Previously, u-boot was almost always built with GCC because the
kernel-arch inherit set TOOLCHAIN to KERNEL_TOOLCHAIN, which defaulted
to 'gcc'.
However, since kernel-arch inherit was removed, u-boot in theory now
respects the default toolchain. In practise, the recipe hard-codes CC
to be gcc, and there are known caveats building u-boot with clang[2].
In the long term we should be able to make this recipe respect TOOLCHAIN,
as the upstream u-boot CI does build and test with clang, but for now
fix the build by restoring the explicit use of gcc.
[1] oe-core 8fb5470841b ("u-boot: Separate out from kernel-arch.bbclass")
[2] https://docs.u-boot-project.org/en/latest/build/clang.html
Signed-off-by: Ross Burton <[email protected]>
---
meta/recipes-bsp/u-boot/u-boot.inc | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/meta/recipes-bsp/u-boot/u-boot.inc
b/meta/recipes-bsp/u-boot/u-boot.inc
index 3e2f5aa1a5f..00a12f1bb91 100644
--- a/meta/recipes-bsp/u-boot/u-boot.inc
+++ b/meta/recipes-bsp/u-boot/u-boot.inc
@@ -3,6 +3,10 @@ PROVIDES = "virtual/bootloader"
PACKAGE_ARCH = "${MACHINE_ARCH}"
+# u-boot is best built with gcc
+# https://docs.u-boot-project.org/en/latest/build/clang.html
+TOOLCHAIN = "gcc"
+
DEPENDS += "${@bb.utils.contains('UBOOT_ENV_SUFFIX', 'scr',
'u-boot-mkimage-native', '', d)}"
DEPENDS += "${@ 'u-boot-mkenvimage-native' if
bb.utils.to_boolean(d.getVar('UBOOT_INITIAL_ENV_BINARY')) else ''}"
--
2.43.0
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