linux-kernel - [PATCH] kbuild: Use uname for LINUX_COMPILE

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Message-ID: <20201020093459.GA48796@chrisdown.name>
Date:   Tue, 20 Oct 2020 10:34:59 +0100
From:   Chris Down <chris@...isdown.name>
To:     linux-kbuild@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Michal Marek <michal.lkml@...kovi.net>,
        Masahiro Yamada <masahiroy@...nel.org>
Subject: [PATCH] kbuild: Use uname for LINUX_COMPILE_HOST detection

`hostname` may not be present on some systems as it's not mandated by
POSIX/SUSv4. This isn't just a theoretical problem: on Arch Linux,
`hostname` is provided by `inetutils`, which isn't part of the base
distribution.

    ./scripts/mkcompile_h: line 38: hostname: command not found

Use `uname -n` instead, which is more likely to be available (and
mandated by standards).

Signed-off-by: Chris Down <chris@...isdown.name>
Cc: Masahiro Yamada <masahiroy@...nel.org>
Cc: Michal Marek <michal.lkml@...kovi.net>
Cc: linux-kbuild@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
 scripts/mkcompile_h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index baf3ab8d9d49..4ae735039daf 100755
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -35,7 +35,7 @@ else
 	LINUX_COMPILE_BY=$KBUILD_BUILD_USER
 fi
 if test -z "$KBUILD_BUILD_HOST"; then
-	LINUX_COMPILE_HOST=`hostname`
+	LINUX_COMPILE_HOST=`uname -n`
 else
 	LINUX_COMPILE_HOST=$KBUILD_BUILD_HOST
 fi
-- 
2.28.0