Re: Wrong linker chosen..

[Behdad Esfahbod]

On Tue, 2008-04-15 at 20:09 +0200, Ralf Wildenhues wrote:
> Hi Behdad,

Hi Ralf,

Thanks for the quick response.

> * Behdad Esfahbod wrote on Tue, Apr 15, 2008 at 07:39:19PM CEST:
> > In short, all cairo source is C code, except for the BeOS backend that
> > is C++.  So we have a block like this in our Makefile.am:
> 
> > However, even if CAIRO_HAS_BEOS_SURFACE is false, the C++ linker is
> > chosen to link cairo.  That we want to avoid.  Any hints?
> 
> You have to help automake pick the right linker, its linker choosing
> algorithm is blissfully unaware of conditionals.  You should be able to
> set libcairo_la_LINK or cairo_LINK inside conditionals.  Look in a
> Makefile.in how they are typically set (since this is an implementation
> detail, beware: this changed between 1.9.6 and 1.10+).

I would have been happy doing that if it was as simple as:

libcairo_la_LINK = $(LINK)
and
libcairo_la_LINK = $(CXXLINK)

But as it happens now I can't do that, since libcairo_la_LDFLAGS and
libcairo_la_CFLAGS need to go in the middle of the LINK command.  It
prolly works if I append at the end, but don't want to change any flag
orders (yet).

> If that Makefile.am otherwise has no other C++ code, and you are not
> using cairo_LDFLAGS, you can just override
>   CXXLINK = $(LINK)

I like this one.

> I guess.

Doesn't seem to work though.  My libcairo_la_LINK is still a modified
version of the CXXLINK.

> Hope that helps.

It did.  I fully understand the problem now.

> Of course somebody writing a patch to lift this
> limitation in Automake would help even more.  ;-)

Shouldn't be too hard.  So this email of your goes to sit in my inbox
beside two other ones from you, from 2006 and 2007.  Nice :-D.  See you
in 2009!

> Cheers,
> Ralf

Cheers,
-- 
behdad
http://behdad.org/

"Those who would give up Essential Liberty to purchase a little
 Temporary Safety, deserve neither Liberty nor Safety."
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