1 files changed, 51 insertions, 37 deletions
diff --git a/modules/FindAGG.cmake b/modules/FindAGG.cmake
index 2e92ad31..cf336f40 100644
--- a/modules/FindAGG.cmake
+++ b/modules/FindAGG.cmake
@@ -7,40 +7,54 @@
 #  AGG_DEFINITIONS - Compiler switches required for using AGG
 #
 
-
-# use pkg-config to get the directories and then use these values
-# in the FIND_PATH() and FIND_LIBRARY() calls
-INCLUDE(UsePkgConfig)
-
-PKGCONFIG(libagg _AGGIncDir _AGGLinkDir _AGGLinkFlags _AGGCflags)
-
-set(AGG_DEFINITIONS ${_AGGCflags})
-
-FIND_PATH(AGG_INCLUDE_DIR agg2/agg_pixfmt_gray.h
-  ${_AGGIncDir}
-  /usr/include
-  /usr/local/include
-)
-
-FIND_LIBRARY(AGG_LIBRARIES NAMES agg
-  PATHS
-  ${_AGGLinkDir}
-  /usr/lib
-  /usr/local/lib
-)
-
-if (AGG_INCLUDE_DIR AND AGG_LIBRARIES)
-   set(AGG_FOUND TRUE)
-endif (AGG_INCLUDE_DIR AND AGG_LIBRARIES)
-
-if (AGG_FOUND)
-  if (NOT AGG_FIND_QUIETLY)
-    message(STATUS "Found AGG: ${AGG_LIBRARIES}")
-  endif (NOT AGG_FIND_QUIETLY)
-else (AGG_FOUND)
-  if (AGG_FIND_REQUIRED)
-    message(FATAL_ERROR "Could NOT find AGG")
-  endif (AGG_FIND_REQUIRED)
-endif (AGG_FOUND)
-
-MARK_AS_ADVANCED(AGG_INCLUDE_DIR AGG_LIBRARIES)
+IF (DEFINED CACHED_AGG)
+
+  # in cache already
+  IF ("${CACHED_AGG}" STREQUAL "YES")
+    SET(AGG_FOUND TRUE)
+  ENDIF ("${CACHED_AGG}" STREQUAL "YES")
+
+ELSE (DEFINED CACHED_AGG)
+
+  # use pkg-config to get the directories and then use these values
+  # in the FIND_PATH() and FIND_LIBRARY() calls
+  INCLUDE(UsePkgConfig)
+  
+  PKGCONFIG(libagg _AGGIncDir _AGGLinkDir _AGGLinkFlags _AGGCflags)
+  
+  set(AGG_DEFINITIONS ${_AGGCflags})
+  
+  FIND_PATH(AGG_INCLUDE_DIR agg2/agg_pixfmt_gray.h
+    ${_AGGIncDir}
+    /usr/include
+    /usr/local/include
+  )
+  
+  FIND_LIBRARY(AGG_LIBRARIES NAMES agg
+    PATHS
+    ${_AGGLinkDir}
+    /usr/lib
+    /usr/local/lib
+  )
+  
+  if (AGG_INCLUDE_DIR AND AGG_LIBRARIES)
+     set(AGG_FOUND TRUE)
+  endif (AGG_INCLUDE_DIR AND AGG_LIBRARIES)
+  
+  if (AGG_FOUND)
+    set(CACHED_AGG "YES")
+    if (NOT AGG_FIND_QUIETLY)
+      message(STATUS "Found AGG: ${AGG_LIBRARIES}")
+    endif (NOT AGG_FIND_QUIETLY)
+  else (AGG_FOUND)
+    set(CACHED_AGG "NO")
+    if (AGG_FIND_REQUIRED)
+      message(FATAL_ERROR "Could NOT find AGG")
+    endif (AGG_FIND_REQUIRED)
+  endif (AGG_FOUND)
+  
+  MARK_AS_ADVANCED(AGG_INCLUDE_DIR AGG_LIBRARIES)
+  
+  set(CACHED_AGG ${CACHED_AGG} CACHE INTERNAL "If libagg was checked")
+
+ENDIF (DEFINED CACHED_AGG)