF
1838 print OUT "our %withargs = (\n";
1839 foreach (sort keys %withargs) {
1840     if (ref($withargs{$_}) eq "ARRAY") {
1841         print OUT "  ", $_, " => [ ", join(", ",
1842                                            map { quotify("perl", $_) }
1843                                            @{$withargs{$_}}), " ],\n";
1844     } else {
1845         print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
1846     }
1847 }
1848 print OUT <<"EOF";
1849 );
1850
1851 EOF
1852 if ($builder eq "unified") {
1853     my $recurse;
1854     $recurse = sub {
1855         my $indent = shift;
1856         foreach (@_) {
1857             if (ref $_ eq "ARRAY") {
1858                 print OUT " "x$indent, "[\n";
1859                 foreach (@$_) {
1860                     $recurse->($indent + 4, $_);
1861                 }
1862                 print OUT " "x$indent, "],\n";
1863             } elsif (ref $_ eq "HASH") {
1864                 my %h = %$_;
1865                 print OUT " "x$indent, "{\n";
1866                 foreach (sort keys %h) {
1867                     if (ref $h{$_} eq "") {
1868                         print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
1869                     } else {
1870                         print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
1871                         $recurse->($indent + 8, $h{$_});
1872                     }
1873                 }
1874                 print OUT " "x$indent, "},\n";
1875             } else {
1876                 print OUT " "x$indent, quotify("perl", $_), ",\n";
1877             }
1878         }
1879     };
1880     print OUT "our %unified_info = (\n";
1881     foreach (sort keys %unified_info) {
1882         if (ref $unified_info{$_} eq "") {
1883             print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
1884         } else {
1885             print OUT " "x4, quotify("perl", $_), " =>\n";
1886             $recurse->(8, $unified_info{$_});
1887         }
1888     }
1889     print OUT <<"EOF";
1890 );
1891
1892 EOF
1893 }
1894 print OUT "1;\n";
1895 close(OUT);
1896
1897
1898 print "CC            =$config{cross_compile_prefix}$target{cc}\n";
1899 print "CFLAG         =$target{cflags} $config{cflags}\n";
1900 print "SHARED_CFLAG  =$target{shared_cflag}\n";
1901 print "DEFINES       =",join(" ", @{$target{defines}}, @{$config{defines}}),"\n";
1902 print "LFLAG         =$target{lflags}\n";
1903 print "PLIB_LFLAG    =$target{plib_lflags}\n";
1904 print "EX_LIBS       =$target{ex_libs} $config{ex_libs}\n";
1905 print "APPS_OBJ      =$target{apps_obj}\n";
1906 print "CPUID_OBJ     =$target{cpuid_obj}\n";
1907 print "UPLINK_OBJ    =$target{uplink_obj}\n";
1908 print "BN_ASM        =$target{bn_obj}\n";
1909 print "EC_ASM        =$target{ec_obj}\n";
1910 print "DES_ENC       =$target{des_obj}\n";
1911 print "AES_ENC       =$target{aes_obj}\n";
1912 print "BF_ENC        =$target{bf_obj}\n";
1913 print "CAST_ENC      =$target{cast_obj}\n";
1914 print "RC4_ENC       =$target{rc4_obj}\n";
1915 print "RC5_ENC       =$target{rc5_obj}\n";
1916 print "MD5_OBJ_ASM   =$target{md5_obj}\n";
1917 print "SHA1_OBJ_ASM  =$target{sha1_obj}\n";
1918 print "RMD160_OBJ_ASM=$target{rmd160_obj}\n";
1919 print "CMLL_ENC      =$target{cmll_obj}\n";
1920 print "MODES_OBJ     =$target{modes_obj}\n";
1921 print "PADLOCK_OBJ   =$target{padlock_obj}\n";
1922 print "CHACHA_ENC    =$target{chacha_obj}\n";
1923 print "POLY1305_OBJ  =$target{poly1305_obj}\n";
1924 print "BLAKE2_OBJ    =$target{blake2_obj}\n";
1925 print "PROCESSOR     =$config{processor}\n";
1926 print "RANLIB        =", $target{ranlib} eq '$(CROSS_COMPILE)ranlib' ?
1927                              "$config{cross_compile_prefix}ranlib" :
1928                              "$target{ranlib}", "\n";
1929 print "ARFLAGS       =$target{arflags}\n";
1930 print "PERL          =$config{perl}\n";
1931 print "\n";
1932 print "SIXTY_FOUR_BIT_LONG mode\n" if $config{b64l};
1933 print "SIXTY_FOUR_BIT mode\n" if $config{b64};
1934 print "THIRTY_TWO_BIT mode\n" if $config{b32};
1935 print "BN_LLONG mode\n" if $config{bn_ll};
1936 print "RC4 uses $config{rc4_int}\n" if $config{rc4_int} ne $def_int;
1937
1938 for (@generated_headers) {
1939     mkpath(catdir($blddir, dirname($_)));
1940     run_dofile(catfile($blddir, $_),
1941                catfile($srcdir, $_.".in"));
1942 }
1943
1944 my %builders = (
1945     unified => sub {
1946         run_dofile(catfile($blddir, $target{build_file}),
1947                    $config{build_file_template},
1948                    catfile($srcdir, "Configurations", "common.tmpl"));
1949     },
1950     );
1951
1952 $builders{$builder}->($builder_platform, @builder_opts);
1953
1954 print <<"EOF";
1955
1956 Configured for $target.
1957 EOF
1958
1959 print <<"EOF" if ($disabled{threads} eq "unavailable");
1960
1961 The library could not be configured for supporting multi-threaded
1962 applications as the compiler options required on this system are not known.
1963 See file INSTALL for details if you need multi-threading.
1964 EOF
1965
1966 print <<"EOF" if ($no_shared_warn);
1967
1968 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
1969 platform, so we will pretend you gave the option 'no-pic', which also disables
1970 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
1971 or position independent code, please let us know (but please first make sure
1972 you have tried with a current version of OpenSSL).
1973 EOF
1974
1975 print <<"EOF" if (-f catfile($srcdir, "configdata.pm") && $srcdir ne $blddir);
1976
1977 WARNING: there are indications that another build was made in the source
1978 directory.  This build may have picked up artifacts from that build, the
1979 safest course of action is to clean the source directory and redo this
1980 configuration.
1981 EOF
1982
1983 exit(0);
1984
1985 ######################################################################
1986 #
1987 # Helpers and utility functions
1988 #
1989
1990 # Configuration file reading #########################################
1991
1992 # Note: All of the helper functions are for lazy evaluation.  They all
1993 # return a CODE ref, which will return the intended value when evaluated.
1994 # Thus, whenever there's mention of a returned value, it's about that
1995 # intended value.
1996
1997 # Helper function to implement conditional inheritance depending on the
1998 # value of $disabled{asm}.  Used in inherit_from values as follows:
1999 #
2000 #      inherit_from => [ "template", asm("asm_tmpl") ]
2001 #
2002 sub asm {
2003     my @x = @_;
2004     sub {
2005         $disabled{asm} ? () : @x;
2006     }
2007 }
2008
2009 # Helper function to implement conditional value variants, with a default
2010 # plus additional values based on the value of $config{build_type}.
2011 # Arguments are given in hash table form:
2012 #
2013 #       picker(default => "Basic string: ",
2014 #              debug   => "debug",
2015 #              release => "release")
2016 #
2017 # When configuring with --debug, the resulting string will be
2018 # "Basic string: debug", and when not, it will be "Basic string: release"
2019 #
2020 # This can be used to create variants of sets of flags according to the
2021 # build type:
2022 #
2023 #       cflags => picker(default => "-Wall",
2024 #                        debug   => "-g -O0",
2025 #                        release => "-O3")
2026 #
2027 sub picker {
2028     my %opts = @_;
2029     return sub { add($opts{default} || (),
2030                      $opts{$config{build_type}} || ())->(); }
2031 }
2032
2033 # Helper function to combine several values of different types into one.
2034 # This is useful if you want to combine a string with the result of a
2035 # lazy function, such as:
2036 #
2037 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
2038 #
2039 sub combine {
2040     my @stuff = @_;
2041     return sub { add(@stuff)->(); }
2042 }
2043
2044 # Helper function to implement conditional values depending on the value
2045 # of $disabled{threads}.  Can be used as follows:
2046 #
2047 #       cflags => combine("-Wall", threads("-pthread"))
2048 #
2049 sub threads {
2050     my @flags = @_;
2051     return sub { add($disabled{threads} ? () : @flags)->(); }
2052 }
2053
2054
2055
2056 our $add_called = 0;
2057 # Helper function to implement adding values to already existing configuration
2058 # values.  It handles elements that are ARRAYs, CODEs and scalars
2059 sub _add {
2060     my $separator = shift;
2061
2062     # If there's any ARRAY in the collection of values OR the separator
2063     # is undef, we will return an ARRAY of combined values, otherwise a
2064     # string of joined values with $separator as the separator.
2065     my $found_array = !defined($separator);
2066
2067     my @values =
2068         map {
2069             my $res = $_;
2070             while (ref($res) eq "CODE") {
2071                 $res = $res->();
2072             }
2073             if (defined($res)) {
2074                 if (ref($res) eq "ARRAY") {
2075                     $found_array = 1;
2076                     @$res;
2077                 } else {
2078                     $res;
2079                 }
2080             } else {
2081                 ();
2082             }
2083     } (@_);
2084
2085     $add_called = 1;
2086
2087     if ($found_array) {
2088         [ @values ];
2089     } else {
2090         join($separator, grep { defined($_) && $_ ne "" } @values);
2091     }
2092 }
2093 sub add_before {
2094     my $separator = " ";
2095     if (ref($_[$#_]) eq "HASH") {
2096         my $opts = pop;
2097         $separator = $opts->{separator};
2098     }
2099     my @x = @_;
2100     sub { _add($separator, @x, @_) };
2101 }
2102 sub add {
2103     my $separator = " ";
2104     if (ref($_[$#_]) eq "HASH") {
2105         my $opts = pop;
2106         $separator = $opts->{separator};
2107     }
2108     my @x = @_;
2109     sub { _add($separator, @_, @x) };
2110 }
2111
2112 # configuration reader, evaluates the input file as a perl script and expects
2113 # it to fill %targets with target configurations.  Those are then added to
2114 # %table.
2115 sub read_config {
2116     my $fname = shift;
2117     open(CONFFILE, "< $fname")
2118         or die "Can't open configuration file '$fname'!\n";
2119     my $x = $/;
2120     undef $/;
2121     my $content = <CONFFILE>;
2122     $/ = $x;
2123     close(CONFFILE);
2124     my %targets = ();
2125     {
2126         local %table = %::table;    # Protect %table from tampering
2127
2128         eval $content;
2129         warn $@ if $@;
2130     }
2131
2132     # For each target, check that it's configured with a hash table.
2133     foreach (keys %targets) {
2134         if (ref($targets{$_}) ne "HASH") {
2135             if (ref($targets{$_}) eq "") {
2136                 warn "Deprecated target configuration for $_, ignoring...\n";
2137             } else {
2138                 warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
2139             }
2140             delete $targets{$_};
2141         }
2142     }
2143
2144     %table = (%table, %targets);
2145
2146 }
2147
2148 # configuration resolver.  Will only resolve all the lazy evaluation
2149 # codeblocks for the chosen target and all those it inherits from,
2150 # recursively
2151 sub resolve_config {
2152     my $target = shift;
2153     my @breadcrumbs = @_;
2154
2155 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
2156
2157     if (grep { $_ eq $target } @breadcrumbs) {
2158         die "inherit_from loop!  target backtrace:\n  "
2159             ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
2160     }
2161
2162     if (!defined($table{$target})) {
2163         warn "Warning! target $target doesn't exist!\n";
2164         return ();
2165     }
2166     # Recurse through all inheritances.  They will be resolved on the
2167     # fly, so when this operation is done, they will all just be a
2168     # bunch of attributes with string values.
2169     # What we get here, though, are keys with references to lists of
2170     # the combined values of them all.  We will deal with lists after
2171     # this stage is done.
2172     my %combined_inheritance = ();
2173     if ($table{$target}->{inherit_from}) {
2174         my @inherit_from =
2175             map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
2176         foreach (@inherit_from) {
2177             my %inherited_config = resolve_config($_, $target, @breadcrumbs);
2178
2179             # 'template' is a marker that's considered private to
2180             # the config that had it.
2181             delete $inherited_config{template};
2182
2183             foreach (keys %inherited_config) {
2184                 if (!$combined_inheritance{$_}) {
2185                     $combined_inheritance{$_} = [];
2186                 }
2187                 push @{$combined_inheritance{$_}}, $inherited_config{$_};
2188             }
2189         }
2190     }
2191
2192     # We won't need inherit_from in this target any more, since we've
2193     # resolved all the inheritances that lead to this
2194     delete $table{$target}->{inherit_from};
2195
2196     # Now is the time to deal with those lists.  Here's the place to
2197     # decide what shall be done with those lists, all based on the
2198     # values of the target we're currently dealing with.
2199     # - If a value is a coderef, it will be executed with the list of
2200     #   inherited values as arguments.
2201     # - If the corresponding key doesn't have a value at all or is the
2202     #   empty string, the inherited value list will be run through the
2203     #   default combiner (below), and the result becomes this target's
2204     #   value.
2205     # - Otherwise, this target's value is assumed to be a string that
2206     #   will simply override the inherited list of values.
2207     my $default_combiner = add();
2208
2209     my %all_keys =
2210         map { $_ => 1 } (keys %combined_inheritance,
2211                          keys %{$table{$target}});
2212
2213     sub process_values {
2214         my $object    = shift;
2215         my $inherited = shift;  # Always a [ list ]
2216         my $target    = shift;
2217         my $entry     = shift;
2218
2219         $add_called = 0;
2220
2221         while(ref($object) eq "CODE") {
2222             $object = $object->(@$inherited);
2223         }
2224         if (!defined($object)) {
2225             return ();
2226         }
2227         elsif (ref($object) eq "ARRAY") {
2228             local $add_called;  # To make sure recursive calls don't affect it
2229             return [ map { process_values($_, $inherited, $target, $entry) }
2230                      @$object ];
2231         } elsif (ref($object) eq "") {
2232             return $object;
2233         } else {
2234             die "cannot handle reference type ",ref($object)
2235                 ," found in target ",$target," -> ",$entry,"\n";
2236         }
2237     }
2238
2239     foreach (sort keys %all_keys) {
2240         my $previous = $combined_inheritance{$_};
2241
2242         # Current target doesn't have a value for the current key?
2243         # Assign it the default combiner, the rest of this loop body
2244         # will handle it just like any other coderef.
2245         if (!exists $table{$target}->{$_}) {
2246             $table{$target}->{$_} = $default_combiner;
2247         }
2248
2249         $table{$target}->{$_} = process_values($table{$target}->{$_},
2250                                                $combined_inheritance{$_},
2251                                                $target, $_);
2252         unless(defined($table{$target}->{$_})) {
2253             delete $table{$target}->{$_};
2254         }
2255 #        if ($extra_checks &&
2256 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
2257 #            warn "$_ got replaced in $target\n";
2258 #        }
2259     }
2260
2261     # Finally done, return the result.
2262     return %{$table{$target}};
2263 }
2264
2265 sub usage
2266         {
2267         print STDERR $usage;
2268         print STDERR "\npick os/compiler from:\n";
2269         my $j=0;
2270         my $i;
2271         my $k=0;
2272         foreach $i (sort keys %table)
2273                 {
2274                 next if $table{$i}->{template};
2275                 next if $i =~ /^debug/;
2276                 $k += length($i) + 1;
2277                 if ($k > 78)
2278                         {
2279                         print STDERR "\n";
2280                         $k=length($i);
2281                         }
2282                 print STDERR $i . " ";
2283                 }
2284         foreach $i (sort keys %table)
2285                 {
2286                 next if $table{$i}->{template};
2287                 next if $i !~ /^debug/;
2288                 $k += length($i) + 1;
2289                 if ($k > 78)
2290                         {
2291                         print STDERR "\n";
2292                         $k=length($i);
2293                         }
2294                 print STDERR $i . " ";
2295                 }
2296         print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
2297         exit(1);
2298         }
2299
2300 sub run_dofile
2301 {
2302     my $out = shift;
2303     my @templates = @_;
2304
2305     unlink $out || warn "Can't remove $out, $!"
2306         if -f $out;
2307     foreach (@templates) {
2308         die "Can't open $_, $!" unless -f $_;
2309     }
2310     my $cmd = "$config{perl} \"-I.\" \"-Mconfigdata\" \"$dofile\" -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
2311     #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
2312     system($cmd);
2313     exit 1 if $? != 0;
2314     rename("$out.new", $out) || die "Can't rename $out.new, $!";
2315 }
2316
2317 sub which
2318 {
2319     my ($name)=@_;
2320
2321     if (eval { require IPC::Cmd; 1; }) {
2322         IPC::Cmd->import();
2323         return scalar IPC::Cmd::can_run($name);
2324     } else {
2325         # if there is $directories component in splitpath,
2326         # then it's not something to test with $PATH...
2327         return $name if (File::Spec->splitpath($name))[1];
2328
2329         foreach (File::Spec->path()) {
2330             my $fullpath = catfile($_, "$name$target{exe_extension}");
2331             if (-f $fullpath and -x $fullpath) {
2332                 return $fullpath;
2333             }
2334         }
2335     }
2336 }
2337
2338 # Configuration printer ##############################################
2339
2340 sub print_table_entry
2341 {
2342     my $target = shift;
2343     my %target = resolve_config($target);
2344     my $type = shift;
2345
2346     # Don't print the templates
2347     return if $target{template};
2348
2349     my @sequence = (
2350         "sys_id",
2351         "cc",
2352         "cflags",
2353         "defines",
2354         "unistd",
2355         "ld",
2356         "lflags",
2357         "plib_lflags",
2358         "ex_libs",
2359         "bn_ops",
2360         "cpuid_obj",
2361         "bn_obj",
2362         "ec_obj",
2363         "des_obj",
2364         "aes_obj",
2365         "bf_obj",
2366         "md5_obj",
2367         "sha1_obj",
2368         "cast_obj",
2369         "rc4_obj",
2370         "rmd160_obj",
2371         "rc5_obj",
2372         "wp_obj",
2373         "cmll_obj",
2374         "modes_obj",
2375         "padlock_obj",
2376         "thread_scheme",
2377         "perlasm_scheme",
2378         "dso_scheme",
2379         "shared_target",
2380         "shared_cflag",
2381         "shared_ldflag",
2382         "shared_rcflag",
2383         "shared_extension",
2384         "shared_extension_simple",
2385         "shared_import_extension",
2386         "dso_extension",
2387         "obj_extension",
2388         "exe_extension",
2389         "ranlib",
2390         "ar",
2391         "arflags",
2392         "multilib",
2393         "build_scheme",
2394         );
2395
2396     if ($type eq "TABLE") {
2397         print "\n";
2398         print "*** $target\n";
2399         foreach (@sequence) {
2400             if (ref($target{$_}) eq "ARRAY") {
2401                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
2402             } else {
2403                 printf "\$%-12s = %s\n", $_, $target{$_};
2404             }
2405         }
2406     } elsif ($type eq "HASH") {
2407         my $largest =
2408             length((sort { length($a) <=> length($b) } @sequence)[-1]);
2409         print "    '$target' => {\n";
2410         foreach (@sequence) {
2411             if ($target{$_}) {
2412                 if (ref($target{$_}) eq "ARRAY") {
2413                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
2414                 } else {
2415                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
2416                 }
2417             }
2418         }
2419         print "    },\n";
2420     }
2421 }
2422
2423 # Utility routines ###################################################
2424
2425 # On VMS, if the given file is a logical name, File::Spec::Functions
2426 # will consider it an absolute path.  There are cases when we want a
2427 # purely syntactic check without checking the environment.
2428 sub isabsolute {
2429     my $file = shift;
2430
2431     # On non-platforms, we just use file_name_is_absolute().
2432     return file_name_is_absolute($file) unless $^O eq "VMS";
2433
2434     # If the file spec includes a device or a directpry spec,
2435     # file_name_is_absolute() is perfectly safe.
2436     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
2437
2438     # Here, we know the given file spec isn't absolute
2439     return 0;
2440 }
2441
2442 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
2443 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
2444 # realpath() requires that at least all path components except the last is an
2445 # existing directory.  On VMS, the last component of the directory spec must
2446 # exist.
2447 sub absolutedir {
2448     my $dir = shift;
2449
2450     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
2451     # will return the volume name for the device, no matter what.  Also,
2452     # it will return an incorrect directory spec if the argument is a
2453     # directory that doesn't exist.
2454     if ($^O eq "VMS") {
2455         return rel2abs($dir);
2456     }
2457
2458     # We use realpath() on Unix, since no other will properly clean out
2459     # a directory spec.
2460     use Cwd qw/realpath/;
2461
2462     return realpath($dir);
2463 }
2464
2465 sub quotify {
2466     my %processors = (
2467         perl    => sub { my $x = shift;
2468                          $x =~ s/([\\\$\@"])/\\$1/g;
2469                          return '"'.$x.'"'; },
2470         );
2471     my $for = shift;
2472     my $processor =
2473         defined($processors{$for}) ? $processors{$for} : sub { shift; };
2474
2475     return map { $processor->($_); } @_;
2476 }
2477
2478 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
2479 # $filename is a file name to read from
2480 # $line_concat_cond_re is a regexp detecting a line continuation ending
2481 # $line_concat is a CODEref that takes care of concatenating two lines
2482 sub collect_from_file {
2483     my $filename = shift;
2484     my $line_concat_cond_re = shift;
2485     my $line_concat = shift;
2486
2487     open my $fh, $filename || die "unable to read $filename: $!\n";
2488     return sub {
2489         my $saved_line = "";
2490         $_ = "";
2491         while (<$fh>) {
2492             s|\R$||;
2493             if (defined $line_concat) {
2494                 $_ = $line_concat->($saved_line, $_);
2495                 $saved_line = "";
2496             }
2497             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
2498                 $saved_line = $_;
2499                 next;
2500             }
2501             return $_;
2502         }
2503         die "$filename ending with continuation line\n" if $_;
2504         close $fh;
2505         return undef;
2506     }
2507 }
2508
2509 # collect_from_array($array, $line_concat_cond_re, $line_concat)
2510 # $array is an ARRAYref of lines
2511 # $line_concat_cond_re is a regexp detecting a line continuation ending
2512 # $line_concat is a CODEref that takes care of concatenating two lines
2513 sub collect_from_array {
2514     my $array = shift;
2515     my $line_concat_cond_re = shift;
2516     my $line_concat = shift;
2517     my @array = (@$array);
2518
2519     return sub {
2520         my $saved_line = "";
2521         $_ = "";
2522         while (defined($_ = shift @array)) {
2523             s|\R$||;
2524             if (defined $line_concat) {
2525                 $_ = $line_concat->($saved_line, $_);
2526                 $saved_line = "";
2527             }
2528             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
2529                 $saved_line = $_;
2530                 next;
2531             }
2532             return $_;
2533         }
2534         die "input text ending with continuation line\n" if $_;
2535         return undef;
2536     }
2537 }
2538
2539 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
2540 # $lineiterator is a CODEref that delivers one line at a time.
2541 # All following arguments are regex/CODEref pairs, where the regexp detects a
2542 # line and the CODEref does something with the result of the regexp.
2543 sub collect_information {
2544     my $lineiterator = shift;
2545     my %collectors = @_;
2546
2547     while(defined($_ = $lineiterator->())) {
2548         s|\R$||;
2549         my $found = 0;
2550         if ($collectors{"BEFORE"}) {
2551             $collectors{"BEFORE"}->($_);
2552         }
2553         foreach my $re (keys %collectors) {
2554             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
2555                 $collectors{$re}->($lineiterator);
2556                 $found = 1;
2557             };
2558         }
2559         if ($collectors{"OTHERWISE"}) {
2560             $collectors{"OTHERWISE"}->($lineiterator, $_)
2561                 unless $found || !defined $collectors{"OTHERWISE"};
2562         }
2563         if ($collectors{"AFTER"}) {
2564             $collectors{"AFTER"}->($_);
2565         }
2566     }
2567 }
2568
2569 # tokenize($line)
2570 # $line is a line of text to split up into tokens
2571 # returns a list of tokens
2572 #
2573 # Tokens are divided by spaces.  If the tokens include spaces, they
2574 # have to be quoted with single or double quotes.  Double quotes
2575 # inside a double quoted token must be escaped.  Escaping is done
2576 # with backslash.
2577 # Basically, the same quoting rules apply for " and ' as in any
2578 # Unix shell.
2579 sub tokenize {
2580     my $line = my $debug_line = shift;
2581     my @result = ();
2582
2583     while ($line =~ s|^\s+||, $line ne "") {
2584         my $token = "";
2585         while ($line ne "" && $line !~ m|^\s|) {
2586             if ($line =~ m/^"((?:[^"\\]+|\\.)*)"/) {
2587                 $token .= $1;
2588                 $line = $';
2589             } elsif ($line =~ m/^'([^']*)'/) {
2590                 $token .= $1;
2591                 $line = $';
2592             } elsif ($line =~ m/^(\S+)/) {
2593                 $token .= $1;
2594                 $line = $';
2595             }
2596         }
2597         push @result, $token;
2598     }
2599
2600     if ($ENV{CONFIGURE_DEBUG_TOKENIZE}) {
2601         print STDERR "DEBUG[tokenize]: Parsed '$debug_line' into:\n";
2602         print STDERR "DEBUG[tokenize]: ('", join("', '", @result), "')\n";
2603     }
2604     return @result;
2605 }