diff --git a/sllinux_def b/sllinux_def
new file mode 100644
index 00000000..66a6cc3c
--- /dev/null
+++ b/sllinux_def
@@ -0,0 +1,12 @@
+#--------------------------------------------------------------------------
+# general defines used within the PSI makefile hierarchy
+#
+# Mark Koennecke, July 2003
+#-------------------------------------------------------------------------
+
+#DFORTIFY= -DFORTIFY -I$(ROOT)/$(SRC)
+#FORTIFYOBJ= fortify.o strdup.o
+
+MFLAGS=-f $(SRC)makefile_linux$(DUMMY) SRC=$(SRC)
+
+HDFROOT=/afs/psi.ch/project/sinq/sl-linux