[Kernel Build] Initrd not getting build out of source dir

Hi Greg,

On Sun, Sep 4, 2016 at 1:36 AM, Greg KH [off-list ref] wrote:

On Sat, Sep 03, 2016 at 05:07:20PM -0700, Vipul Jain wrote:

quoted

Hi Kernel Alias,

I downloaded latest kernel source from kernel.org and tried to build it
at a directory outside source by giving O=<path option> but I noticed

that

quoted

initrd image is not getting build but if I execute make inside source
things are fine.

[Build Kernel/Modules etc inside source]
~/linux-stable/> make
~/linux-stable/> make install
~/linux-stable/> make install_modules
~/linux-stable/> su -c "reboot -f"

everything works out fine and system gives me selection to boot from
newly build kernel and system boots up without issues. But if I build as
below I see system OOPS because no file system found for mount. Would
like to know why?

[Build outside]
~/linux-stable/> make O=~/linux-build/
~/linux-stable/> cd ../linux-build/

Don't do that.

quoted

~/linux-stable/> make install

make O=~/linux-build install

[Vipul] Getting below message wondering why? Did I missing anything? I did
execute make -j4 O=/home/playground/linux/build before executing below.

linux-tssh:/home/vjain/playground/linux/linus-stable # make
O=/home/vjain/playground/linux/build install
     make[1]: Entering directory '/home/vjain/playground/linux/build'
     sh /home/vjain/playground/linux/linus-stable/arch/x86/boot/install.sh
4.8.0-rc5-42-desktop arch/x86/boot/bzImage \
        System.map "/boot"
   *  You may need to create an initial ramdisk now.*
      make[1]: Leaving directory '/home/vjain/playground/linux/build'

quoted

~/linux-stable/> make install_modules

make O=~/linux-build install_modules

hope this helps,

greg k-h

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