diff --git a/gst-libs/gst/gl/Makefile.am b/gst-libs/gst/gl/Makefile.am
index f1cb9e1789..3f04a519e2 100644
--- a/gst-libs/gst/gl/Makefile.am
+++ b/gst-libs/gst/gl/Makefile.am
@@ -152,6 +152,7 @@ gir_sources=$(patsubst %,$(srcdir)/%, $(libgstgl_@GST_API_VERSION@_la_SOURCES))
 GstGL-@GST_API_VERSION@.gir: $(INTROSPECTION_SCANNER) libgstgl-@GST_API_VERSION@.la
 	$(AM_V_GEN)PKG_CONFIG_PATH="$(GST_PKG_CONFIG_PATH)" GI_SCANNER_DISABLE_CACHE=yes\
 		GST_PLUGIN_SYSTEM_PATH_1_0="" GST_PLUGIN_PATH_1_0="" GST_REGISTRY_UPDATE=no \
+		CPPFLAGS="$(CPPFLAGS)" CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" CC="$(CC)" PKG_CONFIG="$(PKG_CONFIG)" DLLTOOL="$(DLLTOOL)" \
 		$(INTROSPECTION_SCANNER) -v --namespace GstGL \
 		--nsversion=@GST_API_VERSION@ \
 		--identifier-prefix=Gst \