Thanks Ralph for informative reply . Will check once again after deleting the file you suggested .
Ashish On Mon, May 13, 2019, 7:05 PM Ralph Siemsen <ralph.siem...@linaro.org> wrote: > Hi Ashish, > > On Mon, May 13, 2019 at 5:57 AM AshishKumar Mishra < > ashish.emailaddr...@gmail.com> wrote: > >> So , time shown by "uname -a" is retains older value even though >> i had compiled the linux multiple times . >> > > This is normal behaviour, even when building the kernel directly (eg. not > using Yocto). It is a bit surprising at first, but it all comes down to > dependencies in the Makefile for the kernel. > > The version string displayed by "uname -a" comes from init/version.c in > the kernel source tree. Specifically the symbol UTS_VERSION, which is > defined in include/generated/compile.h. This file is produced when you > first build, and remains thereafter, unless you do "make clean" or > equivalent. > > Currently , only way i am able to bypass this behavior is to do bitbake -c >> cleanall linux-yocto >> before every compilation. >> > > You can delete the include/generated/compile.h file in your kernel build > directory. Upon rebuild of kernel, the file will be re-created with the > current date/time. > > Regards > Ralph >
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