Bug#771556: x265: FTBFS on powerpc

[Sebastian Ramacher]

On 2014-11-30 18:34:42, Sebastian Ramacher wrote:
> Source: x265
> Version: 1.4-1
> Severity: important
> 
> Let's record this so I don't forget: x265 failed to build on powerpc:
> | /usr/bin/c++   -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2    -Wl,-z,relro -Wl,--as-needed CMakeFiles/cli.dir/input/y4m.cpp.o CMakeFiles/cli.dir/input/yuv.cpp.o CMakeFiles/cli.dir/input/input.cpp.o CMakeFiles/cli.dir/output/y4m.cpp.o CMakeFiles/cli.dir/output/yuv.cpp.o CMakeFiles/cli.dir/output/output.cpp.o CMakeFiles/cli.dir/filters/filters.cpp.o CMakeFiles/cli.dir/x265.cpp.o  -o x265 -rdynamic libx265.so.35 -lpthread -lrt -Wl,-rpath,/«PKGBUILDDIR»/obj-powerpc-linux-gnu: 
> | libx265.so.35: undefined reference to `__sync_val_compare_and_swap_8'
> | libx265.so.35: undefined reference to `__sync_or_and_fetch_8'
> | collect2: error: ld returned 1 exit status
> 
> https://buildd.debian.org/status/fetch.php?pkg=x265&arch=powerpc&ver=1.4-2&stamp=1417367767
> 
> powerpc porters, do you have any idea what the problem is? Are
> __sync_val_compare_and_swap and __sync_or_and_fetch not supported on
> powerpc?

The builds for mips and mipsel have failed with the same issue. I'm also
CCing the mips porters in the hope that they can shed some light on the
problem.

Cheers
-- 
Sebastian Ramacher
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