diff options
Diffstat (limited to 'CMakeLists.txt')
| -rw-r--r-- | CMakeLists.txt | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 2deefa15f..0acfefb75 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -1120,6 +1120,23 @@ ELSE() MESSAGE(STATUS "atomic builtins are supported") ENDIF() +CHECK_C_SOURCE_RUNS(" +#include <x86intrin.h> +int main(int argc, char **argv) { + unsigned l; + if (__builtin_ia32_rdtscp(&l)) { + return 0; + } + return -1; +} +" HAVE_RDTSCP) + +IF(NOT HAVE_RDTSCP) + MESSAGE(STATUS "rdtscp intrinsic is -NOT- supported") +ELSE() + MESSAGE(STATUS "rdtscp intrinsic is supported") +ENDIF() + IF(CMAKE_SYSTEM_NAME STREQUAL "Linux") # In linux, we need to mount /run/shm to test which could be unavailable # on a build system. On the other hand, we know that linux has stupid |