X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=configure.in;h=859f7275941bb9b6239777550e24704bd9df10b3;hp=03b1c64a952dd0ff59a9ddf08c250f6bb62338c8;hb=d76c9bfec68e0efa6e1b8e95b32b66caf25cfc12;hpb=e656c0ca01fc196f0eb66972af7fc51cb83d9651

diff --git a/configure.in b/configure.in
index 03b1c64a..859f7275 100644
--- a/configure.in
+++ b/configure.in
@@ -28,14 +28,14 @@ dnl***************************************************************************
 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 1.688 2019/06/30 15:21:02 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: 1.688 $)
 AC_INIT(ncurses/base/lib_initscr.c)
 AC_CONFIG_HEADER(include/ncurses_cfg.h:include/ncurses_cfg.hin)
 
@@ -629,6 +629,22 @@ test -z "$FALLBACK_LIST" && USE_FALLBACKS="#"
 AC_SUBST(FALLBACK_LIST)
 AC_SUBST(USE_FALLBACKS)
 
+# The fallback feature in ncurses relies upon tic/infocmp outside the build
+# tree for generating the terminal descriptions that will be compiled into the
+# library.  If your toolchain is old, it may not handle current terminal
+# databases.  Use configure-options to point to the tools which will be used,
+# rather than the first ones found on the $PATH.
+if test -n "$FALLBACK_LIST"
+then
+	CF_WITH_PATH_PROG(TIC,     tic,     [for fallbacks], $PATH:/usr/local/ncurses/bin)
+	CF_WITH_PATH_PROG(INFOCMP, infocmp, [for fallbacks], $PATH:/usr/local/ncurses/bin)
+else
+	: ${TIC:=tic}
+	: ${INFOCMP:=infocmp}
+fi
+AC_SUBST(TIC)
+AC_SUBST(INFOCMP)
+
 AC_MSG_CHECKING(if you want modern xterm or antique)
 AC_ARG_WITH(xterm-new,
 	[  --without-xterm-new     specify if xterm terminfo should be old version],
@@ -1643,6 +1659,14 @@ wctype.h \
 
 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$ISC" = xyes ; then
@@ -2213,16 +2237,6 @@ SUB_MAKEFILES="$SUB_MAKEFILES misc/gen-pkgconfig:misc/gen-pkgconfig.in"
 fi
 AC_SUBST(cross_compiling)
 
-AC_PATH_PROG(TIC_PATH,tic,unknown,$PATH:/usr/local/ncurses/bin)
-if test -n "$FALLBACK_LIST"
-then
-	if test "$TIC_PATH" = unknown
-	then
-		AC_MSG_WARN(no tic program found for fallbacks)
-	fi
-fi
-AC_SUBST(TIC_PATH)
-
 if test "x$cf_with_tests" != xno ; then
 	MAKE_TESTS=
 else