glib-networking: fix build failure with gnutls3

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/glib-networking/glib-networking.mk

@@ -25,4 +25,11 @@ else
 GLIB_NETWORKING_CONF_OPT += --without-gnutls
 endif
 
+# gnutls 3.x+ doesn't use libgcrypt, it uses nettle/hogweed
+define GLIB_NETWORKING_NO_LIBGCRYPT
+	$(SED) 's:#include <gcrypt.h>::' $(@D)/tls/gnutls/gtlsbackend-gnutls.c
+endef
+
+GLIB_NETWORKING_POST_EXTRACT_HOOKS += GLIB_NETWORKING_NO_LIBGCRYPT
+
 $(eval $(autotools-package))