How is lang.opt processed?

[Neil Booth]

Toon Moene wrote:-

> >Thanks for the detailed explanation of how
> >GCC options work.  I'm currently thinking
> >of proposing a RFC with recommendations on
> >how to address this problem with gfortran.
> 
> Ditto.  Jim, are you reading from some documentation about this option 
> processing that I couldn't find ?  I've spend hours and hours to try to 
> deduce the option processing rules from debugging various parts of the 
> gcc driver, with no success.

gcc -v

is worth using just to see what it's passing to the underlying
programs.  This would have immediately revealed that -i8 and -r8
are being lost in the driver.

Neil.