Re: [Swig-user] Building Ruby Extension on Visual Studio 6

[Andrew A. <an...@ob...>]

I ran into the same problem using SWIG 1.3.29 with Ruby 1.8.5 in msys/=20=

mingw on woe32 (Windows XP).

After much digging I discovered that ruby.h, or more specifically the =20=

win32.h it includes, is #defining 'read' & 'write' macros that are =20
breaking iostream:

 =46rom Ruby's win32.h:

#define read(f, b, s)		rb_w32_read(f, b, s)
#define write(f, b, s)		rb_w32_write(f, b, s)

As a workaround I manually edited the SWIG generated wrapper file and =20=

inserted:

#include <iostream>

before:

#include <ruby.h>

This hack worked around the problem, but I have yet to find a =20
satisfying / automatic fix.

I tried putting:

%header %{
#include <iostream>
%}

in my interface file, but that 'include' code is still spliced into =20
the generated wrapper *after* the '#include <ruby.h>' line, which is =20
of course too late.

this appears to be a Ruby bug... it seems unreasonable to #define =20
macros with such generic names as 'read' and 'write' in a header and =20
expect no namespace conflicts.



On Apr 27, 2007, at 12:34 AM, Paul McCumber wrote:

> I have a pretty simple class exposed.    I=92ve used the tool in =20
> Visual Studio for quite a while with Tcl and know a little bit =20
> about swig and Visual Studio but I can=92t get a =93Hello World=94 =20
> working here with Ruby.   I get the following error and somebody =20
> else got the same thing and it didn=92t look like anyone followed =20
> up.    Any clue to what I=92m doing to get messages such as:
>
>
>
> RubyClient_wrap.cxx
>
> c:\program files\microsoft visual studio\vc98\include\ostream=20
> (241) : warning C4003: not enough actual parameters for macro 'write'
>
> c:\program files\microsoft visual studio\vc98\include\ostream=20
> (241) : error C2059: syntax error : ')'
>
>         c:\program files\microsoft visual studio\vc98\include=20
> \ostream(272) : see reference to class template instantiation =20
> 'std::basic_ostream<_E,_Tr>' being compiled
>
> c:\program files\microsoft visual studio\vc98\include\ostream=20
> (242) : error C2143: syntax error : missing ')' before '{'
>
>
>
> Paul
>
> ----------------------------------------------------------------------=20=

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