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Diffstat (limited to 'modules/MacroOptionalAddSubdirectory.cmake')
| -rw-r--r-- | modules/MacroOptionalAddSubdirectory.cmake | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/modules/MacroOptionalAddSubdirectory.cmake b/modules/MacroOptionalAddSubdirectory.cmake new file mode 100644 index 00000000..ec0ea30a --- /dev/null +++ b/modules/MacroOptionalAddSubdirectory.cmake @@ -0,0 +1,41 @@ +# - MACRO_OPTIONAL_ADD_SUBDIRECTORY() combines ADD_SUBDIRECTORY() with an OPTION() +# MACRO_OPTIONAL_ADD_SUBDIRECTORY( <dir> ) +# If you use MACRO_OPTIONAL_ADD_SUBDIRECTORY() instead of ADD_SUBDIRECTORY(), +# this will have two effects +# 1 - CMake will not complain if the directory doesn't exist +# This makes sense if you want to distribute just one of the subdirs +# in a source package, e.g. just one of the subdirs in kdeextragear. +# 2 - If the directory exists, it will offer an option to skip the +# subdirectory. +# This is useful if you want to compile only a subset of all +# directories. +# +# If the CMake variable DISABLE_ALL_OPTIONAL_SUBDIRECTORIES is set to TRUE +# for the first CMake run on the project, all optional subdirectories will be disabled +# by default (but can of course be enabled via the respective options). +# E.g. the following will disable all optional subdirectories except the one named "kcalc": +# $ cmake -DDISABLE_ALL_OPTIONAL_SUBDIRECTORIES=TRUE -DBUILD_kcalc=TRUE <srcdir> + +# Copyright (c) 2007, Alexander Neundorf, <neundorf@kde.org> +# +# Redistribution and use is allowed according to the terms of the BSD license. +# For details see the accompanying COPYING-CMAKE-SCRIPTS file. + + +MACRO (MACRO_OPTIONAL_ADD_SUBDIRECTORY _dir ) + GET_FILENAME_COMPONENT(_fullPath ${_dir} ABSOLUTE) + IF(EXISTS ${_fullPath}/CMakeLists.txt) + IF(DISABLE_ALL_OPTIONAL_SUBDIRECTORIES) + SET(_DEFAULT_OPTION_VALUE FALSE) + ELSE(DISABLE_ALL_OPTIONAL_SUBDIRECTORIES) + SET(_DEFAULT_OPTION_VALUE TRUE) + ENDIF(DISABLE_ALL_OPTIONAL_SUBDIRECTORIES) + IF(DISABLE_ALL_OPTIONAL_SUBDIRS AND NOT DEFINED BUILD_${_dir}) + SET(_DEFAULT_OPTION_VALUE FALSE) + ENDIF(DISABLE_ALL_OPTIONAL_SUBDIRS AND NOT DEFINED BUILD_${_dir}) + OPTION(BUILD_${_dir} "Build directory ${_dir}" ${_DEFAULT_OPTION_VALUE}) + IF(BUILD_${_dir}) + ADD_SUBDIRECTORY(${_dir}) + ENDIF(BUILD_${_dir}) + ENDIF(EXISTS ${_fullPath}/CMakeLists.txt) +ENDMACRO (MACRO_OPTIONAL_ADD_SUBDIRECTORY) |