build: allow configure and build in a separate directory
Some .h files in lib/ are autogenerated. The search path should
include the build directory and the source directory. They usually
match but sometimes, they may be different. For example:
$ mkdir build
$ cd build
$ ../configure
$ make
diff --git a/ospfclient/Makefile.am b/ospfclient/Makefile.am
index b8aae84..607bbed 100644
--- a/ospfclient/Makefile.am
+++ b/ospfclient/Makefile.am
@@ -1,6 +1,6 @@
## Automake.am for OSPF API client
-INCLUDES = @INCLUDES@ -I.. -I$(top_srcdir) -I$(top_srcdir)/lib
+INCLUDES = @INCLUDES@ -I.. -I$(top_srcdir) -I$(top_srcdir)/lib -I$(top_builddir)/lib
lib_LTLIBRARIES = libospfapiclient.la
libospfapiclient_la_LDFLAGS = -version 0:0:0