[Slackbuilds-users] dolphin-emu and latest x264

[Gerardo Zamudio]

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I upgraded x264 to the latest SlackBuilds version, x264-20150223. I
tried to run Dolphin and it complained about libx264.so.138 not being
found. I thought it may have been picked up during build time so I
decided to rebuild dolphin-emu and I got the following error:

/usr/lib64/gcc/x86_64-slackware-linux/4.8.2/../../../../x86_64-slackware
- -linux/bin/ld:
warning: libx264.so.138, needed by
/usr/lib64/gcc/x86_64-slackware-linux/4.8.2/../../../../lib64/libavcodec
.so,
not found (try using -rpath or -rpath-link)
/usr/lib64/gcc/x86_64-slackware-linux/4.8.2/../../../../lib64/libavcodec
.so:
undefined reference to `x264_encoder_close'
...
/usr/lib64/gcc/x86_64-slackware-linux/4.8.2/../../../../lib64/libavcodec
.so:
undefined reference to `x264_encoder_delayed_frames'
collect2: error: ld returned 1 exit status
make[2]: *** [Binaries/dolphin-emu] Error 1
make[2]: Leaving directory `/tmp/SBo/dolphin-4.0.2/build'
make[1]: *** [Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/all]
Error 2
make[1]: Leaving directory `/tmp/SBo/dolphin-4.0.2/build'
make: *** [all] Error 2

No problem, just go into /usr/lib64 and make a libx264.so.138 symlink:

root at hades:/usr/lib64 # ls -l libx264*
lrwxrwxrwx 1 root root      14 Jul 22 23:02 libx264.so -> libx264.so.146
*
lrwxrwxrwx 1 root root      10 Jul 22 23:02 libx264.so.138 -> libx264.so
*
- -rwxr-xr-x 1 root root 1008448 Jul  6 00:59 libx264.so.146*

Tried again and this time got the following error:

cd /tmp/SBo/dolphin-4.0.2/build/Source/Core/DolphinWX &&
/usr/bin/cmake -E cmake_link_script
CMakeFiles/dolphin-emu.dir/link.txt --verbose=1
...
/Common/libcommon.a -lpthread -lasound -lao -lopenal -lSoundTouch
/usr/lib64/gcc/x86_64-slackware-linux/4.8.2/../../../../lib64/libavcodec
.so:
undefined reference to `x264_encoder_open_138'
collect2: error: ld returned 1 exit status
make[2]: *** [Binaries/dolphin-emu] Error 1
make[2]: Leaving directory `/tmp/SBo/dolphin-4.0.2/build'
make[1]: *** [Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/all]
Error 2
make[1]: Leaving directory `/tmp/SBo/dolphin-4.0.2/build'
make: *** [all] Error 2

I ended up reverting to x264-20131101 which has the real
libx264.so.138 file instead of a symlink. From the error above Dolphin
seems to expect 138 for some reason.

- -- 
Gerardo Zamudio
Linux System Administrator
https://gerardozamudio.mx

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