Re: Building 2.2.12 with recent glib: "cannot convert `int*' to `void**' for argument"...

[Murray Cumming <murrayc murrayc com>]

On Wed, 2006-03-22 at 12:03 +0100, Toralf Lund wrote:
> For various technical reasons (I won't bother you with the details), I 
> want to compile gtkmm 2.2.12 on a setup with a quite recent glib version 
> (2.6 or newer.) Unfortunately, the build fails with the following message
> 
>     spawn.cc: In function `void Glib::spawn_async_with_pipes(const
>     std::string&, const Glib::ArrayHandle<std::string,
>     Glib::Container_Helpers::TypeTraits<std::string> >&, const
>     Glib::ArrayHandle<std::string,
>     Glib::Container_Helpers::TypeTraits<std::string> >&,
>     Glib::SpawnFlags, const SigC::Slot0<void>&, int*, int*, int*, int*)':
>     spawn.cc:92: error: cannot convert `int*' to `void**' for argument
>     `7' to `gboolean g_spawn_async_with_pipes(const gchar*, gchar**,
>     gchar**, GSpawnFlags, void (*)(void*), void*, void**, gint*, gint*,
>     gint*, GError**)'
> 
> 
> The explanation of this is simply that the type of "pid" arguments in 
> glib has changed from "int" to GPid, which is apparently equivalent to 
> "void *".
> 
> What do you think is the best way to solve this problem?

You need to find the relevant changes in gtkmm and back-port them to
gtkmm 2.2. You could put a patch online, in bugzilla for instance.

>  Has anyone else 
> encountered it, anyway? Also (a somewhat off-topic question), is there 
> any way I can tell g++ to ignore the error, i.e. allow implicit 
> conversion between int and void *?

-- 
Murray Cumming
murrayc murrayc com
www.murrayc.com
www.openismus.com