Odp atomic operations based on compiler build-ins. Make sure that compiler supports such operation at configure stage.
Signed-off-by: Maxim Uvarov <[email protected]> --- configure.ac | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/configure.ac b/configure.ac index 8dbad4b..7bd2a47 100644 --- a/configure.ac +++ b/configure.ac @@ -40,6 +40,25 @@ AC_TYPE_INT32_T AC_TYPE_UINT32_T AC_TYPE_UINT64_T +AC_MSG_CHECKING(for GCC atomic builtins) +AC_LINK_IFELSE( + [AC_LANG_SOURCE( + [[#include <stdint.h> + int main() { + volatile uint32_t v = 1; + __atomic_fetch_add(&v, 1, __ATOMIC_RELAXED); + __atomic_fetch_sub(&v, 1, __ATOMIC_RELAXED); + __atomic_store_n(&v, 1, __ATOMIC_RELAXED); + __atomic_load_n(&v, __ATOMIC_RELAXED); + return 0; + } + ]])], + AC_MSG_RESULT(yes), + AC_MSG_RESULT(no) + echo "Atomic operation are not supported by your compiller." + echo "Use newer version. For gcc > 4.7.3" + exit -1) + ########################################################################## # Determine which platform to build for ########################################################################## -- 1.8.5.1.163.gd7aced9 _______________________________________________ lng-odp mailing list [email protected] http://lists.linaro.org/mailman/listinfo/lng-odp
