--- a/common/autoconf/basics_windows.m4	Thu Mar 02 21:16:14 2017 +0000
+++ b/common/autoconf/basics_windows.m4	Fri Mar 03 01:44:55 2017 +0000
@@ -329,8 +329,8 @@
       AC_MSG_ERROR([Something is wrong with your cygwin installation since I cannot find cygpath.exe in your path])
     fi
     AC_MSG_CHECKING([cygwin root directory as unix-style path])
-    # The cmd output ends with Windows line endings (CR/LF), the grep command will strip that away
-    cygwin_winpath_root=`cd / ; cmd /c cd | $GREP ".*"`
+    # The cmd output ends with Windows line endings (CR/LF)
+    cygwin_winpath_root=`cd / ; cmd /c cd | $TR -d '\r\n'`
     # Force cygpath to report the proper root by including a trailing space, and then stripping it off again.
     CYGWIN_ROOT_PATH=`$CYGPATH -u "$cygwin_winpath_root " | $CUT -f 1 -d " "`
     AC_MSG_RESULT([$CYGWIN_ROOT_PATH])

--- a/common/autoconf/generated-configure.sh	Thu Mar 02 21:16:14 2017 +0000
+++ b/common/autoconf/generated-configure.sh	Fri Mar 03 01:44:55 2017 +0000
@@ -5170,7 +5170,7 @@
 #CUSTOM_AUTOCONF_INCLUDE
 
 # Do not change or remove the following line, it is needed for consistency checks:
-DATE_WHEN_GENERATED=1487934085
+DATE_WHEN_GENERATED=1488400074
 
 ###############################################################################
 #
@@ -16200,8 +16200,8 @@
     fi
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking cygwin root directory as unix-style path" >&5
 $as_echo_n "checking cygwin root directory as unix-style path... " >&6; }
-    # The cmd output ends with Windows line endings (CR/LF), the grep command will strip that away
-    cygwin_winpath_root=`cd / ; cmd /c cd | $GREP ".*"`
+    # The cmd output ends with Windows line endings (CR/LF)
+    cygwin_winpath_root=`cd / ; cmd /c cd | $TR -d '\r\n'`
     # Force cygpath to report the proper root by including a trailing space, and then stripping it off again.
     CYGWIN_ROOT_PATH=`$CYGPATH -u "$cygwin_winpath_root " | $CUT -f 1 -d " "`
     { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CYGWIN_ROOT_PATH" >&5