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[Gold] problem building linux kernel

Markus Trippelsdorf markus@trippelsdorf.de
Thu Nov 18 10:13:00 GMT 2010 
On 2010.11.18 at 01:07 -0800, Doug Kwan (關振德) wrote:
> My system is a 64-bit x86_64 running Ubuntu Lucid and have gcc-4.4.3.
> I built a kernel tool-chain with top of trunk gold and gcc-4.5.1 then
> I use it to build the kernel again.  I now got the __jump_table
> section but objcopy worked fine.
> 
> I am sure I used the right tools:
> 
> $ ld -v
> GNU gold (GNU Binutils 2.21.51.20101118) 1.10
> $ gcc -v
> Using built-in specs.
> COLLECT_GCC=gcc
> COLLECT_LTO_WRAPPER=/home/dougkwan/kernel-toolchain/install/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.5.1/lto-wrapper
> Target: x86_64-unknown-linux-gnu
> Configured with: ../gcc-4.5.1/configure --enable-languages=c
> --with-mpfr=/home/dougkwan/gcc-lib --disable-bootstrap
> Thread model: posix
> gcc version 4.5.1 (GCC)

Something must cause the error in my case. So let's compare our
configuration:

 % ld -v
GNU gold (GNU Binutils 2.21.51.20101118) 1.10
 % gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.5.1/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --prefix=/usr --enable-languages=c,c++,fortran --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-gnu-unique-object --enable-lto --enable-plugin --disable-multilib --disable-libstdcxx-pch --with-system-zlib --with-ppl --with-cloog --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
Thread model: posix
gcc version 4.5.1 (GCC)

I configured binutils with:
 % ./configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-64-bit-bfd --disable-multilib --enable-gold=both --enable-plugins

After "make install" I ran:
# rm /usr/bin/ld
# ln -fs /usr/bin/ld.gold /usr/bin/ld

-- 
Markus
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