Init

CmakeIncludes/Ogre3D/PreprocessorUtils.cmake

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+#-------------------------------------------------------------------
+# This file is part of the CMake build system for OGRE
+#     (Object-oriented Graphics Rendering Engine)
+# For the latest info, see http://www.ogre3d.org/
+#
+# The contents of this file are placed in the public domain. Feel
+# free to make use of it in any way you like.
+#-------------------------------------------------------------------
+
+macro(get_preprocessor_entry CONTENTS KEYWORD VARIABLE)
+  string(REGEX MATCH
+    "# *define +${KEYWORD} +((\"([^\n]*)\")|([^ \n]*))"
+    PREPROC_TEMP_VAR
+    ${${CONTENTS}}
+  )
+  if (CMAKE_MATCH_3)
+    set(${VARIABLE} ${CMAKE_MATCH_3})
+  else ()
+    set(${VARIABLE} ${CMAKE_MATCH_4})
+  endif ()
+endmacro()
+
+macro(has_preprocessor_entry CONTENTS KEYWORD VARIABLE)
+  string(REGEX MATCH
+    "\n *# *define +(${KEYWORD})"
+    PREPROC_TEMP_VAR
+    ${${CONTENTS}}
+  )
+  if (CMAKE_MATCH_1)
+    set(${VARIABLE} TRUE)
+  else ()
+    set(${VARIABLE} FALSE)
+  endif ()
+endmacro()
+
+macro(replace_preprocessor_entry VARIABLE KEYWORD NEW_VALUE)
+  string(REGEX REPLACE 
+    "(// *)?# *define +${KEYWORD} +[^ \n]*"
+	"#define ${KEYWORD} ${NEW_VALUE}"
+	${VARIABLE}_TEMP
+	${${VARIABLE}}
+  )
+  set(${VARIABLE} ${${VARIABLE}_TEMP})  
+endmacro()
+
+macro(set_preprocessor_entry VARIABLE KEYWORD ENABLE)
+  if (${ENABLE})
+    set(TMP_REPLACE_STR "#define ${KEYWORD}")
+  else ()
+    set(TMP_REPLACE_STR "// #define ${KEYWORD}")
+  endif ()
+  string(REGEX REPLACE 
+    "(// *)?# *define +${KEYWORD} *\n"
+	${TMP_REPLACE_STR}
+	${VARIABLE}_TEMP
+	${${VARIABLE}}
+  )
+  set(${VARIABLE} ${${VARIABLE}_TEMP})  
+endmacro()
+