RE: [next] kbuild: use $(srctree) instead of KBUILD_SRC to check out-of-tree build

[yamada.masahiro]

Hi Sergey,

> -----Original Message-----
> From: Sergey Senozhatsky [mailto:sergey.senozhatsky.w...@gmail.com]
> Sent: Friday, April 19, 2019 5:34 PM
> To: Yamada, Masahiro/山田 真弘 <yamada.masah...@socionext.com>
> Cc: linux-kernel@vger.kernel.org; Sergey Senozhatsky
> <sergey.senozhat...@gmail.com>
> Subject: [next] kbuild: use $(srctree) instead of KBUILD_SRC to check
> out-of-tree build
> 
> Hello Masahiro,
> 
> It seems that commit a9a49c2ad9b9b8 (linux-next) breaks ./scripts/tags.sh
> on my system. It scans, basically, my entire drive now (including the
> root partition):
> 
> $ ./scripts/tags.sh tags


I did not know this script is run directly
because I expected people were using 'make tags'.

It is easy to fix, though.


diff --git a/scripts/tags.sh b/scripts/tags.sh
index 6a551805db52..70e14c67bde7 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -19,7 +19,7 @@ ignore="$ignore ( -name *.mod.c ) -prune -o"
 # Do not use full path if we do not use O=.. builds
 # Use make O=. {tags|cscope}
 # to force full paths for a non-O= build
-if [ "${srctree}" = "." ]; then
+if [ "${srctree}" = "." -o -z "${srctree}" ]; then
        tree=
 else
        tree=${srctree}/



> find: ‘/arch/*.[chS]/’: No such file or directory
> find: ‘/include’: No such file or directory
> find: ‘/boot/lost+found’: Permission denied
> find: ‘/etc/pacman.d/gnupg/openpgp-revocs.d’: Permission denied
> find: ‘/etc/pacman.d/gnupg/private-keys-v1.d’: Permission denied
> find: ‘/etc/pacman.d/gnupg/crls.d’: Permission denied
> find: ‘/etc/polkit-1/rules.d’: Permission denied
> find: ‘/etc/sudoers.d’: Permission denied
> find: ‘/etc/audisp/plugins.d’: Permission denied
> find: ‘/home/lost+found’: Permission denied
> find: ‘/home/sk’: Permission denied
> find: ‘/lost+found’: Permission denied
> ctags: Warning: --extra option is obsolete; use --extras instead
> [..]
> 
> 
> With reverted a9a49c2ad9b9b8 tags scans kernel source tree only
> 
> ./scripts/tags.sh tags
> find: ‘arch/*.[chS]/’: No such file or directory
> ctags: Warning: --extra option is obsolete; use --extras instead
> [..]
> 
>       -ss