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Date: Mon, 28 Jul 2008 22:05:00 +0200 From: Sam Ravnborg <sam@...nborg.org> To: linux arch <linux-arch@...r.kernel.org> Cc: LKML <linux-kernel@...r.kernel.org> Subject: kbuild now support arch/$ARCH/include - time for ARCHs to convert The traditional location of the arch specific Makefiles has been at: include/asm-$ARCH But as suggested by several people over time and lately by Linus in the following post: http://kerneltrap.org/mailarchive/linux-kernel/2008/5/21/1903924 is is suggested to move the arch specific files under arch/ and for the header files this is arch/$ARCH/include. So I have hacked up support for this in kbuild so for the simpler cases a simple move of header files as in: git mv include/asm-$ARCH arch/$ARCH/include/asm is enough. If Linus will accept it then I think -rc1 is a perfect time to do it as people has less stuff pending touching the header files that are moved. Validation is easy - does the usual configs build? For the archs that plays games with symlinks this is a splendid opportunity to get rid af these. The receipe is simple: Use KBUILD_CFLAGS += -Iarch/$ARCH/include/$CPU to select the CPU and then do a copy of the header files like this: git mv include/asm-$ARCH/$CPU arch/$ARCH/include/$CPU/cpu Then the code can continue to use: #include <cpu/foo.h> I already converted sparc to use arch/sparc/include - while I merged the header files for sparc and sparc64. This change is already upstream. And for SH I posted a receipe which you can read here: http://lkml.org/lkml/2008/7/28/83 It is SH specific but anyway pretty generic. I am limited in time and resources at the moment but I would be glad to help out as time permits should there be any questions. Sam -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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