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CMake: rename s/ENABLE_SSE2/CHECK_SSE2/.

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"ENABLE_SSE2" may be misleading since having it ON does not necessarily
mean that SSE2 flags will be actually set. It only means that the
support will be checked (then set only when supported).
Also adding the warning about possible performance decrease.
This commit is contained in:
Jehan 2017-11-06 02:07:40 +01:00
parent 5996bbd995
commit 77bf71ea36
1 changed files with 4 additions and 4 deletions
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8
CMakeLists.txt
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@ -38,7 +38,7 @@ include(GNUInstallDirs)
option(BUILD_BINARY "Build executable" ON)
option(BUILD_SHARED_LIBS "Build shared library and link executable to it" ON)
option(ENABLE_SSE2 "Enable SSE2 extensions if the compiler supports it" ON)
option(CHECK_SSE2 "Check and enable SSE2 extensions if supported. Disabling SSE on platforms which support it may decrease performances." ON)
if (BUILD_SHARED_LIBS)
option(BUILD_STATIC "Build static library" ON)
@ -46,13 +46,13 @@ endif (BUILD_SHARED_LIBS)
CHECK_C_COMPILER_FLAG(-msse2 SUPPORTS_CFLAG_SSE2)
CHECK_C_COMPILER_FLAG(-mfpmath=sse SUPPORTS_CFLAG_SSE_MATH)
if (ENABLE_SSE2 AND SUPPORTS_CFLAG_SSE2 AND 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 (ENABLE_SSE2 AND SUPPORTS_CFLAG_SSE2 AND SUPPORTS_CFLAG_SSE_MATH)
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 (ENABLE_SSE2 AND SUPPORTS_CFLAG_SSE2 AND SUPPORTS_CFLAG_SSE_MATH)
endif (CHECK_SSE2 AND SUPPORTS_CFLAG_SSE2 AND SUPPORTS_CFLAG_SSE_MATH)
configure_file(
uchardet.pc.in