Squashed 'third_party/eigen/' content from commit 61d72f6
Change-Id: Iccc90fa0b55ab44037f018046d2fcffd90d9d025
git-subtree-dir: third_party/eigen
git-subtree-split: 61d72f6383cfa842868c53e30e087b0258177257
diff --git a/bench/btl/cmake/MacroOptionalAddSubdirectory.cmake b/bench/btl/cmake/MacroOptionalAddSubdirectory.cmake
new file mode 100644
index 0000000..545048b
--- /dev/null
+++ b/bench/btl/cmake/MacroOptionalAddSubdirectory.cmake
@@ -0,0 +1,31 @@
+# - 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)