Refresh the thinking of --prefix and --openssldir

[openssl.git] / 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]] [--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.
# --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)
#
# --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".
#
# --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";

# 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 comes in the form of 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 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 => ""
#       }
#

our %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
    },
);

# Forward declarations ###############################################

# read_config(filename)
#
# Reads a configuration file and populates %table with the contents
# (which the configuration file places in %targets).
sub read_config;

# resolve_config(target)
#
# Resolves all the late evalutations, inheritances and so on for the
# chosen target and any target it inherits from.
sub resolve_config;


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;

# Known TLS and DTLS protocols
my @tls = qw(ssl3 tls1 tls1_1 tls1_2);
my @dtls = qw(dtls1 dtls1_2);

# 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",
    "ecdh",
    "ecdsa",
    "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",
    "ssl-trace",
    "static-engine",
    "stdio",
    "store",
    "threads",
    "tls",
    "unit-test",
    "whirlpool",
    "zlib",
    "zlib-dynamic",
    );
foreach my $proto ((@tls, @dtls))
        {
        push(@disablables, $proto);
        push(@disablables, "$proto-method");
        }

# 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 = ();

# Note: => pair form used for aesthetics, not to truly make a hash table
my @disable_cascades = (
    # "what"            => [ "cascade", ... ]
    sub { $processor eq "386" }
                        => [ "sse2" ],
    "ssl"               => [ "ssl3" ],
    "ssl3-method"       => [ "ssl3" ],
    "zlib"              => [ "zlib-dynamic" ],
    "rijndael"          => [ "aes" ],
    "des"               => [ "mdc2" ],
    "ec"                => [ "ecdsa", "ecdh", "gost" ],
    "dsa"               => [ "gost" ],
    "dh"                => [ "gost" ],

    "dgram"             => [ "dtls" ],
    "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" ],
    );

# 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;
}

# Construct the string of what $depflags should look like with the defaults
# from %disabled above.  (we need this to see if we should advise the user
# to run "make depend"):
my $default_depflags = " ".join(" ",
    map { my $x = $_; $x =~ tr{[a-z]-}{[A-Z]_}; "-DOPENSSL_NO_$x"; }
    grep { $disabled{$_} !~ /\(no-depflags\)$/ }
    sort keys %disabled);

# 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;

if (grep /^reconf(igure)?$/, @argvcopy) {
    if (open IN, "<$Makefile") {
        while (<IN>) {
            chomp;
            if (/^CONFIGURE_ARGS=\s*(.*)\s*/) {
                my $line = $1;
                if ($line =~ /^\s*\(/) {
                    # New form perl expression saved in Makefile, eval it
                    @argvcopy = eval $line;
                } else {
                    # Older form, we split the string and hope for the best
                    @argvcopy = split /\s+/, $line;
                }
                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}=$1;
            }
        }
        print "Reconfiguring with: ", join(" ",@argvcopy), "\n";
        print "    CROSS_COMPILE = ",$ENV{CROSS_COMPILE},"\n"
            if $ENV{CROSS_COMPILE};
        print "    CC = ",$ENV{CC},"\n" if $ENV{CC};
        close IN;
    } else {
        die "Insufficient data to reconfigure, please do a normal configuration\n";
    }
}


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"))
                        {
                        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)";
                                        }
                                }
                        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)";
                                        }
                                }
                        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 (/^--strict-warnings$/)
                {
                $strict_warnings = 1;
                }
        elsif (/^--debug$/)
                {
                $build_prefix = "debug_";
                }
        elsif (/^--release$/)
                {
                $build_prefix = "release_";
                }
        elsif (/^386$/)
                { $processor=386; }
        elsif (/^fips$/)
                {
                $fips=1;
                }
        elsif (/^rsaref$/)
                {
                # 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 ($fips)
        {
        delete $disabled{"shared"} if ($disabled{"shared"} =~ /^default/);
        }

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})) {
            map {
                $new_tocheckfor{$_} => 1; $disabled{$_} = "forced";
            } grep { !defined($disabled{$_}) } @$descendents;
        }
    }
    @tocheckfor = (keys %new_tocheckfor);
}

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 = $t;
    }
}
my %target = resolve_config($target);

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

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/);

$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 "";

$prefix = "/usr/local" if !$prefix;
$openssldir = "ssl" if !$openssldir;
$openssldir = catdir($prefix, $openssldir)
    unless file_name_is_absolute($openssldir);


print "IsMK1MF=$IsMK1MF\n";

# Allow environment CC to override compiler...
my $cc = $ENV{CC} || $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 { $_ } ($target{cflags},
                               $target{$build_prefix."cflags"}));
my $lflags = join(" ",
                  grep { $_ } ($target{lflags},
                               $target{$build_prefix."lflags"}));

my $unistd = $target{unistd};
my $thread_cflag = $target{thread_cflag};
my $sys_id = $target{sys_id};
my $bn_ops = $target{bn_ops};
my $cpuid_obj = $target{cpuid_obj};
my $bn_obj = $target{bn_obj};
my $ec_obj = $target{ec_obj};
my $des_obj = $target{des_obj};
my $aes_obj = $target{aes_obj};
my $bf_obj = $target{bf_obj};
my $md5_obj = $target{md5_obj};
my $sha1_obj = $target{sha1_obj};
my $cast_obj = $target{cast_obj};
my $rc4_obj = $target{rc4_obj};
my $rmd160_obj = $target{rmd160_obj};
my $rc5_obj = $target{rc5_obj};
my $wp_obj = $target{wp_obj};
my $cmll_obj = $target{cmll_obj};
my $modes_obj = $target{modes_obj};
my $engines_obj = $target{engines_obj};
my $chacha_obj = $target{chacha_obj};
my $poly1305_obj = $target{poly1305_obj};
my $perlasm_scheme = $target{perlasm_scheme};
my $dso_scheme = $target{dso_scheme};
my $shared_target = $target{shared_target};
my $shared_cflag = $target{shared_cflag};
my $shared_ldflag = $target{shared_ldflag};
my $shared_extension = $target{shared_extension};
my $ranlib = $ENV{'RANLIB'} || $target{ranlib};
my $ar = $ENV{'AR'} || "ar";
my $arflags = $target{arflags};
my $multilib = $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=/ && $disabled{"engine"});
        s/^VERSION=.*/VERSION=$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/;
        my $argvstring = "(".join(", ", map { quotify("perl", $_) } @argvcopy).")";
        s/^CONFIGURE_ARGS=.*$/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);

######################################################################
#
# Helpers and utility functions
#

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

# Helper function to implement conditional inheritance depending on the
# value of $no_asm.  Used in inherit_from values as follows:
#
#      inherit_from => [ "template", asm("asm_tmpl") ]
#
sub asm {
    my @x = @_;
    sub {
        $no_asm ? () : @x;
    }
}

# 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);

}

# configuration resolver.  Will only resolve all the lazy evalutation
# codeblocks for the chozen target and all those it inherits from,
# recursively
sub resolve_config {
    my $target = shift;
    my @breadcrumbs = @_;

    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};

            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.
    return %{$table{$target}};
}

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 $table{$i}->{template};
                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 $table{$i}->{template};
                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 $target = shift;
        my %target = resolve_config($target);
        my $type = shift;

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

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

*** $target
\$cc           = $target{cc}
\$cflags       = $target{cflags}
\$debug_cflags   = $target{debug_cflags}
\$release_cflags = $target{release_cflags}
\$unistd       = $target{unistd}
\$thread_cflag = $target{thread_cflag}
\$sys_id       = $target{sys_id}
\$lflags       = $target{lflags}
\$debug_lflags   = $target{debug_lflags}
\$release_lflags = $target{release_lflags}
\$bn_ops       = $target{bn_ops}
\$cpuid_obj    = $target{cpuid_obj}
\$bn_obj       = $target{bn_obj}
\$ec_obj       = $target{ec_obj}
\$des_obj      = $target{des_obj}
\$aes_obj      = $target{aes_obj}
\$bf_obj       = $target{bf_obj}
\$md5_obj      = $target{md5_obj}
\$sha1_obj     = $target{sha1_obj}
\$cast_obj     = $target{cast_obj}
\$rc4_obj      = $target{rc4_obj}
\$rmd160_obj   = $target{rmd160_obj}
\$rc5_obj      = $target{rc5_obj}
\$wp_obj       = $target{wp_obj}
\$cmll_obj     = $target{cmll_obj}
\$modes_obj    = $target{modes_obj}
\$engines_obj  = $target{engines_obj}
\$chacha_obj   = $target{chacha_obj}
\$poly1305_obj = $target{poly1305_obj}
\$perlasm_scheme = $target{perlasm_scheme}
\$dso_scheme   = $target{dso_scheme}
\$shared_target= $target{shared_target}
\$shared_cflag = $target{shared_cflag}
\$shared_ldflag = $target{shared_ldflag}
\$shared_extension = $target{shared_extension}
\$ranlib       = $target{ranlib}
\$arflags      = $target{arflags}
\$multilib     = $target{multilib}
EOF
        } elsif ($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 ($target{$_}) {
                    print "      '",$_,"'"," " x ($largest - length($_))," => '",$target{$_},"',\n";
                }
            }
            print "    },\n";
        }
        }

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; };

    map { $processor->($_); } @_;
}