cmake/compilerflags.cmake

   1
   2 # add_target_property
   3 #  Adds one or more values to the specified property of the specified target.
   4 #  Note that there are properties which require (semicolon-separated) lists,
   5 #  while others require space-separated strings. The function has a list of
   6 #  properties of the former variety and handles the values accordingly
   7 function(add_target_property _module _propname)
   8     list(APPEND _list_properties COMPILE_DEFINITIONS INCLUDE_DIRECTORIES)
   9     set(_newvalue "")
  10     get_target_property(_oldvalue ${_module} ${_propname})
  11     if(_oldvalue)
  12         set(_newvalue ${_oldvalue})
  13     endif()
  14     list(FIND _list_properties ${_propname} _list_index)
  15     if(NOT _list_index EQUAL -1)
  16         # list property
  17         list(APPEND _newvalue ${ARGN})
  18     else()
  19         # string property
  20         foreach(_flag ${ARGN})
  21             set(_newvalue "${_newvalue} ${_flag}")
  22         endforeach()
  23     endif()
  24     set_property(TARGET ${_module} PROPERTY ${_propname} ${_newvalue})
  25 endfunction()
  26
  27 # Wrapper functions for the important properties, using add_target_property
  28 # where appropriate.
  29 # Note that the functions for string properties take a single string
  30 # argument while those for list properties can take a variable number of
  31 # arguments, all of which will be added to the list
  32 #
  33 # Examples:
  34 #  add_compile_flags("-pedantic -O5")
  35 #  add_target_link_flags(mymodule "-s --fatal-warnings")
  36 #  add_target_compile_flags(mymodule "-pedantic -O5")
  37 #  add_target_compile_definitions(mymodule WIN32 _WIN32 INLINE=inline)
  38 #  add_target_include_directories(mymodule include ../include)
  39 #  add_compile_flags_language("-std=gnu99" "C")
  40 function(add_compile_flags _flags)
  41     if(${ARGC} GREATER 1)
  42         message(STATUS "Excess arguments to add_compile_flags! Args ${ARGN}")
  43     endif()
  44     # Adds the compiler flag to both CMAKE_C_FLAGS and CMAKE_CXX_FLAGS
  45     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_flags}" PARENT_SCOPE)
  46     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${_flags}" PARENT_SCOPE)
  47     set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} ${_flags}" PARENT_SCOPE)
  48 endfunction()
  49
  50 function(add_compile_flags_language _flags _lang)
  51     if(NOT ${ARGC} EQUAL 2)
  52         message(STATUS "Wrong arguments to add_compile_flags_language! Args ${ARGN}")
  53     endif()
  54     # Adds the compiler flag to both CMAKE_C_FLAGS and CMAKE_CXX_FLAGS
  55     set(CMAKE_${_lang}_FLAGS "${CMAKE_${_lang}_FLAGS} ${_flags}" PARENT_SCOPE)
  56 endfunction()
  57
  58 function(add_target_compile_flags _module _flags)
  59     if(${ARGC} GREATER 2)
  60         message(STATUS "Excess arguments to add_target_compile_flags! Module ${_module}, args ${ARGN}")
  61     endif()
  62     add_target_property(${_module} COMPILE_FLAGS ${_flags})
  63 endfunction()
  64
  65 function(add_target_link_flags _module _flags)
  66     if(${ARGC} GREATER 2)
  67         message(STATUS "Excess arguments to add_target_link_flags! Module ${_module}, args ${ARGN}")
  68     endif()
  69     add_target_property(${_module} LINK_FLAGS ${_flags})
  70 endfunction()
  71
  72 function(add_target_compile_definitions _module)
  73     add_target_property(${_module} COMPILE_DEFINITIONS ${ARGN})
  74 endfunction()
  75
  76 function(add_target_include_directories _module)
  77     add_target_property(${_module} INCLUDE_DIRECTORIES ${ARGN})
  78 endfunction()