i686-XXX-mingw32 compilers and __MINGW32_MINOR_VERSION macro: 3.18 or 3.11?

[Frédéric Bron <frederic dot bron at m4x dot org>]

Using cygwin 1.7.9(0.237/5/3) 2011-03-29 10:10.

The following program:

#include <iostream>
int main() {
        std::cout<<__MINGW32_MAJOR_VERSION<<'.'<<__MINGW32_MINOR_VERSION<<'\n';
        return 0;
}

outputs:
- 3.18 when built with i686-pc-mingw32-g++
- 3.11 when built with i686-w64-mingw32-g++
why?
I have mingw-runtime version 3.18 installed. Is it used only by i686-pc-mingw32?

I found that:
$ grep -r "#define *__MINGW32_MINOR_VERSION" /usr/i686-pc-mingw32/
/usr/i686-pc-mingw32/sys-root/mingw/include/_mingw.h:#define
__MINGW32_MINOR_VERSION     18
and
$ grep -r "#define *__MINGW32_MINOR_VERSION" /usr/i686-w64-mingw32/
/usr/i686-w64-mingw32/sys-root/mingw/include/_mingw_mac.h:#define
__MINGW32_MINOR_VERSION 11

This seems to be one of the reasons that prevents me to use boost on cygwin 1.7.

Regards,

Frédéric

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