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disable lto partitioning when possible (fixes GCC < 4.8 issues, e.g. Debian stock compiler)

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This commit is contained in:
Dennis Luxen 2014-04-02 10:49:32 +02:00
parent d21f63d327
commit 165c252fc8
1 changed files with 9 additions and 4 deletions
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13
CMakeLists.txt
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@ -109,14 +109,19 @@ 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")
else (HAS_LTO_FLAG)
set(LTO_FLAGS "${LTO_FLAGS} -flto")
endif (HAS_LTO_FLAG) endif (HAS_LTO_FLAG)
# disable partitioning of LTO process when possible (fixes Debian issues)
set(LTO_PARTITION_FLAGS "")
CHECK_CXX_COMPILER_FLAG("-flto-partition=none" HAS_LTO_PARTITION_FLAG)
if (HAS_LTO_PARTITION_FLAG)
set(LTO_PARTITION_FLAGS "${LTO_PARTITION_FLAGS} -flto-partition=none")
endif (HAS_LTO_PARTITION_FLAG)
# Add Link-Time-Optimization flags, if supported (GCC >= 4.5) and enabled # Add Link-Time-Optimization flags, if supported (GCC >= 4.5) and enabled
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LTO_FLAGS}") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LTO_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${LTO_FLAGS}") set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${LTO_FLAGS} ${LTO_PARTITION_FLAGS}")
set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${LTO_FLAGS}") set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${LTO_FLAGS} ${LTO_PARTITION_FLAGS}")
# Configuring other platform dependencies # Configuring other platform dependencies
if(APPLE) if(APPLE)