Automake 1.14/2.0 support

VLC (master and 2.1 branch) fails to build on Ubuntu. The last known working commit was afac3fec. The commit d3bd87aa is probably the cause of the build failure.

make[4]: Leaving directory `/build/buildd/vlc-2.1.0+git20130909+r78/modules/audio_mixer'
Making distclean in audio_output
make[4]: Entering directory `/build/buildd/vlc-2.1.0+git20130909+r78/modules/audio_output'
Makefile:1465: .deps/libadummy_plugin_la-adummy.Plo: No such file or directory
Makefile:1466: .deps/libafile_plugin_la-file.Plo: No such file or directory
Makefile:1467: .deps/libalsa_plugin_la-alsa.Plo: No such file or directory
Makefile:1468: .deps/libamem_plugin_la-amem.Plo: No such file or directory
Makefile:1469: .deps/libandroid_audiotrack_plugin_la-audiotrack.Plo: No such file or directory
Makefile:1470: .deps/libaudioqueue_plugin_la-audioqueue.Plo: No such file or directory
Makefile:1471: .deps/libaudiounit_ios_plugin_la-TPCircularBuffer.Plo: No such file or directory
Makefile:1472: .deps/libaudiounit_ios_plugin_la-audiounit_ios.Plo: No such file or directory
Makefile:1473: .deps/libauhal_plugin_la-TPCircularBuffer.Plo: No such file or directory
Makefile:1474: .deps/libauhal_plugin_la-auhal.Plo: No such file or directory
Makefile:1475: .deps/libdirectsound_plugin_la-directx.Plo: No such file or directory
Makefile:1476: .deps/libjack_plugin_la-jack.Plo: No such file or directory
Makefile:1477: .deps/libkai_plugin_la-kai.Plo: No such file or directory
Makefile:1478: .deps/libmmdevice_plugin_la-mmdevice.Plo: No such file or directory
Makefile:1479: .deps/libmmdevice_plugin_la-wasapi.Plo: No such file or directory
Makefile:1480: .deps/libopensles_android_plugin_la-opensles_android.Plo: No such file or directory
Makefile:1481: .deps/liboss_plugin_la-oss.Plo: No such file or directory
Makefile:1482: .deps/libpulse_plugin_la-pulse.Plo: No such file or directory
Makefile:1483: .deps/libpulse_plugin_la-vlcpulse.Plo: No such file or directory
Makefile:1484: .deps/libsndio_plugin_la-sndio.Plo: No such file or directory
Makefile:1485: .deps/libwaveout_plugin_la-waveout.Plo: No such file or directory
make[4]: *** No rule to make target `.deps/libwaveout_plugin_la-waveout.Plo'.  Stop.
make[4]: Leaving directory `/build/buildd/vlc-2.1.0+git20130909+r78/modules/audio_output'
make[3]: *** [distclean-recursive] Error 1
make[3]: Leaving directory `/build/buildd/vlc-2.1.0+git20130909+r78/modules'
make[2]: *** [distclean-recursive] Error 1

Full logs: https://launchpadlibrarian.net/149851876/buildlog_ubuntu-quantal-amd64.vlc_2.2.0~~git20130910%2Br2985-0r104ubuntu12.10.1_FAILEDTOBUILD.txt.gz https://launchpadlibrarian.net/149778684/buildlog_ubuntu-saucy-amd64.vlc_2.1.0%2Bgit20130909%2Br78-0r107ubuntu13.10.1_FAILEDTOBUILD.txt.gz

assigned to @Courmisch

added Component::Build system label

commit d259081a Author: Rémi Denis-Courmont remi@remlab.net Date: Fri Sep 13 22:49:42 2013 +0300

PulseAudio: compile helper only once (refs [#9367](https://code.videolan.org/videolan/vlc/-/issues/9367))

Original author: remi@remlab.net

commit 3f77b01a Author: Rémi Denis-Courmont remi@remlab.net Date: Fri Sep 13 22:36:42 2013 +0300

XCB: compile events.c only once (refs [#9367](https://code.videolan.org/videolan/vlc/-/issues/9367))

Original author: remi@remlab.net

commit 739bb77b Author: Rémi Denis-Courmont remi@remlab.net Date: Sat Sep 14 22:47:37 2013 +0300

dts: compile header helpers only once (refs [#9367](https://code.videolan.org/videolan/vlc/-/issues/9367))

Original author: remi@remlab.net

changed title from VLC build failure: Makefile:[...]: [...].Plo: No such file or directory to Automake 1.14/2.0 support

automake does not support compiling any file from the same directory from different Makefiles. For instance, it breaks if "modules/foo/file1.c" is compiled by "modules/foo/Makefile" and "modules/foo/file2.c" is compiled by "modules/bar/Makefile". This is because file1.lo and file2.lo are output in the same directory @top_builddir@/modules/foo, and the corresponding .deps directory will be deleted by both Makefiles.

So far the problem was hidden because the subdir-objects option was only enabled in src/. But newer automake versions require the option everywhere. This causes a number of failures in modules/ some easier to fix than others. It also breaks lib/ usage of revision.c. This will take quite a while to completely fix.

Anyway, this only breaks the distclean and distcheck targets. I do not see any reason why Debian would need to run either of them.

added Severity::blocker label

changed milestone to %2.2.x maintenance branch

distclean is needed when building a Debian package twice in a row. distclean is run in the Debian clean target if the Makefiles are present (i.e. the package was build before).

commit 527714d4 Author: Rémi Denis-Courmont remi@remlab.net Date: Mon Sep 16 00:01:20 2013 +0300

lib: work around automake subdirectory limitation (fixes [#9367](https://code.videolan.org/videolan/vlc/-/issues/9367))

Original author: remi@remlab.net

added Status::fixed label

closed

commit bca1bc25 Author: Rémi Denis-Courmont remi@remlab.net Date: Sun Sep 15 23:55:55 2013 +0300

motionlib: build only once (refs [#9367](https://code.videolan.org/videolan/vlc/-/issues/9367))

Original author: remi@remlab.net

commit f2db3173 Author: Rémi Denis-Courmont remi@remlab.net Date: Sun Sep 15 23:55:34 2013 +0300

meta_engine: remove makefile recursion (refs [#9367](https://code.videolan.org/videolan/vlc/-/issues/9367))

Original author: remi@remlab.net