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configure.ac @ 5276

Last change on this file since 5276 was 5276, checked in by bensch, 19 years ago
orxonox/trunk: configure.ac now has a new way to check for stuff. this should proove more usefull when using osX too.
File size: 20.2 KB

Line
1	##########################################################################
2	# orxonox - the future of 3D-vertical-scrollers #
3	# #
4	# Copyright (C) 2004 orx #
5	# #
6	# This program is free software; you can redistribute it and/or modify #
7	# it under the terms of the GNU General Public License as published by #
8	# the Free Software Foundation; either version 2, or (at your option) #
9	# any later version. #
10	# #
11	# ### File Specific: #
12	# main-programmer: Benjamin Grauer #
13	# co-programmer: ... #
14	# #
15	# This is the main configuration File of autoconf. #
16	# Please edit this file only, if you exactly know what you are doing. #
17	# It is quite fragile, and compiling orxonox on different Platforms #
18	# is only guarantied, if build with the right config. #
19	# #
20	# be sure to visit us at http://www.orxonox.net #
21	##########################################################################
22
23	#########################
24	## AUTOCONF INIT PHASE ##
25	#########################
26	AC_PREREQ(2.56)
27	AC_INIT(orxonox, 0.3.1_alpha, [orxonox-dev at mail.datacore.ch])
28
29	## Detect the canonical host and target build environment.
30	AC_CANONICAL_BUILD
31	AC_CANONICAL_HOST
32	AC_CANONICAL_TARGET
33
34	AM_INIT_AUTOMAKE
35
36	AC_CONFIG_SRCDIR([.])
37	AC_CONFIG_HEADER([config.h])
38
39	#########################
40	## Checks for programs ##
41	#########################
42	AC_PROG_CXX
43	AC_PROG_RANLIB
44	AC_HEADER_STDC
45
46	## THIS IS OUR DEFAULT-DATA-DIRECTORY
47
48	##################################
49	## CHECKING OPTIONAL ARGUMENTS ##
50	##################################
51	#----------------#
52	# Data-Directory #
53	#----------------#
54	DATA_DIR=$datadir
55	echo \$\{prefix\}
56	if test $DATA_DIR = \$\{prefix\}/share ; then
57	echo "not given"
58	DATA_DIR=/usr/share
59	else
60	echo "given: $DATA_DIR"
61	fi
62	AC_DEFINE_UNQUOTED([DATADIR], ["$DATA_DIR"],
63	[Define to the read-only architecture-independent
64	data directory.])
65
66	#-----------------#
67	# shared-lib-path #
68	#-----------------#
69	SHARED_LIB_PATH=no
70	AC_MSG_CHECKING([shared lib path])
71	AC_ARG_WITH([shared-lib-path],
72	AC_HELP_STRING( [--with-shared-lib-path], [Tells the executable, where to look for the shared libraries.]),
73	SHARED_LIB_PATH=$withval)
74	if test x$SHARED_LIB_PATH != xno; then
75	echo "set to $SHARED_LIB_PATH"
76	else
77	echo "no"
78	fi
79
80
81	#-----------------#
82	# DEBUG-statement #
83	#-----------------#
84	DEBUG=no
85	AC_MSG_CHECKING([if DEBUG-mode should be enabled])
86	AC_ARG_ENABLE([debug],
87	AC_HELP_STRING( [--enable-debug], [compiles in debug mode. Lots of debug info about the game.]),
88	DEBUG=$enableval)
89
90	if test x$DEBUG = xno; then
91	echo "no"
92	echo " -> Setting debuglevel to 4. (orxonox is still in Development. It really is needed."
93	DEBUG=4
94	elif test x$DEBUG = xyes; then
95	echo "yes"
96	echo " -> Setting debuglevel to 4. HARD DEBUG MODE!!."
97	DEBUG=4
98	else
99	echo "yes: setting debuglevel to to $DEBUG"
100	fi
101	AC_DEFINE_UNQUOTED(DEBUG, $DEBUG, [in which debug mode we are])
102	AC_SUBST(DEBUG)
103
104	#---------------#
105	# Modular Debug #
106	#---------------#
107	MODULAR_DEBUG=yes
108	AC_MSG_CHECKING([if Modular-DEBUG-mode should be ebabled])
109	AC_ARG_ENABLE([modular-debug],
110	AC_HELP_STRING( [--disable-modular-debug], [compiles in modular-debug mode, that logs differently on the many modules of orxonox.]),
111	MODULAR_DEBUG=$enableval)
112
113	if test x$MODULAR_DEBUG = xno; then
114	echo "no"
115	elif test x$MODULAR_DEBUG = xyes; then
116	echo "yes"
117	AC_DEFINE_UNQUOTED(MODULAR_DEBUG, 1, [if Modular-DUBUG mode is enabled])
118	fi
119
120	#--------------#
121	# GTK-disabled #
122	#--------------#
123	AC_MSG_CHECKING([if gtk should be enabled])
124	AC_ARG_ENABLE([gtk],
125	AC_HELP_STRING( [--disable-gtk],
126	[Prevents GTK from being loaded]), [def_gtk=no], [def_gtk=yes])
127	if test x$def_gtk = xyes; then
128	echo "yes"
129	fi
130	if test x$def_gtk = xno; then
131	echo "no"
132	fi
133
134	#------------------#
135	# libCurl-disabled #
136	#------------------#
137	AC_MSG_CHECKING([if libcURL should be enabled])
138	AC_ARG_ENABLE([curl],
139	AC_HELP_STRING( [--disable-curl],
140	[Prevents libcURL from being loaded]), [def_curl=no], [def_curl=yes])
141	if test x$def_curl = xyes; then
142	echo "yes"
143	fi
144	if test x$def_curl = xno; then
145	echo "no"
146	fi
147
148	#-------------------#
149	# SubProject-enable #
150	#-------------------#
151	def_sub_projects=no
152	AC_MSG_CHECKING([if the SubProjects should be built])
153	AC_ARG_WITH([sub-projects],
154	AC_HELP_STRING( [--with-sub-projects],
155	[also builds the subProjects while make from srcdir]), [def_sub_projects=yes])
156	if test x$def_sub_projects = xyes; then
157	echo "yes"
158	fi
159	if test x$def_sub_projects = xno; then
160	echo "no"
161	fi
162	AM_CONDITIONAL(SUB_PROJECTS, test x$def_sub_projects = xyes)
163
164	#-------------------#
165	# Profiling Enabled #
166	#-------------------#
167	def_profiling=no
168	AC_MSG_CHECKING([if Profiling should be enabled])
169	AC_ARG_ENABLE([profile],
170	AC_HELP_STRING( [--enable-profile],
171	[builds orxonox with profiling support]), [def_profiling=yes])
172	if test x$def_profiling = xyes; then
173	echo "yes"
174	CXXFLAGS="$CXXFLAGS -pg"
175	fi
176	if test x$def_profiling = xno; then
177	echo "no"
178	fi
179
180	#----------------#
181	# efence Enabled #
182	#----------------#
183	def_efence=no
184	AC_MSG_CHECKING([if efence should be enabled])
185	AC_ARG_ENABLE([efence],
186	AC_HELP_STRING( [--enable-efence],
187	[builds orxonox with efence support]), [def_efence=yes])
188	if test x$def_efence = xyes; then
189	echo "yes"
190	fi
191	if test x$def_efence = xno; then
192	echo "no"
193	fi
194
195	#----------------------#
196	# Documentation-enable #
197	#----------------------#
198	def_documentation=no
199	AC_MSG_CHECKING([if the Documentation should be build by default])
200	AC_ARG_ENABLE([documentation],
201	AC_HELP_STRING( [--enable-documentation],
202	[also builds the sDocumentation while make from srcdir]), [def_documentation=yes])
203	if test x$def_documentation = xyes; then
204	echo "yes"
205	fi
206	if test x$def_documentation = xno; then
207	echo "no"
208	fi
209	AM_CONDITIONAL(DOCUMENTATION, test x$def_documentation = xyes)
210
211	#######################
212	## PROGRAMM CHECKING ##
213	## 3. party Programs ##
214	#######################
215
216	#----------------------#
217	# checking for Doxygen #
218	#----------------------#
219	AC_PATH_PROG(DOXYGEN, doxygen)
220	AM_CONDITIONAL(DOXYGEN, test $DOXYGEN)
221
222	#--------------------#
223	# checking for gprof #
224	#--------------------#
225	AC_PATH_PROG(GPROF, gprof)
226
227	#-------------------------#
228	# checking for pkg-config #
229	#-------------------------#
230	if test x$def_gtk = xyes; then
231	AC_PATH_PROG(PKG_CONFIG, pkg-config)
232	fi
233
234
235	#########################
236	## CHECKING FOR SYSTEM ##
237	#########################
238	## here the system is checked, and openGL is included
239	## also checking for SDL on differen Systems
240
241	AC_MSG_CHECKING([for System])
242	## checking for openGL-environment and other sys-specific parameters
243	case "$target" in
244
245	###########
246	#---------#
247	# WINDOWS #
248	#---------#
249	###########
250	--mingw32*)
251	echo "mingw-WINDOWS detected"
252
253	CPPFLAGS="-I/usr/include -I/mingw/include $CPPFLAGS"
254
255	mingw="yes"
256	MSBITFIELDS="-mms-bitfields"
257	MWINDOWS="-mwindows"
258
259	#--------#
260	# MIN-GW #
261	#--------#
262	# checking for mingw32
263	AC_CHECK_LIB([mingw32], [main], FOUND_mingw32=yes)
264	if test x$FOUND_mingw32 = xyes; then
265	LIBS="$LIBS -lmingw32"
266	fi
267
268	#---------------#
269	# open-GL (win) #
270	#---------------#
271	# checking gl header
272	AC_CHECK_HEADERS(GL/gl.h ,,
273	[AC_MSG_ERROR([cannot find opengl headers])])
274	# checking for Windows openGl library
275	AC_CHECK_LIB([opengl32], [main], [FOUND_GL=yes; LIBS="$LIBS -lopengl32"])
276	if test x$FOUND_GL != xyes ; then
277	echo "------------------"
278	echo "opengl not found."
279	echo "please install the opengl package which can be found at http://www.opengl.org"
280	echo "------------------"
281	exit -1
282	fi
283
284	# cheking for GLU-header
285	AC_CHECK_HEADERS([GL/glu.h] ,,
286	[AC_MSG_ERROR([cannot find opengl headers]) ])
287
288	# checking for libGLU
289	AC_CHECK_LIB([glu32], [main], [FOUND_GLU=yes; LIBS="$LIBS -lGLU32"])
290	if test x$FOUND_GLU != xyes ; then
291	echo "------------------"
292	echo "GLU library not found."
293	echo "please install the GLU library, that should come with openGL, which can be found at http://www.opengl.org"
294	echo "------------------"
295	exit -1
296	fi
297
298	# checking glew header
299	AC_CHECK_HEADERS(GL/glew.h ,,
300	[AC_MSG_ERROR([cannot find opengl extension wrangler headers]) ])
301	# checking for Windows glew library
302	AC_CHECK_LIB([glew32], [main], [FOUND_GLEW=yes; LIBS="$LIBS -lglew32"])
303	if test x$FOUND_GLEW != xyes ; then
304	echo "------------------"
305	echo "opengl extension wrangler not found."
306	echo "please install the glew package which can be found at http://glew.sourceforge.net"
307	echo "------------------"
308	exit -1
309	fi
310
311	#--------#
312	# openAL #
313	#--------#
314	# checking for openAL-headers
315	AC_CHECK_HEADERS([AL/al.h] ,,
316	[AC_MSG_ERROR([cannot find openAL header.])])
317	# checking for openAL-lib
318	AC_CHECK_LIB([OpenAL32], [main], [FOUND_OPENAL=yes; LIBS="$LIBS -lOpenAL32"])
319	AC_CHECK_LIB([ALut], [main], [FOUND_ALUT=yes; LIBS="$LIBS -lALut"])
320	if test x$FOUND_OPENAL != xyes ; then
321	echo "------------------"
322	echo "openal library not found."
323	echo "please install the openal library, which can be found at http://www.openal.org"
324	echo "------------------"
325	exit -1
326	fi
327
328
329	#-----------#
330	# SDL(win) #
331	#-----------#
332	# checking for SDL-headers
333	AC_CHECK_HEADERS([SDL/SDL.h] ,,
334	[AC_MSG_ERROR([cannot find SDL headers]) ])
335
336	#checking for libSDL
337	AC_CHECK_LIB([sdlmain], [main], [FOUND_sdlmain=yes; LIBS="$LIBS -lsdlmain"])
338	if test x$FOUND_sdlmain != xyes ; then
339	echo "------------------"
340	echo "SDL library not found."
341	echo "please install the SDL library, which can be found at http://www.libsdl.org"
342	echo "------------------"
343	exit 1
344	fi
345	AC_CHECK_LIB([sdl], [main], [FOUND_SDL=yes; LIBS="$LIBS -lsdl"])
346	if test x$FOUND_SDL != xyes ; then
347	echo "------------------"
348	echo "SDL library not found."
349	echo "please install the SDL library, which can be found at http://www.libsdl.org"
350	echo "------------------"
351	exit -1
352	fi
353
354	;;
355
356	#########
357	#-------#
358	# LINUX #
359	#-------#
360	#########
361	--linux*)
362	echo "Linux detected"
363
364	Linux="yes"
365
366	##CPPFLAGS="-I/usr/include $CPPFLAGS"
367	##LDFLAGS="-L/usr/lib $LDFLAGS"
368	if test x$SHARED_LIB_PATH != xno; then
369	echo "setting new LDFLAGS with $SHARED_LIB_PATH"
370	LDFLAGS="-Wl,-rpath,$SHARED_LIB_PATH -L$SHARED_LIB_PATH $LDFLAGS"
371	fi
372
373	# checking gl header
374	AC_CHECK_HEADERS([GL/gl.h] ,,
375	[AC_MSG_ERROR([cannot find opengl headers]) ])
376
377	# checking for Unix GL
378	AC_CHECK_LIB([GL], [main], [FOUND_GL=yes; LIBS="$LIBS -lGL"])
379	if test x$FOUND_GL != xyes ; then
380	echo "------------------"
381	echo "opengl not found."
382	echo "please install the opengl package which can be found at http://www.opengl.org"
383	echo "------------------"
384	exit -1
385	fi
386
387	# cheking for GLU-header
388	AC_CHECK_HEADERS([GL/glu.h] ,,
389	[AC_MSG_ERROR([cannot find opengl headers]) ])
390	### FIXME ### THIS CHECK SHOULD WORK EVERYWHERE !!
391	# AC_CHECK_LIB([GLU], [main], [FOUND_GLU=yes; LIBS="$LIBS -lGLU"])
392	# if test x$FOUND_GLU != xyes ; then
393	FOUND_GLU=yes
394	LIBS="$LIBS -lGLU"
395	# else
396	# echo "------------------"
397	# echo "GLU library not found."
398	# echo "please install the GLU library, that should come with openGL, which can be found at http://www.opengl.org"
399	# echo "------------------"
400	# exit -1
401	# fi
402
403	# checking for GLEW-headers
404	AC_CHECK_HEADERS([GL/glew.h] ,,
405	[AC_MSG_ERROR([cannot find glew headers]) ])
406	# checking for GLEW-lib
407	AC_CHECK_LIB([GLEW], [main], [FOUND_GLEW=yes; LIBS="$LIBS -lGLEW"])
408	if test x$FOUND_GLEW != xyes ; then
409	echo "------------------"
410	echo "glew not found."
411	echo "please install the glew package which can be found at http://glew.sourceforge.net"
412	echo "------------------"
413	exit -1
414	fi
415
416	#--------#
417	# openAL #
418	#--------#
419	# checking for openAL-headers
420	AC_CHECK_HEADERS([AL/al.h] ,,
421	[AC_MSG_ERROR([cannot find openAL header.])])
422	# checking for openAL-lib
423	AC_CHECK_LIB([openal], [main], [FOUND_OPENAL=yes; LIBS="$LIBS -lopenal"])
424	if test x$FOUND_OPENAL != xyes ; then
425	echo "------------------"
426	echo "openal library not found."
427	echo "please install the openal library, which can be found at http://www.openal.org"
428	echo "------------------"
429	exit -1
430	fi
431	# checking for alut
432	AC_CHECK_HEADERS([AL/alut.h] ,,
433	[AC_MSG_ERROR([cannot find openAL Utility Toolkit (alut) header.])])
434	AC_CHECK_LIB([alut], [main], [FOUND_ALUT=yes; LIBS="-lalut $LIBS"])
435
436	#-----#
437	# SDL #
438	#-----#
439	# checking for SDL
440	AC_MSG_CHECKING([for SDL-version])
441	SDL_VERSION=`sdl-config --version`
442	echo $SDL_VERSION
443
444	CPPFLAGS="$CPPFLAGS `sdl-config --cflags`"
445	AC_CHECK_HEADERS([SDL.h] ,,
446	[AC_CHECK_HEADERS([SDL/SDL.h] ,,AC_MSG_ERROR([cannot find SDL header. please download from libsdl.org])]))
447	LIBS="`sdl-config --libs` $LIBS"
448	AC_CHECK_LIB([SDL], [main], [FOUND_SDL=yes])
449	if test x$FOUND_SDL != xyes ; then
450	echo "------------------"
451	echo "SDL library not found."
452	echo "please install the SDL library, which can be found at http://www.libsdl.org"
453	echo "------------------"
454	exit -1
455	fi
456
457	;;
458
459	#############
460	#-----------#
461	# MAC -OS X #
462	#-----------#
463	#############
464	darwin)
465	echo "OS X detected"
466
467	osX="yes"
468
469	CPPFLAGS="-I/sw/include -I/sw/include $CPPFLAGS"
470	# checking gl header
471	AC_CHECK_HEADERS([OpenGL/gl.h] ,,
472	[AC_MSG_ERROR([cannot find opengl headers]) ])
473	# cheking for GLU-header
474	AC_CHECK_HEADERS([OpenGL/glu.h] ,,
475	[AC_MSG_ERROR([cannot find opengl headers]) ])
476
477	LIBS="$LIBS -framework OpenGL"
478
479
480	## SDL-check
481	SDL_CFLAGS=`sdl-config --cflags`
482	SDL_LIBS=`sdl-config --libs`
483	CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
484	LIBS="$LIBS $SDL_LIBS"
485
486
487	# checking for SDL-headers
488	# AC_CHECK_HEADERS(SDL/SDL.h ,,
489	# [AC_MSG_ERROR([cannot find SDL headers]) ])
490
491	## checking for SDL
492	# SDL_VERSION=1.2.7
493	# AM_PATH_SDL($SDL_VERSION,
494	# :,
495	# AC_MSG_ERROR([*** SDL version $SDL_VERSION not found!])
496	# )
497
498
499	;;
500
501	*)
502	;;
503	esac
504
505	AC_SUBST(MSBITFIELDS)
506
507	###################################
508	## CHECKING FOR HEADERS AND LIBS ##
509	###################################
510
511	#---------#
512	# SDL_ttf #
513	#---------#
514	# checking for SDL_ttf-headers
515	AC_CHECK_HEADERS([SDL_ttf.h] ,,
516	[AC_CHECK_HEADERS([SDL/SDL_ttf.h] ,,AC_MSG_ERROR([cannot find SDL_ttf header.])]))
517	# checking for SDL_ttf-lib
518	AC_CHECK_LIB([SDL_ttf], [TTF_OpenFont], [FOUND_SDL_ttf=yes; LIBS="$LIBS -lSDL_ttf"])
519	if test x$FOUND_SDL_ttf != xyes ; then
520	echo "------------------"
521	echo "SDL_ttf library not found."
522	echo "please install the SDL_ttf library, which can be found at http://www.libsdl.org/projects/SDL_ttf/"
523	echo "------------------"
524	exit -1
525	fi
526
527	#-----------#
528	# SDL_Image #
529	#-----------#
530	# checking for SDL_image-headers
531	AC_CHECK_HEADERS([SDL_image.h] ,,
532	[AC_CHECK_HEADERS([SDL/SDL_image.h],, AC_MSG_ERROR([SDL_image header not found.]))])
533	# checking for SDL_image-lib
534	AC_CHECK_LIB([SDL_image], [main], [FOUND_SDL_image=yes; LIBS="$LIBS -lSDL_image"])
535	if test x$FOUND_SDL_image != xyes ; then
536	echo "------------------"
537	echo "SDL_image library not found."
538	echo "please install the SDL_image library, which can be found at http://www.libsdl.org/projects/SDL_image/"
539	echo "------------------"
540	exit -1
541	fi
542
543	#-----#
544	# ogg #
545	#-----#
546	# checking for ogg-headers
547	AC_CHECK_HEADERS([ogg/ogg.h] ,,
548	[AC_MSG_ERROR([cannot find ogg header.])])
549	# checking for ogg-lib
550	AC_CHECK_LIB([ogg], [main], [FOUND_ogg=yes; LIBS="$LIBS -logg"])
551	if test x$FOUND_ogg != xyes ; then
552	echo "------------------"
553	echo "ogg library not found."
554	echo "please install the ogg library, which can be found at http://www.xiph.org/ogg/vorbis/index.html"
555	echo "------------------"
556	exit -1
557	fi
558
559	#--------#
560	# vorbis #
561	#--------#
562	# checking for vorbis-lib
563	AC_CHECK_LIB([vorbis], [main], [FOUND_vorbis=yes; LIBS="$LIBS -lvorbis"])
564	if test x$FOUND_vorbis != xyes ; then
565	echo "------------------"
566	echo "vorbis library not found."
567	echo "please install the vorbis library, which can be found at http://www.xiph.org/ogg/vorbis/index.html"
568	echo "------------------"
569	exit -1
570	fi
571
572	#------------#
573	# vorbisfile #
574	#------------#
575	# checking for vorbis-headers
576	AC_CHECK_HEADERS([vorbis/vorbisfile.h] ,,
577	[AC_MSG_ERROR([cannot find vorbisfile header.])])
578	# checking for vorbisfile-lib
579	AC_CHECK_LIB([vorbisfile], [main], [FOUND_vorbisfile=yes; LIBS="$LIBS -lvorbisfile"])
580	if test x$FOUND_vorbisfile != xyes ; then
581	echo "------------------"
582	echo "vorbisfile library not found."
583	echo "please install the vorbisfile library, which can be found at http://www.xiph.org/ogg/vorbis/index.html"
584	echo "------------------"
585	exit -1
586	fi
587
588
589	#---------#
590	# libcURL #
591	#---------#
592	if test x$def_curl = xyes; then
593	AC_CHECK_HEADERS([curl/curl.h], [curlHeader=yes], [curlHeader=no])
594	AC_CHECK_LIB([curl], [main], [FOUND_curl=yes])
595	if test x$curlHeader = xyes & test x$FOUND_curl = xyes ; then
596	have_curl=yes
597	CURL_LIBS=`curl-config --libs`
598	CURLCFLAGS=`curl-config --cflags`
599	AC_DEFINE_UNQUOTED(HAVE_CURL, 1, [if we have CURL])
600	else
601	have_curl=no
602	fi
603
604	fi
605	AC_SUBST(CURL_LIBS)
606	AC_SUBST(CURL_CFLAGS)
607	AM_CONDITIONAL(HAVE_CURL, test x$have_curl = xyes)
608
609	#--------#
610	# efence #
611	#--------#
612	if test x$def_efence = xyes ; then
613	AC_CHECK_LIB([efence], [main], [FOUND_efence=yes; LIBS="$LIBS -lefence"])
614	if test x$FOUND_efence != xyes ; then
615	echo "efence was requested, but is not installed!! going on"
616	fi
617
618	fi
619
620	#-----#
621	# GTK #
622	#-----#
623	if test x$def_gtk = xyes; then
624	#PKG_CHECK_MODULES(GTK2, gtk+-2.0 >= 2.0.3 gthread-2.0 >= 2.0.3, have_gtk2=yes, have_gtk2=no)
625	AC_MSG_CHECKING([for gtk2.0])
626	if `$PKG_CONFIG --exists gtk+-2.0`; then
627	echo "yes"
628	have_gtk2=yes
629	GTK2_LIBS=`$PKG_CONFIG --libs gtk+-2.0`
630	GTK2_CFLAGS=`$PKG_CONFIG --cflags gtk+-2.0`
631	AC_DEFINE_UNQUOTED(HAVE_GTK2, 1, [if we have GTK2])
632	if test $DEBUG -ge 3; then
633	echo "cflags: $GTK2_CFLAGS"
634	echo "libs: $GTK2_LIBS"
635	fi
636	else
637	echo "no"
638	fi
639
640	fi
641	AC_SUBST(GTK2_LIBS)
642	AC_SUBST(GTK2_CFLAGS)
643	AM_CONDITIONAL(HAVE_GTK2, test x$have_gtk2 = xyes)
644
645
646	# FIXME: Replace `main' with a function in `-lm':
647	AC_CHECK_LIB([m], [main])
648
649
650	# Checks for header files.
651	AC_HEADER_STDC
652	AC_CHECK_HEADERS([stdlib.h string.h])
653
654	# Checks for typedefs, structures, and compiler characteristics.
655	AC_HEADER_STDBOOL
656
657	# Checks for library functions.
658	AC_FUNC_MALLOC
659	AC_CHECK_FUNCS([bzero sqrt])
660
661	######################
662	## OUTPUT CONFIGURE ##
663	######################
664	AC_CONFIG_FILES([Makefile
665	src/Makefile
666	src/lib/Makefile
667	src/lib/graphics/Makefile
668	src/lib/graphics/importer/Makefile
669	src/lib/graphics/spatial_separation/Makefile
670	src/lib/sound/Makefile
671	src/lib/event/Makefile
672	src/lib/physics/Makefile
673	src/lib/particles/Makefile
674	src/lib/collision_detection/Makefile
675	src/lib/shell/Makefile
676	src/lib/gui/Makefile
677	src/lib/tinyxml/Makefile
678	src/subprojects/Makefile
679	src/subprojects/testmain/Makefile
680	src/subprojects/importer/Makefile
681	src/subprojects/particles/Makefile
682	src/subprojects/collision_detection/Makefile
683	])
684
685	AC_OUTPUT

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