add GNU Makefiles for lib/cgraph

diff --git a/lib/cgraph/libcgraph.pc.in b/lib/cgraph/libcgraph.pc.in
new file mode 100644 (file)
index 0000000..fffbb58
--- /dev/null
+++ b/lib/cgraph/libcgraph.pc.in
@@ -0,0 +1,10 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@/@PACKAGE@
+
+Name: libcgraph
+Description: Graph library (file i/o, dot language parsing, graph, subgraph, node, edge, attribute, data structure manipulation)
+Version: @VERSION@
+Libs: -L${libdir} -lcgraph -lcdt
+Cflags: -I${includedir}