Re: [PATCH 2/7] kbuild: Add P= command line flag to run checkpatch

From: Jim Davis
Date: Mon Nov 20 2017 - 14:48:42 EST

On Mon, Nov 20, 2017 at 9:18 AM, Masahiro Yamada
<yamada.masahiro@xxxxxxxxxxxxx> wrote:

> I am unhappy about adding a new interface
> for each checker.
> The default of CHECK is "sparse", but
> users can override it to use another checker.
> As Decumentation/dev-tools/coccinelle.rst says,
> if you want to use coccinelle as a checker,
> make C=1 CHECK="scripts/coccicheck"

I'd be nice if people could just specify CHECK and CHECKFLAGS to run
their favorite checker, but currently CHECKFLAGS seems hardwired for
running sparse. So something liike

make C=1 CHECK="scripts/" CHECKFLAGS="--quiet --file"

fails when checkpatch is passed lots of arguments like -D__linux__
-Dlinux -D__STDC__ . A little shell wrapper to grab the last argument
in that long list is a workaround, but perhaps CHECKFLAGS should be
made less sparse-specific?