Index: /issm/trunk/m4/issm_options.m4
===================================================================
--- /issm/trunk/m4/issm_options.m4	(revision 8142)
+++ /issm/trunk/m4/issm_options.m4	(revision 8143)
@@ -72,4 +72,5 @@
 				dnl MEXLINK="-Wl,-twolevel_namespace -undefined error -arch i386 -Wl,-syslibroot,/Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5 -bundle -Wl,-exported_symbols_list,$MATLAB_ROOT/extern/lib/maci/mexFunction.map"
 				MEXLINK="-O -Wl,-flat_namespace -undefined suppress -bundle -Wl,-exported_symbols_list,$MATLAB_ROOT/extern/lib/maci/mexFunction.map"
+				dnl MEXLINK="-O -Wl,-flat_namespace -undefined suppress -bundle -Wl,-exported_symbols_list,$MATLAB_ROOT/extern/lib/maci64/mexFunction.map"
 				MEXEXT=`$MATLAB_ROOT/bin/mexext`
 				MEXEXT=".$MEXEXT"
@@ -354,5 +355,11 @@
 			;;
 			*darwin*)
+			if test "$PETSC_VERSION" = "2" ; then
 			PETSCLIB="-L$PETSC_ROOT/$PETSC_ARCH/lib -L$PETSC_ROOT/lib/$PETSC_ARCH/ -L$PETSC_ROOT/lib -L$PETSC_ROOT/lib/$PETSC_ARCH -lpetscksp -lpetscdm -lpetscmat -lpetscvec -lpetscsnes -lpetscts -lpetsc"
+			fi
+			if test "$PETSC_VERSION" = "3" ; then
+			PETSCLIB="-L$PETSC_ROOT/$PETSC_ARCH/lib -L$PETSC_ROOT/lib/$PETSC_ARCH/ -L$PETSC_ROOT/lib -L$PETSC_ROOT/lib/$PETSC_ARCH -lpetsc"
+			dnl PETSCLIB="-L$PETSC_ROOT/lib -lpetsc"
+			fi
 			;;
 		esac