trunk/opengl-update/opengl-update.sh

#!/bin/bash
# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /home/cvsd/magellan-cvs/magellan-src/opengl-update/opengl-update.sh,v 1.5 2007-11-14 18:18:47 niro Exp $
# Author:  Martin Schlemmer <azarah@gentoo.org>
# Further modifications by Donnie Berkholz <spyderous@gentoo.org>
# Further modifications based off submissions to bug #54984 <cyfred@gentoo.org>
# Further modifications by Jeremy Huddleston <eradicator@gentoo.org>
#
# hacked for use with magellan-linux
# <niro@magellan-linux.de>
#

. /etc/init.d/functions

hasq()
{
	local x

	local me=${1}
	shift

	for x in $@
	do
		[[ ${x} = ${me} ]] && return 0
	done

	return 1
}

check_user()
{
	if [[ $(id -u) -ne 0 ]]
	then
		echo "${0}: Must be run as root."
		exit 1
	fi
}

get_current_implem()
{
	local implem

	if [[ -f ${ENV_D} ]]
	then
		source ${ENV_D}
		if [[ -n ${OPENGL_PROFILE} ]]
		then
			implem="${OPENGL_PROFILE}"
		elif [[ -n ${LDPATH} ]]
		then
			implem="${LDPATH%%:*}"
			implem="${implem##*opengl/}"
			implem="${implem%/lib*}"
		fi
		unset LDPATH
		unset OPENGL_PROFILE
	fi

	echo ${implem}
}

get_implementations()
{
	local implems

	for dir in ${PREFIX}/lib{,32,64}/opengl/*
	do
		if [[ -d ${dir} ]] &&
			[[ ${dir##*/} != global ]]
			&& ! hasq ${dir##*/} ${implems}
		then
			implems=${implems:+${implems} }${dir##*/}
		fi
	done

	echo ${implems}
}

print_version()
{
	echo "opengl-update ${VERSION}"
}

print_usage()
{
	# Get grammar right in message
	local IS_ARE IMPLEM_PLURAL

	if [[ $(echo ${AVAIL_IMPLEMS} | wc -w) -eq 1 ]]
	then
		IS_ARE="is"
		IMPLEM_PLURAL=""
	else
		IS_ARE="are"
		IMPLEM_PLURAL="s"
	fi

	print_version

	cat << FOO
Usage: ${0##*/} [<options>] <GL implementation>
       Set the opengl implementation.
       Valid options:
       --use-old:          If an implementation is already set, use that one.
       --prefix=<val>:     Set the source prefix (default: /usr)
       --dst-prefix=<val>: Set the destination prefix (default: /usr)
       --impl-headers:     Use headers provided by this implementation to
                           override golbal ones provided by opengl-update.

Usage: ${0##*/} --get-implementation
       Print the current implementaion

Notes:
       --impl-headers was default in <opengl-update-2.2.

       This utility switches between OpenGL implementations.  There ${IS_ARE}
       $(echo ${AVAIL_IMPLEMS} | wc -w) available implementation${IMPLEM_PLURAL}: ${AVAIL_IMPLEMS}

Examples:
       ${0##*/} xorg
       This will setup things to use libGL.so from X.org.

       ${0##*/} nvidia
       This will setup things to use libGL.so from the nVidia drivers.

FOO
	exit 1
}

parse_options()
{
	local opt

	while [[ ${#} -gt 0 ]]
	do
		opt=${1}
		shift
		case ${opt} in
			--use-old)
				if [[ -n ${ACTION} ]]
				then
					ACTION="error"
					echo "Invalid usage."
				else
					if [[ -n "${CURRENT_GL_IMPLEM}" ]] &&
						hasq ${CURRENT_GL_IMPLEM} ${AVAIL_IMPLEMS}
					then
						ACTION="old-implementation"
					fi
				fi
				;;

			--get-implementation)
				if [[ -n ${ACTION} ]]
				then
					ACTION="error"
					echo "Invalid usage."
				else
					ACTION="get-implementation"
				fi
				;;

			--prefix=*)
				PREFIX=${opt#*=}
				AVAIL_IMPLEMS=$(get_implementations)
				;;

			--dst-prefix=*) DST_PREFIX=${opt#*=} ;;

			--impl-headers) USE_PROFILE_HEADERS="yes" ;;

			--help|-h|-?) ACTION="usage" ;;

			--version) ACTION="version" ;;

			*)
				if hasq ${opt} ${AVAIL_IMPLEMS}
				then
					if [[ ${ACTION} != old-implementation ]]
					then
						if [[ -n ${ACTION} ]]
						then
							ACTION="error"
							echo "Invalid usage."
						else
							ACTION="set-implementation"
							NEW_GL_IMPLEM="${opt}"
						fi
					fi
				else
					echo "Unrecognized option: ${opt}"
					ACTION="error"
				fi
				;;
		esac
	done
}

set-new-implementation()
{
	local GL_IMPLEM=${1}
	local GL_LOCAL

	check_user

	# Set a sane umask... bug #83115
	umask 022

	if ! hasq ${GL_IMPLEM} ${AVAIL_IMPLEMS}
	then
		echo "Invalid profile selected."
		exit 1
	fi

	echo "Switching to ${GL_IMPLEM} OpenGL interface"

	rm -f ${ENV_D} &> /dev/null

	LIBDIRS="lib32 lib lib64"
	for LIBDIR in ${LIBDIRS}
	do
		# Special case handling of lib32 because it can be a symlink to
		# emul libs
		if [[ ${LIBDIR} = lib32 ]]
		then
			[[ -d ${PREFIX}/${LIBDIR}/opengl ]] || continue
		else
			[[ -d ${PREFIX}/${LIBDIR}/opengl ]] &&
				! -h ${PREFIX}/${LIBDIR} ]] || continue
		fi

		# Fallback on xorg if we don't have this implementation for this LIBDIR.
		if [[ ! -d ${PREFIX}/${LIBDIR}/opengl/${GL_IMPLEM} ]]
		then
			GL_LOCAL="xorg"
		else
			GL_LOCAL="${GL_IMPLEM}"
		fi

		mkdir -p ${DST_PREFIX}/${LIBDIR}
		pushd ${DST_PREFIX}/${LIBDIR} &> /dev/null
			# First remove old symlinks
			for file in libGL{,core}.{a,so,la}
			do
				[[ -h ${file} ]] && rm -f ${file}
			done

			# Note that we don't do .so*, just .so on purpose.  The
			# loader knows to look in the profile dir, and the
			# linked just needs the .so
			for file in ${PREFIX}/${LIBDIR}/opengl/${GL_LOCAL}/lib/libGL{,core}.{so,a,la}
			do
				[[ -f ${file} ]] || continue
				[[ -f ${file##*/} ]] && rm -f ${file##*/}

				# Fix libtool archives (#48297)
				if [[ ${file%.la} != ${file} ]]
				then
					sed "s:${PREFIX}/[^/]*/opengl/[^/]*/lib:${DST_PREFIX}/${LIBDIR}:g" ${file} > ${file##*/}
				else
					ln -s ${file}
				fi
			done
		popd &> /dev/null

		if [[ -e ${PREFIX}/${LIBDIR}/opengl/${GL_LOCAL}/lib/tls ]]
		then
			mkdir -p ${DST_PREFIX}/${LIBDIR}/tls
			pushd ${DST_PREFIX}/${LIBDIR}/tls &> /dev/null
				# First remove old symlinks
				for file in libGL{,core}.{a,so,la}
				do
					[[ -h ${file} ]] && rm -f ${file}
				done

				for file in ${PREFIX}/${LIBDIR}/opengl/${GL_LOCAL}/lib/tls/libGL{,core}.{so,a,la}
				do
					[[ -f ${file} ]] || continue
					[[ -f ${file##*/} ]] && rm -f ${file##*/}

					# Fix libtool archives (#48297)
					if [[ ${file%.la} != ${file} ]]
					then
						sed "s:${PREFIX}/[^/]*/opengl/[^/]*/lib:${DST_PREFIX}/${LIBDIR}:g" ${file} > ${file##*/}
					else
						ln -s ${file}
					fi
				done
			popd &> /dev/null
		fi

		local MODULEDIR
		if [[ -e ${DST_PREFIX}/${LIBDIR}/xorg/modules ]]
		then
			MODULEDIR="xorg/modules"
		else
			MODULEDIR="modules"
		fi

		if [[ -e ${PREFIX}/${LIBDIR}/opengl/${GL_LOCAL}/extensions ]]
		then
			mkdir -p ${DST_PREFIX}/${LIBDIR}/${MODULEDIR}/extensions
			pushd ${DST_PREFIX}/${LIBDIR}/${MODULEDIR}/extensions &> /dev/null
				# First remove old symlinks
				for file in libglx.so libglx.a
				do
					[[ -h ${file} ]] && rm -f ${file}
				done

				for file in ${PREFIX}/${LIBDIR}/opengl/${GL_LOCAL}/extensions/*.{so,a,la}
				do
					[[ -f ${file} ]] || continue
					[[ -f ${file##*/} ]] && rm -f ${file##*/}

					# Fix libtool archives (#48297)
					if [[ ${file%.la} != ${file} ]]
					then
						sed "s:${PREFIX}/[^/]*/opengl/[^/]*/lib:${DST_PREFIX}/${LIBDIR}:g" ${file} > ${file##*/}
					else
						ln -s ${file}
					fi
				done
			popd &> /dev/null
		fi

		# Setup the includes
		mkdir -p ${DST_PREFIX}/include/GL
		pushd ${DST_PREFIX}/include/GL &> /dev/null
			for file in gl.h glx.h glxtokens.h glext.h glxext.h glxmd.h glxproto.h
			do
				# IMPORTANT
				# It is preferable currently to use the standard glext.h file
				# however if an OpenGL provider must use a self produced glext.h
				# then it should be installed to ${GL_IMPLEM}/include and the user
				# can add the --impl-headers option to select it.

				if [[ ${USE_PROFILE_HEADERS} = yes ]]
				then
					# Check the profile first.
					if [[ -e ${PREFIX}/${LIBDIR}/opengl/${GL_IMPLEM}/include/${file} ]]
					then
						[[ -f "${file}" || ( -L "${file}" && ! -e "${file}" ) ]] && rm -f ${file}
						ln -s ${PREFIX}/${LIBDIR}/opengl/${GL_IMPLEM}/include/${file}
					fi
					continue
				fi

				if [[ -e ${PREFIX}/${LIBDIR}/opengl/global/include/${file} ]]
				then
					[[ -f "${file}" || ( -L "${file}" && ! -e "${file}" ) ]] && rm -f ${file}
					ln -s ${PREFIX}/${LIBDIR}/opengl/global/include/${file}
				elif [[ -e ${PREFIX}/${LIBDIR}/opengl/${GL_IMPLEM}/include/${file} ]]
				then
					[[ -f "${file}" || ( -L "${file}" && ! -e "${file}" ) ]] && rm -f ${file}
					ln -s ${PREFIX}/${LIBDIR}/opengl/${GL_IMPLEM}/include/${file}
				elif [[ -e ${PREFIX}/${LIBDIR}/opengl/xorg/include/${file} ]]
				then
					[[ -f "${file}" || ( -L "${file}" && ! -e "${file}" ) ]] && rm -f ${file}
					ln -s ${PREFIX}/${LIBDIR}/opengl/xorg/include/${file}
				fi
			done
		popd &> /dev/null

		# Setup the $LDPATH
		ldpath="${ldpath:+${ldpath}:}${PREFIX}/${LIBDIR}/opengl/${GL_LOCAL}/lib"

	done

	local i
	for i in $(echo ${ldpath} | sed "s:\::\ :g")
	do
		echo "LDPATH=\"${i}\"" >> ${ENV_D}
	done
	echo "OPENGL_PROFILE=\"${GL_IMPLEM}\"" >> ${ENV_D}

	env-rebuild

	return 0
}

## START PROGRAM ##

ENV_D="/etc/env.d/03opengl"
NEW_GL_IMPLEM=""
ACTION=""
PREFIX="/usr"
DST_PREFIX="/usr"
AVAIL_IMPLEMS=$(get_implementations)
CURRENT_GL_IMPLEM=$(get_current_implem)
USE_PROFILE_HEADERS="no"
VERSION="@@VERSION@@"

parse_options ${@}

case ${ACTION} in
	get-implementation)
		if [[ -n ${CURRENT_GL_IMPLEM} ]]
		then
			echo ${CURRENT_GL_IMPLEM}
			exit 0
		else
			exit 2
		fi
		;;

	old-implementation)
		set-new-implementation ${CURRENT_GL_IMPLEM}
		exit $?
		;;

	set-implementation)
		if [[ -n ${NEW_GL_IMPLEM} ]]
		then
			set-new-implementation ${NEW_GL_IMPLEM}
			exit $?
		else
			print_usage
			exit 1
		fi
		;;

	version)
		print_version
		exit 0
		;;

	usage)
		print_usage
		exit 0
		;;

	error)
		print_usage
		exit 1
		;;

	*)
		print_usage
		exit 1
		;;
esac
1	#!/bin/bash
2	# Copyright 1999-2004 Gentoo Foundation
3	# Distributed under the terms of the GNU General Public License v2
4	# $Header: /home/cvsd/magellan-cvs/magellan-src/opengl-update/opengl-update.sh,v 1.5 2007-11-14 18:18:47 niro Exp $
5	# Author: Martin Schlemmer <azarah@gentoo.org>
6	# Further modifications by Donnie Berkholz <spyderous@gentoo.org>
7	# Further modifications based off submissions to bug #54984 <cyfred@gentoo.org>
8	# Further modifications by Jeremy Huddleston <eradicator@gentoo.org>
9	#
10	# hacked for use with magellan-linux
11	# <niro@magellan-linux.de>
12	#
13
14	. /etc/init.d/functions
15
16	hasq()
17	{
18	local x
19
20	local me=${1}
21	shift
22
23	for x in $@
24	do
25	[[ ${x} = ${me} ]] && return 0
26	done
27
28	return 1
29	}
30
31	check_user()
32	{
33	if [[ $(id -u) -ne 0 ]]
34	then
35	echo "${0}: Must be run as root."
36	exit 1
37	fi
38	}
39
40	get_current_implem()
41	{
42	local implem
43
44	if [[ -f ${ENV_D} ]]
45	then
46	source ${ENV_D}
47	if [[ -n ${OPENGL_PROFILE} ]]
48	then
49	implem="${OPENGL_PROFILE}"
50	elif [[ -n ${LDPATH} ]]
51	then
52	implem="${LDPATH%%:*}"
53	implem="${implem##*opengl/}"
54	implem="${implem%/lib*}"
55	fi
56	unset LDPATH
57	unset OPENGL_PROFILE
58	fi
59
60	echo ${implem}
61	}
62
63	get_implementations()
64	{
65	local implems
66
67	for dir in ${PREFIX}/lib{,32,64}/opengl/*
68	do
69	if [[ -d ${dir} ]] &&
70	[[ ${dir##*/} != global ]]
71	&& ! hasq ${dir##*/} ${implems}
72	then
73	implems=${implems:+${implems} }${dir##*/}
74	fi
75	done
76
77	echo ${implems}
78	}
79
80	print_version()
81	{
82	echo "opengl-update ${VERSION}"
83	}
84
85	print_usage()
86	{
87	# Get grammar right in message
88	local IS_ARE IMPLEM_PLURAL
89
90	if [[ $(echo ${AVAIL_IMPLEMS} \| wc -w) -eq 1 ]]
91	then
92	IS_ARE="is"
93	IMPLEM_PLURAL=""
94	else
95	IS_ARE="are"
96	IMPLEM_PLURAL="s"
97	fi
98
99	print_version
100
101	cat << FOO
102	Usage: ${0##*/} [<options>] <GL implementation>
103	Set the opengl implementation.
104	Valid options:
105	--use-old: If an implementation is already set, use that one.
106	--prefix=<val>: Set the source prefix (default: /usr)
107	--dst-prefix=<val>: Set the destination prefix (default: /usr)
108	--impl-headers: Use headers provided by this implementation to
109	override golbal ones provided by opengl-update.
110
111	Usage: ${0##*/} --get-implementation
112	Print the current implementaion
113
114	Notes:
115	--impl-headers was default in <opengl-update-2.2.
116
117	This utility switches between OpenGL implementations. There ${IS_ARE}
118	$(echo ${AVAIL_IMPLEMS} \| wc -w) available implementation${IMPLEM_PLURAL}: ${AVAIL_IMPLEMS}
119
120	Examples:
121	${0##*/} xorg
122	This will setup things to use libGL.so from X.org.
123
124	${0##*/} nvidia
125	This will setup things to use libGL.so from the nVidia drivers.
126
127	FOO
128	exit 1
129	}
130
131	parse_options()
132	{
133	local opt
134
135	while [[ ${#} -gt 0 ]]
136	do
137	opt=${1}
138	shift
139	case ${opt} in
140	--use-old)
141	if [[ -n ${ACTION} ]]
142	then
143	ACTION="error"
144	echo "Invalid usage."
145	else
146	if [[ -n "${CURRENT_GL_IMPLEM}" ]] &&
147	hasq ${CURRENT_GL_IMPLEM} ${AVAIL_IMPLEMS}
148	then
149	ACTION="old-implementation"
150	fi
151	fi
152	;;
153
154	--get-implementation)
155	if [[ -n ${ACTION} ]]
156	then
157	ACTION="error"
158	echo "Invalid usage."
159	else
160	ACTION="get-implementation"
161	fi
162	;;
163
164	--prefix=*)
165	PREFIX=${opt#*=}
166	AVAIL_IMPLEMS=$(get_implementations)
167	;;
168
169	--dst-prefix=) DST_PREFIX=${opt#=} ;;
170
171	--impl-headers) USE_PROFILE_HEADERS="yes" ;;
172
173	--help\|-h\|-?) ACTION="usage" ;;
174
175	--version) ACTION="version" ;;
176
177	*)
178	if hasq ${opt} ${AVAIL_IMPLEMS}
179	then
180	if [[ ${ACTION} != old-implementation ]]
181	then
182	if [[ -n ${ACTION} ]]
183	then
184	ACTION="error"
185	echo "Invalid usage."
186	else
187	ACTION="set-implementation"
188	NEW_GL_IMPLEM="${opt}"
189	fi
190	fi
191	else
192	echo "Unrecognized option: ${opt}"
193	ACTION="error"
194	fi
195	;;
196	esac
197	done
198	}
199
200	set-new-implementation()
201	{
202	local GL_IMPLEM=${1}
203	local GL_LOCAL
204
205	check_user
206
207	# Set a sane umask... bug #83115
208	umask 022
209
210	if ! hasq ${GL_IMPLEM} ${AVAIL_IMPLEMS}
211	then
212	echo "Invalid profile selected."
213	exit 1
214	fi
215
216	echo "Switching to ${GL_IMPLEM} OpenGL interface"
217
218	rm -f ${ENV_D} &> /dev/null
219
220	LIBDIRS="lib32 lib lib64"
221	for LIBDIR in ${LIBDIRS}
222	do
223	# Special case handling of lib32 because it can be a symlink to
224	# emul libs
225	if [[ ${LIBDIR} = lib32 ]]
226	then
227	[[ -d ${PREFIX}/${LIBDIR}/opengl ]] \|\| continue
228	else
229	[[ -d ${PREFIX}/${LIBDIR}/opengl ]] &&
230	! -h ${PREFIX}/${LIBDIR} ]] \|\| continue
231	fi
232
233	# Fallback on xorg if we don't have this implementation for this LIBDIR.
234	if [[ ! -d ${PREFIX}/${LIBDIR}/opengl/${GL_IMPLEM} ]]
235	then
236	GL_LOCAL="xorg"
237	else
238	GL_LOCAL="${GL_IMPLEM}"
239	fi
240
241	mkdir -p ${DST_PREFIX}/${LIBDIR}
242	pushd ${DST_PREFIX}/${LIBDIR} &> /dev/null
243	# First remove old symlinks
244	for file in libGL{,core}.{a,so,la}
245	do
246	[[ -h ${file} ]] && rm -f ${file}
247	done
248
249	# Note that we don't do .so*, just .so on purpose. The
250	# loader knows to look in the profile dir, and the
251	# linked just needs the .so
252	for file in ${PREFIX}/${LIBDIR}/opengl/${GL_LOCAL}/lib/libGL{,core}.{so,a,la}
253	do
254	[[ -f ${file} ]] \|\| continue
255	[[ -f ${file##/} ]] && rm -f ${file##/}
256
257	# Fix libtool archives (#48297)
258	if [[ ${file%.la} != ${file} ]]
259	then
260	sed "s:${PREFIX}/[^/]/opengl/[^/]/lib:${DST_PREFIX}/${LIBDIR}:g" ${file} > ${file##*/}
261	else
262	ln -s ${file}
263	fi
264	done
265	popd &> /dev/null
266
267	if [[ -e ${PREFIX}/${LIBDIR}/opengl/${GL_LOCAL}/lib/tls ]]
268	then
269	mkdir -p ${DST_PREFIX}/${LIBDIR}/tls
270	pushd ${DST_PREFIX}/${LIBDIR}/tls &> /dev/null
271	# First remove old symlinks
272	for file in libGL{,core}.{a,so,la}
273	do
274	[[ -h ${file} ]] && rm -f ${file}
275	done
276
277	for file in ${PREFIX}/${LIBDIR}/opengl/${GL_LOCAL}/lib/tls/libGL{,core}.{so,a,la}
278	do
279	[[ -f ${file} ]] \|\| continue
280	[[ -f ${file##/} ]] && rm -f ${file##/}
281
282	# Fix libtool archives (#48297)
283	if [[ ${file%.la} != ${file} ]]
284	then
285	sed "s:${PREFIX}/[^/]/opengl/[^/]/lib:${DST_PREFIX}/${LIBDIR}:g" ${file} > ${file##*/}
286	else
287	ln -s ${file}
288	fi
289	done
290	popd &> /dev/null
291	fi
292
293	local MODULEDIR
294	if [[ -e ${DST_PREFIX}/${LIBDIR}/xorg/modules ]]
295	then
296	MODULEDIR="xorg/modules"
297	else
298	MODULEDIR="modules"
299	fi
300
301	if [[ -e ${PREFIX}/${LIBDIR}/opengl/${GL_LOCAL}/extensions ]]
302	then
303	mkdir -p ${DST_PREFIX}/${LIBDIR}/${MODULEDIR}/extensions
304	pushd ${DST_PREFIX}/${LIBDIR}/${MODULEDIR}/extensions &> /dev/null
305	# First remove old symlinks
306	for file in libglx.so libglx.a
307	do
308	[[ -h ${file} ]] && rm -f ${file}
309	done
310
311	for file in ${PREFIX}/${LIBDIR}/opengl/${GL_LOCAL}/extensions/*.{so,a,la}
312	do
313	[[ -f ${file} ]] \|\| continue
314	[[ -f ${file##/} ]] && rm -f ${file##/}
315
316	# Fix libtool archives (#48297)
317	if [[ ${file%.la} != ${file} ]]
318	then
319	sed "s:${PREFIX}/[^/]/opengl/[^/]/lib:${DST_PREFIX}/${LIBDIR}:g" ${file} > ${file##*/}
320	else
321	ln -s ${file}
322	fi
323	done
324	popd &> /dev/null
325	fi
326
327	# Setup the includes
328	mkdir -p ${DST_PREFIX}/include/GL
329	pushd ${DST_PREFIX}/include/GL &> /dev/null
330	for file in gl.h glx.h glxtokens.h glext.h glxext.h glxmd.h glxproto.h
331	do
332	# IMPORTANT
333	# It is preferable currently to use the standard glext.h file
334	# however if an OpenGL provider must use a self produced glext.h
335	# then it should be installed to ${GL_IMPLEM}/include and the user
336	# can add the --impl-headers option to select it.
337
338	if [[ ${USE_PROFILE_HEADERS} = yes ]]
339	then
340	# Check the profile first.
341	if [[ -e ${PREFIX}/${LIBDIR}/opengl/${GL_IMPLEM}/include/${file} ]]
342	then
343	[[ -f "${file}" \|\| ( -L "${file}" && ! -e "${file}" ) ]] && rm -f ${file}
344	ln -s ${PREFIX}/${LIBDIR}/opengl/${GL_IMPLEM}/include/${file}
345	fi
346	continue
347	fi
348
349	if [[ -e ${PREFIX}/${LIBDIR}/opengl/global/include/${file} ]]
350	then
351	[[ -f "${file}" \|\| ( -L "${file}" && ! -e "${file}" ) ]] && rm -f ${file}
352	ln -s ${PREFIX}/${LIBDIR}/opengl/global/include/${file}
353	elif [[ -e ${PREFIX}/${LIBDIR}/opengl/${GL_IMPLEM}/include/${file} ]]
354	then
355	[[ -f "${file}" \|\| ( -L "${file}" && ! -e "${file}" ) ]] && rm -f ${file}
356	ln -s ${PREFIX}/${LIBDIR}/opengl/${GL_IMPLEM}/include/${file}
357	elif [[ -e ${PREFIX}/${LIBDIR}/opengl/xorg/include/${file} ]]
358	then
359	[[ -f "${file}" \|\| ( -L "${file}" && ! -e "${file}" ) ]] && rm -f ${file}
360	ln -s ${PREFIX}/${LIBDIR}/opengl/xorg/include/${file}
361	fi
362	done
363	popd &> /dev/null
364
365	# Setup the $LDPATH
366	ldpath="${ldpath:+${ldpath}:}${PREFIX}/${LIBDIR}/opengl/${GL_LOCAL}/lib"
367
368	done
369
370	local i
371	for i in $(echo ${ldpath} \| sed "s:\::\ :g")
372	do
373	echo "LDPATH=\"${i}\"" >> ${ENV_D}
374	done
375	echo "OPENGL_PROFILE=\"${GL_IMPLEM}\"" >> ${ENV_D}
376
377	env-rebuild
378
379	return 0
380	}
381
382	## START PROGRAM ##
383
384	ENV_D="/etc/env.d/03opengl"
385	NEW_GL_IMPLEM=""
386	ACTION=""
387	PREFIX="/usr"
388	DST_PREFIX="/usr"
389	AVAIL_IMPLEMS=$(get_implementations)
390	CURRENT_GL_IMPLEM=$(get_current_implem)
391	USE_PROFILE_HEADERS="no"
392	VERSION="@@VERSION@@"
393
394	parse_options ${@}
395
396	case ${ACTION} in
397	get-implementation)
398	if [[ -n ${CURRENT_GL_IMPLEM} ]]
399	then
400	echo ${CURRENT_GL_IMPLEM}
401	exit 0
402	else
403	exit 2
404	fi
405	;;
406
407	old-implementation)
408	set-new-implementation ${CURRENT_GL_IMPLEM}
409	exit $?
410	;;
411
412	set-implementation)
413	if [[ -n ${NEW_GL_IMPLEM} ]]
414	then
415	set-new-implementation ${NEW_GL_IMPLEM}
416	exit $?
417	else
418	print_usage
419	exit 1
420	fi
421	;;
422
423	version)
424	print_version
425	exit 0
426	;;
427
428	usage)
429	print_usage
430	exit 0
431	;;
432
433	error)
434	print_usage
435	exit 1
436	;;
437
438	*)
439	print_usage
440	exit 1
441	;;
442	esac