On 11/14/2012 07:16 PM, Jeff King wrote:
On Wed, Nov 14, 2012 at 10:13:28PM +0100, Torsten Bögershausen wrote:
b) Autodetection:
   (Just loud thinking), running
$grep mingw /usr/include/w32api/winsock2.h
  * This file is part of the mingw-w64 runtime package.
#include <_mingw_unicode.h>

on cygwin 1.7.17 indicates that we can use grep in the Makefile to
autodetect the "mingw headers"
Hmm. Can we rely on the /usr/include bit, though?

I assume a test-compile would be sufficient, but currently we do not do
anything more magic than "uname" in the Makefile itself to determine
defaults.  Maybe it would be better to do the detection in the configure
script? And then eventually flip the default in the Makefile once
sufficient time has passed for most people to want the new format (which
would not be necessary for people using autoconf, but would help people
who do not).


Cygwin changed the win32api implementation, and the old is not just no longer supported for the current release series, but virtually impossible to even install (several new packages are now installed, the old package is in the "obsolete" category, i.e., not available). The older cygwin 1.5 dll + utilities can be installed afresh, so that is why I set up to switch based upon dll version - the proposed test(s) and configuration would be to have git maintain compatibility with an unsupported Cygwin configuration. I just don't think this is worth the maintenance burden, but of course I am not the maintainer, just expressing my opinion.

I have no trouble renaming the macro to whatever seems to clarify things.

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