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Disabled -ffast-math in the case of GCC 4.6.x (ticket #1201)

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Vadim Pisarevsky 2011-07-07 22:35:34 +00:00
parent c3ef6e866f
commit af00cd5b75
1 changed files with 6 additions and 1 deletions
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7
CMakeLists.txt
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@ -361,7 +361,12 @@ if(CMAKE_COMPILER_IS_GNUCXX)
if(X86 OR X86_64)
# enable everything, since the available set of instructions is checked at runtime
set(USE_FAST_MATH ON CACHE BOOL "Enable -ffast-math")
IF ("${CMAKE_GCC_REGEX_VERSION}" VERSION_GREATER 4.6.-1)
SET(_USE_FAST_MATH OFF)
ELSE()
SET(_USE_FAST_MATH ON)
ENDIF()
set(USE_FAST_MATH ${_USE_FAST_MATH} CACHE BOOL "Enable -ffast-math (not recommended for GCC 4.6.x)")
set(ENABLE_SSE ON CACHE BOOL "Enable SSE instructions")
set(ENABLE_SSE2 ON CACHE BOOL "Enable SSE2 instructions")
set(ENABLE_SSE3 OFF CACHE BOOL "Enable SSE3 instructions")