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Date: Thu, 14 Jan 2010 12:32:23 +0000
From: Greg Chicares <gchicares AT sbcglobal DOT net>
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Subject: Re: Build problems using wxWidgets-2.8.10 / gcc-4.3.4 / cygwin-1.7.1  : multiple definitions of function select()
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On 2010-01-14 10:15Z, Schwerzmann Stephan wrote:
>  
> /usr/lib/gcc/i686-pc-cygwin/4.3.4/../../../../include/w32api/winsock.h:4
> 79: error: declaration of C function 'int select(int, _types_fd_set*,
> _types_fd_set*, _types_fd_set*, const timeval*)' conflicts with
>     /usr/include/sys/select.h:31: error: previous declaration 'int
> select(int, _types_fd_set*, _types_fd_set*, _types_fd_set*, timeval*)'

As to whether select() takes a const or non-const timeval* argument:

  http://msdn.microsoft.com/en-us/library/ms740141%28VS.85%29.aspx
msdn says it's const, so that's what include/w32api must do

  http://www.opengroup.org/onlinepubs/007908799/xsh/select.html
posix says it isn't const, so that's what /usr/include must do

So you can't combine them. See also:
  http://cygwin.com/ml/cygwin/2008-08/msg00133.html
| You're getting a bunch of errors because incluing winsock2.h causes lots
| of namespace clashes.  And how could it not?  It provides a different
| and incompatible set of definitions for the sockets API which is not
| compatible with the standard POSIX definitions in the Cygwin headers.
| Again: the problem is that you should not attempt to use the Winsock API
| from a Cygwin application.

>     ./src/msw/utils.cpp:407: warning: 'int
> cygwin_conv_to_full_win32_path(const char*, char*)' is deprecated

http://www.cygwin.com/ml/cygwin-cvs/2008-q1/msg00111.html
| (cygwin_conv_to_win32_path): Just call cygwin_conv_path with size set
| to MAX_PATH.
| (cygwin_conv_to_full_win32_path): Ditto.


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