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source: code/trunk/cmake/tools/GetGCCCompilerFlags.cmake @ 9691

Last change on this file since 9691 was 7448, checked in by rgrieder, 14 years ago

DEFINE_SYMBOL property is only added to compile flags for an executable.

  • Property svn:eol-style set to native
File size: 2.9 KB
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1 #
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6 #         modify it under the terms of the GNU General Public License
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17 #     Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
18 #
19 #
20 #  Author:
21 #    Reto Grieder
22 #  Description:
23 #    Tries to return all GCC compiler flags set for a target. This also
24 #    all definitions of the current directory.
25 #
26
27INCLUDE(SeparateFlags)
28
29FUNCTION(GET_GCC_COMPILER_FLAGS _target _flagsvar)
30
31  # General flags
32  STRING(TOUPPER "${CMAKE_BUILD_TYPE}" _build_type_upper)
33  SET(_flag_str "${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${_build_type_upper}}")
34
35  # Include directories
36  GET_DIRECTORY_PROPERTY(_include_dirs INCLUDE_DIRECTORIES)
37  IF(_include_dirs)
38    FOREACH(_directory ${_include_dirs})
39      SET(_flag_str "${_flag_str} -I${_directory}")
40    ENDFOREACH(_directory)
41  ENDIF()
42
43  # For shared libraries linked with gcc, we have to add -fPIC
44  GET_TARGET_PROPERTY(_target_type ${_target} TYPE)
45  IF(NOT MINGW AND ${_target_type} STREQUAL SHARED_LIBRARY)
46    SET(_flag_str "${_flag_str} -fPIC")
47  ENDIF()
48
49  # Target compile flags
50  GET_TARGET_PROPERTY(_target_flags ${_target} COMPILE_FLAGS)
51  IF(_target_flags)
52    SET(_flag_str "${_flag_str} ${_target_flags}")
53  ENDIF()
54
55  # Definitions from target and directory
56  GET_DIRECTORY_PROPERTY(_directory_defs                 COMPILE_DEFINITIONS)
57  GET_DIRECTORY_PROPERTY(_directory_defs_build_type      COMPILE_DEFINITIONS_${_build_type_upper})
58  GET_TARGET_PROPERTY(_target_defs            ${_target} COMPILE_DEFINITIONS)
59  GET_TARGET_PROPERTY(_target_defs_build_type ${_target} COMPILE_DEFINITIONS_${_build_type_upper})
60  IF(${_target_type} STREQUAL SHARED_LIBRARY)
61    GET_TARGET_PROPERTY(_target_def_symbol    ${_target} DEFINE_SYMBOL)
62  ENDIF()
63
64  # Prefix them all with a "-D" if the property was found
65  FOREACH(_def ${_directory_defs} ${_directory_defs_build_type} ${_target_defs}
66               ${_target_defs_build_type} ${_target_def_symbol})
67    IF(_def)
68      SET(_flag_str "${_flag_str} -D${_def}")
69    ENDIF(_def)
70  ENDFOREACH(_def)
71
72  SEPARATE_FLAGS("${_flag_str}" _flags)
73  LIST(REMOVE_DUPLICATES _flags)
74  SET(${_flagsvar} ${_flags} PARENT_SCOPE)
75
76ENDFUNCTION(GET_GCC_COMPILER_FLAGS)
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