Index: /issm/trunk-jpl/m4/issm_options.m4
===================================================================
--- /issm/trunk-jpl/m4/issm_options.m4	(revision 13273)
+++ /issm/trunk-jpl/m4/issm_options.m4	(revision 13274)
@@ -676,4 +676,7 @@
 	AC_MSG_CHECKING(for petsc headers and libraries in $PETSC_ROOT for architecture $PETSC_ARCH)
 	
+	dnl To ge PETSc's libraries:
+	dnl cd externalpackages/petsc/src
+	dnl make getlinklibs
 	if test -d "$PETSC_ROOT"; then