[openib-general] [PATCH] osm: port to WinIB stack

[Michael S. Tsirkin]

Quoting r. Eitan Zahavi <eitan at mellanox.co.il>:
> The answer is that the DDK used for compiling opensm on WinIB is 
> particularly aggressive on casting issues like this and fails the 
> compilation.

AFAIK, DDK CL.EXE has a flag to give agressive warnings on potential "64
bit portability issues".

http://msdn2.microsoft.com/en-us/library/yt4xw8fh.aspx

	/Wp64 - Detects 64-bit portability problems
	/Wp64 is off by default in the Visual C++ 32-bit compiler and on by
	default in the Visual C++ 64-bit compiler.
	If you regularly compile your application with a 64-bit compiler, you
	may want to disable /Wp64 in your 32-bit compilations, as the 64-bit
	compiler will detect all issues.

CL.EXE seems to classify any conversion between types of different size as
a potential "64 bit portability issue".
I think that you also compiling with a flag which turns these warnings
into errors:

http://msdn2.microsoft.com/en-us/library/thxezb7y.aspx
	/WX Treats all compiler warnings as errors. For a new project, it may be
	    best to use /WX in all compilations

This flag is off by default.
It might be easier for you, in the future, to just turn it off than waste time
fixing the warnings.

-- 
MST