From 8b965ad7ba1b213f9227099789def30ece367f24 Mon Sep 17 00:00:00 2001
From: Thien-Thi Nguyen <ttn@gnu.org>
Date: Mon, 8 Mar 2021 04:54:23 -0500
Subject: [PATCH] [build slog] Avoid AC_CYGWIN, AC_MINGW32
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* guile-readline/configure.ac: Instead, check ‘$host_os’
and set shell vars ‘CYGWIN’ and ‘MINGW32’ "manually".
---
 guile-readline/configure.ac | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/guile-readline/configure.ac b/guile-readline/configure.ac
index c8c8f7d60..b03e5467c 100644
--- a/guile-readline/configure.ac
+++ b/guile-readline/configure.ac
@@ -23,8 +23,15 @@ LT_INIT([win32-dll])
 dnl
 dnl Check for Winsock and other functionality on Win32 (*not* CygWin)
 dnl
-AC_CYGWIN
-AC_MINGW32
+case $host_os in
+  *cygwin* ) CYGWIN=yes;;
+	 * ) CYGWIN=no;;
+esac
+case $host_os in
+  *mingw32* ) MINGW32=yes;;
+	  * ) MINGW32=no;;
+esac
+
 EXTRA_DEFS=""
 if test "$MINGW32" = "yes" ; then
     if test $enable_shared = yes ; then