Re: [PATCH v2 3/3] selftests/nolibc: fix up O= option support

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On Sat, Aug 05, 2023 at 02:13:11PM +0800, Zhangjin Wu wrote:
> To avoid pollute the source code tree and avoid mrproper for every
> architecture switch, the O= argument must be supported.
> 
> Both IMAGE and .config are from the building directory, let's use
> objtree instead of srctree for them.
> 
> If no O= option specified, means building kernel in source code tree,
> objtree should be srctree in such case.
> 
> To support relative path, as suggested by Thomas, $(COMMAND_O) is used
> to pass the O=$(ABSOLUTE_O) to the $(MAKE) commands.

Zhangjin, I cannot get this one to work, regardless of what I try:

   $ make -j8 O=$PWD/output-i386 nolibc-test XARCH=i386 CROSS_COMPILE=/f/tc/nolibc/gcc-12.3.0-nolibc/i386-linux/bin/i386-linux- CC=/f/tc/nolibc/gcc-12.3.0-nolibc/i386-linux/bin/i386-linux-gcc
   (...)
   CC      nolibc-test
   In file included from sysroot/i386/include/stdio.h:14,
                    from nolibc-test.c:13:
   sysroot/i386/include/errno.h:10:10: fatal error: asm/errno.h: No such file or directory
      10 | #include <asm/errno.h>
         |          ^~~~~~~~~~~~~
   compilation terminated.

I'll leave it aside for now as I've spent way longer than I hoped on
these series. I could take the previous two patches however.

Thanks,
Willy



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