[Dune] Missing libraries for Grape test?

[Christoph Grüninger]

Hi Dune,
is it just me or does the Grape test miss some libraries? Using the x64
version (nicely called opteron, how nostalgic), needed the following
changes to get Grape detected:

--- m4/grape.m4 (Revision 8640)
+++ m4/grape.m4 (Arbeitskopie)
@@ -65,7 +65,7 @@
     #   This is not the best choice, but testing without GL first and
     #   then trying again fails due to caching...
     CPPFLAGS="$GRAPE_CPPFLAGS $GL_CFLAGS -DENABLE_GRAPE"
-    LIBS="$LIBS $GL_LIBS -lXext"
+    LIBS="$LIBS $GL_LIBS -lXext -lX11 -ldl"
     LDFLAGS="$LDFLAGS $GL_LDFLAGS"
 
     # if we use the gnu linker add the grape path 

Can someone conform this? Probably there is a better way using some
other variables.

Greets
Christoph