[Buildroot] [PATCH 3/6] package/mesa3d: crocus Gallium driver needs precomp-compiler

[Bernd Kuhls]

Buildroot commit 59ed1137e9bb8c0157be3dc91a1cc462211dd3c7 bumped the
package to 26.0.0 which added upstream commit
https://gitlab.freedesktop.org/mesa/mesa/-/commit/b72d347d1c3b9e829971fbdabf993b68776083c1
requiring the precomp-compiler for the crocus driver.

Add the necessary dependencies to fix a configure error:

../output-1/build/mesa3d-26.1.8/meson.build:945:3: ERROR:
 Feature llvm cannot be disabled: CLC requires LLVM

caused by
https://gitlab.freedesktop.org/mesa/mesa/-/blob/mesa-26.1.8/meson.build?ref_type=tags#L945

which checks the value in the variable with_clc.

When the precomp-compiler is not provided by host-mesa3d the meson
configure option mesa-clc does not contain 'system' causing
https://gitlab.freedesktop.org/mesa/mesa/-/blob/mesa-26.1.8/meson.build?ref_type=tags#L939
the variable with_clc to be filled, among others, with the content of with_driver_using_cl:
https://gitlab.freedesktop.org/mesa/mesa/-/blob/mesa-26.1.8/meson.build?ref_type=tags#L939

which contains 'true' when the crocus driver is enabled:
https://gitlab.freedesktop.org/mesa/mesa/-/blob/mesa-26.1.8/meson.build?ref_type=tags#L925

So we need to provide the precomp-compiler also for the crocus driver.

Fixes:
https://autobuild.buildroot.org/results/baa718e140264a9aa64c3a8f4114ca1b05f740e3/

Signed-off-by: Bernd Kuhls <bernd at kuhls.net>
---
 package/mesa3d/Config.in | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/package/mesa3d/Config.in b/package/mesa3d/Config.in
index feed6b68fe..e18d25eb8e 100644
--- a/package/mesa3d/Config.in
+++ b/package/mesa3d/Config.in
@@ -110,10 +110,18 @@ comment "Gallium drivers"
 config BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_CROCUS
 	bool "Gallium crocus driver"
 	depends on BR2_i386 || BR2_x86_64
+	depends on BR2_PACKAGE_LLVM_ARCH_SUPPORTS # host-llvm
+	depends on BR2_HOST_GCC_AT_LEAST_7 # host-llvm
 	select BR2_PACKAGE_MESA3D_GALLIUM_DRIVER
+	select BR2_PACKAGE_MESA3D_NEEDS_PRECOMP_COMPILER
+	select BR2_PACKAGE_MESA3D_RUSTICL_SUPPORTED_DRIVER
 	help
 	  Mesa driver for gen4-7 Intel GPUs.
 
+comment "crocus driver needs host gcc >= 7"
+	depends on BR2_PACKAGE_LLVM_ARCH_SUPPORTS
+	depends on !BR2_HOST_GCC_AT_LEAST_7
+
 config BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_ETNAVIV
 	bool "Gallium Etnaviv driver"
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4 || !BR2_PACKAGE_XORG7 # libxshmfence
-- 
2.47.3