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     "gost",
 271     "heartbeats",
 272     "hmac",
 273     "hw(-.+)?",
 274     "idea",
 275     "makedepend",
 276     "md2",
 277     "md4",
 278     "md5",
 279     "mdc2",
 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     "ripemd",
 294     "rmd160",
 295     "rsa",
 296     "scrypt",
 297     "sct",
 298     "sctp",
 299     "seed",
 300     "sha",
 301     "shared",
 302     "sock",
 303     "srp",
 304     "srtp",
 305     "sse2",
 306     "ssl",
 307     "ssl-trace",
 308     "static-engine",
 309     "stdio",
 310     "threads",
 311     "tls",
 312     "ts",
 313     "ui",
 314     "unit-test",
 315     "whirlpool",
 316     "weak-ssl-ciphers",
 317     "zlib",
 318     "zlib-dynamic",
 319     );
 320 foreach my $proto ((@tls, @dtls))
 321         {
 322         push(@disablables, $proto);
 323         push(@disablables, "$proto-method");
 324         }
 325
 326 my @deprecated_disablables = (
 327     "ssl2",
 328     );
 329
 330 # All of the following is disabled by default (RC5 was enabled before 0.9.8):
 331
 332 our %disabled = ( # "what"         => "comment"
 333                   "ec_nistp_64_gcc_128" => "default",
 334                   "egd"                 => "default",
 335                   "md2"                 => "default",
 336                   "rc5"                 => "default",
 337                   "sctp"                => "default",
 338                   "shared"              => "default",
 339                   "ssl-trace"           => "default",
 340                   "ssl3"                => "default",
 341                   "ssl3-method"         => "default",
 342                   "unit-test"           => "default",
 343                   "weak-ssl-ciphers"    => "default",
 344                   "zlib"                => "default",
 345                   "zlib-dynamic"        => "default",
 346                   "crypto-mdebug"       => "default",
 347                   "heartbeats"          => "default",
 348                 );
 349
 350 # Note: => pair form used for aesthetics, not to truly make a hash table
 351 my @disable_cascades = (
 352     # "what"            => [ "cascade", ... ]
 353     sub { $config{processor} eq "386" }
 354                         => [ "sse2" ],
 355     "ssl"               => [ "ssl3" ],
 356     "ssl3-method"       => [ "ssl3" ],
 357     "zlib"              => [ "zlib-dynamic" ],
 358     "des"               => [ "mdc2" ],
 359     "ec"                => [ "ecdsa", "ecdh" ],
 360
 361     "dgram"             => [ "dtls", "sctp" ],
 362     "dtls"              => [ @dtls ],
 363
 364     # SSL 3.0, (D)TLS 1.0 and TLS 1.1 require MD5 and SHA
 365     "md5"               => [ "ssl", "tls1", "tls1_1", "dtls1" ],
 366     "sha"               => [ "ssl", "tls1", "tls1_1", "dtls1" ],
 367
 368     # Additionally, SSL 3.0 requires either RSA or DSA+DH
 369     sub { $disabled{rsa}
 370           && ($disabled{dsa} || $disabled{dh}); }
 371                         => [ "ssl" ],
 372
 373     # (D)TLS 1.0 and TLS 1.1 also require either RSA or DSA+DH
 374     # or ECDSA + ECDH.  (D)TLS 1.2 has this requirement as well.
 375     # (XXX: We don't support PSK-only builds).
 376     sub { $disabled{rsa}
 377           && ($disabled{dsa} || $disabled{dh})
 378           && ($disabled{ecdsa} || $disabled{ecdh}); }
 379                         => [ "tls1", "tls1_1", "tls1_2",
 380                              "dtls1", "dtls1_2" ],
 381
 382     "tls"               => [ @tls ],
 383
 384     # SRP and HEARTBEATS require TLSEXT
 385     "tlsext"            => [ "srp", "heartbeats" ],
 386
 387     "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
 388
 389     # Without DSO, we can't load dynamic engines, so don't build them dynamic
 390     "dso"               => [ "dynamic-engine" ],
 391
 392     # Without position independent code, there can be no shared libraries or DSOs
 393     "pic"               => [ "shared" ],
 394     "shared"            => [ "dynamic-engine" ],
 395     "engine"            => [ "afalgeng" ],
 396     "comp"              => [ "zlib" ],
 397     );
 398
 399 # Avoid protocol support holes.  Also disable all versions below N, if version
 400 # N is disabled while N+1 is enabled.
 401 #
 402 my @list = (reverse @tls);
 403 while ((my $first, my $second) = (shift @list, shift @list)) {
 404     last unless @list;
 405     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 406                               => [ @list ] );
 407     unshift @list, $second;
 408 }
 409 my @list = (reverse @dtls);
 410 while ((my $first, my $second) = (shift @list, shift @list)) {
 411     last unless @list;
 412     push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
 413                               => [ @list ] );
 414     unshift @list, $second;
 415 }
 416
 417 # Explicit "no-..." options will be collected in %disabled along with the defaults.
 418 # To remove something from %disabled, use "enable-foo".
 419 # For symmetry, "disable-foo" is a synonym for "no-foo".
 420
 421 my @generated_headers = (
 422     "include/openssl/opensslconf.h",
 423     "crypto/include/internal/bn_conf.h",
 424     "crypto/include/internal/dso_conf.h"
 425     );
 426
 427 my @generated_by_make_headers = (
 428     "crypto/buildinf.h"
 429     );
 430
 431
 432 my $no_sse2=0;
 433
 434 &usage if ($#ARGV < 0);
 435
 436 my $user_cflags="";
 437 my @user_defines=();
 438 $config{openssl_api_defines}=[];
 439 $config{openssl_algorithm_defines}=[];
 440 $config{openssl_thread_defines}=[];
 441 $config{openssl_sys_defines}=[];
 442 $config{openssl_other_defines}=[];
 443 my $libs="";
 444 my $target="";
 445 $config{options}="";
 446 $config{build_type} = "release";
 447
 448 my $classic = 0;
 449
 450 my @argvcopy=@ARGV;
 451
 452 if (grep /^reconf(igure)?$/, @argvcopy) {
 453     if (-f "./configdata.pm") {
 454         my $file = "./configdata.pm";
 455         unless (my $return = do $file) {
 456             die "couldn't parse $file: $@" if $@;
 457             die "couldn't do $file: $!"    unless defined $return;
 458             die "couldn't run $file"       unless $return;
 459         }
 460
 461         @argvcopy = defined($configdata::config{perlargv}) ?
 462             @{$configdata::config{perlargv}} : ();
 463         die "Incorrect data to reconfigure, please do a normal configuration\n"
 464             if (grep(/^reconf/,@argvcopy));
 465         $ENV{CROSS_COMPILE} = $configdata::config{cross_compile_prefix}
 466             if defined($configdata::config{cross_compile_prefix});
 467         $ENV{CROSS_COMPILE} = $configdata::config{cc}
 468             if defined($configdata::config{cc});
 469
 470         print "Reconfiguring with: ", join(" ",@argvcopy), "\n";
 471         print "    CROSS_COMPILE = ",$ENV{CROSS_COMPILE},"\n"
 472             if $ENV{CROSS_COMPILE};
 473         print "    CC = ",$ENV{CC},"\n" if $ENV{CC};
 474     } elsif (open IN, "<Makefile") {
 475         #
 476         # THIS SECTION IS TEMPORARY, it helps transitioning from Makefile
 477         # centered information gathering the reading configdata.pm
 478         #
 479         while (<IN>) {
 480             s|\R$||;
 481             if (/^CONFIGURE_ARGS=\s*(.*)\s*/) {
 482                 # Older form, we split the string and hope for the best
 483                 @argvcopy = split /\s+/, $_;
 484                 die "Incorrect data to reconfigure, please do a normal configuration\n"
 485                     if (grep(/^reconf/,@argvcopy));
 486             } elsif (/^CROSS_COMPILE=\s*(.*)/) {
 487                 $ENV{CROSS_COMPILE}=$1;
 488             } elsif (/^CC=\s*(?:\$\(CROSS_COMPILE\))?(.*?)$/) {
 489                 $ENV{CC}=$1;
 490             }
 491         }
 492         #
 493         # END OF TEMPORARY SECTION
 494         #
 495     } else {
 496         die "Insufficient data to reconfigure, please do a normal configuration\n";
 497     }
 498 }
 499
 500 $config{perlargv} = [ @argvcopy ];
 501
 502 my %unsupported_options = ();
 503 my %deprecated_options = ();
 504 foreach (@argvcopy)
 505         {
 506         # VMS is a case insensitive environment, and depending on settings
 507         # out of our control, we may receive options uppercased.  Let's
 508         # downcase at least the part before any equal sign.
 509         if ($^O eq "VMS")
 510                 {
 511                 s/^([^=]*)/lc($1)/e;
 512                 }
 513         s /^-no-/no-/; # some people just can't read the instructions
 514
 515         # rewrite some options in "enable-..." form
 516         s /^-?-?shared$/enable-shared/;
 517         s /^sctp$/enable-sctp/;
 518         s /^threads$/enable-threads/;
 519         s /^zlib$/enable-zlib/;
 520         s /^zlib-dynamic$/enable-zlib-dynamic/;
 521
 522         if (/^(no|disable|enable)-(.+)$/)
 523                 {
 524                 my $word = $2;
 525                 if (grep { $word =~ /^${_}$/ } @deprecated_disablables)
 526                         {
 527                         $deprecated_options{$_} = 1;
 528                         next;
 529                         }
 530                 elsif (!grep { $word =~ /^${_}$/ } @disablables)
 531                         {
 532                         $unsupported_options{$_} = 1;
 533                         next;
 534                         }
 535                 }
 536         if (/^no-(.+)$/ || /^disable-(.+)$/)
 537                 {
 538                 foreach my $proto ((@tls, @dtls))
 539                         {
 540                         if ($1 eq "$proto-method")
 541                                 {
 542                                 $disabled{"$proto"} = "option($proto-method)";
 543                                 last;
 544                                 }
 545                         }
 546                 if ($1 eq "dtls")
 547                         {
 548                         foreach my $proto (@dtls)
 549                                 {
 550                                 $disabled{$proto} = "option(dtls)";
 551                                 }
 552                         $disabled{"dtls"} = "option(dtls)";
 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 $target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
 864
 865 ($target{shared_extension_simple}=$target{shared_extension})
 866     =~ s|\.\$\(SHLIB_MAJOR\)\.\$\(SHLIB_MINOR\)||;
 867 $target{dso_extension}=$target{shared_extension_simple};
 868 ($target{shared_import_extension}=$target{shared_extension_simple}.".a")
 869     if ($config{target} =~ /^(?:Cygwin|mingw)/);
 870
 871
 872 $config{cross_compile_prefix} = $ENV{'CROSS_COMPILE'}
 873     if $config{cross_compile_prefix} eq "";
 874
 875 # Allow overriding the names of some tools.  USE WITH CARE
 876 $config{perl} =    $ENV{'PERL'}    || which("perl5") || which("perl") || "perl";
 877 $target{cc} =      $ENV{'CC'}      || $target{cc}      || "cc";
 878 $target{ranlib} =  $ENV{'RANLIB'}  || $target{ranlib}  || which("ranlib") || "true";
 879 $target{ar} =      $ENV{'AR'}      || $target{ar}      || "ar";
 880 $target{nm} =      $ENV{'NM'}      || $target{nm}      || "nm";
 881
 882 # For cflags, lflags, plib_lflags, ex_libs and defines, add the debug_
 883 # or release_ attributes.
 884 # Do it in such a way that no spurious space is appended (hence the grep).
 885 $config{defines} = [];
 886 $config{cflags} = "";
 887 $config{ex_libs} = "";
 888 $config{shared_ldflag} = "";
 889
 890 # Make sure build_scheme is consistent.
 891 $target{build_scheme} = [ $target{build_scheme} ]
 892     if ref($target{build_scheme}) ne "ARRAY";
 893
 894 ###### TO BE REMOVED WHEN CLASSIC BUILD IS REMOVED
 895 ######
 896 ###### If the user has chosen --classic, we give it to them.
 897 ###### If they try that with an out-of-source config, we complain.
 898 if ($target{build_scheme}->[0] eq "unified" && $classic) {
 899     die "Can't perform a classic build out of source tree\n"
 900         if $srcdir ne $blddir;
 901
 902     $target{build_scheme} = { unix    => [ "unixmake" ],
 903                               windows => undef,
 904                               VMS     => undef } -> {$target{build_scheme}->[1]};
 905
 906     die "Classic mode unavailable on this platform\n"
 907         unless defined($target{build_scheme});
 908 }
 909
 910 my ($builder, $builder_platform, @builder_opts) =
 911     @{$target{build_scheme}};
 912
 913 if ($target =~ /^mingw/ && `$target{cc} --target-help 2>&1` =~ m/-mno-cygwin/m)
 914         {
 915         $config{cflags} .= " -mno-cygwin";
 916         $config{shared_ldflag} .= " -mno-cygwin";
 917         }
 918
 919 if ($target =~ /linux.*-mips/ && !$disabled{asm} && $user_cflags !~ /-m(ips|arch=)/) {
 920         # minimally required architecture flags for assembly modules
 921         $config{cflags}="-mips2 $config{cflags}" if ($target =~ /mips32/);
 922         $config{cflags}="-mips3 $config{cflags}" if ($target =~ /mips64/);
 923 }
 924
 925 my $no_shared_warn=0;
 926 my $no_user_cflags=0;
 927 my $no_user_defines=0;
 928
 929 # The DSO code currently always implements all functions so that no
 930 # applications will have to worry about that from a compilation point
 931 # of view. However, the "method"s may return zero unless that platform
 932 # has support compiled in for them. Currently each method is enabled
 933 # by a define "DSO_<name>" ... we translate the "dso_scheme" config
 934 # string entry into using the following logic;
 935 if (!$disabled{dso} && $target{dso_scheme} ne "")
 936         {
 937         $target{dso_scheme} =~ tr/[a-z]/[A-Z]/;
 938         if ($target{dso_scheme} eq "DLFCN")
 939                 {
 940                 unshift @{$config{defines}}, "DSO_DLFCN", "HAVE_DLFCN_H";
 941                 }
 942         elsif ($target{dso_scheme} eq "DLFCN_NO_H")
 943                 {
 944                 unshift @{$config{defines}}, "DSO_DLFCN";
 945                 }
 946         else
 947                 {
 948                 unshift @{$config{defines}}, "DSO_$target{dso_scheme}";
 949                 }
 950         }
 951
 952 $config{ex_libs}="$libs$config{ex_libs}" if ($libs ne "");
 953
 954 if ($disabled{asm})
 955         {
 956         if ($config{fips})
 957                 {
 958                 @{$config{defines}} = grep !/^[BL]_ENDIAN$/, @{$config{defines}};
 959                 @{$target{defines}} = grep !/^[BL]_ENDIAN$/, @{$target{defines}};
 960                 }
 961         }
 962
 963 # If threads aren't disabled, check how possible they are
 964 unless ($disabled{threads}) {
 965     if ($auto_threads) {
 966         # Enabled by default, disable it forcibly if unavailable
 967         if ($target{thread_scheme} eq "(unknown)") {
 968             $disabled{threads} = "unavailable";
 969         }
 970     } else {
 971         # The user chose to enable threads explicitely, let's see
 972         # if there's a chance that's possible
 973         if ($target{thread_scheme} eq "(unknown)") {
 974             # If the user asked for "threads" and we don't have internal
 975             # knowledge how to do it, [s]he is expected to provide any
 976             # system-dependent compiler options that are necessary.  We
 977             # can't truly check that the given options are correct, but
 978             # we expect the user to know what [s]He is doing.
 979             if ($no_user_cflags && $no_user_defines) {
 980                 die "You asked for multi-threading support, but didn't\n"
 981                     ,"provide any system-specific compiler options\n";
 982             }
 983         }
 984     }
 985 }
 986
 987 # If threads still aren't disabled, add a C macro to ensure the source
 988 # code knows about it.  Any other flag is taken care of by the configs.
 989 unless($disabled{threads}) {
 990     foreach (("defines", "openssl_thread_defines")) {
 991         push @{$config{$_}}, "OPENSSL_THREADS";
 992     }
 993 }
 994
 995 # With "deprecated" disable all deprecated features.
 996 if (defined($disabled{"deprecated"})) {
 997         $config{api} = $maxapi;
 998 }
 999
1000 if ($target{shared_target} eq "")
1001         {
1002         $no_shared_warn = 1
1003             if ((!$disabled{shared} || !$disabled{"dynamic-engine"})
1004                 && !$config{fips});
1005         $disabled{shared} = "no-shared-target";
1006         $disabled{pic} = $disabled{shared} = $disabled{"dynamic-engine"} =
1007             "no-shared-target";
1008         }
1009
1010 if ($disabled{"dynamic-engine"}) {
1011         push @{$config{defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
1012         $config{dynamic_engines} = 0;
1013 } else {
1014         push @{$config{defines}}, "OPENSSL_NO_STATIC_ENGINE";
1015         $config{dynamic_engines} = 1;
1016 }
1017
1018 #
1019 # Platform fix-ups
1020 #
1021
1022 # This saves the build files from having to check
1023 if ($disabled{pic})
1024         {
1025         $target{shared_cflag} = $target{shared_ldflag} =
1026                 $target{shared_rcflag} = "";
1027         }
1028 else
1029         {
1030         push @{$config{defines}}, "OPENSSL_PIC";
1031         }
1032
1033 if ($target{sys_id} ne "")
1034         {
1035         push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
1036         }
1037
1038 unless ($disabled{asm}) {
1039     $target{cpuid_asm_src}=$table{DEFAULTS}->{cpuid_asm_src} if ($config{processor} eq "386");
1040     $target{bn_asm_src} =~ s/\w+-gf2m.c// if (defined($disabled{ec2m}));
1041
1042     # bn-586 is the only one implementing bn_*_part_words
1043     push @{$config{defines}}, "OPENSSL_BN_ASM_PART_WORDS" if ($target{bn_asm_src} =~ /bn-586/);
1044     push @{$config{defines}}, "OPENSSL_IA32_SSE2" if (!$no_sse2 && $target{bn_asm_src} =~ /86/);
1045
1046     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT" if ($target{bn_asm_src} =~ /-mont/);
1047     push @{$config{defines}}, "OPENSSL_BN_ASM_MONT5" if ($target{bn_asm_src} =~ /-mont5/);
1048     push @{$config{defines}}, "OPENSSL_BN_ASM_GF2m" if ($target{bn_asm_src} =~ /-gf2m/);
1049
1050     if ($config{fips}) {
1051         push @{$config{openssl_other_defines}}, "OPENSSL_FIPS";
1052     }
1053
1054     if ($target{sha1_asm_src}) {
1055         push @{$config{defines}}, "SHA1_ASM"   if ($target{sha1_asm_src} =~ /sx86/ || $target{sha1_asm_src} =~ /sha1/);
1056         push @{$config{defines}}, "SHA256_ASM" if ($target{sha1_asm_src} =~ /sha256/);
1057         push @{$config{defines}}, "SHA512_ASM" if ($target{sha1_asm_src} =~ /sha512/);
1058     }
1059     if ($target{md5_asm_src}) {
1060         push @{$config{defines}}, "MD5_ASM";
1061     }
1062     $target{cast_asm_src}=$table{DEFAULTS}->{cast_asm_src} unless $disabled{pic}; # CAST assembler is not PIC
1063     if ($target{rmd160_asm_src}) {
1064         push @{$config{defines}}, "RMD160_ASM";
1065     }
1066     if ($target{aes_asm_src}) {
1067         push @{$config{defines}}, "AES_ASM" if ($target{aes_asm_src} =~ m/\baes-/);;
1068         # aes-ctr.fake is not a real file, only indication that assembler
1069         # module implements AES_ctr32_encrypt...
1070         push @{$config{defines}}, "AES_CTR_ASM" if ($target{aes_asm_src} =~ s/\s*aes-ctr\.fake//);
1071         # aes-xts.fake indicates presence of AES_xts_[en|de]crypt...
1072         push @{$config{defines}}, "AES_XTS_ASM" if ($target{aes_asm_src} =~ s/\s*aes-xts\.fake//);
1073         $target{aes_asm_src} =~ s/\s*(vpaes|aesni)-x86\.s//g if ($no_sse2);
1074         push @{$config{defines}}, "VPAES_ASM" if ($target{aes_asm_src} =~ m/vpaes/);
1075         push @{$config{defines}}, "BSAES_ASM" if ($target{aes_asm_src} =~ m/bsaes/);
1076     }
1077     if ($target{wp_asm_src} =~ /mmx/) {
1078         if ($config{processor} eq "386") {
1079             $target{wp_asm_src}=$table{DEFAULTS}->{wp_asm_src};
1080         } elsif (!$disabled{"whirlpool"}) {
1081             push @{$config{defines}}, "WHIRLPOOL_ASM";
1082         }
1083     }
1084     if ($target{modes_asm_src} =~ /ghash-/) {
1085         push @{$config{defines}}, "GHASH_ASM";
1086     }
1087     if ($target{ec_asm_src} =~ /ecp_nistz256/) {
1088         push @{$config{defines}}, "ECP_NISTZ256_ASM";
1089     }
1090     if ($target{poly1305_asm_src} ne "") {
1091         push @{$config{defines}}, "POLY1305_ASM";
1092     }
1093 }
1094
1095 my $ecc = $target{cc};
1096 if ($^O ne "VMS" && !$disabled{makedepend}) {
1097     # Is the compiler gcc or clang?  $ecc is used below to see if
1098     # error-checking can be turned on.
1099     my $ccpcc = "$config{cross_compile_prefix}$target{cc}";
1100     open(PIPE, "$ccpcc --version 2>&1 |");
1101     my $lines = 2;
1102     while ( <PIPE> ) {
1103         # Find the version number and save the major.
1104         m|(?:.*)\b(\d+)\.\d+\.\d+\b(?:.*)|;
1105         my $compiler_major = $1;
1106         # We know that GNU C version 3 and up as well as all clang
1107         # versions support dependency generation
1108         $config{makedepprog} = $ccpcc
1109             if (/clang/ || (/gcc/ && $compiler_major > 3));
1110         $ecc = "clang" if /clang/;
1111         $ecc = "gcc" if /gcc/;
1112         last if ($config{makedepprog} || !$lines--);
1113     }
1114     close(PIPE);
1115
1116     $config{makedepprog} = which('makedepend') unless $config{makedepprog};
1117     $disabled{makedepend} = "unavailable" unless $config{makedepprog};
1118 }
1119
1120
1121
1122 # Deal with bn_ops ###################################################
1123
1124 $config{bn_ll}                  =0;
1125 $config{export_var_as_fn}       =0;
1126 my $def_int="unsigned int";
1127 $config{rc4_int}                =$def_int;
1128 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
1129
1130 my $count = 0;
1131 foreach (sort split(/\s+/,$target{bn_ops})) {
1132     $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
1133     $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
1134     $config{bn_ll}=1                            if $_ eq 'BN_LLONG';
1135     $config{rc4_int}="unsigned char"            if $_ eq 'RC4_CHAR';
1136     ($config{b64l},$config{b64},$config{b32})
1137         =(0,1,0)                                if $_ eq 'SIXTY_FOUR_BIT';
1138     ($config{b64l},$config{b64},$config{b32})
1139         =(1,0,0)                                if $_ eq 'SIXTY_FOUR_BIT_LONG';
1140     ($config{b64l},$config{b64},$config{b32})
1141         =(0,0,1)                                if $_ eq 'THIRTY_TWO_BIT';
1142 }
1143 die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
1144     if $count > 1;
1145
1146
1147 # Hack cflags for better warnings (dev option) #######################
1148
1149 # "Stringify" the C flags string.  This permits it to be made part of a string
1150 # and works as well on command lines.
1151 $config{cflags} =~ s/([\\\"])/\\$1/g;
1152
1153 if (defined($config{api})) {
1154     $config{openssl_api_defines} = [ "OPENSSL_MIN_API=".$apitable->{$config{api}} ];
1155     my $apiflag = sprintf("OPENSSL_API_COMPAT=%s", $apitable->{$config{api}});
1156     push @{$config{defines}}, $apiflag;
1157 }
1158
1159 if ($strict_warnings)
1160         {
1161         my $wopt;
1162         die "ERROR --strict-warnings requires gcc or clang"
1163             unless $ecc eq 'gcc' || $ecc eq 'clang';
1164         foreach $wopt (split /\s+/, $gcc_devteam_warn)
1165                 {
1166                 $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1167                 }
1168         if ($ecc eq "clang")
1169                 {
1170                 foreach $wopt (split /\s+/, $clang_devteam_warn)
1171                         {
1172                         $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1173                         }
1174                 }
1175         }
1176
1177 unless ($disabled{"crypto-mdebug-backtrace"})
1178         {
1179         foreach my $wopt (split /\s+/, $memleak_devteam_backtrace)
1180                 {
1181                 $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1182                 }
1183         if ($target =~ /^BSD-/)
1184                 {
1185                 $config{ex_libs} .= " -lexecinfo";
1186                 }
1187         }
1188
1189 if ($user_cflags ne "") { $config{cflags}="$config{cflags}$user_cflags"; }
1190 else                    { $no_user_cflags=1;  }
1191 if (@user_defines) { $config{defines}=[ @{$config{defines}}, @user_defines ]; }
1192 else               { $no_user_defines=1;    }
1193
1194 # ALL MODIFICATIONS TO %config and %target MUST BE DONE FROM HERE ON
1195
1196 unless ($disabled{afalgeng}) {
1197     $config{afalgeng}="";
1198     if ($target =~ m/^linux/) {
1199         my $minver = 4*10000 + 1*100 + 0;
1200         if ($config{cross_compile_prefix} eq "") {
1201             my $verstr = `uname -r`;
1202             my ($ma, $mi1, $mi2) = split("\\.", $verstr);
1203             ($mi2) = $mi2 =~ /(\d+)/;
1204             my $ver = $ma*10000 + $mi1*100 + $mi2;
1205             if ($ver < $minver) {
1206                 $disabled{afalgeng} = "too-old-kernel";
1207             } else {
1208                 push @{$config{engdirs}}, "afalg";
1209             }
1210         } else {
1211             $disabled{afalgeng} = "cross-compiling";
1212         }
1213     } else {
1214         $disabled{afalgeng}  = "not-linux";
1215     }
1216 }
1217
1218 push @{$config{openssl_other_defines}}, "OPENSSL_NO_AFALGENG" if ($disabled{afalgeng});
1219
1220 # If we use the unified build, collect information from build.info files
1221 my %unified_info = ();
1222
1223 my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
1224 if ($builder eq "unified") {
1225     # Store the name of the template file we will build the build file from
1226     # in %config.  This may be useful for the build file itself.
1227     my $build_file_template =
1228         catfile($srcdir, "Configurations",
1229                 $builder_platform."-".$target{build_file}.".tmpl");
1230     $build_file_template =
1231         catfile($srcdir, "Configurations", $target{build_file}.".tmpl")
1232         if (! -f $build_file_template);
1233     $config{build_file_template} = $build_file_template;
1234
1235     use lib catdir(dirname(__FILE__),"util");
1236     use with_fallback qw(Text::Template);
1237
1238     sub cleandir {
1239         my $base = shift;
1240         my $dir = shift;
1241         my $relativeto = shift || ".";
1242
1243         $dir = catdir($base,$dir) unless isabsolute($dir);
1244
1245         # Make sure the directories we're building in exists
1246         mkpath($dir);
1247
1248         my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
1249         #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
1250         return $res;
1251     }
1252
1253     sub cleanfile {
1254         my $base = shift;
1255         my $file = shift;
1256         my $relativeto = shift || ".";
1257
1258         $file = catfile($base,$file) unless isabsolute($file);
1259
1260         my $d = dirname($file);
1261         my $f = basename($file);
1262
1263         # Make sure the directories we're building in exists
1264         mkpath($d);
1265
1266         my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
1267         #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
1268         return $res;
1269     }
1270
1271     my @build_infos = ( [ ".", "build.info" ] );
1272     foreach (@{$config{dirs}}) {
1273         push @build_infos, [ $_, "build.info" ]
1274             if (-f catfile($srcdir, $_, "build.info"));
1275     }
1276     foreach (@{$config{sdirs}}) {
1277         push @build_infos, [ catdir("crypto", $_), "build.info" ]
1278             if (-f catfile($srcdir, "crypto", $_, "build.info"));
1279     }
1280     foreach (@{$config{engdirs}}) {
1281         push @build_infos, [ catdir("engines", $_), "build.info" ]
1282             if (-f catfile($srcdir, "engines", $_, "build.info"));
1283     }
1284
1285     $config{build_infos} = [ ];
1286
1287     foreach (@build_infos) {
1288         my $sourced = catdir($srcdir, $_->[0]);
1289         my $buildd = catdir($blddir, $_->[0]);
1290
1291         mkpath($buildd);
1292
1293         my $f = $_->[1];
1294         # The basic things we're trying to build
1295         my @programs = ();
1296         my @libraries = ();
1297         my @engines = ();
1298         my @scripts = ();
1299         my @extra = ();
1300         my @overrides = ();
1301         my @intermediates = ();
1302         my @rawlines = ();
1303
1304         my %ordinals = ();
1305         my %sources = ();
1306         my %includes = ();
1307         my %depends = ();
1308         my %renames = ();
1309         my %sharednames = ();
1310         my %generate = ();
1311
1312         push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
1313         my $template = Text::Template->new(TYPE => 'FILE',
1314                                            SOURCE => catfile($sourced, $f));
1315         die "Something went wrong with $sourced/$f: $!\n" unless $template;
1316         my @text =
1317             split /^/m,
1318             $template->fill_in(HASH => { config => \%config,
1319                                          target => \%target,
1320                                          disabled => \%disabled,
1321                                          builddir => abs2rel($buildd, $blddir),
1322                                          sourcedir => abs2rel($sourced, $blddir),
1323                                          buildtop => abs2rel($blddir, $blddir),
1324                                          sourcetop => abs2rel($srcdir, $blddir) },
1325                                DELIMITERS => [ "{-", "-}" ]);
1326
1327         # The top item of this stack has the following values
1328         # -2 positive already run and we found ELSE (following ELSIF should fail)
1329         # -1 positive already run (skip until ENDIF)
1330         # 0 negatives so far (if we're at a condition, check it)
1331         # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
1332         # 2 positive ELSE (following ELSIF should fail)
1333         my @skip = ();
1334         collect_information(
1335             collect_from_array([ @text ],
1336                                qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
1337                                                 $l1 =~ s/\\$//; $l1.$l2 }),
1338             # Info we're looking for
1339             qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
1340             => sub {
1341                 if (! @skip || $skip[$#skip] > 0) {
1342                     push @skip, !! $1;
1343                 } else {
1344                     push @skip, -1;
1345                 }
1346             },
1347             qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
1348             => sub { die "ELSIF out of scope" if ! @skip;
1349                      die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
1350                      $skip[$#skip] = -1 if $skip[$#skip] != 0;
1351                      $skip[$#skip] = !! $1
1352                          if $skip[$#skip] == 0; },
1353             qr/^\s*ELSE\s*$/
1354             => sub { die "ELSE out of scope" if ! @skip;
1355                      $skip[$#skip] = -2 if $skip[$#skip] != 0;
1356                      $skip[$#skip] = 2 if $skip[$#skip] == 0; },
1357             qr/^\s*ENDIF\s*$/
1358             => sub { die "ENDIF out of scope" if ! @skip;
1359                      pop @skip; },
1360             qr/^\s*PROGRAMS\s*=\s*(.*)\s*$/
1361             => sub { push @programs, split(/\s+/, $1)
1362                          if !@skip || $skip[$#skip] > 0 },
1363             qr/^\s*LIBS\s*=\s*(.*)\s*$/
1364             => sub { push @libraries, split(/\s+/, $1)
1365                          if !@skip || $skip[$#skip] > 0 },
1366             qr/^\s*ENGINES\s*=\s*(.*)\s*$/
1367             => sub { push @engines, split(/\s+/, $1)
1368                          if !@skip || $skip[$#skip] > 0 },
1369             qr/^\s*SCRIPTS\s*=\s*(.*)\s*$/
1370             => sub { push @scripts, split(/\s+/, $1)
1371                          if !@skip || $skip[$#skip] > 0 },
1372             qr/^\s*EXTRA\s*=\s*(.*)\s*$/
1373             => sub { push @extra, split(/\s+/, $1)
1374                          if !@skip || $skip[$#skip] > 0 },
1375             qr/^\s*OVERRIDES\s*=\s*(.*)\s*$/
1376             => sub { push @overrides, split(/\s+/, $1)
1377                          if !@skip || $skip[$#skip] > 0 },
1378
1379             qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
1380             => sub { push @{$ordinals{$1}}, split(/\s+/, $2)
1381                          if !@skip || $skip[$#skip] > 0 },
1382             qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1383             => sub { push @{$sources{$1}}, split(/\s+/, $2)
1384                          if !@skip || $skip[$#skip] > 0 },
1385             qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1386             => sub { push @{$includes{$1}}, split(/\s+/, $2)
1387                          if !@skip || $skip[$#skip] > 0 },
1388             qr/^\s*DEPEND\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1389             => sub { push @{$depends{$1}}, split(/\s+/, $2)
1390                          if !@skip || $skip[$#skip] > 0 },
1391             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1392             => sub { push @{$generate{$1}}, $2
1393                          if !@skip || $skip[$#skip] > 0 },
1394             qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1395             => sub { push @{$renames{$1}}, split(/\s+/, $2)
1396                          if !@skip || $skip[$#skip] > 0 },
1397             qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
1398             => sub { push @{$sharednames{$1}}, split(/\s+/, $2)
1399                          if !@skip || $skip[$#skip] > 0 },
1400             qr/^\s*BEGINRAW\[((?:\\.|[^\\\]])+)\]\s*$/
1401             => sub {
1402                 my $lineiterator = shift;
1403                 my $target_kind = $1;
1404                 while (defined $lineiterator->()) {
1405                     s|\R$||;
1406                     if (/^\s*ENDRAW\[((?:\\.|[^\\\]])+)\]\s*$/) {
1407                         die "ENDRAW doesn't match BEGINRAW"
1408                             if $1 ne $target_kind;
1409                         last;
1410                     }
1411                     next if @skip && $skip[$#skip] <= 0;
1412                     push @rawlines,  $_
1413                         if ($target_kind eq $target{build_file}
1414                             || $target_kind eq $target{build_file}."(".$builder_platform.")");
1415                 }
1416             },
1417             qr/^(?:#.*|\s*)$/ => sub { },
1418             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
1419             "BEFORE" => sub {
1420                 if ($buildinfo_debug) {
1421                     print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
1422                     print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1423                 }
1424             },
1425             "AFTER" => sub {
1426                 if ($buildinfo_debug) {
1427                     print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
1428                 }
1429             },
1430             );
1431         die "runaway IF?" if (@skip);
1432
1433         foreach (keys %renames) {
1434             die "$_ renamed to more than one thing: "
1435                 ,join(" ", @{$renames{$_}}),"\n"
1436                 if scalar @{$renames{$_}} > 1;
1437             my $dest = cleanfile($buildd, $_, $blddir);
1438             my $to = cleanfile($buildd, $renames{$_}->[0], $blddir);
1439             die "$dest renamed to more than one thing: "
1440                 ,$unified_info{rename}->{$dest}, $to
1441                 unless !defined($unified_info{rename}->{$dest})
1442                 or $unified_info{rename}->{$dest} eq $to;
1443             $unified_info{rename}->{$dest} = $to;
1444         }
1445
1446         foreach (@programs) {
1447             my $program = cleanfile($buildd, $_, $blddir);
1448             if ($unified_info{rename}->{$program}) {
1449                 $program = $unified_info{rename}->{$program};
1450             }
1451             $unified_info{programs}->{$program} = 1;
1452         }
1453
1454         foreach (@libraries) {
1455             my $library = cleanfile($buildd, $_, $blddir);
1456             if ($unified_info{rename}->{$library}) {
1457                 $library = $unified_info{rename}->{$library};
1458             }
1459             $unified_info{libraries}->{$library} = 1;
1460         }
1461
1462         die <<"EOF" if scalar @engines and !$config{dynamic_engines};
1463 ENGINES can only be used if configured with 'dynamic-engine'.
1464 This is usually a fault in a build.info file.
1465 EOF
1466         foreach (@engines) {
1467             my $library = cleanfile($buildd, $_, $blddir);
1468             if ($unified_info{rename}->{$library}) {
1469                 $library = $unified_info{rename}->{$library};
1470             }
1471             $unified_info{engines}->{$library} = 1;
1472         }
1473
1474         foreach (@scripts) {
1475             my $script = cleanfile($buildd, $_, $blddir);
1476             if ($unified_info{rename}->{$script}) {
1477                 $script = $unified_info{rename}->{$script};
1478             }
1479             $unified_info{scripts}->{$script} = 1;
1480         }
1481
1482         foreach (@extra) {
1483             my $extra = cleanfile($buildd, $_, $blddir);
1484             $unified_info{extra}->{$extra} = 1;
1485         }
1486
1487         foreach (@overrides) {
1488             my $override = cleanfile($buildd, $_, $blddir);
1489             $unified_info{overrides}->{$override} = 1;
1490         }
1491
1492         push @{$unified_info{rawlines}}, @rawlines;
1493
1494         unless ($disabled{shared}) {
1495             # Check sharednames.
1496             foreach (keys %sharednames) {
1497                 my $dest = cleanfile($buildd, $_, $blddir);
1498                 if ($unified_info{rename}->{$dest}) {
1499                     $dest = $unified_info{rename}->{$dest};
1500                 }
1501                 die "shared_name for $dest with multiple values: "
1502                     ,join(" ", @{$sharednames{$_}}),"\n"
1503                     if scalar @{$sharednames{$_}} > 1;
1504                 my $to = cleanfile($buildd, $sharednames{$_}->[0], $blddir);
1505                 die "shared_name found for a library $dest that isn't defined\n"
1506                     unless $unified_info{libraries}->{$dest};
1507                 die "shared_name for $dest with multiple values: "
1508                     ,$unified_info{sharednames}->{$dest}, ", ", $to
1509                     unless !defined($unified_info{sharednames}->{$dest})
1510                     or $unified_info{sharednames}->{$dest} eq $to;
1511                 $unified_info{sharednames}->{$dest} = $to;
1512             }
1513
1514             # Additionally, we set up sharednames for libraries that don't
1515             # have any, as themselves.
1516             foreach (keys %{$unified_info{libraries}}) {
1517                 if (!defined $unified_info{sharednames}->{$_}) {
1518                     $unified_info{sharednames}->{$_} = $_
1519                 }
1520             }
1521         }
1522
1523         foreach (keys %ordinals) {
1524             my $dest = $_;
1525             my $ddest = cleanfile($buildd, $_, $blddir);
1526             if ($unified_info{rename}->{$ddest}) {
1527                 $ddest = $unified_info{rename}->{$ddest};
1528             }
1529             foreach (@{$ordinals{$dest}}) {
1530                 my %known_ordinals =
1531                     (
1532                      crypto =>
1533                      cleanfile($sourced, catfile("util", "libcrypto.num"), $blddir),
1534                      ssl =>
1535                      cleanfile($sourced, catfile("util", "libssl.num"), $blddir)
1536                     );
1537                 my $o = $known_ordinals{$_};
1538                 die "Ordinals for $ddest defined more than once\n"
1539                     if $unified_info{ordinals}->{$ddest};
1540                 $unified_info{ordinals}->{$ddest} = [ $_, $o ];
1541             }
1542         }
1543
1544         foreach (keys %sources) {
1545             my $dest = $_;
1546             my $ddest = cleanfile($buildd, $_, $blddir);
1547             if ($unified_info{rename}->{$ddest}) {
1548                 $ddest = $unified_info{rename}->{$ddest};
1549             }
1550             foreach (@{$sources{$dest}}) {
1551                 my $s = cleanfile($sourced, $_, $blddir);
1552
1553                 # If it isn't in the source tree, we assume it's generated
1554                 # in the build tree
1555                 if (! -f $s) {
1556                     $s = cleanfile($buildd, $_, $blddir);
1557                 }
1558                 # We recognise C and asm files
1559                 if ($s =~ /\.[csS]\b$/) {
1560                     (my $o = $_) =~ s/\.[csS]\b$/.o/;
1561                     $o = cleanfile($buildd, $o, $blddir);
1562                     $unified_info{sources}->{$ddest}->{$o} = 1;
1563                     $unified_info{sources}->{$o}->{$s} = 1;
1564                 } else {
1565                     $unified_info{sources}->{$ddest}->{$s} = 1;
1566                 }
1567             }
1568         }
1569
1570         foreach (keys %generate) {
1571             my $dest = $_;
1572             my $ddest = cleanfile($buildd, $_, $blddir);
1573             if ($unified_info{rename}->{$ddest}) {
1574                 $ddest = $unified_info{rename}->{$ddest};
1575             }
1576             die "more than one generator for $dest: "
1577                     ,join(" ", @{$generate{$_}}),"\n"
1578                     if scalar @{$generate{$_}} > 1;
1579             my @generator = split /\s+/, $generate{$dest}->[0];
1580             $generator[0] = cleanfile($sourced, $generator[0], $blddir),
1581             $unified_info{generate}->{$ddest} = [ @generator ];
1582         }
1583
1584         foreach (keys %depends) {
1585             my $dest = $_;
1586             my $ddest = cleanfile($buildd, $_, $blddir);
1587             if ($unified_info{rename}->{$ddest}) {
1588                 $ddest = $unified_info{rename}->{$ddest};
1589             }
1590             foreach (@{$depends{$dest}}) {
1591                 my $d = cleanfile($sourced, $_, $blddir);
1592
1593                 # If we know it's generated, or assume it is because we can't
1594                 # find it in the source tree, we set file we depend on to be
1595                 # in the build tree rather than the source tree, and assume
1596                 # and that there are lines to build it in a BEGINRAW..ENDRAW
1597                 # section or in the Makefile template.
1598                 if (! -f $d
1599                     || (grep { $d eq $_ }
1600                         map { cleanfile($srcdir, $_, $blddir) }
1601                         (@generated_headers, @generated_by_make_headers))) {
1602                     $d = cleanfile($buildd, $_, $blddir);
1603                 }
1604                 # Take note if the file to depend on is being renamed
1605                 if ($unified_info{rename}->{$d}) {
1606                     $d = $unified_info{rename}->{$d};
1607                 }
1608                 $unified_info{depends}->{$ddest}->{$d} = 1;
1609                 # If we depend on a header file, let's make sure it
1610                 # can get included
1611                 if ($d =~ /\.h$/) {
1612                     my $i = dirname($d);
1613                     push @{$unified_info{includes}->{$ddest}}, $i
1614                         unless grep { $_ eq $i } @{$unified_info{includes}->{$ddest}};
1615                 }
1616             }
1617         }
1618
1619         foreach (keys %includes) {
1620             my $dest = $_;
1621             my $ddest = cleanfile($buildd, $_, $blddir);
1622             if ($unified_info{rename}->{$ddest}) {
1623                 $ddest = $unified_info{rename}->{$ddest};
1624             }
1625             foreach (@{$includes{$dest}}) {
1626                 my $i = cleandir($sourced, $_, $blddir);
1627                 push @{$unified_info{includes}->{$ddest}}, $i
1628                     unless grep { $_ eq $i } @{$unified_info{includes}->{$ddest}};
1629             }
1630         }
1631     }
1632
1633     ### Make unified_info a bit more efficient
1634     # One level structures
1635     foreach (("programs", "libraries", "engines", "scripts", "extra", "overrides")) {
1636         $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
1637     }
1638     # Two level structures
1639     foreach my $l1 (("sources", "ldadd", "depends")) {
1640         foreach my $l2 (sort keys %{$unified_info{$l1}}) {
1641             $unified_info{$l1}->{$l2} =
1642                 [ sort keys %{$unified_info{$l1}->{$l2}} ];
1643         }
1644     }
1645 }
1646
1647 # For the schemes that need it, we provide the old *_obj configs
1648 # from the *_asm_obj ones
1649 foreach (grep /_(asm|aux)_src$/, keys %target) {
1650     my $src = $_;
1651     (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
1652     ($target{$obj} = $target{$src}) =~ s/\.[csS]\b/.o/g;
1653 }
1654
1655 # Write down our configuration where it fits #########################
1656
1657 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
1658 print OUT <<"EOF";
1659 package configdata;
1660
1661 use strict;
1662 use warnings;
1663
1664 use Exporter;
1665 #use vars qw(\@ISA \@EXPORT);
1666 our \@ISA = qw(Exporter);
1667 our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables);
1668
1669 EOF
1670 print OUT "our %config = (\n";
1671 foreach (sort keys %config) {
1672     if (ref($config{$_}) eq "ARRAY") {
1673         print OUT "  ", $_, " => [ ", join(", ",
1674                                            map { quotify("perl", $_) }
1675                                            @{$config{$_}}), " ],\n";
1676     } else {
1677         print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
1678     }
1679 }
1680 print OUT <<"EOF";
1681 );
1682
1683 EOF
1684 print OUT "our %target = (\n";
1685 foreach (sort keys %target) {
1686     if (ref($target{$_}) eq "ARRAY") {
1687         print OUT "  ", $_, " => [ ", join(", ",
1688                                            map { quotify("perl", $_) }
1689                                            @{$target{$_}}), " ],\n";
1690     } else {
1691         print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
1692     }
1693 }
1694 print OUT <<"EOF";
1695 );
1696
1697 EOF
1698 print OUT "our \%available_protocols = (\n";
1699 print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
1700 print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
1701 print OUT <<"EOF";
1702 );
1703
1704 EOF
1705 print OUT "our \@disablables = (\n";
1706 foreach (@disablables) {
1707     print OUT "  ", quotify("perl", $_), ",\n";
1708 }
1709 print OUT <<"EOF";
1710 );
1711
1712 EOF
1713 print OUT "our \%disabled = (\n";
1714 foreach (sort keys %disabled) {
1715     print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
1716 }
1717 print OUT <<"EOF";
1718 );
1719
1720 EOF
1721 print OUT "our %withargs = (\n";
1722 foreach (sort keys %withargs) {
1723     if (ref($withargs{$_}) eq "ARRAY") {
1724         print OUT "  ", $_, " => [ ", join(", ",
1725                                            map { quotify("perl", $_) }
1726                                            @{$withargs{$_}}), " ],\n";
1727     } else {
1728         print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
1729     }
1730 }
1731 print OUT <<"EOF";
1732 );
1733
1734 EOF
1735 if ($builder eq "unified") {
1736     my $recurse;
1737     $recurse = sub {
1738         my $indent = shift;
1739         foreach (@_) {
1740             if (ref $_ eq "ARRAY") {
1741                 print OUT " "x$indent, "[\n";
1742                 foreach (@$_) {
1743                     $recurse->($indent + 4, $_);
1744                 }
1745                 print OUT " "x$indent, "],\n";
1746             } elsif (ref $_ eq "HASH") {
1747                 my %h = %$_;
1748                 print OUT " "x$indent, "{\n";
1749                 foreach (sort keys %h) {
1750                     if (ref $h{$_} eq "") {
1751                         print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
1752                     } else {
1753                         print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
1754                         $recurse->($indent + 8, $h{$_});
1755                     }
1756                 }
1757                 print OUT " "x$indent, "},\n";
1758             } else {
1759                 print OUT " "x$indent, quotify("perl", $_), ",\n";
1760             }
1761         }
1762     };
1763     print OUT "our %unified_info = (\n";
1764     foreach (sort keys %unified_info) {
1765         if (ref $unified_info{$_} eq "") {
1766             print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
1767         } else {
1768             print OUT " "x4, quotify("perl", $_), " =>\n";
1769             $recurse->(8, $unified_info{$_});
1770         }
1771     }
1772     print OUT <<"EOF";
1773 );
1774
1775 EOF
1776 }
1777 print OUT "1;\n";
1778 close(OUT);
1779
1780
1781 print "CC            =$target{cc}\n";
1782 print "CFLAG         =$target{cflags} $config{cflags}\n";
1783 print "SHARED_CFLAG  =$target{shared_cflag}\n";
1784 print "DEFINES       =",join(" ", @{$target{defines}}, @{$config{defines}}),"\n";
1785 print "LFLAG         =$target{lflags}\n";
1786 print "PLIB_LFLAG    =$target{plib_lflags}\n";
1787 print "EX_LIBS       =$target{ex_libs} $config{ex_libs}\n";
1788 print "APPS_OBJ      =$target{apps_obj}\n";
1789 print "CPUID_OBJ     =$target{cpuid_obj}\n";
1790 print "UPLINK_OBJ    =$target{uplink_obj}\n";
1791 print "BN_ASM        =$target{bn_obj}\n";
1792 print "EC_ASM        =$target{ec_obj}\n";
1793 print "DES_ENC       =$target{des_obj}\n";
1794 print "AES_ENC       =$target{aes_obj}\n";
1795 print "BF_ENC        =$target{bf_obj}\n";
1796 print "CAST_ENC      =$target{cast_obj}\n";
1797 print "RC4_ENC       =$target{rc4_obj}\n";
1798 print "RC5_ENC       =$target{rc5_obj}\n";
1799 print "MD5_OBJ_ASM   =$target{md5_obj}\n";
1800 print "SHA1_OBJ_ASM  =$target{sha1_obj}\n";
1801 print "RMD160_OBJ_ASM=$target{rmd160_obj}\n";
1802 print "CMLL_ENC      =$target{cmll_obj}\n";
1803 print "MODES_OBJ     =$target{modes_obj}\n";
1804 print "PADLOCK_OBJ   =$target{padlock_obj}\n";
1805 print "CHACHA_ENC    =$target{chacha_obj}\n";
1806 print "POLY1305_OBJ  =$target{poly1305_obj}\n";
1807 print "BLAKE2_OBJ    =$target{blake2_obj}\n";
1808 print "PROCESSOR     =$config{processor}\n";
1809 print "RANLIB        =$target{ranlib}\n";
1810 print "ARFLAGS       =$target{arflags}\n";
1811 print "PERL          =$config{perl}\n";
1812 print "\n";
1813 print "SIXTY_FOUR_BIT_LONG mode\n" if $config{b64l};
1814 print "SIXTY_FOUR_BIT mode\n" if $config{b64};
1815 print "THIRTY_TWO_BIT mode\n" if $config{b32};
1816 print "BN_LLONG mode\n" if $config{bn_ll};
1817 print "RC4 uses $config{rc4_int}\n" if $config{rc4_int} ne $def_int;
1818
1819 for (@generated_headers) {
1820     mkpath(catdir($blddir, dirname($_)));
1821     run_dofile(catfile($blddir, $_),
1822                catfile($srcdir, $_.".in"));
1823 }
1824
1825 ###
1826 ### When the old "unixmake" scheme goes away, so does this function
1827 ###
1828 sub build_Makefile {
1829     run_dofile("Makefile","Makefile.in");
1830
1831     # Copy all Makefile.in to Makefile (except top-level)
1832     use File::Find;
1833     use IO::File;
1834     find(
1835         {
1836             preprocess => sub {
1837                 grep(!/^\./, @_);
1838             },
1839             wanted => sub {
1840                 return if ($_ ne "Makefile.in" || $File::Find::dir eq ".");
1841                 my $in = IO::File->new($_, "r") or
1842                     die sprintf "Error reading Makefile.in in %s: !$\n",
1843                     $File::Find::dir;
1844                 my $out = IO::File->new("Makefile", "w") or
1845                     die sprintf "Error writing Makefile in %s: !$\n",
1846                     $File::Find::dir;
1847                 print $out "# Generated from $_, do not edit\n";
1848                 while (my $line = <$in>) { print $out $line }
1849                 $in->close() or
1850                     die sprintf "Error reading Makefile.in in %s: !$\n",
1851                     $File::Find::dir;
1852                 $out->close() or
1853                     die sprintf "Error writing Makefile in %s: !$\n",
1854                     $File::Find::dir;
1855             },
1856         },
1857         ".");
1858 }
1859
1860 my %builders = (
1861     unified => sub {
1862         run_dofile(catfile($blddir, $target{build_file}),
1863                    $config{build_file_template},
1864                    catfile($srcdir, "Configurations", "common.tmpl"));
1865     },
1866     unixmake => sub {
1867         build_Makefile();
1868
1869         run_dofile("util/domd", "util/domd.in");
1870         chmod 0755, "util/domd";
1871     },
1872     );
1873
1874 $builders{$builder}->($builder_platform, @builder_opts);
1875
1876 print <<"EOF";
1877
1878 Configured for $target.
1879 EOF
1880
1881 print <<"EOF" if ($disabled{threads} eq "unavailable");
1882
1883 The library could not be configured for supporting multi-threaded
1884 applications as the compiler options required on this system are not known.
1885 See file INSTALL for details if you need multi-threading.
1886 EOF
1887
1888 print <<"EOF" if ($no_shared_warn);
1889
1890 The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
1891 platform, so we will pretend you gave the option 'no-pic', which also disables
1892 'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
1893 or position independent code, please let us know (but please first make sure
1894 you have tried with a current version of OpenSSL).
1895 EOF
1896
1897 exit(0);
1898
1899 ######################################################################
1900 #
1901 # Helpers and utility functions
1902 #
1903
1904 # Configuration file reading #########################################
1905
1906 # Note: All of the helper functions are for lazy evaluation.  They all
1907 # return a CODE ref, which will return the intended value when evaluated.
1908 # Thus, whenever there's mention of a returned value, it's about that
1909 # intended value.
1910
1911 # Helper function to implement conditional inheritance depending on the
1912 # value of $disabled{asm}.  Used in inherit_from values as follows:
1913 #
1914 #      inherit_from => [ "template", asm("asm_tmpl") ]
1915 #
1916 sub asm {
1917     my @x = @_;
1918     sub {
1919         $disabled{asm} ? () : @x;
1920     }
1921 }
1922
1923 # Helper function to implement conditional value variants, with a default
1924 # plus additional values based on the value of $config{build_type}.
1925 # Arguments are given in hash table form:
1926 #
1927 #       picker(default => "Basic string: ",
1928 #              debug   => "debug",
1929 #              release => "release")
1930 #
1931 # When configuring with --debug, the resulting string will be
1932 # "Basic string: debug", and when not, it will be "Basic string: release"
1933 #
1934 # This can be used to create variants of sets of flags according to the
1935 # build type:
1936 #
1937 #       cflags => picker(default => "-Wall",
1938 #                        debug   => "-g -O0",
1939 #                        release => "-O3")
1940 #
1941 sub picker {
1942     my %opts = @_;
1943     return sub { add($opts{default} || (),
1944                      $opts{$config{build_type}} || ())->(); }
1945 }
1946
1947 # Helper function to combine several values of different types into one.
1948 # This is useful if you want to combine a string with the result of a
1949 # lazy function, such as:
1950 #
1951 #       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
1952 #
1953 sub combine {
1954     my @stuff = @_;
1955     return sub { add(@stuff)->(); }
1956 }
1957
1958 # Helper function to implement conditional values depending on the value
1959 # of $disabled{threads}.  Can be used as follows:
1960 #
1961 #       cflags => combine("-Wall", threads("-pthread"))
1962 #
1963 sub threads {
1964     my @flags = @_;
1965     return sub { add($disabled{threads} ? () : @flags)->(); }
1966 }
1967
1968
1969
1970 our $add_called = 0;
1971 # Helper function to implement adding values to already existing configuration
1972 # values.  It handles elements that are ARRAYs, CODEs and scalars
1973 sub _add {
1974     my $separator = shift;
1975
1976     # If there's any ARRAY in the collection of values OR the separator
1977     # is undef, we will return an ARRAY of combined values, otherwise a
1978     # string of joined values with $separator as the separator.
1979     my $found_array = !defined($separator);
1980
1981     my @values =
1982         map {
1983             my $res = $_;
1984             while (ref($res) eq "CODE") {
1985                 $res = $res->();
1986             }
1987             if (defined($res)) {
1988                 if (ref($res) eq "ARRAY") {
1989                     $found_array = 1;
1990                     @$res;
1991                 } else {
1992                     $res;
1993                 }
1994             } else {
1995                 ();
1996             }
1997     } (@_);
1998
1999     $add_called = 1;
2000
2001     if ($found_array) {
2002         [ @values ];
2003     } else {
2004         join($separator, grep { defined($_) && $_ ne "" } @values);
2005     }
2006 }
2007 sub add_before {
2008     my $separator = " ";
2009     if (ref($_[$#_]) eq "HASH") {
2010         my $opts = pop;
2011         $separator = $opts->{separator};
2012     }
2013     my @x = @_;
2014     sub { _add($separator, @x, @_) };
2015 }
2016 sub add {
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
2026 # configuration reader, evaluates the input file as a perl script and expects
2027 # it to fill %targets with target configurations.  Those are then added to
2028 # %table.
2029 sub read_config {
2030     my $fname = shift;
2031     open(CONFFILE, "< $fname")
2032         or die "Can't open configuration file '$fname'!\n";
2033     my $x = $/;
2034     undef $/;
2035     my $content = <CONFFILE>;
2036     $/ = $x;
2037     close(CONFFILE);
2038     my %targets = ();
2039     {
2040         local %table = %::table;    # Protect %table from tampering
2041
2042         eval $content;
2043         warn $@ if $@;
2044     }
2045
2046     # For each target, check that it's configured with a hash table.
2047     foreach (keys %targets) {
2048         if (ref($targets{$_}) ne "HASH") {
2049             if (ref($targets{$_}) eq "") {
2050                 warn "Deprecated target configuration for $_, ignoring...\n";
2051             } else {
2052                 warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
2053             }
2054             delete $targets{$_};
2055         }
2056     }
2057
2058     %table = (%table, %targets);
2059
2060 }
2061
2062 # configuration resolver.  Will only resolve all the lazy evalutation
2063 # codeblocks for the chozen target and all those it inherits from,
2064 # recursively
2065 sub resolve_config {
2066     my $target = shift;
2067     my @breadcrumbs = @_;
2068
2069 #    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
2070
2071     if (grep { $_ eq $target } @breadcrumbs) {
2072         die "inherit_from loop!  target backtrace:\n  "
2073             ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
2074     }
2075
2076     if (!defined($table{$target})) {
2077         warn "Warning! target $target doesn't exist!\n";
2078         return ();
2079     }
2080     # Recurse through all inheritances.  They will be resolved on the
2081     # fly, so when this operation is done, they will all just be a
2082     # bunch of attributes with string values.
2083     # What we get here, though, are keys with references to lists of
2084     # the combined values of them all.  We will deal with lists after
2085     # this stage is done.
2086     my %combined_inheritance = ();
2087     if ($table{$target}->{inherit_from}) {
2088         my @inherit_from =
2089             map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
2090         foreach (@inherit_from) {
2091             my %inherited_config = resolve_config($_, $target, @breadcrumbs);
2092
2093             # 'template' is a marker that's considered private to
2094             # the config that had it.
2095             delete $inherited_config{template};
2096
2097             map {
2098                 if (!$combined_inheritance{$_}) {
2099                     $combined_inheritance{$_} = [];
2100                 }
2101                 push @{$combined_inheritance{$_}}, $inherited_config{$_};
2102             } keys %inherited_config;
2103         }
2104     }
2105
2106     # We won't need inherit_from in this target any more, since we've
2107     # resolved all the inheritances that lead to this
2108     delete $table{$target}->{inherit_from};
2109
2110     # Now is the time to deal with those lists.  Here's the place to
2111     # decide what shall be done with those lists, all based on the
2112     # values of the target we're currently dealing with.
2113     # - If a value is a coderef, it will be executed with the list of
2114     #   inherited values as arguments.
2115     # - If the corresponding key doesn't have a value at all or is the
2116     #   emoty string, the inherited value list will be run through the
2117     #   default combiner (below), and the result becomes this target's
2118     #   value.
2119     # - Otherwise, this target's value is assumed to be a string that
2120     #   will simply override the inherited list of values.
2121     my $default_combiner = add();
2122
2123     my %all_keys =
2124         map { $_ => 1 } (keys %combined_inheritance,
2125                          keys %{$table{$target}});
2126
2127     sub process_values {
2128         my $object    = shift;
2129         my $inherited = shift;  # Always a [ list ]
2130         my $target    = shift;
2131         my $entry     = shift;
2132
2133         $add_called = 0;
2134
2135         while(ref($object) eq "CODE") {
2136             $object = $object->(@$inherited);
2137         }
2138         if (!defined($object)) {
2139             return ();
2140         }
2141         elsif (ref($object) eq "ARRAY") {
2142             local $add_called;  # To make sure recursive calls don't affect it
2143             return [ map { process_values($_, $inherited, $target, $entry) }
2144                      @$object ];
2145         } elsif (ref($object) eq "") {
2146             return $object;
2147         } else {
2148             die "cannot handle reference type ",ref($object)
2149                 ," found in target ",$target," -> ",$entry,"\n";
2150         }
2151     }
2152
2153     foreach (sort keys %all_keys) {
2154         my $previous = $combined_inheritance{$_};
2155
2156         # Current target doesn't have a value for the current key?
2157         # Assign it the default combiner, the rest of this loop body
2158         # will handle it just like any other coderef.
2159         if (!exists $table{$target}->{$_}) {
2160             $table{$target}->{$_} = $default_combiner;
2161         }
2162
2163         $table{$target}->{$_} = process_values($table{$target}->{$_},
2164                                                $combined_inheritance{$_},
2165                                                $target, $_);
2166         unless(defined($table{$target}->{$_})) {
2167             delete $table{$target}->{$_};
2168         }
2169 #        if ($extra_checks &&
2170 #            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
2171 #            warn "$_ got replaced in $target\n";
2172 #        }
2173     }
2174
2175     # Finally done, return the result.
2176     return %{$table{$target}};
2177 }
2178
2179 sub usage
2180         {
2181         print STDERR $usage;
2182         print STDERR "\npick os/compiler from:\n";
2183         my $j=0;
2184         my $i;
2185         my $k=0;
2186         foreach $i (sort keys %table)
2187                 {
2188                 next if $table{$i}->{template};
2189                 next if $i =~ /^debug/;
2190                 $k += length($i) + 1;
2191                 if ($k > 78)
2192                         {
2193                         print STDERR "\n";
2194                         $k=length($i);
2195                         }
2196                 print STDERR $i . " ";
2197                 }
2198         foreach $i (sort keys %table)
2199                 {
2200                 next if $table{$i}->{template};
2201                 next if $i !~ /^debug/;
2202                 $k += length($i) + 1;
2203                 if ($k > 78)
2204                         {
2205                         print STDERR "\n";
2206                         $k=length($i);
2207                         }
2208                 print STDERR $i . " ";
2209                 }
2210         print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
2211         exit(1);
2212         }
2213
2214 sub run_dofile
2215 {
2216     my $out = shift;
2217     my @templates = @_;
2218
2219     unlink $out || warn "Can't remove $out, $!"
2220         if -f $out;
2221     foreach (@templates) {
2222         die "Can't open $_, $!" unless -f $_;
2223     }
2224     my $cmd = "$config{perl} \"-I.\" \"-Mconfigdata\" $dofile -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
2225     #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
2226     system($cmd);
2227     exit 1 if $? != 0;
2228     rename("$out.new", $out) || die "Can't rename $out.new, $!";
2229 }
2230
2231 # Configuration printer ##############################################
2232
2233 sub print_table_entry
2234 {
2235     my $target = shift;
2236     my %target = resolve_config($target);
2237     my $type = shift;
2238
2239     # Don't print the templates
2240     return if $target{template};
2241
2242     my @sequence = (
2243         "sys_id",
2244         "cc",
2245         "cflags",
2246         "defines",
2247         "unistd",
2248         "ld",
2249         "lflags",
2250         "plib_lflags",
2251         "ex_libs",
2252         "bn_ops",
2253         "cpuid_obj",
2254         "bn_obj",
2255         "ec_obj",
2256         "des_obj",
2257         "aes_obj",
2258         "bf_obj",
2259         "md5_obj",
2260         "sha1_obj",
2261         "cast_obj",
2262         "rc4_obj",
2263         "rmd160_obj",
2264         "rc5_obj",
2265         "wp_obj",
2266         "cmll_obj",
2267         "modes_obj",
2268         "padlock_obj",
2269         "thread_scheme",
2270         "perlasm_scheme",
2271         "dso_scheme",
2272         "shared_target",
2273         "shared_cflag",
2274         "shared_ldflag",
2275         "shared_rcflag",
2276         "shared_extension",
2277         "shared_extension_simple",
2278         "shared_import_extension",
2279         "dso_extension",
2280         "obj_extension",
2281         "exe_extension",
2282         "ranlib",
2283         "ar",
2284         "arflags",
2285         "multilib",
2286         "build_scheme",
2287         );
2288
2289     if ($type eq "TABLE") {
2290         print "\n";
2291         print "*** $target\n";
2292         foreach (@sequence) {
2293             if (ref($target{$_}) eq "ARRAY") {
2294                 printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
2295             } else {
2296                 printf "\$%-12s = %s\n", $_, $target{$_};
2297             }
2298         }
2299     } elsif ($type eq "HASH") {
2300         my $largest =
2301             length((sort { length($a) <=> length($b) } @sequence)[-1]);
2302         print "    '$target' => {\n";
2303         foreach (@sequence) {
2304             if ($target{$_}) {
2305                 if (ref($target{$_}) eq "ARRAY") {
2306                     print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
2307                 } else {
2308                     print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
2309                 }
2310             }
2311         }
2312         print "    },\n";
2313     }
2314 }
2315
2316 # Utility routines ###################################################
2317
2318 # On VMS, if the given file is a logical name, File::Spec::Functions
2319 # will consider it an absolute path.  There are cases when we want a
2320 # purely syntactic check without checking the environment.
2321 sub isabsolute {
2322     my $file = shift;
2323
2324     # On non-platforms, we just use file_name_is_absolute().
2325     return file_name_is_absolute($file) unless $^O eq "VMS";
2326
2327     # If the file spec includes a device or a directpry spec,
2328     # file_name_is_absolute() is perfectly safe.
2329     return file_name_is_absolute($file) if $file =~ m|[:\[]|;
2330
2331     # Here, we know the given file spec isn't absolute
2332     return 0;
2333 }
2334
2335 # Makes a directory absolute and cleans out /../ in paths like foo/../bar
2336 # On some platforms, this uses rel2abs(), while on others, realpath() is used.
2337 # realpath() requires that at least all path components except the last is an
2338 # existing directory.  On VMS, the last component of the directory spec must
2339 # exist.
2340 sub absolutedir {
2341     my $dir = shift;
2342
2343     # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
2344     # will return the volume name for the device, no matter what.  Also,
2345     # it will return an incorrect directory spec if the argument is a
2346     # directory that doesn't exist.
2347     if ($^O eq "VMS") {
2348         return rel2abs($dir);
2349     }
2350
2351     # We use realpath() on Unix, since no other will properly clean out
2352     # a directory spec.
2353     use Cwd qw/realpath/;
2354
2355     return realpath($dir);
2356 }
2357
2358 sub which
2359         {
2360         my($name)=@_;
2361         my $path;
2362         foreach $path (split /:/, $ENV{PATH})
2363                 {
2364                 my $fullpath = "$path/$name$target{exe_extension}";
2365                 if (-f $fullpath and -x $fullpath)
2366                         {
2367                         return $fullpath
2368                             unless ($name eq "perl" and
2369                                     system("$fullpath -e " . '\'exit($]<5.0);\''));
2370                         }
2371                 }
2372         }
2373
2374 sub quotify {
2375     my %processors = (
2376         perl    => sub { my $x = shift;
2377                          $x =~ s/([\\\$\@"])/\\$1/g;
2378                          return '"'.$x.'"'; },
2379         );
2380     my $for = shift;
2381     my $processor =
2382         defined($processors{$for}) ? $processors{$for} : sub { shift; };
2383
2384     map { $processor->($_); } @_;
2385 }
2386
2387 # collect_from_file($filename, $line_concat_cond_re, $line_concat)
2388 # $filename is a file name to read from
2389 # $line_concat_cond_re is a regexp detecting a line continuation ending
2390 # $line_concat is a CODEref that takes care of concatenating two lines
2391 sub collect_from_file {
2392     my $filename = shift;
2393     my $line_concat_cond_re = shift;
2394     my $line_concat = shift;
2395
2396     open my $fh, $filename || die "unable to read $filename: $!\n";
2397     return sub {
2398         my $saved_line = "";
2399         $_ = "";
2400         while (<$fh>) {
2401             s|\R$||;
2402             if (defined $line_concat) {
2403                 $_ = $line_concat->($saved_line, $_);
2404                 $saved_line = "";
2405             }
2406             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
2407                 $saved_line = $_;
2408                 next;
2409             }
2410             return $_;
2411         }
2412         die "$filename ending with continuation line\n" if $_;
2413         close $fh;
2414         return undef;
2415     }
2416 }
2417
2418 # collect_from_array($array, $line_concat_cond_re, $line_concat)
2419 # $array is an ARRAYref of lines
2420 # $line_concat_cond_re is a regexp detecting a line continuation ending
2421 # $line_concat is a CODEref that takes care of concatenating two lines
2422 sub collect_from_array {
2423     my $array = shift;
2424     my $line_concat_cond_re = shift;
2425     my $line_concat = shift;
2426     my @array = (@$array);
2427
2428     return sub {
2429         my $saved_line = "";
2430         $_ = "";
2431         while (defined($_ = shift @array)) {
2432             s|\R$||;
2433             if (defined $line_concat) {
2434                 $_ = $line_concat->($saved_line, $_);
2435                 $saved_line = "";
2436             }
2437             if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
2438                 $saved_line = $_;
2439                 next;
2440             }
2441             return $_;
2442         }
2443         die "input text ending with continuation line\n" if $_;
2444         return undef;
2445     }
2446 }
2447
2448 # collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
2449 # $lineiterator is a CODEref that delivers one line at a time.
2450 # All following arguments are regex/CODEref pairs, where the regexp detects a
2451 # line and the CODEref does something with the result of the regexp.
2452 sub collect_information {
2453     my $lineiterator = shift;
2454     my %collectors = @_;
2455
2456     while(defined($_ = $lineiterator->())) {
2457         s|\R$||;
2458         my $found = 0;
2459         if ($collectors{"BEFORE"}) {
2460             $collectors{"BEFORE"}->($_);
2461         }
2462         foreach my $re (keys %collectors) {
2463             if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
2464                 $collectors{$re}->($lineiterator);
2465                 $found = 1;
2466             };
2467         }
2468         if ($collectors{"OTHERWISE"}) {
2469             $collectors{"OTHERWISE"}->($lineiterator, $_)
2470                 unless $found || !defined $collectors{"OTHERWISE"};
2471         }
2472         if ($collectors{"AFTER"}) {
2473             $collectors{"AFTER"}->($_);
2474         }
2475     }
2476 }