diff --git a/lib/ChangeLog b/lib/ChangeLog
index 5d3239b..3b619d8 100644
--- a/lib/ChangeLog
+++ b/lib/ChangeLog
@@ -1,3 +1,8 @@
+2005-04-25 Paul Jakma <paul.jakma@sun.com>
+
+	* Makefile.am: Refer to source files via srcdir variable, fix
+	  out-of-tree build breakage.
+
 2005-04-22 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
 
 	* thread.h: Fix type for struct thread_master add_type: should be
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 3913eb6..774a7f3 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -29,5 +29,5 @@
 
 EXTRA_DIST = regex.c regex-gnu.h memtypes.awk
 
-memtypes.h: memtypes.c memtypes.awk
-	($(GAWK) -f memtypes.awk memtypes.c > memtypes.h)
+memtypes.h: $(srcdir)/memtypes.c $(srcdir)/memtypes.awk
+	($(GAWK) -f $(srcdir)/memtypes.awk $(srcdir)memtypes.c > memtypes.h)