Ubuntu 15.10 Unsupported Compiler

[Taddeusz]

Have an interesting issue. I upgraded my Ubuntu test server last week to 15.10. Apparently gcc has been upgraded to 5.2.1 which is unsupported by mplayer. According to the message I get only 2.95 and 3.x or 4.x are supported:

Checking for cc version ... 5.2.1, bad

*** Please downgrade/upgrade C compiler to version gcc-2.95, 3.x or 4.x! ***

You are not using a supported compiler. We do not have the time to make sure
everything works with compilers other than the ones we use.  Use either the
same compiler as we do, or use --disable-gcc-check but DO *NOT* REPORT BUGS
unless you can reproduce them after recompiling with a 2.95.x or 3/4.x version!

Note for gcc 2.96 users: Some versions of this compiler are known to miscompile
mplayer and lame (which is used for mencoder).  If you get compile errors,
first upgrade to the latest 2.96 release (minimum 2.96-85) and try again.
If the problem still exists, try with gcc 3.x (or 2.95.x) *BEFORE* reporting
bugs!

        GCC 2.96 IS NOT AND WILL NOT BE SUPPORTED BY US !


Error: Bad gcc version

Check "configure.log" if you do not understand why it failed.
Build failed, exiting.
Build MPLAYER failed, exiting.
Build failed, exiting.

The --disable-gcc-check flag can be added but maybe we should check compatibility first?

[stuckless]

I think the mplayer instance is so old that it doesn't know about version 5 of the compiler. We should probably EITHER add the gcc check or upgrade the configure script in the mplayer folder to allow for version 5.

[stuckless]

I think this line
https://github.com/google/sagetv/blo...onfigure#L1386
probably just needs to have 3-5 instead of the 3-4 that it has now.

[Taddeusz]

Originally Posted by stuckless

I think this line
https://github.com/google/sagetv/blo...onfigure#L1386
probably just needs to have 3-5 instead of the 3-4 that it has now.

That didn't work. Probably in the warnings somewhere but this is the final error I get with that modification to the configuration script made:

cc -o mplayer mplayer.o m_property.o mp_fifo.o mp_msg.o mixer.o parser-mpcmd.o subopt-helper.o command.o asxparser.o codec-cfg.o cpudetect.o edl.o find_sub.o m_config.o m_option.o m_struct.o mpcommon.o parser-cfg.o playtree.o playtreeparser.o spudec.o sub_cc.o subreader.o vobsub.o unrarlib.o libvo/libvo.a libao2/libao2.a input/libinput.a vidix/libvidix.a libdha/libdha.a libmpcodecs/libmpcodecs.a libaf/libaf.a libmpdemux/libmpdemux.a stream/stream.a libswscale/libswscale.a libvo/libosd.a libavformat/libavformat.a libavcodec/libavcodec.a libavutil/libavutil.a libpostproc/libpostproc.a loader/libloader.a mp3lib/libmp3.a libmpeg2/libmpeg2.a libfaad2/libfaad2.a tremor/libvorbisidec.a osdep/libosdep.a  -Wl,-z,noexecstack    -lpng -lz -lz  -ldl -rdynamic  -lm -lpthread
libavcodec/libavcodec.a(snow.o): In function `encode_q_branch':
snow.c:(.text+0x95df): undefined reference to `ff_epzs_motion_search'
snow.c:(.text+0x966f): undefined reference to `ff_get_mb_score'
collect2: error: ld returned 1 exit status
Makefile:236: recipe for target 'mplayer' failed
make: *** [mplayer] Error 1

[Taddeusz]

Tried to compile just libavcodec I saw this warning about ff_epzs_motion_search as is referenced by the previous error:

mpegvideo.h:770:12: warning: inline function 'ff_epzs_motion_search' declared but never defined
 inline int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,

[stuckless]

I've been meaning to update to 15.10... Maybe I'll give it shot over the next few days and see how it goes. If you do figure this out, then let us know. thx.

[rjleurck]

Just to advise that updating 3.4 to 3.5 in configure in the regular expression to check compiler versions enabled mplayer to compile on ubuntu 15.10. Thanks for the tip

[Taddeusz]

Originally Posted by rjleurck

Just to advise that updating 3.4 to 3.5 in configure in the regular expression to check compiler versions enabled mplayer to compile on ubuntu 15.10. Thanks for the tip

What line is that in the configure file?