package/qt6/qt6base: add support for gui module

Signed-off-by: Jesse Van Gavere <jesseevg@gmail.com>
Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/qt6/qt6base/Config.in

@@ -30,6 +30,37 @@ config BR2_PACKAGE_QT6BASE_DBUS
 	help
 	  This option enables the D-Bus module.
 
+config BR2_PACKAGE_QT6BASE_GUI
+	bool "gui module"
+	select BR2_PACKAGE_FREETYPE
+	# At least one graphic backend must be enabled, so enable
+	# linuxfb if nothing is enabled.
+	select BR2_PACKAGE_QT6BASE_LINUXFB if \
+	       !BR2_PACKAGE_QT6BASE_XCB
+	help
+	  This option enables the Qt6Gui library.
+
+if BR2_PACKAGE_QT6BASE_GUI
+
+config BR2_PACKAGE_QT6BASE_LINUXFB
+	bool "linuxfb support"
+
+config BR2_PACKAGE_QT6BASE_XCB
+	bool "X.org XCB support"
+	depends on BR2_PACKAGE_XORG7
+	select BR2_PACKAGE_XLIB_LIBX11
+	select BR2_PACKAGE_LIBXCB
+	select BR2_PACKAGE_XCB_UTIL_IMAGE
+	select BR2_PACKAGE_XCB_UTIL_KEYSYMS
+	select BR2_PACKAGE_XCB_UTIL_RENDERUTIL
+	select BR2_PACKAGE_XCB_UTIL_WM
+	select BR2_PACKAGE_LIBXKBCOMMON
+
+comment "X.org XCB backend available if X.org is enabled"
+	depends on !BR2_PACKAGE_XORG7
+
+endif
+
 config BR2_PACKAGE_QT6BASE_NETWORK
 	bool "network module"
 	help

package/qt6/qt6base/qt6base.mk

@@ -40,7 +40,6 @@ QT6BASE_INSTALL_STAGING = YES
 QT6BASE_CONF_OPTS = \
 	-GNinja \
 	-DQT_HOST_PATH=$(HOST_DIR) \
-	-DFEATURE_gui=OFF \
 	-DFEATURE_concurrent=OFF \
 	-DFEATURE_xml=OFF \
 	-DFEATURE_sql=OFF \
@@ -141,6 +140,42 @@ else
 QT6BASE_CONF_OPTS += -DFEATURE_glib=OFF
 endif
 
+ifeq ($(BR2_PACKAGE_QT6BASE_GUI),y)
+QT6BASE_CONF_OPTS += \
+	-DFEATURE_gui=ON \
+	-DFEATURE_freetype=ON \
+	-DINPUT_opengl=no \
+	-DFEATURE_vulkan=OFF
+QT6BASE_DEPENDENCIES += freetype
+
+ifeq ($(BR2_PACKAGE_QT6BASE_LINUXFB),y)
+QT6BASE_CONF_OPTS += -DFEATURE_linuxfb=ON
+else
+QT6BASE_CONF_OPTS += -DFEATURE_linuxfb=OFF
+endif
+
+ifeq ($(BR2_PACKAGE_QT6BASE_XCB),y)
+QT6BASE_CONF_OPTS += \
+	-DFEATURE_xcb=ON \
+	-DFEATURE_xcb_xlib=ON \
+	-DFEATURE_xkbcommon=ON \
+	-DFEATURE_xkbcommon_x11=ON
+QT6BASE_DEPENDENCIES += \
+	libxcb \
+	libxkbcommon \
+	xcb-util-wm \
+	xcb-util-image \
+	xcb-util-keysyms \
+	xcb-util-renderutil \
+	xlib_libX11
+else
+QT6BASE_CONF_OPTS += -DFEATURE_xcb=OFF
+endif
+
+else
+QT6BASE_CONF_OPTS += -DFEATURE_gui=OFF
+endif
+
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 QT6BASE_CONF_OPTS += -DINPUT_openssl=yes
 QT6BASE_DEPENDENCIES += openssl