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Merge pull request #765 from worktycho/fastmath

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Enabled -ffast-math
This commit is contained in:
Mattes D 2014-03-07 18:32:04 +01:00
commit 51c1849762
1 changed files with 9 additions and 2 deletions
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11
SetFlags.cmake
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@ -1,5 +1,3 @@
macro (add_flags_lnk FLAGS) macro (add_flags_lnk FLAGS)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${FLAGS}") set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} ${FLAGS}") set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} ${FLAGS}")
@ -62,6 +60,7 @@ macro(set_flags)
# We use a signed char (fixes #640 on RasPi) # We use a signed char (fixes #640 on RasPi)
add_flags_cxx("-fsigned-char") add_flags_cxx("-fsigned-char")
endif() endif()
@ -184,6 +183,14 @@ macro(set_exe_flags)
string(REPLACE "-w" "" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}") string(REPLACE "-w" "" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
string(REPLACE "-w" "" CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}") string(REPLACE "-w" "" CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}")
add_flags_cxx("-Wall -Wextra") add_flags_cxx("-Wall -Wextra")
# we support non-IEEE 754 fpus so can make no guarentees about error
add_flags_cxx("-ffast-math")
# clang does not provide the __extern_always_inline macro and a part of libm depends on this when using fast-math
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
add_flags_cxx("-D__extern_always_inline=inline")
endif()
endif() endif()
endmacro() endmacro()