#!/bin/sh
#
# OpenSSL config: determine the operating system and run ./Configure
#
# "config -h" for usage information.
#
#          this is a merge of minarch and GuessOS from the Apache Group.
#          Originally written by Tim Hudson <tjh@cryptsoft.com>.

# Original Apache Group comments on GuessOS

# Simple OS/Platform guesser. Similar to config.guess but
# much, much smaller. Since it was developed for use with
# Apache, it follows under Apache's regular licensing
# with one specific addition: Any changes or additions
# to this script should be Emailed to the Apache
# group (apache@apache.org) in general and to
# Jim Jagielski (jim@jaguNET.com) in specific.
#
# Be as similar to the output of config.guess/config.sub
# as possible.

# First get uname entries that we use below

MACHINE=`(uname -m) 2>/dev/null` || MACHINE="unknown"
RELEASE=`(uname -r) 2>/dev/null` || RELEASE="unknown"
SYSTEM=`(uname -s) 2>/dev/null`  || SYSTEM="unknown"
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 "$XREL" in
	    3.2v4.2)
		echo "whatever-whatever-sco3"; exit 0
		;;
	    3.2v5.0*)
		echo "whatever-whatever-sco5"; exit 0
		;;
	    4.2MP)
		if [ "x$VERSION" = "x2.1.1" ]; then
		    echo "${MACHINE}-whatever-unixware211"; exit 0
		else
		    echo "${MACHINE}-whatever-unixware2"; exit 0
		fi
		;;
	    4.2)
		echo "whatever-whatever-unixware1"; exit 0
		;;
	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:*)
	echo "${MACHINE}-ibm-aix"; exit 0
	;;

    dgux:*)
	echo "${MACHINE}-dg-dgux"; exit 0
	;;

    HI-UX:*)
	echo "${MACHINE}-hi-hiux"; exit 0
	;;

    HP-UX:*)
	HPUXVER=`echo ${RELEASE}|sed -e 's/[^.]*.[0B]*//'`
	case "$HPUXVER" in
	    10.*)
		echo "${MACHINE}-hp-hpux10."; exit 0
		;;
	    *)
		echo "${MACHINE}-hp-hpux"; exit 0
		;;
	esac
	;;

    IRIX:*)
	echo "${MACHINE}-sgi-irix"; exit 0
	;;

    IRIX64:*)
	echo "${MACHINE}-sgi-irix64"; exit 0
	;;

    Linux:[2-9].*)
	echo "${MACHINE}-whatever-linux2"; exit 0
	;;

    Linux:1.*)
	echo "${MACHINE}-whatever-linux1"; exit 0
	;;

    LynxOS:*)
	echo "${MACHINE}-lynx-lynxos"; exit 0
	;;

    BSD/386:*:*:*486*|BSD/OS:*:*:*:*486*)
	echo "i486-whatever-bsdi"; exit 0
	;;

    BSD/386:*|BSD/OS:*)
	echo "${MACHINE}-whatever-bsdi"; exit 0
	;;

    FreeBSD:3*:*:*)
	echo "${MACHINE}-whatever-freebsd3"; exit 0
	;;

    FreeBSD:*:*:*386*)
        case `sysctl -n hw.model` in
	    Pentium*)
                echo "i586-whatever-freebsd"; exit 0
                ;;
            *)
                echo "i386-whatever-freebsd"; exit 0
                ;;
            esac;
	;;

    FreeBSD:*)
	echo "${MACHINE}-whatever-freebsd"; exit 0
	;;

    NetBSD:*:*:*386*)
        echo "`sysctl -n hw.model | sed 's,.*\(.\)86-class.*,i\186,'`-whateve\r-netbsd"; exit 0
	;;

    NetBSD:*)
	echo "${MACHINE}-whatever-netbsd"; exit 0
	;;

    OpenBSD:*)
	echo "${MACHINE}-whatever-openbsd"; exit 0
	;;

    OSF1:*:*:*alpha*)
	echo "${MACHINE}-dec-osf"; exit 0
	;;

    QNX:*)
	case "$VERSION" in
	    423)
		echo "${MACHINE}-qssl-qnx32"
		;;
	    *)
		echo "${MACHINE}-qssl-qnx"
		;;
	esac
	exit 0
	;;

    Paragon*:*:*:*)
	echo "i860-intel-osf1"; exit 0
	;;

    SunOS:5.*)
	echo "${MACHINE}-sun-solaris2"; exit 0
	;;

    SunOS:*)
	echo "${MACHINE}-sun-sunos4"; exit 0
	;;

    UNIX_System_V:4.*:*)
	echo "${MACHINE}-whatever-sysv4"; 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
	;;

    SINIX*)
	echo "${MACHINE}-sni-sysv4"; exit 0
	;;

    machten:*)
       echo "${MACHINE}-tenon-${SYSTEM}"; exit 0;
       ;;

    library:*)
	echo "${MACHINE}-ncr-sysv4"; exit 0
	;;

    ConvexOS:*:11.0:*)
	echo "${MACHINE}-v11-${SYSTEM}"; 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 existance of the /usr/apollo directory is proof
# enough
if [ -d /usr/apollo ]; then
    echo "whatever-apollo-whatever"
    exit 0
fi

# Now NeXT
ISNEXT=`hostinfo 2>/dev/null`
case "$ISNEXT" in
    *NeXT*)
	echo "whatever-next-nextstep"; exit 0
	;;
esac

# At this point we gone through all the one's
# we know of: Punt

echo "${MACHINE}-whatever-${SYSTEM}|${RELEASE}|${VERSION}" 
exit 0
) 2>/dev/null | (

# ---------------------------------------------------------------------------
# this is where the translation occurs into SSLeay terms
# ---------------------------------------------------------------------------

PREFIX=""
SUFFIX=""
VERBOSE="false"
TEST="false"

# pick up any command line args to config
for i
do
case "$i" in 
-d*) PREFIX="debug-";;
-v*) VERBOSE="true";;
-t*) TEST="true";;
-h*) TEST="true"; cat <<EOF
Usage: config [options]
 -d	Add a debug- prefix to machine choice.
 -v	Verbose mode.
 -t	Test mode, do not run the Configure perl script.
 -h	This help.

Any other text will be passed to the Configure perl script.
See INSTALL for instructions.

EOF
;;
*) options=$options" $i" ;;
esac
done

# figure out if gcc is available and if so we use it otherwise
# we fallback to whatever cc does on the system
GCCVER=`(gcc -v) 2>&1`
if [ $? = "0" ]; then
  CC=gcc
else
  CC=cc
fi

# read the output of the embedded GuessOS 
read GUESSOS

if [ "$VERBOSE" = "true" ]; then
  echo GUESSOS $GUESSOS
fi

# 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 "$GUESSOS" in
  alpha-*-linux2) OUT="alpha-gcc" ;;
  ppc-*-linux2) OUT="linux-ppc" ;;
  *-*-linux2) OUT="linux-elf" ;;
  *-*-linux1) OUT="linux-aout" ;;
  sun4*-sun-solaris2) OUT="solaris-sparc-$CC" ;;
  *86*-sun-solaris2) OUT="solaris-x86-$CC" ;;
  *-*-sunos4) OUT="sunos-$CC" ;;
  *-freebsd3) OUT="FreeBSD-elf" ;;
  *-freebsd) OUT="FreeBSD" ;;
  *86*-*-netbsd) OUT="NetBSD-x86" ;;
  sun3*-*-netbsd) OUT="NetBSD-m68" ;;
  *-*-netbsd) OUT="NetBSD-sparc" ;;
  *86*-*-openbsd) OUT="OpenBSD-x86" ;;
  alpha*-*-openbsd) OUT="OpenBSD-alpha" ;;
  pmax*-*-openbsd) OUT="OpenBSD-mips" ;;
  *-*-openbsd) OUT="OpenBSD" ;;
  *-*-osf) OUT="alpha-cc" ;;
  *-*-unixware*) OUT="unixware-2.0" ;;
  *-sni-sysv4) OUT="SINIX" ;;
  *-hpux*) OUT="hpux-$CC" ;;
  # these are all covered by the catchall below
  # *-aix) OUT="aix-$CC" ;;
  # *-dgux) OUT="dgux" ;;
  *) OUT=`echo $GUESSOS | awk -F- '{print $3}'`;;
esac

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" ] ; then
			PERL="$i/perl5"
			break;
		fi;
	done
fi

if [ ".$PERL" = . ] ; then
	for i in . `echo $PATH | sed 's/:/ /g'`; do
		if [ -f "$i/perl" ] ; then
			if "$i/perl" -e 'exit($]<5.0)'; then
				PERL="$i/perl"
				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

$PERL ./Configure 2>&1 | grep "$OUT-$CC" > /dev/null
if [ $? = "0" ]; then
  OUT="$OUT-$CC"
fi

OUT="$PREFIX$OUT"

# at this point we have the answer ... which we could check again
# and then fallback to a vanilla SSLeay build but then this script
# wouldn't get updated
echo Configuring for $OUT

if [ "$TEST" = "true" ]; then
  echo $PERL ./Configure $OUT $options
else
  $PERL ./Configure $OUT $options
fi

)