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From Curt Arnold <carn...@houston.rr.com>
Subject Re: VC5 and logger
Date Sat, 03 Jul 2004 03:14:29 GMT

On Jul 2, 2004, at 9:11 AM, Adnene Ben Abdallah wrote:

> Hi,
>   I had a problem when I tried to build log4cxx with the last MS 
> Platform
> SDK available. I got the following message:
> --------------------Configuration: dll - Win32 
> Release--------------------
> Compiling...
> condition.cpp
> F:\Development\IPA\log4\log4cxx-0.9.7\src\condition.cpp(73) : error 
> C2664:
> 'InterlockedCompareExchange' : cannot convert parameter 1 from 'void 
> ** ' to
> 'volatile long *'
>         Types pointed to are unrelated; conversion requires
> reinterpret_cast, C-style cast or function-style cast
> Error executing cl.exe.
> log4cxx.dll - 1 error(s), 0 warning(s)
> This seems to be the same problem.
> Could you please confirm that? I suppose that the patch you had 
> proposed
> isn't enough. I suppose that here we need more than "#if _MSC_VER <= 
> 1200",
> but I can't see what would be the right condition to add?

The prototypes for InterlockedCompareExchange, InterlockedIncrement etc 
in winbase.h was changed sometime between VC6 and VC7.
I assume that you are using either VC5 or VC6 (it shouldn't matter) to 
compile log4cxx with a more recent Platform SDK in the include path.  
The conditionals use the compiler version as an indication of the 
version of the Platform header files being used which results in an 
inappropriate choice of the older prototypes.

I don't see a way to calls these methods that would work for both 
prototypes, so the best solution would be to add another preprocessor 
macro to config_msvc.h that allows explicitly specifying whether the 
older or newer interlock prototypes should be used.  If something like:

#if _MSC_VER <= 1200

were added to config.h and

#if _MSC_VER == 1200

where changed to


Then VC5-7 would build properly with their provided include files and 
VC5 and 6 could use current include files by explicitly specifying 
HAVE_OLD_MS_INTERLOCK=0 in config_msvc.h or on the command line.

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