Re: Patch for the getpagesize module

[Martin Lambers]

On Mon, Dec 03, 2007 at 12:39:15PM +0100, Bruno Haible wrote:
> > MinGW has a getpagesize() function, but does not declare it.
> 
> Strange. The mingw system I have access to does not have a getpagesize()
> function. In yours, in which library is it defined? And what is your mingw
> system? MSYS, Cygwin-crosscompiled, or Debian-crosscompiled?

It seems to be only in libgcc.a, both in MinGW-5.1.3+MSYS and
Debian-crosscompiled (version 3.4.5.20060117.1.dfsg-2 from etch). 
How should this be handled? 

> > I removed the untested MSVC implementation from the previous patch.
> 
> Actually, I think it's better to treat mingw and MSVC systems the same
> where possible.
> 
> The implementation that you gave in your previous patch
> 
>  #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
>    SYSTEM_INFO system_info;
>    GetSystemInfo (&system_info);
>    return system_info.dwPageSize;
> 
> is the same as the one used in GNU clisp for 10 years, so you can assume
> that it works. (And its value on 32-bit x86 platforms is 0x1000.)
> 
> I would therefore find it reasonable to create a lib/getpagesize.c file
> just for this case of native Windows. What do you think?

Yes, but I'm not sure how the conditional compilation of this file
should be handled.
Should getpagesize.m4 call AC_LIBOBJ([getpagesize]) only on W32? 
Or should it be compiled for all systems lacking getpagesize(), and only
provide a definition for W32?

Martin