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https://issues.apache.org/jira/browse/THRIFT-2150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13750083#comment-13750083
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Ben Craig commented on THRIFT-2150:
-----------------------------------

I would prefer not to add #define WIN32_LEAN_AND_MEAN to an externally visible 
header file.  This doesn't fix the Winsock / Winsock2 incompatibility in all 
the cases, as the including code could have pulled in Windows.h before pulling 
in any thrift headers.  In addition, putting the #define in windows/config.h 
will likely break code that was relying on the non-lean_and_mean headers.



It is possible to add #define WIN32_LEAN_AND_MEAN to thrift's .cpp files, but 
that doesn't get much of an improvement in build times.
                
> Should windows/config.h define WIN32_LEAN_AND_MEAN?
> ---------------------------------------------------
>
>                 Key: THRIFT-2150
>                 URL: https://issues.apache.org/jira/browse/THRIFT-2150
>             Project: Thrift
>          Issue Type: Improvement
>          Components: C++ - Library
>    Affects Versions: 0.9.1
>         Environment: MSVC
>            Reporter: Chris Stylianou
>              Labels: c++, msvc, thrift, windows
>
> As "windows/config.h" includes Winsock2.h, is it not best practise to define 
> before it: 
> {code}WIN32_LEAN_AND_MEAN{code} 
> This is in case someone includes Windows.h, which automatically includes the 
> incompatible Winsock.h. It also reduces the size of the Win32 header files 
> which helps compilation speeds :)

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