changing the entry point

changing the entry point

[Yannick Cote]

Hi there,

I am trying to find an explaination on why "ld -e myfunc ..." works if
"myfunc" is in a .o file but will fail when the function is in an
archive .a file.

The ld output will look like this (in the case of linking against an
archive .a file):

ld: warning: cannot find entry symbol myfunc; defaulting to 00010000

I hope this is the right place for that type of question,

Thanks,

 - Yan

Re: changing the entry point

[Daniel Jacobowitz]

On Thu, Oct 19, 2006 at 10:07:40AM -0400, Yannick Cote wrote:
> Hi there,
> 
> I am trying to find an explaination on why "ld -e myfunc ..." works if
> "myfunc" is in a .o file but will fail when the function is in an
> archive .a file.
> 
> The ld output will look like this (in the case of linking against an
> archive .a file):
> 
> ld: warning: cannot find entry symbol myfunc; defaulting to 00010000

Try "-e myfunc -u myfunc", which will force the symbol to be pulled in
to the binary.  Symbols from archives are only selected if there is an
undefined reference to them.

Generally, perhaps -e ought to imply -u...

-- 
Daniel Jacobowitz
CodeSourcery