42 lines
2.0 KiB
CMake
42 lines
2.0 KiB
CMake
# - MACRO_OPTIONAL_ADD_SUBDIRECTORY() combines ADD_SUBDIRECTORY() with an OPTION()
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# MACRO_OPTIONAL_ADD_SUBDIRECTORY( <dir> )
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# If you use MACRO_OPTIONAL_ADD_SUBDIRECTORY() instead of ADD_SUBDIRECTORY(),
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# this will have two effects
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# 1 - CMake will not complain if the directory doesn't exist
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# This makes sense if you want to distribute just one of the subdirs
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# in a source package, e.g. just one of the subdirs in kdeextragear.
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# 2 - If the directory exists, it will offer an option to skip the
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# subdirectory.
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# This is useful if you want to compile only a subset of all
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# directories.
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#
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# If the CMake variable DISABLE_ALL_OPTIONAL_SUBDIRECTORIES is set to TRUE
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# for the first CMake run on the project, all optional subdirectories will be disabled
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# by default (but can of course be enabled via the respective options).
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# E.g. the following will disable all optional subdirectories except the one named "kcalc":
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# $ cmake -DDISABLE_ALL_OPTIONAL_SUBDIRECTORIES=TRUE -DBUILD_kcalc=TRUE <srcdir>
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# Copyright (c) 2007, Alexander Neundorf, <neundorf@kde.org>
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#
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# Redistribution and use is allowed according to the terms of the BSD license.
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# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
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MACRO (MACRO_OPTIONAL_ADD_SUBDIRECTORY _dir )
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GET_FILENAME_COMPONENT(_fullPath ${_dir} ABSOLUTE)
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IF(EXISTS ${_fullPath}/CMakeLists.txt)
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IF(DISABLE_ALL_OPTIONAL_SUBDIRECTORIES)
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SET(_DEFAULT_OPTION_VALUE FALSE)
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ELSE(DISABLE_ALL_OPTIONAL_SUBDIRECTORIES)
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SET(_DEFAULT_OPTION_VALUE TRUE)
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ENDIF(DISABLE_ALL_OPTIONAL_SUBDIRECTORIES)
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IF(DISABLE_ALL_OPTIONAL_SUBDIRS AND NOT DEFINED BUILD_${_dir})
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SET(_DEFAULT_OPTION_VALUE FALSE)
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ENDIF(DISABLE_ALL_OPTIONAL_SUBDIRS AND NOT DEFINED BUILD_${_dir})
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OPTION(BUILD_${_dir} "Build directory ${_dir}" ${_DEFAULT_OPTION_VALUE})
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IF(BUILD_${_dir})
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ADD_SUBDIRECTORY(${_dir})
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ENDIF(BUILD_${_dir})
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ENDIF(EXISTS ${_fullPath}/CMakeLists.txt)
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ENDMACRO (MACRO_OPTIONAL_ADD_SUBDIRECTORY)
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