2 files changed, 928 insertions, 920 deletions

diff --git a/config b/config
index 2e149ded7c..3f288f3740 100755
--- a/config
+++ b/config
@@ -1,926 +1,12 @@
-#!/bin/sh
-# Copyright 1998-2020 The OpenSSL Project Authors. All Rights Reserved.
+#! /usr/bin/env perl
+# -*- mode: perl; -*-
+# Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
 #
 # Licensed under the Apache License 2.0 (the "License").  You may not use
 # this file except in compliance with the License.  You can obtain a copy
 # in the file LICENSE in the source distribution or at
 # https://www.openssl.org/source/license.html
 
-# OpenSSL config: determine the operating system and run ./Configure
-# Derived from minarch and GuessOS from Apache.
-#
-# Do "config -h" for usage information.
-SUFFIX=""
-DRYRUN="false"
-VERBOSE="false"
-EXE=""
-THERE=`dirname $0`
-
-# pick up any command line args to config
-for i
-do
-case "$i" in
--d*) options=$options" --debug";;
--t*) DRYRUN="true" VERBOSE="true";;
--v*) VERBOSE="true";;
--h*) DRYRUN="true"; cat <<EOF
-Usage: config [options]
- -d	Build with debugging when possible.
- -t	Test mode, do not run the Configure perl script.
- -v	Verbose mode, show the exact Configure call that is being made.
- -h	This help.
-
-Any other text will be passed to the Configure perl script.
-See INSTALL for instructions.
-
-EOF
-;;
-*)  i=`echo "$i" | sed -e "s|'|'\\\\\\''|g"`
-    options="$options '$i'" ;;
-esac
-done
-
-# Environment that's being passed to Configure
-__CNF_CPPDEFINES=
-__CNF_CPPINCLUDES=
-__CNF_CPPFLAGS=
-__CNF_CFLAGS=
-__CNF_CXXFLAGS=
-__CNF_LDFLAGS=
-__CNF_LDLIBS=
-
-# First get uname entries that we use below
-
-[ "$MACHINE" ] || MACHINE=`(uname -m) 2>/dev/null` || MACHINE="unknown"
-[ "$RELEASE" ] || RELEASE=`(uname -r) 2>/dev/null` || RELEASE="unknown"
-[ "$SYSTEM" ] || SYSTEM=`(uname -s) 2>/dev/null`  || SYSTEM="unknown"
-[ "$BUILD" ] || VERSION=`(uname -v) 2>/dev/null` || VERSION="unknown"
-
-
-# Now test for ISC and SCO, since it is has a braindamaged uname.
-#
-# We need to work around FreeBSD 1.1.5.1
-(
-XREL=`uname -X 2>/dev/null | grep "^Release" | awk '{print $3}'`
-if [ "x$XREL" != "x" ]; then
-    if [ -f /etc/kconfig ]; then
-	case "$XREL" in
-	    4.0|4.1)
-		    echo "${MACHINE}-whatever-isc4"; exit 0
-		;;
-	esac
-    else
-	case "$XREL" in
-	    3.2v4.2)
-		echo "whatever-whatever-sco3"; exit 0
-		;;
-	    3.2v5.0*)
-		echo "whatever-whatever-sco5"; exit 0
-		;;
-	    4.2MP)
-		case "x${VERSION}" in
-		    x2.0*) echo "whatever-whatever-unixware20"; exit 0 ;;
-		    x2.1*) echo "whatever-whatever-unixware21"; exit 0 ;;
-		    x2*)   echo "whatever-whatever-unixware2";  exit 0 ;;
-		esac
-		;;
-	    4.2)
-		echo "whatever-whatever-unixware1"; exit 0
-		;;
-	    5*)
-		case "x${VERSION}" in
-		    # We hardcode i586 in place of ${MACHINE} for the
-		    # following reason. The catch is that even though Pentium
-		    # is minimum requirement for platforms in question,
-		    # ${MACHINE} gets always assigned to i386. Now, problem
-		    # with i386 is that it makes ./config pass 386 to
-		    # ./Configure, which in turn makes make generate
-		    # inefficient SHA-1 (for this moment) code.
-		    x[678]*)  echo "i586-sco-unixware7"; exit 0 ;;
-		esac
-		;;
-	esac
-    fi
-fi
-# Now we simply scan though... In most cases, the SYSTEM info is enough
-#
-case "${SYSTEM}:${RELEASE}:${VERSION}:${MACHINE}" in
-    A/UX:*)
-	echo "m68k-apple-aux3"; exit 0
-	;;
-
-    AIX:[3-9]:4:*)
-	echo "${MACHINE}-ibm-aix"; exit 0
-	;;
-
-    AIX:*:[5-9]:*)
-	echo "${MACHINE}-ibm-aix"; exit 0
-	;;
-
-    AIX:*)
-	echo "${MACHINE}-ibm-aix3"; exit 0
-	;;
-
-    HI-UX:*)
-	echo "${MACHINE}-hi-hiux"; exit 0
-	;;
-
-    HP-UX:*)
-	HPUXVER=`echo ${RELEASE}|sed -e 's/[^.]*.[0B]*//'`
-	case "$HPUXVER" in
-	    1[0-9].*)	# HPUX 10 and 11 targets are unified
-		echo "${MACHINE}-hp-hpux1x"; exit 0
-		;;
-	    *)
-		echo "${MACHINE}-hp-hpux"; exit 0
-		;;
-	esac
-	;;
-
-    IRIX:6.*)
-	echo "mips3-sgi-irix"; exit 0
-	;;
-
-    IRIX64:*)
-	echo "mips4-sgi-irix64"; exit 0
-	;;
-
-    Linux:[2-9].*)
-	echo "${MACHINE}-whatever-linux2"; exit 0
-	;;
-
-    Linux:1.*)
-	echo "${MACHINE}-whatever-linux1"; exit 0
-	;;
-
-    GNU*)
-	echo "hurd-x86"; exit 0;
-	;;
-
-    LynxOS:*)
-	echo "${MACHINE}-lynx-lynxos"; exit 0
-	;;
-
-    BSD/OS:4.*)  # BSD/OS always says 386
-	echo "i486-whatever-bsdi4"; exit 0
-	;;
-
-    BSD/386:*:*:*486*|BSD/OS:*:*:*:*486*)
-        case `/sbin/sysctl -n hw.model` in
-	    Pentium*)
-                echo "i586-whatever-bsdi"; exit 0
-                ;;
-            *)
-                echo "i386-whatever-bsdi"; exit 0
-                ;;
-            esac;
-	;;
-
-    BSD/386:*|BSD/OS:*)
-	echo "${MACHINE}-whatever-bsdi"; exit 0
-	;;
-
-    FreeBSD:*:*:*386*)
-        VERS=`echo ${RELEASE} | sed -e 's/[-(].*//'`
-        MACH=`sysctl -n hw.model`
-        ARCH='whatever'
-        case ${MACH} in
-           *386*       ) MACH="i386"     ;;
-           *486*       ) MACH="i486"     ;;
-           Pentium\ II*) MACH="i686"     ;;
-           Pentium*    ) MACH="i586"     ;;
-           *           ) MACH="$MACHINE" ;;
-        esac
-        case ${MACH} in
-           i[0-9]86 ) ARCH="pc" ;;
-        esac
-        echo "${MACH}-${ARCH}-freebsd${VERS}"; exit 0
-        ;;
-
-    DragonFly:*)
-	echo "${MACHINE}-whatever-dragonfly"; exit 0
-	;;
-
-    FreeBSD:*)
-	echo "${MACHINE}-whatever-freebsd"; exit 0
-	;;
-
-    Haiku:*)
-	echo "${MACHINE}-whatever-haiku"; exit 0
-	;;
-
-    NetBSD:*:*:*386*)
-        echo "`(/usr/sbin/sysctl -n hw.model || /sbin/sysctl -n hw.model) | sed 's,.*\(.\)86-class.*,i\186,'`-whatever-netbsd"; exit 0
-	;;
-
-    NetBSD:*)
-	echo "${MACHINE}-whatever-netbsd"; exit 0
-	;;
-
-    OpenBSD:*)
-	echo "${MACHINE}-whatever-openbsd"; exit 0
-	;;
-
-    OpenUNIX:*)
-	echo "${MACHINE}-unknown-OpenUNIX${VERSION}"; exit 0
-	;;
-
-    OSF1:*:*:*alpha*)
-	OSFMAJOR=`echo ${RELEASE}| sed -e 's/^V\([0-9]*\)\..*$/\1/'`
-	case "$OSFMAJOR" in
-	    4|5)
-		echo "${MACHINE}-dec-tru64"; exit 0
-		;;
-	    1|2|3)
-		echo "${MACHINE}-dec-osf"; exit 0
-		;;
-	    *)
-		echo "${MACHINE}-dec-osf"; exit 0
-		;;
-	esac
-	;;
-
-    Paragon*:*:*:*)
-	echo "i860-intel-osf1"; exit 0
-	;;
-
-    Rhapsody:*)
-	echo "ppc-apple-rhapsody"; exit 0
-	;;
-
-    Darwin:*)
-	case "$MACHINE" in
-	    Power*)
-		echo "ppc-apple-darwin${VERSION}"
-		;;
-	    x86_64)
-		echo "x86_64-apple-darwin${VERSION}"
-		;;
-	    *)
-		echo "i686-apple-darwin${VERSION}"
-		;;
-	esac
-	exit 0
-	;;
-
-    SunOS:5.*)
-	echo "${MACHINE}-whatever-solaris2"; exit 0
-	;;
-
-    SunOS:*)
-	echo "${MACHINE}-sun-sunos4"; exit 0
-	;;
-
-    UNIX_System_V:4.*:*)
-	echo "${MACHINE}-whatever-sysv4"; exit 0
-	;;
-
-    VOS:*:*:i786)
-     echo "i386-stratus-vos"; exit 0
-     ;;
-
-    VOS:*:*:*)
-     echo "hppa1.1-stratus-vos"; exit 0
-     ;;
-
-    *:4*:R4*:m88k)
-	echo "${MACHINE}-whatever-sysv4"; exit 0
-	;;
-
-    DYNIX/ptx:4*:*)
-	echo "${MACHINE}-whatever-sysv4"; exit 0
-	;;
-
-    *:4.0:3.0:3[34]?? | *:4.0:3.0:3[34]??,*)
-	echo "i486-ncr-sysv4"; exit 0
-	;;
-
-    ULTRIX:*)
-	echo "${MACHINE}-unknown-ultrix"; exit 0
-	;;
-
-    POSIX-BC*)
-	echo "${MACHINE}-siemens-sysv4"; exit 0   # Here, $MACHINE == "BS2000"
-	;;
-
-    machten:*)
-       echo "${MACHINE}-tenon-${SYSTEM}"; exit 0;
-       ;;
-
-    library:*)
-	echo "${MACHINE}-ncr-sysv4"; exit 0
-	;;
-
-    ConvexOS:*:11.0:*)
-	echo "${MACHINE}-v11-${SYSTEM}"; exit 0;
-	;;
-
-    # The following combinations are supported
-    # MINGW64* on x86_64 => mingw64
-    # MINGW32* on x86_64 => mingw
-    # MINGW32* on i?86 => mingw
-    #
-    # MINGW64* on i?86 isn't expected to work...
-    MINGW64*:*:*:x86_64)
-	echo "${MACHINE}-whatever-mingw64"; exit 0;
-	;;
-    MINGW*)
-	echo "${MACHINE}-whatever-mingw"; exit 0;
-	;;
-    CYGWIN*)
-	echo "${MACHINE}-pc-cygwin"; exit 0
-	;;
-
-    vxworks*)
-       echo "${MACHINE}-whatever-vxworks"; exit 0;
-       ;;
-esac
-
-#
-# Ugg. These are all we can determine by what we know about
-# the output of uname. Be more creative:
-#
-
-# Do the Apollo stuff first. Here, we just simply assume
-# that the existence of the /usr/apollo directory is proof
-# enough
-if [ -d /usr/apollo ]; then
-    echo "whatever-apollo-whatever"
-    exit 0
-fi
-
-# At this point we gone through all the one's
-# we know of: Punt
-
-echo "${MACHINE}-whatever-${SYSTEM}"
-exit 0
-) 2>/dev/null | (
-
-# ---------------------------------------------------------------------------
-# this is where the translation occurs into SSLeay terms
-# ---------------------------------------------------------------------------
-
-# Only set CC if not supplied already
-if [ -z "$CROSS_COMPILE$CC" ]; then
-  GCCVER=`sh -c "gcc -dumpversion" 2>/dev/null`
-  if [ "$GCCVER" != "" ]; then
-    # then strip off whatever prefix egcs prepends the number with...
-    # Hopefully, this will work for any future prefixes as well.
-    GCCVER=`echo $GCCVER | LC_ALL=C sed 's/^[a-zA-Z]*\-//'`
-    # Since gcc 3.1 gcc --version behaviour has changed.  gcc -dumpversion
-    # does give us what we want though, so we use that.  We just just the
-    # major and minor version numbers.
-    # peak single digit before and after first dot, e.g. 2.95.1 gives 29
-    GCCVER=`echo $GCCVER | sed 's/\([0-9]\)\.\([0-9]\).*/\1\2/'`
-    CC=gcc
-  else
-    CC=cc
-  fi
-fi
-GCCVER=${GCCVER:-0}
-if [ "$SYSTEM" = "HP-UX" ];then
-  # By default gcc is a ILP32 compiler (with long long == 64).
-  GCC_BITS="32"
-  if [ $GCCVER -ge 30 ]; then
-    # PA64 support only came in with gcc 3.0.x.
-    # We check if the preprocessor symbol __LP64__ is defined...
-    if echo "__LP64__" | gcc -v -E -x c - 2>/dev/null | grep "^__LP64__" 2>&1 > /dev/null; then
-      : # __LP64__ has slipped through, it therefore is not defined
-    else
-      GCC_BITS="64"
-    fi
-  fi
-fi
-if [ "$SYSTEM" = "SunOS" ]; then
-  if [ $GCCVER -ge 30 ]; then
-    # 64-bit ABI isn't officially supported in gcc 3.0, but it appears
-    # to be working, at the very least 'make test' passes...
-    if gcc -v -E -x c /dev/null 2>&1 | grep __arch64__ > /dev/null; then
-      GCC_ARCH="-m64"
-    else
-      GCC_ARCH="-m32"
-    fi
-  fi
-  # check for WorkShop C, expected output is "cc: blah-blah C x.x"
-  CCVER=`(cc -V 2>&1) 2>/dev/null | \
-  	egrep -e '^cc: .* C [0-9]\.[0-9]' | \
-	sed 's/.* C \([0-9]\)\.\([0-9]\).*/\1\2/'`
-  CCVER=${CCVER:-0}
-  if [ $MACHINE != i86pc -a $CCVER -gt 40 ]; then
-    CC=cc	# overrides gcc!!!
-    if [ $CCVER -eq 50 ]; then
-      echo "WARNING! Detected WorkShop C 5.0. Do make sure you have"
-      echo "         patch #107357-01 or later applied."
-      sleep 5
-    fi
-  fi
-fi
-
-if [ "${SYSTEM}" = "AIX" ]; then	# favor vendor cc over gcc
-    (cc) 2>&1 | grep -iv "not found" > /dev/null && CC=cc
-fi
-
-CCVER=${CCVER:-0}
-
-# read the output of the embedded GuessOS
-read GUESSOS
-
-echo Operating system: $GUESSOS
-
-# now map the output into SSLeay terms ... really should hack into the
-# script above so we end up with values in vars but that would take
-# more time that I want to waste at the moment
-case "$GUESSOS" in
-  uClinux*64*)
-    OUT=uClinux-dist64
-	;;
-  uClinux*)
-    OUT=uClinux-dist
-	;;
-  mips3-sgi-irix)
-	OUT="irix-mips3-$CC"
-	;;
-  mips4-sgi-irix64)
-	echo "WARNING! If you wish to build 64-bit library, then you have to"
-	echo "         invoke '$THERE/Configure irix64-mips4-$CC' *manually*."
-	if [ "$DRYRUN" = "false" -a -t 1 ]; then
-	  echo "         You have about 5 seconds to press Ctrl-C to abort."
-	  (trap "stty `stty -g`; exit 0" 2 0; stty -icanon min 0 time 50; read waste) <&1
-	fi
-	OUT="irix-mips3-$CC"
-	;;
-  ppc-apple-rhapsody) OUT="rhapsody-ppc-cc" ;;
-  ppc-apple-darwin*)
-	ISA64=`(sysctl -n hw.optional.64bitops) 2>/dev/null`
-	if [ "$ISA64" = "1" -a -z "$KERNEL_BITS" ]; then
-	    echo "WARNING! If you wish to build 64-bit library, then you have to"
-	    echo "         invoke '$THERE/Configure darwin64-ppc-cc' *manually*."
-	    if [ "$DRYRUN" = "false" -a -t 1 ]; then
-	      echo "         You have about 5 seconds to press Ctrl-C to abort."
-	      (trap "stty `stty -g`; exit 0" 2 0; stty -icanon min 0 time 50; read waste) <&1
-	    fi
-	fi
-	if [ "$ISA64" = "1" -a "$KERNEL_BITS" = "64" ]; then
-	    OUT="darwin64-ppc-cc"
-	else
-	    OUT="darwin-ppc-cc"
-	fi ;;
-  i?86-apple-darwin*)
-	ISA64=`(sysctl -n hw.optional.x86_64) 2>/dev/null`
-	if [ "$ISA64" = "1" -a -z "$KERNEL_BITS" ]; then
-	    echo "WARNING! If you wish to build 64-bit library, then you have to"
-	    echo "         invoke 'KERNEL_BITS=64 $THERE/config $options'."
-	    if [ "$DRYRUN" = "false" -a -t 1 ]; then
-	      echo "         You have about 5 seconds to press Ctrl-C to abort."
-	      (trap "stty `stty -g`; exit 1" 2; stty -icanon min 0 time 50; read waste; exit 0) <&1 || exit
-	    fi
-	fi
-	if [ "$ISA64" = "1" -a "$KERNEL_BITS" = "64" ]; then
-	    OUT="darwin64-x86_64-cc"
-	else
-	    OUT="darwin-i386-cc"
-	fi ;;
-  x86_64-apple-darwin*)
-	if [ "$KERNEL_BITS" = "32" ]; then
-	    OUT="darwin-i386-cc"
-	else
-	    OUT="darwin64-x86_64-cc"
-	fi ;;
-  armv6+7-*-iphoneos)
-	__CNF_CFLAGS="$__CNF_CFLAGS -arch armv6 -arch armv7"
-	__CNF_CXXFLAGS="$__CNF_CXXFLAGS -arch armv6 -arch armv7"
-	OUT="iphoneos-cross" ;;
-  *-*-iphoneos)
-	__CNF_CFLAGS="$__CNF_CFLAGS -arch ${MACHINE}"
-	__CNF_CXXFLAGS="$__CNF_CXXFLAGS -arch ${MACHINE}"
-	OUT="iphoneos-cross" ;;
-  arm64-*-iphoneos|*-*-ios64)
-	OUT="ios64-cross" ;;
-  alpha-*-linux2)
-        ISA=`awk '/cpu model/{print$4;exit(0);}' /proc/cpuinfo`
-	OUT="linux-alpha-$CC"
-	if [ "$CC" = "gcc" ]; then
-	    case ${ISA:-generic} in
-	    EV5|EV45)		__CNF_CFLAGS="$__CNF_CFLAGS -mcpu=ev5"
-				__CNF_CXXFLAGS="$__CNF_CFLAGS -mcpu=ev5";;
-	    EV56|PCA56)		__CNF_CFLAGS="$__CNF_CFLAGS -mcpu=ev56"
-				__CNF_CXXFLAGS="$__CNF_CXXFLAGS -mcpu=ev56";;
-	    *)			__CNF_CFLAGS="$__CNF_CFLAGS -mcpu=ev6"
-				__CNF_CXXFLAGS="$__CNF_CXXFLAGS -mcpu=ev6";;
-	    esac
-	fi
-	;;
-  ppc64-*-linux2)
-	if [ -z "$KERNEL_BITS" ]; then
-	    echo "WARNING! If you wish to build 64-bit library, then you have to"
-	    echo "         invoke '$THERE/Configure linux-ppc64' *manually*."
-	    if [ "$DRYRUN" = "false" -a -t 1 ]; then
-		echo "         You have about 5 seconds to press Ctrl-C to abort."
-		(trap "stty `stty -g`; exit 0" 2 0; stty -icanon min 0 time 50; read waste) <&1
-	    fi
-	fi
-	if [ "$KERNEL_BITS" = "64" ]; then
-	    OUT="linux-ppc64"
-	else
-	    OUT="linux-ppc"
-	    if (echo "__LP64__" | gcc -E -x c - 2>/dev/null | grep "^__LP64__" 2>&1 > /dev/null); then
-		:;
-	    else
-		__CNF_CFLAGS="$__CNF_CFLAGS -m32"
-		__CNF_CXXFLAGS="$__CNF_CXXFLAGS -m32"
-	    fi
-	fi
-	;;
-  ppc64le-*-linux2) OUT="linux-ppc64le" ;;
-  ppc-*-linux2) OUT="linux-ppc" ;;
-  mips64*-*-linux2)
-	echo "WARNING! If you wish to build 64-bit library, then you have to"
-	echo "         invoke '$THERE/Configure linux64-mips64' *manually*."
-	if [ "$DRYRUN" = "false" -a -t 1 ]; then
-	    echo "         You have about 5 seconds to press Ctrl-C to abort."
-	    (trap "stty `stty -g`; exit 0" 2 0; stty -icanon min 0 time 50; read waste) <&1
-	fi
-	OUT="linux-mips64"
-	;;
-  mips*-*-linux2) OUT="linux-mips32" ;;
-  ppc60x-*-vxworks*) OUT="vxworks-ppc60x" ;;
-  ppcgen-*-vxworks*) OUT="vxworks-ppcgen" ;;
-  pentium-*-vxworks*) OUT="vxworks-pentium" ;;
-  simlinux-*-vxworks*) OUT="vxworks-simlinux" ;;
-  mips-*-vxworks*) OUT="vxworks-mips";;
-  e2k-*-linux*) OUT="linux-generic64 -DL_ENDIAN" ;;
-  ia64-*-linux?) OUT="linux-ia64" ;;
-  sparc64-*-linux2)
-	echo "WARNING! If you *know* that your GNU C supports 64-bit/V9 ABI"
-	echo "         and wish to build 64-bit library, then you have to"
-	echo "         invoke '$THERE/Configure linux64-sparcv9' *manually*."
-	if [ "$DRYRUN" = "false" -a -t 1 ]; then
-	  echo "          You have about 5 seconds to press Ctrl-C to abort."
-	  (trap "stty `stty -g`; exit 0" 2 0; stty -icanon min 0 time 50; read waste) <&1
-	fi
-	OUT="linux-sparcv9" ;;
-  sparc-*-linux2)
-	KARCH=`awk '/^type/{print$3;exit(0);}' /proc/cpuinfo`
-	case ${KARCH:-sun4} in
-	sun4u*)	OUT="linux-sparcv9" ;;
-	sun4m)	OUT="linux-sparcv8" ;;
-	sun4d)	OUT="linux-sparcv8" ;;
-	*)	OUT="linux-generic32";
-		__CNF_CPPFLAGS="$__CNF_CPPFLAGS -DB_ENDIAN" ;;
-	esac ;;
-  parisc*-*-linux2)
-	# 64-bit builds under parisc64 linux are not supported and
-	# compiler is expected to generate 32-bit objects...
-	CPUARCH=`awk '/cpu family/{print substr($5,1,3); exit(0);}' /proc/cpuinfo`
-	CPUSCHEDULE=`awk '/^cpu.[ 	]*: PA/{print substr($3,3); exit(0);}' /proc/cpuinfo`
-
-	# ??TODO ??  Model transformations
-	# 0. CPU Architecture for the 1.1 processor has letter suffixes. We strip that off
-	#    assuming no further arch. identification will ever be used by GCC.
-	# 1. I'm most concerned about whether is a 7300LC is closer to a 7100 versus a 7100LC.
-	# 2. The variant 64-bit processors cause concern should GCC support explicit schedulers
-	#    for these chips in the future.
-	#         PA7300LC -> 7100LC (1.1)
-	#         PA8200   -> 8000   (2.0)
-	#         PA8500   -> 8000   (2.0)
-	#         PA8600   -> 8000   (2.0)
-
-	CPUSCHEDULE=`echo $CPUSCHEDULE|sed -e 's/7300LC/7100LC/' -e 's/8.00/8000/'`
-	# Finish Model transformations
-
-	__CNF_CPPFLAGS="$__CNF_CPPFLAGS -DB_ENDIAN"
-	__CNF_CFLAGS="$__CNF_CFLAGS -mschedule=$CPUSCHEDULE -march=$CPUARCH"
-	__CNF_CXXFLAGS="$__CNF_CXXFLAGS -mschedule=$CPUSCHEDULE -march=$CPUARCH"
-	OUT="linux-generic32" ;;
-  armv[1-3]*-*-linux2) OUT="linux-generic32" ;;
-  armv[7-9]*-*-linux2) OUT="linux-armv4"
-		       __CNF_CFLAGS="$__CNF_CFLAGS -march=armv7-a"
-		       __CNF_CXXFLAGS="$__CNF_CXXFLAGS -march=armv7-a"
-		       ;;
-  arm*-*-linux2) OUT="linux-armv4" ;;
-  aarch64-*-linux2) OUT="linux-aarch64" ;;
-  sh*b-*-linux2) OUT="linux-generic32";
-		 __CNF_CPPFLAGS="$__CNF_CPPFLAGS -DB_ENDIAN" ;;
-  sh*-*-linux2)	 OUT="linux-generic32";
-		 __CNF_CPPFLAGS="$__CNF_CPPFLAGS -DL_ENDIAN" ;;
-  m68k*-*-linux2) OUT="linux-generic32";
-		  __CNF_CPPFLAGS="$__CNF_CPPFLAGS -DB_ENDIAN" ;;
-  s390-*-linux2) OUT="linux-generic32";
-		 __CNF_CPPFLAGS="$__CNF_CPPFLAGS -DB_ENDIAN" ;;
-  s390x-*-linux2)
-	# To be uncommented when glibc bug is fixed, see Configure...
-	#if egrep -e '^features.* highgprs' /proc/cpuinfo >/dev/null ; then
-	#  echo "WARNING! If you wish to build \"highgprs\" 32-bit library, then you"
-	#  echo "         have to invoke './Configure linux32-s390x' *manually*."
-	#  if [ "$DRYRUN" = "false" -a -t -1 ]; then
-	#    echo "         You have about 5 seconds to press Ctrl-C to abort."
-	#    (trap "stty `stty -g`; exit 0" 2 0; stty -icanon min 0 time 50; read waste) <&1
-	#  fi
-	#fi
-	OUT="linux64-s390x"
-	;;
-  x86_64-*-linux?)
-	if $CC -dM -E -x c /dev/null 2>&1 | grep -q ILP32 > /dev/null; then
-	    OUT="linux-x32"
-	else
-	    OUT="linux-x86_64"
-	fi ;;
-  *86-*-linux2)
-        # On machines where the compiler understands -m32, prefer a
-        # config target that uses it
-        if $CC -m32 -E -x c /dev/null > /dev/null 2>&1; then
-            OUT="linux-x86"
-        else
-            OUT="linux-elf"
-        fi ;;
-  *86-*-linux1) OUT="linux-aout" ;;
-  *-*-linux?) OUT="linux-generic32" ;;
-  sun4[uv]*-*-solaris2)
-	OUT="solaris-sparcv9-$CC"
-	ISA64=`(isainfo) 2>/dev/null | grep sparcv9`
-	if [ "$ISA64" != "" -a "$KERNEL_BITS" = "" ]; then
-	    if [ "$CC" = "cc" -a $CCVER -ge 50 ]; then
-		echo "WARNING! If you wish to build 64-bit library, then you have to"
-		echo "         invoke '$THERE/Configure solaris64-sparcv9-cc' *manually*."
-		if [ "$DRYRUN" = "false" -a -t 1 ]; then
-		  echo "         You have about 5 seconds to press Ctrl-C to abort."
-		  (trap "stty `stty -g`; exit 0" 2 0; stty -icanon min 0 time 50; read waste) <&1
-		fi
-	    elif [ "$CC" = "gcc" -a "$GCC_ARCH" = "-m64" ]; then
-		# $GCC_ARCH denotes default ABI chosen by compiler driver
-		# (first one found on the $PATH). I assume that user
-		# expects certain consistency with the rest of his builds
-		# and therefore switch over to 64-bit. <appro>
-		OUT="solaris64-sparcv9-gcc"
-		echo "WARNING! If you wish to build 32-bit library, then you have to"
-		echo "         invoke '$THERE/Configure solaris-sparcv9-gcc' *manually*."
-		if [ "$DRYRUN" = "false" -a -t 1 ]; then
-		  echo "         You have about 5 seconds to press Ctrl-C to abort."
-		  (trap "stty `stty -g`; exit 0" 2 0; stty -icanon min 0 time 50; read waste) <&1
-		fi
-	    elif [ "$GCC_ARCH" = "-m32" ]; then
-		echo "NOTICE! If you *know* that your GNU C supports 64-bit/V9 ABI"
-		echo "        and wish to build 64-bit library, then you have to"
-		echo "        invoke '$THERE/Configure solaris64-sparcv9-gcc' *manually*."
-		if [ "$DRYRUN" = "false" -a -t 1 ]; then
-		  echo "         You have about 5 seconds to press Ctrl-C to abort."
-		  (trap "stty `stty -g`; exit 0" 2 0; stty -icanon min 0 time 50; read waste) <&1
-		fi
-	    fi
-	fi
-	if [ "$ISA64" != "" -a "$KERNEL_BITS" = "64" ]; then
-	    OUT="solaris64-sparcv9-$CC"
-	fi
-	;;
-  sun4m-*-solaris2)	OUT="solaris-sparcv8-$CC" ;;
-  sun4d-*-solaris2)	OUT="solaris-sparcv8-$CC" ;;
-  sun4*-*-solaris2)	OUT="solaris-sparcv7-$CC" ;;
-  *86*-*-solaris2)
-	ISA64=`(isainfo) 2>/dev/null | grep amd64`
-	if [ "$ISA64" != "" -a ${KERNEL_BITS:-64} -eq 64 ]; then
-	    OUT="solaris64-x86_64-$CC"
-	else
-	    OUT="solaris-x86-$CC"
-	    if [ `uname -r | sed -e 's/5\.//'` -lt 10 ]; then
-		options="$options no-sse2"
-	    fi
-	fi
-	;;
-  *-*-sunos4)		OUT="sunos-$CC" ;;
-
-  *86*-*-bsdi4)		OUT="BSD-x86-elf"; options="$options no-sse2";
-			__CNF_LDFLAGS="$__CNF_LDFLAGS -ldl" ;;
-  alpha*-*-*bsd*)	OUT="BSD-generic64";
-			__CNF_CPPFLAGS="$__CNF_CPPFLAGS -DL_ENDIAN" ;;
-  powerpc64-*-*bsd*)	OUT="BSD-generic64";
-			__CNF_CPPFLAGS="$__CNF_CPPFLAGS -DB_ENDIAN" ;;
-  sparc64-*-*bsd*)	OUT="BSD-sparc64" ;;
-  ia64-*-*bsd*)		OUT="BSD-ia64" ;;
-  x86_64-*-dragonfly*)  OUT="BSD-x86_64" ;;
-  amd64-*-*bsd*)	OUT="BSD-x86_64" ;;
-  *86*-*-*bsd*)		# mimic ld behaviour when it's looking for libc...
-			if [ -L /usr/lib/libc.so ]; then	# [Free|Net]BSD
-			    libc=/usr/lib/libc.so
-			else					# OpenBSD
-			    # ld searches for highest libc.so.* and so do we
-			    libc=`(ls /usr/lib/libc.so.* /lib/libc.so.* | tail -1) 2>/dev/null`
-			fi
-			case "`(file -L $libc) 2>/dev/null`" in
-			*ELF*)	OUT="BSD-x86-elf" ;;
-			*)	OUT="BSD-x86"; options="$options no-sse2" ;;
-			esac ;;
-  *-*-*bsd*)		OUT="BSD-generic32" ;;
-
-  x86_64-*-haiku)	OUT="haiku-x86_64" ;;
-  *-*-haiku)		OUT="haiku-x86" ;;
-
-  *-*-osf)		OUT="osf1-alpha-cc" ;;
-  *-*-tru64)		OUT="tru64-alpha-cc" ;;
-  *-*-[Uu]nix[Ww]are7)
-	if [ "$CC" = "gcc" ]; then
-	  OUT="unixware-7-gcc" ; options="$options no-sse2"
-	else
-	  OUT="unixware-7" ; options="$options no-sse2"
-	  __CNF_CPPFLAGS="$__CNF_CPPFLAGS -D__i386__"
-	fi
-	;;
-  *-*-[Uu]nix[Ww]are20*) OUT="unixware-2.0"; options="$options no-sse2 no-sha512" ;;
-  *-*-[Uu]nix[Ww]are21*) OUT="unixware-2.1"; options="$options no-sse2 no-sha512" ;;
-  *-*-vos)
-	options="$options no-threads no-shared no-asm no-dso"
-	EXE=".pm"
-	OUT="vos-$CC" ;;
-  BS2000-siemens-sysv4) OUT="BS2000-OSD" ;;
-  *-hpux1*)
-	if [ $CC = "gcc" -a $GCC_BITS = "64" ]; then
-	    OUT="hpux64-parisc2-gcc"
-	fi
-	[ "$KERNEL_BITS" ] || KERNEL_BITS=`(getconf KERNEL_BITS) 2>/dev/null`
-	KERNEL_BITS=${KERNEL_BITS:-32}
-	CPU_VERSION=`(getconf CPU_VERSION) 2>/dev/null`
-	CPU_VERSION=${CPU_VERSION:-0}
-	# See <sys/unistd.h> for further info on CPU_VERSION.
-	if   [ $CPU_VERSION -ge 768 ]; then	# IA-64 CPU
-	     if [ $KERNEL_BITS -eq 64 -a "$CC" = "cc" ]; then
-	        OUT="hpux64-ia64-cc"
-             else
-	        OUT="hpux-ia64-cc"
-             fi
-	elif [ $CPU_VERSION -ge 532 ]; then	# PA-RISC 2.x CPU
-	     # PA-RISC 2.0 is no longer supported as separate 32-bit
-	     # target. This is compensated for by run-time detection
-	     # in most critical assembly modules and taking advantage
-	     # of 2.0 architecture in PA-RISC 1.1 build.
-	     OUT=${OUT:-"hpux-parisc1_1-${CC}"}
-	     if [ $KERNEL_BITS -eq 64 -a "$CC" = "cc" ]; then
-		echo "WARNING! If you wish to build 64-bit library then you have to"
-		echo "         invoke '$THERE/Configure hpux64-parisc2-cc' *manually*."
-		if [ "$DRYRUN" = "false" -a -t 1 ]; then
-		  echo "         You have about 5 seconds to press Ctrl-C to abort."
-		  (trap "stty `stty -g`; exit 0" 2 0; stty -icanon min 0 time 50; read waste) <&1
-		fi
-	     fi
-	elif [ $CPU_VERSION -ge 528 ]; then	# PA-RISC 1.1+ CPU
-	     OUT="hpux-parisc1_1-${CC}"
-	elif [ $CPU_VERSION -ge 523 ]; then	# PA-RISC 1.0 CPU
-	     OUT="hpux-parisc-${CC}"
-	else					# Motorola(?) CPU
-	     OUT="hpux-$CC"
-	fi
-	__CNF_CPPFLAGS="$__CNF_CPPFLAGS -D_REENTRANT" ;;
-  *-hpux)	OUT="hpux-parisc-$CC" ;;
-  *-aix)
-	[ "$KERNEL_BITS" ] || KERNEL_BITS=`(getconf KERNEL_BITMODE) 2>/dev/null`
-	KERNEL_BITS=${KERNEL_BITS:-32}
-	OBJECT_MODE=${OBJECT_MODE:-32}
-	if [ "$CC" = "gcc" ]; then
-	    OUT="aix-gcc"
-          if [ $OBJECT_MODE -eq 64 ]; then
-            echo 'Your $OBJECT_MODE was found to be set to 64'
-            OUT="aix64-gcc"
-          fi
-	elif [ $OBJECT_MODE -eq 64 ]; then
-	    echo 'Your $OBJECT_MODE was found to be set to 64'
-	    OUT="aix64-cc"
-	else
-	    OUT="aix-cc"
-	    if [ $KERNEL_BITS -eq 64 ]; then
-		echo "WARNING! If you wish to build 64-bit kit, then you have to"
-		echo "         invoke '$THERE/Configure aix64-cc' *manually*."
-		if [ "$DRYRUN" = "false" -a -t 1 ]; then
-		    echo "         You have ~5 seconds to press Ctrl-C to abort."
-		    (trap "stty `stty -g`; exit 0" 2 0; stty -icanon min 0 time 50; read waste) <&1
-		fi
-	    fi
-	fi
-	if (lsattr -E -O -l `lsdev -c processor|awk '{print$1;exit}'` | grep -i powerpc) >/dev/null 2>&1; then
-	    :	# this applies even to Power3 and later, as they return PowerPC_POWER[345]
-	else
-	    options="$options no-asm"
-	fi
-	;;
-  # these are all covered by the catchall below
-  i[3456]86-*-cygwin) OUT="Cygwin-x86" ;;
-  *-*-cygwin) OUT="Cygwin-${MACHINE}" ;;
-  x86-*-android|i?86-*-android) OUT="android-x86" ;;
-  armv[7-9]*-*-android)
-      OUT="android-armeabi"
-      __CNF_CFLAGS="$__CNF_CFLAGS -march=armv7-a"
-      __CNF_CXXFLAGS="$__CNF_CXXFLAGS -march=armv7-a";;
-  arm*-*-android) OUT="android-armeabi" ;;
-  *) OUT=`echo $GUESSOS | awk -F- '{print $3}'`;;
-esac
-
-# NB: This atalla support has been superseded by the ENGINE support
-# That contains its own header and definitions anyway. Support can
-# be enabled or disabled on any supported platform without external
-# headers, eg. by adding the "hw-atalla" switch to ./config or
-# perl Configure
-#
-# See whether we can compile Atalla support
-#if [ -f /usr/include/atasi.h ]
-#then
-#  __CNF_CPPFLAGS="$__CNF_CPPFLAGS -DATALLA"
-#fi
-
-if [ -n "$CONFIG_OPTIONS" ]; then
-  options="$options $CONFIG_OPTIONS"
-fi
-
-# gcc < 2.8 does not support -march=ultrasparc
-if [ "$OUT" = solaris-sparcv9-gcc -a $GCCVER -lt 28 ]
-then
-  echo "WARNING! Falling down to 'solaris-sparcv8-gcc'."
-  echo "         Upgrade to gcc-2.8 or later."
-  sleep 5
-  OUT=solaris-sparcv8-gcc
-fi
-if [ "$OUT" = "linux-sparcv9" -a $GCCVER -lt 28 ]
-then
-  echo "WARNING! Falling down to 'linux-sparcv8'."
-  echo "         Upgrade to gcc-2.8 or later."
-  sleep 5
-  OUT=linux-sparcv8
-fi
-
-case "$GUESSOS" in
-  i386-*) options="$options 386" ;;
-esac
-
-if [ -z "$OUT" ]; then
-  OUT="$CC"
-fi
-
-if [ ".$PERL" = . ] ; then
-	for i in . `echo $PATH | sed 's/:/ /g'`; do
-		if [ -f "$i/perl5$EXE" ] ; then
-			PERL="$i/perl5$EXE"
-			break;
-		fi;
-	done
-fi
-
-if [ ".$PERL" = . ] ; then
-	for i in . `echo $PATH | sed 's/:/ /g'`; do
-		if [ -f "$i/perl$EXE" ] ; then
-			if "$i/perl$EXE" -e 'exit($]<5.0)'; then
-				PERL="$i/perl$EXE"
-				break;
-			fi;
-		fi;
-	done
-fi
-
-if [ ".$PERL" = . ] ; then
-	echo "You need Perl 5."
-	exit 1
-fi
-
-# run Configure to check to see if we need to specify the
-# compiler for the platform ... in which case we add it on
-# the end ... otherwise we leave it off
-
-$PERL $THERE/Configure LIST | grep "$OUT-$CC" > /dev/null
-if [ $? = "0" ]; then
-  OUT="$OUT-$CC"
-fi
-
-OUT="$OUT"
-
-if [ "$OUT" = "darwin64-x86_64-cc" ]; then
-    echo "WARNING! If you wish to build 32-bit libraries, then you have to"
-    echo "         invoke 'KERNEL_BITS=32 $THERE/config $options'."
-fi
-
-if $PERL $THERE/Configure LIST | grep "$OUT" > /dev/null; then
-  if [ "$VERBOSE" = "true" ]; then
-    echo /usr/bin/env \
-	 __CNF_CPPDEFINES="'$__CNF_CPPDEFINES'" \
-	 __CNF_CPPINCLUDES="'$__CNF_CPPINCLUDES'" \
-	 __CNF_CPPFLAGS="'$__CNF_CPPFLAGS'" \
-	 __CNF_CFLAGS="'$__CNF_CFLAGS'" \
-	 __CNF_CXXFLAGS="'$__CNF_CXXFLAGS'" \
-	 __CNF_LDFLAGS="'$__CNF_LDFLAGS'" \
-	 __CNF_LDLIBS="'$__CNF_LDLIBS'" \
-	 $PERL $THERE/Configure $OUT $options
-  fi
-  if [ "$DRYRUN" = "false" ]; then
-    # eval to make sure quoted options, possibly with spaces inside,
-    # are treated right
-    eval /usr/bin/env \
-	 __CNF_CPPDEFINES="'$__CNF_CPPDEFINES'" \
-	 __CNF_CPPINCLUDES="'$__CNF_CPPINCLUDES'" \
-	 __CNF_CPPFLAGS="'$__CNF_CPPFLAGS'" \
-	 __CNF_CFLAGS="'$__CNF_CFLAGS'" \
-	 __CNF_CXXFLAGS="'$__CNF_CXXFLAGS'" \
-	 __CNF_LDFLAGS="'$__CNF_LDFLAGS'" \
-	 __CNF_LDLIBS="'$__CNF_LDLIBS'" \
-	 $PERL $THERE/Configure $OUT $options
-  fi
-else
-  echo "This system ($OUT) is not supported. See file INSTALL for details."
-  exit 1
-fi
-
-# Do not add anothing from here on, so we don't lose the Configure exit code
-)
+use lib "util/perl";
+use OpenSSL::config;
+OpenSSL::config::main();
diff --git a/util/perl/OpenSSL/config.pm b/util/perl/OpenSSL/config.pm
new file mode 100755
index 0000000000..c1bbd32fbf
--- /dev/null
+++ b/util/perl/OpenSSL/config.pm
@@ -0,0 +1,922 @@
+#! /usr/bin/env perl
+# Copyright 1998-2020 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the Apache License 2.0 (the "License").  You may not use
+# this file except in compliance with the License.  You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
+# Determine the operating system and run ./Configure.  Far descendant from
+# Apache's minarch and GuessOS.
+
+package OpenSSL::config;
+
+use strict;
+use warnings;
+use Getopt::Std;
+use File::Basename;
+
+# These control our behavior.
+my $DRYRUN;
+my $VERBOSE;
+my $WAIT = 1;
+my $WHERE = dirname($0);
+
+# Machine type, etc., used to determine the platform
+my $MACHINE;
+my $RELEASE;
+my $SYSTEM;
+my $VERSION;
+my $CCVER;
+my $GCCVER;
+my $GCC_BITS;
+my $GCC_ARCH;
+
+# Some environment variables; they will affect Configure
+my $PERL = $ENV{PERL} // $^X // 'perl';
+my $CONFIG_OPTIONS = $ENV{CONFIG_OPTIONS} // '';
+my $CC = $ENV{CC} // 'cc';
+my $CROSS_COMPILE = $ENV{CROSS_COMPILE} // "";
+my $KERNEL_BITS = $ENV{KERNEL_BITS} // '';
+
+# This is what we will set as the target for calling Configure.
+my $options = '';
+
+# Environment that will be passed to Configure
+my $__CNF_CPPDEFINES = '';
+my $__CNF_CPPINCLUDES = '';
+my $__CNF_CPPFLAGS = '';
+my $__CNF_CFLAGS = '';
+my $__CNF_CXXFLAGS = '';
+my $__CNF_LDFLAGS = '';
+my $__CNF_LDLIBS = '';
+
+# Pattern matches against "${SYSTEM}:${RELEASE}:${VERSION}:${MACHINE}"
+my $simple_guess_patterns = [
+    [ 'A\/UX:',               'm68k-apple-aux3' ],
+    [ 'AIX:[3-9]:4:',         '${MACHINE}-ibm-aix' ],
+    [ 'AIX:.*:[5-9]:',        '${MACHINE}-ibm-aix' ],
+    [ 'AIX:',                 '${MACHINE}-ibm-aix3' ],
+    [ 'HI-UX:',               '${MACHINE}-hi-hiux' ],
+    [ 'IRIX:6.',              'mips3-sgi-irix' ],
+    [ 'IRIX64:',              'mips4-sgi-irix64' ],
+    [ 'Linux:[2-9]',          '${MACHINE}-whatever-linux2' ],
+    [ 'Linux:1',              '${MACHINE}-whatever-linux1' ],
+    [ 'GNU',                  'hurd-x86' ],
+    [ 'LynxOS:',              '${MACHINE}-lynx-lynxos' ],
+    # BSD/OS always says 386
+    [ 'BSD\/OS:4.*',          'i486-whatever-bsdi4' ],
+    [ 'BSD\/386:.*|BSD\/OS:', '${MACHINE}-whatever-bsdi' ],
+    [ 'DragonFly:',           '${MACHINE}-whatever-dragonfly' ],
+    [ 'FreeBSD:',             '${MACHINE}-whatever-freebsd' ],
+    [ 'Haiku:',               '${MACHINE}-whatever-haiku' ],
+    [ 'NetBSD:',              '${MACHINE}-whatever-netbsd' ],
+    [ 'OpenBSD:',             '${MACHINE}-whatever-openbsd' ],
+    [ 'OpenUNIX:',            '${MACHINE}-unknown-OpenUNIX${VERSION}' ],
+    [ 'Paragon.*:',           'i860-intel-osf1' ],
+    [ 'Rhapsody:',            'ppc-apple-rhapsody' ],
+    [ 'SunOS:5.',             '${MACHINE}-whatever-solaris2' ],
+    [ 'SunOS:',               '${MACHINE}-sun-sunos4' ],
+    [ 'UNIX_System_V:4.*:',   '${MACHINE}-whatever-sysv4' ],
+    [ 'VOS:.*:.*:i786',       'i386-stratus-vos' ],
+    [ 'VOS:.*:.*:',           'hppa1.1-stratus-vos' ],
+    [ '.*:4.*:R4.*:m88k',     '${MACHINE}-whatever-sysv4' ],
+    [ 'DYNIX\/ptx:4.*:',      '${MACHINE}-whatever-sysv4' ],
+    [ ':4.0:3.0:3[34]',       'i486-ncr-sysv4' ],
+    [ 'ULTRIX:',              '${MACHINE}-unknown-ultrix' ],
+    [ 'POSIX-BC',             'BS2000-siemens-sysv4' ],
+    [ 'machten:',             '${MACHINE}-tenon-${SYSTEM}' ],
+    [ 'library:',             '${MACHINE}-ncr-sysv4' ],
+    [ 'ConvexOS:.*:11.0:',    '${MACHINE}-v11-${SYSTEM}' ],
+    [ 'MINGW64.*:.*x86_64',   '${MACHINE}-whatever-mingw64' ],
+    [ 'MINGW',                '${MACHINE}-whatever-mingw' ],
+    [ 'CYGWIN',               '${MACHINE}-pc-cygwin' ],
+    [ 'vxworks',              '${MACHINE}-whatever-vxworks' ],
+    [ 'Darwin:.*Power',       'ppc-apple-darwin' ],
+    [ 'Darwin:.*x86_64',      'x86_64-apple-darwin' ],
+    [ 'Darwin:',              'i686-apple-darwin' ],
+];
+
+# More complex cases that require run-time code.
+my $complex_sys_list = [
+    [ 'HP-UX:', sub {
+        my $HPUXVER = $RELEASE;
+        $HPUXVER = s/[^.]*.[0B]*//;
+        # HPUX 10 and 11 targets are unified
+        return "${MACHINE}-hp-hpux1x" if $HPUXVER =~ m@1[0-9]@;
+        return "${MACHINE}-hp-hpux";
+    } ],
+
+    [ 'BSD/386:.*:.*:.*486.*|BSD/OS:.*:.*:.*:.*486', sub {
+        my $BSDVAR = `/sbin/sysctl -n hw.model`;
+        return "i586-whatever-bsdi" if $BSDVAR =~ m@Pentium@;
+        return "i386-whatever-bsdi";
+    } ],
+
+    [ 'FreeBSD:.*:.*:.*386', sub {
+        my $VERS = $RELEASE;
+        $VERS =~ s/[-(].*//;
+        my $MACH = `sysctl -n hw.model`;
+        $MACH = "i386" if $MACH =~ m@386@;
+        $MACH = "i486" if $MACH =~ m@486@;
+        $MACH = "i686" if $MACH =~ m@Pentium II@;
+        $MACH = "i586" if $MACH =~ m@Pentium@;
+        $MACH = "$MACHINE" if $MACH !~ /i.86/;
+        my $ARCH = 'whatever';
+        $ARCH = "pc" if $MACH =~ m@i[0-9]86@;
+        return "${MACH}-${ARCH}-freebsd${VERS}";
+    } ],
+
+    [ 'NetBSD:.*:.*:.*386', sub {
+        my $hw = `/usr/sbin/sysctl -n hw.model || /sbin/sysctl -n hw.model`;
+        $hw =~  s@.*(.)86-class.*@i${1}86@;
+        return "${hw}-whatever-netbsd";
+    } ],
+
+    [ 'OSF1:.*:.*:.*alpha', sub {
+        my $OSFMAJOR = $RELEASE;
+        $OSFMAJOR =~ 's/^V([0-9]*)\..*$/\1/';
+        return "${MACHINE}-dec-tru64" if $OSFMAJOR =~ m@[45]@;
+        return "${MACHINE}-dec-osf";
+    } ],
+];
+
+
+# Run a command, return true if exit zero else false.
+# Multiple args are glued together into a pipeline.
+# Name comes from OpenSSL tests, often written as "ok(run(...."
+sub okrun {
+    my $command = join(' | ', @_);
+    my $status = system($command) >> 8;
+    return $status == 0;
+}
+
+# Give user a chance to abort/interrupt if interactive if interactive.
+sub maybe_abort {
+    if ( $WAIT && -t 1 ) {
+        eval {
+            local $SIG{ALRM} = sub { die "Timeout"; };
+            local $| = 1;
+            alarm(5);
+            print "You have about five seconds to abort: ";
+            my $ignored = <STDIN>;
+            alarm(0);
+        };
+        print "\n" if $@ =~ /Timeout/;
+    }
+}
+
+# Parse options.
+sub call_getopt {
+    our($opt_d);
+    our($opt_h);
+    our($opt_t);
+    our($opt_v);
+    our($opt_w);
+    getopts("dhtvw");
+
+    # Building on windows needs a VisualC target.
+    my $iswin = $^O eq 'MSWin32';
+    my $foundvc = 0;
+
+    if ( $opt_h ) {
+        print <<'EOF';
+Usage: config [options] [args...]
+  -d    Build with debugging when possible.
+  -t    Test mode, do not run the Configure perl script.
+  -v    Verbose mode, show the exact Configure call that is being made.
+  -w    Do not wait after displaying any warnings.
+  -h    This help.
+All other arguments are passed to the Configure script.
+See INSTALL for instructions.
+EOF
+        exit;
+    }
+    # All other parameters are passed to Configure
+    foreach my $opt ( @ARGV ) {
+        # Could make the VC- part optional, but that might cause
+        # confusion.
+        if ( $iswin && $opt =~ /^VC-(WIN32|WIN64A|WIN64I|CE)$/i ) {
+            $opt = tr/a-z/A-Z/;
+            $opt = "VC-$opt" unless $opt =~ /^VC-/;
+            $foundvc = 1;
+        }
+        $options .= " $opt";
+    }
+    if ( $iswin && !$foundvc ) {
+        print <<EOF;
+WARNING: Did not find VisualC target.  See INSTALL for details.
+EOF
+        maybe_abort();
+    }
+    $options = " --debug" if $opt_d;
+    $DRYRUN = $opt_t;
+    $VERBOSE = $opt_v || $opt_t;
+    $WAIT = 0 if $opt_w;
+}
+
+# call uname with specified arg, return result.
+sub uname {
+    my $arg = shift;
+    open UNAME, "uname $arg 2>/dev/null|" or return "unknown";
+    my $line = <UNAME>;
+    close UNAME;
+    $line =~ s/[\r\n]+$//;
+    return "unknown" if $line eq '';
+    return $line;
+}
+
+# Set machine type, release, etc., variables.
+sub get_machine_etc {
+    $MACHINE = $ENV{MACHINE} // uname('-m');
+    $RELEASE = $ENV{RELEASE} // uname('-r');
+    $SYSTEM = $ENV{SYSTEM} // uname("-s");
+    $VERSION = uname('-v');
+}
+
+# Expand variable references in a string.
+sub expand {
+    my $var = shift;
+    $var =~ s/\$\{MACHINE\}/${MACHINE}/;
+    return $var;
+}
+
+# Add no-xxx if someone removed a crypto algorithm directory.
+# TODO: This should be moved to Configure.
+my @cryptodir = (
+    'aes', 'aria', 'bf', 'camellia', 'cast', 'des', 'dh', 'dsa', 'ec', 'hmac',
+    'idea', 'md2', 'md5', 'mdc2', 'rc2', 'rc4', 'rc5', 'ripemd', 'rsa',
+    'seed', 'sha', 'sm2', 'sm3', 'sm4'
+);
+sub remove_removed_crypto_directories {
+    foreach my $d ( @cryptodir ) {
+        $options .= " no-$d" if ! -d "$WHERE/crypto/$d";
+    }
+}
+
+# Look for ISC/SCO with its unique uname program
+sub is_sco_uname {
+    open UNAME, "uname -X 2>/dev/null|" or return '';
+    my $line = "";
+    while ( <UNAME> ) {
+        chop;
+        $line = $_ if m@^Release@;
+    }
+    close UNAME;
+    return "" if $line eq '';
+    my @fields = split($line);
+    return $fields[2];
+}
+
+sub get_sco_type {
+    my $REL = shift;
+
+    if ( -f "/etc/kconfig" ) {
+        return "${MACHINE}-whatever-isc4" if $REL eq '4.0' || $REL eq '4.1';
+    } else {
+        return "whatever-whatever-sco3" if $REL eq '3.2v4.2';
+        return "whatever-whatever-sco5" if $REL =~ m@3\.2v5\.0.*@;
+        if ( $REL eq "4.2MP" ) {
+            return "whatever-whatever-unixware20" if $VERSION =~ m@2\.0.*@;
+            return "whatever-whatever-unixware21" if $VERSION =~ m@2\.1.*@;
+            return "whatever-whatever-unixware2" if $VERSION =~ m@2.*@;
+        }
+        return "whatever-whatever-unixware1" if $REL eq "4.2";
+        if ( $REL =~ m@5.*@ ) {
+            # We hardcode i586 in place of ${MACHINE} for the following
+            # reason: even though Pentium is minimum requirement for
+            # platforms in question, ${MACHINE} gets always assigned to
+            # i386. This means i386 gets passed to Configure, which will
+            # cause bad assembler code to be generated.
+            return "i586-sco-unixware7" if $VERSION =~ m@[678].*@;
+        }
+    }
+}
+
+# Return the cputype-vendor-osversion
+sub guess_system {
+    # Special-cases for ISC, SCO, Unixware
+    my $REL = is_sco_uname();
+    if ( $REL ne "" ) {
+        my $result = get_sco_type($REL);
+        return expand($result) if $result ne '';
+    }
+
+    # Now pattern-match
+    my $sys = "${SYSTEM}:${RELEASE}:${VERSION}:${MACHINE}";
+
+    # Simple cases
+    foreach my $tuple ( @$simple_guess_patterns ) {
+        my $pat = @$tuple[0];
+        # Trailing $ omitted on purpose.
+        next if $sys !~ /^$pat/;
+        my $result = @$tuple[1];
+        return expand($result);
+    }
+
+    # Complex cases.
+    foreach my $tuple ( @$complex_sys_list ) {
+        my $pat = @$tuple[0];
+        # Trailing $ omitted on purpose.
+        next if $sys !~ /^$pat/;
+        my $ref = @$tuple[1];
+        my $result = &$ref;
+        return expand($result);
+    }
+
+    # Oh well.
+    return "${MACHINE}-whatever-${SYSTEM}";
+}
+
+# Figure out CC, GCCVAR, etc.
+sub determine_compiler_settings {
+    if ( "$CROSS_COMPILE$CC" eq '' ) {
+        $GCCVER = `gcc -dumpversion 2>/dev/null`;
+        if ( $GCCVER ne "" ) {
+            # Strip off whatever prefix egcs prepends the number with.
+            # Hopefully, this will work for any future prefixes as well.
+            $GCCVER =~ s/^[a-zA-Z]*\-//;
+	    # Since gcc 3.1 gcc --version behaviour has changed, but
+            # -dumpversion gives us what we want though, so use that.
+            # We only want the major and minor version numbers.  The
+            # pattern is deliberate; single digit before and after first
+            # dot, e.g. 2.95.1 gives 29
+            $GCCVER =~ s/([0-9])\.([0-9]).*/$1$2/;
+            $GCCVER = int($GCCVER);
+            $CC = 'gcc';
+        }
+    }
+
+    $GCCVER //= 0;
+
+    if ( $SYSTEM eq "HP-UX" ) {
+        # By default gcc is a ILP32 compiler (with long long == 64).
+        $GCC_BITS = "32";
+        if ( $GCCVER >= 30 ) {
+            # PA64 support only came in with gcc 3.0.x.
+            # We check if the preprocessor symbol __LP64__ is defined.
+            if ( okrun('echo __LP64__',
+                    'gcc -v -E -x c - 2>/dev/null',
+                    'grep "^__LP64__" 2>&1 >/dev/null') ) {
+                # __LP64__ has slipped through, it therefore is not defined
+            } else {
+                $GCC_BITS = '64';
+            }
+        }
+        return;
+    }
+
+    if ( ${SYSTEM} eq 'AIX' ) {
+        # favor vendor cc over gcc
+        if ( okrun('(cc) 2>&1',
+                'grep -iv "not found" >/dev/null') ) {
+            $CC = 'cc';
+        }
+        return;
+    }
+
+    if ( $SYSTEM eq "SunOS" ) {
+        if ( $GCCVER >= 30 ) {
+            # 64-bit ABI isn't officially supported in gcc 3.0, but seems
+            # to be working; at the very least 'make test' passes.
+            if ( okrun('gcc -v -E -x c /dev/null 2>&1',
+                    'grep __arch64__ >/dev/null') ) {
+                $GCC_ARCH = "-m64"
+            } else {
+                $GCC_ARCH = "-m32"
+            }
+        }
+        # check for WorkShop C, expected output is "cc: blah-blah C x.x"
+        $CCVER = `(cc -V 2>&1) 2>/dev/null | egrep -e '^cc: .* C [0-9]\.[0-9]'`;
+        $CCVER =~ s/.* C \([0-9]\)\.\([0-9]\).*/$1$2/;
+        $CCVER //= 0;
+        if ( $MACHINE ne 'i86pc' && $CCVER > 40 ) {
+            # overrides gcc!!!
+            $CC = 'cc';
+            if ( $CCVER == 50 ) {
+                print <<'EOF';
+WARNING! Found WorkShop C 5.0.
+         Make sure you have patch #107357-01 or later applied.
+EOF
+                maybe_abort();
+            }
+        }
+    }
+}
+
+# Map GUESSOS into OpenSSL terminology. Also sets some of variables
+# like $options, $__CNX_xxx.  And uses some, like the KERNEL flags
+# and MACHINE.
+# It would be nice to fix this so that this weren't necessary. :( XXX
+sub map_guess {
+    my $GUESSOS = shift;
+    my $OUT;
+    return 'uClinux-dist64' if $GUESSOS =~ 'uClinux.*64.*';
+    return 'uClinux-dist' if $GUESSOS =~ 'uClinux.*';
+    return "irix-mips3-$CC" if $GUESSOS =~ 'mips3-sgi-irix';
+    if ( $GUESSOS =~ 'mips4-sgi-irix64' ) {
+        print <<EOF;
+WARNING! To build 64-bit package, do this:
+         $WHERE/Configure irix64-mips4-$CC
+EOF
+        maybe_abort();
+        return "irix-mips3-$CC";
+    }
+    return "rhapsody-ppc-cc" if $GUESSOS =~ 'ppc-apple-rhapsody';
+    if ( $GUESSOS =~ 'ppc-apple-darwin' ) {
+        my $ISA64 = `sysctl -n hw.optional.64bitops 2>/dev/null`;
+        if ( $ISA64 == 1 && $KERNEL_BITS eq '' ) {
+            print <<EOF;
+WARNING! To build 64-bit package, do this:
+         $WHERE/Configure darwin64-ppc-cc
+EOF
+            maybe_abort();
+        }
+        return "darwin64-ppc-cc" if $ISA64 == 1 && $KERNEL_BITS eq '64';
+        return "darwin-ppc-cc";
+    }
+    if ( $GUESSOS =~ 'i.86-apple-darwin' ) {
+        my $ISA64 = `sysctl -n hw.optional.x86_64 2>/dev/null`;
+        if ( $ISA64 == 1 && $KERNEL_BITS eq '' ) {
+            print <<EOF;
+WARNING! To build 64-bit package, do this:
+         KERNEL_BITS=64 $WHERE/config $options
+EOF
+            maybe_abort();
+        }
+        return "darwin64-x86_64-cc" if $ISA64 == 1 && $KERNEL_BITS eq '64';
+        return "darwin-i386-cc";
+    }
+    if ( $GUESSOS =~ 'x86_64-apple-darwin' ) {
+        return "darwin-i386-cc" if $KERNEL_BITS eq '32';
+
+        print <<EOF;
+WARNING! To build 32-bit package, do this:
+         KERNEL_BITS=32 $WHERE/config $options
+EOF
+        maybe_abort();
+        return "darwin64-x86_64-cc"
+    }
+    if ( $GUESSOS =~ 'armv6+7-.*-iphoneos' ) {
+        $__CNF_CFLAGS .= " -arch armv6 -arch armv7";
+        $__CNF_CXXFLAGS .= " -arch armv6 -arch armv7";
+        return "iphoneos-cross";
+    }
+    if ( $GUESSOS =~ '.*-.*-iphoneos' ) {
+        $__CNF_CFLAGS .= " -arch ${MACHINE}";
+        $__CNF_CXXFLAGS .= " -arch ${MACHINE}";
+        return "iphoneos-cross";
+    }
+    return "ios64-cross" if $GUESSOS =~ 'arm64-.*-iphoneos|.*-.*-ios64';
+    if ( $GUESSOS =~ 'alpha-.*-linux2' ) {
+        my $ISA = `awk '/cpu model/{print \$4;exit(0);}' /proc/cpuinfo`;
+        $ISA //= 'generic';
+        if ( $CC eq "gcc" ) {
+            if ( $ISA =~ 'EV5|EV45' ) {
+                $__CNF_CFLAGS .= " -mcpu=ev5";
+                $__CNF_CFLAGS .= " -mcpu=ev5";
+            } elsif ( $ISA =~ 'EV56|PCA56' ) {
+                $__CNF_CFLAGS .= " -mcpu=ev56";
+                $__CNF_CXXFLAGS .= " -mcpu=ev56";
+            } else {
+                $__CNF_CFLAGS .= "-mcpu=ev6";
+                $__CNF_CXXFLAGS .= "-mcpu=ev6";
+            }
+        }
+        return "linux-alpha-$CC";
+    }
+    if ( $GUESSOS =~ 'ppc64-.*-linux2' ) {
+        if ( $KERNEL_BITS eq '' ) {
+            print <<EOF;
+WARNING! To build 64-bit package, do this:
+         $WHERE/Configure linux-ppc64
+EOF
+            maybe_abort();
+        }
+        return "linux-ppc64" if $KERNEL_BITS eq '64';
+        if (!okrun('echo __LP64__',
+                'gcc -E -x c - 2>/dev/null',
+                'grep "^__LP64__" 2>&1 >/dev/null') ) {
+            $__CNF_CFLAGS .= " -m32";
+            $__CNF_CXXFLAGS .= " -m32";
+        }
+        return "linux-ppc";
+    }
+    return "linux-ppc64le" if $GUESSOS =~ 'ppc64le-.*-linux2';
+    return "linux-ppc" if $GUESSOS =~ 'ppc-.*-linux2';
+    if ( $GUESSOS =~ 'mips64.*-*-linux2' ) {
+        print <<EOF;
+WARNING! To build 64-bit package, do this:
+         $WHERE/Configure linux64-mips64
+EOF
+        maybe_abort();
+        return "linux-mips64";
+    }
+    return "linux-mips32" if $GUESSOS =~ 'mips.*-.*-linux2';
+    return "vxworks-ppc60x" if $GUESSOS =~ 'ppc60x-.*-vxworks*';
+    return "vxworks-ppcgen" if $GUESSOS =~ 'ppcgen-.*-vxworks*';
+    return "vxworks-pentium" if $GUESSOS =~ 'pentium-.*-vxworks*';
+    return "vxworks-simlinux" if $GUESSOS =~ 'simlinux-.*-vxworks*';
+    return "vxworks-mips" if $GUESSOS =~ 'mips-.*-vxworks*';
+    return "linux-generic64 -DL_ENDIAN" if $GUESSOS =~ 'e2k-.*-linux*';
+    return "linux-ia64" if $GUESSOS =~ 'ia64-.*-linux.';
+    if ( $GUESSOS =~ 'sparc64-.*-linux2' ) {
+        print <<EOF;
+WARNING! If you *know* that your GNU C supports 64-bit/V9 ABI and you
+         want to build 64-bit library, do this:
+         $WHERE/Configure linux64-sparcv9
+EOF
+        maybe_abort();
+        return "linux-sparcv9";
+    }
+    if ( $GUESSOS =~ 'sparc-.*-linux2' ) {
+        my $KARCH = `awk '/^type/{print \$3;exit(0);}' /proc/cpuinfo`;
+        $KARCH //= "sun4";
+        return "linux-sparcv9" if $KARCH =~ 'sun4u*';
+        return "linux-sparcv8" if $KARCH =~ 'sun4[md]';
+        $__CNF_CPPFLAGS .= " -DB_ENDIAN";
+        return "linux-generic32";
+    }
+    if ( $GUESSOS =~ 'parisc.*-.*-linux2' ) {
+        # 64-bit builds under parisc64 linux are not supported and
+        # compiler is expected to generate 32-bit objects...
+        my $CPUARCH =
+        `awk '/cpu family/{print substr(\$5,1,3); exit(0);}' /proc/cpuinfo`;
+        my $CPUSCHEDULE =
+        `awk '/^cpu.[ 	]*: PA/{print substr(\$3,3); exit(0);}' /proc/cpuinfo`;
+        # TODO XXX  Model transformations
+        # 0. CPU Architecture for the 1.1 processor has letter suffixes. We
+        #    strip that off assuming no further arch. identification will ever
+        #    be used by GCC.
+        # 1. I'm most concerned about whether is a 7300LC is closer to a 7100
+        #    versus a 7100LC.
+        # 2. The variant 64-bit processors cause concern should GCC support
+        #    explicit schedulers for these chips in the future.
+        #         PA7300LC -> 7100LC (1.1)
+        #         PA8200   -> 8000   (2.0)
+        #         PA8500   -> 8000   (2.0)
+        #         PA8600   -> 8000   (2.0)
+        $CPUSCHEDULE =~ s/7300LC/7100LC/;
+        $CPUSCHEDULE =~ s/8.00/8000/;
+        # Finish Model transformations
+        $__CNF_CPPFLAGS .= " -DB_ENDIAN";
+        $__CNF_CFLAGS .= " -mschedule=$CPUSCHEDULE -march=$CPUARCH";
+        $__CNF_CXXFLAGS .= " -mschedule=$CPUSCHEDULE -march=$CPUARCH";
+        return "linux-generic32";
+    }
+    return "linux-generic32" if $GUESSOS =~ 'armv[1-3].*-.*-linux2';
+    if ( $GUESSOS =~ 'armv[7-9].*-.*-linux2' ) {
+        $__CNF_CFLAGS .= " -march=armv7-a";
+        $__CNF_CXXFLAGS .= " -march=armv7-a";
+        return "linux-armv4";
+    }
+    return "linux-armv4" if $GUESSOS =~ 'arm.*-.*-linux2';
+    return "linux-aarch64" if $GUESSOS =~ 'aarch64-.*-linux2';
+    if ( $GUESSOS =~ 'sh.*b-.*-linux2' ) {
+        $__CNF_CPPFLAGS .= " -DB_ENDIAN";
+        return "linux-generic32";
+    }
+    if ( $GUESSOS =~ 'sh.*-.*-linux2' ) {
+        $__CNF_CPPFLAGS .= " -DL_ENDIAN";
+        return "linux-generic32";
+    }
+    if ( $GUESSOS =~ 'm68k.*-.*-linux2' || $GUESSOS =~ 's390-.*-linux2' ) {
+        $__CNF_CPPFLAGS .= " -DB_ENDIAN";
+        return "linux-generic32";
+    }
+    if ( $GUESSOS =~ 's390x-.*-linux2' ) {
+        # Disabled until a glibc bug is fixed; see Configure.
+        if (0 || okrun(
+                'egrep -e \'^features.* highgprs\' /proc/cpuinfo >/dev/null') )
+        {
+            print <<EOF;
+WARNING! To build "highgprs" 32-bit package, do this:
+         $WHERE/Configure linux32-s390x
+EOF
+            maybe_abort();
+        }
+        return "linux64-s390x";
+    }
+    if ( $GUESSOS =~ 'x86_64-.*-linux.' ) {
+        return "linux-x32"
+            if okrun("$CC -dM -E -x c /dev/null 2>&1",
+                'grep -q ILP32 >/dev/null');
+        return "linux-x86_64";
+    }
+    if ( $GUESSOS =~ '.*86-.*-linux2' ) {
+        # On machines where the compiler understands -m32, prefer a
+        # config target that uses it
+        return "linux-x86"
+            if okrun("$CC -m32 -E -x c /dev/null >/dev/null 2>&1");
+        return "linux-elf"
+    }
+    return "linux-aout" if $GUESSOS =~ '.*86-.*-linux1';
+    return "linux-generic32" if $GUESSOS =~ '.*-.*-linux.';
+    if ( $GUESSOS =~ 'sun4[uv].*-.*-solaris2' ) {
+        my $ISA64 = `isainfo 2>/dev/null | grep sparcv9`;
+        if ( $ISA64 ne "" && $KERNEL_BITS eq '' ) {
+            if ( $CC eq "cc" && $CCVER >= 50 ) {
+                print <<EOF;
+WARNING! To build 64-bit package, do this:
+         $WHERE/Configure solaris64-sparcv9-cc
+EOF
+                maybe_abort();
+            } elsif ( $CC eq "gcc" && $GCC_ARCH eq "-m64" ) {
+                # $GCC_ARCH denotes default ABI chosen by compiler driver
+                # (first one found on the $PATH). I assume that user
+                # expects certain consistency with the rest of his builds
+                # and therefore switch over to 64-bit. <appro>
+                print <<EOF;
+WARNING! To build 32-bit package, do this:
+         $WHERE/Configure solaris-sparcv9-gcc
+EOF
+                maybe_abort();
+                return "solaris64-sparcv9-gcc";
+            } elsif ( $GCC_ARCH eq "-m32" ) {
+                print <<EOF;
+NOTICE! If you *know* that your GNU C supports 64-bit/V9 ABI and you wish
+        to build 64-bit library, do this:
+        $WHERE/Configure solaris64-sparcv9-gcc
+EOF
+                maybe_abort();
+            }
+        }
+        return "solaris64-sparcv9-$CC" if $ISA64 ne "" && $KERNEL_BITS eq '64';
+        return "solaris-sparcv9-$CC";
+    }
+    return "solaris-sparcv8-$CC" if $GUESSOS =~ 'sun4m-.*-solaris2';
+    return "solaris-sparcv8-$CC" if $GUESSOS =~ 'sun4d-.*-solaris2';
+    return "solaris-sparcv7-$CC" if $GUESSOS =~ 'sun4.*-.*-solaris2';
+    if ( $GUESSOS =~ '.*86.*-.*-solaris2' ) {
+        my $ISA64 = `isainfo 2>/dev/null | grep amd64`;
+        my $KB = $KERNEL_BITS // '64';
+        return "solaris64-x86_64-$CC" if $ISA64 ne "" && $KB eq '64';
+        my $REL = uname('-r');
+        $REL =~ s/5\.//;
+        $options .= " no-sse2" if int($REL) < 10;
+        return "solaris-x86-$CC";
+    }
+    return "sunos-$CC" if $GUESSOS =~ '.*-.*-sunos4';
+    if ( $GUESSOS =~ '.*86.*-.*-bsdi4' ) {
+        $options .= " no-sse2";
+        $__CNF_LDFLAGS .= " -ldl";
+        return "BSD-x86-elf";
+    }
+    if ( $GUESSOS =~ 'alpha.*-.*-.*bsd.*' ) {
+        $__CNF_CPPFLAGS .= " -DL_ENDIAN";
+        return "BSD-generic64";
+    }
+    if ( $GUESSOS =~ 'powerpc64-.*-.*bsd.*' ) {
+        $__CNF_CPPFLAGS .= " -DB_ENDIAN";
+        return "BSD-generic64";
+    }
+    return "BSD-sparc64" if $GUESSOS =~ 'sparc64-.*-.*bsd.*';
+    return "BSD-ia64" if $GUESSOS =~ 'ia64-.*-.*bsd.*';
+    return "BSD-x86_64" if $GUESSOS =~ 'x86_64-.*-dragonfly.*';
+    return "BSD-x86_64" if $GUESSOS =~ 'amd64-.*-.*bsd.*';
+    if ( $GUESSOS =~ '.*86.*-.*-.*bsd.*' ) {
+        # mimic ld behaviour when it's looking for libc...
+        my $libc;
+        if ( -l "/usr/lib/libc.so" ) {
+            $libc = "/usr/lib/libc.so";
+        } else {
+            # ld searches for highest libc.so.* and so do we
+            $libc = 
+            `(ls /usr/lib/libc.so.* /lib/libc.so.* | tail -1) 2>/dev/null`;
+        }
+        my $what = `file -L $libc 2>/dev/null`;
+        return "BSD-x86-elf" if $what =~ /ELF/;
+        $options .= " no-sse2";
+        return "BSD-x86";
+    }
+    return "BSD-generic32" if $GUESSOS =~ '.*-.*-.*bsd.*';
+    return "haiku-x86_64" if $GUESSOS =~ 'x86_64-.*-haiku';
+    return "haiku-x86" if $GUESSOS =~ '.*-.*-haiku';
+    return "osf1-alpha-cc" if $GUESSOS =~ '.*-.*-osf';
+    return "tru64-alpha-cc" if $GUESSOS =~ '.*-.*-tru64';
+    if ( $GUESSOS =~ '.*-.*-[Uu]nix[Ww]are7' ) {
+        $options .= "no-sse2";
+        return "unixware-7-gcc" if $CC eq "gcc";
+        $__CNF_CPPFLAGS .= " -D__i386__";
+        return "unixware-7";
+    }
+    if ( $GUESSOS =~ '.*-.*-[Uu]nix[Ww]are20*' ) {
+        $options .= " no-sse2 no-sha512";
+        return "unixware-2.0";
+    }
+    if ( $GUESSOS =~ '.*-.*-[Uu]nix[Ww]are21*' ) {
+        $options .= " no-sse2 no-sha512";
+        return "unixware-2.1";
+    }
+    if ( $GUESSOS =~ '.*-.*-vos' ) {
+        $options .= " no-threads no-shared no-asm no-dso";
+        return "vos-$CC";
+    }
+    return "BS2000-OSD" if $GUESSOS =~ 'BS2000-siemens-sysv4';
+    return "Cygwin-x86" if $GUESSOS =~ 'i[3456]86-.*-cygwin';
+    return "Cygwin-${MACHINE}" if $GUESSOS =~ '.*-.*-cygwin';
+    return "android-x86" if $GUESSOS =~ 'x86-.*-android|i.86-.*-android';
+    if ( $GUESSOS =~ 'armv[7-9].*-.*-android' ) {
+        $__CNF_CFLAGS .= " -march=armv7-a";
+        $__CNF_CXXFLAGS .= " -march=armv7-a";
+        return "android-armeabi";
+    }
+    return "android-armeabi" if $GUESSOS =~ 'arm.*-.*-android';
+    if ( $GUESSOS =~ '.*-hpux1.*' ) {
+        $OUT = "hpux64-parisc2-gcc" if $CC = "gcc" && $GCC_BITS eq '64';
+        $KERNEL_BITS //= `getconf KERNEL_BITS 2>/dev/null` // '32';
+        # See <sys/unistd.h> for further info on CPU_VERSION.
+        my $CPU_VERSION = `getconf CPU_VERSION 2>/dev/null` // 0;
+        $__CNF_CPPFLAGS .= " -D_REENTRANT";
+        if ( $CPU_VERSION >= 768 ) {
+            # IA-64 CPU
+            return "hpux64-ia64-cc" if $KERNEL_BITS eq '64' && $CC eq "cc";
+            return "hpux-ia64-cc"
+        }
+        if ( $CPU_VERSION >= 532 ) {
+            # PA-RISC 2.x CPU
+            # PA-RISC 2.0 is no longer supported as separate 32-bit
+            # target. This is compensated for by run-time detection
+            # in most critical assembly modules and taking advantage
+            # of 2.0 architecture in PA-RISC 1.1 build.
+            $OUT //= "hpux-parisc1_1-${CC}";
+            if ( $KERNEL_BITS eq '64' && $CC eq "cc" ) {
+                print <<EOF;
+WARNING! To build 64-bit package, do this:
+         $WHERE/Configure hpux64-parisc2-cc
+EOF
+                maybe_abort();
+            }
+            return $OUT;
+        }
+        # PA-RISC 1.1+ CPU?
+        return "hpux-parisc1_1-${CC}" if $CPU_VERSION >= 528;
+        # PA-RISC 1.0 CPU
+        return "hpux-parisc-${CC}" if $CPU_VERSION >= 523;
+        # Motorola(?) CPU
+        return "hpux-$CC";
+        return $OUT;
+    }
+    return "hpux-parisc-$CC" if $GUESSOS =~ '.*-hpux';
+    if ( $GUESSOS =~ '.*-aix' ) {
+        $KERNEL_BITS //= `getconf KERNEL_BITMODE 2>/dev/null`;
+        $KERNEL_BITS //= '32';
+        my $OBJECT_MODE //= 32;
+        if ( $CC eq "gcc" ) {
+            $OUT = "aix-gcc";
+            if ( $OBJECT_MODE == 64 ) {
+                print 'Your $OBJECT_MODE was found to be set to 64';
+                $OUT = "aix64-gcc"
+            }
+        } elsif ( $OBJECT_MODE == 64 ) {
+            print 'Your $OBJECT_MODE was found to be set to 64';
+            $OUT = "aix64-cc";
+        } else {
+            $OUT = "aix-cc";
+            if ( $KERNEL_BITS eq '64' ) {
+                print <<EOF;
+WARNING! To build 64-bit package, do this:
+         $WHERE/Configure aix64-cc
+EOF
+                maybe_abort();
+            }
+        }
+        if ( okrun(
+                "lsattr -E -O -l `lsdev -c processor|awk '{print \$1;exit}'`",
+                'grep -i powerpc) >/dev/null 2>&1') ) {
+            # this applies even to Power3 and later, as they return
+            # PowerPC_POWER[345]
+        } else {
+            $options .= " no-asm";
+        }
+        return $OUT;
+    }
+
+    # Last case, return "z" from x-y-z
+    my @fields = split(/-/, $GUESSOS);
+    return $fields[2];
+}
+
+# gcc < 2.8 does not support -march=ultrasparc
+sub check_solaris_sparc8 {
+    my $OUT = shift;
+    if ( $OUT eq 'solaris-sparcv9-gcc' && $GCCVER < 28 ) {
+        print <<EOF;
+WARNING! Downgrading to solaris-sparcv8-gcc
+         Upgrade to gcc-2.8 or later.
+EOF
+      maybe_abort();
+      return 'solaris-sparcv8-gcc';
+    }
+    if ( $OUT eq "linux-sparcv9" && $GCCVER < 28 ) {
+      print <<EOF;
+WARNING! Downgrading to linux-sparcv8
+         Upgrade to gcc-2.8 or later.
+EOF
+      maybe_abort();
+      return 'linux-sparcv8';
+    }
+    return $OUT;
+}
+
+# Append $CC to the target if that's in the Config list.
+sub check_target_exists {
+    my $OUT = shift;
+    my %table;
+
+    open T, "$PERL $WHERE/Configure LIST|" or die "Can't get LIST, $!";
+    while ( <T> ) {
+        chop;
+        $table{$_} = 1;
+    }
+    close T;
+    return "$OUT-$CC" if defined $table{"$OUT-$CC"};
+    return "$OUT" if defined $table{$OUT};
+    print "This system ($OUT) is not supported. See INSTALL for details.\n";
+    exit 1;
+}
+
+
+###
+###   MAIN PROCESSING
+###
+
+# Common part, does all the real work.
+sub common {
+    my $showguess = shift;
+
+    get_machine_etc();
+    my $GUESSOS = guess_system();
+    print "Operating system: $GUESSOS\n" if $VERBOSE || $showguess;
+    $options .= " 386" if $GUESSOS =~ /i386-/;
+    remove_removed_crypto_directories();
+    determine_compiler_settings();
+    my $TARGET = map_guess($GUESSOS) // $CC;
+    $TARGET = check_solaris_sparc8($TARGET);
+    $TARGET = check_target_exists($TARGET);
+    $options .= " $CONFIG_OPTIONS" if $CONFIG_OPTIONS ne '';
+    return $TARGET;
+}
+
+##  If called from Configure
+sub get_platform {
+    my $ref = shift;
+    my %options = %{$ref};
+    $VERBOSE = 1 if defined $options{verbose};
+    $options .= " --debug" if defined $options{debug};
+    $WAIT = 0 if defined $options{nowait};
+
+    my $TARGET = common(0);
+
+    # Populate the environment settings.
+    my %env;
+    $env{__CNF_CPPDEFINES} = $__CNF_CPPDEFINES;
+    $env{__CNF_CPPINCLUDES} = $__CNF_CPPINCLUDES;
+    $env{__CNF_CPPFLAGS} = $__CNF_CPPFLAGS;
+    $env{__CNF_CFLAGS} = $__CNF_CFLAGS;
+    $env{__CNF_CXXFLAGS} = $__CNF_CXXFLAGS;
+
+    # Prepare results and return them
+    my %ret = {
+        'target' => $TARGET,
+        'options' => $options,
+        'envvars' => %env,
+    };
+    return %ret;
+}
+
+
+# If running tandlone (via the "config" shell script)
+sub main {
+    call_getopt();
+
+    my $TARGET = common(1);
+
+    if ( $VERBOSE ) {
+        print <<EOF;
+
+export __CNF_CPPDEFINES="$__CNF_CPPDEFINES"
+export __CNF_CPPINCLUDES="$__CNF_CPPINCLUDES"
+export __CNF_CPPFLAGS="$__CNF_CPPFLAGS"
+export __CNF_CFLAGS="$__CNF_CFLAGS"
+export __CNF_CXXFLAGS="$__CNF_CXXFLAGS"
+export __CNF_LDFLAGS="$__CNF_LDFLAGS"
+export __CNF_LDLIBS="$__CNF_LDLIBS"
+$PERL $WHERE/Configure $TARGET $options
+EOF
+    }
+
+    return if $DRYRUN;
+
+    print "\n";
+    $ENV{__CNF_CPPDEFINES} = $__CNF_CPPDEFINES;
+    $ENV{__CNF_CPPINCLUDES} = $__CNF_CPPINCLUDES;
+    $ENV{__CNF_CPPFLAGS} = $__CNF_CPPFLAGS;
+    $ENV{__CNF_CFLAGS} = $__CNF_CFLAGS;
+    $ENV{__CNF_CXXFLAGS} = $__CNF_CXXFLAGS;
+    $ENV{__CNF_LDFLAGS} = $__CNF_LDFLAGS;
+    $ENV{__CNF_LDLIBS} = $__CNF_LDLIBS;
+    exit 1 if ! okrun("$PERL $WHERE/Configure $TARGET $options");
+}
+
+1;