Re: [Cegcc-devel] Regarding MinGW target.

[Pedro A. <ped...@po...>]

Danny Backx wrote:

>On Mon, 2006-09-25 at 22:51 +0100, Pedro Alves wrote:
>  
>
>>What I am trying to do is remove the #ifdef __MINGW32CE__ from the patch,
>>and make the checks check for feature, not target.
>>eg:
>>
>>-#ifdef __MINGW32CE__
>>+#ifdef HAVE_STRCOLL
>>#else
>>#endif
>>
>>And have the autoconf* stuff define the HAVE_STRCOLL.
>>    
>>
>
>In general, that would be the better way to proceed - I completely agree
>on that.
>
>However, for this to work, you need to figure out a way for autoconf to
>figure out whether you have these features.
>
>I am not sure that you can reliably do this in a cross-compiler.
>
>  
>

Sure you can, with AC_CHECK_HEADER(S) and AC_CHECK_FUNCTION(S).
The thing is where to place them. Look into libstdc++-v3/crossconfig.m4,
It looks like every other target does an AC_CHECK_HEADERS on its own.
Does this mean that for example to add errno.h to the list, I will have 
to add the check
to every other target too? If I don't, wherever in the code an #ifdef 
HAVE_ERRNO_H
appears, it will not be defined even if the header exists, right?

>	Danny
>  
>