From: Meelis Roos <mroos@linux.ee>
To: Zhenzhong Duan <zhenzhong.duan@oracle.com>,
Thomas Gleixner <tglx@linutronix.de>,
David Woodhouse <dwmw@amazon.co.uk>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Compiling with old gcc breaks when CONFIG_RETPOLINE is off
Date: Tue, 4 Dec 2018 11:58:00 +0200 [thread overview]
Message-ID: <6eeee8da-82ac-f527-9278-7ebcc8756ea1@linux.ee> (raw)
Just tried 4.20-rc5 on an old K6-2 PC with gcc 5.3.1, got an error about non-retpoline compiler,
turned CONFIG_RETPOLINE off and retried.
To my surprise, compilation still breaks with
arch/x86/Makefile:224: *** You are building kernel with non-retpoline compiler, please update your compiler.. Stop.
As I read the Makefile, it should error only when CONFIG_RETPOLINE is enabled, but it still breaks.
$ grep -r CONFIG_RETPOLINE .config
# CONFIG_RETPOLINE is not set
$ grep -r CONFIG_RETPOLINE include/
include/generated/autoconf.h:#define CONFIG_RETPOLINE 1
include/config/auto.conf:CONFIG_RETPOLINE=y
So the headers have not been updated yet, maybe?
--
Meelis Roos <mroos@linux.ee>
next reply other threads:[~2018-12-04 9:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-04 9:58 Meelis Roos [this message]
2018-12-04 13:57 ` Zhenzhong Duan
2018-12-05 1:30 ` Zhenzhong Duan
2018-12-05 3:00 ` Masahiro Yamada
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