Since commit '315bab4e972d kbuild: fix endless syncconfig in case arch
Makefile sets CROSS_COMPILE',
arch/$(SRCARCH)/Makefile is moved ahead of include/config/%.conf
synchonization in root Makefile.
So all the CONFIG_* option used in arch/$(SRCARCH)/Makefile may have
stale value if they were just updated in .config.
This looks like an issue. I'm not familiar with kbuild. Ccing Yamada for
help.
Thanks
Zhenzhong
On 2018/12/4 17:58, Meelis Roos wrote:
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?
