pkgconfig: link upnp, nat-pmp

Change-Id: I6b373a24e1ca9db3ad4684627d1c27b5a9ace706

CMakeLists.txt

@@ -81,6 +81,7 @@ if (DHTNET_PUPNP)
             src/upnp/protocol/pupnp/pupnp.cpp
             src/upnp/protocol/pupnp/upnp_igd.cpp
         )
+        set (requiresprivate "${requiresprivate} libupnp")
     endif()
 endif()
 if (DHTNET_NATPMP)
@@ -99,6 +100,7 @@ if (DHTNET_NATPMP)
             src/upnp/protocol/natpmp/nat_pmp.cpp
             src/upnp/protocol/natpmp/pmp_igd.cpp
         )
+        set (libsprivate "${libsprivate} ${natpmp_LIBRARIES}")
     endif()
 endif()
 

dhtnet.pc.in

@@ -6,6 +6,7 @@ Name: dhtnet
 Description: C++ peer to peer networking library
 Version: @VERSION@
 Libs: -L${libdir} -ldhtnet
+Libs.private: @libsprivate@
 Requires: opendht >= 2.6
-Requires.private: libpjproject
+Requires.private: libpjproject @requiresprivate@
 Cflags: -I${includedir}