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| author | Nick Foster | 2012-04-18 09:59:41 -0700 |
|---|---|---|
| committer | Josh Blum | 2012-04-19 18:13:23 -0700 |
| commit | fd1e12bffd162852ea377017204860af6573a01a (patch) | |
| tree | f8d425c42486de4ef60fcda9901e0c93aa99d8f1 /volk | |
| parent | 3d913cde5286c77ae4805bf7511b59190f2266dd (diff) | |
| download | gnuradio-fd1e12bffd162852ea377017204860af6573a01a.tar.gz gnuradio-fd1e12bffd162852ea377017204860af6573a01a.tar.bz2 gnuradio-fd1e12bffd162852ea377017204860af6573a01a.zip | |
volk: disable AVX if GCC version < 4.6.0
Diffstat (limited to 'volk')
| -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 ######################################################################## |