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#! /bin/sh
#
# shobj-conf -- output a series of variable assignments to be substituted
#               into a Makefile by configure which specify system-dependent
#               information for creating shared objects that may be loaded
#               into bash with `enable -f'
#
# usage: shobj-conf [-C compiler] -c host_cpu -o host_os -v host_vendor
#
# Chet Ramey
# chet@po.cwru.edu

#
# defaults
#
SHOBJ_STATUS=supported
SHLIB_STATUS=supported

SHOBJ_CC=cc
SHOBJ_CFLAGS=
SHOBJ_LD=
SHOBJ_LDFLAGS=
SHOBJ_XLDFLAGS=
SHOBJ_LIBS=

SHLIB_XLDFLAGS=
SHLIB_LIBS=
SHLIB_LIBSUFF='so'

SHLIB_LIBVERSION='$(SHLIB_LIBSUFF)'

PROGNAME=`basename $0`
USAGE="$PROGNAME [-C compiler] -c host_cpu -o host_os -v host_vendor"

while [ $# -gt 0 ]; do
        case "$1" in
        -C)     shift; SHOBJ_CC="$1"; shift ;;
        -c)     shift; host_cpu="$1"; shift ;;
        -o)     shift; host_os="$1"; shift ;;
        -v)     shift; host_vendor="$1"; shift ;;
        *)      echo "$USAGE" >&2 ; exit 2;;
        esac
done

case "${host_os}-${SHOBJ_CC}" in
sunos4*-gcc*)
        SHOBJ_CFLAGS=-fpic
        SHOBJ_LD=/usr/bin/ld
        SHOBJ_LDFLAGS='-assert pure-text'

        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)'
        ;;

sunos4*)
        SHOBJ_CFLAGS=-pic
        SHOBJ_LD=/usr/bin/ld
        SHOBJ_LDFLAGS='-assert pure-text'

        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)'
        ;;

sunos5*-gcc*|solaris2*-gcc*)
        SHOBJ_CFLAGS=-fpic
        SHOBJ_LD='${CC}'
        SHOBJ_LDFLAGS='-shared -Wl,-i -Wl,-h,$@'

#       SHLIB_XLDFLAGS='-R $(libdir)'
        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

sunos5*|solaris2*)
        SHOBJ_CFLAGS='-K pic'
        SHOBJ_LD=/usr/ccs/bin/ld
        SHOBJ_LDFLAGS='-G -dy -z text -i -h $@'

#       SHLIB_XLDFLAGS='-R $(libdir)'
        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

freebsd2* | netbsd* | openbsd*)
        SHOBJ_CFLAGS=-fpic
        SHOBJ_LD=ld
        SHOBJ_LDFLAGS='-x -Bshareable'

        SHLIB_XLDFLAGS='-R$(libdir)'
        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)'
        ;;

# FreeBSD-3.x can have either a.out or ELF object files
#freebsd3*)
#       SHOBJ_CFLAGS=-fpic
#       SHOBJ_LD='${CC}'
#       SHOBJ_LDFLAGS='-shared'
#
#       SHLIB_XLDFLAGS='-R$(libdir)'
#       SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)'
#       ;;

# FreeBSD-3.x ELF
freebsd3*)
        SHOBJ_CFLAGS=-fpic
        SHOBJ_LD='${CC}'

        if [ -x /usr/bin/objformat ] && [ "`/usr/bin/objformat`" = "elf" ]; then
                SHOBJ_LDFLAGS='-shared -Wl,-soname,$@'

                SHLIB_XLDFLAGS='-Wl,-rpath,$(libdir)'
                SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        else
                SHOBJ_LDFLAGS='-shared'

                SHLIB_XLDFLAGS='-R$(libdir)'
                SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)'
        fi
        ;;

linux*)
        SHOBJ_CFLAGS=-fPIC
        SHOBJ_LD='${CC}'
        SHOBJ_LDFLAGS='-shared -Wl,-soname,$@'

        SHLIB_XLDFLAGS='-Wl,-rpath,$(libdir)'
        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)'
        ;;

bsdi2*)
        SHOBJ_CC=shlicc2
        SHOBJ_CFLAGS=
        SHOBJ_LD=ld
        SHOBJ_LDFLAGS=-r
        SHOBJ_LIBS=-lc_s.2.1.0

        # BSD/OS 2.x and 3.x `shared libraries' are too much of a pain in
        # the ass -- they require changing {/usr/lib,etc}/shlib.map on
        # each system, and the library creation process is byzantine
        SHLIB_STATUS=unsupported
        ;;

bsdi3*)
        SHOBJ_CC=shlicc2
        SHOBJ_CFLAGS=
        SHOBJ_LD=ld
        SHOBJ_LDFLAGS=-r
        SHOBJ_LIBS=-lc_s.3.0.0

        # BSD/OS 2.x and 3.x `shared libraries' are too much of a pain in
        # the ass -- they require changing {/usr/lib,etc}/shlib.map on
        # each system, and the library creation process is byzantine
        SHLIB_STATUS=unsupported
        ;;

bsdi4*)
        # BSD/OS 4.x now supports ELF and SunOS-style dynamically-linked
        # shared libraries.  gcc 2.x is the standard compiler, and the
        # `normal' gcc options should work as they do in Linux.

        SHOBJ_CFLAGS=-fPIC
        SHOBJ_LD='${CC}'
        SHOBJ_LDFLAGS='-shared -Wl,-soname,$@'

        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)'
        ;;

osf*-gcc*)
        # Fix to use gcc linker driver from bfischer@TechFak.Uni-Bielefeld.DE
        SHOBJ_LD='${CC}'
        SHOBJ_LDFLAGS='-shared -Wl,-soname,$@'

        SHLIB_XLDFLAGS='-rpath $(libdir)'
        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

osf*)
        SHOBJ_LD=ld
        SHOBJ_LDFLAGS='-shared -soname $@ -expect_unresolved "*"'

        SHLIB_XLDFLAGS='-rpath $(libdir)'
        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

aix4.[2-9]*-gcc*)               # lightly tested by jik@cisco.com
        SHOBJ_CFLAGS=-fpic
        SHOBJ_LD='ld'
        SHOBJ_LDFLAGS='-bdynamic -bnoentry -bexpall'
        SHOBJ_XLDFLAGS='-G'

        SHLIB_XLDFLAGS='-bM:SRE'
        SHLIB_LIBS='-lcurses -lc'
        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

aix4.[2-9]*)
        SHOBJ_CFLAGS=-K
        SHOBJ_LD='ld'
        SHOBJ_LDFLAGS='-bdynamic -bnoentry -bexpall'
        SHOBJ_XLDFLAGS='-G'

        SHLIB_XLDFLAGS='-bM:SRE'
        SHLIB_LIBS='-lcurses -lc'
        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

#
# THE FOLLOWING ARE UNTESTED -- and some may not support the dlopen interface
#
irix[56]*-gcc*)
        SHOBJ_CFLAGS='-fpic'
        SHOBJ_LD='${CC}'
        SHOBJ_LDFLAGS='-shared -Wl,-soname,$@'

        SHLIB_XLDFLAGS='-Wl,-rpath,$(libdir)'
        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

irix[56]*)
        SHOBJ_CFLAGS='-K PIC'
        SHOBJ_LD=ld
#       SHOBJ_LDFLAGS='-call_shared -hidden_symbol -no_unresolved -soname $@'
#       Change from David Kaelbling <drk@sgi.com>
        SHOBJ_LDFLAGS='-shared -no_unresolved -soname $@'

        SHLIB_XLDFLAGS='-rpath $(libdir)'
        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

hpux9*-gcc*)
        # must use gcc; the bundled cc cannot compile PIC code
        SHOBJ_CFLAGS='-fpic'
        SHOBJ_LD='${CC}'
        SHOBJ_LDFLAGS='-shared -Wl,-b -Wl,+s'

        SHLIB_XLDFLAGS='-Wl,+b,$(libdir)'
        SHLIB_LIBSUFF='sl'
        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

hpux9*)
        SHOBJ_STATUS=unsupported
        SHLIB_STATUS=unsupported
        ;;

hpux10*-gcc*)
        # must use gcc; the bundled cc cannot compile PIC code
        SHOBJ_CFLAGS='-fpic'
        SHOBJ_LD='${CC}'
        SHOBJ_LDFLAGS='-shared -Wl,-b -Wl,+s'

        SHLIB_XLDFLAGS='-Wl,+h,$@ -Wl,+b,$(libdir)'
        SHLIB_LIBSUFF='sl'
        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

hpux10*)
        SHOBJ_STATUS=unsupported
        SHLIB_STATUS=unsupported
        ;;

hpux11*-gcc*)
        # must use gcc; the bundled cc cannot compile PIC code
        SHOBJ_CFLAGS='-fpic'
        SHOBJ_LD='${CC}'
#       SHOBJ_LDFLAGS='-shared -Wl,-b -Wl,-B,symbolic -Wl,+s -Wl,+std -Wl,+h,$@'
        SHOBJ_LDFLAGS='-shared -Wl,-b -Wl,+s -Wl,+h,$@'

        SHLIB_XLDFLAGS='-Wl,+b,$(libdir)'
        SHLIB_LIBSUFF='sl'
        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

hpux11*)
        SHOBJ_STATUS=unsupported
        SHLIB_STATUS=unsupported
        ;;

sysv4*-gcc*)
        SHOBJ_CFLAGS=-shared
        SHOBJ_LDFLAGS='-shared -h $@'
        SHOBJ_LD='${CC}'

        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

sysv4*)
        SHOBJ_CFLAGS='-K PIC'
        SHOBJ_LD=ld
        SHOBJ_LDFLAGS='-dy -z text -G -h $@'

        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

sco3.2v5*-gcc*)
        SHOBJ_CFLAGS='-fpic'            # DEFAULTS TO ELF
        SHOBJ_LD='${CC}'
        SHOBJ_LDFLAGS='-shared'

        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

sco3.2v5*)
        SHOBJ_CFLAGS='-K pic -b elf'
        SHOBJ_LD=ld
        SHOBJ_LDFLAGS='-G -b elf -dy -z text -h $@'

        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

sysv5uw7*-gcc*)
        SHOBJ_CFLAGS='-fpic'
        SHOBJ_LD='${CC}'
        SHOBJ_LDFLAGS='-shared'

        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

sysv5uw7*)
        SHOBJ_CFLAGS='-K PIC'
        SHOBJ_LD=ld
        SHOBJ_LDFLAGS='-G -dy -z text -h $@'

        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;
        
dgux*-gcc*)
        SHOBJ_CFLAGS=-fpic
        SHOBJ_LD='${CC}'
        SHOBJ_LDFLAGS='-shared'

        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

dgux*)
        SHOBJ_CFLAGS='-K pic'
        SHOBJ_LD=ld
        SHOBJ_LDFLAGS='-G -dy -h $@'

        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

msdos*)
        SHOBJ_STATUS=unsupported
        SHLIB_STATUS=unsupported
        ;;

#
# Rely on correct gcc configuration for everything else
#
*-gcc*)
        SHOBJ_CFLAGS=-fpic
        SHOBJ_LD='${CC}'
        SHOBJ_LDFLAGS='-shared'

        SHLIB_LIBVERSION='$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)'
        ;;

*)
        SHOBJ_STATUS=unsupported
        SHLIB_STATUS=unsupported
        ;;

esac

echo SHOBJ_CC=\'"$SHOBJ_CC"\'
echo SHOBJ_CFLAGS=\'"$SHOBJ_CFLAGS"\'
echo SHOBJ_LD=\'"$SHOBJ_LD"\'
echo SHOBJ_LDFLAGS=\'"$SHOBJ_LDFLAGS"\'
echo SHOBJ_XLDFLAGS=\'"$SHOBJ_XLDFLAGS"\'
echo SHOBJ_LIBS=\'"$SHOBJ_LIBS"\'

echo SHLIB_XLDFLAGS=\'"$SHLIB_XLDFLAGS"\'
echo SHLIB_LIBS=\'"$SHLIB_LIBS"\'
echo SHLIB_LIBSUFF=\'"$SHLIB_LIBSUFF"\'
echo SHLIB_LIBVERSION=\'"$SHLIB_LIBVERSION"\'

echo SHOBJ_STATUS=\'"$SHOBJ_STATUS"\'
echo SHLIB_STATUS=\'"$SHLIB_STATUS"\'

exit 0