[Mesa-dev] [Bug 93089] mesa fails to check for gcc atomic primitives before using them

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93089

--- Comment #21 from freedesktop at eckner.net ---
This also popped up on archlinux32 when trying to package mesa for i486:

/usr/bin/ld: src/intel/vulkan/libanv_common.a(anv_allocator.c.o): in function
`anv_block_pool_alloc_new':
anv_allocator.c:(.text+0x1aa): undefined reference to `__sync_fetch_and_add_8'
/usr/bin/ld: anv_allocator.c:(.text+0x307): undefined reference to
`__sync_lock_test_and_set_8'
/usr/bin/ld: src/intel/vulkan/libanv_common.a(anv_allocator.c.o): in function
`anv_free_list_pop':
anv_allocator.c:(.text+0x440): undefined reference to
`__sync_val_compare_and_swap_8'
/usr/bin/ld: src/intel/vulkan/libanv_common.a(anv_allocator.c.o): in function
`anv_free_list_push':
anv_allocator.c:(.text+0x526): undefined reference to
`__sync_val_compare_and_swap_8'
/usr/bin/ld: src/intel/vulkan/libanv_common.a(anv_allocator.c.o): in function
`anv_state_pool_alloc_no_vg':
anv_allocator.c:(.text+0x755): undefined reference to `__sync_fetch_and_add_8'
/usr/bin/ld: anv_allocator.c:(.text+0x7a3): undefined reference to
`__sync_lock_test_and_set_8'


I seem unable to find a source file (only the mentioned *.a and *.o) which
actually tries to use these atomics - any idea, where I should look / try to
patch?

> gcc --version
gcc (GCC) 8.2.1 20180831
> uname -a
Linux arch32-i486-bs0 4.17.6-1-ARCH #1 SMP PREEMPT Wed Jul 18 08:34:04 UTC 2018
i486 GNU/Linux

Best Regards,
Erich

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