[ILUG] Statically linking only used functions

[Dave Airlie]

You might want to investigate -ffunction-sections -fdata-sections and the
linker --gc-sections switches..

Dave.

On Mon, 13 Sep 2004, Bryan O'Donoghue wrote:

> Rory Browne wrote:
>
> What I was hoping for was a mythical linker options a-la Mr Foster, which
> would remove non-referenced, or non-internally referenced functions, when
> linking directly to libblah.a "gcc -o blah /usr/lib/libblah.a"
>
> > Personally if I was using SQLite I'd use it as a dynamic library.
>
> That would be optimal, but at the same time, a single file, requires much less
> intervention by someone installing, especially if they are not so familiar
> with Linux... or at least... in theory
> > Unless you really need your binaries/deps to be as small as
> > possible(perhaps for embedded work)
>
> I think there is a vague to outside chance that the resulting binary _might_
> get recompiled/retargetted for use on some sort of low end motorola CPU, used
> under cygwin or just banged out in a production version under WhiteBox/Suse
>
> >  > there is no(?) link-time advantage to putting functions
> >  > into individual files for a shared library, which is,
> >  > IMHO, why this seems to be a dying art/skill/science?
>
> To be honest, I've never heard of putting each function into a seperate file,
> I'd say there's more then a few nails in that particular coffin !
>
>

-- 
David Airlie, Software Engineer
http://www.skynet.ie/~airlied / airlied at skynet.ie
pam_smb / Linux DECstation / Linux VAX / ILUG person