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Re: How to add a new target in binutils ?

On 2012å09æ21æ 01:27, Ian Lance Taylor wrote:
On Wed, Sep 19, 2012 at 11:41 PM, Shawn <> wrote:

     I'm new to binutils and I want to port a linker  to a new architecture.
What I need is just a very basic linker , which can link static elf object
files or static libraries into executables, no functionality for shared
library or dynamic link.
     I tried the Gold first,  but found it has been bounded to the binutils,
and can't be compiled separately. so I tried to port the bintuils as a
Although gold is part of the binutils, it does not use BFD.  So to
port gold it would suffice to just change the top level configure and
make files.
Thanks Ian, that's great, GOLD is a nice work. I plan to take the gold/ & elfcpp/powerpc.h as my start point.

But I still have some questions. At first I have tried to compile the gold separately with following command :
~/Work/binutils/binutils-mpu-2.22/gold/configure --prefix=/home/xiesl/Tools/binutils/

but error occurs:
/home/xiesl/Work/binutils/binutils-mpu-2.22/gold/ fatal errorï ../bfd/bfdver.hïno such file or directory
compilation interrupted.
make[2]: *** [options.o] error 1
make[2]:leaving `/tmp/build'
make[1]: *** [all-recursive] error 1
make[1]:leaving `/tmp/build'
make: *** [all] error 2

So can I compile the gold separately ?

configure: error: *** unknown target vector bfd_elf32_mpu_vec
You need to add your new vector to the list in bfd/ and
then run autoconf.
I added the bfd_elf32_mpu_vec in bfd/ as follows:
bfd_elf32_cr16_vec) tb="$tb elf32-cr16.lo elf32.lo $elf" ;;
bfd_elf32_mpu_vec) tb="$tb elf32-mpu.lo elf32.lo $elf" ;;

and the run the aclocal & autoconf , but errors
xiesl@ubuntu:~/Work/binutils/binutils-mpu-2.22/bfd$ aclocal warning: macro `AM_BINUTILS_WARNINGS' not found in library
xiesl@ubuntu:~/Work/binutils/binutils-mpu-2.22/bfd$ autoconf error: possibly undefined macro: AM_BINUTILS_WARNINGS
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation.

By the way, I have used the option "--enable-maintainer-mode" at the first try, Will this option update the configuration script automatically ?


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