diff options
Diffstat (limited to 'volk/lib')
| -rw-r--r-- | volk/lib/CMakeLists.txt | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/volk/lib/CMakeLists.txt b/volk/lib/CMakeLists.txt index 5b7e0d256..108470d27 100644 --- a/volk/lib/CMakeLists.txt +++ b/volk/lib/CMakeLists.txt @@ -84,6 +84,19 @@ foreach(line ${arch_flag_lines}) endforeach(line) ######################################################################## +# eliminate AVX on GCC < 4.6.0 +# even though it accepts -mavx, as won't assemble xgetbv, which we need +######################################################################## +if(COMPILER_NAME MATCHES "GNU") + execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion + OUTPUT_VARIABLE GCC_VERSION) + if(GCC_VERSION VERSION_LESS "4.6") + message(STATUS "GCC too old for AVX support, overruling AVX") + list(REMOVE_ITEM available_archs avx) + endif() +endif() + +######################################################################## # implement overruling in the ORC case, # since ORC always passes flag detection ######################################################################## |