Configure

   1 #! /usr/bin/env perl
   2 # -*- mode: perl; -*-
   3
   4 ##  Configure -- OpenSSL source tree configuration script
   5
   6 require 5.10.0;
   7 use strict;
   8 use File::Basename;
   9 use File::Spec::Functions qw/:DEFAULT abs2rel rel2abs/;
  10 use File::Path qw/mkpath/;
  11
  12 # see INSTALL for instructions.
  13
  14 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";
  15
  16 # Options:
  17 #
  18 # --config      add the given configuration file, which will be read after
  19 #               any "Configurations*" files that are found in the same
  20 #               directory as this script.
  21 # --prefix      prefix for the OpenSSL installation, which includes the
  22 #               directories bin, lib, include, share/man, share/doc/openssl
  23 #               This becomes the value of INSTALLTOP in Makefile
  24 #               (Default: /usr/local)
  25 # --openssldir  OpenSSL data area, such as openssl.cnf, certificates and keys.
  26 #               If it's a relative directory, it will be added on the directory
  27 #               given with --prefix.
  28 #               This becomes the value of OPENSSLDIR in Makefile and in C.
  29 #               (Default: PREFIX/ssl)
  30 #
  31 # --cross-compile-prefix Add specified prefix to binutils components.
  32 #
  33 # --api         One of 0.9.8, 1.0.0 or 1.1.0.  Do not compile support for
  34 #               interfaces deprecated as of the specified OpenSSL version.
  35 #
  36 # no-hw-xxx     do not compile support for specific crypto hardware.
  37 #               Generic OpenSSL-style methods relating to this support
  38 #               are always compiled but return NULL if the hardware
  39 #               support isn't compiled.
  40 # no-hw         do not compile support for any crypto hardware.
  41 # [no-]threads  [don't] try to create a library that is suitable for
  42 #               multithreaded applications (default is "threads" if we
  43 #               know how to do it)
  44 # [no-]shared   [don't] try to create shared libraries when supported.
  45 # [no-]pic      [don't] try to build position independent code when supported.
  46 #               If disabled, it also disables shared and dynamic-engine.
  47 # no-asm        do not use assembler
  48 # no-dso        do not compile in any native shared-library methods. This
  49 #               will ensure that all methods just return NULL.
  50 # no-egd        do not compile support for the entropy-gathering daemon APIs
  51 # [no-]zlib     [don't] compile support for zlib compression.
  52 # zlib-dynamic  Like "zlib", but the zlib library is expected to be a shared
  53 #               library and will be loaded in run-time by the OpenSSL library.
  54 # sctp          include SCTP support
  55 # 386           generate 80386 code
  56 # enable-weak-ssl-ciphers
  57 #               Enable weak ciphers that are disabled by default. This currently
  58 #               only includes RC4 based ciphers.
  59 # no-sse2       disables IA-32 SSE2 code, above option implies no-sse2
  60 # no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
  61 # -<xxx> +<xxx> compiler options are passed through
  62 #
  63 # DEBUG_SAFESTACK use type-safe stacks to enforce type-safety on stack items
  64 #               provided to stack calls. Generates unique stack functions for
  65 #               each possible stack type.
  66 # BN_LLONG      use the type 'long long' in crypto/bn/bn.h
  67 # RC4_CHAR      use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
  68 # Following are set automatically by this script
  69 #
  70 # MD5_ASM       use some extra md5 assember,
  71 # SHA1_ASM      use some extra sha1 assember, must define L_ENDIAN for x86
  72 # RMD160_ASM    use some extra ripemd160 assember,
  73 # SHA256_ASM    sha256_block is implemented in assembler
  74 # SHA512_ASM    sha512_block is implemented in assembler
  75 # AES_ASM       ASE_[en|de]crypt is implemented in assembler
  76
  77 # Minimum warning options... any contributions to OpenSSL should at least get
  78 # past these.
  79
  80 my $gcc_devteam_warn = "-DPEDANTIC -DREF_DEBUG -DDEBUG_UNUSED -DBIO_DEBUG"
  81         . " -pedantic"
  82         . " -Wall"
  83         . " -Wno-long-long"
  84         . " -Wsign-compare"
  85         . " -Wmissing-prototypes"
  86         . " -Wshadow"
  87         . " -Wformat"
  88         . " -Wtype-limits"
  89         . " -Werror"
  90         ;
  91
  92 # These are used in addition to $gcc_devteam_warn when the compiler is clang.
  93 # TODO(openssl-team): fix problems and investigate if (at least) the
  94 # following warnings can also be enabled:
  95 #       -Wswitch-enum
  96 #       -Wcast-align
  97 #       -Wunreachable-code
  98 #       -Wlanguage-extension-token -- no, we use asm()
  99 #       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
 100 #       -Wextended-offsetof -- no, needed in CMS ASN1 code
 101 my $clang_devteam_warn = ""
 102         . " -Qunused-arguments"
 103         . " -Wextra"
 104         . " -Wno-unused-parameter"
 105         . " -Wno-missing-field-initializers"
 106         . " -Wno-language-extension-token"
 107         . " -Wno-extended-offsetof"
 108         . " -Wconditional-uninitialized"
 109         . " -Wincompatible-pointer-types-discards-qualifiers"
 110         . " -Wmissing-variable-declarations"
 111         ;
 112
 113 # This adds backtrace information to the memory leak info.  Is only used
 114 # when crypto-mdebug-backtrace is enabled.
 115 my $memleak_devteam_backtrace = "-rdynamic";
 116
 117 my $strict_warnings = 0;
 118
 119 # As for $BSDthreads. Idea is to maintain "collective" set of flags,
 120 # which would cover all BSD flavors. -pthread applies to them all,
 121 # but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
 122 # -lc_r, which is sufficient. FreeBSD 4.x expands it as -lc_r,
 123 # which has to be accompanied by explicit -D_THREAD_SAFE and
 124 # sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
 125 # seems to be sufficient?
 126 our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
 127
 128 #
 129 # API compability name to version number mapping.
 130 #
 131 my $maxapi = "1.1.0";           # API for "no-deprecated" builds
 132 my $apitable = {
 133     "1.1.0" => "0x10100000L",
 134     "1.0.0" => "0x10000000L",
 135     "0.9.8" => "0x00908000L",
 136 };
 137
 138 our %table = ();
 139 our %config = ();
 140 our %withargs = ();
 141
 142 # Forward declarations ###############################################
 143
 144 # read_config(filename)
 145 #
 146 # Reads a configuration file and populates %table with the contents
 147 # (which the configuration file places in %targets).
 148 sub read_config;
 149
 150 # resolve_config(target)
 151 #
 152 # Resolves all the late evalutations, inheritances and so on for the
 153 # chosen target and any target it inherits from.
 154 sub resolve_config;
 155
 156
 157 # Information collection #############################################
 158
 159 # Unified build supports separate build dir
 160 my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
 161 my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
 162 my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));
 163
 164 $config{sourcedir} = abs2rel($srcdir);
 165 $config{builddir} = abs2rel($blddir);
 166
 167 # Collect version numbers
 168 $config{version} = "unknown";
 169 $config{version_num} = "unknown";
 170 $config{shlib_version_number} = "unknown";
 171 $config{shlib_version_history} = "unknown";
 172
 173 collect_information(
 174     collect_from_file(catfile($srcdir,'include/openssl/opensslv.h')),
 175     qr/OPENSSL.VERSION.TEXT.*OpenSSL (\S+) / => sub { $config{version} = $1; },
 176     qr/OPENSSL.VERSION.NUMBER.*(0x\S+)/      => sub { $config{version_num}=$1 },
 177     qr/SHLIB_VERSION_NUMBER *"([^"]+)"/      => sub { $config{shlib_version_number}=$1 },
 178     qr/SHLIB_VERSION_HISTORY *"([^"]*)"/     => sub { $config{shlib_version_history}=$1 }
 179     );
 180 if ($config{shlib_version_history} ne "") { $config{shlib_version_history} .= ":"; }
 181
 182 ($config{major}, $config{minor})
 183     = ($config{version} =~ /^([0-9]+)\.([0-9\.]+)/);
 184 ($config{shlib_major}, $config{shlib_minor})
 185     = ($config{shlib_version_number} =~ /^([0-9]+)\.([0-9\.]+)/);
 186 die "erroneous version information in opensslv.h: ",
 187     "$config{major}, $config{minor}, $config{shlib_major}, $config{shlib_minor}\n"
 188     if ($config{major} eq "" || $config{minor} eq ""
 189         || $config{shlib_major} eq "" ||  $config{shlib_minor} eq "");
 190
 191 # Collect target configurations
 192
 193 my $pattern = catfile(dirname($0), "Configurations", "*.conf");
 194 foreach (sort glob($pattern) ) {
 195     &read_config($_);
 196 }
 197
 198
 199 print "Configuring OpenSSL version $config{version} (0x$config{version_num})\n";
 200
 201 $config{prefix}="";
 202 $config{openssldir}="";
 203 $config{processor}="";
 204 $config{libdir}="";
 205 $config{cross_compile_prefix}="";
 206 $config{fipslibdir}="/usr/local/ssl/fips-2.0/lib/";
 207 my $nofipscanistercheck=0;
 208 $config{baseaddr}="0xFB00000";
 209 my $auto_threads=1;    # enable threads automatically? true by default
 210 my $default_ranlib;
 211 $config{fips}=0;
 212
 213 # Top level directories to build
 214 $config{dirs} = [ "crypto", "ssl", "engines", "apps", "test", "tools" ];
 215 # crypto/ subdirectories to build
 216 $config{sdirs} = [
 217     "objects",
 218     "md2", "md4", "md5", "sha", "mdc2", "hmac", "ripemd", "whrlpool", "poly1305", "blake2",
 219     "des", "aes", "rc2", "rc4", "rc5", "idea", "bf", "cast", "camellia", "seed", "chacha", "modes",
 220     "bn", "ec", "rsa", "dsa", "dh", "dso", "engine",
 221     "buffer", "bio", "stack", "lhash", "rand", "err",
 222     "evp", "asn1", "pem", "x509", "x509v3", "conf", "txt_db", "pkcs7", "pkcs12", "comp", "ocsp", "ui",
 223     "cms", "ts", "srp", "cmac", "ct", "async", "kdf"
 224     ];
 225
 226 # Known TLS and DTLS protocols
 227 my @tls = qw(ssl3 tls1 tls1_1 tls1_2);
 228 my @dtls = qw(dtls1 dtls1_2);
 229
 230 # Explicitelly known options that are possible to disable.  They can
 231 # be regexps, and will be used like this: /^no-${option}$/
 232 # For developers: keep it sorted alphabetically
 233
 234 my @disablables = (
 235     "aes",
 236     "afalgeng",
 237     "asm",
 238     "async",
 239     "autoalginit",
 240     "autoerrinit",
 241     "bf",
 242     "blake2",
 243     "camellia",
 244     "capieng",
 245     "cast",
 246     "chacha",
 247     "cmac",
 248     "cms",
 249     "comp",
 250     "crypto-mdebug",
 251     "crypto-mdebug-backtrace",
 252     "ct",
 253     "deprecated",
 254     "des",
 255     "dgram",
 256     "dh",
 257     "dsa",
 258     "dso",
 259     "dtls",
 260     "dynamic-engine",
 261     "ec",
 262     "ec2m",
 263     "ecdh",
 264     "ecdsa",
 265     "ec_nistp_64_gcc_128",
 266     "egd",
 267     "engine",
 268     "err",
 269     "filenames",
 270     "heartbeats",
 271     "hmac",
 272     "hw(-.+)?",
 273     "idea",
 274     "makedepend",
 275     "md2",
 276     "md4",
 277     "md5",
 278     "mdc2",
 279     "md[-_]ghost94",
 280     "multiblock",
 281     "nextprotoneg",
 282     "ocb",
 283     "ocsp",
 284     "pic",
 285     "poly1305",
 286     "posix-io",
 287     "psk",
 288     "rc2",
 289     "rc4",
 290     "rc5",
 291     "rdrand",
 292     "rfc3779",
 293     "rijndael",                 # Old AES name
 294     "ripemd",
 295     "rmd160",
 296     "rsa",
 297     "scrypt",
 298     "sct",
 299     "sctp",
 300     "seed",
 301     "sha",
 302     "shared",
 303     "sock",
 304     "srp",
 305     "srtp",
 306     "sse2",
 307     "ssl",
 308     "ssl-trace",
 309     "static-engine",
 310     "stdio",
 311     "threads",
 312     "tls",
 313     "ts",
 314     "ui",
 315     "unit-test",
 316     "whirlpool",
 317     "weak-ssl-ciphers",
 318     "zlib",
 319     "zlib-dynamic",
 320     );
 321 foreach my $proto ((@tls, @dtls))
 322         {
 323         push(@disablables, $proto);
 324         push(@disablables, "$proto-method");
 325         }
 326
 327 my @deprecated_disablables = (
 328     "ssl2",
 329     );
 330
 331 # All of the following is disabled by default (RC5 was enabled before 0.9.8):
 332
 333 our %disabled = ( # "what"         => "comment"
 334                   "ec_nistp_64_gcc_128" => "default",
 335                   "egd"                 => "default",
 336                   "md2"                 => "default",
 337                   "rc5"                 => "default",
 338                   "sctp"                => "default",
 339                   "shared"              => "default",
 340                   "ssl-trace"           => "default",
 341                   "ssl3"                => "default",
 342                   "ssl3-method"         => "default",
 343                   "unit-test"           => "default",
 344                   "weak-ssl-ciphers"    => "default",
 345                   "zlib"                => "default",
 346                   "zlib-dynamic"        => "default",
 347                   "crypto-mdebug"       => "default",
 348                   "heartbeats"          => "default",
 349                 );
 350
 351 # Note: => pair form used for aesthetics, not to truly make a hash table
 352 my @disable_cascades = (
 353     # "what"            => [ "cascade", ... ]
 354     sub { $config{processor} eq "386" }
 355                         => [ "sse2" ],
 356     "ssl"               => [ "ssl3" ],
 357     "ssl3-method"       => [ "ssl3" ],
 358     "zlib"              => [ "zlib-dynamic" ],
 359     "rijndael"          => [ "aes" ],
 360     "des"               => [ "mdc2" ],
 361     "ec"                => [ "ecdsa", "ecdh" ],
 362
 363     "dgram"             => [ "dtls" ],
 364     "dtls"              => [ @dtls ],
 365
 366     # SSL 3.0, (D)TLS 1.0 and TLS 1.1 require MD5 and SHA
 367     "md5"               => [ "ssl", "tls1", "tls1_1", "dtls1" ],
 368     "sha"               => [ "ssl", "tls1", "tls1_1", "dtls1" ],
 369
 370     # Additionally, SSL 3.0 requires either RSA or DSA+DH
 371     sub { $disabled{rsa}
 372           && ($disabled{dsa} || $disabled{dh}); }
 373                         => [ "ssl" ],
 374
 375     # (D)TLS 1.0 and TLS 1.1 also require either RSA or DSA+DH
 376     # or ECDSA + ECDH.  (D)TLS 1.2 has this requirement as well.
 377     # (XXX: We don't support PSK-only builds).
 378     sub { $disabled{rsa}
 379           && ($disabled{dsa} || $disabled{dh})
 380           && ($disabled{ecdsa} || $disabled{ecdh}); }
 381                         => [ "tls1", "tls1_1", "tls1_2",
 382                              "dtls1", "dtls1_2" ],
 383
 384     "tls"               => [ @tls ],
 385
 386     # SRP and HEARTBEATS require TLSEXT
 387     "tlsext"            => [ "srp", "heartbeats" ],
 388
 389     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
 390
 391     # Without DSO, we can't load dynamic engines, so don't build them dynamic
 392     "dso"               => [ "dynamic-engine" ],
 393
 394     # Without position independent code, there can be no shared libraries or DSOs
 395     "pic"               => [ "shared" ],
 396     "shared"            => [ "dynamic-engine" ],
 397     "engine"            => [ "afalgeng" ],
 398     );
 399
 400 # Avoid protocol support holes.  Also disable all versions below N, if version
 401 # N is disabled while N+1 is enabled.
 402 #
 403 my @list = (reverse @tls);
 404 while ((my $first, my $second) = (shift @list, shift @list)) {
 405     last unless @list;
 406     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 407                               => [ @list ] );
 408     unshift @list, $second;
 409 }
 410 my @list = (reverse @dtls);
 411 while ((my $first, my $second) = (shift @list, shift @list)) {
 412     last unless @list;
 413     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 414                               => [ @list ] );
 415     unshift @list, $second;
 416 }
 417
 418 # Explicit "no-..." options will be collected in %disabled along with the defaults.
 419 # To remove something from %disabled, use "enable-foo".
 420 # For symmetry, "disable-foo" is a synonym for "no-foo".
 421
 422 my @generated_headers = (
 423     "include/openssl/opensslconf.h",
 424     "crypto/include/internal/bn_conf.h",
 425     "crypto/include/internal/dso_conf.h"
 426     );
 427
 428 my @generated_by_make_headers = (
 429     "crypto/buildinf.h"
 430     );
 431
 432
 433 my $no_sse2=0;
 434
 435 &usage if ($#ARGV < 0);
 436
 437 my $user_cflags="";
 438 my @user_defines=();
 439 $config{openssl_api_defines}=[];
 440 $config{openssl_algorithm_defines}=[];
 441 $config{openssl_thread_defines}=[];
 442 $config{openssl_sys_defines}=[];
 443 $config{openssl_other_defines}=[];
 444 my $libs="";
 445 my $target="";
 446 $config{options}="";
 447 $config{build_type} = "release";
 448
 449 my $classic = 0;
 450
 451 my @argvcopy=@ARGV;
 452
 453 if (grep /^reconf(igure)?$/, @argvcopy) {
 454     if (-f "./configdata.pm") {
 455         my $file = "./configdata.pm";
 456         unless (my $return = do $file) {
 457             die "couldn't parse $file: $@" if $@;
 458             die "couldn't do $file: $!"    unless defined $return;
 459             die "couldn't run $file"       unless $return;
 460         }
 461
 462         @argvcopy = defined($configdata::config{perlargv}) ?
 463             @{$configdata::config{perlargv}} : ();
 464         die "Incorrect data to reconfigure, please do a normal configuration\n"
 465             if (grep(/^reconf/,@argvcopy));
 466         $ENV{CROSS_COMPILE} = $configdata::config{cross_compile_prefix}
 467             if defined($configdata::config{cross_compile_prefix});
 468         $ENV{CROSS_COMPILE} = $configdata::config{cc}
 469             if defined($configdata::config{cc});
 470
 471         print "Reconfiguring with: ", join(" ",@argvcopy), "\n";
 472         print "    CROSS_COMPILE = ",$ENV{CROSS_COMPILE},"\n"
 473             if $ENV{CROSS_COMPILE};
 474         print "    CC = ",$ENV{CC},"\n" if $ENV{CC};
 475     } elsif (open IN, "<Makefile") {
 476         #
 477         # THIS SECTION IS TEMPORARY, it helps transitioning from Makefile
 478         # centered information gathering the reading configdata.pm
 479         #
 480         while (<IN>) {
 481             s|\R$||;
 482             if (/^CONFIGURE_ARGS=\s*(.*)\s*/) {
 483                 # Older form, we split the string and hope for the best
 484                 @argvcopy = split /\s+/, $_;
 485                 die "Incorrect data to reconfigure, please do a normal configuration\n"
 486                     if (grep(/^reconf/,@argvcopy));
 487             } elsif (/^CROSS_COMPILE=\s*(.*)/) {
 488                 $ENV{CROSS_COMPILE}=$1;
 489             } elsif (/^CC=\s*(?:\$\(CROSS_COMPILE\))?(.*?)$/) {
 490                 $ENV{CC}=$1;
 491             }
 492         }
 493         #
 494         # END OF TEMPORARY SECTION
 495         #
 496     } else {
 497         die "Insufficient data to reconfigure, please do a normal configuration\n";
 498     }
 499 }
 500
 501 $config{perlargv} = [ @argvcopy ];
 502
 503 my %unsupported_options = ();
 504 my %deprecated_options = ();
 505 foreach (@argvcopy)
 506         {
 507         # VMS is a case insensitive environment, and depending on settings
 508         # out of our control, we may receive options uppercased.  Let's
 509         # downcase at least the part before any equal sign.
 510         if ($^O eq "VMS")
 511                 {
 512                 s/^([^=]*)/lc($1)/e;
 513                 }
 514         s /^-no-/no-/; # some people just can't read the instructions
 515
 516         # rewrite some options in "enable-..." form
 517         s /^-?-?shared$/enable-shared/;
 518         s /^sctp$/enable-sctp/;
 519         s /^threads$/enable-threads/;
 520         s /^zlib$/enable-zlib/;
 521         s /^zlib-dynamic$/enable-zlib-dynamic/;
 522
 523         if (/^(no|disable|enable)-(.+)$/)
 524                 {
 525                 my $word = $2;
 526                 if (grep { $word =~ /^${_}$/ } @deprecated_disablables)
 527                         {
 528                         $deprecated_options{$_} = 1;
 529                         next;
 530                         }
 531                 elsif (!grep { $word =~ /^${_}$/ } @disablables)
 532                         {
 533                         $unsupported_options{$_} = 1;
 534                         next;
 535                         }
 536                 }
 537         if (/^no-(.+)$/ || /^disable-(.+)$/)
 538                 {
 539                 foreach my $proto ((@tls, @dtls))
 540                         {
 541                         if ($1 eq "$proto-method")
 542                                 {
 543                                 $disabled{"$proto"} = "option($proto-method)";
 544                                 last;
 545                                 }
 546                         }
 547                 if ($1 eq "dtls")
 548                         {
 549                         foreach my $proto (@dtls)
 550                                 {
 551                                 $disabled{$proto} = "option(dtls)";
 552                                 }
 553                         }
 554                 elsif ($1 eq "ssl")
 555                         {
 556                         # Last one of its kind
 557                         $disabled{"ssl3"} = "option(ssl)";
 558                         }
 559                 elsif ($1 eq "tls")
 560                         {
 561                         # XXX: Tests will fail if all SSL/TLS
 562                         # protocols are disabled.
 563                         foreach my $proto (@tls)
 564                                 {
 565                                 $disabled{$proto} = "option(tls)";
 566                                 }
 567                         }
 568                 elsif ($1 eq "static-engine")
 569                         {
 570                         delete $disabled{"dynamic-engine"};
 571                         }
 572                 elsif ($1 eq "dynamic-engine")
 573                         {
 574                         $disabled{"dynamic-engine"} = "option";
 575                         }
 576                 else
 577                         {
 578                         $disabled{$1} = "option";
 579                         }
 580                 # No longer an automatic choice
 581                 $auto_threads = 0 if ($1 eq "threads");
 582                 }
 583         elsif (/^enable-(.+)$/)
 584                 {
 585                 if ($1 eq "static-engine")
 586                         {
 587                         $disabled{"dynamic-engine"} = "option";
 588                         }
 589                 elsif ($1 eq "dynamic-engine")
 590                         {
 591                         delete $disabled{"dynamic-engine"};
 592                         }
 593                 elsif ($1 eq "zlib-dynamic")
 594                         {
 595                         delete $disabled{"zlib"};
 596                         }
 597                 my $algo = $1;
 598                 delete $disabled{$algo};
 599
 600                 # No longer an automatic choice
 601                 $auto_threads = 0 if ($1 eq "threads");
 602                 }
 603         elsif (/^--strict-warnings$/)
 604                 {
 605                 $strict_warnings = 1;
 606                 }
 607         elsif (/^--debug$/)
 608                 {
 609                 $config{build_type} = "debug";
 610                 }
 611         elsif (/^--release$/)
 612                 {
 613                 $config{build_type} = "release";
 614                 }
 615         elsif (/^386$/)
 616                 { $config{processor}=386; }
 617         elsif (/^fips$/)
 618                 {
 619                 $config{fips}=1;
 620                 }
 621         elsif (/^rsaref$/)
 622                 {
 623                 # No RSAref support any more since it's not needed.
 624                 # The check for the option is there so scripts aren't
 625                 # broken
 626                 }
 627         elsif (/^nofipscanistercheck$/)
 628                 {
 629                 $config{fips} = 1;
 630                 $nofipscanistercheck = 1;
 631                 }
 632         elsif (/^[-+]/)
 633                 {
 634                 if (/^--classic$/)
 635                         {
 636                         $classic=1;
 637                         }
 638                 elsif (/^--prefix=(.*)$/)
 639                         {
 640                         $config{prefix}=$1;
 641                         die "Directory given with --prefix MUST be absolute\n"
 642                                 unless file_name_is_absolute($config{prefix});
 643                         }
 644                 elsif (/^--api=(.*)$/)
 645                         {
 646                         $config{api}=$1;
 647                         }
 648                 elsif (/^--libdir=(.*)$/)
 649                         {
 650                         $config{libdir}=$1;
 651                         }
 652                 elsif (/^--openssldir=(.*)$/)
 653                         {
 654                         $config{openssldir}=$1;
 655                         }
 656                 elsif (/^--with-zlib-lib=(.*)$/)
 657                         {
 658                         $withargs{zlib_lib}=$1;
 659                         }
 660                 elsif (/^--with-zlib-include=(.*)$/)
 661                         {
 662                         $withargs{zlib_include}="-I$1";
 663                         }
 664                 elsif (/^--with-fipslibdir=(.*)$/)
 665                         {
 666                         $config{fipslibdir}="$1/";
 667                         }
 668                 elsif (/^--with-baseaddr=(.*)$/)
 669                         {
 670                         $config{baseaddr}="$1";
 671                         }
 672                 elsif (/^--cross-compile-prefix=(.*)$/)
 673                         {
 674                         $config{cross_compile_prefix}=$1;
 675                         }
 676                 elsif (/^--config=(.*)$/)
 677                         {
 678                         read_config $1;
 679                         }
 680                 elsif (/^-[lL](.*)$/ or /^-Wl,/)
 681                         {
 682                         $libs.=$_." ";
 683                         }
 684                 elsif (/^-D(.*)$/)
 685                         {
 686                         push @user_defines, $1;
 687                         }
 688                 else    # common if (/^[-+]/), just pass down...
 689                         {
 690                         $_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
 691                         $user_cflags.=" ".$_;
 692                         }
 693                 }
 694         else
 695                 {
 696                 die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
 697                 $target=$_;
 698                 }
 699         unless ($_ eq $target || /^no-/ || /^disable-/)
 700                 {
 701                 # "no-..." follows later after implied disactivations
 702                 # have been derived.  (Don't take this too seroiusly,
 703                 # we really only write OPTIONS to the Makefile out of
 704                 # nostalgia.)
 705
 706                 if ($config{options} eq "")
 707                         { $config{options} = $_; }
 708                 else
 709                         { $config{options} .= " ".$_; }
 710                 }
 711
 712         if (defined($config{api}) && !exists $apitable->{$config{api}}) {
 713                 die "***** Unsupported api compatibility level: $config{api}\n",
 714         }
 715
 716         if (keys %deprecated_options)
 717                 {
 718                 warn "***** Deprecated options: ",
 719                         join(", ", keys %deprecated_options), "\n";
 720                 }
 721         if (keys %unsupported_options)
 722                 {
 723                 die "***** Unsupported options: ",
 724                         join(", ", keys %unsupported_options), "\n";
 725                 }
 726         }
 727
 728 if ($config{fips})
 729         {
 730         delete $disabled{"shared"} if ($disabled{"shared"} =~ /^default/);
 731         }
 732 else
 733         {
 734         @{$config{dirs}} = grep !/^fips$/, @{$config{dirs}};
 735         }
 736
 737 my @tocheckfor = (keys %disabled);
 738 while (@tocheckfor) {
 739     my %new_tocheckfor = ();
 740     my @cascade_copy = (@disable_cascades);
 741     while (@cascade_copy) {
 742         my ($test, $descendents) = (shift @cascade_copy, shift @cascade_copy);
 743         if (ref($test) eq "CODE" ? $test->() : defined($disabled{$test})) {
 744             map {
 745                 $new_tocheckfor{$_} = 1; $disabled{$_} = "forced";
 746             } grep { !defined($disabled{$_}) } @$descendents;
 747         }
 748     }
 749     @tocheckfor = (keys %new_tocheckfor);
 750 }
 751
 752 if ($target eq "TABLE") {
 753     foreach (sort keys %table) {
 754         print_table_entry($_, "TABLE");
 755     }
 756     exit 0;
 757 }
 758
 759 if ($target eq "LIST") {
 760     foreach (sort keys %table) {
 761         print $_,"\n" unless $table{$_}->{template};
 762     }
 763     exit 0;
 764 }
 765
 766 if ($target eq "HASH") {
 767     print "%table = (\n";
 768     foreach (sort keys %table) {
 769         print_table_entry($_, "HASH");
 770     }
 771     exit 0;
 772 }
 773
 774 # Backward compatibility?
 775 if ($target =~ m/^CygWin32(-.*)$/) {
 776     $target = "Cygwin".$1;
 777 }
 778
 779 foreach (sort (keys %disabled))
 780         {
 781         $config{options} .= " no-$_";
 782
 783         printf "    no-%-12s %-10s", $_, "[$disabled{$_}]";
 784
 785         if (/^dso$/)
 786                 { }
 787         elsif (/^threads$/)
 788                 { }
 789         elsif (/^shared$/)
 790                 { }
 791         elsif (/^pic$/)
 792                 { }
 793         elsif (/^zlib$/)
 794                 { }
 795         elsif (/^dynamic-engine$/)
 796                 { }
 797         elsif (/^makedepend$/)
 798                 { }
 799         elsif (/^zlib-dynamic$/)
 800                 { }
 801         elsif (/^sse2$/)
 802                 { $no_sse2 = 1; }
 803         elsif (/^engine$/)
 804                 {
 805                 @{$config{dirs}} = grep !/^engines$/, @{$config{dirs}};
 806                 @{$config{sdirs}} = grep !/^engine$/, @{$config{sdirs}};
 807                 push @{$config{openssl_other_defines}}, "OPENSSL_NO_ENGINE";
 808                 }
 809         else
 810                 {
 811                 my ($ALGO, $algo);
 812                 ($ALGO = $algo = $_) =~ tr/[\-a-z]/[_A-Z]/;
 813
 814                 if (/^asm$/ || /^err$/ || /^hw$/ || /^hw-/ || /^async$/
 815                                 || /^autoalginit/ || /^autoerrinit/)
 816                         {
 817                         push @{$config{openssl_other_defines}}, "OPENSSL_NO_$ALGO";
 818                         print " OPENSSL_NO_$ALGO";
 819
 820                         if (/^err$/)    { push @user_defines, "OPENSSL_NO_ERR"; }
 821                         }
 822                 else
 823                         {
 824                         ($ALGO,$algo) = ("RMD160","rmd160") if ($algo eq "ripemd");
 825
 826                         push @{$config{openssl_algorithm_defines}}, "OPENSSL_NO_$ALGO";
 827                         print " OPENSSL_NO_$ALGO";
 828
 829                         # fix-up crypto/directory name(s)
 830                         $algo="whrlpool" if $algo eq "whirlpool";
 831                         $algo="ripemd" if $algo eq "rmd160";
 832                         @{$config{sdirs}} = grep { $_ ne $algo} @{$config{sdirs}};
 833
 834                         print " (skip dir)";
 835                         }
 836                 }
 837
 838         print "\n";
 839         }
 840
 841 print "Configuring for $target\n";
 842
 843 # Support for legacy targets having a name starting with 'debug-'
 844 my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
 845 if ($d) {
 846     $config{build_type} = "debug";
 847
 848     # If we do not find debug-foo in the table, the target is set to foo.
 849     if (!$table{$target}) {
 850         $target = $t;
 851     }
 852 }
 853 $config{target} = $target;
 854 my %target = resolve_config($target);
 855
 856 &usage if (!%target || $target{template});
 857
 858 %target = ( %{$table{DEFAULTS}}, %target );
 859
 860 $target{exe_extension}="";
 861 $target{exe_extension}=".exe" if ($config{target} eq "DJGPP"
 862                                   || $config{target} =~ /^(?:Cygwin|mingw)/);
 863 $target{exe_extension}=".nlm" if ($config{target} =~ /netware/);
 864 $target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
 865
 866 ($target{shared_extension_simple}=$target{shared_extension})
 867     =~ s|\.\$\(SHLIB_MAJOR\)\.\$\(SHLIB_MINOR\)||;
 868 $target{dso_extension}=$target{shared_extension_simple};
 869 ($target{shared_import_extension}=$target{shared_extension_simple}.".a")
 870     if ($config{target} =~ /^(?:Cygwin|mingw)/);
 871
 872
 873 $config{cross_compile_prefix} = $ENV{'CROSS_COMPILE'}
 874     if $config{cross_compile_prefix} eq "";
 875
 876 # Allow overriding the names of some tools.  USE WITH CARE
 877 $config{perl} =    $ENV{'PERL'}    || which("perl5") || which("perl") || "perl";
 878 $target{cc} =      $ENV{'CC'}      || $target{cc}      || "cc";
 879 $target{ranlib} =  $ENV{'RANLIB'}  || $target{ranlib}  || which("ranlib") || "true";
 880 $target{ar} =      $ENV{'AR'}      || $target{ar}      || "ar";
 881 $target{nm} =      $ENV{'NM'}      || $target{nm}      || "nm";
 882
 883 # For cflags, lflags, plib_lflags, ex_libs and defines, add the debug_
 884 # or release_ attributes.
 885 # Do it in such a way that no spurious space is appended (hence the grep).
 886 $config{defines} = [];
 887 $config{cflags} = "";
 888 $config{ex_libs} = "";
 889 $config{shared_ldflag} = "";
 890
 891 # Make sure build_scheme is consistent.
 892 $target{build_scheme} = [ $target{build_scheme} ]
 893     if ref($target{build_scheme}) ne "ARRAY";
 894
 895 ###### TO BE REMOVED WHEN CLASSIC BUILD IS REMOVED
 896 ######
 897 ###### If the user has chosen --classic, we give it to them.
 898 ###### If they try that with an out-of-source config, we complain.
 899 if ($target{build_scheme}->[0] eq "unified" && $classic) {
 900     die "Can't perform a classic build out of source tree\n"
 901         if $srcdir ne $blddir;
 902
 903     $target{build_scheme} = { unix    => [ "unixmake" ],
 904                               windows => undef,
 905                               VMS     => undef } -> {$target{build_scheme}->[1]};
 906
 907     die "Classic mode unavailable on this platform\n"
 908         unless defined($target{build_scheme});
 909 }
 910
 911 my ($builder, $builder_platform, @builder_opts) =
 912     @{$target{build_scheme}};
 913
 914 if ($target =~ /^mingw/ && `$target{cc} --target-help 2>&1` =~ m/-mno-cygwin/m)
 915         {
 916         $config{cflags} .= " -mno-cygwin";
 917         $config{shared_ldflag} .= " -mno-cygwin";
 918         }
 919
 920 if ($target =~ /linux.*-mips/ && !$disabled{asm} && $user_cflags !~ /-m(ips|arch=)/) {
 921         # minimally required architecture flags for assembly modules
 922         $config{cflags}="-mips2 $config{cflags}" if ($target =~ /mips32/);
 923         $config{cflags}="-mips3 $config{cflags}" if ($target =~ /mips64/);
 924 }
 925
 926 my $no_shared_warn=0;
 927 my $no_user_cflags=0;
 928 my $no_user_defines=0;
 929
 930 # The DSO code currently always implements all functions so that no
 931 # applications will have to worry about that from a compilation point
 932 # of view. However, the "method"s may return zero unless that platform
 933 # has support compiled in for them. Currently each method is enabled
 934 # by a define "DSO_<name>" ... we translate the "dso_scheme" config
 935 # string entry into using the following logic;
 936 if (!$disabled{dso} && $target{dso_scheme} ne "")
 937         {
 938         $target{dso_scheme} =~ tr/[a-z]/[A-Z]/;
 939         if ($target{dso_scheme} eq "DLFCN")
 940                 {
 941                 unshift @{$config{defines}}, "DSO_DLFCN", "HAVE_DLFCN_H";
 942                 }
 943         elsif ($target{dso_scheme} eq "DLFCN_NO_H")
 944                 {
 945                 unshift @{$config{defines}}, "DSO_DLFCN";
 946                 }
 947         else
 948                 {
 949                 unshift @{$config{defines}}, "DSO_$target{dso_scheme}";
 950                 }
 951         }
 952
 953 $config{ex_libs}="$libs$config{ex_libs}" if ($libs ne "");
 954
 955 if ($disabled{asm})
 956         {
 957         if ($config{fips})
 958                 {
 959                 @{$config{defines}} = grep !/^[BL]_ENDIAN$/, @{$config{defines}};
 960                 @{$target{defines}} = grep !/^[BL]_ENDIAN$/, @{$target{defines}};
 961                 }
 962         }
 963
 964 # If threads aren't disabled, check how possible they are
 965 unless ($disabled{threads}) {
 966     if ($auto_threads) {
 967         # Enabled by default, disable it forcibly if unavailable
 968         if ($target{thread_scheme} eq "(unknown)") {
 969             $disabled{threads} = "unavailable";
 970         }
 971     } else {
 972         # The user chose to enable threads explicitely, let's see
 973         # if there's a chance that's possible
 974         if ($target{thread_scheme} eq "(unknown)") {
 975             # If the user asked for "threads" and we don't have internal
 976             # knowledge how to do it, [s]he is expected to provide any
 977             # system-dependent compiler options that are necessary.  We
 978             # can't truly check that the given options are correct, but
 979             # we expect the user to know what [s]He is doing.
 980             if ($no_user_cflags && $no_user_defines) {
 981                 die "You asked for multi-threading support, but didn't\n"
 982                     ,"provide any system-specific compiler options\n";
 983             }
 984         }
 985     }
 986 }
 987
 988 # If threads still aren't disabled, add a C macro to ensure the source
 989 # code knows about it.  Any other flag is taken care of by the configs.
 990 unless($disabled{threads}) {
 991     foreach (("defines", "openssl_thread_defines")) {
 992         push @{$config{$_}}, "OPENSSL_THREADS";
 993     }
 994 }
 995
 996 # With "deprecated" disable all deprecated features.
 997 if (defined($disabled{"deprecated"})) {
 998         $config{api} = $maxapi;
 999 }
1000
1001 if ($target{shared_target} eq "")
1002         {
1003         $no_shared_warn = 1
1004             if ((!$disabled{shared} || !$disabled{"dynamic-engine"})
1005                 && !$config{fips});
1006         $disabled{shared} = "no-shared-target";
1007         $disabled{pic} = $disabled{shared} = $disabled{"dynamic-engine"} =
1008             "no-shared-target";
1009         }
1010
1011 if ($disabled{"dynamic-engine"}) {
1012         push @{$config{defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
1013         $config{dynamic_engines} = 0;
1014 } else {
1015         push @{$config{defines}}, "OPENSSL_NO_STATIC_ENGINE";
1016         $config{dynamic_engines} = 1;
1017 }
1018
1019 #
1020 # Platform fix-ups
1021 #
1022
1023 # This saves the build files from having to check
1024 if ($disabled{pic})
1025         {
1026         $target{shared_cflag} = $target{shared_ldflag} =
1027                 $target{shared_rcflag} = "";
1028         }
1029 else
1030         {
1031         push @{$config{defines}}, "OPENSSL_PIC";
1032         }
1033
1034 if ($target{sys_id} ne "")
1035         {
1036         push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
1037         }
1038
1039 unless ($disabled{asm}) {
1040     $target{cpuid_asm_src}=$table{DEFAULTS}->{cpuid_asm_src} if ($config{processor} eq "386");
1041     $target{bn_asm_src} =~ s/\w+-gf2m.c// if (defined($disabled{ec2m}));
1042
1043     # bn-586 is the only one implementing bn_*_part_words
1044     push @{$config{defines}}, "OPENSSL_BN_ASM_PART_WORDS" if ($target{bn_asm_src} =~ /bn-586/);
1045     push @{$config{defines}}, "OPENSSL_IA32_SSE2" if (!$no_sse2 && $target{bn_asm_src} =~ /86/);
1046
1047     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT" if ($target{bn_asm_src} =~ /-mont/);
1048     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT5" if ($target{bn_asm_src} =~ /-mont5/);
1049     push @{$config{defines}}, "OPENSSL_BN_ASM_GF2m" if ($target{bn_asm_src} =~ /-gf2m/);
1050
1051     if ($config{fips}) {
1052         push @{$config{openssl_other_defines}}, "OPENSSL_FIPS";
1053     }
1054
1055     if ($target{sha1_asm_src}) {
1056         push @{$config{defines}}, "SHA1_ASM"   if ($target{sha1_asm_src} =~ /sx86/ || $target{sha1_asm_src} =~ /sha1/);
1057         push @{$config{defines}}, "SHA256_ASM" if ($target{sha1_asm_src} =~ /sha256/);
1058         push @{$config{defines}}, "SHA512_ASM" if ($target{sha1_asm_src} =~ /sha512/);
1059     }
1060     if ($target{md5_asm_src}) {
1061         push @{$config{defines}}, "MD5_ASM";
1062     }
1063     $target{cast_asm_src}=$table{DEFAULTS}->{cast_asm_src} unless $disabled{pic}; # CAST assembler is not PIC
1064     if ($target{rmd160_asm_src}) {
1065         push @{$config{defines}}, "RMD160_ASM";
1066     }
1067     if ($target{aes_asm_src}) {
1068         push @{$config{defines}}, "AES_ASM" if ($target{aes_asm_src} =~ m/\baes-/);;
1069         # aes-ctr.fake is not a real file, only indication that assembler
1070         # module implements AES_ctr32_encrypt...
1071         push @{$config{defines}}, "AES_CTR_ASM" if ($target{aes_asm_src} =~ s/\s*aes-ctr\.fake//);
1072         # aes-xts.fake indicates presence of AES_xts_[en|de]crypt...
1073         push @{$config{defines}}, "AES_XTS_ASM" if ($target{aes_asm_src} =~ s/\s*aes-xts\.fake//);
1074         $target{aes_asm_src} =~ s/\s*(vpaes|aesni)-x86\.s//g if ($no_sse2);
1075         push @{$config{defines}}, "VPAES_ASM" if ($target{aes_asm_src} =~ m/vpaes/);
1076         push @{$config{defines}}, "BSAES_ASM" if ($target{aes_asm_src} =~ m/bsaes/);
1077     }
1078     if ($target{wp_asm_src} =~ /mmx/) {
1079         if ($config{processor} eq "386") {
1080             $target{wp_asm_src}=$table{DEFAULTS}->{wp_asm_src};
1081         } elsif (!$disabled{"whirlpool"}) {
1082             push @{$config{defines}}, "WHIRLPOOL_ASM";
1083         }
1084     }
1085     if ($target{modes_asm_src} =~ /ghash-/) {
1086         push @{$config{defines}}, "GHASH_ASM";
1087     }
1088     if ($target{ec_asm_src} =~ /ecp_nistz256/) {
1089         push @{$config{defines}}, "ECP_NISTZ256_ASM";
1090     }
1091     if ($target{poly1305_asm_src} ne "") {
1092         push @{$config{defines}}, "POLY1305_ASM";
1093     }
1094 }
1095
1096 my $ecc = $target{cc};
1097 if ($^O ne "VMS" && !$disabled{makedepend}) {
1098     # Is the compiler gcc or clang?  $ecc is used below to see if
1099     # error-checking can be turned on.
1100     my $ccpcc = "$config{cross_compile_prefix}$target{cc}";
1101     open(PIPE, "$ccpcc --version 2>&1 |");
1102     my $lines = 2;
1103     while ( <PIPE> ) {
1104         # Find the version number and save the major.
1105         m|(?:.*)\b(\d+)\.\d+\.\d+\b(?:.*)|;
1106         my $compiler_major = $1;
1107         # We know that GNU C version 3 and up as well as all clang
1108         # versions support dependency generation
1109         $config{makedepprog} = $ccpcc
1110             if (/clang/ || (/gcc/ && $compiler_major > 3));
1111         $ecc = "clang" if /clang/;
1112         $ecc = "gcc" if /gcc/;
1113         last if ($config{makedepprog} || !$lines--);
1114     }
1115     close(PIPE);
1116
1117     $config{makedepprog} = which('makedepend') unless $config{makedepprog};
1118     $disabled{makedepend} = "unavailable" unless $config{makedepprog};
1119 }
1120
1121
1122
1123 # Deal with bn_ops ###################################################
1124
1125 $config{bn_ll}                  =0;
1126 $config{export_var_as_fn}       =0;
1127 my $def_int="unsigned int";
1128 $config{rc4_int}                =$def_int;
1129 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
1130
1131 my $count = 0;
1132 foreach (sort split(/\s+/,$target{bn_ops})) {
1133     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
1134     $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
1135     $config{bn_ll}=1                            if $_ eq 'BN_LLONG';
1136     $config{rc4_int}="unsigned char"            if $_ eq 'RC4_CHAR';
1137     ($config{b64l},$config{b64},$config{b32})
1138         =(0,1,0)                                if $_ eq 'SIXTY_FOUR_BIT';
1139     ($config{b64l},$config{b64},$config{b32})
1140         =(1,0,0)                                if $_ eq 'SIXTY_FOUR_BIT_LONG';
1141     ($config{b64l},$config{b64},$config{b32})
1142         =(0,0,1)                                if $_ eq 'THIRTY_TWO_BIT';
1143 }
1144 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
1145     if $count > 1;
1146
1147
1148 # Hack cflags for better warnings (dev option) #######################
1149
1150 # "Stringify" the C flags string.  This permits it to be made part of a string
1151 # and works as well on command lines.
1152 $config{cflags} =~ s/([\\\"])/\\$1/g;
1153
1154 if (defined($config{api})) {
1155     $config{openssl_api_defines} = [ "OPENSSL_MIN_API=".$apitable->{$config{api}} ];
1156     my $apiflag = sprintf("OPENSSL_API_COMPAT=%s", $apitable->{$config{api}});
1157     push @{$config{defines}}, $apiflag;
1158 }
1159
1160 if ($strict_warnings)
1161         {
1162         my $wopt;
1163         die "ERROR --strict-warnings requires gcc or clang"
1164             unless $ecc eq 'gcc' || $ecc eq 'clang';
1165         foreach $wopt (split /\s+/, $gcc_devteam_warn)
1166                 {
1167                 $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1168                 }
1169         if ($ecc eq "clang")
1170                 {
1171                 foreach $wopt (split /\s+/, $clang_devteam_warn)
1172                         {
1173                         $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1174                         }
1175                 }
1176         }
1177
1178 unless ($disabled{"crypto-mdebug-backtrace"})
1179         {
1180         foreach my $wopt (split /\s+/, $memleak_devteam_backtrace)
1181                 {
1182                 $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1183                 }
1184         if ($target =~ /^BSD-/)
1185                 {
1186                 $config{ex_libs} .= " -lexecinfo";
1187                 }
1188         }
1189
1190 if ($user_cflags ne "") { $config{cflags}="$config{cflags}$user_cflags"; }
1191 else                    { $no_user_cflags=1;  }
1192 if (@user_defines) { $config{defines}=[ @{$config{defines}}, @user_defines ]; }
1193 else               { $no_user_defines=1;    }
1194
1195 # ALL MODIFICATIONS TO %config and %target MUST BE DONE FROM HERE ON
1196
1197 unless ($disabled{afalgeng}) {
1198     $config{afalgeng}="";
1199     if ($target =~ m/^linux/) {
1200         my $minver = 4*10000 + 1*100 + 0;
1201         if ($config{cross_compile_prefix} eq "") {
1202             my $verstr = `uname -r`;
1203             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
1204             ($mi2) = $mi2 =~ /(\d+)/;
1205             my $ver = $ma*10000 + $mi1*100 + $mi2;
1206             if ($ver < $minver) {
1207                 $disabled{afalgeng} = "too-old-kernel";
1208             } else {
1209                 push @{$config{engdirs}}, "afalg";
1210             }
1211         } else {
1212             $disabled{afalgeng} = "cross-compiling";
1213         }
1214     } else {
1215         $disabled{afalgeng}  = "not-linux";
1216     }
1217 }
1218
1219 push @{$config{openssl_other_defines}}, "OPENSSL_NO_AFALGENG" if ($disabled{afalgeng});
1220
1221 # If we use the unified build, collect information from build.info files
1222 my %unified_info = ();
1223
1224 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
1225 if ($builder eq "unified") {
1226     # Store the name of the template file we will build the build file from
1227     # in %config.  This may be useful for the build file itself.
1228     my $build_file_template =
1229         catfile($srcdir, "Configurations",
1230                 $builder_platform."-".$target{build_file}.".tmpl");
1231     $build_file_template =
1232         catfile($srcdir, "Configurations", $target{build_file}.".tmpl")
1233         if (! -f $build_file_template);
1234     $config{build_file_template} = $build_file_template;
1235
1236     use lib catdir(dirname(__FILE__),"util");
1237     use with_fallback qw(Text::Template);
1238
1239     sub cleandir {
1240         my $base = shift;
1241         my $dir = shift;
1242         my $relativeto = shift || ".";
1243
1244         $dir = catdir($base,$dir) unless isabsolute($dir);
1245
1246         # Make sure the directories we're building in exists
1247         mkpath($dir);
1248
1249         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
1250         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
1251         return $res;
1252     }
1253
1254     sub cleanfile {
1255         my $base = shift;
1256         my $file = shift;
1257         my $relativeto = shift || ".";
1258
1259         $file = catfile($base,$file) unless isabsolute($file);
1260
1261         my $d = dirname($file);
1262         my $f = basename($file);
1263
1264         # Make sure the directories we're building in exists
1265         mkpath($d);
1266
1267         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
1268         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
1269         return $res;
1270     }
1271
1272     my @build_infos = ( [ ".", "build.info" ] );
1273     foreach (@{$config{dirs}}) {
1274         push @build_infos, [ $_, "build.info" ]
1275             if (-f catfile($srcdir, $_, "build.info"));
1276     }
1277     foreach (@{$config{sdirs}}) {
1278         push @build_infos, [ catdir("crypto", $_), "build.info" ]
1279             if (-f catfile($srcdir, "crypto", $_, "build.info"));
1280     }
1281     foreach (@{$config{engdirs}}) {
1282         push @build_infos, [ catdir("engines", $_), "build.info" ]
1283             if (-f catfile($srcdir, "engines", $_, "build.info"));
1284     }
1285
1286     $config{build_infos} = [ ];
1287
1288     foreach (@build_infos) {
1289         my $sourced = catdir($srcdir, $_->[0]);
1290         my $buildd = catdir($blddir, $_->[0]);
1291
1292         mkpath($buildd);
1293
1294         my $f = $_->[1];
1295         # The basic things we're trying to build
1296         my @programs = ();
1297         my @libraries = ();
1298         my @engines = ();
1299         my @scripts = ();
1300         my @extra = ();
1301         my @overrides = ();
1302         my @intermediates = ();
1303         my @rawlines = ();
1304
1305         my %ordinals = ();
1306         my %sources = ();
1307         my %includes = ();
1308         my %depends = ();
1309         my %renames = ();
1310         my %sharednames = ();
1311         my %generate = ();
1312
1313         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
1314         my $template = Text::Template->new(TYPE => 'FILE',
1315                                            SOURCE => catfile($sourced, $f));
1316         die "Something went wrong with $sourced/$f: $!\n" unless $template;
1317         my @text =
1318             split /^/m,
1319             $template->fill_in(HASH => { config => \%config,
1320                                          target => \%target,
1321                                          disabled => \%disabled,
1322                                          builddir => abs2rel($buildd, $blddir),
1323                                          sourcedir => abs2rel($sourced, $blddir),
1324                                          buildtop => abs2rel($blddir, $blddir),
1325                                          sourcetop => abs2rel($srcdir, $blddir) },
1326                                DELIMITERS => [ "{-", "-}" ]);
1327
1328         # The top item of this stack has the following values
1329         # -2 positive already run and we found ELSE (following ELSIF should fail)
1330         # -1 positive already run (skip until ENDIF)
1331         # 0 negatives so far (if we're at a condition, check it)
1332         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
1333         # 2 positive ELSE (following ELSIF should fail)
1334         my @skip = ();
1335         collect_information(
1336             collect_from_array([ @text ],
1337                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
1338                                                 $l1 =~ s/\\$//; $l1.$l2 }),
1339             # Info we're looking for
1340             qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
1341             => sub {
1342                 if (! @skip || $skip[$#skip] > 0) {
1343                     push @skip, !! $1;
1344                 } else {
1345                     push @skip, -1;
1346                 }
1347             },
1348             qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
1349             => sub { die "ELSIF out of scope" if ! @skip;
1350                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
1351                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
1352                      $skip[$#skip] = !! $1
1353                          if $skip[$#skip] == 0; },
1354             qr/^\s*ELSE\s*$/
1355             => sub { die "ELSE out of scope" if ! @skip;
1356                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
1357                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
1358             qr/^\s*ENDIF\s*$/
1359             => sub { die "ENDIF out of scope" if ! @skip;
1360                      pop @skip; },
1361             qr/^\s*PROGRAMS\s*=\s*(.*)\s*$/
1362             => sub { push @programs, split(/\s+/, $1)
1363                          if !@skip || $skip[$#skip] > 0 },
1364             qr/^\s*LIBS\s*=\s*(.*)\s*$/
1365             => sub { push @libraries, split(/\s+/, $1)
1366                          if !@skip || $skip[$#skip] > 0 },
1367             qr/^\s*ENGINES\s*=\s*(.*)\s*$/
1368             => sub { push @engines, split(/\s+/, $1)
1369                          if !@skip || $skip[$#skip] > 0 },
1370             qr/^\s*SCRIPTS\s*=\s*(.*)\s*$/
1371             => sub { push @scripts, split(/\s+/, $1)
1372                          if !@skip || $skip[$#skip] > 0 },
1373             qr/^\s*EXTRA\s*=\s*(.*)\s*$/
1374             => sub { push @extra, split(/\s+/, $1)
1375                          if !@skip || $skip[$#skip] > 0 },
1376             qr/^\s*OVERRIDES\s*=\s*(.*)\s*$/
1377             => sub { push @overrides, split(/\s+/, $1)
1378                          if !@skip || $skip[$#skip] > 0 },
1379
1380             qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
1381             => sub { push @{$ordinals{$1}}, split(/\s+/, $2)
1382                          if !@skip || $skip[$#skip] > 0 },
1383             qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1384             => sub { push @{$sources{$1}}, split(/\s+/, $2)
1385                          if !@skip || $skip[$#skip] > 0 },
1386             qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1387             => sub { push @{$includes{$1}}, split(/\s+/, $2)
1388                          if !@skip || $skip[$#skip] > 0 },
1389             qr/^\s*DEPEND\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1390             => sub { push @{$depends{$1}}, split(/\s+/, $2)
1391                          if !@skip || $skip[$#skip] > 0 },
1392             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1393             => sub { push @{$generate{$1}}, $2
1394                          if !@skip || $skip[$#skip] > 0 },
1395             qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1396             => sub { push @{$renames{$1}}, split(/\s+/, $2)
1397                          if !@skip || $skip[$#skip] > 0 },
1398             qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1399             => sub { push @{$sharednames{$1}}, split(/\s+/, $2)
1400                          if !@skip || $skip[$#skip] > 0 },
1401             qr/^\s*BEGINRAW\[((?:\\.|[^\\\]])+)\]\s*$/
1402             => sub {
1403                 my $lineiterator = shift;
1404                 my $target_kind = $1;
1405                 while (defined $lineiterator->()) {
1406                     s|\R$||;
1407                     if (/^\s*ENDRAW\[((?:\\.|[^\\\]])+)\]\s*$/) {
1408                         die "ENDRAW doesn't match BEGINRAW"
1409                             if $1 ne $target_kind;
1410                         last;
1411                     }
1412                     next if @skip && $skip[$#skip] <= 0;
1413                     push @rawlines,  $_
1414                         if ($target_kind eq $target{build_file}
1415                             || $target_kind eq $target{build_file}."(".$builder_platform.")");
1416                 }
1417             },
1418             qr/^(?:#.*|\s*)$/ => sub { },
1419             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
1420             "BEFORE" => sub {
1421                 if ($buildinfo_debug) {
1422                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
1423                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1424                 }
1425             },
1426             "AFTER" => sub {
1427                 if ($buildinfo_debug) {
1428                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1429                 }
1430             },
1431             );
1432         die "runaway IF?" if (@skip);
1433
1434         foreach (keys %renames) {
1435             die "$_ renamed to more than one thing: "
1436                 ,join(" ", @{$renames{$_}}),"\n"
1437                 if scalar @{$renames{$_}} > 1;
1438             my $dest = cleanfile($buildd, $_, $blddir);
1439             my $to = cleanfile($buildd, $renames{$_}->[0], $blddir);
1440             die "$dest renamed to more than one thing: "
1441                 ,$unified_info{rename}->{$dest}, $to
1442                 unless !defined($unified_info{rename}->{$dest})
1443                 or $unified_info{rename}->{$dest} eq $to;
1444             $unified_info{rename}->{$dest} = $to;
1445         }
1446
1447         foreach (@programs) {
1448             my $program = cleanfile($buildd, $_, $blddir);
1449             if ($unified_info{rename}->{$program}) {
1450                 $program = $unified_info{rename}->{$program};
1451             }
1452             $unified_info{programs}->{$program} = 1;
1453         }
1454
1455         foreach (@libraries) {
1456             my $library = cleanfile($buildd, $_, $blddir);
1457             if ($unified_info{rename}->{$library}) {
1458                 $library = $unified_info{rename}->{$library};
1459             }
1460             $unified_info{libraries}->{$library} = 1;
1461         }
1462
1463         die <<"EOF" if scalar @engines and !$config{dynamic_engines};
1464 ENGINES can only be used if configured with 'dynamic-engine'.
1465 This is usually a fault in a build.info file.
1466 EOF
1467         foreach (@engines) {
1468             my $library = cleanfile($buildd, $_, $blddir);
1469             if ($unified_info{rename}->{$library}) {
1470                 $library = $unified_info{rename}->{$library};
1471             }
1472             $unified_info{engines}->{$library} = 1;
1473         }
1474
1475         foreach (@scripts) {
1476             my $script = cleanfile($buildd, $_, $blddir);
1477             if ($unified_info{rename}->{$script}) {
1478                 $script = $unified_info{rename}->{$script};
1479             }
1480             $unified_info{scripts}->{$script} = 1;
1481         }
1482
1483         foreach (@extra) {
1484             my $extra = cleanfile($buildd, $_, $blddir);
1485             $unified_info{extra}->{$extra} = 1;
1486         }
1487
1488         foreach (@overrides) {
1489             my $override = cleanfile($buildd, $_, $blddir);
1490             $unified_info{overrides}->{$override} = 1;
1491         }
1492
1493         push @{$unified_info{rawlines}}, @rawlines;
1494
1495         unless ($disabled{shared}) {
1496             # Check sharednames.
1497             foreach (keys %sharednames) {
1498                 my $dest = cleanfile($buildd, $_, $blddir);
1499                 if ($unified_info{rename}->{$dest}) {
1500                     $dest = $unified_info{rename}->{$dest};
1501                 }
1502                 die "shared_name for $dest with multiple values: "
1503                     ,join(" ", @{$sharednames{$_}}),"\n"
1504                     if scalar @{$sharednames{$_}} > 1;
1505                 my $to = cleanfile($buildd, $sharednames{$_}->[0], $blddir);
1506                 die "shared_name found for a library $dest that isn't defined\n"
1507                     unless $unified_info{libraries}->{$dest};
1508                 die "shared_name for $dest with multiple values: "
1509                     ,$unified_info{sharednames}->{$dest}, ", ", $to
1510                     unless !defined($unified_info{sharednames}->{$dest})
1511                     or $unified_info{sharednames}->{$dest} eq $to;
1512                 $unified_info{sharednames}->{$dest} = $to;
1513             }
1514
1515             # Additionally, we set up sharednames for libraries that don't
1516             # have any, as themselves.
1517             foreach (keys %{$unified_info{libraries}}) {
1518                 if (!defined $unified_info{sharednames}->{$_}) {
1519                     $unified_info{sharednames}->{$_} = $_
1520                 }
1521             }
1522         }
1523
1524         foreach (keys %ordinals) {
1525             my $dest = $_;
1526             my $ddest = cleanfile($buildd, $_, $blddir);
1527             if ($unified_info{rename}->{$ddest}) {
1528                 $ddest = $unified_info{rename}->{$ddest};
1529             }
1530             foreach (@{$ordinals{$dest}}) {
1531                 my %known_ordinals =
1532                     (
1533                      crypto =>
1534                      cleanfile($sourced, catfile("util", "libcrypto.num"), $blddir),
1535                      ssl =>
1536                      cleanfile($sourced, catfile("util", "libssl.num"), $blddir)
1537                     );
1538                 my $o = $known_ordinals{$_};
1539                 die "Ordinals for $ddest defined more than once\n"
1540                     if $unified_info{ordinals}->{$ddest};
1541                 $unified_info{ordinals}->{$ddest} = [ $_, $o ];
1542             }
1543         }
1544
1545         foreach (keys %sources) {
1546             my $dest = $_;
1547             my $ddest = cleanfile($buildd, $_, $blddir);
1548             if ($unified_info{rename}->{$ddest}) {
1549                 $ddest = $unified_info{rename}->{$ddest};
1550             }
1551             foreach (@{$sources{$dest}}) {
1552                 my $s = cleanfile($sourced, $_, $blddir);
1553
1554                 # If it isn't in the source tree, we assume it's generated
1555                 # in the build tree
1556                 if (! -f $s) {
1557                     $s = cleanfile($buildd, $_, $blddir);
1558                 }
1559                 # We recognise C and asm files
1560                 if ($s =~ /\.[csS]\b$/) {
1561                     (my $o = $_) =~ s/\.[csS]\b$/.o/;
1562                     $o = cleanfile($buildd, $o, $blddir);
1563                     $unified_info{sources}->{$ddest}->{$o} = 1;
1564                     $unified_info{sources}->{$o}->{$s} = 1;
1565                 } else {
1566                     $unified_info{sources}->{$ddest}->{$s} = 1;
1567                 }
1568             }
1569         }
1570
1571         foreach (keys %generate) {
1572             my $dest = $_;
1573             my $ddest = cleanfile($buildd, $_, $blddir);
1574             if ($unified_info{rename}->{$ddest}) {
1575                 $ddest = $unified_info{rename}->{$ddest};
1576             }
1577             die "more than one generator for $dest: "
1578                     ,join(" ", @{$generate{$_}}),"\n"
1579                     if scalar @{$generate{$_}} > 1;
1580             my @generator = split /\s+/, $generate{$dest}->[0];
1581             $generator[0] = cleanfile($sourced, $generator[0], $blddir),
1582             $unified_info{generate}->{$ddest} = [ @generator ];
1583         }
1584
1585         foreach (keys %depends) {
1586             my $dest = $_;
1587             my $ddest = cleanfile($buildd, $_, $blddir);
1588             if ($unified_info{rename}->{$ddest}) {
1589                 $ddest = $unified_info{rename}->{$ddest};
1590             }
1591             foreach (@{$depends{$dest}}) {
1592                 my $d = cleanfile($sourced, $_, $blddir);
1593
1594                 # If we know it's generated, or assume it is because we can't
1595                 # find it in the source tree, we set file we depend on to be
1596                 # in the build tree rather than the source tree, and assume
1597                 # and that there are lines to build it in a BEGINRAW..ENDRAW
1598                 # section or in the Makefile template.
1599                 if (! -f $d
1600                     || !(grep { $d eq $_ }
1601                          map { cleanfile($srcdir, $_, $blddir) }
1602                          (@generated_headers, @generated_by_make_headers))) {
1603                     $d = cleanfile($buildd, $_, $blddir);
1604                 }
1605                 # Take note if the file to depend on is being renamed
1606                 if ($unified_info{rename}->{$d}) {
1607                     $d = $unified_info{rename}->{$d};
1608                 }
1609                 $unified_info{depends}->{$ddest}->{$d} = 1;
1610                 # If we depend on a header file, let's make sure it
1611                 # can get included
1612                 if ($d =~ /\.h$/) {
1613                     my $i = dirname($d);
1614                     push @{$unified_info{includes}->{$ddest}}, $i
1615                         unless grep { $_ eq $i } @{$unified_info{includes}->{$ddest}};
1616                 }
1617             }
1618         }
1619
1620         foreach (keys %includes) {
1621             my $dest = $_;
1622             my $ddest = cleanfile($buildd, $_, $blddir);
1623             if ($unified_info{rename}->{$ddest}) {
1624                 $ddest = $unified_info{rename}->{$ddest};
1625             }
1626             foreach (@{$includes{$dest}}) {
1627                 my $i = cleandir($sourced, $_, $blddir);
1628                 push @{$unified_info{includes}->{$ddest}}, $i
1629                     unless grep { $_ eq $i } @{$unified_info{includes}->{$ddest}};
1630             }
1631         }
1632     }
1633
1634     ### Make unified_info a bit more efficient
1635     # One level structures
1636     foreach (("programs", "libraries", "engines", "scripts", "extra", "overrides")) {
1637         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
1638     }
1639     # Two level structures
1640     foreach my $l1 (("sources", "ldadd", "depends")) {
1641         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
1642             $unified_info{$l1}->{$l2} =
1643                 [ sort keys %{$unified_info{$l1}->{$l2}} ];
1644         }
1645     }
1646 }
1647
1648 # For the schemes that need it, we provide the old *_obj configs
1649 # from the *_asm_obj ones
1650 foreach (grep /_(asm|aux)_src$/, keys %target) {
1651     my $src = $_;
1652     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
1653     ($target{$obj} = $target{$src}) =~ s/\.[csS]\b/.o/g;
1654 }
1655
1656 # Write down our configuration where it fits #########################
1657
1658 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
1659 print OUT <<"EOF";
1660 package configdata;
1661
1662 use strict;
1663 use warnings;
1664
1665 use Exporter;
1666 #use vars qw(\@ISA \@EXPORT);
1667 our \@ISA = qw(Exporter);
1668 our \@EXPORT = qw(\%config \%target %disabled %withargs %unified_info);
1669
1670 EOF
1671 print OUT "our %config = (\n";
1672 foreach (sort keys %config) {
1673     if (ref($config{$_}) eq "ARRAY") {
1674         print OUT "  ", $_, " => [ ", join(", ",
1675                                            map { quotify("perl", $_) }
1676                                            @{$config{$_}}), " ],\n";
1677     } else {
1678         print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
1679     }
1680 }
1681 print OUT <<"EOF";
1682 );
1683
1684 EOF
1685 print OUT "our %target = (\n";
1686 foreach (sort keys %target) {
1687     if (ref($target{$_}) eq "ARRAY") {
1688         print OUT "  ", $_, " => [ ", join(", ",
1689                                            map { quotify("perl", $_) }
1690                                            @{$target{$_}}), " ],\n";
1691     } else {
1692         print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
1693     }
1694 }
1695 print OUT <<"EOF";
1696 );
1697
1698 EOF
1699 print OUT "our \%available_protocols = (\n";
1700 print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
1701 print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
1702 print OUT <<"EOF";
1703 );
1704
1705 EOF
1706 print OUT "our \%disabled = (\n";
1707 foreach (sort keys %disabled) {
1708     print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
1709 }
1710 print OUT <<"EOF";
1711 );
1712
1713 EOF
1714 print OUT "our %withargs = (\n";
1715 foreach (sort keys %withargs) {
1716     if (ref($withargs{$_}) eq "ARRAY") {
1717         print OUT "  ", $_, " => [ ", join(", ",
1718                                            map { quotify("perl", $_) }
1719                                            @{$withargs{$_}}), " ],\n";
1720     } else {
1721         print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
1722     }
1723 }
1724 print OUT <<"EOF";
1725 );
1726
1727 EOF
1728 if ($builder eq "unified") {
1729     my $recurse;
1730     $recurse = sub {
1731         my $indent = shift;
1732         foreach (@_) {
1733             if (ref $_ eq "ARRAY") {
1734                 print OUT " "x$indent, "[\n";
1735                 foreach (@$_) {
1736                     $recurse->($indent + 4, $_);
1737                 }
1738                 print OUT " "x$indent, "],\n";
1739             } elsif (ref $_ eq "HASH") {
1740                 my %h = %$_;
1741                 print OUT " "x$indent, "{\n";
1742                 foreach (sort keys %h) {
1743                     if (ref $h{$_} eq "") {
1744                         print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
1745                     } else {
1746                         print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
1747                         $recurse->($indent + 8, $h{$_});
1748                     }
1749                 }
1750                 print OUT " "x$indent, "},\n";
1751             } else {
1752                 print OUT " "x$indent, quotify("perl", $_), ",\n";
1753             }
1754         }
1755     };
1756     print OUT "our %unified_info = (\n";
1757     foreach (sort keys %unified_info) {
1758         if (ref $unified_info{$_} eq "") {
1759             print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
1760         } else {
1761             print OUT " "x4, quotify("perl", $_), " =>\n";
1762             $recurse->(8, $unified_info{$_});
1763         }
1764     }
1765     print OUT <<"EOF";
1766 );
1767
1768 EOF
1769 }
1770 print OUT "1;\n";
1771 close(OUT);
1772
1773
1774 print "IsMK1MF       =", ($builder eq "mk1mf" ? "yes" : "no"), "\n";
1775 print "CC            =$target{cc}\n";
1776 print "CFLAG         =$target{cflags} $config{cflags}\n";
1777 print "SHARED_CFLAG  =$target{shared_cflag}\n";
1778 print "DEFINES       =",join(" ", @{$target{defines}}, @{$config{defines}}),"\n";
1779 print "LFLAG         =$target{lflags}\n";
1780 print "PLIB_LFLAG    =$target{plib_lflags}\n";
1781 print "EX_LIBS       =$target{ex_libs} $config{ex_libs}\n";
1782 print "APPS_OBJ      =$target{apps_obj}\n";
1783 print "CPUID_OBJ     =$target{cpuid_obj}\n";
1784 print "UPLINK_OBJ    =$target{uplink_obj}\n";
1785 print "BN_ASM        =$target{bn_obj}\n";
1786 print "EC_ASM        =$target{ec_obj}\n";
1787 print "DES_ENC       =$target{des_obj}\n";
1788 print "AES_ENC       =$target{aes_obj}\n";
1789 print "BF_ENC        =$target{bf_obj}\n";
1790 print "CAST_ENC      =$target{cast_obj}\n";
1791 print "RC4_ENC       =$target{rc4_obj}\n";
1792 print "RC5_ENC       =$target{rc5_obj}\n";
1793 print "MD5_OBJ_ASM   =$target{md5_obj}\n";
1794 print "SHA1_OBJ_ASM  =$target{sha1_obj}\n";
1795 print "RMD160_OBJ_ASM=$target{rmd160_obj}\n";
1796 print "CMLL_ENC      =$target{cmll_obj}\n";
1797 print "MODES_OBJ     =$target{modes_obj}\n";
1798 print "PADLOCK_OBJ   =$target{padlock_obj}\n";
1799 print "CHACHA_ENC    =$target{chacha_obj}\n";
1800 print "POLY1305_OBJ  =$target{poly1305_obj}\n";
1801 print "BLAKE2_OBJ    =$target{blake2_obj}\n";
1802 print "PROCESSOR     =$config{processor}\n";
1803 print "RANLIB        =$target{ranlib}\n";
1804 print "ARFLAGS       =$target{arflags}\n";
1805 print "PERL          =$config{perl}\n";
1806 print "\n";
1807 print "SIXTY_FOUR_BIT_LONG mode\n" if $config{b64l};
1808 print "SIXTY_FOUR_BIT mode\n" if $config{b64};
1809 print "THIRTY_TWO_BIT mode\n" if $config{b32};
1810 print "BN_LLONG mode\n" if $config{bn_ll};
1811 print "RC4 uses $config{rc4_int}\n" if $config{rc4_int} ne $def_int;
1812
1813 for (@generated_headers) {
1814     mkpath(catdir($blddir, dirname($_)));
1815     run_dofile(catfile($blddir, $_),
1816                catfile($srcdir, $_.".in"));
1817 }
1818
1819 ###
1820 ### When the old "unixmake" scheme goes away, so does this function
1821 ###
1822 sub build_Makefile {
1823     run_dofile("Makefile","Makefile.in");
1824
1825     # Copy all Makefile.in to Makefile (except top-level)
1826     use File::Find;
1827     use IO::File;
1828     find(
1829         {
1830             preprocess => sub {
1831                 grep(!/^\./, @_);
1832             },
1833             wanted => sub {
1834                 return if ($_ ne "Makefile.in" || $File::Find::dir eq ".");
1835                 my $in = IO::File->new($_, "r") or
1836                     die sprintf "Error reading Makefile.in in %s: !$\n",
1837                     $File::Find::dir;
1838                 my $out = IO::File->new("Makefile", "w") or
1839                     die sprintf "Error writing Makefile in %s: !$\n",
1840                     $File::Find::dir;
1841                 print $out "# Generated from $_, do not edit\n";
1842                 while (my $line = <$in>) { print $out $line }
1843                 $in->close() or
1844                     die sprintf "Error reading Makefile.in in %s: !$\n",
1845                     $File::Find::dir;
1846                 $out->close() or
1847                     die sprintf "Error writing Makefile in %s: !$\n",
1848                     $File::Find::dir;
1849             },
1850         },
1851         ".");
1852 }
1853
1854 my %builders = (
1855     unified => sub {
1856         run_dofile(catfile($blddir, $target{build_file}),
1857                    $config{build_file_template},
1858                    catfile($srcdir, "Configurations", "common.tmpl"));
1859     },
1860     unixmake => sub {
1861         build_Makefile();
1862
1863         run_dofile("util/domd", "util/domd.in");
1864         chmod 0755, "util/domd";
1865     },
1866     mk1mf => sub {
1867         my $platform = shift;
1868         # The only reason we do this is to have something to build MINFO from
1869         build_Makefile();
1870
1871         # create the ms/version32.rc file if needed
1872         if ($platform ne "netware") {
1873             my ($v1, $v2, $v3, $v4);
1874             if ($config{version_num} =~ /^0x([0-9a-f]{1})([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{1})L$/i) {
1875                 $v1=hex $1;
1876                 $v2=hex $2;
1877                 $v3=hex $3;
1878                 $v4=hex $4;
1879             }
1880             open (OUT,">ms/version32.rc") || die "Can't open ms/version32.rc";
1881             print OUT <<"EOF";
1882 #include <winver.h>
1883
1884 LANGUAGE 0x09,0x01
1885
1886 1 VERSIONINFO
1887   FILEVERSION $v1,$v2,$v3,$v4
1888   PRODUCTVERSION $v1,$v2,$v3,$v4
1889   FILEFLAGSMASK 0x3fL
1890 #ifdef _DEBUG
1891   FILEFLAGS 0x01L
1892 #else
1893   FILEFLAGS 0x00L
1894 #endif
1895   FILEOS VOS__WINDOWS32
1896   FILETYPE VFT_DLL
1897   FILESUBTYPE 0x0L
1898 BEGIN
1899     BLOCK "StringFileInfo"
1900     BEGIN
1901         BLOCK "040904b0"
1902         BEGIN
1903             // Required:
1904             VALUE "CompanyName", "The OpenSSL Project, http://www.openssl.org/\\0"
1905             VALUE "FileDescription", "OpenSSL Shared Library\\0"
1906             VALUE "FileVersion", "$config{version}\\0"
1907 #if defined(CRYPTO)
1908             VALUE "InternalName", "libcrypto32\\0"
1909             VALUE "OriginalFilename", "libcrypto32.dll\\0"
1910 #elif defined(SSL)
1911             VALUE "InternalName", "libssl32\\0"
1912             VALUE "OriginalFilename", "libssl32.dll\\0"
1913 #endif
1914             VALUE "ProductName", "The OpenSSL Toolkit\\0"
1915             VALUE "ProductVersion", "$config{version}\\0"
1916             // Optional:
1917             //VALUE "Comments", "\\0"
1918             VALUE "LegalCopyright", "Copyright © 1998-2015 The OpenSSL Project. Copyright © 1995-1998 Eric A. Young, Tim J. Hudson. All rights reserved.\\0"
1919             //VALUE "LegalTrademarks", "\\0"
1920             //VALUE "PrivateBuild", "\\0"
1921             //VALUE "SpecialBuild", "\\0"
1922         END
1923     END
1924     BLOCK "VarFileInfo"
1925     BEGIN
1926         VALUE "Translation", 0x409, 0x4b0
1927     END
1928 END
1929 EOF
1930             close(OUT);
1931         }
1932     },
1933     );
1934
1935 $builders{$builder}->($builder_platform, @builder_opts);
1936
1937 print <<"EOF";
1938
1939 Configured for $target.
1940 EOF
1941
1942 print <<"EOF" if ($disabled{threads} eq "unavailable");
1943
1944 The library could not be configured for supporting multi-threaded
1945 applications as the compiler options required on this system are not known.
1946 See file INSTALL for details if you need multi-threading.
1947 EOF
1948
1949 print <<"EOF" if ($no_shared_warn);
1950
1951 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
1952 platform, so we will pretend you gave the option 'no-pic', which also disables
1953 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
1954 or position independent code, please let us know (but please first make sure
1955 you have tried with a current version of OpenSSL).
1956 EOF
1957
1958 exit(0);
1959
1960 ######################################################################
1961 #
1962 # Helpers and utility functions
1963 #
1964
1965 # Configuration file reading #########################################
1966
1967 # Helper function to implement conditional inheritance depending on the
1968 # value of $disabled{asm}.  Used in inherit_from values as follows:
1969 #
1970 #      inherit_from => [ "template", asm("asm_tmpl") ]
1971 #
1972 sub asm {
1973     my @x = @_;
1974     sub {
1975         $disabled{asm} ? () : @x;
1976     }
1977 }
1978
1979 our $add_called = 0;
1980 # Helper function to implement adding values to already existing configuration
1981 # values.  It handles elements that are ARRAYs, CODEs and scalars
1982 sub _add {
1983     my $separator = shift;
1984
1985     # If there's any ARRAY in the collection of values OR the separator
1986     # is undef, we will return an ARRAY of combined values, otherwise a
1987     # string of joined values with $separator as the separator.
1988     my $found_array = !defined($separator);
1989
1990     my @values =
1991         map {
1992             my $res = $_;
1993             while (ref($res) eq "CODE") {
1994                 $res = $res->();
1995             }
1996             if (defined($res)) {
1997                 if (ref($res) eq "ARRAY") {
1998                     $found_array = 1;
1999                     @$res;
2000                 } else {
2001                     $res;
2002                 }
2003             } else {
2004                 ();
2005             }
2006     } (@_);
2007
2008     $add_called = 1;
2009
2010     if ($found_array) {
2011         [ @values ];
2012     } else {
2013         join($separator, grep { defined($_) && $_ ne "" } @values);
2014     }
2015 }
2016 sub add_before {
2017     my $separator = " ";
2018     if (ref($_[$#_]) eq "HASH") {
2019         my $opts = pop;
2020         $separator = $opts->{separator};
2021     }
2022     my @x = @_;
2023     sub { _add($separator, @x, @_) };
2024 }
2025 sub add {
2026     my $separator = " ";
2027     if (ref($_[$#_]) eq "HASH") {
2028         my $opts = pop;
2029         $separator = $opts->{separator};
2030     }
2031     my @x = @_;
2032     sub { _add($separator, @_, @x) };
2033 }
2034
2035 # configuration reader, evaluates the input file as a perl script and expects
2036 # it to fill %targets with target configurations.  Those are then added to
2037 # %table.
2038 sub read_config {
2039     my $fname = shift;
2040     open(CONFFILE, "< $fname")
2041         or die "Can't open configuration file '$fname'!\n";
2042     my $x = $/;
2043     undef $/;
2044     my $content = <CONFFILE>;
2045     $/ = $x;
2046     close(CONFFILE);
2047     my %targets = ();
2048     {
2049         local %table = %::table;    # Protect %table from tampering
2050
2051         eval $content;
2052         warn $@ if $@;
2053     }
2054
2055     # For each target, check that it's configured with a hash table.
2056     foreach (keys %targets) {
2057         if (ref($targets{$_}) ne "HASH") {
2058             if (ref($targets{$_}) eq "") {
2059                 warn "Deprecated target configuration for $_, ignoring...\n";
2060             } else {
2061                 warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
2062             }
2063             delete $targets{$_};
2064         }
2065     }
2066
2067     %table = (%table, %targets);
2068
2069 }
2070
2071 # configuration resolver.  Will only resolve all the lazy evalutation
2072 # codeblocks for the chozen target and all those it inherits from,
2073 # recursively
2074 sub resolve_config {
2075     my $target = shift;
2076     my @breadcrumbs = @_;
2077
2078 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
2079
2080     if (grep { $_ eq $target } @breadcrumbs) {
2081         die "inherit_from loop!  target backtrace:\n  "
2082             ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
2083     }
2084
2085     if (!defined($table{$target})) {
2086         warn "Warning! target $target doesn't exist!\n";
2087         return ();
2088     }
2089     # Recurse through all inheritances.  They will be resolved on the
2090     # fly, so when this operation is done, they will all just be a
2091     # bunch of attributes with string values.
2092     # What we get here, though, are keys with references to lists of
2093     # the combined values of them all.  We will deal with lists after
2094     # this stage is done.
2095     my %combined_inheritance = ();
2096     if ($table{$target}->{inherit_from}) {
2097         my @inherit_from =
2098             map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
2099         foreach (@inherit_from) {
2100             my %inherited_config = resolve_config($_, $target, @breadcrumbs);
2101
2102             # 'template' is a marker that's considered private to
2103             # the config that had it.
2104             delete $inherited_config{template};
2105
2106             map {
2107                 if (!$combined_inheritance{$_}) {
2108                     $combined_inheritance{$_} = [];
2109                 }
2110                 push @{$combined_inheritance{$_}}, $inherited_config{$_};
2111             } keys %inherited_config;
2112         }
2113     }
2114
2115     # We won't need inherit_from in this target any more, since we've
2116     # resolved all the inheritances that lead to this
2117     delete $table{$target}->{inherit_from};
2118
2119     # Now is the time to deal with those lists.  Here's the place to
2120     # decide what shall be done with those lists, all based on the
2121     # values of the target we're currently dealing with.
2122     # - If a value is a coderef, it will be executed with the list of
2123     #   inherited values as arguments.
2124     # - If the corresponding key doesn't have a value at all or is the
2125     #   emoty string, the inherited value list will be run through the
2126     #   default combiner (below), and the result becomes this target's
2127     #   value.
2128     # - Otherwise, this target's value is assumed to be a string that
2129     #   will simply override the inherited list of values.
2130     my $default_combiner = add();
2131
2132     my %all_keys =
2133         map { $_ => 1 } (keys %combined_inheritance,
2134                          keys %{$table{$target}});
2135
2136     sub process_values {
2137         my $object    = shift;
2138         my $inherited = shift;  # Always a [ list ]
2139         my $target    = shift;
2140         my $entry     = shift;
2141
2142         $add_called = 0;
2143
2144         while(ref($object) eq "CODE") {
2145             $object = $object->(@$inherited);
2146         }
2147         if (!defined($object)) {
2148             return ();
2149         }
2150         elsif (ref($object) eq "ARRAY") {
2151             local $add_called;  # To make sure recursive calls don't affect it
2152             return [ map { process_values($_, $inherited, $target, $entry) }
2153                      @$object ];
2154         } elsif (ref($object) eq "") {
2155             return $object;
2156         } else {
2157             die "cannot handle reference type ",ref($object)
2158                 ," found in target ",$target," -> ",$entry,"\n";
2159         }
2160     }
2161
2162     foreach (sort keys %all_keys) {
2163         my $previous = $combined_inheritance{$_};
2164
2165         # Current target doesn't have a value for the current key?
2166         # Assign it the default combiner, the rest of this loop body
2167         # will handle it just like any other coderef.
2168         if (!exists $table{$target}->{$_}) {
2169             $table{$target}->{$_} = $default_combiner;
2170         }
2171
2172         $table{$target}->{$_} = process_values($table{$target}->{$_},
2173                                                $combined_inheritance{$_},
2174                                                $target, $_);
2175         unless(defined($table{$target}->{$_})) {
2176             delete $table{$target}->{$_};
2177         }
2178 #        if ($extra_checks &&
2179 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
2180 #            warn "$_ got replaced in $target\n";
2181 #        }
2182     }
2183
2184     # Finally done, return the result.
2185     return %{$table{$target}};
2186 }
2187
2188 sub usage
2189         {
2190         print STDERR $usage;
2191         print STDERR "\npick os/compiler from:\n";
2192         my $j=0;
2193         my $i;
2194         my $k=0;
2195         foreach $i (sort keys %table)
2196                 {
2197                 next if $table{$i}->{template};
2198                 next if $i =~ /^debug/;
2199                 $k += length($i) + 1;
2200                 if ($k > 78)
2201                         {
2202                         print STDERR "\n";
2203                         $k=length($i);
2204                         }
2205                 print STDERR $i . " ";
2206                 }
2207         foreach $i (sort keys %table)
2208                 {
2209                 next if $table{$i}->{template};
2210                 next if $i !~ /^debug/;
2211                 $k += length($i) + 1;
2212                 if ($k > 78)
2213                         {
2214                         print STDERR "\n";
2215                         $k=length($i);
2216                         }
2217                 print STDERR $i . " ";
2218                 }
2219         print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
2220         exit(1);
2221         }
2222
2223 sub run_dofile
2224 {
2225     my $out = shift;
2226     my @templates = @_;
2227
2228     unlink $out || warn "Can't remove $out, $!"
2229         if -f $out;
2230     foreach (@templates) {
2231         die "Can't open $_, $!" unless -f $_;
2232     }
2233     my $cmd = "$config{perl} \"-I.\" \"-Mconfigdata\" $dofile -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
2234     #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
2235     system($cmd);
2236     exit 1 if $? != 0;
2237     rename("$out.new", $out) || die "Can't rename $out.new, $!";
2238 }
2239
2240 # Configuration printer ##############################################
2241
2242 sub print_table_entry
2243 {
2244     my $target = shift;
2245     my %target = resolve_config($target);
2246     my $type = shift;
2247
2248     # Don't print the templates
2249     return if $target{template};
2250
2251     my @sequence = (
2252         "sys_id",
2253         "cc",
2254         "cflags",
2255         "defines",
2256         "unistd",
2257         "ld",
2258         "lflags",
2259         "plib_lflags",
2260         "ex_libs",
2261         "bn_ops",
2262         "cpuid_obj",
2263         "bn_obj",
2264         "ec_obj",
2265         "des_obj",
2266         "aes_obj",
2267         "bf_obj",
2268         "md5_obj",
2269         "sha1_obj",
2270         "cast_obj",
2271         "rc4_obj",
2272         "rmd160_obj",
2273         "rc5_obj",
2274         "wp_obj",
2275         "cmll_obj",
2276         "modes_obj",
2277         "padlock_obj",
2278         "thread_scheme",
2279         "perlasm_scheme",
2280         "dso_scheme",
2281         "shared_target",
2282         "shared_cflag",
2283         "shared_ldflag",
2284         "shared_rcflag",
2285         "shared_extension",
2286         "shared_extension_simple",
2287         "shared_import_extension",
2288         "dso_extension",
2289         "obj_extension",
2290         "exe_extension",
2291         "ranlib",
2292         "ar",
2293         "arflags",
2294         "multilib",
2295         "build_scheme",
2296         );
2297
2298     if ($type eq "TABLE") {
2299         print "\n";
2300         print "*** $target\n";
2301         foreach (@sequence) {
2302             if (ref($target{$_}) eq "ARRAY") {
2303                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
2304             } else {
2305                 printf "\$%-12s = %s\n", $_, $target{$_};
2306             }
2307         }
2308     } elsif ($type eq "HASH") {
2309         my $largest =
2310             length((sort { length($a) <=> length($b) } @sequence)[-1]);
2311         print "    '$target' => {\n";
2312         foreach (@sequence) {
2313             if ($target{$_}) {
2314                 if (ref($target{$_}) eq "ARRAY") {
2315                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
2316                 } else {
2317                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
2318                 }
2319             }
2320         }
2321         print "    },\n";
2322     }
2323 }
2324
2325 # Utility routines ###################################################
2326
2327 # On VMS, if the given file is a logical name, File::Spec::Functions
2328 # will consider it an absolute path.  There are cases when we want a
2329 # purely syntactic check without checking the environment.
2330 sub isabsolute {
2331     my $file = shift;
2332
2333     # On non-platforms, we just use file_name_is_absolute().
2334     return file_name_is_absolute($file) unless $^O eq "VMS";
2335
2336     # If the file spec includes a device or a directpry spec,
2337     # file_name_is_absolute() is perfectly safe.
2338     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
2339
2340     # Here, we know the given file spec isn't absolute
2341     return 0;
2342 }
2343
2344 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
2345 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
2346 # realpath() requires that at least all path components except the last is an
2347 # existing directory.  On VMS, the last component of the directory spec must
2348 # exist.
2349 sub absolutedir {
2350     my $dir = shift;
2351
2352     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
2353     # will return the volume name for the device, no matter what.  Also,
2354     # it will return an incorrect directory spec if the argument is a
2355     # directory that doesn't exist.
2356     if ($^O eq "VMS") {
2357         return rel2abs($dir);
2358     }
2359
2360     # We use realpath() on Unix, since no other will properly clean out
2361     # a directory spec.
2362     use Cwd qw/realpath/;
2363
2364     return realpath($dir);
2365 }
2366
2367 sub which
2368         {
2369         my($name)=@_;
2370         my $path;
2371         foreach $path (split /:/, $ENV{PATH})
2372                 {
2373                 my $fullpath = "$path/$name$target{exe_extension}";
2374                 if (-f $fullpath and -x $fullpath)
2375                         {
2376                         return $fullpath
2377                             unless ($name eq "perl" and
2378                                     system("$fullpath -e " . '\'exit($]<5.0);\''));
2379                         }
2380                 }
2381         }
2382
2383 sub quotify {
2384     my %processors = (
2385         perl    => sub { my $x = shift;
2386                          $x =~ s/([\\\$\@"])/\\$1/g;
2387                          return '"'.$x.'"'; },
2388         );
2389     my $for = shift;
2390     my $processor =
2391         defined($processors{$for}) ? $processors{$for} : sub { shift; };
2392
2393     map { $processor->($_); } @_;
2394 }
2395
2396 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
2397 # $filename is a file name to read from
2398 # $line_concat_cond_re is a regexp detecting a line continuation ending
2399 # $line_concat is a CODEref that takes care of concatenating two lines
2400 sub collect_from_file {
2401     my $filename = shift;
2402     my $line_concat_cond_re = shift;
2403     my $line_concat = shift;
2404
2405     open my $fh, $filename || die "unable to read $filename: $!\n";
2406     return sub {
2407         my $saved_line = "";
2408         $_ = "";
2409         while (<$fh>) {
2410             s|\R$||;
2411             if (defined $line_concat) {
2412                 $_ = $line_concat->($saved_line, $_);
2413                 $saved_line = "";
2414             }
2415             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
2416                 $saved_line = $_;
2417                 next;
2418             }
2419             return $_;
2420         }
2421         die "$filename ending with continuation line\n" if $_;
2422         close $fh;
2423         return undef;
2424     }
2425 }
2426
2427 # collect_from_array($array, $line_concat_cond_re, $line_concat)
2428 # $array is an ARRAYref of lines
2429 # $line_concat_cond_re is a regexp detecting a line continuation ending
2430 # $line_concat is a CODEref that takes care of concatenating two lines
2431 sub collect_from_array {
2432     my $array = shift;
2433     my $line_concat_cond_re = shift;
2434     my $line_concat = shift;
2435     my @array = (@$array);
2436
2437     return sub {
2438         my $saved_line = "";
2439         $_ = "";
2440         while (defined($_ = shift @array)) {
2441             s|\R$||;
2442             if (defined $line_concat) {
2443                 $_ = $line_concat->($saved_line, $_);
2444                 $saved_line = "";
2445             }
2446             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
2447                 $saved_line = $_;
2448                 next;
2449             }
2450             return $_;
2451         }
2452         die "input text ending with continuation line\n" if $_;
2453         return undef;
2454     }
2455 }
2456
2457 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
2458 # $lineiterator is a CODEref that delivers one line at a time.
2459 # All following arguments are regex/CODEref pairs, where the regexp detects a
2460 # line and the CODEref does something with the result of the regexp.
2461 sub collect_information {
2462     my $lineiterator = shift;
2463     my %collectors = @_;
2464
2465     while(defined($_ = $lineiterator->())) {
2466         s|\R$||;
2467         my $found = 0;
2468         if ($collectors{"BEFORE"}) {
2469             $collectors{"BEFORE"}->($_);
2470         }
2471         foreach my $re (keys %collectors) {
2472             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
2473                 $collectors{$re}->($lineiterator);
2474                 $found = 1;
2475             };
2476         }
2477         if ($collectors{"OTHERWISE"}) {
2478             $collectors{"OTHERWISE"}->($lineiterator, $_)
2479                 unless $found || !defined $collectors{"OTHERWISE"};
2480         }
2481         if ($collectors{"AFTER"}) {
2482             $collectors{"AFTER"}->($_);
2483         }
2484     }
2485 }