configure: make the check for stdatomic.h stricter

Old ICC verions don't advertise having a full C11 implementation but
may nonetheless include a feature-incomplete stdatomic.h header.

Fixes ticket #6049

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2016-12-27 21:54:55 -03:00
parent ffc3337e0b
commit 6993bb4eb6

2
configure vendored
View File

@ -5623,7 +5623,7 @@ 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_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32