Add simple pkg-config file for libzscanner library

configure.ac

@@ -58,7 +58,9 @@ LT_INIT
 # Use pkg-config
 m4_ifdef([PKG_INSTALLDIR], [PKG_INSTALLDIR], [AC_SUBST([pkgconfigdir], ['${libdir}/pkgconfig'])])
 AC_CONFIG_FILES([src/libknot.pc
-		 src/dnssec/libdnssec.pc])
+		 src/dnssec/libdnssec.pc
+		 src/zscanner/libzscanner.pc
+		 ])
 
 # Build Knot DNS daemon
 AC_ARG_ENABLE([daemon],

src/zscanner/Makefile.am

@@ -5,6 +5,9 @@ AM_CPPFLAGS = \
 
 lib_LTLIBRARIES = libzscanner.la
 
+# pkg-config
+pkgconfig_DATA = libzscanner.pc
+
 EXTRA_DIST =				\
 	scanner.rl			\
 	scanner_body.rl			\

src/zscanner/libzscanner.pc.in

+prefix=@prefix@
+exec_prefix=@prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: libzscanner
+Description: Knot DNS Zone Parsing library
+URL: https://www.knot-dns.cz
+Version: @PACKAGE_VERSION@
+Libs: -L${libdir} -lzscanner
+Cflags: -I${includedir}