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Subject:	Re: Compile as DOS application?
To:	Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
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From:	Lee via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Lee <ler762 AT gmail DOT com>
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On Sat, May 31, 2025 at 11:16 AM Jon Turney via Cygwin
<cygwin AT cygwin DOT com> wrote:
>
> On 31/05/2025 01:33, Takashi Yano via Cygwin wrote:
> > On Sat, 31 May 2025 09:00:10 +0900
> > Takashi Yano wrote:
> >> On Sat, 31 May 2025 00:39:24 +0200
> >> Dan Shelton wrote:
> >>> Hello!
> >>>
> >>> Does Cygwin have a compiler which allows compiling ISO C applications
> >>> as DOS *.exe?
>
> Actually, we do have a package for an (old) version of djgpp, which I
> believe targets DOS executables.

At this point I'm pretty much a cargo-cult programmer, but for
whatever it's worth

i686-w64-mingw32-gcc
will build a non-gui *.exe program - which is a dos program, yes?

and for a windows program:

if test $target_type = mingw; then
  WIN_ONLY=
  CFLAGS="$CFLAGS -DWINVER=0x501"
  SPECIAL_CFLAGS="-mwindows"
dnl from the cygwin FAQ: The regular setup allows you to use the
-mwindows option
dnl to include a set of the basic libraries user32, gdi32 and comdlg32.
dnl (and also make your program a GUI program instead of a console program)
  PTHREAD_LIB=-lpthread
  echo "Using mingw32 (Win32 GUI)"
else

Regards,
Lee

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