On Tue, Oct 8, 2024 at 1:07 AM Zach Wade <zachwade.k@xxxxxxxxx> wrote:
>
> When testing multiple versions of the kernel with the same source code,it
> is often necessary to recompile the kernel, which is time-consuming for
> small hosts. I need to cp vmlinux to the corresponding module directory.
> I think adding this will make debugging the kernel a little more
> convenient.
>
> Signed-off-by: Zach Wade <zachwade.k@xxxxxxxxx>
> ---
> Makefile | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/Makefile b/Makefile
> index c5493c0c0ca1..1caab011599f 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1579,6 +1579,7 @@ help:
> @echo '* vmlinux - Build the bare kernel'
> @echo '* modules - Build all modules'
> @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
> + @echo ' vmlinux_install - Install vmlinux to INSTALL_MOD_PATH (default: /)'
> @echo ' vdso_install - Install unstripped vdso to INSTALL_MOD_PATH (default: /)'
> @echo ' dir/ - Build all files in dir and below'
> @echo ' dir/file.[ois] - Build specified target only'
> @@ -1887,6 +1888,19 @@ modpost: $(if $(single-build),, $(if $(KBUILD_BUILTIN), vmlinux.o)) \
> $(if $(KBUILD_MODULES), modules_check)
> $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
>
> +# ---------------------------------------------------------------------------
> +# vmlinux install
> +
> +PHONY += vmlinux_install
> +
> +vmlinux_install:
> + @if [ -f vmlinux ]; then \
> + echo "INSTALL ${MODLIB}/vmlinux"; \
> + cp -f vmlinux ${MODLIB}/ ; \
> + else \
> + echo "vmlinux file does not exist."; \
> + fi
> +
This is a very niche use-case.
What if someone else wants to copy vmlinux to /boot/
instead of ${MODLIB}/ ?
People tend to have local scripts to meet personal demands.
The upstream is not a place for that.
> # Single targets
> # ---------------------------------------------------------------------------
> # To build individual files in subdirectories, you can do like this:
> --
> 2.46.0
>
>
--
Best Regards
Masahiro Yamada
