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From: Keith Thompson <Keith.S.Thompson+u@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: pure C90 environment
Date: Tue, 19 May 2020 16:40:52 -0700
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Bart <bc@freeuk.com> writes:
[...]
> Cygwin is rather mysterious. If it has mingw, I don't know if that's
> the same as the one running directly under Windows, which can link to
> WinAPI, or one runs under Cygwin which uses Linux-like libraries.
>
> But you can test with this program:
>
>     #include <windows.h>
>
>     int main(void) {
>         MessageBox(0,"World","Hello",0);
>     }

On Cygwin, that works correctly (displaying the pop-up) when I compile
it with any of:

    /usr/bin/gcc.exe
    /usr/bin/i686-w64-mingw32-gcc.exe
    /usr/bin/x86_64-pc-cygwin-gcc.exe
    /usr/bin/x86_64-w64-mingw32-gcc.exe

(gcc.exe is a hard link to x86_64-pc-cygwin-gcc.exe.)

-- 
Keith Thompson (The_Other_Keith) Keith.S.Thompson+u@gmail.com
Working, but not speaking, for Philips Healthcare
void Void(void) { Void(); } /* The recursive call of the void */