Index: /issm/trunk/m4/issm_options.m4
===================================================================
--- /issm/trunk/m4/issm_options.m4	(revision 5664)
+++ /issm/trunk/m4/issm_options.m4	(revision 5665)
@@ -69,8 +69,7 @@
 			;;
 			*darwin*)
-				MEXLIB=-L"$MATLAB_ROOT/bin/maci/ -lmex -lmx"
+				MEXLIB=" mexversion.o -L$MATLAB_ROOT/bin/maci/ -lmx -lmex -lmat -lstdc++"
 				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,$MATLAB_ROOT/extern/lib/maci/mexFunction.map"
-				MEXLINK="-Wl,-flat_namespace -undefined suppress -bundle -Wl,-exported_symbols_list,$MATLAB_ROOT/extern/lib/maci/mexFunction.map"
-
+				MEXLINK="-O -Wl,-flat_namespace -undefined suppress -bundle -Wl,-exported_symbols_list,$MATLAB_ROOT/extern/lib/maci/mexFunction.map"
 				MEXEXT=`$MATLAB_ROOT/bin/mexext`
 				MEXEXT=".$MEXEXT"
@@ -350,5 +349,5 @@
 			;;
 			*darwin*)
-			PETSCLIB="-L$PETSC_ROOT/$PETSC_ARCH/lib -L$PETSC_ROOT/lib -L$PETSC_ROOT/lib/$PETSC_ARCH -lpetscksp -lpetscdm -lpetscmat -lpetscvec -lpetscsnes -lpetscts -lpetsc"
+			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"
 			;;
 		esac