diff options
Diffstat (limited to 'configure.cmake')
| -rw-r--r-- | configure.cmake | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/configure.cmake b/configure.cmake index a78b83bd33c..c97240237e9 100644 --- a/configure.cmake +++ b/configure.cmake @@ -866,7 +866,25 @@ int main() long long int *ptr= &var; return (int)__atomic_load_n(ptr, __ATOMIC_SEQ_CST); }" -HAVE_GCC_C11_ATOMICS) +HAVE_GCC_C11_ATOMICS_WITHOUT_LIBATOMIC) +IF (HAVE_GCC_C11_ATOMICS_WITHOUT_LIBATOMIC) + SET(HAVE_GCC_C11_ATOMICS True) +ELSE() + SET(OLD_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES}) + LIST(APPEND CMAKE_REQUIRED_LIBRARIES "atomic") + CHECK_CXX_SOURCE_COMPILES(" + int main() + { + long long int var= 1; + long long int *ptr= &var; + return (int)__atomic_load_n(ptr, __ATOMIC_SEQ_CST); + }" + HAVE_GCC_C11_ATOMICS_WITH_LIBATOMIC) + IF(HAVE_GCC_C11_ATOMICS_WITH_LIBATOMIC) + SET(HAVE_GCC_C11_ATOMICS True) + ENDIF() + SET(CMAKE_REQUIRED_LIBRARIES ${OLD_CMAKE_REQUIRED_LIBRARIES}) +ENDIF() IF(WITH_VALGRIND) SET(HAVE_valgrind 1) |