Re: Q: linker "-static" flag usage

[Denis Vakatov <vakatov at peony dot nlm dot nih dot gov>]

Thanks,
		  Alexander and H.J.,

So it looks that I'll have to detect the underlying "ld" at first,
and then apply relevant "-Wl,-FOOdynamic/-FOOstatic".
This is gonna be fun :-).

Then, more questions follow (sorry):

1) Where can I get the path/name of the linker used by "gcc"?

2) Am I right that I should use:
 a) for GNU  "ld" underlying linker:  -Wl,-Bstatic / -Wl,-Bdynamic
 b) for SUN  "ld" underlying linker:  -Wlinker -Bstatic / -Wlinker -Bdynamic
 c) for IRIX "ld" underlying linker:  mission impossible, "foged-aboud-it"

3) ...and (2a) will switch the linking policy correctly as it
 progresses through the library list,
 in the sense that e.g.
		  -Wl,-Bstatic -la1 -Wl,-Bdynamic -la2
 would force the link with "liba1.a" and "liba2.so".

?,
Denis Vakatov


-----------------------------------------------------------------------------
> Cc: gcc@gcc.gnu.org
> From: Alexandre Oliva <aoliva@cygnus.com>
> Organization: Cygnus Solutions, a Red Hat Company
> Date: 11 May 2000 17:56:16 -0300
> User-Agent: Gnus/5.0805 (Gnus v5.8.5) XEmacs/21.1 (Canyonlands)
> X-MIME-Autoconverted: from quoted-printable to 8bit by peony.nlm.nih.gov id QAA01615
> 
> On May 11, 2000, Denis Vakatov <vakatov@peony.nlm.nih.gov> wrote:
> 
> > 1) Will the "-static" flag affect the linking of ALL libs following
> >    him in the linker command-line?
> 
> This is not a compiler issue, but a linker issue, and the linker is
> not part of GCC.  The answer depends on which platform you're using.
> I believe it may even affect libs listed before `-static', on some
> platforms.
> 
> -- 
> Alexandre Oliva    Enjoy Guaranį, see http://www.ic.unicamp.br/~oliva/
> Cygnus Solutions, a Red Hat company        aoliva@{redhat, cygnus}.com
> Free Software Developer and Evangelist    CS PhD student at IC-Unicamp
> oliva@{lsd.ic.unicamp.br, gnu.org}   Write to mailing lists, not to me
> 
> 


-----------------------------------------------------------------------------
> Date: Thu, 11 May 2000 13:47:31 -0700
> From: "H . J . Lu" <hjl@lucon.org>
> Cc: gcc@gcc.gnu.org
> 
> On Thu, May 11, 2000 at 03:45:21PM -0400, Denis Vakatov wrote:
> > Hi,
> > 
> > Sorry, but I cannot get sufficient info about the use of "-static"
> > flag with GCC. After searching numerous discussions, and looking into
> > your manual(http://gcc.gnu.org/onlinedocs/gcc_2.html#SEC13), and
> > "man gcc", and "gcc -v --help", the only thing I got is:
> > 
> > | -static 
> > |     On systems that support dynamic linking, this prevents linking
> > |     with the shared libraries. On other systems, this option has no effect. 
> > 
> > I need to know an answer to 2 more questions:
> > 
> > 1) Will the "-static" flag affect the linking of ALL libs following
> >    him in the linker command-line?
> 
> No, "-static" applies to ALL libs in the linker command-line.
> 
> > 
> > 2) If (1) == TRUE, then -- is there a way to restore the default
> >    static/dynamic linking policy after you used "-static" flag in
> >    your command line (something like the "-Bdynamic" flag for
> >    Sun native compiler)?
> 
> I have been using
> 
> # gcc ... -Wl,-Bstatic -lfoo -Wl,-Bdynamic ...
> 
> Only libs between -Wl,-Bstatic and -Wl,-Bdynamic will be linked
> statically. BTW, I am using GNU ld.
> 
> 
> H.J.
>