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CMake: do not check/set SSE and float-store options on non-x86 targets.

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Not sure if that's right. I guess we might also find non-x86 machines
where floating point computation won't follow IEEE standard as well. But
let's do this for now to prevent from useless performance hit.
This commit is contained in:
Jehan 2017-11-07 00:37:54 +01:00
parent 939482ab2b
commit cd617d181d
1 changed files with 12 additions and 9 deletions
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21
CMakeLists.txt
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@ -44,15 +44,18 @@ if (BUILD_SHARED_LIBS)
option(BUILD_STATIC "Build static library" ON)
endif (BUILD_SHARED_LIBS)
CHECK_C_COMPILER_FLAG(-msse2 SUPPORTS_CFLAG_SSE2)
CHECK_C_COMPILER_FLAG(-mfpmath=sse SUPPORTS_CFLAG_SSE_MATH)
if (CHECK_SSE2 AND SUPPORTS_CFLAG_SSE2 AND SUPPORTS_CFLAG_SSE_MATH)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msse2 -mfpmath=sse")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse2 -mfpmath=sse")
else (CHECK_SSE2 AND SUPPORTS_CFLAG_SSE2 AND SUPPORTS_CFLAG_SSE_MATH)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ffloat-store")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ffloat-store")
endif (CHECK_SSE2 AND SUPPORTS_CFLAG_SSE2 AND SUPPORTS_CFLAG_SSE_MATH)
string(TOLOWER ${CMAKE_SYSTEM_PROCESSOR} TARGET_ARCHITECTURE)
if (TARGET_ARCHITECTURE MATCHES ".*(x86)|(amd).*")
CHECK_C_COMPILER_FLAG(-msse2 SUPPORTS_CFLAG_SSE2)
CHECK_C_COMPILER_FLAG(-mfpmath=sse SUPPORTS_CFLAG_SSE_MATH)
if (CHECK_SSE2 AND SUPPORTS_CFLAG_SSE2 AND SUPPORTS_CFLAG_SSE_MATH)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msse2 -mfpmath=sse")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse2 -mfpmath=sse")
else (CHECK_SSE2 AND SUPPORTS_CFLAG_SSE2 AND SUPPORTS_CFLAG_SSE_MATH)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ffloat-store")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ffloat-store")
endif (CHECK_SSE2 AND SUPPORTS_CFLAG_SSE2 AND SUPPORTS_CFLAG_SSE_MATH)
endif (TARGET_ARCHITECTURE MATCHES ".*(x86)|(amd).*")
configure_file(
uchardet.pc.in