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configure: make the C11 atomics check more robust 

C11 atomics allow direct access. This check should prevent the usage
of bogus stdatomic.h available on some systems.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
Michael Niedermayer 2018-04-13 11:04:40 -03:00 committed by James Almer
parent e7a2f1f8d8
commit 876f9ac9a6
1 changed files with 1 additions and 1 deletions
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2
configure vendored
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@ -5825,7 +5825,7 @@ check_header asm/types.h
# it seems there are versions of clang in some distros that try to use the
# gcc headers, which explodes for stdatomic
# so we also check that atomics actually work here
check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
check_lib advapi32 "windows.h" RegCloseKey -ladvapi32
check_lib ole32 "windows.h" CoTaskMemFree -lole32