Index: /issm/trunk-jpl/etc/environment.csh
===================================================================
--- /issm/trunk-jpl/etc/environment.csh	(revision 13043)
+++ /issm/trunk-jpl/etc/environment.csh	(revision 13044)
@@ -32,4 +32,10 @@
 if (-d $SLEPC_DIR) then
 	setenv LD_LIBRARY_PATH {$LD_LIBRARY_PATH}:$SLEPC_DIR/lib/{$ISSM_ARCH}
+endif
+
+#PETSC
+set TAO_DIR="$ISSM_DIR/externalpackages/tao/install"
+if (-d $TAO_DIR) then
+	setenv LD_LIBRARY_PATH {$LD_LIBRARY_PATH}:$TAO_DIR/lib/{$ISSM_ARCH}
 endif
 
Index: /issm/trunk-jpl/etc/environment.sh
===================================================================
--- /issm/trunk-jpl/etc/environment.sh	(revision 13043)
+++ /issm/trunk-jpl/etc/environment.sh	(revision 13044)
@@ -50,4 +50,11 @@
 	export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$SLEPC_DIR/lib/$ISSM_ARCH"
 	export LD_RUN_PATH="$LD_RUN_PATH:$SLEPC_DIR/lib/$ISSM_ARCH"
+fi
+
+#PETSC
+TAO_DIR="$ISSM_DIR/externalpackages/tao/install"
+if [ -d "$TAO_DIR" ]; then
+	export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$TAO_DIR/lib:$TAO_DIR/lib"
+	export LD_RUN_PATH="$LD_RUN_PATH:$TAO_DIR/lib"
 fi