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[perl5.git] / ext / util / extliblist

case $CONFIG in
'')
	if test -f config.sh; then TOP=.;
	elif test -f ../config.sh; then TOP=..;
	elif test -f ../../config.sh; then TOP=../..;
	elif test -f ../../../config.sh; then TOP=../../..;
	elif test -f ../../../../config.sh; then TOP=../../../..;
	else
		echo "Can't find config.sh."; exit 1
	fi
	. $TOP/config.sh
	;;
esac
: extliblist
:
: Author:  Andy Dougherty    doughera@lafcol.lafayette.edu
:
: This utility was only used by the old Makefile.SH extension
: mechanism.  It is now obsolete and may be removed in a future
: release.
:
: This utility takes a list of libraries in the form
: -llib1 -llib2 -llib3
: and prints out lines suitable for inclusion in an extension
: Makefile.  
: Extra library paths may be included with the form -L/another/path
: this will affect the searches for all subsequent libraries.
:
: It is intended to be "dotted" from within an extension Makefile.SH.
: see ext/POSIX/Makefile.SH for an example.
: Prior to calling this, the variable potential_libs should be set 
: to the potential list of libraries
:
: It sets the following
: extralibs = full list of libraries needed for static linking.
:		Only those libraries that actually exist are included.
: dynaloadlibs = full path names of those libraries that are needed 
:		but can be linked in dynamically on this platform.  On 
:		SunOS, for example, this would be .so* libraries, 
:		but not archive libraries.
:		Eventually, this list can be used to write a bootstrap file.
: statloadlibs = list of those libraries which must be statically
:		linked into the shared library.  On SunOS 4.1.3, 
:		for example,  I have only an archive version of
:		-lm, and it must be linked in statically.
:
:  This script uses config.sh variables libs, libpth, and so.  It is mostly
:  taken from the metaconfig libs.U unit.
extralibs=''
dynaloadlibs=''
statloadlibs=''
Llibpth=''
for thislib in `echo "XXX $potential_libs " | $sed 's/ -l/ /g'` ; do
	case "$thislib" in
	XXX)
		: Handle case where potential_libs is empty.
		;;
	-L*)
		: Handle possible linker path arguments.
		newpath=`echo $thislib | $sed 's/^-L//'`
		if $test -d $newpath; then
			Llibpth="$Llibpth $newpath"
			extralibs="$extralibs $thislib"
			statloadlibs="$statloadlibs $thislib"
		fi
		;;
	*)
		: Handle possible library arguments.
		for thispth in $Llibpth $libpth; do
			: Loop over possible wildcards and take the last one.
			for fullname in $thispth/lib$thislib.$so.[0-9]* ; do
				:
			done
			if $test -f $fullname; then
				break
			elif fullname=$thispth/lib$thislib.$so && $test -f $fullname; then
				break
			elif fullname=$thispth/lib${thislib}_s.a && $test -f $fullname; then
				thislib=${thislib}_s
				break
			elif fullname=$thispth/lib${thislib}.a && $test -f $fullname; then
				break
			elif fullname=$thispth/Slib${thislib}.a && $test -f $fullname; then
				break
			else
				fullname=''
			fi
		done
		: Now update library lists
		case "$fullname" in
		'') 
			: Skip nonexistent files
			;;
		*)
			: Do not add it into the extralibs if it is already linked in
			: with the main perl executable.
			case " $libs " in
			*" -l$thislib "*|*" -l${thislib}_s "*) ;;
			*)	extralibs="$extralibs -l$thislib" ;;
			esac
			:
			: For NeXT and DLD, put files into DYNALOADLIBS to be
			: converted into a boostrap file.  For other systems,
			: we will use ld with what I have misnamed STATLOADLIBS
			: to assemble the shared object.
			case "$dlsrc" in
			dl_dld*|dl_next*)
				dynaloadlibs="$dynaloadlibs $fullname"   ;;
			*)
				case "$fullname" in
				*.a)
					statloadlibs="$statloadlibs -l$thislib" 
					;;
				*)   
					: For SunOS4, do not add in this shared library
					: if it is already linked in the main
					: perl executable
					case "$osname" in
					sunos)
						case " $libs " in
						*" -l$thislib "*) ;;
						*)	statloadlibs="$statloadlibs -l$thislib" ;;
						esac
						;;
					*)
						statloadlibs="$statloadlibs -l$thislib" 
						;;
					esac
					;;
				esac
				;;
			esac
			;;
		esac
		;;
	esac
done

case "$dlsrc" in
dl_next*)
	extralibs=`echo " $extralibs "| $sed -e 's/ -lm / /'` ;;
esac

set X $extralibs
shift
extralibs="$*"

set X $dynaloadlibs
shift
dynaloadlibs="$*"

set X $statloadlibs
shift
statloadlibs="$*"