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