Re: mbstate_t not properly detected

[Denis Corbin]

Noah Misch wrote:
> On Mon, Feb 14, 2005 at 11:52:19AM +0100, Denis Corbin wrote:
>
> > On several systems (Solaris 2.6, openBSD 3.6, macOS X 10.2) the
> > "./configure && make" fails due to the redefinition by the configure 
> > script of the mbtate_t type, on Linux instead it seems to work properly,
> > with the same compiler version.
> >
> > the problem seems to be linked with the gcc C++ header files:
> > ----
> > In file included from /usr/include/gcc/darwin/3.3/c++/bits/fpos.h:45,
> >                 from /usr/include/gcc/darwin/3.3/c++/iosfwd:49,
> >                 from 
> > /usr/include/gcc/darwin/3.3/c++/bits/stl_algobase.h:70,
> >                 from /usr/include/gcc/darwin/3.3/c++/algorithm:66,
> > /usr/include/gcc/darwin/3.3/c++/cwchar:65: error: semicolon missing 
> > after    struct declaration
> > ----
>
>
> This is an excerpt from config.log?  

No, this is the compilation error from gcc.

> Do the relevant config.log bits for the
> other two affected systems look similar? 

I have not access to a Solaris 2.6 system but the output reported is 
quite similar to the one I can see on MacOS X. On OpenBSD using 
gcc-3.3.2 and the sample test with autoconf 2.95b I could not reproduce 
the problem. I will try tomorrow with the release autoconf 2.95b and 
also with the full 'dar' package.

> If not, please post a full config.log
> from running your test case `configure' on each affected system.

The log files are available here: http://dar.linux.free.fr/logs.tar.gz 
I also attach to this mail the config.log file (gzipped).

> It is fishy that the trivial test program does not build, yet the bits of your
> project that use mbstate_t do build when you manually hack config.h.  Do you use
> mbstate_t in a C file or a C++ file? 

not directly in the program, I just using some of the libstdc++ 
algorithms, and including the <algorithm> header files seems to cause 
the mbstate_t conflict.

> Do you include <wchar.h> in that file?

No, if you have a look at the sample code I've sent you
(still available at http://dar.linux.free.fr/autoconf_test.tar.gz )
you can see no <wchar.h> no use of mbstate_t.

---
#include "config.h"

#include <algorithm>
#include <iostream>

using namespace std;

main()
{
    cout << "Hello World !" << endl;
}
---

>

Cheers,
Denis.

config.log.gz
Description: Unix tar archive