package/{wlroots,cage}: change mesa3d dependency to virtual libegl/libgles

Since commits:
https://github.com/swaywm/wlroots/commit/c2288a7b88240e4377bfc1c67b44efb58f704a42
https://github.com/swaywm/wlroots/commit/e18599b05e0f0cbeba11adbd489e801285470eab

Mesa dependency is no longer required. Wlroots is able to run on
drivers that provide EGL and GLES2.0 support, and with specific EGL
wayland extensions.  (thus the BR2_PACKAGE_HAS_LIBEGL_WAYLAND
dependency)

This was verified on NXP's i.MX8MMini using imx-gpu-viv driver.

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Gilles Talis <gilles.talis@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/cage/Config.in

@@ -1,6 +1,7 @@
-comment "cage needs udev, mesa3d w/ EGL and GLES support"
-	depends on !BR2_PACKAGE_MESA3D_OPENGL_EGL || \
-		!BR2_PACKAGE_MESA3D_OPENGL_ES || \
+comment "cage needs udev, EGL w/ Wayland backend and OpenGL ES support"
+	depends on !BR2_PACKAGE_HAS_LIBEGL || \
+		!BR2_PACKAGE_HAS_LIBEGL_WAYLAND || \
+		!BR2_PACKAGE_HAS_LIBGLES || \
 		!BR2_PACKAGE_HAS_UDEV
 
 comment "cage needs a toolchain w/ threads, dynamic library"
@@ -11,9 +12,10 @@ config BR2_PACKAGE_CAGE
 	bool "cage"
 	depends on !BR2_STATIC_LIBS # wlroots
 	depends on BR2_TOOLCHAIN_HAS_THREADS # wlroots
+	depends on BR2_PACKAGE_HAS_LIBEGL # wlroots
+	depends on BR2_PACKAGE_HAS_LIBEGL_WAYLAND # wlroots
+	depends on BR2_PACKAGE_HAS_LIBGLES # wlroots
 	depends on BR2_PACKAGE_HAS_UDEV # wlroots
-	depends on BR2_PACKAGE_MESA3D_OPENGL_EGL # wlroots
-	depends on BR2_PACKAGE_MESA3D_OPENGL_ES # wlroots
 	select BR2_PACKAGE_WLROOTS
 	help
 	  Kiosk compositor for Wayland, which displays a single

package/wlroots/Config.in

@@ -1,6 +1,7 @@
-comment "wlroots needs udev, mesa3d w/ EGL and GLES support"
-	depends on !BR2_PACKAGE_MESA3D_OPENGL_EGL || \
-		!BR2_PACKAGE_MESA3D_OPENGL_ES || \
+comment "wlroots needs udev, EGL w/ Wayland backend and OpenGL ES support"
+	depends on !BR2_PACKAGE_HAS_LIBEGL || \
+		!BR2_PACKAGE_HAS_LIBEGL_WAYLAND || \
+		!BR2_PACKAGE_HAS_LIBGLES || \
 		!BR2_PACKAGE_HAS_UDEV
 
 comment "wlroots needs a toolchain w/ threads, dynamic library"
@@ -12,11 +13,9 @@ config BR2_PACKAGE_WLROOTS
 	depends on !BR2_STATIC_LIBS # wayland
 	depends on BR2_TOOLCHAIN_HAS_THREADS # libdrm, wayland
 	depends on BR2_PACKAGE_HAS_UDEV # libinput
-	# Technically wlroots should work with any OpenGL implementation
-	# which provides EGL, GLES2, and libgbm; but in practice only
-	# Mesa ships an usable libgbm.
-	depends on BR2_PACKAGE_MESA3D_OPENGL_EGL
-	depends on BR2_PACKAGE_MESA3D_OPENGL_ES
+	depends on BR2_PACKAGE_HAS_LIBEGL
+	depends on BR2_PACKAGE_HAS_LIBEGL_WAYLAND
+	depends on BR2_PACKAGE_HAS_LIBGLES
 	select BR2_PACKAGE_LIBDRM
 	select BR2_PACKAGE_LIBINPUT
 	select BR2_PACKAGE_LIBXKBCOMMON

package/wlroots/wlroots.mk

@@ -15,7 +15,8 @@ WLROOTS_DEPENDENCIES = \
 	host-wayland \
 	libinput \
 	libxkbcommon \
-	mesa3d \
+	libegl \
+	libgles \
 	pixman \
 	udev \
 	wayland \