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Contents of /gnash/macros/ffmpeg.m4

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Revision 1.56 - (show annotations) (download)
Fri Jun 6 19:30:41 2008 UTC (9 years, 3 months ago) by nelsonrn
Branch: MAIN
CVS Tags: HEAD
Changes since 1.55: +13 -16 lines
* macros/ffmpeg.m4: Previous method for location of ffmpeg
  libraries didn't work on Mandriva.  Current method should be
  more supportable.
* ..: throw up our hands and give up if we can't autolocate
  avcodec.h; suggest that they use --with-ffmpeg-incl.
1 dnl
2 dnl Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
3 dnl
4 dnl This program is free software; you can redistribute it and/or modify
5 dnl it under the terms of the GNU General Public License as published by
6 dnl the Free Software Foundation; either version 3 of the License, or
7 dnl (at your option) any later version.
8 dnl
9 dnl This program is distributed in the hope that it will be useful,
10 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
11 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 dnl GNU General Public License for more details.
13 dnl You should have received a copy of the GNU General Public License
14 dnl along with this program; if not, write to the Free Software
15 dnl Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
16
17
18 AC_DEFUN([GNASH_PATH_FFMPEG],
19 [
20
21 dnl Backup LIBS and CFLAGS vars, we'll add user-specified dirs there
22 backupLIBS="$LIBS"
23 backupCFLAGS="$CFLAGS"
24
25 dnl Did they tell us where the header is?
26 AC_ARG_WITH(ffmpeg_incl, AC_HELP_STRING([--with-ffmpeg-incl], [directory where ffmpeg headers are]), with_ffmpeg_incl=${withval})
27 AC_CACHE_VAL(ac_cv_path_ffmpeg_incl,[
28 if test x"${with_ffmpeg_incl}" != x ; then
29 avcodec_h=""
30 if test -f ${with_ffmpeg_incl}/ffmpeg/avcodec.h ; then
31 ac_cv_path_ffmpeg_incl="-I`(cd ${with_ffmpeg_incl}; pwd)`"
32 avcodec_h="${with_ffmpeg_incl}/ffmpeg/avcodec.h"
33 fi
34 if test -f ${with_ffmpeg_incl}/libavcodec/avcodec.h ; then
35 ac_cv_path_ffmpeg_incl="-I`(cd ${with_ffmpeg_incl}; pwd)`"
36 if test x$avcodec_h != x; then
37 AC_MSG_ERROR([${with_ffmpeg_incl} directory contains both the ffmpeg/avcodec.h and libavcodec/avcodec.h headers])
38 fi
39 avcodec_h="${with_ffmpeg_incl}/libavcodec/avcodec.h"
40 fi
41 if test x$avcodec_h != x; then
42 CFLAGS="$ac_cv_path_ffmpeg_incl $CFLAGS"
43 else
44 AC_MSG_ERROR([${with_ffmpeg_incl} directory contains neither the ffmpeg/avcodec.h nor libavcodec/avcodec.h header])
45 fi
46 topdir=${with_ffmpeg_incl}
47 fi
48 ])
49
50 if test x${cross_compiling} = xno; then
51 AC_MSG_CHECKING([location of avcodec.h using pkgconfig])
52 if test x"$PKG_CONFIG" != x -a x"${ac_cv_path_ffmpeg_incl}" = x; then
53 if $PKG_CONFIG --exists libavcodec; then
54 # Some systems return /usr/include/ffmpeg, others /usr/include.
55 # We use #include <ffmpeg/avcodec.h> everywhere so weed out funny
56 # values into the short form.
57
58 # Here pkg-config outputs two spaces on the end, so match those too!
59 ac_cv_path_ffmpeg_incl=`$PKG_CONFIG --cflags libavcodec | sed 's:/ffmpeg *$::'`
60 CFLAGS="$ac_cv_path_ffmpeg_incl $CFLAGS"
61 # ac_cv_path_ffmpeg_incl might include several paths (e.g. pointers to
62 # external libraries used by ffmpeg). Let's find the right one.
63 for i in `$PKG_CONFIG --cflags-only-I libavcodec |sed -e 's:-I::g'`; do
64 if test -e "$i"/avcodec.h -o \
65 -e "$i"/ffmpeg/avcodec.h -o \
66 -e "$i"/libavcodec/avcodec.h; then
67 topdir="$i"
68 break
69 fi
70 done
71 else
72 # Let's see if ffmpeg is installed without using pkgconfig...
73 for i in /usr/include /usr/local/include /opt/ffmpeg/include; do
74 if test -e "$i"/ffmpeg/avcodec.h -o \
75 -e "$i"/libavcodec/avcodec.h; then
76 topdir="$i"
77 break
78 fi
79 done
80 fi
81 # Again adjust for ffmpeg/ foolery
82 topdir=`echo "$topdir" | sed 's:/ffmpeg *$::'`
83 # Gets "" if not installed
84 if test x"$topdir" != x; then
85 if test -e "$topdir/ffmpeg/avcodec.h"; then
86 avcodec_h="$topdir/ffmpeg/avcodec.h"
87 else
88 avcodec_h="$topdir/libavcodec/avcodec.h"
89 fi
90 fi
91 fi
92 AC_MSG_RESULT($avcodec_h)
93 fi
94
95 dnl incllist is inherited from configure.ac.
96 if test x"${ac_cv_path_ffmpeg_incl}" = x ; then
97 AC_MSG_CHECKING([location of avcodec.h using incllist])
98 for i in $incllist; do
99 if test -f $i/ffmpeg/avcodec.h; then
100 ac_cv_path_ffmpeg_incl="-I$i"
101 CFLAGS="$ac_cv_path_ffmpeg_incl $CFLAGS"
102 topdir=$i
103 avcodec_h="$i/ffmpeg/avcodec.h"
104 break
105 fi
106 if test -f $i/libavcodec/avcodec.h; then
107 ac_cv_path_ffmpeg_incl="-I$i"
108 CFLAGS="$ac_cv_path_ffmpeg_incl $CFLAGS"
109 topdir=$i
110 avcodec_h="$i/libavcodec/avcodec.h"
111 break
112 fi
113 done
114 AC_MSG_RESULT($avcodec_h)
115 fi
116
117 if test x"${ac_cv_path_ffmpeg_incl}" = x; then
118 AC_MSG_ERROR([Cannot find ffmpeg/avcodec.h. Use --with-ffmpeg-incl= to specify the location of the *directory* holding avcodec.h])
119 else
120 if echo $avcodec_h | grep -q ffmpeg; then
121 AC_DEFINE(HAVE_FFMPEG_AVCODEC_H, 1, [Define if you have avcodec.h installed.])
122 else
123 AC_DEFINE(HAVE_LIBAVCODEC_AVCODEC_H, 1, [Define if you have avcodec.h installed.])
124 fi
125 fi
126
127 dnl Find and check libavcodec version number to make sure we have a usable
128 dnl version and to enable/disable features according to version.
129 dnl We need LIBAVCODEC VERSION of at least 51.29.0 to get avcodec_decode_audio2
130
131 dnl We try to get the avcodec version as a decimal number
132 dnl so that we can compare it numerically against what we require.
133 dnl
134 dnl This previous version makes ffmpeg fail and then grubs the version string
135 dnl out of the resulting usage message e.g. " libavcodec version: 51.40.2"
136 dnl Early versions of ffmpeg do not output this string at all.
137 dnl
138 dnl AC_PATH_PROG(FFMPEG, ffmpeg, ,[${pathlist}])
139 dnl if test "x$FFMPEG" = "x" ; then
140 dnl ffmpeg_version=`$FFMPEG uglyhack 2>&1 | grep "libavcodec version" | cut -d ' ' -f 5 | tr -d '.'`
141 dnl if test "$ffmpeg_version" -lt 51290; then
142 dnl AC_MSG_ERROR([])
143 dnl fi
144 dnl fi
145 dnl
146 dnl These days we check avcodec.h and pick the version out of the constants,
147 dnl simply throwing away all non-digits.
148 dnl
149 dnl In earlier versions we have:
150 dnl #define FFMPEG_VERSION_INT 0x000409
151 dnl #define FFMPEG_VERSION "0.4.9-pre1"
152 dnl #define LIBAVCODEC_BUILD 4731
153 dnl #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
154 dnl #define LIBAVCODEC_VERSION FFMPEG_VERSION
155 dnl
156 dnl elsewhere, FFMPEG_VERSION may also be the quoted string "CVS"
157 dnl
158 dnl This changed from the above to
159 dnl #define LIBAVCODEC_VERSION_INT ((49<<16)+(0<<8)+0)
160 dnl #define LIBAVCODEC_VERSION 49.0.0
161 dnl #define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
162 dnl (note, LIBAVCODEC_VERSION also changes from a quoted string to unquoted)
163 dnl see http://lists.mplayerhq.hu/pipermail/ffmpeg-cvslog/2005-July/000570.html
164 dnl
165 dnl
166 dnl This changed from the above to
167 dnl #define LIBAVCODEC_VERSION_MAJOR 51
168 dnl #define LIBAVCODEC_VERSION_MINOR 54
169 dnl #define LIBAVCODEC_VERSION_MICRO 0
170 dnl
171 dnl #define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
172 dnl LIBAVCODEC_VERSION_MINOR, \
173 dnl LIBAVCODEC_VERSION_MICRO)
174 dnl #define LIBAVCODEC_VERSION AV_VERSION(LIBAVCODEC_VERSION_MAJOR, \
175 dnl LIBAVCODEC_VERSION_MINOR, \
176 dnl LIBAVCODEC_VERSION_MICRO)
177
178 dnl Those deb-heads at Debian redefine LIBAVCODEC_VERSION in their versions to
179 dnl (e.g.) 1d.51.38.0 or dnl 0d.51.11.0 - we need to discard the prefixed
180 dnl rubbish.
181 dnl
182 dnl Other values or LIBAVCODEC_VERSION spotted in the wild:
183 dnl 50.0.0 50.5.0 51.7.0 51.8.0 0d.51.8.0 51.40.4
184 dnl presumably this will change to 52.0.0 at some point...
185 dnl
186 dnl We can ignore the very early versions because 51.10.0 is necessary to decode
187 dnl Flash video at all. However the current solution will incorrectly succeed
188 dnl on early debian/ubuntu 1d.* version numbers and incorrectly fail
189 dnl when 52.0.0 happens.
190 dnl
191 dnl The most reliable way is to compile a test program to print the value of
192 dnl LIBAVCODEC_BUILD, which got up to dnl 4718 at version 0.4.9-pre1,
193 dnl then changed to (major<<16 + minor<<8 + micro) from then on.
194 dnl There is code to do this in transcode's configure.in, but when
195 dnl cross-compiling we cannot run a test program, which suggests that
196 dnl a modified form of grepping may be better, making sure all old kinds of
197 dnl version numbering fail gracefully.
198
199 # Check avcodec version number, if it was found
200 if test x"${avcodec_h}" != x; then
201
202 AC_MSG_CHECKING([ffmpeg version])
203 ffmpeg_version=`$EGREP "define LIBAVCODEC_VERSION_MAJOR " ${avcodec_h} | sed -e "s%[[^0-9]]%%g"``$EGREP "define LIBAVCODEC_VERSION_MINOR " ${avcodec_h} | sed -e "s%[[^0-9]]%%g"``$EGREP "define LIBAVCODEC_VERSION_MICRO " ${avcodec_h} | sed -e "s%[[^0-9]]%%g"`
204 ffmpeg_num_version=$ffmpeg_version
205 if test x"${ffmpeg_version}" = x ; then
206
207 ffmpeg_version=`$EGREP "define LIBAVCODEC_VERSION " ${avcodec_h} | sed -e "s%[[^0-9]]%%g"`
208 ffmpeg_num_version=$ffmpeg_version
209
210 if test x"${ffmpeg_version}" = x ; then
211 ffmpeg_version=`$EGREP "define LIBAVCODEC_BUILD " ${avcodec_h} | sed -e "s%[[^0-9.]]%%g"`
212 ffmpeg_num_version=$ffmpeg_version
213 fi
214 fi
215
216 AC_MSG_RESULT($ffmpeg_num_version)
217
218 dnl AC_EGREP_HEADER(avcodec_decode_audio2, ${avcodec_h}, [avfound=yes], [avfound=no])
219
220 if test "$ffmpeg_num_version" -lt 51110; then
221 AC_MSG_WARN([Wrong ffmpeg/libavcodec version! 51.11.0 or greater required])
222 else
223 ffmpeg_version=ok
224 fi
225
226 if test "$ffmpeg_num_version" -gt 51280; then
227 AC_DEFINE(FFMPEG_AUDIO2, 1, [Define if avcodec_decode_audio2 can be used.])
228 fi
229
230 if test "$ffmpeg_num_version" -lt 51270; then
231 AC_MSG_WARN([This version of ffmpeg/libavcodec is not able to play VP6 encoded video!])
232 else
233 AC_DEFINE(FFMPEG_VP6, 1, [Define if ffmpeg can play VP6.])
234 fi
235 else
236 AC_MSG_WARN([Could not check ffmpeg version (dunno where avcodec.h is)])
237 ffmpeg_version=ok # trust the user-specified dir
238 fi
239
240 # Eliminate the pointless -I/usr/include, which can happen
241 if test x"${ac_cv_path_ffmpeg_incl}" != x \
242 -a x"${ac_cv_path_ffmpeg_incl}" != x-I/usr/include ; then
243 FFMPEG_CFLAGS="${ac_cv_path_ffmpeg_incl}"
244 else
245 FFMPEG_CFLAGS=""
246 fi
247
248 AC_MSG_CHECKING([for avformat.h])
249 if test -f "${topdir}/ffmpeg/avformat.h"; then
250 AC_DEFINE(HAVE_FFMPEG_AVFORMAT_H, 1, [Define if avformat.h is found])
251 avformat_h="${topdir}/ffmpeg/avformat.h"
252 else
253 if test -f "${topdir}/libavformat/avformat.h"; then
254 AC_DEFINE(HAVE_LIBAVFORMAT_AVFORMAT_H, 1, [Define if avformat.h is found])
255 avformat_h="${topdir}/libavformat/avformat.h"
256 else
257 avformat_h=""
258 fi
259 fi
260 AC_MSG_RESULT($avformat_h)
261
262 dnl look for swscale.h, but ignore versions older than 51.40.3
263 if test $ffmpeg_num_version -gt 51403; then
264 if test -f "${topdir}/ffmpeg/swscale.h"; then
265 AC_DEFINE(HAVE_FFMPEG_SWSCALE_H, 1, [Define if swscale.h is found])
266 fi
267 if test -f "${topdir}/libswscale/swscale.h"; then
268 AC_DEFINE(HAVE_LIBSWSCALE_SWSCALE_H, 1, [Define if swscale.h is found])
269 fi
270 fi
271
272 dnl Look for the library
273 AC_ARG_WITH(ffmpeg_lib, AC_HELP_STRING([--with-ffmpeg-lib], [directory where ffmpeg libraries are]), with_ffmpeg_lib=${withval})
274 AC_CACHE_VAL(ac_cv_path_ffmpeg_lib, [
275 if test x"${with_ffmpeg_lib}" != x ; then
276 if test -f ${with_ffmpeg_lib}/libavcodec.a -o -f ${with_ffmpeg_lib}/libavcodec.${shlibext}; then
277 ac_cv_path_ffmpeg_lib="-L`(cd ${with_ffmpeg_lib}; pwd)`"
278 LIBS="${ac_cv_path_ffmpeg_lib} $LIBS"
279 else
280 AC_MSG_ERROR([${with_ffmpeg_lib} directory doesn't contain ffmpeg libraries.])
281 fi
282 fi
283 ])
284
285 dnl Try with pkg-config
286 if test x"${cross_compiling}" = xno; then
287 if test x"$PKG_CONFIG" != x -a x"${ac_cv_path_ffmpeg_lib}" = x; then
288 $PKG_CONFIG --exists libavcodec && libavcodec=`$PKG_CONFIG --libs-only-l libavcodec`
289 fi
290 fi
291
292 if test x"${libavcodec}" != x; then
293 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} ${libavcodec}"
294 else
295 AC_MSG_CHECKING([for libavcodec library])
296 topdir=""
297 for i in $libslist; do
298 if test -f $i/libavcodec.a -o -f $i/libavcodec.${shlibext}; then
299 topdir=$i
300 AC_MSG_RESULT(${topdir}/libavcodec)
301 if test ! x"$i" = x"/usr/lib" -a ! x"$i" = x"/usr/lib64"; then
302 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -L$i -lavcodec"
303 break
304 else
305 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -lavcodec"
306 break
307 fi
308 fi
309 done
310
311 if test x"${ac_cv_path_ffmpeg_lib}" = x; then
312 AC_MSG_RESULT(no)
313 if test x${cross_compiling} = xno; then
314 dnl avcodec_decode_audio2 starts 51.29.0
315 AC_CHECK_LIB(avcodec, ff_eval, [ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -lavcodec"])
316 fi
317 fi
318 fi
319
320 if test x"$PKG_CONFIG" != x -a x"${ac_cv_path_ffmpeg_lib}" != x; then
321 $PKG_CONFIG --exists libavcodec && topdir=`$PKG_CONFIG --libs-only-L libavcodec | sed -e 's/-L//' | cut -d ' ' -f 1`
322 fi
323
324 dnl Look for the DTS library, which is required on some systems.
325 if test x"${ac_cv_path_ffmpeg_lib}" != x; then
326 AC_MSG_CHECKING([for libdts library])
327 if test x"$PKG_CONFIG" != x -a x${cross_compiling} = xno; then
328 $PKG_CONFIG --exists libdts && libdts=`$PKG_CONFIG --libs-only-l libdts`
329 else
330 libdts=""
331 fi
332 if test x"${libdts}" = x; then
333 if test -f ${topdir}/libdts.a -o -f ${topdir}/libdts.${shlibext}; then
334 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -ldts"
335 AC_MSG_RESULT(${topdir}/libdts)
336 else
337 AC_MSG_RESULT(no)
338 if test x${cross_compiling} = xno; then
339 AC_CHECK_LIB(dts, dts_init, [ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -ldts"])
340 fi
341 fi
342 else
343 AC_MSG_RESULT(${libdts})
344 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} ${libdts}"
345 fi
346
347 dnl Look for the VORBISENC library, which is required on some systems.
348 AC_MSG_CHECKING([for libvorbisenc library])
349 if test x"$PKG_CONFIG" != x -a x${cross_compiling} = xno; then
350 $PKG_CONFIG --exists vorbisenc && libvorbisenc=`$PKG_CONFIG --libs-only-l vorbisenc`
351 else
352 libvorbisenc=""
353 fi
354 if test x"${libvorbisenc}" = x; then
355 if test -f ${topdir}/libvorbisenc.a -o -f ${topdir}/libvorbisenc.${shlibext}; then
356 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -lvorbisenc"
357 AC_MSG_RESULT(${topdir}/libvorbisenc)
358 else
359 AC_MSG_RESULT(no)
360 if test x${cross_compiling} = xno; then
361 AC_CHECK_LIB(vorbisenc, vorbis_encode_init, [ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -lvorbisenc"])
362 fi
363 fi
364 else
365 AC_MSG_RESULT(${libvorbisenc})
366 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} ${libvorbisenc}"
367 fi
368
369 dnl Look for the AVFORMAT library, which is required on some systems.
370 AC_MSG_CHECKING([for libavformat library])
371 if test x"$PKG_CONFIG" != x -a x${cross_compiling} = xno; then
372 $PKG_CONFIG --exists libavformat && libavformat=`$PKG_CONFIG --libs-only-l libavformat`
373 else
374 libavformat=""
375 fi
376 if test x"${libavformat}" = x; then
377 if test -f ${topdir}/libavformat.a -o -f ${topdir}/libavformat.${shlibext}; then
378 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -lavformat"
379 AC_MSG_RESULT(${topdir}/libavformat)
380 else
381 AC_MSG_RESULT(no)
382 if test x${cross_compiling} = xno; then
383 AC_CHECK_LIB(libavformat, av_open_input_file, [ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -lavformat"])
384 fi
385 fi
386 else
387 AC_MSG_RESULT(${libavformat})
388 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} ${libavformat}"
389 fi
390
391 dnl Look for the AVUTIL library, which is required on some systems.
392 AC_MSG_CHECKING([for libavutil library])
393 if test x"$PKG_CONFIG" != x -a x${cross_compiling} = xno; then
394 $PKG_CONFIG --exists libavutil && libavutil=`$PKG_CONFIG --libs-only-l libavutil`
395 else
396 libavutil=""
397 fi
398 if test x"${libavutil}" = x; then
399 if test -f ${topdir}/libavutil.a -o -f ${topdir}/libavutil.${shlibext}; then
400 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -lavutil"
401 AC_MSG_RESULT(${topdir}/libavutil)
402 else
403 AC_MSG_RESULT(no)
404 if test x${cross_compiling} = xno; then
405 AC_CHECK_LIB(avutil, av_log, [ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -lavutil"])
406 fi
407 fi
408 else
409 AC_MSG_RESULT(${libavutil})
410 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} ${libavutil}"
411 fi
412
413 dnl Look for the THEORA library, which is required on some systems.
414 AC_MSG_CHECKING([for libtheora library])
415 if test x"$PKG_CONFIG" != x -a x${cross_compiling} = xno; then
416 $PKG_CONFIG --exists theora && libtheora=`$PKG_CONFIG --libs-only-l theora`
417 else
418 libtheora=""
419 fi
420 if test x"${libtheora}" = x; then
421 if test -f ${topdir}/libtheora.a -o -f ${topdir}/libtheora.${shlibext}; then
422 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -ltheora"
423 AC_MSG_RESULT(${topdir}/libtheora)
424 else
425 AC_MSG_RESULT(no)
426 if test x${cross_compiling} = xno; then
427 AC_CHECK_LIB(theora, theora_encode_init, [ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -ltheora"])
428 fi
429 fi
430 else
431 AC_MSG_RESULT(${libtheora})
432 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} ${libtheora}"
433 fi
434
435 dnl Look for the GSM library, which is required on some systems.
436 AC_MSG_CHECKING([for libgsm library])
437 if test x"$PKG_CONFIG" != x -a x${cross_compiling} = xno; then
438 $PKG_CONFIG --exists gsm && libgsm=`$PKG_CONFIG --libs-only-l gsm`
439 else
440 libgsm=""
441 fi
442
443 dnl OpenBSD seems to have a problem with libgsm.
444 if test x$openbsd_os != xopenbsd; then
445 if test x"${libgsm}" = x; then
446 if test -f ${topdir}/libgsm.a -o -f ${topdir}/libgsm.${shlibext}; then
447 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -lgsm"
448 AC_MSG_RESULT(${topdir}/libgsm)
449 else
450 AC_MSG_RESULT(no)
451 if test x${cross_compiling} = xno; then
452 AC_CHECK_LIB(gsm, gsm_destroy, [ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -lgsm"])
453 fi
454 fi
455 fi
456 else
457 AC_MSG_RESULT(${libgsm})
458 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} ${libgsm}"
459 fi
460
461 dnl Look for the DC1394 library, which is required on some systems.
462 AC_MSG_CHECKING([for libdc1394 library])
463 if test x"$PKG_CONFIG" != x -a x${cross_compiling} = xno; then
464 $PKG_CONFIG --exists libdc && libdc=`$PKG_CONFIG --libs-only-l libdc1394`
465 else
466 libtdc=""
467 fi
468 if test x"${libdc}" = x; then
469 if test -f ${topdir}/libdc1394.a -o -f ${topdir}/libdc1394.${shlibext}; then
470 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -ldc1394"
471 AC_MSG_RESULT(${topdir}/libdc1394)
472 else
473 AC_MSG_RESULT(no)
474 if test x${cross_compiling} = xno; then
475 AC_CHECK_LIB(dc1394_control, dc1394_is_camera, [ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -ldc1394_control"])
476 fi
477 fi
478 else
479 AC_MSG_RESULT(${libdc})
480 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} ${libdc}"
481 fi
482
483 dnl Look for the swscale library, which is required on some system if ffmpeg is
484 dnl configured with --enable-gpl --enable-swscale.
485 AC_MSG_CHECKING([for libswscale library])
486 if test x"$PKG_CONFIG" != x -a x${cross_compiling} = xno; then
487 $PKG_CONFIG --exists libswscale && libsws=`$PKG_CONFIG --libs-only-l libswscale`
488 else
489 libsws=""
490 fi
491 if test x"${libsws}" = x; then
492 if test -f ${topdir}/libswscale.a -o -f ${topdir}/libswscale.${shlibext}; then
493 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -lswscale"
494 AC_MSG_RESULT(yes)
495 else
496 AC_MSG_RESULT(no)
497 if test x${cross_compiling} = xno; then
498 AC_CHECK_LIB(swscale, sws_scale, [ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} -lswscale"])
499 fi
500 fi
501 else
502 AC_MSG_RESULT(${libsws})
503 ac_cv_path_ffmpeg_lib="${ac_cv_path_ffmpeg_lib} ${libsws}"
504 fi
505
506 fi dnl end of all optional library tests
507
508 # Set final compilation flags, eliminating the pointless "-I/usr/include"
509 if test x"${ac_cv_path_ffmpeg_lib}" != x ; then
510 FFMPEG_LIBS="${ac_cv_path_ffmpeg_lib}"
511 else
512 FFMPEG_LIBS=""
513 fi
514
515 AC_SUBST(FFMPEG_CFLAGS)
516 AC_SUBST(FFMPEG_LIBS)
517
518 LIBS="$backupLIBS"
519 CFLAGS="$backupCFLAGS"
520 ])
521
522 # Local Variables:
523 # c-basic-offset: 2
524 # tab-width: 2
525 # indent-tabs-mode: nil
526 # End:

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