compilation problem with kernel 2.6.15

compilation problem with kernel 2.6.15

[Krishna]

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While trying to cross compile kernel 2.6.15 for BCM1480 
  Ii got the following error:
   
    CC      arch/mips/kernel/signal.o
  CC      arch/mips/kernel/syscall.o
  CC      arch/mips/kernel/time.o
  CC      arch/mips/kernel/traps.o
  CC      arch/mips/kernel/unaligned.o
  CC      arch/mips/kernel/mips_ksyms.o
  CC      arch/mips/kernel/module.o
  AS      arch/mips/kernel/r4k_fpu.o
  AS      arch/mips/kernel/r4k_switch.o
  CC      arch/mips/kernel/smp.o
  CC      arch/mips/kernel/smp_mt.o
/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/arch/mips/kernel/smp_mt.c: In fu
nction `prom_prepare_cpus':
/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/arch/mips/kernel/smp_mt.c:276: e
rror: `IRQ_PER_CPU' undeclared (first use in this function)
/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/arch/mips/kernel/smp_mt.c:276: e
rror: (Each undeclared identifier is reported only once
/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/arch/mips/kernel/smp_mt.c:276: e
rror: for each function it appears in.)
make[2]: *** [arch/mips/kernel/smp_mt.o] Error 1
make[1]: *** [arch/mips/kernel] Error 2
make: *** [_all] Error 2
  
Please anyone help me to solve this problem.
   
  Krishna

			
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Re: compilation problem with kernel 2.6.15

[Ralf Baechle]

On Thu, Mar 30, 2006 at 01:13:13AM -0800, Krishna wrote:

Disable CONFIG_MIPS_MT.

  Ralf

compilation problem with kernel 2.6.15

[Krishna]

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I tried to cross compile kernel 2.6.15 for BCM1480. Please tell me what the following error indicates:
   
    Using /home/ssf/bdcom/linux-mips-kernels/linux-2.6.15 as source for kernel
  GEN    /home/ssf/bdcom/linux-mips-kernels/linux-mips-kernel-2.6.15/Makefile
  CHK     include/linux/version.h
  UPD     include/linux/version.h
  SYMLINK include/asm -> include/asm-mips
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/basic/split-include
  HOSTCC  scripts/basic/docproc
  GEN    /home/ssf/bdcom/linux-mips-kernels/linux-mips-kernel-2.6.15/Makefile
  HOSTCC  scripts/kconfig/conf.o
  HOSTCC  scripts/kconfig/kxgettext.o
  HOSTCC  scripts/kconfig/mconf.o
  SHIPPED scripts/kconfig/zconf.tab.c
  SHIPPED scripts/kconfig/lex.zconf.c
  SHIPPED scripts/kconfig/zconf.hash.c
  HOSTCC  scripts/kconfig/zconf.tab.o
  HOSTLD  scripts/kconfig/conf
scripts/kconfig/conf -s arch/mips/Kconfig
#
# using defaults found in .config
#
  SPLIT   include/linux/autoconf.h -> include/config/*
  CC      arch/mips/kernel/asm-offsets.s
  GEN     include/asm-mips/asm-offsets.h
  HOSTCC  scripts/genksyms/genksyms.o
  SHIPPED scripts/genksyms/lex.c
  SHIPPED scripts/genksyms/parse.h
  SHIPPED scripts/genksyms/keywords.c
  HOSTCC  scripts/genksyms/lex.o
  SHIPPED scripts/genksyms/parse.c
  HOSTCC  scripts/genksyms/parse.o
  HOSTLD  scripts/genksyms/genksyms
  CC      scripts/mod/empty.o
  HOSTCC  scripts/mod/mk_elfconfig
  MKELF   scripts/mod/elfconfig.h
  HOSTCC  scripts/mod/file2alias.o
  HOSTCC  scripts/mod/modpost.o
  HOSTCC  scripts/mod/sumversion.o
  HOSTLD  scripts/mod/modpost
  HOSTCC  scripts/kallsyms
  HOSTCC  scripts/pnmtologo
  HOSTCC  scripts/conmakehash
  HOSTCC  scripts/bin2c
  CC      init/main.o
  CHK     include/linux/compile.h
  UPD     include/linux/compile.h
  CC      init/version.o
  CC      init/do_mounts.o
In file included from /home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/include/li
nux/nfs_fs.h:15,
                 from /home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/init/do_mo
unts.c:12:
/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/include/linux/pagemap.h: In func
tion ΓÇÿfault_in_pages_readableΓÇÖ:
/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/include/linux/pagemap.h:237: err
or: read-only variable ΓÇÿ__gu_valΓÇÖ used as ΓÇÿasmΓÇÖ output
/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/include/linux/pagemap.h:237: err
or: read-only variable ΓÇÿ__gu_valΓÇÖ used as ΓÇÿasmΓÇÖ output
/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/include/linux/pagemap.h:237: err
or: read-only variable ΓÇÿ__gu_valΓÇÖ used as ΓÇÿasmΓÇÖ output
/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/include/linux/pagemap.h:237: err
or: read-only variable ΓÇÿ__gu_valΓÇÖ used as ΓÇÿasmΓÇÖ output
/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/include/linux/pagemap.h:243: err
or: read-only variable ΓÇÿ__gu_valΓÇÖ used as ΓÇÿasmΓÇÖ output
/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/include/linux/pagemap.h:243: err
or: read-only variable ΓÇÿ__gu_valΓÇÖ used as ΓÇÿasmΓÇÖ output
/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/include/linux/pagemap.h:243: err
or: read-only variable ΓÇÿ__gu_valΓÇÖ used as ΓÇÿasmΓÇÖ output
/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/include/linux/pagemap.h:243: err
or: read-only variable ΓÇÿ__gu_valΓÇÖ used as ΓÇÿasmΓÇÖ output
make[2]: *** [init/do_mounts.o] Error 1
make[1]: *** [init] Error 2
make: *** [_all] Error 2
   
  Thanks and Regards,
  Krishna

		
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Re: compilation problem with kernel 2.6.15

[James E Wilson]

On Tue, 2006-03-28 at 06:37, Krishna wrote:
>  err
> or: read-only variable ΓÇÿ__gu_valΓÇÖ used as ΓÇÿasmΓÇÖ output

This means a new error check in gcc has found a latent kernel bug.

It is also sometimes the case that a new linux kernel finds a latent gcc
bug.

Note, in general, key parts of linux such as the kernel, glibc, and gcc,
often have such heavy dependencies on each other that you can not pick
and choose random versions.  If you want to use a particular kernel
version, then there are often particular glibc and gcc versions you
should use with it, otherwise you are likely to run into trouble.

This link:
    http://www.linux-mips.org/wiki/Toolchains#Prologue
recommends gcc-3.4.  And if you follow the "recommended" link to
    http://www.linux-mips.org/wiki/GCC
it specifically recommends against use of gcc-4.1 for compiling the
linux kernel, as this hasn't been well tested yet.
-- 
Jim Wilson, GNU Tools Support, http://www.specifix.com

Re: compilation problem with kernel 2.6.15

[Krishna]

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I downloaded the exact tools and followed exact procedure suggested in http://www.linux-mips.org/wiki/Toolchains#Prologue. But while trying to cross compile the kernel 2.6.15 got the following error:
   
  (root@Jamuna:/home/ssf/bdcom/linux-mips-kernels/linux-2.6.15)# make O=/home/ssf
  /bdcom/linux-mips-kernels/linux-mips-kernel-2.6.15 ARCH=mips CROSS_COMPILE=mips
  el-unknown-linux-gnu-
    Using /home/ssf/bdcom/linux-mips-kernels/linux-2.6.15 as source for kernel
    GEN    /home/ssf/bdcom/linux-mips-kernels/linux-mips-kernel-2.6.15/Makefile
    CHK     include/linux/version.h
    CC      arch/mips/kernel/asm-offsets.s
    GEN     include/asm-mips/asm-offsets.h
    CC      scripts/mod/empty.o
    MKELF   scripts/mod/elfconfig.h
    HOSTCC  scripts/mod/file2alias.o
    HOSTCC  scripts/mod/modpost.o
    HOSTCC  scripts/mod/sumversion.o
    HOSTLD  scripts/mod/modpost
    CC      init/main.o
    CHK     include/linux/compile.h
    SKIPPED include/linux/compile.h
    CC      init/version.o
    CC      init/do_mounts.o
    CC      init/do_mounts_rd.o
    CC      init/do_mounts_initrd.o
    CC      init/do_mounts_md.o
    LD      init/mounts.o
    CC      init/initramfs.o
    CC      init/calibrate.o
    LD      init/built-in.o
    CHK     usr/initramfs_list
    /home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/scripts/gen_initramfs_list.sh:
   Cannot open 'y'
  make[2]: *** [usr/initramfs_list] Error 1
  make[1]: *** [usr] Error 2
  make: *** [_all] Error 2
   
  can anyone suggest me what is the problem here?
   
  Thanks in advance,
  Krishna

James E Wilson <wilson@specifix.com> wrote:
  On Tue, 2006-03-28 at 06:37, Krishna wrote:
> err
> or: read-only variable ΓÇÿ__gu_valΓÇÖ used as ΓÇÿasmΓÇÖ output

This means a new error check in gcc has found a latent kernel bug.

It is also sometimes the case that a new linux kernel finds a latent gcc
bug.

Note, in general, key parts of linux such as the kernel, glibc, and gcc,
often have such heavy dependencies on each other that you can not pick
and choose random versions. If you want to use a particular kernel
version, then there are often particular glibc and gcc versions you
should use with it, otherwise you are likely to run into trouble.

This link:
http://www.linux-mips.org/wiki/Toolchains#Prologue
recommends gcc-3.4. And if you follow the "recommended" link to
http://www.linux-mips.org/wiki/GCC
it specifically recommends against use of gcc-4.1 for compiling the
linux kernel, as this hasn't been well tested yet.
-- 
Jim Wilson, GNU Tools Support, http://www.specifix.com




*Krishna*
		
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Re: compilation problem with kernel 2.6.15

[James E Wilson]

On Wed, 2006-03-29 at 03:49, Krishna wrote:
>   CHK     usr/initramfs_list
> 
> /home/ssf/bdcom/linux-mips-kernels/linux-2.6.15/scripts/gen_initramfs_list.sh:
>  Cannot open 'y'

Use the command
    make V=1
to get slightly more useful make output.

If this doesn't show anything wrong, then try running the script
manually with shell tracing turned on.
   cd scripts
   sh -x gen_initramfs_list.sh

This doesn't look like a compiler issue.  It looks more like an issue
with your system, or with the kernel sources that you have extracted. 
The only thing happening here is that a shell script is being run from
make.  I don't see how this could have happened unless something is
wrong with your system.

What OS name and version are you using?  What shell program and
version?  What make program and version?
-- 
Jim Wilson, GNU Tools Support, http://www.specifix.com

Re: compilation problem with kernel 2.6.15

[peter fuerst]

On Tue, 28 Mar 2006, Krishna wrote:

> Date: Tue, 28 Mar 2006 06:37:08 -0800 (PST)
> From: Krishna <dhunjukrishna@yahoo.com>
> Reply-To: dhunjukrishna@gmail.com
> To: linux-mips@linux-mips.org
> Subject: compilation problem with kernel 2.6.15
>
> I tried to cross compile kernel 2.6.15 for BCM1480. Please tell me what the following error indicates:
> ...

Hi !

You are trying to use gcc 4.2, aren't you ?

`fault_in_pages_readable' is defined as follows:

fault_in_pages_readable(const char __user *uaddr, int size)
{
    volatile char c;
    int ret;
    ret = __get_user(c, uaddr);
    ...
}

this invokes the __get_user_nocheck(c,uaddr,sizeof(*uaddr)) macro:

#define __get_user_nocheck(x,ptr,size)	\
({	\
    __typeof(*(ptr)) __gu_val =  (__typeof(*(ptr))) 0;	\
    ...	\
})

defining `__gu_val' of type `const char', which gcc 4.2 (don't know about 4.1)
no longer accepts as asm-output (lvalue).  At least until this macro will be
changed, you should switch back to gcc 4.0.

kind regards

pf

Re: compilation problem with kernel 2.6.15

[Atsushi Nemoto]

>>>>> On Wed, 29 Mar 2006 01:06:48 +0200 (CEST), peter fuerst <pf@net.alphadv.de> said:
> defining `__gu_val' of type `const char', which gcc 4.2 (don't know
> about 4.1) no longer accepts as asm-output (lvalue).  At least until
> this macro will be changed, you should switch back to gcc 4.0.

This is same as gcc 4.1 and the macro in kernel 2.6.16 has been fixed
already.  This issue was discussed several times in linux-mips ML.

---
Atsushi Nemoto