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annotate PrecompiledHeader.cmake @ 18:fcb7a71a22c1

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Make it possible to turn off asserting for the RBTree template header.
author Tom Fredrik Blenning Klaussen <bfg@blenning.no>
date Wed, 29 Aug 2012 20:04:05 +0200
parents a3834af36579
children
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1 # Macro for setting up precompiled headers. Usage:
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2 #
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3 # add_precompiled_header(target header.h [FORCEINCLUDE])
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4 #
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5 # MSVC: A source file with the same name as the header must exist and
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6 # be included in the target (E.g. header.cpp).
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7 #
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8 # MSVC: Add FORCEINCLUDE to automatically include the precompiled
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9 # header file from every source file.
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10 #
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11 # GCC: The precompiled header is always automatically included from
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12 # every header file.
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13 MACRO(ADD_PRECOMPILED_HEADER _targetName _input)
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14 GET_FILENAME_COMPONENT(_inputWe ${_input} NAME_WE)
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15 SET(pch_source ${_inputWe}.cpp)
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16 FOREACH(arg ${ARGN})
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17 IF(arg STREQUAL FORCEINCLUDE)
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18 SET(FORCEINCLUDE ON)
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19 ELSE(arg STREQUAL FORCEINCLUDE)
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20 SET(FORCEINCLUDE OFF)
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21 ENDIF(arg STREQUAL FORCEINCLUDE)
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22 ENDFOREACH(arg)
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23
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24 IF(MSVC)
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25 GET_TARGET_PROPERTY(sources ${_targetName} SOURCES)
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26 SET(_sourceFound FALSE)
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27 FOREACH(_source ${sources})
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28 SET(PCH_COMPILE_FLAGS "")
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29 IF(_source MATCHES \\.\(cc|cxx|cpp\)$)
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30 GET_FILENAME_COMPONENT(_sourceWe ${_source} NAME_WE)
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31 IF(_sourceWe STREQUAL ${_inputWe})
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32 SET(PCH_COMPILE_FLAGS "${PCH_COMPILE_FLAGS} /Yc${_input}")
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33 SET(_sourceFound TRUE)
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34 ELSE(_sourceWe STREQUAL ${_inputWe})
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35 SET(PCH_COMPILE_FLAGS "${PCH_COMPILE_FLAGS} /Yu${_input}")
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36 IF(FORCEINCLUDE)
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37 SET(PCH_COMPILE_FLAGS "${PCH_COMPILE_FLAGS} /FI${_input}")
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38 ENDIF(FORCEINCLUDE)
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39 ENDIF(_sourceWe STREQUAL ${_inputWe})
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40 SET_SOURCE_FILES_PROPERTIES(${_source} PROPERTIES COMPILE_FLAGS "${PCH_COMPILE_FLAGS}")
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41 ENDIF(_source MATCHES \\.\(cc|cxx|cpp\)$)
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42 ENDFOREACH()
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43 IF(NOT _sourceFound)
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44 MESSAGE(FATAL_ERROR "A source file for ${_input} was not found. Required for MSVC builds.")
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45 ENDIF(NOT _sourceFound)
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46 ENDIF(MSVC)
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47
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48 IF(CMAKE_COMPILER_IS_GNUCXX)
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49 GET_FILENAME_COMPONENT(_name ${_input} NAME)
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50 SET(_source "${CMAKE_CURRENT_SOURCE_DIR}/${_input}")
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51 SET(_outdir "${CMAKE_CURRENT_BINARY_DIR}/${_name}.gch")
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52 MAKE_DIRECTORY(${_outdir})
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53 SET(_output "${_outdir}/.c++")
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54
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55 STRING(TOUPPER "CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}" _flags_var_name)
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56 SET(_compiler_FLAGS ${${_flags_var_name}})
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57
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58 GET_DIRECTORY_PROPERTY(_directory_flags INCLUDE_DIRECTORIES)
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59 FOREACH(item ${_directory_flags})
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60 LIST(APPEND _compiler_FLAGS "-I${item}")
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61 ENDFOREACH(item)
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62
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63 GET_DIRECTORY_PROPERTY(_directory_flags DEFINITIONS)
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64 LIST(APPEND _compiler_FLAGS ${_directory_flags})
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65
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66 SEPARATE_ARGUMENTS(_compiler_FLAGS)
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67 MESSAGE("${CMAKE_CXX_COMPILER} -DPCHCOMPILE ${_compiler_FLAGS} -x c++-header -o {_output} ${_source}")
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68 ADD_CUSTOM_COMMAND(
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69 OUTPUT ${_output}
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70 COMMAND ${CMAKE_CXX_COMPILER} ${_compiler_FLAGS} -x c++-header -o ${_output} ${_source}
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71 DEPENDS ${_source} )
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72 ADD_CUSTOM_TARGET(${_targetName}_gch DEPENDS ${_output})
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73 ADD_DEPENDENCIES(${_targetName} ${_targetName}_gch)
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74 SET_TARGET_PROPERTIES(${_targetName} PROPERTIES COMPILE_FLAGS "-include ${_name} -Winvalid-pch")
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75 ENDIF(CMAKE_COMPILER_IS_GNUCXX)
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76 ENDMACRO()