--- ntp-4.2.8p12.original/sntp/libopts/m4/libopts.m4	2018-11-12 17:54:57.747220846 +1300
+++ ntp-4.2.8p12/sntp/libopts/m4/libopts.m4	2018-11-12 18:00:50.626211641 +1300
@@ -114,12 +114,6 @@
   AC_PROG_SED
   [while :
   do
-      POSIX_SHELL=`which bash`
-      test -x "$POSIX_SHELL" && break
-      POSIX_SHELL=`which dash`
-      test -x "$POSIX_SHELL" && break
-      POSIX_SHELL=/usr/xpg4/bin/sh
-      test -x "$POSIX_SHELL" && break
       POSIX_SHELL=`/bin/sh -c '
           exec 2>/dev/null
           if ! true ; then exit 1 ; fi