[AD] Problem compiling Allegro with ACE networking library.

["Kirk Black" <runesabre@xxxxxxxxxx>]

I'm building a multi-platform Allegro application that uses the ACE 
networking library.  Everything works on Mac and Linux builds, however, 
Allegro and ACE libraries don't play nice together and won't compile 
properly on Windows.  As a workaround, I build the Windows application using 
winsock but it would be nice if I didn't have this exception.  I'm sending a 
similar bug report to the ACE developers and see if one or both parties can 
help figure out the problem.

The general problem is one of an order of include files.  If you compile the 
code below as-is, you will get a bunch of errors complaining about macro and 
struct redefinitions such as the following (I've only included a sampling. 
There are a total of 71 of these errors):
c:\Program Files\Microsoft Visual Studio .NET 
2003\Vc7\PlatformSDK\Include\WinSock2.h(467): warning C4005: 'SO_DONTLINGER' 
: macro redefinition
c:\Program Files\Microsoft Visual Studio .NET 
2003\Vc7\PlatformSDK\Include\WinSock2.h(558): error C2011: 'sockaddr' : 
'struct' type redefinition
c:\ACE\ACE_wrappers\ace\OS_main.h(176): warning C4005: 'main' : macro 
redefinition

If you move the ace/Log_Msg.h header file to be compiled first, you get a 
single error:
c:\Program Files\Microsoft Visual Studio .NET 
2003\Vc7\include\allegro\system.h(31): fatal error C1001: INTERNAL COMPILER 
ERROR
       (compiler file 'msc1.cpp', line 2701)
        Please choose the Technical Support command on the Visual C++
        Help menu, or open the Technical Support help file for more 
information

If you try to put the allegro.h header first, then the ace/Log_msg.h and 
then the winalleg.h (or alternatively don't even include the winalleg.h 
header) you get the following errors with this program:

c:\Program Files\Microsoft Visual Studio .NET 
2003\Vc7\PlatformSDK\Include\WinGDI.h(541): error C2371: 'BITMAP' : 
redefinition; different basic types
c:\Program Files\Microsoft Visual Studio .NET 
2003\Vc7\PlatformSDK\Include\WinGDI.h(3587): error C2229: struct 
'tagDIBSECTION' has an illegal zero-sized array
c:\ACE\ACE_wrappers\ace\OS_main.h(176): warning C4005: 'main' : macro 
redefinition
c:\Documents and Settings\Kirk\My Documents\Visual Studio 
Projects\AllegroAceTest\main.cpp(14): error C2065: '_mangled_main' : 
undeclared identifier


I've created a simple program to illustrate the problem.

#include <allegro.h>
#include <winalleg.h>
#include "ace/Log_Msg.h"
int main(int argc, char* argv[])
{
   allegro_message("Allegro Message: Testing ACE and Allegro library 
integration" );
   ACE_DEBUG((LM_DEBUG, "ACE_DEBUG: Testing ACE and Allegro Library 
integration\n" ));
}
END_OF_MAIN();

In order to attempt to build this simple application and see the errors 
reported, you first need to build the ACE networking library on a Windows 
machine.  I currently am building this application and getting the errors 
with MSVC7 compiler.

1. Download ACE. http://deuce.doc.wustl.edu/ACE.zip.

2. Follow the build instructions for building ACE on Windows with MSVC++ 
http://www.cs.wustl.edu/~schmidt/ACE_wrappers/ACE-INSTALL.html#msvc

3. Create a simple MSVC7 project with one file and copy/paste the code in 
this post.

4. Set the project properties to be able to find the ACE include file and 
use the ACE dll for linking.

Thanks in advance!
Kirk Black