Re: [patch, libgfortran] Build with -ffunction-sections -fdata-sections

[Tobias Schlüter <tobias dot schlueter at physik dot uni-muenchen dot de>]

Hello,

Ulrich Weigand wrote:
> most GCC target libraries are built with -ffunction-section -fdata-sections
> if the compiler / target supports those options.  However, this is currently
> not the case for libgfortran.  This makes the library more difficult to use
> on targets like the SPU, where only static linking is supported and code space
> is precious.
>
> The following patch adds support for using -ffunction-sections -fdata-sections
> to the libgfortran Makefiles, using code that is basically the same as in
> libstdc++, libmudflap etc.
>
> This brings done the minimal footprint of the Fortran library on SPU from
> > 150 KB to about 40 KB, and in addition enables use of automatic overlay
> support to run even programs making significant use of the library.

Doesn't this contradict the documentation which says:
"Only use these options when there are significant benefits from doing 
so. When you specify these options, the assembler and linker will create 
larger object and executable files and will also be slower. You will not 
be able to use gprof on all systems if you specify this option and you 
may have problems with debugging if you specify both this option and -g."

Cheers,
- Tobi