173 lines
6.4 KiB
CMake
173 lines
6.4 KiB
CMake
# This file sets the basic flags for the C++ language in CMake.
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# It also loads the available platform file for the system-compiler
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# if it exists.
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GET_FILENAME_COMPONENT(CMAKE_BASE_NAME ${CMAKE_CXX_COMPILER} NAME_WE)
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# since the gnu compiler has several names force g++
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IF(CMAKE_COMPILER_IS_GNUCXX)
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SET(CMAKE_BASE_NAME g++)
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ENDIF(CMAKE_COMPILER_IS_GNUCXX)
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SET(CMAKE_SYSTEM_AND_CXX_COMPILER_INFO_FILE
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${CMAKE_ROOT}/Modules/Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_BASE_NAME}.cmake)
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INCLUDE(Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_BASE_NAME} OPTIONAL)
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# for most systems a module is the same as a shared library
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# so unless the variable CMAKE_MODULE_EXISTS is set just
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# copy the values from the LIBRARY variables
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IF(NOT CMAKE_MODULE_EXISTS)
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SET(CMAKE_SHARED_MODULE_CXX_FLAGS ${CMAKE_SHARED_LIBRARY_CXX_FLAGS})
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ENDIF(NOT CMAKE_MODULE_EXISTS)
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# Create a set of shared library variable specific to C++
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# For 90% of the systems, these are the same flags as the C versions
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# so if these are not set just copy the flags from the c version
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IF(NOT CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS)
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SET(CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS ${CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS})
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ENDIF(NOT CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS)
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IF(NOT CMAKE_SHARED_LIBRARY_CXX_FLAGS)
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SET(CMAKE_SHARED_LIBRARY_CXX_FLAGS ${CMAKE_SHARED_LIBRARY_C_FLAGS})
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ENDIF(NOT CMAKE_SHARED_LIBRARY_CXX_FLAGS)
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IF(NOT CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS)
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SET(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS ${CMAKE_SHARED_LIBRARY_LINK_C_FLAGS})
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ENDIF(NOT CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS)
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IF(NOT CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG)
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SET(CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG ${CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG})
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ENDIF(NOT CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG)
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IF(NOT CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG_SEP)
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SET(CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG_SEP ${CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP})
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ENDIF(NOT CMAKE_SHARED_LIBRARY_RUNTIME_CXX_FLAG_SEP)
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IF(NOT CMAKE_INCLUDE_FLAG_CXX)
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SET(CMAKE_INCLUDE_FLAG_CXX ${CMAKE_INCLUDE_FLAG_C})
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ENDIF(NOT CMAKE_INCLUDE_FLAG_CXX)
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IF(NOT CMAKE_INCLUDE_FLAG_SEP_CXX)
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SET(CMAKE_INCLUDE_FLAG_SEP_CXX ${CMAKE_INCLUDE_FLAG_SEP_C})
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ENDIF(NOT CMAKE_INCLUDE_FLAG_SEP_CXX)
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# repeat for modules
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IF(NOT CMAKE_SHARED_MODULE_CREATE_CXX_FLAGS)
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SET(CMAKE_SHARED_MODULE_CREATE_CXX_FLAGS ${CMAKE_SHARED_MODULE_CREATE_C_FLAGS})
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ENDIF(NOT CMAKE_SHARED_MODULE_CREATE_CXX_FLAGS)
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IF(NOT CMAKE_SHARED_MODULE_CXX_FLAGS)
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SET(CMAKE_SHARED_MODULE_CXX_FLAGS ${CMAKE_SHARED_MODULE_C_FLAGS})
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ENDIF(NOT CMAKE_SHARED_MODULE_CXX_FLAGS)
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IF(NOT CMAKE_SHARED_MODULE_LINK_CXX_FLAGS)
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SET(CMAKE_SHARED_MODULE_LINK_CXX_FLAGS ${CMAKE_SHARED_MODULE_LINK_FLAGS})
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ENDIF(NOT CMAKE_SHARED_MODULE_LINK_CXX_FLAGS)
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IF(NOT CMAKE_SHARED_MODULE_RUNTIME_CXX_FLAG)
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SET(CMAKE_SHARED_MODULE_RUNTIME_CXX_FLAG ${CMAKE_SHARED_MODULE_RUNTIME_FLAG})
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ENDIF(NOT CMAKE_SHARED_MODULE_RUNTIME_CXX_FLAG)
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IF(NOT CMAKE_SHARED_MODULE_RUNTIME_CXX_FLAG_SEP)
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SET(CMAKE_SHARED_MODULE_RUNTIME_CXX_FLAG_SEP ${CMAKE_SHARED_MODULE_RUNTIME_FLAG_SEP})
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ENDIF(NOT CMAKE_SHARED_MODULE_RUNTIME_CXX_FLAG_SEP)
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# add the flags to the cache based
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# on the initial values computed in the platform/*.cmake files
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# use _INIT variables so that this only happens the first time
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# and you can set these flags in the cmake cache
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SET (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS_ENV_INIT} $ENV{CXXFLAGS} ${CMAKE_CXX_FLAGS_INIT}" CACHE STRING
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"Flags used by the compiler during all build types.")
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IF(NOT CMAKE_NOT_USING_CONFIG_FLAGS)
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SET (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG_INIT}" CACHE STRING
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"Flags used by the compiler during debug builds.")
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SET (CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL_INIT}" CACHE STRING
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"Flags used by the compiler during release minsize builds.")
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SET (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE_INIT}" CACHE STRING
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"Flags used by the compiler during release builds (/MD /Ob1 /Oi /Ot /Oy /Gs will produce slightly less optimized but smaller files).")
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SET (CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO_INIT}" CACHE STRING
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"Flags used by the compiler during Release with Debug Info builds.")
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ENDIF(NOT CMAKE_NOT_USING_CONFIG_FLAGS)
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INCLUDE(CMakeCommonLanguageInclude)
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# now define the following rules:
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# CMAKE_CXX_CREATE_SHARED_LIBRARY
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# CMAKE_CXX_CREATE_SHARED_MODULE
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# CMAKE_CXX_CREATE_STATIC_LIBRARY
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# CMAKE_CXX_COMPILE_OBJECT
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# CMAKE_CXX_LINK_EXECUTABLE
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# variables supplied by the generator at use time
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# <TARGET>
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# <TARGET_BASE> the target without the suffix
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# <OBJECTS>
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# <OBJECT>
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# <LINK_LIBRARIES>
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# <FLAGS>
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# <LINK_FLAGS>
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# CXX compiler information
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# <CMAKE_CXX_COMPILER>
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# <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS>
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# <CMAKE_CXX_SHARED_MODULE_CREATE_FLAGS>
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# <CMAKE_CXX_LINK_FLAGS>
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# Static library tools
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# <CMAKE_AR>
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# <CMAKE_RANLIB>
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# create a shared C++ library
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IF(NOT CMAKE_CXX_CREATE_SHARED_LIBRARY)
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SET(CMAKE_CXX_CREATE_SHARED_LIBRARY
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"<CMAKE_CXX_COMPILER> <CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> <CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
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ENDIF(NOT CMAKE_CXX_CREATE_SHARED_LIBRARY)
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IF(CMAKE_COMPILER_IS_GNUCXX)
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SET(CMAKE_CXX_CREATE_SHARED_LIBRARY "${CMAKE_CXX_CREATE_SHARED_LIBRARY} -lgcc")
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ENDIF(CMAKE_COMPILER_IS_GNUCXX)
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# create a c++ shared module copy the shared library rule by default
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IF(NOT CMAKE_CXX_CREATE_SHARED_MODULE)
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SET(CMAKE_CXX_CREATE_SHARED_MODULE ${CMAKE_CXX_CREATE_SHARED_LIBRARY})
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ENDIF(NOT CMAKE_CXX_CREATE_SHARED_MODULE)
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# create a C++ static library
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IF(NOT CMAKE_CXX_CREATE_STATIC_LIBRARY)
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SET(CMAKE_CXX_CREATE_STATIC_LIBRARY
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"<CMAKE_AR> cr <TARGET> <LINK_FLAGS> <OBJECTS> "
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"<CMAKE_RANLIB> <TARGET> ")
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ENDIF(NOT CMAKE_CXX_CREATE_STATIC_LIBRARY)
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# compile a C++ file into an object file
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IF(NOT CMAKE_CXX_COMPILE_OBJECT)
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SET(CMAKE_CXX_COMPILE_OBJECT
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"<CMAKE_CXX_COMPILER> -o <OBJECT> <FLAGS> -c <SOURCE>")
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ENDIF(NOT CMAKE_CXX_COMPILE_OBJECT)
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IF(NOT CMAKE_CXX_LINK_EXECUTABLE)
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SET(CMAKE_CXX_LINK_EXECUTABLE
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"<CMAKE_CXX_COMPILER> <CMAKE_CXX_LINK_FLAGS> <LINK_FLAGS> <FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>")
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ENDIF(NOT CMAKE_CXX_LINK_EXECUTABLE)
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IF(CMAKE_USER_MAKE_RULES_OVERRIDE)
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INCLUDE(${CMAKE_USER_MAKE_RULES_OVERRIDE})
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ENDIF(CMAKE_USER_MAKE_RULES_OVERRIDE)
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MARK_AS_ADVANCED(
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CMAKE_BUILD_TOOL
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CMAKE_VERBOSE_MAKEFILE
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CMAKE_CXX_FLAGS
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CMAKE_CXX_FLAGS_RELEASE
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CMAKE_CXX_FLAGS_RELWITHDEBINFO
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CMAKE_CXX_FLAGS_MINSIZEREL
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CMAKE_CXX_FLAGS_DEBUG)
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SET(CMAKE_CXX_INFOMATION_LOADED 1)
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