Re: linux libio solution

[hjl at lucon dot org (H.J. Lu)]

> 
> I've just successfully built a version lib libstdc++ on Linux/Alpha
> against stock Red Hat libraries.  The technique I used is applicable
> to all of the Linux libio problems.
> 
> We build all of libio, ld -r it into one big .o, and use objcopy to
> make all of the non-iostreams symbols local, so that (1) they are
> not exported and (2) the iostreams functions are forced to use the
> local copy.  The drawback is that "cout << 1" now includes a 2M
> object file.  The mitigating factor is that if you use shared libs,
> you won't notice.
> 
> At the moment, I've done this by hand, and so still need to turn it
> into something that can be used in a Makefile.  Further, I had to
> modify binutils to add the privitization option (5 lines of code).
> 
> Our choice here is either (1) require a binutils snapshot [eww], or
> (2) write a special program that tinkers with ELF symbol tables
> directly, and include that in the distribution.
> 
> Shall I be writing that special program, then?

I am not sure if it will work very. Have you tried mixed stdio/iostream
code? Are they in sync. For Linux, cout == stdout.

I will try to find a kludge this weekend.


H.J.