From: Andrew Galante <spock...@gmail.com> Some platforms have 64-bit __atomic_load_n but not 64-bit __atomic_add_fetch, so test for both of them.
Bug: https://bugs.gentoo.org/655616 Reviewed-by: Matt Turner <matts...@gmail.com> --- meson.build | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/meson.build b/meson.build index 62200476216..517636e5e09 100644 --- a/meson.build +++ b/meson.build @@ -841,7 +841,9 @@ if cc.compiles('''#include <stdint.h> struct { uint64_t *v; } x; - return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE); + return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE) & + (int)__atomic_add_fetch(x.v, (uint64_t)1, __ATOMIC_ACQ_REL); + }''', name : 'GCC atomic builtins') pre_args += '-DUSE_GCC_ATOMIC_BUILTINS' @@ -857,7 +859,8 @@ if cc.compiles('''#include <stdint.h> struct { uint64_t *v; } x; - return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE); + return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE) & + (int)__atomic_add_fetch(x.v, (uint64_t)1, __ATOMIC_ACQ_REL); }''', name : 'GCC atomic builtins required -latomic') dep_atomic = cc.find_library('atomic') -- 2.16.1 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
