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CMake/Tests/PositionIndependentTargets/targets/CMakeLists.txt

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Refactor generation of shared library flags CMAKE_SHARED_LIBRARY_<lang>_FLAGS has flags on various platforms for a variety of purposes that are correlated with shared libraries but not exclusive to them. Refactor generation of these flags to use new purpose-specific platform variables CMAKE_<lang>_COMPILE_OPTIONS_DLL CMAKE_<lang>_COMPILE_OPTIONS_PIC CMAKE_<lang>_COMPILE_OPTIONS_PIE Activate the DLL flags specifically for shared libraries. Add a new POSITION_INDEPENDENT_CODE target property to activate PIC/PIE flags, and default to true for shared libraries to preserve default behavior. Initialize the new property from CMAKE_POSITION_INDEPENDENT_CODE to allow easy global configuration in projects. Although the default behavior is unchanged by this refactoring, the new approach ignores CMAKE_SHARED_LIBRARY_<lang>_FLAGS completely. We must leave it set in case projects reference the value. Furthermore, if a project modifies CMAKE_SHARED_LIBRARY_<lang>_FLAGS it expects the new value to be used. Add policy CMP0018 to handle compatibility with projects that modify this platform variable. Add a PositionIndependentCode test on platforms where we can get meaningful results.
2012-05-30 22:13:09 +04:00
add_executable(test_target_executable_properties "${CMAKE_CURRENT_SOURCE_DIR}/../pic_main.cpp")
set_target_properties(test_target_executable_properties
PROPERTIES
POSITION_INDEPENDENT_CODE True
)
add_library(test_target_shared_library_properties SHARED "${CMAKE_CURRENT_SOURCE_DIR}/../pic_lib.cpp")
set_target_properties(test_target_shared_library_properties
PROPERTIES
POSITION_INDEPENDENT_CODE True
DEFINE_SYMBOL PIC_TEST_BUILD_DLL
)
add_library(test_target_static_library_properties STATIC "${CMAKE_CURRENT_SOURCE_DIR}/../pic_lib.cpp")
set_target_properties(test_target_static_library_properties
PROPERTIES
POSITION_INDEPENDENT_CODE True
COMPILE_DEFINITIONS PIC_TEST_STATIC_BUILD
)