Index: /issm/trunk/configs/macmathieu64/configure.sh
===================================================================
--- /issm/trunk/configs/macmathieu64/configure.sh	(revision 11032)
+++ /issm/trunk/configs/macmathieu64/configure.sh	(revision 11033)
@@ -20,5 +20,5 @@
 	--with-scalapack-dir=$ISSM_TIER/externalpackages/petsc/install/ \
 	--with-mumps-dir=$ISSM_TIER/externalpackages/petsc/install/ \
-	--with-fortran-lib="/usr/local/lib/libgfortran.a" \
+	--with-fortran-lib="/usr/local/lib/x86_64/libgfortran.a" \
 	--with-math-lib="/usr/lib/libm.dylib" \
 	--with-graphics-lib="/usr/X11/lib/libX11.dylib" \