Messages in this thread | | | Date | Wed, 10 Jan 2007 08:34:45 +0100 | From | Jean Delvare <> | Subject | Re: .version keeps being updated |
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Hi Luca,
On Tue, 9 Jan 2007 22:55:27 +0100, Luca Tettamanti wrote: > Jean Delvare <khali@linux-fr.org> ha scritto: > > Since 2.6.20-rc1 or so, running "make" always builds a new kernel with > > an incremented version number, whether there has actually been any > > change done to the code or configuration or not. This increases the > > build time quite a bit. > > > > I've tracked it down to include/linux/compile.h always being updated, > > and this is because .version is updated. I couldn't find what is > > causing .version to be updated each time though. Can anybody help > > there? Was this change made on purpose or is this a bug which we should > > fix? > > kronos:~/src/linux-2.6.git$ cat ../linux-build-git/include/linux/compile.h > /* This file is auto generated, version 14 */ > /* SMP PREEMPT */ > #define UTS_MACHINE "i386" > #define UTS_VERSION "#14 SMP PREEMPT Tue Jan 9 22:45:18 CET 2007" > #define LINUX_COMPILE_TIME "22:45:18" > #define LINUX_COMPILE_BY "kronos" > #define LINUX_COMPILE_HOST "dreamland.darkstar.lan" > #define LINUX_COMPILE_DOMAIN "darkstar.lan" > #define LINUX_COMPILER "gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-20)" > > LINUX_COMPILE_TIME and UTS_VERSION differs at each rebuild. UTS_VERSION > is responsible of rebuilding fs/proc/proc_misc.o; init/main.o uses just > about everything, init/version.o requires UTS_VERSION.
That's not quite true, LINUX_COMPILE_TIME and UTS_VERSION are explicitely excluded from the comparison when checking whether linux/compile.h changed. This is done in scripts/mkcompile_h, and I believe this part works properly. This script wasn't modified recently.
> I don't think it's a regression from earlier kernels though, is it?
It definitely is, which is why I am reporting it and am asking for it to be fixed. I isolated the two responsible commits elsewhere in the thread.
Thanks, -- Jean Delvare - 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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