File imlib-config.dif of Package imlib

--- configure.in
+++ configure.in
@@ -137,7 +137,14 @@
   GX_LIBS="$GTK_LIBS"
 fi
 
-CPPFLAGS="$CPPFLAGS -I$includedir -I$prefix/include"
+case $includedir in
+  /usr/include|/usr/local/include) ;;
+  *) CPPFLAGS="$CPPFLAGS -I$includedir" ;;
+esac
+case $prefix in
+  /usr|/usr/local) ;;
+  *) CPPFLAGS="$CPPFLAGS -I$prefix/include" ;;
+esac
 
 SUPPORT_LIBS=""