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125 lines
4.8 KiB
CMake
125 lines
4.8 KiB
CMake
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# add_target_property
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# Adds one or more values to the specified property of the specified target.
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# Note that there are properties which require (semicolon-separated) lists,
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# while others require space-separated strings. The function has a list of
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# properties of the former variety and handles the values accordingly
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function(add_target_property _module _propname)
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list(APPEND _list_properties COMPILE_DEFINITIONS INCLUDE_DIRECTORIES)
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set(_newvalue "")
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get_target_property(_oldvalue ${_module} ${_propname})
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if(_oldvalue)
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set(_newvalue ${_oldvalue})
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endif()
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list(FIND _list_properties ${_propname} _list_index)
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if(NOT _list_index EQUAL -1)
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# list property
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list(APPEND _newvalue ${ARGN})
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else()
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# string property
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foreach(_flag ${ARGN})
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set(_newvalue "${_newvalue} ${_flag}")
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endforeach()
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endif()
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set_property(TARGET ${_module} PROPERTY ${_propname} ${_newvalue})
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endfunction()
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# Wrapper functions for the important properties, using add_target_property
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# where appropriate.
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# Note that the functions for string properties take a single string
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# argument while those for list properties can take a variable number of
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# arguments, all of which will be added to the list
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#
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# Examples:
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# add_target_compile_flags(mymodule "-pedantic -O5")
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# add_target_link_flags(mymodule "-s --fatal-warnings")
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# add_target_compile_definitions(mymodule WIN32 _WIN32 INLINE=inline)
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# add_target_include_directories(mymodule include ../include)
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function(add_target_compile_flags _module _flags)
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if(${ARGC} GREATER 2)
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message(FATAL_ERROR "Excess arguments to add_target_compile_flags! Module ${_module}, args ${ARGN}")
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endif()
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add_target_property(${_module} COMPILE_FLAGS ${_flags})
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endfunction()
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function(add_target_link_flags _module _flags)
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if(${ARGC} GREATER 2)
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message(FATAL_ERROR "Excess arguments to add_target_link_flags! Module ${_module}, args ${ARGN}")
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endif()
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add_target_property(${_module} LINK_FLAGS ${_flags})
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endfunction()
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function(add_target_compile_definitions _module)
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add_target_property(${_module} COMPILE_DEFINITIONS ${ARGN})
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endfunction()
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function(add_target_include_directories _module)
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add_target_property(${_module} INCLUDE_DIRECTORIES ${ARGN})
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endfunction()
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# replace_compiler_option
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# (taken from LLVM)
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# Replaces a compiler option or switch `_old' in `_var' by `_new'.
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# If `_old' is not in `_var', appends `_new' to `_var'.
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#
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# Example:
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# replace_compiler_option(CMAKE_CXX_FLAGS_RELEASE "-O3" "-O2")
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macro(replace_compiler_option _var _old _new)
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# If the option already is on the variable, don't add it:
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if("${${_var}}" MATCHES "(^| )${_new}($| )")
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set(__n "")
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else()
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set(__n "${_new}")
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endif()
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if("${${_var}}" MATCHES "(^| )${_old}($| )")
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string(REGEX REPLACE "(^| )${_old}($| )" " ${__n} " ${_var} "${${_var}}")
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else()
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set(${_var} "${${_var}} ${__n}")
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endif()
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endmacro(replace_compiler_option)
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# add_compile_flags
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# add_compile_flags_language
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# replace_compile_flags
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# replace_compile_flags_language
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# Add or replace compiler flags in the global scope for either all source
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# files or only those of the specified language.
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#
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# Examples:
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# add_compile_flags("-pedantic -O5")
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# add_compile_flags_language("-std=gnu99" "C")
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# replace_compile_flags("-O5" "-O3")
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# replace_compile_flags_language("-fno-exceptions" "-fexceptions" "CXX")
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function(add_compile_flags _flags)
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if(${ARGC} GREATER 1)
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message(FATAL_ERROR "Excess arguments to add_compile_flags! Args ${ARGN}")
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endif()
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# Adds the compiler flag for all code files: C, C++, and assembly
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_flags}" PARENT_SCOPE)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${_flags}" PARENT_SCOPE)
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set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} ${_flags}" PARENT_SCOPE)
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endfunction()
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function(add_compile_flags_language _flags _lang)
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if(NOT ${ARGC} EQUAL 2)
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message(FATAL_ERROR "Wrong arguments to add_compile_flags_language! Args ${ARGN}")
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endif()
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# Adds the compiler flag for the specified language only, e.g. CMAKE_C_FLAGS
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set(CMAKE_${_lang}_FLAGS "${CMAKE_${_lang}_FLAGS} ${_flags}" PARENT_SCOPE)
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endfunction()
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macro(replace_compile_flags _oldflags _newflags)
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if(NOT ${ARGC} EQUAL 2)
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message(FATAL_ERROR "Wrong arguments to replace_compile_flags! Args ${ARGN}")
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endif()
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replace_compiler_option(CMAKE_C_FLAGS ${_oldflags} ${_newflags})
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replace_compiler_option(CMAKE_CXX_FLAGS ${_oldflags} ${_newflags})
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replace_compiler_option(CMAKE_ASM_FLAGS ${_oldflags} ${_newflags})
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endmacro()
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macro(replace_compile_flags_language _oldflags _newflags _lang)
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if(NOT ${ARGC} EQUAL 3)
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message(FATAL_ERROR "Wrong arguments to replace_compile_flags_language! Args ${ARGN}")
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endif()
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replace_compiler_option(CMAKE_${_lang}_FLAGS ${_oldflags} ${_newflags})
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endmacro()
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