Re: Compiling glib applications

[Martyn Russell <martyn lanedo com>]

On 09/08/12 14:42, Stef Walter wrote:
> On 08/09/2012 02:46 PM, Lanoxx wrote:
> > But it turns out this is wrong, and the correct way is:
> >
> >      gcc main.c `pkg-config --cflags glib-2.0` `pkg-config --libs
> > glib-2.0` -o main --std=c99
> >
> > The only difference is that the file name is in the front instead of the
> > end. When I tried the first version, it would compile but give link
> > errors such as:
> > main.c:(.text+0x1e1): undefined reference to `g_list_append'. Once I put
> > the file name at the beginning it worked well.
>
> That's odd. I haven't experienced this at all, even when doing compiling
> and linking in one step.
>
> I'm sure someone more knowledgeable than me will pipe in.

I had this years ago when building on Windows. There it used to matter 
the ordering which you used for linking. On Linux (on the other hand) 
you could easily just use 1 pkg-config command with both --cflags --libs 
and it would work.

Tor might have more insight here, but IIRC, it was because symbols had 
to be resolved hierarchically (i.e. libxml would come before glib 
because of the symbol dependency chain).

Not sure this is still the case these days, the usual way I would do 
this is:

  gcc --std=c99 main.c -o main `pkg-config --cflags --libs glib-2.0`

--
Regards,
Martyn

Founder and CEO of Lanedo GmbH.