libproc-ng: add pkg-config support

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

proc/Makefile.am

@@ -11,6 +11,9 @@ libproc_ng_la_LDFLAGS = \
 	-no-undefined \
 	-Wl,--version-script=$(top_srcdir)/proc/library.map
 
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = libproc-ng.pc
+
 libproc_ng_la_SOURCES = \
 	alloc.c \
 	alloc.h \

proc/libproc-ng.pc.in

@@ -0,0 +1,11 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: libproc-ng
+Description: Library to control and query process state
+Version: @VERSION@
+Libs: -L${libdir} -lproc-ng
+Libs.private:
+Cflags: -I${includedir}