linux-kernel - [PATCH] init/Kconfig: Specify the interpreter for rust-version.sh

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Date:   Thu,  6 Jan 2022 12:33:57 +0000
From:   SeongJae Park <sj@...nel.org>
To:     ojeda@...nel.org
Cc:     alex.gaynor@...il.com, wedsonaf@...gle.com,
        akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
        rust-for-linux@...r.kernel.org, SeongJae Park <sj@...nel.org>
Subject: [PATCH] init/Kconfig: Specify the interpreter for rust-version.sh

Some common tools like 'diff' don't support permissions of the files.
Due to that, 'rust-version.sh' in some trees including '-mm' result in
having no execution permission, and therefore build fails like below:

    $ make O=../linux.out/ olddefconfig
    make[1]: Entering directory 'linux.out'
      GEN     Makefile
    sh: 1: linux/scripts/rust-version.sh: Permission denied
    init/Kconfig:71: syntax error
    init/Kconfig:70: invalid statement
    linux/scripts/kconfig/Makefile:77: recipe for target 'olddefconfig' failed
    make[2]: *** [olddefconfig] Error 1
    linux/Makefile:666: recipe for target 'olddefconfig' failed
    make[1]: *** [olddefconfig] Error 2
    make[1]: Leaving directory 'linux.out'
    Makefile:226: recipe for target '__sub-make' failed
    make: *** [__sub-make] Error 2

It's not a big deal, but not so fun.  This commit fixes the issue by
specifying the interpreter for 'rust-version.sh' in the Kconfig file.

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 init/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/init/Kconfig b/init/Kconfig
index cd23faa163d1..97ab35692d46 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -67,7 +67,7 @@ config HAS_RUST
 config RUSTC_VERSION
 	depends on HAS_RUST
 	int
-	default $(shell,$(srctree)/scripts/rust-version.sh $(RUSTC))
+	default $(shell,/bin/sh $(srctree)/scripts/rust-version.sh $(RUSTC))
 
 config CC_CAN_LINK
 	bool
-- 
2.17.1