From: Xiao Yang <yangx.jy@cn.fujitsu.com>
To: linux-um@lists.infradead.org
Subject: Fwd: How to avoid a lot of './arch/um/include/uapi: No such file or directory' warnings
Date: Tue, 2 Jun 2020 17:28:10 +0800 [thread overview]
Message-ID: <5ED61BAA.5080203@cn.fujitsu.com> (raw)
Cc: linux-um@lists.infradead.org
Hi,
I got a lot of './arch/um/include/uapi: No such file or directory'
warnings when building kernel with um arch:
-------------------------------------------
root@ubuntu18:~/linux-next# make W=1 ARCH=um allmodconfig
...
root@ubuntu18:~/linux-next# make W=1 ARCH=um prepare
...
UPD include/generated/asm-offsets.h
CALL scripts/checksyscalls.sh
cc1: warning: ./arch/um/include/uapi: No such file or directory
[-Wmissing-include-dirs]
CALL scripts/atomic/check-atomics.sh
...
root@ubuntu18:~/linux-next# make W=1 ARCH=um modules_prepare
...
CC scripts/mod/empty.o
cc1: warning: ./arch/um/include/uapi: No such file or directory
[-Wmissing-include-dirs]
MKELF scripts/mod/elfconfig.h
HOSTCC scripts/mod/modpost.o
CC scripts/mod/devicetable-offsets.s
cc1: warning: ./arch/um/include/uapi: No such file or directory
[-Wmissing-include-dirs]
HOSTCC scripts/mod/file2alias.o
HOSTCC scripts/mod/sumversion.o
HOSTLD scripts/mod/modpost
CC kernel/bounds.s
cc1: warning: ./arch/um/include/uapi: No such file or directory
[-Wmissing-include-dirs]
CC arch/um/kernel/asm-offsets.s
cc1: warning: ./arch/um/include/uapi: No such file or directory
[-Wmissing-include-dirs]
In file included from ./include/linux/uaccess.h:11:0,
from ./include/linux/crypto.h:21,
from ./arch/x86/um/shared/sysdep/kernel-offsets.h:5,
from arch/um/kernel/asm-offsets.c:1:
./arch/um/include/asm/uaccess.h: In function ‘__access_ok’:
./arch/um/include/asm/uaccess.h:17:29: warning: comparison of unsigned
expression >= 0 is always true [-Wtype-limits]
(((unsigned long) (addr) >= FIXADDR_USER_START) && \
^
./arch/um/include/asm/uaccess.h:45:3: note: in expansion of macro
‘__access_ok_vsyscall’
__access_ok_vsyscall(addr, size) ||
^~~~~~~~~~~~~~~~~~~~
In file included from arch/um/kernel/asm-offsets.c:1:0:
./arch/x86/um/shared/sysdep/kernel-offsets.h: At top level:
./arch/x86/um/shared/sysdep/kernel-offsets.h:9:6: warning: no previous
prototype for ‘foo’ [-Wmissing-prototypes]
void foo(void)
^~~
CALL scripts/checksyscalls.sh
cc1: warning: ./arch/um/include/uapi: No such file or directory
[-Wmissing-include-dirs]
...
root@ubuntu18:~/linux-next# make W=1 ARCH=um
...
-------------------------------------------
Is there any way to avoid the same warnings? Sorry, I am not familiar
with the kbuild of um arch.
Best Regards,
Xiao Yang
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reply other threads:[~2020-06-02 9:28 UTC|newest]
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