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CMake: disable SSE flags if gcc/clang don't support

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This commit is contained in:
Campbell Barton 2014-03-27 08:28:59 +11:00
parent 20a4e33837
commit 10e7544586
1 changed files with 25 additions and 14 deletions
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39
intern/cycles/CMakeLists.txt
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@ -13,8 +13,11 @@ include(cmake/external_libs.cmake)
# Build Flags
# todo: refactor this code to match scons
# note: CXX_HAS_SSE is needed in case passing SSE flags fails altogether (gcc-arm)
if(WIN32 AND MSVC)
set(CXX_HAS_SSE TRUE)
# /arch:AVX for VC2012 and above
if(NOT MSVC_VERSION LESS 1700)
set(CYCLES_AVX_ARCH_FLAGS "/arch:AVX")
@ -40,25 +43,33 @@ if(WIN32 AND MSVC)
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} /Ox")
set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} /Ox")
elseif(CMAKE_COMPILER_IS_GNUCC)
set(CYCLES_SSE2_KERNEL_FLAGS "-ffast-math -msse -msse2 -mfpmath=sse")
set(CYCLES_SSE3_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3 -mssse3 -mfpmath=sse")
set(CYCLES_SSE41_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3 -mssse3 -msse4.1 -mfpmath=sse")
set(CYCLES_AVX_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3 -mssse3 -msse4.1 -mavx -mfpmath=sse")
check_cxx_compiler_flag(-msse CXX_HAS_SSE)
if(CXX_HAS_SSE)
set(CYCLES_SSE2_KERNEL_FLAGS "-ffast-math -msse -msse2 -mfpmath=sse")
set(CYCLES_SSE3_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3 -mssse3 -mfpmath=sse")
set(CYCLES_SSE41_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3 -mssse3 -msse4.1 -mfpmath=sse")
set(CYCLES_AVX_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3 -mssse3 -msse4.1 -mavx -mfpmath=sse")
endif()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ffast-math")
elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
set(CYCLES_SSE2_KERNEL_FLAGS "-ffast-math -msse -msse2")
set(CYCLES_SSE3_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3 -mssse3")
set(CYCLES_SSE41_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3 -mssse3 -msse4.1")
set(CYCLES_AVX_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3 -mssse3 -msse4.1 -mavx")
check_cxx_compiler_flag(-msse CXX_HAS_SSE)
if(CXX_HAS_SSE)
set(CYCLES_SSE2_KERNEL_FLAGS "-ffast-math -msse -msse2")
set(CYCLES_SSE3_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3 -mssse3")
set(CYCLES_SSE41_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3 -mssse3 -msse4.1")
set(CYCLES_AVX_KERNEL_FLAGS "-ffast-math -msse -msse2 -msse3 -mssse3 -msse4.1 -mavx")
endif()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ffast-math")
endif()
add_definitions(
-DWITH_KERNEL_SSE2
-DWITH_KERNEL_SSE3
-DWITH_KERNEL_SSE41
-DWITH_KERNEL_AVX
)
if(CXX_HAS_SSE)
add_definitions(
-DWITH_KERNEL_SSE2
-DWITH_KERNEL_SSE3
-DWITH_KERNEL_SSE41
-DWITH_KERNEL_AVX
)
endif()
# for OSL
if(WIN32 AND MSVC)