[Debian GNUstep maintainers] Bug#739316: FTBFS with libav10

[Moritz Muehlenhoff]

Package: lynkeos.app
Severity: important

Hi,
your package fails to build from source against libav 10 (currently
packaged in experimental). This bug will become release-critical
at some point when the libav10 transition starts.

Migration documentation can be found at
https://wiki.libav.org/Migration/10

Cheers,
        Moritz

LynkeosFfmpegMovie.m: In function '-[LynkeosFfmpegMovie loadImageDataIn:]':
LynkeosFfmpegMovie.m:96:3: warning: implicit declaration of function 'asprintf' [-Wimplicit-function-declaration]
   nbBytes = asprintf(&header, "P6\n%d %d\n255\n", width, height);
   ^
gcc  -rdynamic      -pthread -shared-libgcc -fexceptions -fgnu-runtime -o Lynkeos.app/./Lynkeos \
        ./obj/Lynkeos.obj/ffmpeg_access.c.o ./obj/Lynkeos.obj/stack.c.o ./obj/Lynkeos.obj/fourier.c.o ./obj/Lynkeos.obj/corelati+on.c.o ./obj/Lynkeos.obj/main.m.o ./obj/Lynkeos.obj/MyImageListEnumerator.m.o ./obj/Lynkeos.obj/MyCustomViews.m.o
+./obj/Lynkeos.obj/MyDocumentData.m.o ./obj/Lynkeos.obj/MyDocument.m.o ./obj/Lynkeos.obj/MyImageListItem.m.o
+./obj/Lynkeos.obj/MyImageList.m.o
./obj/Lynkeos.obj/MyImageListWindow.m.o ./obj/Lynkeos.obj/MyImageListWindowPrivate.m.o ./obj/Lynkeos.obj/MyImageView.m.o
+./obj/Lynkeos.obj/MyImageViewSelection.m.o ./obj/Lynkeos.obj/MyListProcessing.m.o ./obj/Lynkeos.obj/MyObjectImageList.m.o
+./obj/Lynkeos.obj/MyPostProcessing.m.o ./obj/Lynkeos.obj/MySizeLock.m.o ./obj/Lynkeos.obj/MyUserPrefsController.m.o
+./obj/Lynkeos.obj/LynkeosFfmpegMovie.m.o      -L/usr/local/lib -L/usr/lib     -lgnustep-gui    -lgnustep-base -lavformat
+-lavcodec -lswscale -lavutil -ltiff -lfftw3f_threads -lfftw3_threads -lfftw3f -lfftw3 -lm    -lobjc   -lm
./obj/Lynkeos.obj/ffmpeg_access.c.o: In function `GetNextFrame':
/home/jmm/av10/lynkeos.app-1.2/Sources/ffmpeg_access.c:132: undefined reference to `av_read_packet'
./obj/Lynkeos.obj/ffmpeg_access.c.o: In function `ffmpegLoadMovie':
/home/jmm/av10/lynkeos.app-1.2/Sources/ffmpeg_access.c:267: undefined reference to `av_close_input_file'
/home/jmm/av10/lynkeos.app-1.2/Sources/ffmpeg_access.c:297: undefined reference to `av_close_input_file'
/home/jmm/av10/lynkeos.app-1.2/Sources/ffmpeg_access.c:246: undefined reference to `av_close_input_file'
/home/jmm/av10/lynkeos.app-1.2/Sources/ffmpeg_access.c:281: undefined reference to `av_close_input_file'
./obj/Lynkeos.obj/ffmpeg_access.c.o: In function `ffmpegMovieBackToStart':
/home/jmm/av10/lynkeos.app-1.2/Sources/ffmpeg_access.c:201: undefined reference to `av_close_input_file'
collect2: error: ld returned 1 exit status
make[4]: *** [Lynkeos.app/./Lynkeos] Error 1
make[3]: *** [internal-app-run-compile-submake] Error 2
make[2]: *** [Lynkeos.all.app.variables] Error 2
make[1]: *** [internal-all] Error 2
make[1]: Leaving directory `/home/jmm/av10/lynkeos.app-1.2/Sources'
make: *** [build-stamp] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2