Please check the GNU-Win32 sites listed below for further details about Cygwin.
Recent Snapshots
Cygwin has a fully functional self-hosting toolchain. The Cygwin environment implements a functional POSIX layer under Windows. Building GPC for Cygwin should (if you have the full Cygwin environment and toolchain) be as straightforward as building it under Linux.
However, in order to get
a full GPC runtime library, you also need
to download os-hacks.h
and
copy it to your Cygwin installation's
"include" directory (typically /usr/include/) before
attempting
to "configure" and "build" GPC.
2. The main respository
for Mingw (and MSYS) binaries is:
http://sourceforge.net/project/showfiles.php?group_id=2435
3. The Mingw FAQ is here: http://www.mingw.org/mingwfaq.shtml
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April 2008, The African Chief.