openssl/Configure

#! /usr/bin/env perl
# -*- mode: perl; -*-

##
##  Configure -- OpenSSL source tree configuration script
##  If editing this file, run this command before committing
##	make -f Makefile.in TABLE
##

require 5.000;
use strict;
use File::Basename;
use File::Spec::Functions;

# see INSTALL for instructions.

my $usage="Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [experimental-<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]] [--test-sanity] [--config=FILE] os/compiler[:flags]\n";

# Options:
#
# --config      add the given configuration file, which will be read after
#               any "Configurations*" files that are found in the same
#               directory as this script.
# --openssldir  install OpenSSL in OPENSSLDIR (Default: DIR/ssl if the
#               --prefix option is given; /usr/local/ssl otherwise)
# --prefix      prefix for the OpenSSL include, lib and bin directories
#               (Default: the OPENSSLDIR directory)
#
# --install_prefix  Additional prefix for package builders (empty by
#               default).  This needn't be set in advance, you can
#               just as well use "make INSTALL_PREFIX=/whatever install".
#
# --test-sanity Make a number of sanity checks on the data in this file.
#               This is a debugging tool for OpenSSL developers.
#
# --cross-compile-prefix Add specified prefix to binutils components.
#
# --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.
#
# 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.
# [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)
# [no-]shared	[don't] try to create shared libraries when supported.
# no-asm        do not use assembler
# no-dso        do not compile in any native shared-library methods. This
#               will ensure that all methods just return NULL.
# no-egd        do not compile support for the entropy-gathering daemon APIs
# [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.
# sctp          include SCTP support
# 386           generate 80386 code
# no-sse2	disables IA-32 SSE2 code, above option implies no-sse2
# no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
# -<xxx> +<xxx> compiler options are passed through
#
# 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.
# DES_PTR	use pointer lookup vs arrays in the DES in crypto/des/des_locl.h
# DES_RISC1	use different DES_ENCRYPT macro that helps reduce register
#		dependancies but needs to more registers, good for RISC CPU's
# DES_RISC2	A different RISC variant.
# DES_UNROLL	unroll the inner DES loop, sometimes helps, somtimes hinders.
# DES_INT	use 'int' instead of 'long' for DES_LONG in crypto/des/des.h
#		This is used on the DEC Alpha where long is 8 bytes
#		and int is 4
# BN_LLONG	use the type 'long long' in crypto/bn/bn.h
# MD2_CHAR	use 'char' instead of 'int' for MD2_INT in crypto/md2/md2.h
# MD2_LONG	use 'long' instead of 'int' for MD2_INT in crypto/md2/md2.h
# IDEA_SHORT	use 'short' instead of 'int' for IDEA_INT in crypto/idea/idea.h
# IDEA_LONG	use 'long' instead of 'int' for IDEA_INT in crypto/idea/idea.h
# RC2_SHORT	use 'short' instead of 'int' for RC2_INT in crypto/rc2/rc2.h
# RC2_LONG	use 'long' instead of 'int' for RC2_INT in crypto/rc2/rc2.h
# RC4_CHAR	use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
# RC4_LONG	use 'long' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
# RC4_INDEX	define RC4_INDEX in crypto/rc4/rc4_locl.h.  This turns on
#		array lookups instead of pointer use.
# RC4_CHUNK	enables code that handles data aligned at long (natural CPU
#		word) boundary.
# RC4_CHUNK_LL	enables code that handles data aligned at long long boundary
#		(intended for 64-bit CPUs running 32-bit OS).
# BF_PTR	use 'pointer arithmatic' for Blowfish (unsafe on Alpha).
# BF_PTR2	intel specific version (generic version is more efficient).
#
# Following are set automatically by this script
#
# 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,
# 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

# Minimum warning options... any contributions to OpenSSL should at least get
# past these.

my $gcc_devteam_warn = "-Wall -pedantic -DPEDANTIC -Wno-long-long -Wsign-compare -Wmissing-prototypes -Wshadow -Wformat -Wtype-limits -Werror -DREF_CHECK -DDEBUG_UNUSED";

# 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
# following warnings can also be enabled:
# -Wswitch-enum, -Wunused-macros, -Wmissing-field-initializers,
# -Wcast-align,
# -Wunreachable-code -Wunused-parameter -Wlanguage-extension-token
# -Wextended-offsetof
my $clang_devteam_warn = "-Wno-unused-parameter -Wno-missing-field-initializers -Wno-language-extension-token -Wno-extended-offsetof -Wconditional-uninitialized -Qunused-arguments -Wincompatible-pointer-types-discards-qualifiers -Wmissing-variable-declarations";

# Warn that "make depend" should be run?
my $warn_make_depend = 0;

# These are used in addition to $gcc_devteam_warn unless this is a mingw build.
# This adds backtrace information to the memory leak info.
my $memleak_devteam_backtrace = "-rdynamic -DCRYPTO_MDEBUG_BACKTRACE";


my $strict_warnings = 0;

my $x86_gcc_des="DES_PTR DES_RISC1 DES_UNROLL";

# MD2_CHAR slags pentium pros
my $x86_gcc_opts="RC4_INDEX MD2_INT";

#$bits1="SIXTEEN_BIT ";
#$bits2="THIRTY_TWO_BIT ";
my $bits1="THIRTY_TWO_BIT ";
my $bits2="SIXTY_FOUR_BIT ";

# As for $BSDthreads. Idea is to maintain "collective" set of flags,
# which would cover all BSD flavors. -pthread applies to them all,
# 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?
my $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";

#
# 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",
};

# table of known configurations, read in from files
#
# The content of each entry can take one of two forms:
#
# - old style config-string, colon seperated fields with exactly the
#   following structure.:
#
#	$cc : $cflags : $unistd : $thread_cflag : $sys_id : $lflags : $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 : $engines_obj : $perlasm_scheme : $dso_scheme : $shared_target : $shared_cflag : $shared_ldflag : $shared_extension : $ranlib : $arflags : $multilib
#
#   We use the stringtohash function - defined below - to combine with the
#   fields and form a proper hash table from the string.
#
# - direct transfer of old style config string to hash table, using the names
#   of the fields as keys:
#
#	{
#	  cc => $cc,
#	  cflags => $cflags,
#	  unistd => $unistd,
#	  thread_cflag => $thread_cflag,
#	  sys_id => $sys_id,
#	  lflags => $lflags,
#	  bn_ops => $bn_ops,
#	  cpuid_obj => $cpuid_obj,
#	  bn_obj => $bn_obj,
#	  ec_obj => $ec_obj,
#	  des_obj => $des_obj,
#	  aes_obj => $aes_obj,
#	  bf_obj => $bf_obj,
#	  md5_obj => $md5_obj,
#	  sha1_obj => $sha1_obj,
#	  cast_obj => $cast_obj,
#	  rc4_obj => $rc4_obj,
#	  rmd160_obj => $rmd160_obj,
#	  rc5_obj => $rc5_obj,
#	  wp_obj => $wp_obj,
#	  cmll_obj => $cmll_obj,
#	  modes_obj => $modes_obj,
#	  engines_obj => $engines_obj,
#	  perlasm_scheme => $perlasm_scheme,
#	  dso_scheme => $dso_scheme,
#	  shared_target => $shared_target,
#	  shared_cflag => $shared_cflag,
#	  shared_ldflag => $shared_ldflag,
#	  shared_extension => $shared_extension,
#	  ranlib => $ranlib,
#	  arflags => $arflags,
#	  multilib => $multilib
#	}
#
# - new style config hash table, which has additional attributes for debug
#   and non-debug flags to be added to the common flags, for cflags and lflags:
#
#	{
#	  cc => $cc,
#	  cflags => $cflags,
#	  debug_cflags => $debug_cflags,
#	  release_cflags => $release_cflags,
#	  unistd => $unistd,
#	  thread_cflag => $thread_cflag,
#	  sys_id => $sys_id,
#	  lflags => $lflags,
#	  debug_lflags => $debug_lflags,
#	  release_lflags => $release_lflags,
#	  bn_ops => $bn_ops,
#	  cpuid_obj => $cpuid_obj,
#	  bn_obj => $bn_obj,
#	  ec_obj => $ec_obj,
#	  des_obj => $des_obj,
#	  aes_obj => $aes_obj,
#	  bf_obj => $bf_obj,
#	  md5_obj => $md5_obj,
#	  sha1_obj => $sha1_obj,
#	  cast_obj => $cast_obj,
#	  rc4_obj => $rc4_obj,
#	  rmd160_obj => $rmd160_obj,
#	  rc5_obj => $rc5_obj,
#	  wp_obj => $wp_obj,
#	  cmll_obj => $cmll_obj,
#	  modes_obj => $modes_obj,
#	  engines_obj => $engines_obj,
#	  chacha_obj => $wp_obj,
#	  poly1305_obj => $cmll_obj,
#	  dso_scheme => $dso_scheme,
#	  shared_target => $shared_target,
#	  shared_cflag => $shared_cflag,
#	  shared_ldflag => $shared_ldflag,
#	  shared_extension => $shared_extension,
#	  ranlib => $ranlib,
#	  arflags => $arflags,
#	  multilib => $multilib
#	}
#
# The configuration reader will do what it can to translate everything into
# new style config hash tables, including merging $target and debug-$target
# if they are similar enough.
#
# The configuration hashes can refer to templates in two different manners:
#
# - as part of the hash, one can have a key called 'inherit_from' that
#   indicate what other configuration hashes to inherit data from.
#   These are resolved recursively.
#
#   Inheritance works as a set of default values that can be overriden
#   by corresponding attribute values in the inheriting configuration.
#
#   If several configurations are given in the 'inherit_from' array, the
#   values of same attribute are concatenated with space separation.
#   With this, it's possible to have several smaller templates for
#   different configuration aspects that can be combined into a complete
#   configuration.
#
#   Example:
#
#	"foo" => {
#		template => 1,
#		haha => "haha",
#		hoho => "ho"
#	},
#	"bar" => {
#		template => 1,
#		hoho => "ho",
#		hehe => "hehe"
#	},
#	"laughter" => {
#		inherit_from => [ "foo", "bar" ],
#	}
#
#	The entry for "foo" will become as follows after processing:
#
#	"laughter" => {
#		haha => "haha",
#		hoho => "ho ho",
#		hehe => "hehe"
#	}
#
#   Note 1: any entry from the table can be used as a template.
#   Note 2: pure templates have the attribute 'template => 1' and cannot
#           be used as targets.
#
# - instead of a string, one can have a code block of the form
#   'sub { /* your code here */ }', where the arguments are the list of
#   inherited values for that key.  In fact, the concatenation of strings
#   is really done by using 'sub { join(" ",@_) }' on the list of inherited
#   values.
#
#   Example:
#
#	"foo" => {
#		template => 1,
#		haha => "ha ha",
#		hoho => "ho",
#		ignored => "This should not appear in the end result",
#	},
#	"bar" => {
#		template => 1,
#		haha => "ah",
#		hoho => "haho",
#		hehe => "hehe"
#	},
#	"laughter" => {
#		inherit_from => [ "foo", "bar" ],
#		hehe => sub { join(" ",(@_,"!!!")) },
#		ignored => "",
#	}
#
#	The entry for "foo" will become as follows after processing:
#
#	"laughter" => {
#		haha => "ha ha ah",
#		hoho => "ho haho",
#		hehe => "hehe !!!",
#		ignored => ""
#	}
#

my %table=(

    # All these templates are merely a translation of the corresponding
    # variables further up.
    #
    # Note: as long as someone might use old style configuration strings,
    # or we bother supporting that, those variables need to stay

    x86_asm => {
	template	=> 1,
	cpuid_obj	=> "x86cpuid.o",
	bn_obj		=> "bn-586.o co-586.o x86-mont.o x86-gf2m.o",
	ec_obj		=> "ecp_nistz256.o ecp_nistz256-x86.o",
	des_obj		=> "des-586.o crypt586.o",
	aes_obj		=> "aes-586.o vpaes-x86.o aesni-x86.o",
	bf_obj		=> "bf-586.o",
	md5_obj		=> "md5-586.o",
	sha1_obj	=> "sha1-586.o sha256-586.o sha512-586.o",
	rc4_obj		=> "rc4-586.o",
	rmd160_obj	=> "rmd-586.o",
	rc5_obj		=> "rc5-586.o",
	wp_obj		=> "wp_block.o wp-mmx.o",
	cmll_obj	=> "cmll-x86.o",
	modes_obj	=> "ghash-x86.o",
	engines_obj	=> "e_padlock-x86.o"
    },
    x86_elf_asm => {
	template	=> 1,
	inherit_from	=> [ "x86_asm" ],
	perlasm_scheme	=> "elf"
    },
    x86_64_asm => {
	template	=> 1,
	cpuid_obj       => "x86_64cpuid.o",
	bn_obj          => "x86_64-gcc.o x86_64-mont.o x86_64-mont5.o x86_64-gf2m.o rsaz_exp.o rsaz-x86_64.o rsaz-avx2.o",
	ec_obj          => "ecp_nistz256.o ecp_nistz256-x86_64.o",
	aes_obj         => "aes-x86_64.o vpaes-x86_64.o bsaes-x86_64.o aesni-x86_64.o aesni-sha1-x86_64.o aesni-sha256-x86_64.o aesni-mb-x86_64.o",
	md5_obj         => "md5-x86_64.o",
	sha1_obj        => "sha1-x86_64.o sha256-x86_64.o sha512-x86_64.o sha1-mb-x86_64.o sha256-mb-x86_64.o",
	rc4_obj         => "rc4-x86_64.o rc4-md5-x86_64.o",
	wp_obj          => "wp-x86_64.o",
	cmll_obj        => "cmll-x86_64.o cmll_misc.o",
	modes_obj       => "ghash-x86_64.o aesni-gcm-x86_64.o",
	engines_obj     => "e_padlock-x86_64.o"
    },
    ia64_asm => {
	template	=> 1,
	cpuid_obj       => "ia64cpuid.o",
	bn_obj          => "bn-ia64.o ia64-mont.o",
	aes_obj         => "aes_core.o aes_cbc.o aes-ia64.o",
	md5_obj         => "md5-ia64.o",
	sha1_obj        => "sha1-ia64.o sha256-ia64.o sha512-ia64.o",
	rc4_obj         => "rc4-ia64.o rc4_skey.o",
	modes_obj       => "ghash-ia64.o",
	perlasm_scheme	=> "void"
    },
    sparcv9_asm => {
	template	=> 1,
	cpuid_obj       => "sparcv9cap.o sparccpuid.o",
	bn_obj          => "bn-sparcv9.o sparcv9-mont.o sparcv9a-mont.o vis3-mont.o sparct4-mont.o sparcv9-gf2m.o",
        ec_obj          => "ecp_nistz256.o ecp_nistz256-sparcv9.o",
	des_obj         => "des_enc-sparc.o fcrypt_b.o dest4-sparcv9.o",
	aes_obj         => "aes_core.o aes_cbc.o aes-sparcv9.o aest4-sparcv9.o",
	md5_obj         => "md5-sparcv9.o",
	sha1_obj        => "sha1-sparcv9.o sha256-sparcv9.o sha512-sparcv9.o",
	cmll_obj        => "camellia.o cmll_misc.o cmll_cbc.o cmllt4-sparcv9.o",
	modes_obj       => "ghash-sparcv9.o",
	perlasm_scheme	=> "void"
    },
    sparcv8_asm => {
	template	=> 1,
	cpuid_obj       => "",
	bn_obj          => "sparcv8.o",
	des_obj         => "des_enc-sparc.o fcrypt_b.o",
	perlasm_scheme	=> "void"
    },
    alpha_asm => {
	template	=> 1,
	cpuid_obj       => "alphacpuid.o",
	bn_obj          => "bn_asm.o alpha-mont.o",
	sha1_obj        => "sha1-alpha.o",
	modes_obj       => "ghash-alpha.o",
	perlasm_scheme	=> "void"
    },
    mips32_asm => {
	template	=> 1,
	bn_obj          => "bn-mips.o mips-mont.o",
	aes_obj         => "aes_cbc.o aes-mips.o",
	sha1_obj        => "sha1-mips.o sha256-mips.o",
    },
    mips64_asm => {
	inherit_from	=> [ "mips32_asm" ],
	template	=> 1,
	sha1_obj        => sub { join(" ", @_, "sha512-mips.o") }
    },
    s390x_asm => {
	template	=> 1,
	cpuid_obj       => "s390xcap.o s390xcpuid.o",
	bn_obj          => "bn-s390x.o s390x-mont.o s390x-gf2m.o",
	aes_obj         => "aes-s390x.o aes-ctr.o aes-xts.o",
	sha1_obj        => "sha1-s390x.o sha256-s390x.o sha512-s390x.o",
	rc4_obj         => "rc4-s390x.o",
	modes_obj       => "ghash-s390x.o",
    },
    armv4_asm => {
	template	=> 1,
	cpuid_obj       => "armcap.o armv4cpuid.o",
	bn_obj          => "bn_asm.o armv4-mont.o armv4-gf2m.o",
	ec_obj          => "ecp_nistz256.o ecp_nistz256-armv4.o",
	aes_obj         => "aes_cbc.o aes-armv4.o bsaes-armv7.o aesv8-armx.o",
	sha1_obj        => "sha1-armv4-large.o sha256-armv4.o sha512-armv4.o",
	modes_obj       => "ghash-armv4.o ghashv8-armx.o",
	perlasm_scheme	=> "void"
    },
    aarch64_asm => {
	template	=> 1,
	cpuid_obj       => "armcap.o arm64cpuid.o mem_clr.o",
	ec_obj          => "ecp_nistz256.o ecp_nistz256-armv8.o",
	bn_obj          => "bn_asm.o armv8-mont.o",
	aes_obj         => "aes_core.o aes_cbc.o aesv8-armx.o vpaes-armv8.o",
	sha1_obj        => "sha1-armv8.o sha256-armv8.o sha512-armv8.o",
	modes_obj       => "ghashv8-armx.o",
    },
    parisc11_asm => {
	template	=> 1,
	cpuid_obj       => "pariscid.o",
	bn_obj          => "bn_asm.o parisc-mont.o",
	aes_obj         => "aes_core.o aes_cbc.o aes-parisc.o",
	sha1_obj        => "sha1-parisc.o sha256-parisc.o sha512-parisc.o",
	rc4_obj         => "rc4-parisc.o",
	modes_obj       => "ghash-parisc.o",
	perlasm_scheme	=> "32"
    },
    parisc20_64_asm => {
	template	=> 1,
	inherit_from	=> [ "parisc11_asm" ],
	bn_obj          => sub { my $r=join(" ",@_); $r=~s/bn_asm/pa-risc2W/; $r; },
	perlasm_scheme	=> "64",
    },
    ppc64_asm => {
	template	=> 1,
	cpuid_obj       => "ppccpuid.o ppccap.o",
	bn_obj          => "bn-ppc.o ppc-mont.o ppc64-mont.o",
	aes_obj         => "aes_core.o aes_cbc.o aes-ppc.o vpaes-ppc.o aesp8-ppc.o",
	sha1_obj        => "sha1-ppc.o sha256-ppc.o sha512-ppc.o sha256p8-ppc.o sha512p8-ppc.o",
	modes_obj       => "ghashp8-ppc.o",
    },
    ppc32_asm => {
	inherit_from	=> [ "ppc64_asm" ],
	template	=> 1
    },
);

{   my $no_asm_templates=0;
    foreach (@ARGV) { $no_asm_templates=1 if (/^\-?no\-asm$/); }
    sub asm { $no_asm_templates?():@_; }
}


sub stringtohash {
    my $in = shift @_;
    if (ref($in) eq "HASH") {
	return $in;
    }
    my @stringsequence = (
	"cc",
	"cflags",
	"unistd",
	"thread_cflag",
	"sys_id",
	"lflags",
	"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",
	"engines_obj",
	"perlasm_scheme",
	"dso_scheme",
	"shared_target",
	"shared_cflag",
	"shared_ldflag",
	"shared_extension",
	"ranlib",
	"arflags",
	"multilib",
	);

    # return a ref to a hash, that's what the outer braces are for.
    return { map { shift @stringsequence => $_ } split /:/, $in };
};

# Read configuration target stanzas from a file, so that people can have
# local files with their own definitions
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 = ();
	eval $content;

	# Make sure we have debug- targets first
	my @keys =
	    sort {
		my $a_nd = $a =~ m/^debug-/ ? $' :$a;
		my $b_nd = $b =~ m/^debug-/ ? $' :$b;
		my $res = 0;

		if (($a_nd == $a) == ($b_nd == $b)) {
		    # they are both debug- or not, compare them as they are
		    $res = $a cmp $b;
		} elsif ($a_nd != $a) {
		    # $a is debug-, make it lesser
		    $res = -1;
		} else {
		    # $b is debug-, make $a greater
		    $res = 1;
		}
		$res;
	    } keys %targets;

	foreach (@keys) {
	    if (ref($targets{$_}) ne "HASH") {
		# Value is assumed to be a string.  Split it up to
		# become a hash table of parameters.  Also, try to
		# merge debug- variants with the non-debug target.

		# Start with converting the value from a string to a
		# standardised hash of fields.  Using $tohash is safe,
		# if the input is already a hash ref, it's just returned
		# back.
		$targets{$_} = stringtohash($targets{$_});

		# If the current target is a debug target, there might
		# be a corresponding non-debug target that we can merge
		# with.  If it isn't a debug- target, we've already done
		# as much merging as we can and do not need to bother
		# with that any more.
		if ($_ =~ m/^debug-/) {
		    my $debugkey = $_;
		    my $nondebugkey = $';
		    my $debug = $targets{$debugkey};
		    my $nondebug;

		    if ($targets{$nondebugkey}) {
			$nondebug = stringtohash($targets{$nondebugkey});
		    }

		    if ($nondebug) {
			# There's both a debug and non-debug variant of
			# this target, so we should try to merge them
			# together.

			# First, check that the non-debug variant isn't
			# already built up with all it should have.
			if ($nondebug->{debug_cflags}
			    || $nondebug->{release_cflags}
			    || $nondebug->{debug_lflags}
			    || $nondebug->{release_lflags}) {
			    warn "there's a debug target $debugkey to be merged with a target $nondebugkey, but the latter seems to already have both nodebug and debug information.  This requires human intervention.  Skipping $debugkey...";
			    next;
			}

			# Now, check similarity.
			# For keys they have in common, support that
			# cflags and lflags can differ, otherwise they
			# must have exactly the same values for them
			# to be merged into one.
			my $similarenough = 1;
			for (keys %{$debug}) {
			    if ($nondebug->{$_} ne $debug->{$_}
				&& $_ !~ m/^[cl]flags$/) {
				$similarenough = 0;
				last;
			    }
			}

			if ($similarenough) {
			    # Here's where the magic happens, split the
			    # options in the debug and non-debug variants
			    # cflags and ldflags into three strings each,
			    # one with common flags, one with extra debug
			    # flags and one with extra non-debug flags.

			    # The result ends up in %h_nondebug, which
			    # becomes the merged variant when we're done.
			    # for each of cflags and lflags, they are
			    # replaced with cflags, debug_cflags,
			    # release_cflags and similar for lflags.
			    #
			    # The purpose is that 'cflags' should be
			    # used together with 'debug_cflags' or
			    # 'release_cflags' depending on what the
			    # user asks for.
			    foreach (("cflags", "lflags")) {
				my @list_d = split /\s+/, $debug->{$_};
				my @list_nd = split /\s+/, $nondebug->{$_};
				my %presence = (); # bitmap
						   # 1: present in @list_d
						   # 2: present in @list_nd
						   # 3: present in both
				map { $presence{$_} += 1; } @list_d;
				map { $presence{$_} += 2; } @list_nd;

				delete $nondebug->{$_};
				# Note: we build from the original lists to
				# preserve order, it might be important
				$nondebug->{"debug-".$_} =
				    join(" ",
					 grep { $presence{$_} == 1 } @list_d);
				$nondebug->{"nodebug-".$_} =
				    join(" ",
					 grep { $presence{$_} == 2 } @list_nd);
				$nondebug->{$_} =
				    join(" ",
					 grep { $presence{$_} == 3 } @list_d);
			    }

			    $targets{$nondebugkey} = $nondebug;
			    delete $targets{$debugkey};
			}
		    }
		}
	    }
	}

	%table = (%table, %targets);

	# Local function to resolve inheritance
	my $resolve_inheritance;
	$resolve_inheritance =
	    sub {
		my $target = shift;
		my @breadcrumbs = @_;

		if (grep { $_ eq $target } @breadcrumbs) {
		    die "inherit_from loop!  target backtrace:\n  "
			,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
		}

		# 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}) {
		    foreach (@{$table{$target}->{inherit_from}}) {
			my %inherited_config =
			    $resolve_inheritance->($_, $target, @breadcrumbs);

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

			map {
			    if (!$combined_inheritance{$_}) {
				$combined_inheritance{$_} = [];
			    }
			    push @{$combined_inheritance{$_}}, $inherited_config{$_};
			} keys %inherited_config;
		    }
		}

		# 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 emoty string, the inherited value list will be run
		#   through the 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.
		my $default_combiner = sub { join(' ',@_) };

		my %all_keys =
		    map { $_ => 1 } (keys %combined_inheritance,
				     keys %{$table{$target}});
		foreach (sort keys %all_keys) {

		    # 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;
		    }

		    my $valuetype = ref($table{$target}->{$_});
		    if ($valuetype eq "CODE") {
			# CODE reference, execute it with the inherited values
			# as arguments.
			$table{$target}->{$_} =
			    $table{$target}->{$_}->(@{$combined_inheritance{$_}});
		    } elsif ($valuetype eq "") {
			# Scalar, just leave it as is.
		    } else {
			# Some other type of reference that we don't handle.
			# Better to abort at this point.
			die "cannot handle reference type $valuetype,"
			    ," found in target $target -> $_\n";
		    }
		}

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

	# Go through all new targets and resolve inheritance and template
	# references.
	foreach (keys %targets) {
	    # We're ignoring the returned values here, they are only valuable
	    # to the inner recursion of this function.
	    $resolve_inheritance->($_);
	}
}

my ($vol, $dir, $dummy) = File::Spec->splitpath($0);
my $pattern = File::Spec->catpath($vol, $dir, "Configurations/*.conf");
foreach (sort glob($pattern) ) {
    &read_config($_);
}

my @MK1MF_Builds=qw(VC-WIN64I VC-WIN64A
		    debug-VC-WIN64I debug-VC-WIN64A
		    VC-NT VC-CE VC-WIN32 debug-VC-WIN32
		    BC-32
		    netware-clib netware-clib-bsdsock
		    netware-libc netware-libc-bsdsock);

my $prefix="";
my $libdir="";
my $openssldir="";
my $exe_ext="";
my $install_prefix= "$ENV{'INSTALL_PREFIX'}";
my $cross_compile_prefix="";
my $fipslibdir="/usr/local/ssl/fips-2.0/lib/";
my $nofipscanistercheck=0;
my $baseaddr="0xFB00000";
my $no_threads=0;
my $threads=0;
my $no_shared=0; # but "no-shared" is default
my $zlib=1;      # but "no-zlib" is default
my $no_rfc3779=0;
my $no_asm=0;
my $no_dso=0;
my @skip=();
my $Makefile="Makefile";
my $des_locl="crypto/des/des_locl.h";
my $des	="include/openssl/des.h";
my $bn	="include/openssl/bn.h";
my $md2	="include/openssl/md2.h";
my $rc4	="include/openssl/rc4.h";
my $rc4_locl="crypto/rc4/rc4_locl.h";
my $idea	="include/openssl/idea.h";
my $rc2	="include/openssl/rc2.h";
my $bf	="crypto/bf/bf_locl.h";
my $bn_asm	="bn_asm.o";
my $des_enc="des_enc.o fcrypt_b.o";
my $aes_enc="aes_core.o aes_cbc.o";
my $bf_enc	="bf_enc.o";
my $cast_enc="c_enc.o";
my $rc4_enc="rc4_enc.o rc4_skey.o";
my $rc5_enc="rc5_enc.o";
my $cmll_enc="camellia.o cmll_misc.o cmll_cbc.o";
my $chacha_enc="chacha_enc.o";
my $processor="";
my $default_ranlib;
my $perl;
my $fips=0;

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

my @disablables = (
    "aes",
    "asm",
    "bf",
    "camellia",
    "capieng",
    "cast",
    "chacha",
    "cmac",
    "cms",
    "comp",
    "crypto-mdebug",
    "ct",
    "deprecated",
    "des",
    "dgram",
    "dh",
    "dsa",
    "dso",
    "dtls",
    "dynamic[-_]engine",
    "ec",
    "ec2m",
    "ec_nistp_64_gcc_128",
    "engine",
    "err",			# Really???
    "gost",
    "heartbeats",
    "hmac",
    "hw(-.+)?",
    "idea",
    "jpake",
    "locking",			# Really???
    "md2",
    "md4",
    "md5",
    "mdc2",
    "md[-_]ghost94",
    "nextprotoneg",
    "ocb",
    "ocsp",
    "poly1305",
    "posix-io",
    "psk",
    "rc2",
    "rc4",
    "rc5",
    "rdrand",
    "rfc3779",
    "rijndael",			# Old AES name
    "rmd160",
    "rsa",
    "scrypt",
    "sct",
    "sctp",
    "seed",
    "sha",
    "shared",
    "sock",
    "srp",
    "srtp",
    "sse2",
    "ssl",
    "ssl3",
    "ssl3-method",
    "ssl-trace",
    "static-engine",
    "stdio",
    "store",
    "threads",
    "tls",
    "tls1",
    "unit-test",
    "whirlpool",
    "zlib",
    "zlib-dynamic",
    );

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

my %disabled = ( # "what"         => "comment" [or special keyword "experimental"]
		 "ec_nistp_64_gcc_128" => "default",
		 "egd"            => "default",
		 "jpake"          => "experimental",
		 "md2"            => "default",
		 "rc5"            => "default",
		 "sctp"           => "default",
		 "shared"         => "default",
		 "ssl-trace"	  => "default",
		 "store"	  => "experimental",
		 "unit-test"	  => "default",
		 "zlib"           => "default",
		 "zlib-dynamic"   => "default",
		 "crypto-mdebug"  => "default",
	       );
my @experimental = ();

# This is what $depflags will look like with the above defaults
# (we need this to see if we should advise the user to run "make depend"):
my $default_depflags = " -DOPENSSL_NO_CRYPTO_MDEBUG -DOPENSSL_NO_EC_NISTP_64_GCC_128 -DOPENSSL_NO_JPAKE -DOPENSSL_NO_MD2 -DOPENSSL_NO_RC5 -DOPENSSL_NO_SCTP -DOPENSSL_NO_SSL_TRACE -DOPENSSL_NO_STORE -DOPENSSL_NO_UNIT_TEST";

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

# For features called "experimental" here, a more explicit "experimental-foo" is needed to enable.
# We will collect such requests in @experimental.
# To avoid accidental use of experimental features, applications will have to use -DOPENSSL_EXPERIMENTAL_FOO.


my $no_sse2=0;

&usage if ($#ARGV < 0);

my $flags;
my $depflags;
my $openssl_experimental_defines;
my $openssl_algorithm_defines;
my $openssl_thread_defines;
my $openssl_sys_defines="";
my $openssl_other_defines;
my $libs;
my $target;
my $options;
my $api;
my $make_depend=0;
my %withargs=();
my $build_prefix = "release_";

my @argvcopy=@ARGV;
my $argvstring="";
my $argv_unprocessed=1;

while($argv_unprocessed)
	{
	$flags="";
	$depflags="";
	$openssl_experimental_defines="";
	$openssl_algorithm_defines="";
	$openssl_thread_defines="";
	$openssl_sys_defines="";
	$openssl_other_defines="";
	$libs="";
	$target="";
	$options="";

	$argv_unprocessed=0;
	$argvstring=join(' ',@argvcopy);

PROCESS_ARGS:
	{
	my %unsupported_options = ();
	foreach (@argvcopy)
		{
		s /^-no-/no-/; # some people just can't read the instructions

		# 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/;

		if (/^(no|disable|enable|experimental)-(.+)$/)
			{
			my $word = $2;
			if (!grep { $word =~ /^${_}$/ } @disablables)
				{
				$unsupported_options{$_} = 1;
				next;
				}
			}
		if (/^no-(.+)$/ || /^disable-(.+)$/)
			{
			if (!($disabled{$1} eq "experimental"))
				{
				if ($1 eq "ssl")
					{
					$disabled{"ssl3"} = "option(ssl)";
					}
				elsif ($1 eq "tls")
					{
					$disabled{"tls1"} = "option(tls)"
					}
				elsif ($1 eq "ssl3-method")
					{
					$disabled{"ssl3-method"} = "option(ssl)";
					$disabled{"ssl3"} = "option(ssl)";
					}
				else
					{
					$disabled{$1} = "option";
					}
				}
			}
		elsif (/^enable-(.+)$/ || /^experimental-(.+)$/)
			{
			my $algo = $1;
			if ($disabled{$algo} eq "experimental")
				{
				die "You are requesting an experimental feature; please say 'experimental-$algo' if you are sure\n"
					unless (/^experimental-/);
				push @experimental, $algo;
				}
			delete $disabled{$algo};

			$threads = 1 if ($algo eq "threads");
			}
		elsif (/^--test-sanity$/)
			{
			exit(&test_sanity());
			}
		elsif (/^--strict-warnings$/)
			{
			$strict_warnings = 1;
			}
		elsif (/^--debug$/)
			{
			$build_prefix = "debug_";
			}
		elsif (/^--release$/)
			{
			$build_prefix = "release_";
			}
		elsif (/^reconfigure/ || /^reconf/)
			{
			if (open(IN,"<$Makefile"))
				{
				my $config_args_found=0;
				while (<IN>)
					{
					chomp;
					if (/^CONFIGURE_ARGS=(.*)/)
						{
						$argvstring=$1;
						@argvcopy=split(' ',$argvstring);
						die "Incorrect data to reconfigure, please do a normal configuration\n"
							if (grep(/^reconf/,@argvcopy));
						print "Reconfiguring with: $argvstring\n";
						$argv_unprocessed=1;
						$config_args_found=1;
						}
					elsif (/^CROSS_COMPILE=\s*(.*)/)
						{
						$ENV{CROSS_COMPILE}=$1;
						}
					elsif (/^CC=\s*(?:\$\(CROSS_COMPILE\))?(.*?)$/)
						{
						$ENV{CC}=$1;
						}
					}
				close(IN);
				last PROCESS_ARGS if ($config_args_found);
				}
			die "Insufficient data to reconfigure, please do a normal configuration\n";
			}
		elsif (/^386$/)
			{ $processor=386; }
		elsif (/^fips$/)
			{
			$fips=1;
			}
		elsif (/^rsaref$/)
			{
			# No RSAref support any more since it's not needed.
			# The check for the option is there so scripts aren't
			# broken
			}
		elsif (/^nofipscanistercheck$/)
			{
			$fips = 1;
			$nofipscanistercheck = 1;
			}
		elsif (/^[-+]/)
			{
			if (/^--prefix=(.*)$/)
				{
				$prefix=$1;
				}
			elsif (/^--api=(.*)$/)
				{
				$api=$1;
				}
			elsif (/^--libdir=(.*)$/)
				{
				$libdir=$1;
				}
			elsif (/^--openssldir=(.*)$/)
				{
				$openssldir=$1;
				}
			elsif (/^--install.prefix=(.*)$/)
				{
				$install_prefix=$1;
				}
			elsif (/^--with-zlib-lib=(.*)$/)
				{
				$withargs{"zlib-lib"}=$1;
				}
			elsif (/^--with-zlib-include=(.*)$/)
				{
				$withargs{"zlib-include"}="-I$1";
				}
			elsif (/^--with-fipslibdir=(.*)$/)
				{
				$fipslibdir="$1/";
				}
			elsif (/^--with-baseaddr=(.*)$/)
				{
				$baseaddr="$1";
				}
			elsif (/^--cross-compile-prefix=(.*)$/)
				{
				$cross_compile_prefix=$1;
				}
			elsif (/^--config=(.*)$/)
				{
				read_config $1;
				}
			elsif (/^-[lL](.*)$/ or /^-Wl,/)
				{
				$libs.=$_." ";
				}
			else	# common if (/^[-+]/), just pass down...
				{
				$_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
				$flags.=$_." ";
				}
			}
		elsif ($_ =~ /^([^:]+):(.+)$/)
			{
			eval "\$table{\$1} = \"$2\""; # allow $xxx constructs in the string
			$target=$1;
			}
		else
			{
			die "target already defined - $target (offending arg: $_)\n" if ($target ne "");
			$target=$_;
			}

		unless ($_ eq $target || /^no-/ || /^disable-/)
			{
			# "no-..." follows later after implied disactivations
			# have been derived.  (Don't take this too seroiusly,
			# we really only write OPTIONS to the Makefile out of
			# nostalgia.)

			if ($options eq "")
				{ $options = $_; }
			else
				{ $options .= " ".$_; }
			}
		}

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

	if (keys %unsupported_options)
		{
		die "***** Unsupported options: ",
			join(", ", keys %unsupported_options), "\n";
		}
	}
	}


if ($processor eq "386")
	{
	$disabled{"sse2"} = "forced";
	}

if (!defined($disabled{"zlib-dynamic"}))
	{
	# "zlib-dynamic" was specifically enabled, so enable "zlib"
	delete $disabled{"zlib"};
	}

if (defined($disabled{"rijndael"}))
	{
	$disabled{"aes"} = "forced";
	}
if (defined($disabled{"des"}))
	{
	$disabled{"mdc2"} = "forced";
	}
if (defined($disabled{"ec"}))
	{
	$disabled{"ecdsa"} = "forced";
	$disabled{"ecdh"} = "forced";
	}

# SSL 3.0 and TLS requires MD5 and SHA and either RSA or DSA+DH
if (defined($disabled{"md5"}) || defined($disabled{"sha"})
    || (defined($disabled{"rsa"})
        && (defined($disabled{"dsa"}) || defined($disabled{"dh"}))))
	{
	$disabled{"ssl3"} = "forced";
	$disabled{"tls1"} = "forced";
	}

if (defined($disabled{"dgram"}))
	{
        $disabled{"dtls"} = "forced";
        }

if (defined($disabled{"ec"}) || defined($disabled{"dsa"})
    || defined($disabled{"dh"}) || defined($disabled{"stdio"}))
	{
	$disabled{"gost"} = "forced";
	}


if ($target eq "TABLE") {
	foreach $target (sort keys %table) {
		print_table_entry($target, "TABLE");
	}
	exit 0;
}

if ($target eq "LIST") {
	foreach (sort keys %table) {
		print;
		print "\n";
	}
	exit 0;
}

if ($target eq "HASH") {
	print "%table = (\n";
	foreach (sort keys %table) {
		print_table_entry($_, "HASH");
	}
	exit 0;
}

if ($target =~ m/^CygWin32(-.*)$/) {
	$target = "Cygwin".$1;
}

print "Configuring for $target\n";

# Support for legacy targets having a name starting with 'debug-'
my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
if ($d) {
    $build_prefix = "debug_";

    # If we do not find debug-foo in the table, the target is set to foo,
    # but only if the foo target has a noon-empty debug_cflags or debug_lflags
    # attribute.
    if (!$table{$target}) {
	$target = $t;
    }
}

&usage if (!defined($table{$target}) || $table{$target}->{template});

if ($fips)
	{
	delete $disabled{"shared"} if ($disabled{"shared"} eq "default");
	}

foreach (sort (keys %disabled))
	{
	$options .= " no-$_";

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

	if (/^dso$/)
		{ $no_dso = 1; }
	elsif (/^threads$/)
		{ $no_threads = 1; }
	elsif (/^shared$/)
		{ $no_shared = 1; }
	elsif (/^zlib$/)
		{ $zlib = 0; }
	elsif (/^static-engine$/)
		{ }
	elsif (/^zlib-dynamic$/)
		{ }
	elsif (/^sse2$/)
		{ $no_sse2 = 1; }
	else
		{
		my ($ALGO, $algo);
		($ALGO = $algo = $_) =~ tr/[\-a-z]/[_A-Z]/;

		if (/^asm$/ || /^err$/ || /^hw$/ || /^hw-/)
			{
			$openssl_other_defines .= "#define OPENSSL_NO_$ALGO\n";
			print " OPENSSL_NO_$ALGO";

			if (/^err$/)	{ $flags .= "-DOPENSSL_NO_ERR "; }
			elsif (/^asm$/)	{ $no_asm = 1; }
			}
		else
			{
			($ALGO,$algo) = ("RMD160","rmd160") if ($algo eq "ripemd");

			$openssl_algorithm_defines .= "#define OPENSSL_NO_$ALGO\n";
			print " OPENSSL_NO_$ALGO";

			push @skip, $algo;
			# fix-up crypto/directory name(s)
			$skip[$#skip]="whrlpool" if $algo eq "whirlpool";
			$skip[$#skip]="ripemd" if $algo eq "rmd160";

			print " (skip dir)";

			$depflags .= " -DOPENSSL_NO_$ALGO";
			}
		}

	print "\n";
	}

my $exp_cflags = "";

foreach (sort @experimental)
	{
	my $ALGO;
	($ALGO = $_) =~ tr/[a-z]/[A-Z]/;

	# opensslconf.h will set OPENSSL_NO_... unless OPENSSL_EXPERIMENTAL_... is defined
	$openssl_experimental_defines .= "#define OPENSSL_NO_$ALGO\n";
	$exp_cflags .= " -DOPENSSL_EXPERIMENTAL_$ALGO";
	}

my $IsMK1MF=scalar grep /^$target$/,@MK1MF_Builds;

$exe_ext=".exe" if ($target eq "Cygwin" || $target eq "DJGPP" || $target =~ /^mingw/);
$exe_ext=".nlm" if ($target =~ /netware/);
$exe_ext=".pm"  if ($target =~ /vos/);
$openssldir="/usr/local/ssl" if ($openssldir eq "" and $prefix eq "");
$prefix=$openssldir if $prefix eq "";

$default_ranlib= &which("ranlib") or $default_ranlib="true";
$perl=$ENV{'PERL'} or $perl=&which("perl5") or $perl=&which("perl")
  or $perl="perl";
my $make = $ENV{'MAKE'} || "make";

$cross_compile_prefix=$ENV{'CROSS_COMPILE'} if $cross_compile_prefix eq "";

chop $openssldir if $openssldir =~ /\/$/;
chop $prefix if $prefix =~ /.\/$/;

$openssldir=$prefix . "/ssl" if $openssldir eq "";
$openssldir=$prefix . "/" . $openssldir if $openssldir !~ /(^\/|^[a-zA-Z]:[\\\/])/;


print "IsMK1MF=$IsMK1MF\n";

# Allow environment CC to override compiler...
my $cc = $ENV{CC} || $table{$target}->{cc};

# For cflags and lflags, add the debug_ or release_ attributes
# Do it in such a way that no spurious space is appended (hence the grep).
my $cflags = join(" ",
		  grep { $_ } ($table{$target}->{cflags},
			       $table{$target}->{$build_prefix."cflags"}));
my $lflags = join(" ",
		  grep { $_ } ($table{$target}->{lflags},
			       $table{$target}->{$build_prefix."lflags"}));

my $unistd = $table{$target}->{unistd};
my $thread_cflag = $table{$target}->{thread_cflag};
my $sys_id = $table{$target}->{sys_id};
my $bn_ops = $table{$target}->{bn_ops};
my $cpuid_obj = $table{$target}->{cpuid_obj};
my $bn_obj = $table{$target}->{bn_obj};
my $ec_obj = $table{$target}->{ec_obj};
my $des_obj = $table{$target}->{des_obj};
my $aes_obj = $table{$target}->{aes_obj};
my $bf_obj = $table{$target}->{bf_obj};
my $md5_obj = $table{$target}->{md5_obj};
my $sha1_obj = $table{$target}->{sha1_obj};
my $cast_obj = $table{$target}->{cast_obj};
my $rc4_obj = $table{$target}->{rc4_obj};
my $rmd160_obj = $table{$target}->{rmd160_obj};
my $rc5_obj = $table{$target}->{rc5_obj};
my $wp_obj = $table{$target}->{wp_obj};
my $cmll_obj = $table{$target}->{cmll_obj};
my $modes_obj = $table{$target}->{modes_obj};
my $engines_obj = $table{$target}->{engines_obj};
my $chacha_obj = $table{$target}->{chacha_obj};
my $poly1305_obj = $table{$target}->{poly1305_obj};
my $perlasm_scheme = $table{$target}->{perlasm_scheme};
my $dso_scheme = $table{$target}->{dso_scheme};
my $shared_target = $table{$target}->{shared_target};
my $shared_cflag = $table{$target}->{shared_cflag};
my $shared_ldflag = $table{$target}->{shared_ldflag};
my $shared_extension = $table{$target}->{shared_extension};
my $ranlib = $ENV{'RANLIB'} || $table{$target}->{ranlib};
my $ar = $ENV{'AR'} || "ar";
my $arflags = $table{$target}->{arflags};
my $multilib = $table{$target}->{multilib};

# if $prefix/lib$multilib is not an existing directory, then
# assume that it's not searched by linker automatically, in
# which case adding $multilib suffix causes more grief than
# we're ready to tolerate, so don't...
$multilib="" if !-d "$prefix/lib$multilib";

$libdir="lib$multilib" if $libdir eq "";

$cflags = "$cflags$exp_cflags";

# '%' in $lflags is used to split flags to "pre-" and post-flags
my ($prelflags,$postlflags)=split('%',$lflags);
if (defined($postlflags))	{ $lflags=$postlflags;	}
else				{ $lflags=$prelflags; undef $prelflags;	}

if ($target =~ /^mingw/ && `$cc --target-help 2>&1` !~ m/\-mno\-cygwin/m)
	{
	$cflags =~ s/\-mno\-cygwin\s*//;
	$shared_ldflag =~ s/\-mno\-cygwin\s*//;
	}

if ($target =~ /linux.*\-mips/ && !$no_asm && $flags !~ /\-m(ips|arch=)/) {
	# minimally required architecture flags for assembly modules
	$cflags="-mips2 $cflags" if ($target =~ /mips32/);
	$cflags="-mips3 $cflags" if ($target =~ /mips64/);
}

my $no_shared_warn=0;
my $no_user_cflags=0;

if ($flags ne "")	{ $cflags="$flags$cflags"; }
else			{ $no_user_cflags=1;       }

# 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;
my $dso_cflags;
if (!$no_dso && $dso_scheme ne "")
	{
	$dso_scheme =~ tr/[a-z]/[A-Z]/;
	if ($dso_scheme eq "DLFCN")
		{
		$dso_cflags = "-DDSO_DLFCN -DHAVE_DLFCN_H";
		}
	elsif ($dso_scheme eq "DLFCN_NO_H")
		{
		$dso_cflags = "-DDSO_DLFCN";
		}
	else
		{
		$dso_cflags = "-DDSO_$dso_scheme";
		}
	$cflags = "$dso_cflags $cflags";
	}

my $thread_cflags;
my $thread_defines;
if ($thread_cflag ne "(unknown)" && !$no_threads)
	{
	# If we know how to do it, support threads by default.
	$threads = 1;
	}
if ($thread_cflag eq "(unknown)" && $threads)
	{
	# If the user asked for "threads", [s]he is also expected to
	# provide any system-dependent compiler options that are
	# necessary.
	if ($no_user_cflags)
		{
		print "You asked for multi-threading support, but didn't\n";
		print "provide any system-specific compiler options\n";
		exit(1);
		}
	$thread_cflags="-DOPENSSL_THREADS $cflags" ;
	$thread_defines .= "#define OPENSSL_THREADS\n";
	}
else
	{
	$thread_cflags="-DOPENSSL_THREADS $thread_cflag $cflags";
	$thread_defines .= "#define OPENSSL_THREADS\n";
#	my $def;
#	foreach $def (split ' ',$thread_cflag)
#		{
#		if ($def =~ s/^-D// && $def !~ /^_/)
#			{
#			$thread_defines .= "#define $def\n";
#			}
#		}
	}

$lflags="$libs$lflags" if ($libs ne "");

if ($no_asm)
	{
	$cpuid_obj=$bn_obj=$ec_obj=
	$des_obj=$aes_obj=$bf_obj=$cast_obj=$rc4_obj=$rc5_obj=$cmll_obj=
	$modes_obj=$sha1_obj=$md5_obj=$rmd160_obj=$wp_obj=$engines_obj=
	$chacha_obj=$poly1305_obj="";
	$cflags=~s/\-D[BL]_ENDIAN//		if ($fips);
	$thread_cflags=~s/\-D[BL]_ENDIAN//	if ($fips);
	}
elsif (defined($disabled{ec2m}))
	{
	$bn_obj =~ s/\w+-gf2m.o//;
	}

if (!$no_shared)
	{
	$cast_obj="";	# CAST assembler is not PIC
	}

if ($threads)
	{
	$cflags=$thread_cflags;
	$openssl_thread_defines .= $thread_defines;
	}

if ($zlib)
	{
	$cflags = "-DZLIB $cflags";
	if (defined($disabled{"zlib-dynamic"}))
		{
		if (defined($withargs{"zlib-lib"}))
			{
			$lflags = "$lflags -L" . $withargs{"zlib-lib"} . " -lz";
			}
		else
			{
			$lflags = "$lflags -lz";
			}
		}
	else
		{
		$cflags = "-DZLIB_SHARED $cflags";
		}
	}

# With "deprecated" disable all deprecated features.
if (defined($disabled{"deprecated"})) {
        $api = $maxapi;
}

# You will find shlib_mark1 and shlib_mark2 explained in Makefile.in
my $shared_mark = "";
if ($shared_target eq "")
	{
	$no_shared_warn = 1 if !$no_shared && !$fips;
	$no_shared = 1;
	}
if (!$no_shared)
	{
	if ($shared_cflag ne "")
		{
		$cflags = "$shared_cflag -DOPENSSL_PIC $cflags";
		}
	}

if (!$IsMK1MF)
	{
	# add {no-}static-engine to options to allow mkdef.pl to work without extra arguments
	if ($no_shared)
		{
		$openssl_other_defines.="#define OPENSSL_NO_DYNAMIC_ENGINE\n";
		$options.=" static-engine";
		}
	else
		{
		$openssl_other_defines.="#define OPENSSL_NO_STATIC_ENGINE\n";
		$options.=" no-static-engine";
		}
	}

$cpuid_obj.=" uplink.o uplink-x86.o" if ($cflags =~ /\-DOPENSSL_USE_APPLINK/);

#
# Platform fix-ups
#
if ($target =~ /\-icc$/)	# Intel C compiler
	{
	my $iccver=0;
	if (open(FD,"$cc -V 2>&1 |"))
		{
		while(<FD>) { $iccver=$1 if (/Version ([0-9]+)\./); }
		close(FD);
		}
	if ($iccver>=8)
		{
		$cflags=~s/\-KPIC/-fPIC/;
		# Eliminate unnecessary dependency from libirc.a. This is
		# essential for shared library support, as otherwise
		# apps/openssl can end up in endless loop upon startup...
		$cflags.=" -Dmemcpy=__builtin_memcpy -Dmemset=__builtin_memset";
		}
	if ($iccver>=9)
		{
		$lflags.=" -i-static";
		$lflags=~s/\-no_cpprt/-no-cpprt/;
		}
	if ($iccver>=10)
		{
		$lflags=~s/\-i\-static/-static-intel/;
		}
	if ($iccver>=11)
		{
		$cflags.=" -no-intel-extensions";	# disable Cilk
		$lflags=~s/\-no\-cpprt/-no-cxxlib/;
		}
	}

# Unlike other OSes (like Solaris, Linux, Tru64, IRIX) BSD run-time
# linkers (tested OpenBSD, NetBSD and FreeBSD) "demand" RPATH set on
# .so objects. Apparently application RPATH is not global and does
# not apply to .so linked with other .so. Problem manifests itself
# when libssl.so fails to load libcrypto.so. One can argue that we
# should engrave this into Makefile.shared rules or into BSD-* config
# lines above. Meanwhile let's try to be cautious and pass -rpath to
# linker only when --prefix is not /usr.
if ($target =~ /^BSD\-/)
	{
	$shared_ldflag.=" -Wl,-rpath,\$(LIBRPATH)" if ($prefix !~ m|^/usr[/]*$|);
	}

if ($sys_id ne "")
	{
	#$cflags="-DOPENSSL_SYS_$sys_id $cflags";
	$openssl_sys_defines="#define OPENSSL_SYS_$sys_id\n";
	}

if ($ranlib eq "")
	{
	$ranlib = $default_ranlib;
	}

#my ($bn1)=split(/\s+/,$bn_obj);
#$bn1 = "" unless defined $bn1;
#$bn1=$bn_asm unless ($bn1 =~ /\.o$/);
#$bn_obj="$bn1";

$cpuid_obj="" if ($processor eq "386");

$bn_obj = $bn_asm unless $bn_obj ne "";
# bn-586 is the only one implementing bn_*_part_words
$cflags.=" -DOPENSSL_BN_ASM_PART_WORDS" if ($bn_obj =~ /bn-586/);
$cflags.=" -DOPENSSL_IA32_SSE2" if (!$no_sse2 && $bn_obj =~ /86/);

$cflags.=" -DOPENSSL_BN_ASM_MONT" if ($bn_obj =~ /-mont/);
$cflags.=" -DOPENSSL_BN_ASM_MONT5" if ($bn_obj =~ /-mont5/);
$cflags.=" -DOPENSSL_BN_ASM_GF2m" if ($bn_obj =~ /-gf2m/);

if ($fips)
	{
	$openssl_other_defines.="#define OPENSSL_FIPS\n";
	}

$cpuid_obj="mem_clr.o"	unless ($cpuid_obj =~ /\.o$/);
$des_obj=$des_enc	unless ($des_obj =~ /\.o$/);
$bf_obj=$bf_enc		unless ($bf_obj =~ /\.o$/);
$cast_obj=$cast_enc	unless ($cast_obj =~ /\.o$/);
$rc4_obj=$rc4_enc	unless ($rc4_obj =~ /\.o$/);
$rc5_obj=$rc5_enc	unless ($rc5_obj =~ /\.o$/);
if ($sha1_obj =~ /\.o$/)
	{
#	$sha1_obj=$sha1_enc;
	$cflags.=" -DSHA1_ASM"   if ($sha1_obj =~ /sx86/ || $sha1_obj =~ /sha1/);
	$cflags.=" -DSHA256_ASM" if ($sha1_obj =~ /sha256/);
	$cflags.=" -DSHA512_ASM" if ($sha1_obj =~ /sha512/);
	if ($sha1_obj =~ /sse2/)
	    {	if ($no_sse2)
		{   $sha1_obj =~ s/\S*sse2\S+//;        }
		elsif ($cflags !~ /OPENSSL_IA32_SSE2/)
		{   $cflags.=" -DOPENSSL_IA32_SSE2";    }
	    }
	}
if ($md5_obj =~ /\.o$/)
	{
#	$md5_obj=$md5_enc;
	$cflags.=" -DMD5_ASM";
	}
if ($rmd160_obj =~ /\.o$/)
	{
#	$rmd160_obj=$rmd160_enc;
	$cflags.=" -DRMD160_ASM";
	}
if ($aes_obj =~ /\.o$/)
	{
	$cflags.=" -DAES_ASM" if ($aes_obj =~ m/\baes\-/);;
	# aes-ctr.o is not a real file, only indication that assembler
	# module implements AES_ctr32_encrypt...
	$cflags.=" -DAES_CTR_ASM" if ($aes_obj =~ s/\s*aes\-ctr\.o//);
	# aes-xts.o indicates presence of AES_xts_[en|de]crypt...
	$cflags.=" -DAES_XTS_ASM" if ($aes_obj =~ s/\s*aes\-xts\.o//);
	$aes_obj =~ s/\s*(vpaes|aesni)\-x86\.o//g if ($no_sse2);
	$cflags.=" -DVPAES_ASM" if ($aes_obj =~ m/vpaes/);
	$cflags.=" -DBSAES_ASM" if ($aes_obj =~ m/bsaes/);
	}
else	{
	$aes_obj=$aes_enc;
	}
$wp_obj="" if ($wp_obj =~ /mmx/ && $processor eq "386");
if ($wp_obj =~ /\.o$/ && !$disabled{"whirlpool"})
	{
	$cflags.=" -DWHIRLPOOL_ASM";
	}
else	{
	$wp_obj="wp_block.o";
	}
$cmll_obj=$cmll_enc	unless ($cmll_obj =~ /.o$/);
if ($modes_obj =~ /ghash\-/)
	{
	$cflags.=" -DGHASH_ASM";
	}
if ($ec_obj =~ /ecp_nistz256/)
	{
	$cflags.=" -DECP_NISTZ256_ASM";
	}
$chacha_obj=$chacha_enc	unless ($chacha_obj =~ /\.o$/);
if ($poly1305_obj =~ /\.o$/)
	{
	$cflags.=" -DPOLY1305_ASM";
	}

# "Stringify" the C flags string.  This permits it to be made part of a string
# and works as well on command lines.
$cflags =~ s/([\\\"])/\\\1/g;

my $version = "unknown";
my $version_num = "unknown";
my $major = "unknown";
my $minor = "unknown";
my $shlib_version_number = "unknown";
my $shlib_version_history = "unknown";
my $shlib_major = "unknown";
my $shlib_minor = "unknown";

open(IN,'<include/openssl/opensslv.h') || die "unable to read opensslv.h:$!\n";
while (<IN>)
	{
	$version=$1 if /OPENSSL.VERSION.TEXT.*OpenSSL (\S+) /;
	$version_num=$1 if /OPENSSL.VERSION.NUMBER.*(0x\S+)/;
	$shlib_version_number=$1 if /SHLIB_VERSION_NUMBER *"([^"]+)"/;
	$shlib_version_history=$1 if /SHLIB_VERSION_HISTORY *"([^"]*)"/;
	}
close(IN);
if ($shlib_version_history ne "") { $shlib_version_history .= ":"; }

if ($version =~ /(^[0-9]*)\.([0-9\.]*)/)
	{
	$major=$1;
	$minor=$2;
	}

if ($shlib_version_number =~ /(^[0-9]*)\.([0-9\.]*)/)
	{
	$shlib_major=$1;
	$shlib_minor=$2;
	}

if (defined($api)) {
    my $apiflag = sprintf("-DOPENSSL_API_COMPAT=%s", $apitable->{$api});
    $default_depflags .= " $apiflag";
    $cflags .= " $apiflag";
}

my $ecc = $cc;
$ecc = "clang" if `$cc --version 2>&1` =~ /clang/;

if ($strict_warnings)
	{
	my $wopt;
	die "ERROR --strict-warnings requires gcc or clang" unless ($ecc =~ /gcc(-\d(\.\d)*)?$/ or $ecc =~ /clang$/);
	foreach $wopt (split /\s+/, $gcc_devteam_warn)
		{
		$cflags .= " $wopt" unless ($cflags =~ /(^|\s)$wopt(\s|$)/)
		}
	if ($ecc eq "clang")
		{
		foreach $wopt (split /\s+/, $clang_devteam_warn)
			{
			$cflags .= " $wopt" unless ($cflags =~ /(^|\s)$wopt(\s|$)/)
			}
		}
	if ($target !~ /^mingw/)
		{
		foreach $wopt (split /\s+/, $memleak_devteam_backtrace)
			{
			$cflags .= " $wopt" unless ($cflags =~ /(^|\s)$wopt(\s|$)/)
			}
                if ($target =~ /^BSD-/)
	                {
                        $lflags .= " -lexecinfo";
                        }
                }
	}

open(IN,"<Makefile.in") || die "unable to read Makefile.in$!\n";
unlink("$Makefile.new") || die "unable to remove old $Makefile.new:$!\n" if -e "$Makefile.new";
open(OUT,">$Makefile.new") || die "unable to create $Makefile.new:$!\n";
print OUT "### Generated automatically from Makefile.in by Configure.\n\n";
my $sdirs=0;

while (<IN>)
	{
	chomp;
	$sdirs = 1 if /^SDIRS=/;
	if ($sdirs) {
		my $dir;
		foreach $dir (@skip) {
			s/(\s)$dir /$1/;
			s/\s$dir$//;
			}
		}
	$sdirs = 0 unless /\\$/;
        s/fips // if (/^DIRS=/ && !$fips);
        s/engines // if (/^DIRS=/ && $disabled{"engine"});
	s/ccgost// if (/^ENGDIRS=/ && $disabled{"gost"});
	s/^VERSION=.*/VERSION=$version/;
	s/^MAJOR=.*/MAJOR=$major/;
	s/^MINOR=.*/MINOR=$minor/;
	s/^SHLIB_VERSION_NUMBER=.*/SHLIB_VERSION_NUMBER=$shlib_version_number/;
	s/^SHLIB_VERSION_HISTORY=.*/SHLIB_VERSION_HISTORY=$shlib_version_history/;
	s/^SHLIB_MAJOR=.*/SHLIB_MAJOR=$shlib_major/;
	s/^SHLIB_MINOR=.*/SHLIB_MINOR=$shlib_minor/;
	s/^SHLIB_EXT=.*/SHLIB_EXT=$shared_extension/;
	s/^INSTALLTOP=.*$/INSTALLTOP=$prefix/;
	s/^MULTILIB=.*$/MULTILIB=$multilib/;
	s/^OPENSSLDIR=.*$/OPENSSLDIR=$openssldir/;
	s/^LIBDIR=.*$/LIBDIR=$libdir/;
	s/^INSTALL_PREFIX=.*$/INSTALL_PREFIX=$install_prefix/;
	s/^PLATFORM=.*$/PLATFORM=$target/;
	s/^OPTIONS=.*$/OPTIONS=$options/;
	s/^CONFIGURE_ARGS=.*$/CONFIGURE_ARGS=$argvstring/;
	if ($cross_compile_prefix)
		{
		s/^CC=.*$/CROSS_COMPILE= $cross_compile_prefix\nCC= \$\(CROSS_COMPILE\)$cc/;
		s/^AR=\s*/AR= \$\(CROSS_COMPILE\)/;
		s/^NM=\s*/NM= \$\(CROSS_COMPILE\)/;
		s/^RANLIB=\s*/RANLIB= \$\(CROSS_COMPILE\)/;
		s/^MAKEDEPPROG=.*$/MAKEDEPPROG= \$\(CROSS_COMPILE\)$cc/ if $cc eq "gcc";
		}
	else	{
		s/^CC=.*$/CC= $cc/;
		s/^AR=\s*ar/AR= $ar/;
		s/^RANLIB=.*/RANLIB= $ranlib/;
		s/^MAKEDEPPROG=.*$/MAKEDEPPROG= $cc/ if $ecc eq "gcc" || $ecc eq "clang";
		}
	s/^CFLAG=.*$/CFLAG= $cflags/;
	s/^DEPFLAG=.*$/DEPFLAG=$depflags/;
	s/^PEX_LIBS=.*$/PEX_LIBS= $prelflags/;
	s/^EX_LIBS=.*$/EX_LIBS= $lflags/;
	s/^EXE_EXT=.*$/EXE_EXT= $exe_ext/;
	s/^CPUID_OBJ=.*$/CPUID_OBJ= $cpuid_obj/;
	s/^BN_ASM=.*$/BN_ASM= $bn_obj/;
	s/^EC_ASM=.*$/EC_ASM= $ec_obj/;
	s/^DES_ENC=.*$/DES_ENC= $des_obj/;
	s/^AES_ENC=.*$/AES_ENC= $aes_obj/;
	s/^BF_ENC=.*$/BF_ENC= $bf_obj/;
	s/^CAST_ENC=.*$/CAST_ENC= $cast_obj/;
	s/^RC4_ENC=.*$/RC4_ENC= $rc4_obj/;
	s/^RC5_ENC=.*$/RC5_ENC= $rc5_obj/;
	s/^MD5_ASM_OBJ=.*$/MD5_ASM_OBJ= $md5_obj/;
	s/^SHA1_ASM_OBJ=.*$/SHA1_ASM_OBJ= $sha1_obj/;
	s/^RMD160_ASM_OBJ=.*$/RMD160_ASM_OBJ= $rmd160_obj/;
	s/^WP_ASM_OBJ=.*$/WP_ASM_OBJ= $wp_obj/;
	s/^CMLL_ENC=.*$/CMLL_ENC= $cmll_obj/;
	s/^MODES_ASM_OBJ.=*$/MODES_ASM_OBJ= $modes_obj/;
	s/^CHACHA_ENC=.*$/CHACHA_ENC= $chacha_obj/;
	s/^POLY1305_ASM_OBJ=.*$/POLY1305_ASM_OBJ= $poly1305_obj/;
	s/^ENGINES_ASM_OBJ.=*$/ENGINES_ASM_OBJ= $engines_obj/;
	s/^PERLASM_SCHEME=.*$/PERLASM_SCHEME= $perlasm_scheme/;
	s/^PROCESSOR=.*/PROCESSOR= $processor/;
	s/^ARFLAGS=.*/ARFLAGS= $arflags/;
	s/^PERL=.*/PERL= $perl/;
	s/^LIBZLIB=.*/LIBZLIB=$withargs{"zlib-lib"}/;
	s/^ZLIB_INCLUDE=.*/ZLIB_INCLUDE=$withargs{"zlib-include"}/;
	s/^FIPSLIBDIR=.*/FIPSLIBDIR=$fipslibdir/;
	s/^FIPSCANLIB=.*/FIPSCANLIB=libcrypto/ if $fips;
	s/^SHARED_FIPS=.*/SHARED_FIPS=/;
	s/^SHLIBDIRS=.*/SHLIBDIRS= crypto ssl/;
	s/^BASEADDR=.*/BASEADDR=$baseaddr/;
	s/^SHLIB_TARGET=.*/SHLIB_TARGET=$shared_target/;
	s/^SHLIB_MARK=.*/SHLIB_MARK=$shared_mark/;
	s/^SHARED_LIBS=.*/SHARED_LIBS=\$(SHARED_CRYPTO) \$(SHARED_SSL)/ if (!$no_shared);
	if ($shared_extension ne "" && $shared_extension =~ /^\.s([ol])\.[^\.]*$/)
		{
		my $sotmp = $1;
		s/^SHARED_LIBS_LINK_EXTS=.*/SHARED_LIBS_LINK_EXTS=.s$sotmp/;
		}
	elsif ($shared_extension ne "" && $shared_extension =~ /^\.[^\.]*\.dylib$/)
		{
		s/^SHARED_LIBS_LINK_EXTS=.*/SHARED_LIBS_LINK_EXTS=.dylib/;
		}
	elsif ($shared_extension ne "" && $shared_extension =~ /^\.s([ol])\.[^\.]*\.[^\.]*$/)
		{
		my $sotmp = $1;
		s/^SHARED_LIBS_LINK_EXTS=.*/SHARED_LIBS_LINK_EXTS=.s$sotmp.\$(SHLIB_MAJOR) .s$sotmp/;
		}
	elsif ($shared_extension ne "" && $shared_extension =~ /^\.[^\.]*\.[^\.]*\.dylib$/)
		{
		s/^SHARED_LIBS_LINK_EXTS=.*/SHARED_LIBS_LINK_EXTS=.\$(SHLIB_MAJOR).dylib .dylib/;
		}
	s/^SHARED_LDFLAGS=.*/SHARED_LDFLAGS=$shared_ldflag/;
	print OUT $_."\n";
	}
close(IN);
close(OUT);
rename($Makefile,"$Makefile.orig") || die "unable to rename $Makefile\n" if -e $Makefile;
rename("$Makefile.new",$Makefile) || die "unable to rename $Makefile.new\n";

print "CC            =$cc\n";
print "CFLAG         =$cflags\n";
print "EX_LIBS       =$lflags\n";
print "CPUID_OBJ     =$cpuid_obj\n";
print "BN_ASM        =$bn_obj\n";
print "EC_ASM        =$ec_obj\n";
print "DES_ENC       =$des_obj\n";
print "AES_ENC       =$aes_obj\n";
print "BF_ENC        =$bf_obj\n";
print "CAST_ENC      =$cast_obj\n";
print "RC4_ENC       =$rc4_obj\n";
print "RC5_ENC       =$rc5_obj\n";
print "MD5_OBJ_ASM   =$md5_obj\n";
print "SHA1_OBJ_ASM  =$sha1_obj\n";
print "RMD160_OBJ_ASM=$rmd160_obj\n";
print "CMLL_ENC      =$cmll_obj\n";
print "MODES_OBJ     =$modes_obj\n";
print "ENGINES_OBJ   =$engines_obj\n";
print "CHACHA_ENC    =$chacha_obj\n";
print "POLY1305_OBJ  =$poly1305_obj\n";
print "PROCESSOR     =$processor\n";
print "RANLIB        =$ranlib\n";
print "ARFLAGS       =$arflags\n";
print "PERL          =$perl\n";

my $des_ptr=0;
my $des_risc1=0;
my $des_risc2=0;
my $des_unroll=0;
my $bn_ll=0;
my $def_int=2;
my $rc4_int=$def_int;
my $md2_int=$def_int;
my $idea_int=$def_int;
my $rc2_int=$def_int;
my $rc4_idx=0;
my $rc4_chunk=0;
my $bf_ptr=0;
my @type=("char","short","int","long");
my ($b64l,$b64,$b32,$b16,$b8)=(0,0,1,0,0);
my $export_var_as_fn=0;

my $des_int;

foreach (sort split(/\s+/,$bn_ops))
	{
	$des_ptr=1 if /DES_PTR/;
	$des_risc1=1 if /DES_RISC1/;
	$des_risc2=1 if /DES_RISC2/;
	$des_unroll=1 if /DES_UNROLL/;
	$des_int=1 if /DES_INT/;
	$bn_ll=1 if /BN_LLONG/;
	$rc4_int=0 if /RC4_CHAR/;
	$rc4_int=3 if /RC4_LONG/;
	$rc4_idx=1 if /RC4_INDEX/;
	$rc4_chunk=1 if /RC4_CHUNK/;
	$rc4_chunk=2 if /RC4_CHUNK_LL/;
	$md2_int=0 if /MD2_CHAR/;
	$md2_int=3 if /MD2_LONG/;
	$idea_int=1 if /IDEA_SHORT/;
	$idea_int=3 if /IDEA_LONG/;
	$rc2_int=1 if /RC2_SHORT/;
	$rc2_int=3 if /RC2_LONG/;
	$bf_ptr=1 if $_ eq "BF_PTR";
	$bf_ptr=2 if $_ eq "BF_PTR2";
	($b64l,$b64,$b32,$b16,$b8)=(0,1,0,0,0) if /SIXTY_FOUR_BIT/;
	($b64l,$b64,$b32,$b16,$b8)=(1,0,0,0,0) if /SIXTY_FOUR_BIT_LONG/;
	($b64l,$b64,$b32,$b16,$b8)=(0,0,1,0,0) if /THIRTY_TWO_BIT/;
	($b64l,$b64,$b32,$b16,$b8)=(0,0,0,1,0) if /SIXTEEN_BIT/;
	($b64l,$b64,$b32,$b16,$b8)=(0,0,0,0,1) if /EIGHT_BIT/;
	$export_var_as_fn=1 if /EXPORT_VAR_AS_FN/;
	}

open(IN,'<crypto/opensslconf.h.in') || die "unable to read crypto/opensslconf.h.in:$!\n";
unlink("include/openssl/opensslconf.h.new") || die "unable to remove old include/openssl/opensslconf.h.new:$!\n" if -e "include/openssl/opensslconf.h.new";
open(OUT,'>include/openssl/opensslconf.h.new') || die "unable to create include/openssl/opensslconf.h.new:$!\n";
print OUT "/* opensslconf.h */\n";
print OUT "/* WARNING: Generated automatically from opensslconf.h.in by Configure. */\n\n";

print OUT "#ifdef  __cplusplus\n";
print OUT "extern \"C\" {\n";
print OUT "#endif\n";
print OUT "/* OpenSSL was configured with the following options: */\n";

my $openssl_api_defines = "";
if (defined($api)) {
    $openssl_api_defines = sprintf "#define OPENSSL_MIN_API %s\n", $apitable->{$api};
}
my $openssl_algorithm_defines_trans = $openssl_algorithm_defines;
$openssl_experimental_defines =~ s/^\s*#\s*define\s+OPENSSL_NO_(.*)/#ifndef OPENSSL_EXPERIMENTAL_$1\n# ifndef OPENSSL_NO_$1\n#  define OPENSSL_NO_$1\n# endif\n#endif/mg;
$openssl_algorithm_defines_trans =~ s/^\s*#\s*define\s+OPENSSL_(.*)/# if defined(OPENSSL_$1) \&\& !defined($1)\n#  define $1\n# endif/mg;
$openssl_algorithm_defines =~ s/^\s*#\s*define\s+(.*)/#ifndef $1\n# define $1\n#endif/mg;
$openssl_algorithm_defines = "   /* no ciphers excluded */\n" if $openssl_algorithm_defines eq "";
$openssl_thread_defines =~ s/^\s*#\s*define\s+(.*)/#ifndef $1\n# define $1\n#endif/mg;
$openssl_sys_defines =~ s/^\s*#\s*define\s+(.*)/#ifndef $1\n# define $1\n#endif/mg;
$openssl_other_defines =~ s/^\s*#\s*define\s+(.*)/#ifndef $1\n# define $1\n#endif/mg;

print OUT $openssl_sys_defines;
print OUT "#ifndef OPENSSL_DOING_MAKEDEPEND\n\n";
print OUT $openssl_experimental_defines;
print OUT $openssl_api_defines;
print OUT "\n";
print OUT $openssl_algorithm_defines;
print OUT "\n#endif /* OPENSSL_DOING_MAKEDEPEND */\n\n";
print OUT $openssl_thread_defines;
print OUT $openssl_other_defines,"\n";

print OUT "/* The OPENSSL_NO_* macros are also defined as NO_* if the application\n";
print OUT "   asks for it.  This is a transient feature that is provided for those\n";
print OUT "   who haven't had the time to do the appropriate changes in their\n";
print OUT "   applications.  */\n";
print OUT "#ifdef OPENSSL_ALGORITHM_DEFINES\n";
print OUT $openssl_algorithm_defines_trans;
print OUT "#endif\n\n";

print OUT "#define OPENSSL_CPUID_OBJ\n\n" if ($cpuid_obj ne "mem_clr.o");

while (<IN>)
	{
	if	(/^#define\s+OPENSSLDIR/)
		{
		my $foo = $openssldir;
		$foo =~ s/\\/\\\\/g;
		print OUT "#define OPENSSLDIR \"$foo\"\n";
		}
	elsif	(/^#define\s+ENGINESDIR/)
		{
		my $foo = "$prefix/$libdir/engines";
		$foo =~ s/\\/\\\\/g;
		print OUT "#define ENGINESDIR \"$foo\"\n";
		}
	elsif	(/^#((define)|(undef))\s+OPENSSL_EXPORT_VAR_AS_FUNCTION/)
		{ printf OUT "#undef OPENSSL_EXPORT_VAR_AS_FUNCTION\n"
			if $export_var_as_fn;
		  printf OUT "#%s OPENSSL_EXPORT_VAR_AS_FUNCTION\n",
			($export_var_as_fn)?"define":"undef"; }
	elsif	(/^#define\s+OPENSSL_UNISTD/)
		{
		$unistd = "<unistd.h>" if $unistd eq "";
		print OUT "#define OPENSSL_UNISTD $unistd\n";
		}
	elsif	(/^#((define)|(undef))\s+SIXTY_FOUR_BIT_LONG/)
		{ printf OUT "#%s SIXTY_FOUR_BIT_LONG\n",($b64l)?"define":"undef"; }
	elsif	(/^#((define)|(undef))\s+SIXTY_FOUR_BIT/)
		{ printf OUT "#%s SIXTY_FOUR_BIT\n",($b64)?"define":"undef"; }
	elsif	(/^#((define)|(undef))\s+THIRTY_TWO_BIT/)
		{ printf OUT "#%s THIRTY_TWO_BIT\n",($b32)?"define":"undef"; }
	elsif	(/^#((define)|(undef))\s+SIXTEEN_BIT/)
		{ printf OUT "#%s SIXTEEN_BIT\n",($b16)?"define":"undef"; }
	elsif	(/^#((define)|(undef))\s+EIGHT_BIT/)
		{ printf OUT "#%s EIGHT_BIT\n",($b8)?"define":"undef"; }
	elsif	(/^#((define)|(undef))\s+BN_LLONG\s*$/)
		{ printf OUT "#%s BN_LLONG\n",($bn_ll)?"define":"undef"; }
	elsif	(/^\#define\s+OSSL_DES_LONG\s+.*/)
		{ printf OUT "#define OSSL_DES_LONG unsigned %s\n",
			($des_int)?'int':'long'; }
	elsif	(/^\#(define|undef)\s+DES_PTR/)
		{ printf OUT "#%s DES_PTR\n",($des_ptr)?'define':'undef'; }
	elsif	(/^\#(define|undef)\s+DES_RISC1/)
		{ printf OUT "#%s DES_RISC1\n",($des_risc1)?'define':'undef'; }
	elsif	(/^\#(define|undef)\s+DES_RISC2/)
		{ printf OUT "#%s DES_RISC2\n",($des_risc2)?'define':'undef'; }
	elsif	(/^\#(define|undef)\s+DES_UNROLL/)
		{ printf OUT "#%s DES_UNROLL\n",($des_unroll)?'define':'undef'; }
	elsif	(/^#define\s+RC4_INT\s/)
		{ printf OUT "#define RC4_INT unsigned %s\n",$type[$rc4_int]; }
	elsif	(/^#undef\s+RC4_CHUNK/)
		{
		printf OUT "#undef RC4_CHUNK\n" if $rc4_chunk==0;
		printf OUT "#define RC4_CHUNK unsigned long\n" if $rc4_chunk==1;
		printf OUT "#define RC4_CHUNK unsigned long long\n" if $rc4_chunk==2;
		}
	elsif	(/^#((define)|(undef))\s+RC4_INDEX/)
		{ printf OUT "#%s RC4_INDEX\n",($rc4_idx)?"define":"undef"; }
	elsif (/^#(define|undef)\s+I386_ONLY/)
		{ printf OUT "#%s I386_ONLY\n", ($processor eq "386")?
			"define":"undef"; }
	elsif	(/^#define\s+MD2_INT\s/)
		{ printf OUT "#define MD2_INT unsigned %s\n",$type[$md2_int]; }
	elsif	(/^#define\s+IDEA_INT\s/)
		{printf OUT "#define IDEA_INT unsigned %s\n",$type[$idea_int];}
	elsif	(/^#define\s+RC2_INT\s/)
		{printf OUT "#define RC2_INT unsigned %s\n",$type[$rc2_int];}
	elsif (/^#(define|undef)\s+BF_PTR/)
		{
		printf OUT "#undef BF_PTR\n" if $bf_ptr == 0;
		printf OUT "#define BF_PTR\n" if $bf_ptr == 1;
		printf OUT "#define BF_PTR2\n" if $bf_ptr == 2;
	        }
	else
		{ print OUT $_; }
	}
close(IN);
print OUT "#ifdef  __cplusplus\n";
print OUT "}\n";
print OUT "#endif\n";
close(OUT);
rename("include/openssl/opensslconf.h","include/openssl/opensslconf.h.bak") || die "unable to rename include/openssl/opensslconf.h\n" if -e "include/openssl/opensslconf.h";
rename("include/openssl/opensslconf.h.new","include/openssl/opensslconf.h") || die "unable to rename include/openssl/opensslconf.h.new\n";


# Fix the date

print "SIXTY_FOUR_BIT_LONG mode\n" if $b64l;
print "SIXTY_FOUR_BIT mode\n" if $b64;
print "THIRTY_TWO_BIT mode\n" if $b32;
print "SIXTEEN_BIT mode\n" if $b16;
print "EIGHT_BIT mode\n" if $b8;
print "DES_PTR used\n" if $des_ptr;
print "DES_RISC1 used\n" if $des_risc1;
print "DES_RISC2 used\n" if $des_risc2;
print "DES_UNROLL used\n" if $des_unroll;
print "DES_INT used\n" if $des_int;
print "BN_LLONG mode\n" if $bn_ll;
print "RC4 uses u$type[$rc4_int]\n" if $rc4_int != $def_int;
print "RC4_INDEX mode\n" if $rc4_idx;
print "RC4_CHUNK is undefined\n" if $rc4_chunk==0;
print "RC4_CHUNK is unsigned long\n" if $rc4_chunk==1;
print "RC4_CHUNK is unsigned long long\n" if $rc4_chunk==2;
print "MD2 uses u$type[$md2_int]\n" if $md2_int != $def_int;
print "IDEA uses u$type[$idea_int]\n" if $idea_int != $def_int;
print "RC2 uses u$type[$rc2_int]\n" if $rc2_int != $def_int;
print "BF_PTR used\n" if $bf_ptr == 1;
print "BF_PTR2 used\n" if $bf_ptr == 2;

# Copy all Makefile.in to Makefile (except top-level)
use File::Find;
use IO::File;
find(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;
    }, ".");

{
    my $perlguess = $perl =~ m@^/@ ? $perl : '/usr/local/bin/perl';

    &dofile("tools/c_rehash",$perlguess,
	    '^#!/'		=> '#!%s',
	    '^my \$dir;$'	=> 'my $dir = "' . $openssldir . '";',
	    '^my \$prefix;$'	=> 'my $prefix = "' . $prefix . '";');
    &dofile("apps/CA.pl",$perl,
	    '^#!/'		=> '#!%s');
}
if($IsMK1MF) {
	open (OUT,">crypto/buildinf.h") || die "Can't open buildinf.h";
	printf OUT <<EOF;
#ifndef MK1MF_BUILD
  /* auto-generated by Configure for crypto/cversion.c:
   * for Unix builds, crypto/Makefile.ssl generates functional definitions;
   * Windows builds (and other mk1mf builds) compile cversion.c with
   * -DMK1MF_BUILD and use definitions added to this file by util/mk1mf.pl. */
  #error "Windows builds (PLATFORM=$target) use mk1mf.pl-created Makefiles"
#endif
EOF
	close(OUT);
} else {
	my $make_command = "$make PERL=\'$perl\'";
	my $make_targets = "";
	$make_targets .= " depend" if $depflags ne $default_depflags && $make_depend;
	(system $make_command.$make_targets) == 0 or die "make $make_targets failed"
		if $make_targets ne "";
	if ($depflags ne $default_depflags && !$make_depend) {
            $warn_make_depend++;
        }
}

# create the ms/version32.rc file if needed
if ($IsMK1MF && ($target !~ /^netware/)) {
	my ($v1, $v2, $v3, $v4);
	if ($version_num =~ /^0x([0-9a-f]{1})([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{1})L$/i) {
		$v1=hex $1;
		$v2=hex $2;
		$v3=hex $3;
		$v4=hex $4;
	}
	open (OUT,">ms/version32.rc") || die "Can't open ms/version32.rc";
	print OUT <<EOF;
#include <winver.h>

LANGUAGE 0x09,0x01

1 VERSIONINFO
  FILEVERSION $v1,$v2,$v3,$v4
  PRODUCTVERSION $v1,$v2,$v3,$v4
  FILEFLAGSMASK 0x3fL
#ifdef _DEBUG
  FILEFLAGS 0x01L
#else
  FILEFLAGS 0x00L
#endif
  FILEOS VOS__WINDOWS32
  FILETYPE VFT_DLL
  FILESUBTYPE 0x0L
BEGIN
    BLOCK "StringFileInfo"
    BEGIN
	BLOCK "040904b0"
	BEGIN
	    // Required:
	    VALUE "CompanyName", "The OpenSSL Project, http://www.openssl.org/\\0"
	    VALUE "FileDescription", "OpenSSL Shared Library\\0"
	    VALUE "FileVersion", "$version\\0"
#if defined(CRYPTO)
	    VALUE "InternalName", "libeay32\\0"
	    VALUE "OriginalFilename", "libeay32.dll\\0"
#elif defined(SSL)
	    VALUE "InternalName", "ssleay32\\0"
	    VALUE "OriginalFilename", "ssleay32.dll\\0"
#endif
	    VALUE "ProductName", "The OpenSSL Toolkit\\0"
	    VALUE "ProductVersion", "$version\\0"
	    // Optional:
	    //VALUE "Comments", "\\0"
	    VALUE "LegalCopyright", "Copyright © 1998-2015 The OpenSSL Project. Copyright © 1995-1998 Eric A. Young, Tim J. Hudson. All rights reserved.\\0"
	    //VALUE "LegalTrademarks", "\\0"
	    //VALUE "PrivateBuild", "\\0"
	    //VALUE "SpecialBuild", "\\0"
	END
    END
    BLOCK "VarFileInfo"
    BEGIN
        VALUE "Translation", 0x409, 0x4b0
    END
END
EOF
	close(OUT);
  }

print <<EOF;

Configured for $target.
EOF

print <<\EOF if (!$no_threads && !$threads);

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

print <<\EOF if ($no_shared_warn);

You gave the option 'shared', which is not supported on this platform, so
we will pretend you gave the option 'no-shared'.  If you know how to implement
shared libraries, please let us know (but please first make sure you have
tried with a current version of OpenSSL).
EOF

print <<EOF if ($warn_make_depend);

*** Because of configuration changes, you MUST do the following before
*** building:

	make depend
EOF

exit(0);

sub usage
	{
	print STDERR $usage;
	print STDERR "\npick os/compiler from:\n";
	my $j=0;
	my $i;
        my $k=0;
	foreach $i (sort keys %table)
		{
		next if $i =~ /^debug/;
		$k += length($i) + 1;
		if ($k > 78)
			{
			print STDERR "\n";
			$k=length($i);
			}
		print STDERR $i . " ";
		}
	foreach $i (sort keys %table)
		{
		next if $i !~ /^debug/;
		$k += length($i) + 1;
		if ($k > 78)
			{
			print STDERR "\n";
			$k=length($i);
			}
		print STDERR $i . " ";
		}
	print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
	exit(1);
	}

sub which
	{
	my($name)=@_;
	my $path;
	foreach $path (split /:/, $ENV{PATH})
		{
		if (-f "$path/$name$exe_ext" and -x _)
			{
			return "$path/$name$exe_ext" unless ($name eq "perl" and
			 system("$path/$name$exe_ext -e " . '\'exit($]<5.0);\''));
			}
		}
	}

sub dofile
	{
	my $f; my $p; my %m; my @a; my $k; my $ff;
	($f,$p,%m)=@_;

	open(IN,"<$f.in") || open(IN,"<$f") || die "unable to open $f:$!\n";
	@a=<IN>;
	close(IN);
	foreach $k (keys %m)
		{
		grep(/$k/ && ($_=sprintf($m{$k}."\n",$p)),@a);
		}
	open(OUT,">$f.new") || die "unable to open $f.new:$!\n";
	print OUT @a;
	close(OUT);
	rename($f,"$f.bak") || die "unable to rename $f\n" if -e $f;
	rename("$f.new",$f) || die "unable to rename $f.new\n";
	}

sub print_table_entry
	{
	my $target = shift;
	my $type = shift;

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

	if ($type eq "TABLE") {
	    print <<EOF

*** $target
\$cc           = $table{$target}->{cc}
\$cflags       = $table{$target}->{cflags}
\$debug_cflags   = $table{$target}->{debug_cflags}
\$release_cflags = $table{$target}->{release_cflags}
\$unistd       = $table{$target}->{unistd}
\$thread_cflag = $table{$target}->{thread_cflag}
\$sys_id       = $table{$target}->{sys_id}
\$lflags       = $table{$target}->{lflags}
\$debug_lflags   = $table{$target}->{debug_lflags}
\$release_lflags = $table{$target}->{release_lflags}
\$bn_ops       = $table{$target}->{bn_ops}
\$cpuid_obj    = $table{$target}->{cpuid_obj}
\$bn_obj       = $table{$target}->{bn_obj}
\$ec_obj       = $table{$target}->{ec_obj}
\$des_obj      = $table{$target}->{des_obj}
\$aes_obj      = $table{$target}->{aes_obj}
\$bf_obj       = $table{$target}->{bf_obj}
\$md5_obj      = $table{$target}->{md5_obj}
\$sha1_obj     = $table{$target}->{sha1_obj}
\$cast_obj     = $table{$target}->{cast_obj}
\$rc4_obj      = $table{$target}->{rc4_obj}
\$rmd160_obj   = $table{$target}->{rmd160_obj}
\$rc5_obj      = $table{$target}->{rc5_obj}
\$wp_obj       = $table{$target}->{wp_obj}
\$cmll_obj     = $table{$target}->{cmll_obj}
\$modes_obj    = $table{$target}->{modes_obj}
\$engines_obj  = $table{$target}->{engines_obj}
\$chacha_obj   = $table{$target}->{chacha_obj}
\$poly1305_obj = $table{$target}->{poly1305_obj}
\$perlasm_scheme = $table{$target}->{perlasm_scheme}
\$dso_scheme   = $table{$target}->{dso_scheme}
\$shared_target= $table{$target}->{shared_target}
\$shared_cflag = $table{$target}->{shared_cflag}
\$shared_ldflag = $table{$target}->{shared_ldflag}
\$shared_extension = $table{$target}->{shared_extension}
\$ranlib       = $table{$target}->{ranlib}
\$arflags      = $table{$target}->{arflags}
\$multilib     = $table{$target}->{multilib}
EOF
	} elsif ($type eq "HASH") {
	    my @sequence = (
		"cc",
		"cflags",
		"debug_cflags",
		"release_cflags",
		"unistd",
		"thread_cflag",
		"sys_id",
		"lflags",
		"debug_lflags",
		"release_lflags",
		"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",
		"engines_obj",
		"chacha_obj",
		"poly1305_obj",
		"perlasm_scheme",
		"dso_scheme",
		"shared_target",
		"shared_cflag",
		"shared_ldflag",
		"shared_extension",
		"ranlib",
		"arflags",
		"multilib",
		);
	    my $largest =
		length((sort { length($a) <=> length($b) } @sequence)[-1]);
	    print "    '$target' => {\n";
	    foreach (@sequence) {
		if ($table{$target}->{$_}) {
		    print "      '",$_,"'"," " x ($largest - length($_))," => '",$table{$target}->{$_},"',\n";
		}
	    }
	    print "    },\n";
	}
	}

sub test_sanity
	{
	my $errorcnt = 0;

	print STDERR "=" x 70, "\n";
	print STDERR "=== SANITY TESTING!\n";
	print STDERR "=== No configuration will be done, all other arguments will be ignored!\n";
	print STDERR "=" x 70, "\n";

	foreach $target (sort keys %table)
		{
		my $pre_dso_scheme = "perlasm_scheme";
		my $dso_scheme = "dso_scheme";
		my $post_dso_scheme = "shared_target";


		if ($table{$target}->{$pre_dso_scheme} =~ /^(beos|dl|dlfcn|win32|vms)$/)
			{
			$errorcnt++;
			print STDERR "SANITY ERROR: '$target' has the dso_scheme values\n";
			print STDERR "              in the previous field\n";
			}
		elsif ($table{$target}->{$post_dso_scheme} =~ /^(beos|dl|dlfcn|win32|vms)$/)
			{
			$errorcnt++;
			print STDERR "SANITY ERROR: '$target' has the dso_scheme values\n";
			print STDERR "              in the following field\n";
			}
		elsif ($table{$target}->{$dso_scheme} !~ /^(beos|dl|dlfcn|win32|vms|)$/)
			{
			$errorcnt++;
			print STDERR "SANITY ERROR: '$target' has the dso_scheme field = ",$table{$target}->{$dso_scheme},"\n";
			print STDERR "              valid values are 'beos', 'dl', 'dlfcn', 'win32' and 'vms'\n";
			}
		}
	print STDERR "No sanity errors detected!\n" if $errorcnt == 0;
	return $errorcnt;
	}