From 25091201d6aa1b0dd1db88acd0ec55e67490405d Mon Sep 17 00:00:00 2001
From: "jan.nijtmans" <nijtmans@users.sourceforge.net>
Date: Mon, 4 Nov 2019 12:03:56 +0000
Subject: Fix travis build on Windows (tweak to configure script was made on
 purpose, to workaround a bug in autoconf-2.59)

---
 win/configure | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/win/configure b/win/configure
index abefbb3..c6f95f5 100755
--- a/win/configure
+++ b/win/configure
@@ -3018,24 +3018,26 @@ fi
 
 echo "$as_me:$LINENO: checking whether ${MAKE-make} sets \$(MAKE)" >&5
 echo $ECHO_N "checking whether ${MAKE-make} sets \$(MAKE)... $ECHO_C" >&6
-set dummy ${MAKE-make}; ac_make=`echo "$2" | sed 'y,:./+-,___p_,'`
+set x ${MAKE-make}
+ac_make=`echo "" | sed 'y,:./+-,___p_,'`
 if eval "test \"\${ac_cv_prog_make_${ac_make}_set+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
   cat >conftest.make <<\_ACEOF
+SHELL = /bin/sh
 all:
-	@echo 'ac_maketemp="$(MAKE)"'
+	@echo '@@@%%%=$(MAKE)=@@@%%%'
 _ACEOF
-# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
-eval `${MAKE-make} -f conftest.make 2>/dev/null | grep temp=`
-if test -n "$ac_maketemp"; then
-  eval ac_cv_prog_make_${ac_make}_set=yes
-else
-  eval ac_cv_prog_make_${ac_make}_set=no
-fi
+# GNU make sometimes prints "make[1]: Entering ...", which would confuse us.
+case `${MAKE-make} -f conftest.make 2>/dev/null` in
+  *@@@%%%=?*=@@@%%%*)
+    eval ac_cv_prog_make_${ac_make}_set=yes;;
+  *)
+    eval ac_cv_prog_make_${ac_make}_set=no;;
+esac
 rm -f conftest.make
 fi
-if eval "test \"`echo '$ac_cv_prog_make_'${ac_make}_set`\" = yes"; then
+if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
   echo "$as_me:$LINENO: result: yes" >&5
 echo "${ECHO_T}yes" >&6
   SET_MAKE=
-- 
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