Le 29/01/2026 à 11:55, Link Mauve a écrit :
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Hi,
I’m trying to build the kernel for the Nintendo Wii, using LLVM instead
of gcc, in order to bring Rust support to this architecture (and also
because my distribution doesn’t ship a cross-compiling gcc), but I get
this build issue near the end:
```
% make O=wii LLVM=1 ARCH=powerpc -j1
make[1]: Entering directory '/home/linkmauve/dev/linux/wii'
GEN Makefile
CALL ../scripts/checksyscalls.sh
DESCEND objtool
INSTALL libsubcmd_headers
WRAP arch/powerpc/boot/dtbImage.wii
objcopy: Unable to recognise the format of the input file `vmlinux'
make[3]: *** [../arch/powerpc/boot/Makefile:394:
arch/powerpc/boot/dtbImage.wii] Error 1
make[2]: *** [../arch/powerpc/Makefile:236: zImage] Error 2
make[1]: *** [/home/linkmauve/dev/linux/Makefile:248: __sub-make] Error 2
make[1]: Leaving directory '/home/linkmauve/dev/linux/wii'
make: *** [Makefile:248: __sub-make] Error 2
```
I believe it should use $(OBJCOPY) instead of objcopy, which is set to
llvm-objcopy, but couldn’t figure out where it is misconfigured.
Must be here I guess:
arch/powerpc/boot/wrapper:${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
arch/powerpc/boot/wrapper: ${CROSS}objcopy $4 $1 \
arch/powerpc/boot/wrapper: ${CROSS}objcopy -O binary "$ofile".elf
"$ofile"
arch/powerpc/boot/wrapper: ${CROSS}objcopy -O aixcoff-rs6000
--set-start "$entry" "$ofile"
arch/powerpc/boot/wrapper: ${CROSS}objcopy -O binary "$ofile"
"$ofile.bin"
