add & install pkgconfig file

.gitignore

@@ -2,6 +2,7 @@ aclocal.m4
 autom4te*.cache
 configure
 config.h*
+confdefs.h
 config.status
 libtool
 stamp-h*
@@ -23,5 +24,6 @@ test-driver
 
 capn-test
 capnpc-c
+c-capnproto.pc
 
 *.tar.gz

Makefile.am

@@ -11,6 +11,10 @@ include_HEADERS =
 
 EXTRA_DIST += README.md
 
+EXTRA_DIST += c-capnproto.pc.in
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = c-capnproto.pc
+
 AM_CPPFLAGS = -I${srcdir}/lib
 
 lib_LTLIBRARIES += libcapnp_c.la

c-capnproto.pc.in

@@ -0,0 +1,12 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+bindir=@bindir@
+includedir=@includedir@
+codegen=${bindir}/capnpc-c
+
+Name: c-capnproto
+Description: Cap'n Proto C bindings
+Version: @PACKAGE_VERSION@
+Libs: -L${libdir} -lcapnp_c
+Cflags: -I${includedir}

configure.ac

@@ -39,5 +39,6 @@ AC_CONFIG_SUBDIRS([gtest/googletest])
 
 AC_CONFIG_FILES([
 	Makefile
+	c-capnproto.pc
 ])
 AC_OUTPUT