Hello,
On Wed, Aug 23, 2023 at 07:06:32PM +0200, Michal Koutný wrote:
> When kbuild on usr-merged distro like:
>
> make INSTALL_MOD_PATH="$BUILD_DIR_C/mods" \
> MODLIB="$BUILD_DIR_C/mods/usr/lib/modules/$release" \
> modules_install
>
> (notice the '/usr' insert)
>
> where
> release=$(make -s kernelrelease)
>
> depmod fails:
>
> > DEPMOD /var/tmp/build/mods/usr/lib/modules/6.5.0-rc5-default
> > ln: failed to create symbolic link '/var/tmp/build/mods/lib/modules/99.98.6.5.0-rc5-default': No such file or directory
> > depmod: ERROR: could not open directory /var/tmp/build/mods/usr/lib/modules/99.98.6.5.0-rc5-default: No such file or directory
> > depmod: FATAL: could not search modules: No such file or directory
>
> I used kmod-30-8.1.x86_64 (openSUSE Tumbleweed with usr-merge).
>
> The explicit MODLIB doesn't cut it because of another path dependency in
> depmod's hack. That provision was added in commit bfe5424a8b31 ("kbuild:
> Hack for depmod not handling X.Y versions") (2011, v3.0).
> It says the hack is needed for module-init-tools < 3.13, 3.13 is from
> 2011 too. Actually, it seems to be a cautious action between 2.6.xx
> series and an expected 3.0 but it ended up as 3.0.0 and SUBLEVEL=0
> has been since then (so even the busybox's depmod should work without
> the hack).
>
> Remove the hack to make builds with custom INSTALL_MOD_PATH on
> usr-merged distros possible.
As far as I can tell this is already merged as
4d15c9fa058e6dee09324cfc93f48858d4296019 in
https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git
Thanks
Michal
>
> Link: https://lore.kernel.org/r/CAK7LNAT6mQ0EpwmKUCBhv9Acaf_qyGq4hu%3DXvSWRuZ-pNAFWVw@xxxxxxxxxxxxxx/
> Signed-off-by: Michal Koutný <mkoutny@xxxxxxxx>
> ---
> scripts/depmod.sh | 18 ------------------
> 1 file changed, 18 deletions(-)
>
> diff --git a/scripts/depmod.sh b/scripts/depmod.sh
> index 3643b4f896ed..84311255e4bf 100755
> --- a/scripts/depmod.sh
> +++ b/scripts/depmod.sh
> @@ -23,24 +23,6 @@ if [ -z $(command -v $DEPMOD) ]; then
> exit 0
> fi
>
> -# older versions of depmod require the version string to start with three
> -# numbers, so we cheat with a symlink here
> -depmod_hack_needed=true
> -tmp_dir=$(mktemp -d ${TMPDIR:-/tmp}/depmod.XXXXXX)
> -mkdir -p "$tmp_dir/lib/modules/$KERNELRELEASE"
> -if "$DEPMOD" -b "$tmp_dir" $KERNELRELEASE 2>/dev/null; then
> - if test -e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep" -o \
> - -e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep.bin"; then
> - depmod_hack_needed=false
> - fi
> -fi
> -rm -rf "$tmp_dir"
> -if $depmod_hack_needed; then
> - symlink="$INSTALL_MOD_PATH/lib/modules/99.98.$KERNELRELEASE"
> - ln -s "$KERNELRELEASE" "$symlink"
> - KERNELRELEASE=99.98.$KERNELRELEASE
> -fi
> -
> set -- -ae -F System.map
> if test -n "$INSTALL_MOD_PATH"; then
> set -- "$@" -b "$INSTALL_MOD_PATH"
> --
> 2.41.0
>
