package/mesa3d: add config option for DRI3 support

Add config option for DRI3 support and use it instead
of DRI3 enable/disable logic in *.mk file.

Move the libxshmfence dependency to the DRI3 option, cfr. the following
in meson.build:

    if with_dri3
      ...
      dep_xshmfence = dependency('xshmfence', version : '>= 1.1')
    endif

Also select DRI3 in the Vulkan Intel driver.

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
[Arnout: make it a blind option, move xshmfence select to dri3]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/mesa3d/Config.in

@@ -54,20 +54,24 @@ config BR2_PACKAGE_MESA3D_OPENCL
 	select BR2_PACKAGE_LIBCLC
 	select BR2_PACKAGE_HAS_LIBOPENCL
 
-# inform the .mk file of gallium, dri or vulkan driver selection
+# inform the .mk file of gallium, dri, dri3 or vulkan driver selection
+config BR2_PACKAGE_MESA3D_DRI3
+	bool
+	select BR2_PACKAGE_XLIB_LIBXSHMFENCE
+
 config BR2_PACKAGE_MESA3D_GALLIUM_DRIVER
 	bool
 	select BR2_PACKAGE_MESA3D_DRIVER
 
 config BR2_PACKAGE_MESA3D_DRI_DRIVER
 	bool
+	select BR2_PACKAGE_MESA3D_DRI3 if \
+		(BR2_PACKAGE_XORG7 && BR2_TOOLCHAIN_HAS_SYNC_4 && \
+			!BR2_RISCV_32)
 	select BR2_PACKAGE_MESA3D_DRIVER
 	select BR2_PACKAGE_MESA3D_GBM if \
 		!BR2_PACKAGE_MESA3D_OPENGL_GLX && \
 		!BR2_PACKAGE_MESA3D_OPENGL_EGL
-	select BR2_PACKAGE_XLIB_LIBXSHMFENCE if \
-		(BR2_PACKAGE_XORG7 && BR2_TOOLCHAIN_HAS_SYNC_4 && \
-			!BR2_RISCV_32)
 
 config BR2_PACKAGE_MESA3D_VULKAN_DRIVER
 	bool
@@ -367,9 +371,9 @@ config BR2_PACKAGE_MESA3D_VULKAN_DRIVER_INTEL
 	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17 # memfd.h
 	depends on BR2_TOOLCHAIN_USES_GLIBC # ifunc, static_assert
 	depends on BR2_PACKAGE_XORG7 # xorgproto
+	select BR2_PACKAGE_MESA3D_DRI3
 	select BR2_PACKAGE_MESA3D_VULKAN_DRIVER
 	select BR2_PACKAGE_XORGPROTO
-	select BR2_PACKAGE_XLIB_LIBXSHMFENCE
 	help
 	  Vulkan driver for Intel hardware from Ivy Bridge onward.
 

package/mesa3d/mesa3d.mk

@@ -35,6 +35,15 @@ ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM),y)
 MESA3D_CONF_OPTS += -Db_asneeded=false
 endif
 
+ifeq ($(BR2_PACKAGE_MESA3D_DRI3),y)
+MESA3D_CONF_OPTS += -Ddri3=enabled
+ifeq ($(BR2_PACKAGE_XLIB_LIBXSHMFENCE),y)
+MESA3D_DEPENDENCIES += xlib_libxshmfence
+endif
+else
+MESA3D_CONF_OPTS += -Ddri3=disabled
+endif
+
 ifeq ($(BR2_PACKAGE_MESA3D_LLVM),y)
 MESA3D_DEPENDENCIES += host-llvm llvm
 MESA3D_MESON_EXTRA_BINARIES += llvm-config='$(STAGING_DIR)/usr/bin/llvm-config'
@@ -123,14 +132,8 @@ endif
 
 ifeq ($(BR2_PACKAGE_MESA3D_DRI_DRIVER),)
 MESA3D_CONF_OPTS += \
-	-Ddri-drivers= -Ddri3=disabled
+	-Ddri-drivers=
 else
-ifeq ($(BR2_PACKAGE_XLIB_LIBXSHMFENCE),y)
-MESA3D_DEPENDENCIES += xlib_libxshmfence
-MESA3D_CONF_OPTS += -Ddri3=enabled
-else
-MESA3D_CONF_OPTS += -Ddri3=disabled
-endif
 MESA3D_CONF_OPTS += \
 	-Dshared-glapi=enabled \
 	-Dglx-direct=true \
@@ -143,7 +146,6 @@ MESA3D_CONF_OPTS += \
 else
 MESA3D_DEPENDENCIES += xlib_libxshmfence
 MESA3D_CONF_OPTS += \
-	-Ddri3=enabled \
 	-Dvulkan-drivers=$(subst $(space),$(comma),$(MESA3D_VULKAN_DRIVERS-y))
 endif