Configure 80.3 KB
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#! /usr/bin/env perl
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# -*- mode: perl; -*-
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##  Configure -- OpenSSL source tree configuration script
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require 5.10.0;
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use strict;
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use File::Basename;
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use File::Spec::Functions qw/:DEFAULT abs2rel rel2abs/;
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use File::Path qw/mkpath/;
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# see INSTALL for instructions.
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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";
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# Options:
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#
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# --config      add the given configuration file, which will be read after
#               any "Configurations*" files that are found in the same
#               directory as this script.
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# --prefix      prefix for the OpenSSL installation, which includes the
#               directories bin, lib, include, share/man, share/doc/openssl
#               This becomes the value of INSTALLTOP in Makefile
#               (Default: /usr/local)
# --openssldir  OpenSSL data area, such as openssl.cnf, certificates and keys.
#               If it's a relative directory, it will be added on the directory
#               given with --prefix.
#               This becomes the value of OPENSSLDIR in Makefile and in C.
#               (Default: PREFIX/ssl)
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#
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# --cross-compile-prefix Add specified prefix to binutils components.
#
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# --api         One of 0.9.8, 1.0.0 or 1.1.0.  Do not compile support for
#               interfaces deprecated as of the specified OpenSSL version.
#
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# no-hw-xxx     do not compile support for specific crypto hardware.
#               Generic OpenSSL-style methods relating to this support
#               are always compiled but return NULL if the hardware
#               support isn't compiled.
# no-hw         do not compile support for any crypto hardware.
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# [no-]threads  [don't] try to create a library that is suitable for
#               multithreaded applications (default is "threads" if we
#               know how to do it)
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# [no-]shared	[don't] try to create shared libraries when supported.
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# [no-]pic      [don't] try to build position independent code when supported.
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#               If disabled, it also disables shared and dynamic-engine.
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# no-asm        do not use assembler
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# no-dso        do not compile in any native shared-library methods. This
#               will ensure that all methods just return NULL.
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# no-egd        do not compile support for the entropy-gathering daemon APIs
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# [no-]zlib     [don't] compile support for zlib compression.
# zlib-dynamic	Like "zlib", but the zlib library is expected to be a shared
#		library and will be loaded in run-time by the OpenSSL library.
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# sctp          include SCTP support
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# 386           generate 80386 code
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# enable-weak-ssl-ciphers
#               Enable weak ciphers that are disabled by default. This currently
#               only includes RC4 based ciphers.
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# no-sse2	disables IA-32 SSE2 code, above option implies no-sse2
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# no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
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# -<xxx> +<xxx> compiler options are passed through
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#
# DEBUG_SAFESTACK use type-safe stacks to enforce type-safety on stack items
#		provided to stack calls. Generates unique stack functions for
#		each possible stack type.
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# BN_LLONG	use the type 'long long' in crypto/bn/bn.h
# RC4_CHAR	use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
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# Following are set automatically by this script
#
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# MD5_ASM	use some extra md5 assember,
# SHA1_ASM	use some extra sha1 assember, must define L_ENDIAN for x86
# RMD160_ASM	use some extra ripemd160 assember,
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# SHA256_ASM	sha256_block is implemented in assembler
# SHA512_ASM	sha512_block is implemented in assembler
# AES_ASM	ASE_[en|de]crypt is implemented in assembler
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# Minimum warning options... any contributions to OpenSSL should at least get
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# past these.
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# DEBUG_UNUSED enables __owur (warn unused result) checks.
my $gcc_devteam_warn = "-DDEBUG_UNUSED"
        # -DPEDANTIC complements -pedantic and is meant to mask code that
        # is not strictly standard-compliant and/or implementation-specifc,
        # e.g. inline assembly, disregards to alignment requirements, such
        # that -pedantic would complain about. Incidentally -DPEDANTIC has
        # to be used even in sanitized builds, because sanitizer too is
        # supposed to and does take notice of non-standard behaviour. Then
        # -pedantic with pre-C9x compiler would also complain about 'long
        # long' not being supported. As 64-bit algorithms are common now,
        # it grew impossible to resolve this without sizeable additional
        # code, so we just tell compiler to be pedantic about everything
        # but 'long long' type.
        . " -DPEDANTIC -pedantic -Wno-long-long"
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        . " -Wall"
        . " -Wsign-compare"
        . " -Wmissing-prototypes"
        . " -Wshadow"
        . " -Wformat"
        . " -Wtype-limits"
        . " -Werror"
        ;
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# These are used in addition to $gcc_devteam_warn when the compiler is clang.
# TODO(openssl-team): fix problems and investigate if (at least) the
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# following warnings can also be enabled:
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#       -Wswitch-enum
#       -Wcast-align
#       -Wunreachable-code
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#       -Wlanguage-extension-token -- no, we use asm()
#       -Wunused-macros -- no, too tricky for BN and _XOPEN_SOURCE etc
#       -Wextended-offsetof -- no, needed in CMS ASN1 code
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my $clang_devteam_warn = ""
        . " -Qunused-arguments"
        . " -Wextra"
        . " -Wno-unused-parameter"
        . " -Wno-missing-field-initializers"
        . " -Wno-language-extension-token"
        . " -Wno-extended-offsetof"
        . " -Wconditional-uninitialized"
        . " -Wincompatible-pointer-types-discards-qualifiers"
        . " -Wmissing-variable-declarations"
        ;
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# This adds backtrace information to the memory leak info.  Is only used
# when crypto-mdebug-backtrace is enabled.
my $memleak_devteam_backtrace = "-rdynamic";
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my $strict_warnings = 0;

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# As for $BSDthreads. Idea is to maintain "collective" set of flags,
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# which would cover all BSD flavors. -pthread applies to them all,
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# but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
# -lc_r, which is sufficient. FreeBSD 4.x expands it as -lc_r,
# which has to be accompanied by explicit -D_THREAD_SAFE and
# sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
# seems to be sufficient?
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our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
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#
# API compability name to version number mapping.
#
my $maxapi = "1.1.0";           # API for "no-deprecated" builds
my $apitable = {
    "1.1.0" => "0x10100000L",
    "1.0.0" => "0x10000000L",
    "0.9.8" => "0x00908000L",
};

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our %table = ();
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our %config = ();
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our %withargs = ();
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# Forward declarations ###############################################
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# read_config(filename)
#
# Reads a configuration file and populates %table with the contents
# (which the configuration file places in %targets).
sub read_config;
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# resolve_config(target)
#
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# Resolves all the late evalutations, inheritances and so on for the
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# chosen target and any target it inherits from.
sub resolve_config;
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# Information collection #############################################

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# Unified build supports separate build dir
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my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
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my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));

$config{sourcedir} = abs2rel($srcdir);
$config{builddir} = abs2rel($blddir);

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# Collect version numbers
$config{version} = "unknown";
$config{version_num} = "unknown";
$config{shlib_version_number} = "unknown";
$config{shlib_version_history} = "unknown";

collect_information(
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    collect_from_file(catfile($srcdir,'include/openssl/opensslv.h')),
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    qr/OPENSSL.VERSION.TEXT.*OpenSSL (\S+) / => sub { $config{version} = $1; },
    qr/OPENSSL.VERSION.NUMBER.*(0x\S+)/	     => sub { $config{version_num}=$1 },
    qr/SHLIB_VERSION_NUMBER *"([^"]+)"/	     => sub { $config{shlib_version_number}=$1 },
    qr/SHLIB_VERSION_HISTORY *"([^"]*)"/     => sub { $config{shlib_version_history}=$1 }
    );
if ($config{shlib_version_history} ne "") { $config{shlib_version_history} .= ":"; }

($config{major}, $config{minor})
    = ($config{version} =~ /^([0-9]+)\.([0-9\.]+)/);
($config{shlib_major}, $config{shlib_minor})
    = ($config{shlib_version_number} =~ /^([0-9]+)\.([0-9\.]+)/);
die "erroneous version information in opensslv.h: ",
    "$config{major}, $config{minor}, $config{shlib_major}, $config{shlib_minor}\n"
    if ($config{major} eq "" || $config{minor} eq ""
	|| $config{shlib_major} eq "" ||  $config{shlib_minor} eq "");

# Collect target configurations

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my $pattern = catfile(dirname($0), "Configurations", "*.conf");
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foreach (sort glob($pattern) ) {
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    &read_config($_);
}
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print "Configuring OpenSSL version $config{version} (0x$config{version_num})\n";

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$config{prefix}="";
$config{openssldir}="";
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$config{processor}="";
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$config{libdir}="";
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$config{cross_compile_prefix}="";
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$config{fipslibdir}="/usr/local/ssl/fips-2.0/lib/";
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my $nofipscanistercheck=0;
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$config{baseaddr}="0xFB00000";
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my $auto_threads=1;    # enable threads automatically? true by default
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my $default_ranlib;
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$config{fips}=0;

# Top level directories to build
$config{dirs} = [ "crypto", "ssl", "engines", "apps", "test", "tools" ];
# crypto/ subdirectories to build
$config{sdirs} = [
    "objects",
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    "md2", "md4", "md5", "sha", "mdc2", "hmac", "ripemd", "whrlpool", "poly1305", "blake2",
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    "des", "aes", "rc2", "rc4", "rc5", "idea", "bf", "cast", "camellia", "seed", "chacha", "modes",
    "bn", "ec", "rsa", "dsa", "dh", "dso", "engine",
    "buffer", "bio", "stack", "lhash", "rand", "err",
    "evp", "asn1", "pem", "x509", "x509v3", "conf", "txt_db", "pkcs7", "pkcs12", "comp", "ocsp", "ui",
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    "cms", "ts", "srp", "cmac", "ct", "async", "kdf"
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    ];
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# Known TLS and DTLS protocols
my @tls = qw(ssl3 tls1 tls1_1 tls1_2);
my @dtls = qw(dtls1 dtls1_2);

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# Explicitelly known options that are possible to disable.  They can
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# be regexps, and will be used like this: /^no-${option}$/
# For developers: keep it sorted alphabetically

my @disablables = (
    "aes",
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    "afalgeng",
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    "asm",
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    "async",
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    "autoalginit",
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    "autoerrinit",
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    "bf",
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    "blake2",
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    "camellia",
    "capieng",
    "cast",
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    "chacha",
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    "cmac",
    "cms",
    "comp",
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    "crypto-mdebug",
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    "crypto-mdebug-backtrace",
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    "ct",
    "deprecated",
    "des",
    "dgram",
    "dh",
    "dsa",
    "dso",
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    "dtls",
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    "dynamic-engine",
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    "ec",
    "ec2m",
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    "ecdh",
    "ecdsa",
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    "ec_nistp_64_gcc_128",
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    "egd",
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    "engine",
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    "err",
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    "filenames",
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    "gost",
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    "heartbeats",
    "hmac",
    "hw(-.+)?",
    "idea",
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    "makedepend",
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    "md2",
    "md4",
    "md5",
    "mdc2",
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    "multiblock",
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    "nextprotoneg",
    "ocb",
    "ocsp",
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    "pic",
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    "poly1305",
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    "posix-io",
    "psk",
    "rc2",
    "rc4",
    "rc5",
    "rdrand",
    "rfc3779",
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    "ripemd",
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    "rmd160",
    "rsa",
    "scrypt",
    "sct",
    "sctp",
    "seed",
    "sha",
    "shared",
    "sock",
    "srp",
    "srtp",
    "sse2",
    "ssl",
    "ssl-trace",
    "static-engine",
    "stdio",
    "threads",
    "tls",
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    "ts",
    "ui",
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    "unit-test",
    "whirlpool",
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    "weak-ssl-ciphers",
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    "zlib",
    "zlib-dynamic",
    );
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foreach my $proto ((@tls, @dtls))
	{
	push(@disablables, $proto);
	push(@disablables, "$proto-method");
	}
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my @deprecated_disablables = (
    "ssl2",
    );

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# All of the following is disabled by default (RC5 was enabled before 0.9.8):

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our %disabled = ( # "what"         => "comment"
		  "ec_nistp_64_gcc_128" => "default",
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		  "egd"                 => "default",
		  "md2"                 => "default",
		  "rc5"                 => "default",
		  "sctp"                => "default",
		  "shared"              => "default",
		  "ssl-trace"           => "default",
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		  "ssl3"                => "default",
		  "ssl3-method"         => "default",
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		  "unit-test"           => "default",
		  "weak-ssl-ciphers"    => "default",
		  "zlib"                => "default",
		  "zlib-dynamic"        => "default",
		  "crypto-mdebug"       => "default",
		  "heartbeats"          => "default",
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		);
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# Note: => pair form used for aesthetics, not to truly make a hash table
my @disable_cascades = (
    # "what"		=> [ "cascade", ... ]
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    sub { $config{processor} eq "386" }
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			=> [ "sse2" ],
    "ssl"		=> [ "ssl3" ],
    "ssl3-method"	=> [ "ssl3" ],
    "zlib"		=> [ "zlib-dynamic" ],
    "des"		=> [ "mdc2" ],
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    "ec"		=> [ "ecdsa", "ecdh" ],
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    "dgram"		=> [ "dtls", "sctp" ],
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    "sock"		=> [ "sctp" ],
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    "dtls"		=> [ @dtls ],

    # SSL 3.0, (D)TLS 1.0 and TLS 1.1 require MD5 and SHA
    "md5"		=> [ "ssl", "tls1", "tls1_1", "dtls1" ],
    "sha"		=> [ "ssl", "tls1", "tls1_1", "dtls1" ],

    # Additionally, SSL 3.0 requires either RSA or DSA+DH
    sub { $disabled{rsa}
	  && ($disabled{dsa} || $disabled{dh}); }
			=> [ "ssl" ],

    # (D)TLS 1.0 and TLS 1.1 also require either RSA or DSA+DH
    # or ECDSA + ECDH.  (D)TLS 1.2 has this requirement as well.
    # (XXX: We don't support PSK-only builds).
    sub { $disabled{rsa}
	  && ($disabled{dsa} || $disabled{dh})
	  && ($disabled{ecdsa} || $disabled{ecdh}); }
			=> [ "tls1", "tls1_1", "tls1_2",
			     "dtls1", "dtls1_2" ],

    "tls"		=> [ @tls ],

    # SRP and HEARTBEATS require TLSEXT
    "tlsext"		=> [ "srp", "heartbeats" ],
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    "crypto-mdebug"     => [ "crypto-mdebug-backtrace" ],
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    # Without DSO, we can't load dynamic engines, so don't build them dynamic
    "dso"               => [ "dynamic-engine" ],
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    # Without position independent code, there can be no shared libraries or DSOs
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    "pic"               => [ "shared" ],
    "shared"            => [ "dynamic-engine" ],
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    "engine"            => [ "afalgeng" ],
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    "comp"		=> [ "zlib" ],
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    sub { !$disabled{"unit-test"} } => [ "heartbeats" ],
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    );

# Avoid protocol support holes.  Also disable all versions below N, if version
# N is disabled while N+1 is enabled.
#
my @list = (reverse @tls);
while ((my $first, my $second) = (shift @list, shift @list)) {
    last unless @list;
    push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
			      => [ @list ] );
    unshift @list, $second;
}
my @list = (reverse @dtls);
while ((my $first, my $second) = (shift @list, shift @list)) {
    last unless @list;
    push @disable_cascades, ( sub { !$disabled{$first} && $disabled{$second} }
			      => [ @list ] );
    unshift @list, $second;
}

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# Explicit "no-..." options will be collected in %disabled along with the defaults.
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# To remove something from %disabled, use "enable-foo".
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# For symmetry, "disable-foo" is a synonym for "no-foo".

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my @generated_headers = (
    "include/openssl/opensslconf.h",
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    "crypto/include/internal/bn_conf.h",
    "crypto/include/internal/dso_conf.h"
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    );

my @generated_by_make_headers = (
    "crypto/buildinf.h"
    );

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my $no_sse2=0;
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&usage if ($#ARGV < 0);
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my $user_cflags="";
my @user_defines=();
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$config{openssl_api_defines}=[];
$config{openssl_algorithm_defines}=[];
$config{openssl_thread_defines}=[];
$config{openssl_sys_defines}=[];
$config{openssl_other_defines}=[];
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my $libs="";
my $target="";
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$config{options}="";
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$config{build_type} = "release";
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my $classic = 0;

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my @argvcopy=@ARGV;

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if (grep /^reconf(igure)?$/, @argvcopy) {
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    if (-f "./configdata.pm") {
	my $file = "./configdata.pm";
	unless (my $return = do $file) {
	    die "couldn't parse $file: $@" if $@;
            die "couldn't do $file: $!"    unless defined $return;
            die "couldn't run $file"       unless $return;
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	}
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	@argvcopy = defined($configdata::config{perlargv}) ?
	    @{$configdata::config{perlargv}} : ();
	die "Incorrect data to reconfigure, please do a normal configuration\n"
	    if (grep(/^reconf/,@argvcopy));
	$ENV{CROSS_COMPILE} = $configdata::config{cross_compile_prefix}
	    if defined($configdata::config{cross_compile_prefix});
	$ENV{CROSS_COMPILE} = $configdata::config{cc}
	    if defined($configdata::config{cc});

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	print "Reconfiguring with: ", join(" ",@argvcopy), "\n";
	print "    CROSS_COMPILE = ",$ENV{CROSS_COMPILE},"\n"
	    if $ENV{CROSS_COMPILE};
	print "    CC = ",$ENV{CC},"\n" if $ENV{CC};
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    } elsif (open IN, "<Makefile") {
        #
        # THIS SECTION IS TEMPORARY, it helps transitioning from Makefile
        # centered information gathering the reading configdata.pm
        #
        while (<IN>) {
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            s|\R$||;
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            if (/^CONFIGURE_ARGS=\s*(.*)\s*/) {
                # Older form, we split the string and hope for the best
                @argvcopy = split /\s+/, $_;
                die "Incorrect data to reconfigure, please do a normal configuration\n"
                    if (grep(/^reconf/,@argvcopy));
            } elsif (/^CROSS_COMPILE=\s*(.*)/) {
                $ENV{CROSS_COMPILE}=$1;
            } elsif (/^CC=\s*(?:\$\(CROSS_COMPILE\))?(.*?)$/) {
                $ENV{CC}=$1;
            }
        }
        #
        # END OF TEMPORARY SECTION
        #
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    } else {
	die "Insufficient data to reconfigure, please do a normal configuration\n";
    }
}

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$config{perlargv} = [ @argvcopy ];
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my %unsupported_options = ();
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my %deprecated_options = ();
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foreach (@argvcopy)
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	{
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	# VMS is a case insensitive environment, and depending on settings
	# out of our control, we may receive options uppercased.  Let's
	# downcase at least the part before any equal sign.
	if ($^O eq "VMS")
		{
		s/^([^=]*)/lc($1)/e;
		}
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	s /^-no-/no-/; # some people just can't read the instructions
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	# rewrite some options in "enable-..." form
	s /^-?-?shared$/enable-shared/;
	s /^sctp$/enable-sctp/;
	s /^threads$/enable-threads/;
	s /^zlib$/enable-zlib/;
	s /^zlib-dynamic$/enable-zlib-dynamic/;
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        if (/^(no|disable|enable)-(.+)$/)
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		{
		my $word = $2;
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		if (grep { $word =~ /^${_}$/ } @deprecated_disablables)
			{
			$deprecated_options{$_} = 1;
			next;
			}
		elsif (!grep { $word =~ /^${_}$/ } @disablables)
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			{
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			$unsupported_options{$_} = 1;
			next;
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			}
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		}
	if (/^no-(.+)$/ || /^disable-(.+)$/)
		{
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                foreach my $proto ((@tls, @dtls))
                        {
                        if ($1 eq "$proto-method")
                                {
                                $disabled{"$proto"} = "option($proto-method)";
                                last;
                                }
                        }
                if ($1 eq "dtls")
                        {
                        foreach my $proto (@dtls)
                                {
                                $disabled{$proto} = "option(dtls)";
                                }
565
                        $disabled{"dtls"} = "option(dtls)";
566 567 568 569 570 571 572 573 574 575 576 577 578 579 580
                        }
                elsif ($1 eq "ssl")
                        {
                        # Last one of its kind
                        $disabled{"ssl3"} = "option(ssl)";
                        }
                elsif ($1 eq "tls")
                        {
                        # XXX: Tests will fail if all SSL/TLS
                        # protocols are disabled.
                        foreach my $proto (@tls)
                                {
                                $disabled{$proto} = "option(tls)";
                                }
                        }
581 582
                elsif ($1 eq "static-engine")
                        {
583
                        delete $disabled{"dynamic-engine"};
584 585 586
                        }
                elsif ($1 eq "dynamic-engine")
                        {
587
                        $disabled{"dynamic-engine"} = "option";
588
                        }
589 590 591 592
                else
                        {
                        $disabled{$1} = "option";
                        }
593 594
		# No longer an automatic choice
		$auto_threads = 0 if ($1 eq "threads");
595
		}
596
	elsif (/^enable-(.+)$/)
597
		{
598 599
                if ($1 eq "static-engine")
                        {
600
                        $disabled{"dynamic-engine"} = "option";
601 602 603
                        }
                elsif ($1 eq "dynamic-engine")
                        {
604
                        delete $disabled{"dynamic-engine"};
605
                        }
606 607 608 609
                elsif ($1 eq "zlib-dynamic")
                        {
                        delete $disabled{"zlib"};
                        }
610 611
		my $algo = $1;
		delete $disabled{$algo};
612

613 614
		# No longer an automatic choice
		$auto_threads = 0 if ($1 eq "threads");
615 616 617 618 619 620 621
		}
	elsif (/^--strict-warnings$/)
		{
		$strict_warnings = 1;
		}
	elsif (/^--debug$/)
		{
622
		$config{build_type} = "debug";
623 624 625
		}
	elsif (/^--release$/)
		{
626
		$config{build_type} = "release";
627 628
		}
	elsif (/^386$/)
629
		{ $config{processor}=386; }
630 631
	elsif (/^fips$/)
		{
632
		$config{fips}=1;
633 634 635 636 637 638 639 640 641
		}
	elsif (/^rsaref$/)
		{
		# No RSAref support any more since it's not needed.
		# The check for the option is there so scripts aren't
		# broken
		}
	elsif (/^nofipscanistercheck$/)
		{
642
		$config{fips} = 1;
643 644 645 646
		$nofipscanistercheck = 1;
		}
	elsif (/^[-+]/)
		{
647 648 649 650 651
		if (/^--classic$/)
			{
			$classic=1;
			}
		elsif (/^--prefix=(.*)$/)
652
			{
653
			$config{prefix}=$1;
654 655
			die "Directory given with --prefix MUST be absolute\n"
				unless file_name_is_absolute($config{prefix});
656
			}
657
		elsif (/^--api=(.*)$/)
658
			{
659
			$config{api}=$1;
660
			}
661
		elsif (/^--libdir=(.*)$/)
662
			{
663
			$config{libdir}=$1;
664
			}
665
		elsif (/^--openssldir=(.*)$/)
666
			{
667
			$config{openssldir}=$1;
668
			}
669
		elsif (/^--with-zlib-lib=(.*)$/)
670
			{
671
			$withargs{zlib_lib}=$1;
B
Bodo Möller 已提交
672
			}
673
		elsif (/^--with-zlib-include=(.*)$/)
674
			{
675
			$withargs{zlib_include}="-I$1";
676
			}
677
		elsif (/^--with-fipslibdir=(.*)$/)
678
			{
679
			$config{fipslibdir}="$1/";
680
			}
681
		elsif (/^--with-baseaddr=(.*)$/)
682
			{
683
			$config{baseaddr}="$1";
684
			}
685
		elsif (/^--cross-compile-prefix=(.*)$/)
686
			{
687
			$config{cross_compile_prefix}=$1;
688
			}
689
		elsif (/^--config=(.*)$/)
690
			{
691
			read_config $1;
692
			}
693
		elsif (/^-[lL](.*)$/ or /^-Wl,/)
694
			{
695
			$libs.=$_." ";
696
			}
697 698 699 700
		elsif (/^-D(.*)$/)
			{
			push @user_defines, $1;
			}
701 702 703
		else	# common if (/^[-+]/), just pass down...
			{
			$_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
R
Rich Salz 已提交
704
			$user_cflags.=" ".$_;
705 706 707 708 709 710 711 712 713 714
			}
		}
	else
		{
		die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
		$target=$_;
		}
	unless ($_ eq $target || /^no-/ || /^disable-/)
		{
		# "no-..." follows later after implied disactivations
R
Rich Salz 已提交
715
		# have been derived.  (Don't take this too seroiusly,
716 717 718
		# we really only write OPTIONS to the Makefile out of
		# nostalgia.)

719 720
		if ($config{options} eq "")
			{ $config{options} = $_; }
721
		else
722
			{ $config{options} .= " ".$_; }
723
		}
724

725 726
        if (defined($config{api}) && !exists $apitable->{$config{api}}) {
		die "***** Unsupported api compatibility level: $config{api}\n",
727 728
        }

729 730 731 732 733
	if (keys %deprecated_options)
		{
		warn "***** Deprecated options: ",
			join(", ", keys %deprecated_options), "\n";
		}
734 735 736 737 738
	if (keys %unsupported_options)
		{
		die "***** Unsupported options: ",
			join(", ", keys %unsupported_options), "\n";
		}
739
	}
740

741
if ($config{fips})
B
Ben Laurie 已提交
742
	{
743
	delete $disabled{"shared"} if ($disabled{"shared"} =~ /^default/);
744
	}
745 746 747 748
else
	{
	@{$config{dirs}} = grep !/^fips$/, @{$config{dirs}};
	}
749

750 751 752 753 754 755 756
my @tocheckfor = (keys %disabled);
while (@tocheckfor) {
    my %new_tocheckfor = ();
    my @cascade_copy = (@disable_cascades);
    while (@cascade_copy) {
	my ($test, $descendents) = (shift @cascade_copy, shift @cascade_copy);
	if (ref($test) eq "CODE" ? $test->() : defined($disabled{$test})) {
757
	    foreach(grep { !defined($disabled{$_}) } @$descendents) {
R
Richard Levitte 已提交
758
		$new_tocheckfor{$_} = 1; $disabled{$_} = "forced";
759
	    }
760
	}
761 762 763
    }
    @tocheckfor = (keys %new_tocheckfor);
}
B
Ben Laurie 已提交
764

B
Bodo Möller 已提交
765
if ($target eq "TABLE") {
766 767 768 769
    foreach (sort keys %table) {
	print_table_entry($_, "TABLE");
    }
    exit 0;
B
Bodo Möller 已提交
770 771
}

772
if ($target eq "LIST") {
773 774 775 776
    foreach (sort keys %table) {
	print $_,"\n" unless $table{$_}->{template};
    }
    exit 0;
777 778
}

779
if ($target eq "HASH") {
780 781 782 783 784
    print "%table = (\n";
    foreach (sort keys %table) {
	print_table_entry($_, "HASH");
    }
    exit 0;
785 786
}

787
# Backward compatibility?
788
if ($target =~ m/^CygWin32(-.*)$/) {
789
    $target = "Cygwin".$1;
790 791
}

792 793
foreach (sort (keys %disabled))
	{
794
	$config{options} .= " no-$_";
795 796 797 798

	printf "    no-%-12s %-10s", $_, "[$disabled{$_}]";

	if (/^dso$/)
799
		{ }
800
	elsif (/^threads$/)
801
		{ }
802
	elsif (/^shared$/)
803
		{ }
804 805
	elsif (/^pic$/)
		{ }
806
	elsif (/^zlib$/)
807
		{ }
808
	elsif (/^dynamic-engine$/)
D
Dr. Stephen Henson 已提交
809
		{ }
810 811
	elsif (/^makedepend$/)
		{ }
812 813 814 815
	elsif (/^zlib-dynamic$/)
		{ }
	elsif (/^sse2$/)
		{ $no_sse2 = 1; }
816
	elsif (/^engine$/)
R
Rich Salz 已提交
817 818 819 820 821
		{
		@{$config{dirs}} = grep !/^engines$/, @{$config{dirs}};
		@{$config{sdirs}} = grep !/^engine$/, @{$config{sdirs}};
		push @{$config{openssl_other_defines}}, "OPENSSL_NO_ENGINE";
		}
822 823 824
	else
		{
		my ($ALGO, $algo);
825
		($ALGO = $algo = $_) =~ tr/[\-a-z]/[_A-Z]/;
826

827
		if (/^asm$/ || /^err$/ || /^hw$/ || /^hw-/ || /^async$/
828
				|| /^autoalginit/ || /^autoerrinit/)
829
			{
830
			push @{$config{openssl_other_defines}}, "OPENSSL_NO_$ALGO";
831
			print " OPENSSL_NO_$ALGO";
832

833
			if (/^err$/)	{ push @user_defines, "OPENSSL_NO_ERR"; }
834 835 836
			}
		else
			{
837 838
			($ALGO,$algo) = ("RMD160","rmd160") if ($algo eq "ripemd");

839
			push @{$config{openssl_algorithm_defines}}, "OPENSSL_NO_$ALGO";
840 841
			print " OPENSSL_NO_$ALGO";

842
			# fix-up crypto/directory name(s)
843 844 845
			$algo="whrlpool" if $algo eq "whirlpool";
			$algo="ripemd" if $algo eq "rmd160";
			@{$config{sdirs}} = grep { $_ ne $algo} @{$config{sdirs}};
846

847
			print " (skip dir)";
848 849 850 851 852 853
			}
		}

	print "\n";
	}

854 855 856 857 858
print "Configuring for $target\n";

# Support for legacy targets having a name starting with 'debug-'
my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
if ($d) {
859
    $config{build_type} = "debug";
860 861 862 863 864 865

    # If we do not find debug-foo in the table, the target is set to foo.
    if (!$table{$target}) {
	$target = $t;
    }
}
866
$config{target} = $target;
867
my %target = resolve_config($target);
868 869 870

&usage if (!%target || $target{template});

871
%target = ( %{$table{DEFAULTS}}, %target );
872

873
$target{exe_extension}="";
R
Richard Levitte 已提交
874 875
$target{exe_extension}=".exe" if ($config{target} eq "DJGPP"
                                  || $config{target} =~ /^(?:Cygwin|mingw)/);
876
$target{exe_extension}=".pm"  if ($config{target} =~ /vos/);
877

878 879 880 881 882 883 884
($target{shared_extension_simple}=$target{shared_extension})
    =~ s|\.\$\(SHLIB_MAJOR\)\.\$\(SHLIB_MINOR\)||;
$target{dso_extension}=$target{shared_extension_simple};
($target{shared_import_extension}=$target{shared_extension_simple}.".a")
    if ($config{target} =~ /^(?:Cygwin|mingw)/);


885 886
$config{cross_compile_prefix} = $ENV{'CROSS_COMPILE'}
    if $config{cross_compile_prefix} eq "";
887

888
# Allow overriding the names of some tools.  USE WITH CARE
889
$config{perl} =    $ENV{'PERL'}    || ($^O ne "VMS" ? $^X : "perl");
890 891 892 893
$target{cc} =      $ENV{'CC'}      || $target{cc}      || "cc";
$target{ranlib} =  $ENV{'RANLIB'}  || $target{ranlib}  || which("ranlib") || "true";
$target{ar} =      $ENV{'AR'}      || $target{ar}      || "ar";
$target{nm} =      $ENV{'NM'}      || $target{nm}      || "nm";
894

895 896
# For cflags, lflags, plib_lflags, ex_libs and defines, add the debug_
# or release_ attributes.
897
# Do it in such a way that no spurious space is appended (hence the grep).
898 899 900 901
$config{defines} = [];
$config{cflags} = "";
$config{ex_libs} = "";
$config{shared_ldflag} = "";
902

903 904 905 906
# Make sure build_scheme is consistent.
$target{build_scheme} = [ $target{build_scheme} ]
    if ref($target{build_scheme}) ne "ARRAY";

907 908 909 910 911 912 913 914 915
###### TO BE REMOVED WHEN CLASSIC BUILD IS REMOVED
######
###### If the user has chosen --classic, we give it to them.
###### If they try that with an out-of-source config, we complain.
if ($target{build_scheme}->[0] eq "unified" && $classic) {
    die "Can't perform a classic build out of source tree\n"
        if $srcdir ne $blddir;

    $target{build_scheme} = { unix    => [ "unixmake" ],
R
Richard Levitte 已提交
916
                              windows => undef,
917 918 919 920 921 922
                              VMS     => undef } -> {$target{build_scheme}->[1]};

    die "Classic mode unavailable on this platform\n"
        unless defined($target{build_scheme});
}

923 924 925
my ($builder, $builder_platform, @builder_opts) =
    @{$target{build_scheme}};

926 927
push @{$config{defines}}, "NDEBUG"    if $config{build_type} eq "release";

928
if ($target =~ /^mingw/ && `$target{cc} --target-help 2>&1` =~ m/-mno-cygwin/m)
929
	{
930
	$config{cflags} .= " -mno-cygwin";
931
	$config{shared_ldflag} .= " -mno-cygwin";
932 933
	}

934
if ($target =~ /linux.*-mips/ && !$disabled{asm} && $user_cflags !~ /-m(ips|arch=)/) {
A
Andy Polyakov 已提交
935
	# minimally required architecture flags for assembly modules
936 937
	$config{cflags}="-mips2 $config{cflags}" if ($target =~ /mips32/);
	$config{cflags}="-mips3 $config{cflags}" if ($target =~ /mips64/);
A
Andy Polyakov 已提交
938 939
}

940
my $no_shared_warn=0;
941
my $no_user_cflags=0;
942
my $no_user_defines=0;
943

944 945 946 947 948 949
# The DSO code currently always implements all functions so that no
# applications will have to worry about that from a compilation point
# of view. However, the "method"s may return zero unless that platform
# has support compiled in for them. Currently each method is enabled
# by a define "DSO_<name>" ... we translate the "dso_scheme" config
# string entry into using the following logic;
950
if (!$disabled{dso} && $target{dso_scheme} ne "")
951
	{
952 953
	$target{dso_scheme} =~ tr/[a-z]/[A-Z]/;
	if ($target{dso_scheme} eq "DLFCN")
954
		{
955
		unshift @{$config{defines}}, "DSO_DLFCN", "HAVE_DLFCN_H";
956
		}
957
	elsif ($target{dso_scheme} eq "DLFCN_NO_H")
958
		{
959
		unshift @{$config{defines}}, "DSO_DLFCN";
960 961 962
		}
	else
		{
963
		unshift @{$config{defines}}, "DSO_$target{dso_scheme}";
964 965
		}
	}
966

967
$config{ex_libs}="$libs$config{ex_libs}" if ($libs ne "");
968

969
if ($disabled{asm})
970
	{
971 972 973 974 975
	if ($config{fips})
		{
		@{$config{defines}} = grep !/^[BL]_ENDIAN$/, @{$config{defines}};
		@{$target{defines}} = grep !/^[BL]_ENDIAN$/, @{$target{defines}};
		}
976
	}
977

978 979 980 981 982 983 984 985
# If threads aren't disabled, check how possible they are
unless ($disabled{threads}) {
    if ($auto_threads) {
        # Enabled by default, disable it forcibly if unavailable
        if ($target{thread_scheme} eq "(unknown)") {
            $disabled{threads} = "unavailable";
        }
    } else {
R
Rich Salz 已提交
986
        # The user chose to enable threads explicitely, let's see
987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008
        # if there's a chance that's possible
        if ($target{thread_scheme} eq "(unknown)") {
            # If the user asked for "threads" and we don't have internal
            # knowledge how to do it, [s]he is expected to provide any
            # system-dependent compiler options that are necessary.  We
            # can't truly check that the given options are correct, but
            # we expect the user to know what [s]He is doing.
            if ($no_user_cflags && $no_user_defines) {
                die "You asked for multi-threading support, but didn't\n"
                    ,"provide any system-specific compiler options\n";
            }
        }
    }
}

# If threads still aren't disabled, add a C macro to ensure the source
# code knows about it.  Any other flag is taken care of by the configs.
unless($disabled{threads}) {
    foreach (("defines", "openssl_thread_defines")) {
        push @{$config{$_}}, "OPENSSL_THREADS";
    }
}
1009

1010 1011
# With "deprecated" disable all deprecated features.
if (defined($disabled{"deprecated"})) {
1012
        $config{api} = $maxapi;
1013
}
1014

1015
if ($target{shared_target} eq "")
1016
	{
1017
	$no_shared_warn = 1
1018
	    if ((!$disabled{shared} || !$disabled{"dynamic-engine"})
1019
		&& !$config{fips});
1020
	$disabled{shared} = "no-shared-target";
1021 1022
	$disabled{pic} = $disabled{shared} = $disabled{"dynamic-engine"} =
	    "no-shared-target";
1023
	}
1024

1025
if ($disabled{"dynamic-engine"}) {
1026 1027
        push @{$config{defines}}, "OPENSSL_NO_DYNAMIC_ENGINE";
        $config{dynamic_engines} = 0;
1028 1029 1030
} else {
        push @{$config{defines}}, "OPENSSL_NO_STATIC_ENGINE";
        $config{dynamic_engines} = 1;
1031
}
1032

1033 1034 1035
#
# Platform fix-ups
#
1036 1037 1038 1039 1040 1041 1042

# This saves the build files from having to check
if ($disabled{pic})
	{
	$target{shared_cflag} = $target{shared_ldflag} =
		$target{shared_rcflag} = "";
	}
R
Richard Levitte 已提交
1043 1044 1045 1046
else
	{
	push @{$config{defines}}, "OPENSSL_PIC";
	}
1047

1048
if ($target{sys_id} ne "")
1049
	{
1050
	push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
1051 1052
	}

1053
unless ($disabled{asm}) {
1054
    $target{cpuid_asm_src}=$table{DEFAULTS}->{cpuid_asm_src} if ($config{processor} eq "386");
1055
    $target{bn_asm_src} =~ s/\w+-gf2m.c// if (defined($disabled{ec2m}));
1056

1057
    # bn-586 is the only one implementing bn_*_part_words
1058 1059
    push @{$config{defines}}, "OPENSSL_BN_ASM_PART_WORDS" if ($target{bn_asm_src} =~ /bn-586/);
    push @{$config{defines}}, "OPENSSL_IA32_SSE2" if (!$no_sse2 && $target{bn_asm_src} =~ /86/);
1060

1061 1062 1063
    push @{$config{defines}}, "OPENSSL_BN_ASM_MONT" if ($target{bn_asm_src} =~ /-mont/);
    push @{$config{defines}}, "OPENSSL_BN_ASM_MONT5" if ($target{bn_asm_src} =~ /-mont5/);
    push @{$config{defines}}, "OPENSSL_BN_ASM_GF2m" if ($target{bn_asm_src} =~ /-gf2m/);
1064

1065
    if ($config{fips}) {
1066
	push @{$config{openssl_other_defines}}, "OPENSSL_FIPS";
1067
    }
1068

1069
    if ($target{sha1_asm_src}) {
1070 1071 1072
	push @{$config{defines}}, "SHA1_ASM"   if ($target{sha1_asm_src} =~ /sx86/ || $target{sha1_asm_src} =~ /sha1/);
	push @{$config{defines}}, "SHA256_ASM" if ($target{sha1_asm_src} =~ /sha256/);
	push @{$config{defines}}, "SHA512_ASM" if ($target{sha1_asm_src} =~ /sha512/);
1073
    }
1074
    if ($target{md5_asm_src}) {
1075
	push @{$config{defines}}, "MD5_ASM";
1076
    }
1077
    $target{cast_asm_src}=$table{DEFAULTS}->{cast_asm_src} unless $disabled{pic}; # CAST assembler is not PIC
1078
    if ($target{rmd160_asm_src}) {
1079
	push @{$config{defines}}, "RMD160_ASM";
1080
    }
1081
    if ($target{aes_asm_src}) {
1082
	push @{$config{defines}}, "AES_ASM" if ($target{aes_asm_src} =~ m/\baes-/);;
1083
	# aes-ctr.fake is not a real file, only indication that assembler
1084
	# module implements AES_ctr32_encrypt...
1085
	push @{$config{defines}}, "AES_CTR_ASM" if ($target{aes_asm_src} =~ s/\s*aes-ctr\.fake//);
1086
	# aes-xts.fake indicates presence of AES_xts_[en|de]crypt...
1087
	push @{$config{defines}}, "AES_XTS_ASM" if ($target{aes_asm_src} =~ s/\s*aes-xts\.fake//);
1088
	$target{aes_asm_src} =~ s/\s*(vpaes|aesni)-x86\.s//g if ($no_sse2);
1089 1090
	push @{$config{defines}}, "VPAES_ASM" if ($target{aes_asm_src} =~ m/vpaes/);
	push @{$config{defines}}, "BSAES_ASM" if ($target{aes_asm_src} =~ m/bsaes/);
1091
    }
1092
    if ($target{wp_asm_src} =~ /mmx/) {
1093
        if ($config{processor} eq "386") {
1094
	    $target{wp_asm_src}=$table{DEFAULTS}->{wp_asm_src};
1095
	} elsif (!$disabled{"whirlpool"}) {
1096
	    push @{$config{defines}}, "WHIRLPOOL_ASM";
1097
	}
1098
    }
1099
    if ($target{modes_asm_src} =~ /ghash-/) {
1100
	push @{$config{defines}}, "GHASH_ASM";
1101
    }
1102
    if ($target{ec_asm_src} =~ /ecp_nistz256/) {
1103
	push @{$config{defines}}, "ECP_NISTZ256_ASM";
1104
    }
1105
    if ($target{poly1305_asm_src} ne "") {
1106
	push @{$config{defines}}, "POLY1305_ASM";
1107 1108
    }
}
1109

1110
my $ecc = $target{cc};
1111
if ($^O ne "VMS" && !$disabled{makedepend}) {
1112 1113 1114
    # Is the compiler gcc or clang?  $ecc is used below to see if
    # error-checking can be turned on.
    my $ccpcc = "$config{cross_compile_prefix}$target{cc}";
1115 1116
    open(PIPE, "$ccpcc --version 2>&1 |");
    my $lines = 2;
1117
    while ( <PIPE> ) {
1118 1119
        # Find the version number and save the major.
        m|(?:.*)\b(\d+)\.\d+\.\d+\b(?:.*)|;
1120
        my $compiler_major = $1;
1121 1122
        # We know that GNU C version 3 and up as well as all clang
        # versions support dependency generation
1123
        $config{makedepprog} = $ccpcc
1124
            if (/clang/ || (/gcc/ && $compiler_major > 3));
1125 1126
        $ecc = "clang" if /clang/;
        $ecc = "gcc" if /gcc/;
1127
        last if ($config{makedepprog} || !$lines--);
1128 1129
    }
    close(PIPE);
1130

1131
    $config{makedepprog} = which('makedepend') unless $config{makedepprog};
1132
    $disabled{makedepend} = "unavailable" unless $config{makedepprog};
R
Rich Salz 已提交
1133
}
1134

1135

1136

1137 1138 1139 1140 1141 1142
# Deal with bn_ops ###################################################

$config{bn_ll}			=0;
$config{export_var_as_fn}	=0;
my $def_int="unsigned int";
$config{rc4_int}		=$def_int;
R
Rich Salz 已提交
1143
($config{b64l},$config{b64},$config{b32})=(0,0,1);
1144

R
Rich Salz 已提交
1145
my $count = 0;
1146
foreach (sort split(/\s+/,$target{bn_ops})) {
R
Rich Salz 已提交
1147 1148 1149 1150 1151 1152 1153 1154 1155 1156
    $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
    $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
    $config{bn_ll}=1				if $_ eq 'BN_LLONG';
    $config{rc4_int}="unsigned char"		if $_ eq 'RC4_CHAR';
    ($config{b64l},$config{b64},$config{b32})
	=(0,1,0)				if $_ eq 'SIXTY_FOUR_BIT';
    ($config{b64l},$config{b64},$config{b32})
	=(1,0,0)				if $_ eq 'SIXTY_FOUR_BIT_LONG';
    ($config{b64l},$config{b64},$config{b32})
	=(0,0,1)				if $_ eq 'THIRTY_TWO_BIT';
1157
}
R
Rich Salz 已提交
1158 1159
die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
    if $count > 1;
1160 1161 1162 1163


# Hack cflags for better warnings (dev option) #######################

1164 1165
# "Stringify" the C flags string.  This permits it to be made part of a string
# and works as well on command lines.
R
Richard Levitte 已提交
1166
$config{cflags} =~ s/([\\\"])/\\$1/g;
1167

1168 1169
if (defined($config{api})) {
    $config{openssl_api_defines} = [ "OPENSSL_MIN_API=".$apitable->{$config{api}} ];
1170 1171
    my $apiflag = sprintf("OPENSSL_API_COMPAT=%s", $apitable->{$config{api}});
    push @{$config{defines}}, $apiflag;
1172 1173
}

1174 1175 1176
if ($strict_warnings)
	{
	my $wopt;
R
Rich Salz 已提交
1177 1178
	die "ERROR --strict-warnings requires gcc or clang"
            unless $ecc eq 'gcc' || $ecc eq 'clang';
1179 1180
	foreach $wopt (split /\s+/, $gcc_devteam_warn)
		{
1181
		$config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1182
		}
B
Ben Laurie 已提交
1183 1184 1185 1186
	if ($ecc eq "clang")
		{
		foreach $wopt (split /\s+/, $clang_devteam_warn)
			{
1187
			$config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
B
Ben Laurie 已提交
1188 1189
			}
		}
1190 1191 1192 1193 1194
	}

unless ($disabled{"crypto-mdebug-backtrace"})
	{
	foreach my $wopt (split /\s+/, $memleak_devteam_backtrace)
1195
		{
1196
		$config{cflags} .= " $wopt" unless ($config{cflags} =~ /(?:^|\s)$wopt(?:\s|$)/)
1197 1198 1199 1200
		}
	if ($target =~ /^BSD-/)
		{
		$config{ex_libs} .= " -lexecinfo";
1201
		}
1202 1203
	}

1204 1205 1206 1207 1208 1209 1210
if ($user_cflags ne "") { $config{cflags}="$config{cflags}$user_cflags"; }
else                    { $no_user_cflags=1;  }
if (@user_defines) { $config{defines}=[ @{$config{defines}}, @user_defines ]; }
else               { $no_user_defines=1;    }

# ALL MODIFICATIONS TO %config and %target MUST BE DONE FROM HERE ON

1211 1212
unless ($disabled{afalgeng}) {
    $config{afalgeng}="";
1213 1214 1215 1216 1217 1218 1219 1220
    if ($target =~ m/^linux/) {
        my $minver = 4*10000 + 1*100 + 0;
        if ($config{cross_compile_prefix} eq "") {
            my $verstr = `uname -r`;
            my ($ma, $mi1, $mi2) = split("\\.", $verstr);
            ($mi2) = $mi2 =~ /(\d+)/;
            my $ver = $ma*10000 + $mi1*100 + $mi2;
            if ($ver < $minver) {
1221
                $disabled{afalgeng} = "too-old-kernel";
1222 1223 1224
            } else {
                push @{$config{engdirs}}, "afalg";
            }
1225 1226
        } else {
            $disabled{afalgeng} = "cross-compiling";
C
clucey 已提交
1227
        }
1228
    } else {
1229
        $disabled{afalgeng}  = "not-linux";
C
clucey 已提交
1230 1231
    }
}
M
Matt Caswell 已提交
1232

1233
push @{$config{openssl_other_defines}}, "OPENSSL_NO_AFALGENG" if ($disabled{afalgeng});
C
clucey 已提交
1234

1235 1236 1237
# If we use the unified build, collect information from build.info files
my %unified_info = ();

1238
my $buildinfo_debug = defined($ENV{CONFIGURE_DEBUG_BUILDINFO});
1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
if ($builder eq "unified") {
    # Store the name of the template file we will build the build file from
    # in %config.  This may be useful for the build file itself.
    my $build_file_template =
        catfile($srcdir, "Configurations",
                $builder_platform."-".$target{build_file}.".tmpl");
    $build_file_template =
        catfile($srcdir, "Configurations", $target{build_file}.".tmpl")
        if (! -f $build_file_template);
    $config{build_file_template} = $build_file_template;

1250 1251 1252 1253
    use lib catdir(dirname(__FILE__),"util");
    use with_fallback qw(Text::Template);

    sub cleandir {
1254
        my $base = shift;
1255
        my $dir = shift;
1256 1257 1258
        my $relativeto = shift || ".";

        $dir = catdir($base,$dir) unless isabsolute($dir);
1259

1260 1261 1262
        # Make sure the directories we're building in exists
        mkpath($dir);

1263
        my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
1264 1265 1266 1267 1268
        #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
        return $res;
    }

    sub cleanfile {
1269
        my $base = shift;
1270
        my $file = shift;
1271 1272 1273 1274
        my $relativeto = shift || ".";

        $file = catfile($base,$file) unless isabsolute($file);

1275 1276 1277
        my $d = dirname($file);
        my $f = basename($file);

1278 1279 1280
        # Make sure the directories we're building in exists
        mkpath($d);

1281
        my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299
        #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
        return $res;
    }

    my @build_infos = ( [ ".", "build.info" ] );
    foreach (@{$config{dirs}}) {
        push @build_infos, [ $_, "build.info" ]
            if (-f catfile($srcdir, $_, "build.info"));
    }
    foreach (@{$config{sdirs}}) {
        push @build_infos, [ catdir("crypto", $_), "build.info" ]
            if (-f catfile($srcdir, "crypto", $_, "build.info"));
    }
    foreach (@{$config{engdirs}}) {
        push @build_infos, [ catdir("engines", $_), "build.info" ]
            if (-f catfile($srcdir, "engines", $_, "build.info"));
    }

1300 1301
    $config{build_infos} = [ ];

1302 1303 1304 1305
    foreach (@build_infos) {
        my $sourced = catdir($srcdir, $_->[0]);
        my $buildd = catdir($blddir, $_->[0]);

1306
        mkpath($buildd);
1307 1308 1309 1310 1311 1312 1313 1314

        my $f = $_->[1];
        # The basic things we're trying to build
        my @programs = ();
        my @libraries = ();
        my @engines = ();
        my @scripts = ();
        my @extra = ();
1315
        my @overrides = ();
1316 1317 1318 1319 1320
        my @intermediates = ();
        my @rawlines = ();

        my %ordinals = ();
        my %sources = ();
1321
        my %shared_sources = ();
1322 1323 1324 1325
        my %includes = ();
        my %depends = ();
        my %renames = ();
        my %sharednames = ();
1326
        my %generate = ();
1327

1328
        push @{$config{build_infos}}, catfile(abs2rel($sourced, $blddir), $f);
1329 1330 1331 1332 1333 1334 1335
        my $template = Text::Template->new(TYPE => 'FILE',
                                           SOURCE => catfile($sourced, $f));
        die "Something went wrong with $sourced/$f: $!\n" unless $template;
        my @text =
            split /^/m,
            $template->fill_in(HASH => { config => \%config,
                                         target => \%target,
1336
                                         disabled => \%disabled,
1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355
                                         builddir => abs2rel($buildd, $blddir),
                                         sourcedir => abs2rel($sourced, $blddir),
                                         buildtop => abs2rel($blddir, $blddir),
                                         sourcetop => abs2rel($srcdir, $blddir) },
                               DELIMITERS => [ "{-", "-}" ]);

        # The top item of this stack has the following values
        # -2 positive already run and we found ELSE (following ELSIF should fail)
        # -1 positive already run (skip until ENDIF)
        # 0 negatives so far (if we're at a condition, check it)
        # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
        # 2 positive ELSE (following ELSIF should fail)
        my @skip = ();
        collect_information(
            collect_from_array([ @text ],
                               qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
                                                $l1 =~ s/\\$//; $l1.$l2 }),
            # Info we're looking for
            qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
1356
            => sub {
1357
                if (! @skip || $skip[$#skip] > 0) {
1358 1359 1360 1361 1362
                    push @skip, !! $1;
                } else {
                    push @skip, -1;
                }
            },
1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390
            qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
            => sub { die "ELSIF out of scope" if ! @skip;
                     die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
                     $skip[$#skip] = -1 if $skip[$#skip] != 0;
                     $skip[$#skip] = !! $1
                         if $skip[$#skip] == 0; },
            qr/^\s*ELSE\s*$/
            => sub { die "ELSE out of scope" if ! @skip;
                     $skip[$#skip] = -2 if $skip[$#skip] != 0;
                     $skip[$#skip] = 2 if $skip[$#skip] == 0; },
            qr/^\s*ENDIF\s*$/
            => sub { die "ENDIF out of scope" if ! @skip;
                     pop @skip; },
            qr/^\s*PROGRAMS\s*=\s*(.*)\s*$/
            => sub { push @programs, split(/\s+/, $1)
                         if !@skip || $skip[$#skip] > 0 },
            qr/^\s*LIBS\s*=\s*(.*)\s*$/
            => sub { push @libraries, split(/\s+/, $1)
                         if !@skip || $skip[$#skip] > 0 },
            qr/^\s*ENGINES\s*=\s*(.*)\s*$/
            => sub { push @engines, split(/\s+/, $1)
                         if !@skip || $skip[$#skip] > 0 },
            qr/^\s*SCRIPTS\s*=\s*(.*)\s*$/
            => sub { push @scripts, split(/\s+/, $1)
                         if !@skip || $skip[$#skip] > 0 },
            qr/^\s*EXTRA\s*=\s*(.*)\s*$/
            => sub { push @extra, split(/\s+/, $1)
                         if !@skip || $skip[$#skip] > 0 },
1391 1392 1393
            qr/^\s*OVERRIDES\s*=\s*(.*)\s*$/
            => sub { push @overrides, split(/\s+/, $1)
                         if !@skip || $skip[$#skip] > 0 },
1394 1395 1396 1397 1398 1399 1400

            qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
            => sub { push @{$ordinals{$1}}, split(/\s+/, $2)
                         if !@skip || $skip[$#skip] > 0 },
            qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
            => sub { push @{$sources{$1}}, split(/\s+/, $2)
                         if !@skip || $skip[$#skip] > 0 },
1401 1402 1403
            qr/^\s*SHARED_SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
            => sub { push @{$shared_sources{$1}}, split(/\s+/, $2)
                         if !@skip || $skip[$#skip] > 0 },
1404 1405 1406 1407 1408 1409
            qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
            => sub { push @{$includes{$1}}, split(/\s+/, $2)
                         if !@skip || $skip[$#skip] > 0 },
            qr/^\s*DEPEND\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
            => sub { push @{$depends{$1}}, split(/\s+/, $2)
                         if !@skip || $skip[$#skip] > 0 },
1410 1411 1412
            qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
            => sub { push @{$generate{$1}}, $2
                         if !@skip || $skip[$#skip] > 0 },
1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423
            qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
            => sub { push @{$renames{$1}}, split(/\s+/, $2)
                         if !@skip || $skip[$#skip] > 0 },
            qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
            => sub { push @{$sharednames{$1}}, split(/\s+/, $2)
                         if !@skip || $skip[$#skip] > 0 },
            qr/^\s*BEGINRAW\[((?:\\.|[^\\\]])+)\]\s*$/
            => sub {
                my $lineiterator = shift;
                my $target_kind = $1;
                while (defined $lineiterator->()) {
R
Richard Levitte 已提交
1424
                    s|\R$||;
1425 1426 1427 1428 1429 1430 1431 1432
                    if (/^\s*ENDRAW\[((?:\\.|[^\\\]])+)\]\s*$/) {
                        die "ENDRAW doesn't match BEGINRAW"
                            if $1 ne $target_kind;
                        last;
                    }
                    next if @skip && $skip[$#skip] <= 0;
                    push @rawlines,  $_
                        if ($target_kind eq $target{build_file}
1433
                            || $target_kind eq $target{build_file}."(".$builder_platform.")");
1434 1435 1436
                }
            },
            qr/^(?:#.*|\s*)$/ => sub { },
1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448
            "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
            "BEFORE" => sub {
                if ($buildinfo_debug) {
                    print STDERR "DEBUG: Parsing ",join(" ", @_),"\n";
                    print STDERR "DEBUG: ... before parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
                }
            },
            "AFTER" => sub {
                if ($buildinfo_debug) {
                    print STDERR "DEBUG: .... after parsing, skip stack is ",join(" ", map { int($_) } @skip),"\n";
                }
            },
1449 1450 1451 1452 1453 1454 1455
            );
        die "runaway IF?" if (@skip);

        foreach (keys %renames) {
            die "$_ renamed to more than one thing: "
                ,join(" ", @{$renames{$_}}),"\n"
                if scalar @{$renames{$_}} > 1;
1456 1457
            my $dest = cleanfile($buildd, $_, $blddir);
            my $to = cleanfile($buildd, $renames{$_}->[0], $blddir);
1458 1459 1460 1461 1462 1463 1464 1465
            die "$dest renamed to more than one thing: "
                ,$unified_info{rename}->{$dest}, $to
                unless !defined($unified_info{rename}->{$dest})
                or $unified_info{rename}->{$dest} eq $to;
            $unified_info{rename}->{$dest} = $to;
        }

        foreach (@programs) {
1466
            my $program = cleanfile($buildd, $_, $blddir);
1467 1468 1469 1470 1471 1472 1473
            if ($unified_info{rename}->{$program}) {
                $program = $unified_info{rename}->{$program};
            }
            $unified_info{programs}->{$program} = 1;
        }

        foreach (@libraries) {
1474
            my $library = cleanfile($buildd, $_, $blddir);
1475 1476 1477 1478 1479 1480
            if ($unified_info{rename}->{$library}) {
                $library = $unified_info{rename}->{$library};
            }
            $unified_info{libraries}->{$library} = 1;
        }

1481
        die <<"EOF" if scalar @engines and !$config{dynamic_engines};
1482
ENGINES can only be used if configured with 'dynamic-engine'.
1483 1484 1485
This is usually a fault in a build.info file.
EOF
        foreach (@engines) {
1486
            my $library = cleanfile($buildd, $_, $blddir);
1487 1488 1489 1490 1491 1492 1493
            if ($unified_info{rename}->{$library}) {
                $library = $unified_info{rename}->{$library};
            }
            $unified_info{engines}->{$library} = 1;
        }

        foreach (@scripts) {
1494
            my $script = cleanfile($buildd, $_, $blddir);
1495 1496 1497 1498 1499 1500 1501
            if ($unified_info{rename}->{$script}) {
                $script = $unified_info{rename}->{$script};
            }
            $unified_info{scripts}->{$script} = 1;
        }

        foreach (@extra) {
1502
            my $extra = cleanfile($buildd, $_, $blddir);
1503 1504 1505
            $unified_info{extra}->{$extra} = 1;
        }

1506 1507 1508 1509 1510
        foreach (@overrides) {
            my $override = cleanfile($buildd, $_, $blddir);
            $unified_info{overrides}->{$override} = 1;
        }

1511 1512
        push @{$unified_info{rawlines}}, @rawlines;

1513
        unless ($disabled{shared}) {
1514 1515
            # Check sharednames.
            foreach (keys %sharednames) {
1516
                my $dest = cleanfile($buildd, $_, $blddir);
1517 1518 1519 1520 1521 1522
                if ($unified_info{rename}->{$dest}) {
                    $dest = $unified_info{rename}->{$dest};
                }
                die "shared_name for $dest with multiple values: "
                    ,join(" ", @{$sharednames{$_}}),"\n"
                    if scalar @{$sharednames{$_}} > 1;
1523
                my $to = cleanfile($buildd, $sharednames{$_}->[0], $blddir);
1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543
                die "shared_name found for a library $dest that isn't defined\n"
                    unless $unified_info{libraries}->{$dest};
                die "shared_name for $dest with multiple values: "
                    ,$unified_info{sharednames}->{$dest}, ", ", $to
                    unless !defined($unified_info{sharednames}->{$dest})
                    or $unified_info{sharednames}->{$dest} eq $to;
                $unified_info{sharednames}->{$dest} = $to;
            }

            # Additionally, we set up sharednames for libraries that don't
            # have any, as themselves.
            foreach (keys %{$unified_info{libraries}}) {
                if (!defined $unified_info{sharednames}->{$_}) {
                    $unified_info{sharednames}->{$_} = $_
                }
            }
        }

        foreach (keys %ordinals) {
            my $dest = $_;
1544
            my $ddest = cleanfile($buildd, $_, $blddir);
1545 1546 1547 1548 1549 1550 1551
            if ($unified_info{rename}->{$ddest}) {
                $ddest = $unified_info{rename}->{$ddest};
            }
            foreach (@{$ordinals{$dest}}) {
                my %known_ordinals =
                    (
                     crypto =>
1552
                     cleanfile($sourced, catfile("util", "libcrypto.num"), $blddir),
1553
                     ssl =>
1554
                     cleanfile($sourced, catfile("util", "libssl.num"), $blddir)
1555 1556 1557 1558 1559 1560 1561 1562 1563 1564
                    );
                my $o = $known_ordinals{$_};
                die "Ordinals for $ddest defined more than once\n"
                    if $unified_info{ordinals}->{$ddest};
                $unified_info{ordinals}->{$ddest} = [ $_, $o ];
            }
        }

        foreach (keys %sources) {
            my $dest = $_;
1565
            my $ddest = cleanfile($buildd, $_, $blddir);
1566 1567 1568 1569
            if ($unified_info{rename}->{$ddest}) {
                $ddest = $unified_info{rename}->{$ddest};
            }
            foreach (@{$sources{$dest}}) {
1570
                my $s = cleanfile($sourced, $_, $blddir);
1571 1572 1573 1574

                # If it isn't in the source tree, we assume it's generated
                # in the build tree
                if (! -f $s) {
1575
                    $s = cleanfile($buildd, $_, $blddir);
1576 1577 1578 1579
                }
                # We recognise C and asm files
                if ($s =~ /\.[csS]\b$/) {
                    (my $o = $_) =~ s/\.[csS]\b$/.o/;
1580
                    $o = cleanfile($buildd, $o, $blddir);
1581 1582 1583 1584 1585 1586 1587 1588
                    $unified_info{sources}->{$ddest}->{$o} = 1;
                    $unified_info{sources}->{$o}->{$s} = 1;
                } else {
                    $unified_info{sources}->{$ddest}->{$s} = 1;
                }
            }
        }

1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614
        foreach (keys %shared_sources) {
            my $dest = $_;
            my $ddest = cleanfile($buildd, $_, $blddir);
            if ($unified_info{rename}->{$ddest}) {
                $ddest = $unified_info{rename}->{$ddest};
            }
            foreach (@{$shared_sources{$dest}}) {
                my $s = cleanfile($sourced, $_, $blddir);

                # If it isn't in the source tree, we assume it's generated
                # in the build tree
                if (! -f $s) {
                    $s = cleanfile($buildd, $_, $blddir);
                }
                # We recognise C and asm files
                if ($s =~ /\.[csS]\b$/) {
                    (my $o = $_) =~ s/\.[csS]\b$/.o/;
                    $o = cleanfile($buildd, $o, $blddir);
                    $unified_info{shared_sources}->{$ddest}->{$o} = 1;
                    $unified_info{sources}->{$o}->{$s} = 1;
                } else {
                    die "unrecognised source file type for shared library: $s\n";
                }
            }
        }

1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628
        foreach (keys %generate) {
            my $dest = $_;
            my $ddest = cleanfile($buildd, $_, $blddir);
            if ($unified_info{rename}->{$ddest}) {
                $ddest = $unified_info{rename}->{$ddest};
            }
            die "more than one generator for $dest: "
                    ,join(" ", @{$generate{$_}}),"\n"
                    if scalar @{$generate{$_}} > 1;
            my @generator = split /\s+/, $generate{$dest}->[0];
            $generator[0] = cleanfile($sourced, $generator[0], $blddir),
            $unified_info{generate}->{$ddest} = [ @generator ];
        }

1629 1630
        foreach (keys %depends) {
            my $dest = $_;
1631
            my $ddest = cleanfile($buildd, $_, $blddir);
1632 1633 1634 1635
            if ($unified_info{rename}->{$ddest}) {
                $ddest = $unified_info{rename}->{$ddest};
            }
            foreach (@{$depends{$dest}}) {
1636
                my $d = cleanfile($sourced, $_, $blddir);
1637

1638 1639 1640 1641 1642 1643
                # If we know it's generated, or assume it is because we can't
                # find it in the source tree, we set file we depend on to be
                # in the build tree rather than the source tree, and assume
                # and that there are lines to build it in a BEGINRAW..ENDRAW
                # section or in the Makefile template.
                if (! -f $d
1644 1645 1646
                    || (grep { $d eq $_ }
                        map { cleanfile($srcdir, $_, $blddir) }
                        (@generated_headers, @generated_by_make_headers))) {
1647
                    $d = cleanfile($buildd, $_, $blddir);
1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665
                }
                # Take note if the file to depend on is being renamed
                if ($unified_info{rename}->{$d}) {
                    $d = $unified_info{rename}->{$d};
                }
                $unified_info{depends}->{$ddest}->{$d} = 1;
                # If we depend on a header file, let's make sure it
                # can get included
                if ($d =~ /\.h$/) {
                    my $i = dirname($d);
                    push @{$unified_info{includes}->{$ddest}}, $i
                        unless grep { $_ eq $i } @{$unified_info{includes}->{$ddest}};
                }
            }
        }

        foreach (keys %includes) {
            my $dest = $_;
1666
            my $ddest = cleanfile($buildd, $_, $blddir);
1667 1668 1669 1670
            if ($unified_info{rename}->{$ddest}) {
                $ddest = $unified_info{rename}->{$ddest};
            }
            foreach (@{$includes{$dest}}) {
1671
                my $i = cleandir($sourced, $_, $blddir);
1672 1673 1674 1675 1676 1677 1678 1679
                push @{$unified_info{includes}->{$ddest}}, $i
                    unless grep { $_ eq $i } @{$unified_info{includes}->{$ddest}};
            }
        }
    }

    ### Make unified_info a bit more efficient
    # One level structures
1680
    foreach (("programs", "libraries", "engines", "scripts", "extra", "overrides")) {
1681 1682 1683
        $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
    }
    # Two level structures
1684
    foreach my $l1 (("sources", "shared_sources", "ldadd", "depends")) {
1685 1686 1687 1688 1689 1690 1691 1692 1693
        foreach my $l2 (sort keys %{$unified_info{$l1}}) {
            $unified_info{$l1}->{$l2} =
                [ sort keys %{$unified_info{$l1}->{$l2}} ];
        }
    }
}

# For the schemes that need it, we provide the old *_obj configs
# from the *_asm_obj ones
1694
foreach (grep /_(asm|aux)_src$/, keys %target) {
1695
    my $src = $_;
1696
    (my $obj = $_) =~ s/_(asm|aux)_src$/_obj/;
1697 1698 1699
    ($target{$obj} = $target{$src}) =~ s/\.[csS]\b/.o/g;
}

1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711
# Write down our configuration where it fits #########################

open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
print OUT <<"EOF";
package configdata;

use strict;
use warnings;

use Exporter;
#use vars qw(\@ISA \@EXPORT);
our \@ISA = qw(Exporter);
1712
our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables);
1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741

EOF
print OUT "our %config = (\n";
foreach (sort keys %config) {
    if (ref($config{$_}) eq "ARRAY") {
	print OUT "  ", $_, " => [ ", join(", ",
					   map { quotify("perl", $_) }
					   @{$config{$_}}), " ],\n";
    } else {
	print OUT "  ", $_, " => ", quotify("perl", $config{$_}), ",\n"
    }
}
print OUT <<"EOF";
);

EOF
print OUT "our %target = (\n";
foreach (sort keys %target) {
    if (ref($target{$_}) eq "ARRAY") {
	print OUT "  ", $_, " => [ ", join(", ",
					   map { quotify("perl", $_) }
					   @{$target{$_}}), " ],\n";
    } else {
	print OUT "  ", $_, " => ", quotify("perl", $target{$_}), ",\n"
    }
}
print OUT <<"EOF";
);

1742 1743 1744 1745 1746 1747 1748
EOF
print OUT "our \%available_protocols = (\n";
print OUT "  tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
print OUT "  dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
print OUT <<"EOF";
);

1749 1750 1751 1752 1753 1754 1755 1756
EOF
print OUT "our \@disablables = (\n";
foreach (@disablables) {
    print OUT "  ", quotify("perl", $_), ",\n";
}
print OUT <<"EOF";
);

1757 1758 1759 1760 1761 1762 1763 1764
EOF
print OUT "our \%disabled = (\n";
foreach (sort keys %disabled) {
    print OUT "  ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
}
print OUT <<"EOF";
);

1765
EOF
1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777
print OUT "our %withargs = (\n";
foreach (sort keys %withargs) {
    if (ref($withargs{$_}) eq "ARRAY") {
	print OUT "  ", $_, " => [ ", join(", ",
					   map { quotify("perl", $_) }
					   @{$withargs{$_}}), " ],\n";
    } else {
	print OUT "  ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
    }
}
print OUT <<"EOF";
);
1778

1779
EOF
1780
if ($builder eq "unified") {
1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822
    my $recurse;
    $recurse = sub {
        my $indent = shift;
        foreach (@_) {
            if (ref $_ eq "ARRAY") {
                print OUT " "x$indent, "[\n";
                foreach (@$_) {
                    $recurse->($indent + 4, $_);
                }
                print OUT " "x$indent, "],\n";
            } elsif (ref $_ eq "HASH") {
                my %h = %$_;
                print OUT " "x$indent, "{\n";
                foreach (sort keys %h) {
                    if (ref $h{$_} eq "") {
                        print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
                    } else {
                        print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
                        $recurse->($indent + 8, $h{$_});
                    }
                }
                print OUT " "x$indent, "},\n";
            } else {
                print OUT " "x$indent, quotify("perl", $_), ",\n";
            }
        }
    };
    print OUT "our %unified_info = (\n";
    foreach (sort keys %unified_info) {
        if (ref $unified_info{$_} eq "") {
            print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
        } else {
            print OUT " "x4, quotify("perl", $_), " =>\n";
            $recurse->(8, $unified_info{$_});
        }
    }
    print OUT <<"EOF";
);

EOF
}
print OUT "1;\n";
1823
close(OUT);
1824

1825

1826
print "CC            =$target{cc}\n";
1827
print "CFLAG         =$target{cflags} $config{cflags}\n";
1828
print "SHARED_CFLAG  =$target{shared_cflag}\n";
1829
print "DEFINES       =",join(" ", @{$target{defines}}, @{$config{defines}}),"\n";
1830 1831
print "LFLAG         =$target{lflags}\n";
print "PLIB_LFLAG    =$target{plib_lflags}\n";
1832
print "EX_LIBS       =$target{ex_libs} $config{ex_libs}\n";
1833
print "APPS_OBJ      =$target{apps_obj}\n";
1834
print "CPUID_OBJ     =$target{cpuid_obj}\n";
1835
print "UPLINK_OBJ    =$target{uplink_obj}\n";
1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848
print "BN_ASM        =$target{bn_obj}\n";
print "EC_ASM        =$target{ec_obj}\n";
print "DES_ENC       =$target{des_obj}\n";
print "AES_ENC       =$target{aes_obj}\n";
print "BF_ENC        =$target{bf_obj}\n";
print "CAST_ENC      =$target{cast_obj}\n";
print "RC4_ENC       =$target{rc4_obj}\n";
print "RC5_ENC       =$target{rc5_obj}\n";
print "MD5_OBJ_ASM   =$target{md5_obj}\n";
print "SHA1_OBJ_ASM  =$target{sha1_obj}\n";
print "RMD160_OBJ_ASM=$target{rmd160_obj}\n";
print "CMLL_ENC      =$target{cmll_obj}\n";
print "MODES_OBJ     =$target{modes_obj}\n";
R
Richard Levitte 已提交
1849
print "PADLOCK_OBJ   =$target{padlock_obj}\n";
1850 1851
print "CHACHA_ENC    =$target{chacha_obj}\n";
print "POLY1305_OBJ  =$target{poly1305_obj}\n";
B
Bill Cox 已提交
1852
print "BLAKE2_OBJ    =$target{blake2_obj}\n";
1853
print "PROCESSOR     =$config{processor}\n";
1854 1855 1856
print "RANLIB        =$target{ranlib}\n";
print "ARFLAGS       =$target{arflags}\n";
print "PERL          =$config{perl}\n";
R
Richard Levitte 已提交
1857
print "\n";
1858 1859 1860 1861
print "SIXTY_FOUR_BIT_LONG mode\n" if $config{b64l};
print "SIXTY_FOUR_BIT mode\n" if $config{b64};
print "THIRTY_TWO_BIT mode\n" if $config{b32};
print "BN_LLONG mode\n" if $config{bn_ll};
R
Richard Levitte 已提交
1862
print "RC4 uses $config{rc4_int}\n" if $config{rc4_int} ne $def_int;
B
Ben Laurie 已提交
1863

1864 1865 1866 1867
for (@generated_headers) {
    mkpath(catdir($blddir, dirname($_)));
    run_dofile(catfile($blddir, $_),
               catfile($srcdir, $_.".in"));
R
Richard Levitte 已提交
1868 1869
}

1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900
###
### When the old "unixmake" scheme goes away, so does this function
###
sub build_Makefile {
    run_dofile("Makefile","Makefile.in");

    # Copy all Makefile.in to Makefile (except top-level)
    use File::Find;
    use IO::File;
    find(
        {
            preprocess => sub {
                grep(!/^\./, @_);
            },
            wanted => sub {
                return if ($_ ne "Makefile.in" || $File::Find::dir eq ".");
                my $in = IO::File->new($_, "r") or
                    die sprintf "Error reading Makefile.in in %s: !$\n",
                    $File::Find::dir;
                my $out = IO::File->new("Makefile", "w") or
                    die sprintf "Error writing Makefile in %s: !$\n",
                    $File::Find::dir;
                print $out "# Generated from $_, do not edit\n";
                while (my $line = <$in>) { print $out $line }
                $in->close() or
                    die sprintf "Error reading Makefile.in in %s: !$\n",
                    $File::Find::dir;
                $out->close() or
                    die sprintf "Error writing Makefile in %s: !$\n",
                    $File::Find::dir;
            },
1901
        },
1902 1903
        ".");
}
R
Rich Salz 已提交
1904

1905
my %builders = (
1906
    unified => sub {
1907 1908 1909
        run_dofile(catfile($blddir, $target{build_file}),
                   $config{build_file_template},
                   catfile($srcdir, "Configurations", "common.tmpl"));
1910
    },
1911
    unixmake => sub {
1912 1913 1914 1915
        build_Makefile();

        run_dofile("util/domd", "util/domd.in");
        chmod 0755, "util/domd";
1916 1917 1918
    },
    );

1919
$builders{$builder}->($builder_platform, @builder_opts);
1920

1921
print <<"EOF";
1922

1923
Configured for $target.
1924
EOF
1925

1926
print <<"EOF" if ($disabled{threads} eq "unavailable");
1927 1928 1929

The library could not be configured for supporting multi-threaded
applications as the compiler options required on this system are not known.
1930
See file INSTALL for details if you need multi-threading.
1931 1932
EOF

1933
print <<"EOF" if ($no_shared_warn);
1934

1935 1936 1937 1938 1939
The options 'shared', 'pic' and 'dynamic-engine' aren't supported on this
platform, so we will pretend you gave the option 'no-pic', which also disables
'shared' and 'dynamic-engine'.  If you know how to implement shared libraries
or position independent code, please let us know (but please first make sure
you have tried with a current version of OpenSSL).
R
Rich Salz 已提交
1940 1941
EOF

1942 1943
exit(0);

1944 1945 1946 1947 1948 1949 1950
######################################################################
#
# Helpers and utility functions
#

# Configuration file reading #########################################

1951 1952 1953 1954 1955
# Note: All of the helper functions are for lazy evaluation.  They all
# return a CODE ref, which will return the intended value when evaluated.
# Thus, whenever there's mention of a returned value, it's about that
# intended value.

1956
# Helper function to implement conditional inheritance depending on the
1957
# value of $disabled{asm}.  Used in inherit_from values as follows:
1958 1959 1960 1961 1962 1963
#
#      inherit_from => [ "template", asm("asm_tmpl") ]
#
sub asm {
    my @x = @_;
    sub {
1964
	$disabled{asm} ? () : @x;
1965 1966 1967
    }
}

1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
# Helper function to implement conditional value variants, with a default
# plus additional values based on the value of $config{build_type}.
# Arguments are given in hash table form:
#
#       picker(default => "Basic string: ",
#              debug   => "debug",
#              release => "release")
#
# When configuring with --debug, the resulting string will be
# "Basic string: debug", and when not, it will be "Basic string: release"
#
# This can be used to create variants of sets of flags according to the
# build type:
#
#       cflags => picker(default => "-Wall",
#                        debug   => "-g -O0",
#                        release => "-O3")
#
sub picker {
    my %opts = @_;
    return sub { add($opts{default} || (),
                     $opts{$config{build_type}} || ())->(); }
}

# Helper function to combine several values of different types into one.
# This is useful if you want to combine a string with the result of a
# lazy function, such as:
#
#       cflags => combine("-Wall", sub { $disabled{zlib} ? () : "-DZLIB" })
#
sub combine {
    my @stuff = @_;
    return sub { add(@stuff)->(); }
}

# Helper function to implement conditional values depending on the value
# of $disabled{threads}.  Can be used as follows:
#
#       cflags => combine("-Wall", threads("-pthread"))
#
sub threads {
    my @flags = @_;
    return sub { add($disabled{threads} ? () : @flags)->(); }
}



2015
our $add_called = 0;
2016 2017 2018 2019 2020
# Helper function to implement adding values to already existing configuration
# values.  It handles elements that are ARRAYs, CODEs and scalars
sub _add {
    my $separator = shift;

2021 2022 2023 2024
    # If there's any ARRAY in the collection of values OR the separator
    # is undef, we will return an ARRAY of combined values, otherwise a
    # string of joined values with $separator as the separator.
    my $found_array = !defined($separator);
2025 2026 2027

    my @values =
	map {
2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038
	    my $res = $_;
	    while (ref($res) eq "CODE") {
		$res = $res->();
	    }
	    if (defined($res)) {
		if (ref($res) eq "ARRAY") {
		    $found_array = 1;
		    @$res;
		} else {
		    $res;
		}
2039
	    } else {
2040
		();
2041 2042 2043
	    }
    } (@_);

2044 2045
    $add_called = 1;

2046 2047 2048
    if ($found_array) {
	[ @values ];
    } else {
2049
	join($separator, grep { defined($_) && $_ ne "" } @values);
2050 2051 2052
    }
}
sub add_before {
2053 2054 2055 2056 2057
    my $separator = " ";
    if (ref($_[$#_]) eq "HASH") {
        my $opts = pop;
        $separator = $opts->{separator};
    }
2058 2059 2060 2061
    my @x = @_;
    sub { _add($separator, @x, @_) };
}
sub add {
2062 2063 2064 2065 2066
    my $separator = " ";
    if (ref($_[$#_]) eq "HASH") {
        my $opts = pop;
        $separator = $opts->{separator};
    }
2067 2068 2069 2070
    my @x = @_;
    sub { _add($separator, @_, @x) };
}

2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106
# configuration reader, evaluates the input file as a perl script and expects
# it to fill %targets with target configurations.  Those are then added to
# %table.
sub read_config {
    my $fname = shift;
    open(CONFFILE, "< $fname")
	or die "Can't open configuration file '$fname'!\n";
    my $x = $/;
    undef $/;
    my $content = <CONFFILE>;
    $/ = $x;
    close(CONFFILE);
    my %targets = ();
    {
	local %table = %::table;    # Protect %table from tampering

	eval $content;
	warn $@ if $@;
    }

    # For each target, check that it's configured with a hash table.
    foreach (keys %targets) {
	if (ref($targets{$_}) ne "HASH") {
	    if (ref($targets{$_}) eq "") {
		warn "Deprecated target configuration for $_, ignoring...\n";
	    } else {
		warn "Misconfigured target configuration for $_ (should be a hash table), ignoring...\n";
	    }
	    delete $targets{$_};
	}
    }

    %table = (%table, %targets);

}

R
Rich Salz 已提交
2107 2108
# configuration resolver.  Will only resolve all the lazy evalutation
# codeblocks for the chozen target and all those it inherits from,
2109 2110 2111 2112 2113
# recursively
sub resolve_config {
    my $target = shift;
    my @breadcrumbs = @_;

2114
#    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
2115

2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141
    if (grep { $_ eq $target } @breadcrumbs) {
	die "inherit_from loop!  target backtrace:\n  "
	    ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
    }

    if (!defined($table{$target})) {
	warn "Warning! target $target doesn't exist!\n";
	return ();
    }
    # Recurse through all inheritances.  They will be resolved on the
    # fly, so when this operation is done, they will all just be a
    # bunch of attributes with string values.
    # What we get here, though, are keys with references to lists of
    # the combined values of them all.  We will deal with lists after
    # this stage is done.
    my %combined_inheritance = ();
    if ($table{$target}->{inherit_from}) {
	my @inherit_from =
	    map { ref($_) eq "CODE" ? $_->() : $_ } @{$table{$target}->{inherit_from}};
	foreach (@inherit_from) {
	    my %inherited_config = resolve_config($_, $target, @breadcrumbs);

	    # 'template' is a marker that's considered private to
	    # the config that had it.
	    delete $inherited_config{template};

2142
	    foreach (keys %inherited_config) {
2143 2144 2145 2146
		if (!$combined_inheritance{$_}) {
		    $combined_inheritance{$_} = [];
		}
		push @{$combined_inheritance{$_}}, $inherited_config{$_};
2147
	    }
2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160
	}
    }

    # We won't need inherit_from in this target any more, since we've
    # resolved all the inheritances that lead to this
    delete $table{$target}->{inherit_from};

    # Now is the time to deal with those lists.  Here's the place to
    # decide what shall be done with those lists, all based on the
    # values of the target we're currently dealing with.
    # - If a value is a coderef, it will be executed with the list of
    #   inherited values as arguments.
    # - If the corresponding key doesn't have a value at all or is the
R
Rich Salz 已提交
2161
    #   emoty string, the inherited value list will be run through the
2162 2163 2164 2165
    #   default combiner (below), and the result becomes this target's
    #   value.
    # - Otherwise, this target's value is assumed to be a string that
    #   will simply override the inherited list of values.
2166
    my $default_combiner = add();
2167 2168 2169 2170

    my %all_keys =
	map { $_ => 1 } (keys %combined_inheritance,
			 keys %{$table{$target}});
2171 2172 2173 2174 2175 2176 2177

    sub process_values {
	my $object    = shift;
	my $inherited = shift;  # Always a [ list ]
	my $target    = shift;
	my $entry     = shift;

2178 2179
        $add_called = 0;

2180 2181 2182 2183 2184 2185 2186
        while(ref($object) eq "CODE") {
            $object = $object->(@$inherited);
        }
        if (!defined($object)) {
            return ();
        }
        elsif (ref($object) eq "ARRAY") {
2187
            local $add_called;  # To make sure recursive calls don't affect it
2188 2189 2190 2191 2192 2193 2194 2195 2196 2197
            return [ map { process_values($_, $inherited, $target, $entry) }
                     @$object ];
        } elsif (ref($object) eq "") {
            return $object;
        } else {
            die "cannot handle reference type ",ref($object)
                ," found in target ",$target," -> ",$entry,"\n";
        }
    }

2198
    foreach (sort keys %all_keys) {
2199
        my $previous = $combined_inheritance{$_};
2200 2201 2202 2203 2204 2205 2206 2207

	# Current target doesn't have a value for the current key?
	# Assign it the default combiner, the rest of this loop body
	# will handle it just like any other coderef.
	if (!exists $table{$target}->{$_}) {
	    $table{$target}->{$_} = $default_combiner;
	}

2208 2209 2210 2211 2212 2213
	$table{$target}->{$_} = process_values($table{$target}->{$_},
					       $combined_inheritance{$_},
					       $target, $_);
        unless(defined($table{$target}->{$_})) {
            delete $table{$target}->{$_};
        }
2214 2215 2216 2217
#        if ($extra_checks &&
#            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
#            warn "$_ got replaced in $target\n";
#        }
2218 2219 2220 2221 2222 2223
    }

    # Finally done, return the result.
    return %{$table{$target}};
}

2224
sub usage
2225
	{
2226
	print STDERR $usage;
2227
	print STDERR "\npick os/compiler from:\n";
2228
	my $j=0;
2229
	my $i;
2230
        my $k=0;
2231
	foreach $i (sort keys %table)
2232
		{
2233
		next if $table{$i}->{template};
2234
		next if $i =~ /^debug/;
2235 2236 2237 2238 2239 2240 2241
		$k += length($i) + 1;
		if ($k > 78)
			{
			print STDERR "\n";
			$k=length($i);
			}
		print STDERR $i . " ";
2242 2243 2244
		}
	foreach $i (sort keys %table)
		{
2245
		next if $table{$i}->{template};
2246
		next if $i !~ /^debug/;
2247 2248 2249 2250 2251 2252 2253
		$k += length($i) + 1;
		if ($k > 78)
			{
			print STDERR "\n";
			$k=length($i);
			}
		print STDERR $i . " ";
2254
		}
2255
	print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
2256
	exit(1);
2257 2258
	}

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sub run_dofile
2260 2261
{
    my $out = shift;
2262
    my @templates = @_;
2263

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    unlink $out || warn "Can't remove $out, $!"
        if -f $out;
2266 2267 2268 2269 2270 2271
    foreach (@templates) {
        die "Can't open $_, $!" unless -f $_;
    }
    my $cmd = "$config{perl} \"-I.\" \"-Mconfigdata\" $dofile -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
    #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
    system($cmd);
2272 2273 2274 2275
    exit 1 if $? != 0;
    rename("$out.new", $out) || die "Can't rename $out.new, $!";
}

2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287
# Configuration printer ##############################################

sub print_table_entry
{
    my $target = shift;
    my %target = resolve_config($target);
    my $type = shift;

    # Don't print the templates
    return if $target{template};

    my @sequence = (
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	"sys_id",
2289 2290
	"cc",
	"cflags",
2291
	"defines",
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	"unistd",
	"ld",
2294
	"lflags",
2295
	"plib_lflags",
2296
	"ex_libs",
2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312
	"bn_ops",
	"cpuid_obj",
	"bn_obj",
	"ec_obj",
	"des_obj",
	"aes_obj",
	"bf_obj",
	"md5_obj",
	"sha1_obj",
	"cast_obj",
	"rc4_obj",
	"rmd160_obj",
	"rc5_obj",
	"wp_obj",
	"cmll_obj",
	"modes_obj",
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	"padlock_obj",
2314
	"thread_scheme",
2315 2316 2317 2318 2319
	"perlasm_scheme",
	"dso_scheme",
	"shared_target",
	"shared_cflag",
	"shared_ldflag",
2320
	"shared_rcflag",
2321
	"shared_extension",
2322 2323 2324
	"shared_extension_simple",
	"shared_import_extension",
	"dso_extension",
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	"obj_extension",
	"exe_extension",
2327
	"ranlib",
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	"ar",
2329 2330
	"arflags",
	"multilib",
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	"build_scheme",
2332 2333 2334 2335 2336
	);

    if ($type eq "TABLE") {
	print "\n";
	print "*** $target\n";
2337 2338 2339 2340 2341 2342 2343
        foreach (@sequence) {
            if (ref($target{$_}) eq "ARRAY") {
                printf "\$%-12s = %s\n", $_, join(" ", @{$target{$_}});
            } else {
                printf "\$%-12s = %s\n", $_, $target{$_};
            }
        }
2344 2345 2346 2347 2348 2349
    } elsif ($type eq "HASH") {
	my $largest =
	    length((sort { length($a) <=> length($b) } @sequence)[-1]);
	print "    '$target' => {\n";
	foreach (@sequence) {
	    if ($target{$_}) {
2350 2351 2352 2353 2354
                if (ref($target{$_}) eq "ARRAY") {
                    print "      '",$_,"'"," " x ($largest - length($_))," => [ ",join(", ", map { "'$_'" } @{$target{$_}})," ],\n";
                } else {
                    print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
                }
2355 2356 2357 2358 2359 2360 2361 2362
	    }
	}
	print "    },\n";
    }
}

# Utility routines ###################################################

2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379
# On VMS, if the given file is a logical name, File::Spec::Functions
# will consider it an absolute path.  There are cases when we want a
# purely syntactic check without checking the environment.
sub isabsolute {
    my $file = shift;

    # On non-platforms, we just use file_name_is_absolute().
    return file_name_is_absolute($file) unless $^O eq "VMS";

    # If the file spec includes a device or a directpry spec,
    # file_name_is_absolute() is perfectly safe.
    return file_name_is_absolute($file) if $file =~ m|[:\[]|;

    # Here, we know the given file spec isn't absolute
    return 0;
}

2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402
# Makes a directory absolute and cleans out /../ in paths like foo/../bar
# On some platforms, this uses rel2abs(), while on others, realpath() is used.
# realpath() requires that at least all path components except the last is an
# existing directory.  On VMS, the last component of the directory spec must
# exist.
sub absolutedir {
    my $dir = shift;

    # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
    # will return the volume name for the device, no matter what.  Also,
    # it will return an incorrect directory spec if the argument is a
    # directory that doesn't exist.
    if ($^O eq "VMS") {
        return rel2abs($dir);
    }

    # We use realpath() on Unix, since no other will properly clean out
    # a directory spec.
    use Cwd qw/realpath/;

    return realpath($dir);
}

2403 2404 2405 2406 2407 2408
sub which
	{
	my($name)=@_;
	my $path;
	foreach $path (split /:/, $ENV{PATH})
		{
2409 2410
		my $fullpath = "$path/$name$target{exe_extension}";
		if (-f $fullpath and -x $fullpath)
2411
			{
2412 2413 2414
			return $fullpath
			    unless ($name eq "perl" and
				    system("$fullpath -e " . '\'exit($]<5.0);\''));
2415 2416 2417 2418
			}
		}
	}

2419 2420 2421 2422 2423 2424 2425 2426 2427 2428
sub quotify {
    my %processors = (
	perl    => sub { my $x = shift;
			 $x =~ s/([\\\$\@"])/\\$1/g;
			 return '"'.$x.'"'; },
	);
    my $for = shift;
    my $processor =
	defined($processors{$for}) ? $processors{$for} : sub { shift; };

2429
    return map { $processor->($_); } @_;
2430
}
2431

2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445
# collect_from_file($filename, $line_concat_cond_re, $line_concat)
# $filename is a file name to read from
# $line_concat_cond_re is a regexp detecting a line continuation ending
# $line_concat is a CODEref that takes care of concatenating two lines
sub collect_from_file {
    my $filename = shift;
    my $line_concat_cond_re = shift;
    my $line_concat = shift;

    open my $fh, $filename || die "unable to read $filename: $!\n";
    return sub {
        my $saved_line = "";
        $_ = "";
        while (<$fh>) {
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            s|\R$||;
2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476
            if (defined $line_concat) {
                $_ = $line_concat->($saved_line, $_);
                $saved_line = "";
            }
            if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
                $saved_line = $_;
                next;
            }
            return $_;
        }
        die "$filename ending with continuation line\n" if $_;
        close $fh;
        return undef;
    }
}

# collect_from_array($array, $line_concat_cond_re, $line_concat)
# $array is an ARRAYref of lines
# $line_concat_cond_re is a regexp detecting a line continuation ending
# $line_concat is a CODEref that takes care of concatenating two lines
sub collect_from_array {
    my $array = shift;
    my $line_concat_cond_re = shift;
    my $line_concat = shift;
    my @array = (@$array);

    return sub {
        my $saved_line = "";
        $_ = "";
        while (defined($_ = shift @array)) {
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            s|\R$||;
2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494
            if (defined $line_concat) {
                $_ = $line_concat->($saved_line, $_);
                $saved_line = "";
            }
            if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
                $saved_line = $_;
                next;
            }
            return $_;
        }
        die "input text ending with continuation line\n" if $_;
        return undef;
    }
}

# collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
# $lineiterator is a CODEref that delivers one line at a time.
2495 2496 2497
# All following arguments are regex/CODEref pairs, where the regexp detects a
# line and the CODEref does something with the result of the regexp.
sub collect_information {
2498
    my $lineiterator = shift;
2499 2500
    my %collectors = @_;

2501
    while(defined($_ = $lineiterator->())) {
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2502
        s|\R$||;
2503
        my $found = 0;
2504 2505 2506
        if ($collectors{"BEFORE"}) {
            $collectors{"BEFORE"}->($_);
        }
2507
        foreach my $re (keys %collectors) {
2508
            if ($re !~ /^OTHERWISE|BEFORE|AFTER$/ && /$re/) {
2509 2510 2511 2512 2513 2514 2515 2516
                $collectors{$re}->($lineiterator);
                $found = 1;
            };
        }
        if ($collectors{"OTHERWISE"}) {
            $collectors{"OTHERWISE"}->($lineiterator, $_)
                unless $found || !defined $collectors{"OTHERWISE"};
        }
2517 2518 2519
        if ($collectors{"AFTER"}) {
            $collectors{"AFTER"}->($_);
        }
2520 2521
    }
}