package/libglib2: add optional dependency in libselinux

If libselinux is selected, explicitly set --enable-selinux in the
configure options and build the library first.

Signed-off-by: Adam Duskett <Aduskett@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libglib2/libglib2.mk

@@ -137,6 +137,13 @@ LIBGLIB2_CONF_OPTS += --with-libiconv=gnu
 LIBGLIB2_DEPENDENCIES += libiconv
 endif
 
+ifeq ($(BR2_PACKAGE_LIBSELINUX),y)
+LIBGLIB2_CONF_OPTS += --enable-selinux
+LIBGLIB2_DEPENDENCIES += libselinux
+else
+LIBGLIB2_CONF_OPTS += --disable-selinux
+endif
+
 # Purge gdb-related files
 ifneq ($(BR2_PACKAGE_GDB),y)
 define LIBGLIB2_REMOVE_GDB_FILES