package/network-manager: add optional dependency on gobject-introspection

Introspection gets enabled if gobject-introspection is.

Signed-off-by: Fiona Klute (WIWA) <fiona.klute@gmx.de>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/network-manager/network-manager.mk

@@ -26,7 +26,6 @@ NETWORK_MANAGER_DEPENDENCIES = \
 	util-linux
 
 NETWORK_MANAGER_CONF_OPTS = \
-	-Dintrospection=false \
 	-Ddocs=false \
 	-Dtests=no \
 	-Dqt=false \
@@ -50,6 +49,12 @@ ifeq ($(BR2_PACKAGE_DHCPCD),y)
 NETWORK_MANAGER_CONF_OPTS += -Ddhcpcd=/sbin/dhcpcd
 endif
 
+ifeq ($(BR2_PACKAGE_GOBJECT_INTROSPECTION),y)
+NETWORK_MANAGER_CONF_OPTS += -Dintrospection=true
+else
+NETWORK_MANAGER_CONF_OPTS += -Dintrospection=false
+endif
+
 ifeq ($(BR2_PACKAGE_IWD),y)
 NETWORK_MANAGER_DEPENDENCIES += iwd
 NETWORK_MANAGER_CONF_OPTS += -Diwd=true