Re: [PATCH] Kbuild: allow code re-use across different directories

[Michal Marek]

On Wed, Sep 14, 2011 at 12:24:14AM -0400, Arnaud Lacombe wrote:
> Modify Kbuild to allow direct code re-use in multiple directory
> without having to go through a copy. Technically, Kbuild would use by
> default the VPATH feature

I now found that the patch breaks headers_install and firmware_install
when using O=

$ mkdir build
$ make O=build defconfig
...
$ make O=build headers_install
  CHK     include/linux/version.h
  UPD     include/linux/version.h
  HOSTCC  scripts/unifdef
make[3]: *** No rule to make target `scripts/headers_install.pl', needed by `/labs/mmarek/linux-2.6/build/usr/include/asm-generic/.install'.  Stop.
make[2]: *** [asm-generic] Error 2
make[1]: *** [headers_install] Error 2
make: *** [sub-make] Error 2
$ make O=build firmware_install
  GEN     /labs/mmarek/linux-2.6/build/Makefile
scripts/kconfig/conf --silentoldconfig Kconfig
make[2]: *** No rule to make target `firmware/e100/d101m_ucode.bin', needed by `/lib/firmware/e100/d101m_ucode.bin'.  Stop.
make[1]: *** [firmware_install] Error 2
make: *** [sub-make] Error 2

Michal
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