Messages in this thread | | | Date | Thu, 22 Feb 2001 15:09:46 -0800 | From | Mike Castle <> | Subject | Re: [PATCH] use correct include dir for build tools |
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On Thu, Feb 22, 2001 at 02:40:55PM -0800, Robert Read wrote: > Ok, my bad, I forgot about cross-compiles. The problem was > scripts/split-include.c includes errno.h, which requires linux/errno.h > to exist, and I thought it would be better to use the current kernel's > version, rather than the system version. I guess not.
Oh no. Definitely not.
Linus went on a tirade not too long ago about that. You can search the kernel archives for the details and long heated threads. But it comes down to this:
For user space compiling, the kernel include files should be those that libc was built against.
For kernel space compiling, the kernel include files should be those that the components will link against (static or modules).
So, theoretically, a package that has both components should take care to do the proper includes. But that's it.
(libc does usually take care to be able to build against a later kernel version than you're running on, and determine at run time what features may or may not be there, so one could have a 2.4.2 kernel handy to build libc against while still running a 2.2.18 kernel. Theoretically.)
mrc -- Mike Castle Life is like a clock: You can work constantly dalgoda@ix.netcom.com and be right all the time, or not work at all www.netcom.com/~dalgoda/ and be right at least twice a day. -- mrc We are all of us living in the shadow of Manhattan. -- Watchmen - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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