Re: missing linker symbols w/ binutils-2.17

[Nick Clifton <nickc at redhat dot com>]

Hi John,

> The linker script which follows has been working fine with binutils-2.15 
> on a number of architectures. Now that I'm attempting to upgrade to 
> 2.17, I find that one of the linker-script-defined symbols does does NOT 
> get added to the symbol table.

>  The
> "lexunix_prefetch_1_start" symbol simply doesn't make it into the 
> resulting symbol file.

Can you provide a way to reproduce this problem ?

I tried to reproduce it using the script you supplied, but the symbol 
appeared in the symbol table:

  % cp hello.o lexthread.o
  % cp hello.o lexunix.o
  % arm-ld hello.o -T johns_script.t
  warning: cannot find entry symbol _start; defaulting to 0000000000008000
  % nm a.out
  00000000005a0054 T lexunix_prefetch1_end
  00000000005a0054 A lexunix_prefetch1_start
  00000000005a0054 T lexunix_prefetch2_end
  00000000005a0054 T lexunix_prefetch2_start
  00000000005a0054 T lexunix_prefetch_end
  00000000005a0054 A lexunix_prefetch_start
  00000000005a0054 t my_variable
  00000000005a0078 t my_variable
  00000000005a009c t my_variable

This was using the current binutils mainline sources, rather than the 
2.17 release sources, so it is possible that there was a bug that has 
now been fixed.

Cheers
  Nick