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Support gcc Link Time Optimization.

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This commit is contained in:
Felix Geyer 2012-04-18 20:18:48 +02:00
parent 0791b43da9
commit 4e5e5c71ca
1 changed files with 17 additions and 0 deletions
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17
CMakeLists.txt
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@ -21,6 +21,7 @@ set( CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake )
option(WITH_TESTS "Enable building of unit tests" ON) option(WITH_TESTS "Enable building of unit tests" ON)
option(WITH_GUI_TESTS "Enable building of GUI tests" OFF) option(WITH_GUI_TESTS "Enable building of GUI tests" OFF)
option(WITH_LTO "Enable Link Time Optimization (LTO)" OFF)
set( KEEPASSX_VERSION "0.9.0" ) set( KEEPASSX_VERSION "0.9.0" )
@ -56,6 +57,22 @@ if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANG)
endif( CMAKE_SYSTEM_NAME STREQUAL "Linux" ) endif( CMAKE_SYSTEM_NAME STREQUAL "Linux" )
endif(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANG) endif(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANG)
if(WITH_LTO)
include(CheckCXXCompilerFlag)
if(CMAKE_COMPILER_IS_GNUCXX)
check_cxx_compiler_flag("-flto -fuse-linker-plugin" LTO_AVAILABLE)
if(LTO_AVAILABLE)
add_compiler_flags("-flto -fuse-linker-plugin")
else()
message(FATAL_ERROR "This version of gcc doesn't support LTO")
endif(LTO_AVAILABLE)
else()
message(FATAL_ERROR "LTO is only supported with gcc")
endif(CMAKE_COMPILER_IS_GNUCXX)
endif(WITH_LTO)
if( APPLE OR MINGW ) if( APPLE OR MINGW )
set( PROGNAME KeePassX ) set( PROGNAME KeePassX )
else( APPLE OR MINGW ) else( APPLE OR MINGW )