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2026-07-10 19:16:42 +03:00
commit 7f9dc067a1
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+# - 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.
+
+# 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 ${_fullPath})
+      if(${ARGC} EQUAL 2)
+        option(BUILD_${_dir} "Build directory ${_dir}" ${ARGV1})
+      else(${ARGC} EQUAL 2)
+        option(BUILD_${_dir} "Build directory ${_dir}" TRUE)
+      endif(${ARGC} EQUAL 2)
+      if(BUILD_${_dir})
+         add_subdirectory(${_dir})
+      endif(BUILD_${_dir})
+   endif(EXISTS ${_fullPath})
+endmacro (MACRO_OPTIONAL_ADD_SUBDIRECTORY)