UML build failure in 2.6.27-rc3

UML build failure in 2.6.27-rc3

[Theodore Ts'o]

Is this a known problem?

  SYMLINK arch/um/include/kern_constants.h
  SYMLINK arch/um/include/sysdep
make[2]: `arch/um/sys-i386/user-offsets.s' is up to date.
  CHK     arch/um/include/user_constants.h
  Using /usr/projects/linux/ext4 as source for kernel
  GEN     /usr/projects/linux/uml/Makefile
  CHK     include/linux/version.h
  CHK     include/linux/utsrelease.h
  CALL    /usr/projects/linux/ext4/scripts/checksyscalls.sh
  CHK     include/linux/compile.h
  CC      arch/um/kernel/ptrace.o
/usr/projects/linux/ext4/arch/um/kernel/ptrace.c:230: error: static declaration of ‘send_sigtrap’ follows non-static declaration
include2/asm/ptrace-generic.h:51: error: previous declaration of ‘send_sigtrap’ was here
make[2]: *** [arch/um/kernel/ptrace.o] Error 1
make[1]: *** [arch/um/kernel] Error 2
make: *** [sub-make] Error 2

Re: UML build failure in 2.6.27-rc3

[Geert Uytterhoeven]

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On Thu, 21 Aug 2008, Theodore Ts'o wrote:
> Is this a known problem?
> 
>   SYMLINK arch/um/include/kern_constants.h
>   SYMLINK arch/um/include/sysdep
> make[2]: `arch/um/sys-i386/user-offsets.s' is up to date.
>   CHK     arch/um/include/user_constants.h
>   Using /usr/projects/linux/ext4 as source for kernel
>   GEN     /usr/projects/linux/uml/Makefile
>   CHK     include/linux/version.h
>   CHK     include/linux/utsrelease.h
>   CALL    /usr/projects/linux/ext4/scripts/checksyscalls.sh
>   CHK     include/linux/compile.h
>   CC      arch/um/kernel/ptrace.o
> /usr/projects/linux/ext4/arch/um/kernel/ptrace.c:230: error: static declaration of ‘send_sigtrap’ follows non-static declaration
> include2/asm/ptrace-generic.h:51: error: previous declaration of ‘send_sigtrap’ was here
> make[2]: *** [arch/um/kernel/ptrace.o] Error 1
> make[1]: *** [arch/um/kernel] Error 2
> make: *** [sub-make] Error 2

At least I don't see it in 2.6.27-rc4, for both ia32 and amd64 UML builds.
I also had no build problems during the last few weeks.

Does you config differ a lot from the defconfig?

With kind regards,

Geert Uytterhoeven
Software Architect

Sony Techsoft Centre Europe
The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium

Phone:    +32 (0)2 700 8453
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Re: UML build failure in 2.6.27-rc3

[Jeff Dike]

On Thu, Aug 21, 2008 at 11:19:00AM -0400, Theodore Ts'o wrote:
> Is this a known problem?
> 
>   SYMLINK arch/um/include/kern_constants.h
>   SYMLINK arch/um/include/sysdep
> make[2]: `arch/um/sys-i386/user-offsets.s' is up to date.
>   CHK     arch/um/include/user_constants.h
>   Using /usr/projects/linux/ext4 as source for kernel
>   GEN     /usr/projects/linux/uml/Makefile
>   CHK     include/linux/version.h
>   CHK     include/linux/utsrelease.h
>   CALL    /usr/projects/linux/ext4/scripts/checksyscalls.sh
>   CHK     include/linux/compile.h
>   CC      arch/um/kernel/ptrace.o
> /usr/projects/linux/ext4/arch/um/kernel/ptrace.c:230: error: static declaration of ‘send_sigtrap’ follows non-static declaration
> include2/asm/ptrace-generic.h:51: error: previous declaration of ‘send_sigtrap’ was here
> make[2]: *** [arch/um/kernel/ptrace.o] Error 1
> make[1]: *** [arch/um/kernel] Error 2
> make: *** [sub-make] Error 2

Are you sure you have a consistent tree?  I see no declaration of
send_sigtrap in ptrace-generic.h.  There is one in asm-x86/ptrace.h
but it's not at line 51.

			Jeff

-- 
Work email - jdike at linux dot intel dot com

Re: UML build failure in 2.6.27-rc3

[Theodore Tso]

On Mon, Aug 25, 2008 at 06:04:06PM -0400, Jeff Dike wrote:
> Are you sure you have a consistent tree?  I see no declaration of
> send_sigtrap in ptrace-generic.h.  There is one in asm-x86/ptrace.h
> but it's not at line 51.

Now I see what happened.  I did have a consistent tree, but I was
doing a build via "make ARCH=um O=/usr/projects/linux/uml" --- and I
had previously built a UML tree from another source tree without doing
a "make mrproper", so /usr/projects/linux/uml/include2/asm was a
symlink to another kernel tree's include/asm directory.

It might be nice if kbuild caught the inconsistency, but this was my
bad.

							- Ted