qt53d: enable assimpsceneparser plugin

- add hint to help text
- add assimp dependency
- always install the gltf (and any future) sceneparser to target.

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Tested-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
[Thomas: update commit message as suggested by Arnout.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/qt5/qt53d/Config.in

@@ -12,6 +12,8 @@ config BR2_PACKAGE_QT53D
 
 	  This package corresponds to the qt53d module.
 
+	  Enable the assimp package to gain the assimp sceneparser plugin.
+
 	  http://doc.qt.io/qt-5/qt3d-index.html
 
 comment "qt53d module needs an OpenGL-capable backend"

package/qt5/qt53d/qt53d.mk

@@ -10,6 +10,10 @@ QT53D_SOURCE = qt3d-opensource-src-$(QT5SVG_VERSION).tar.xz
 QT53D_DEPENDENCIES = qt5base qt5declarative
 QT53D_INSTALL_STAGING = YES
 
+ifeq ($(BR2_PACKAGE_ASSIMP),y)
+QT53D_DEPENDENCIES += assimp
+endif
+
 ifeq ($(BR2_PACKAGE_QT5BASE_LICENSE_APPROVED),y)
 QT53D_LICENSE = GPLv2+ or LGPLv3
 QT53D_LICENSE_FILES = LICENSE.GPL LICENSE.LGPLv3
@@ -34,6 +38,7 @@ endef
 ifeq ($(BR2_STATIC_LIBS),)
 define QT53D_INSTALL_TARGET_CMDS
 	cp -dpf $(STAGING_DIR)/usr/lib/libQt53D*.so.* $(TARGET_DIR)/usr/lib
+	cp -dpfr $(STAGING_DIR)/usr/lib/qt/plugins/sceneparsers $(TARGET_DIR)/usr/lib/qt/plugins
 	cp -dpfr $(STAGING_DIR)/usr/qml/Qt3D $(TARGET_DIR)/usr/qml
 endef
 endif