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Merge branch 'lto-fix' of https://github.com/TheMarex/Project-OSRM into TheMarex-lto-fix

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Dennis Luxen 2014-05-12 11:05:15 +02:00
commit 8eef8204e7
1 changed files with 9 additions and 1 deletions
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10
CMakeLists.txt
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@ -107,8 +107,16 @@ endif()
# Check if LTO is available # Check if LTO is available
set(LTO_FLAGS "") set(LTO_FLAGS "")
CHECK_CXX_COMPILER_FLAG("-flto" HAS_LTO_FLAG) CHECK_CXX_COMPILER_FLAG("-flto" HAS_LTO_FLAG)
if (HAS_LTO_FLAG) if (HAS_LTO_FLAG)
set(LTO_FLAGS "${LTO_FLAGS} -flto") set(LTO_FLAGS "${LTO_FLAGS} -flto")
# Since gcc 4.9 the LTO format is non-standart ('slim'), so we need to use the build-in tools
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" AND
NOT "${CMAKE_CXX_COMPILER_VERSION}" VERSION_LESS "4.9.0")
message(STATUS "Using gcc specific binutils for LTO.")
set(CMAKE_AR "/usr/bin/gcc-ar")
set(CMAKE_RANLIB "/usr/bin/gcc-ranlib")
endif()
endif (HAS_LTO_FLAG) endif (HAS_LTO_FLAG)
# disable partitioning of LTO process when possible (fixes Debian issues) # disable partitioning of LTO process when possible (fixes Debian issues)