dnl
dnl Author: Thomas E. Dickey 1995-on
dnl
-dnl $Id: configure.in,v 1.679 2019/03/30 21:44:53 tom Exp $
+dnl $Id: configure.in,v 1.682 2019/06/23 21:26:48 tom Exp $
dnl Process this file with autoconf to produce a configure script.
dnl
dnl See https://invisible-island.net/autoconf/ for additional information.
dnl
dnl ---------------------------------------------------------------------------
AC_PREREQ(2.52.20170501)
-AC_REVISION($Revision: 1.679 $)
+AC_REVISION($Revision: 1.682 $)
AC_INIT(ncurses/base/lib_initscr.c)
AC_CONFIG_HEADER(include/ncurses_cfg.h:include/ncurses_cfg.hin)
CF_GETOPT_HEADER
+CF_CHECK_ENVIRON(environ)
+CF_CHECK_GETENV
+if test "x$cf_cv_consistent_getenv" = xno && \
+ test "x$cf_with_trace" = xyes
+then
+ AC_MSG_WARN(The NCURSES_TRACE environment variable is not supported with this configuration)
+fi
+
# check for ISC (this may also define _POSIX_SOURCE)
# Note: even non-Posix ISC needs <sys/bsdtypes.h> to declare fd_set
if test "x$ISC" = xyes ; then