Re: [INTERNALS-WIN] RE: [PHP-DEV] Differences in VC6 and VC9 Windows builds and MSSQL Driver.

On Mon, Jan 5, 2009 at 11:41 PM, Uwe Schindler <[email protected]> wrote:

> With Apache Webserver this is completely different. The Apache webserver was
> designed originally on Unix platform. Because of that, the public API of
> this webserver was designed using symbols and structs of the UNIX/POSIX
> libc. Because of that, the API is only compatible, as long as the webserver
> is linked with DLLs that use the same CRT. If you try to link an Apache
> linked with Cygwin and a module from VC9, it will crash. If you try to link
> a mingw Apache with Cygwin, it crashes. If you try to link an Apache from
> MSVCRT 6 with PHP with VCRT 9, it crashes. Very simple or not?

Indeed, a very effective way to say: do not do that :)

> The same happens with extensions. But the problem is here is often very
> simple. If the public API of this extension uses symbols from the windows
> world, there is no problem, it just works (ODBC, Win32, Java, NSAPI, Sybase
> CT,...). If it uses symbols from the UNIX/POSIX world, the problems begin
> (not because of the word UNIX/POSIX in it - because of the different world
> in it).

Thinking about that, at some point we could write a little doc on how
to write portable extensions. There is definitively a need of that...


> Greetings from a person that used Windows and POSIX always next to each
> other in his mind...

Same here, I feel your pain :)

And thanks a lot for all explanations! Such good posts are rare :)

Cheers,
-- 
Pierre

http://blog.thepimp.net | http://www.libgd.org