configure.in: Use "missing" script to generate warning if flex or bison programs not found...

* configure.in: Use "missing" script to generate warning if
flex or bison programs not found, instead of invoking "false".
* configure: Rebuilt.

From-SVN: r59735

gcc/ChangeLog

+i2002-12-02  Craig Rodrigues  <rodrigc@gcc.gnu.org>
+
+	* configure.in: Use "missing" script to generate warning if
+	flex or bison programs not found, instead of invoking "false".
+	* configure: Rebuilt.
+
 Mon Dec  2 20:28:48 CET 2002  Jan Hubicka  <jh@suse.cz>
 
 	* unroll.c (copy_loop_body): Copy CONST_OR_PURE_CALL_P.

gcc/configure.in

@@ -601,7 +601,7 @@ dnl LEXLIB is not useful in gcc.
 if test -f $srcdir/../flex/skel.c; then
   FLEX='$(objdir)/../flex/flex'
 else
-  AC_CHECK_PROG(FLEX, flex, flex, false)
+  AC_CHECK_PROG(FLEX, flex, flex, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing flex)
 fi
 
 # Bison?
@@ -609,7 +609,7 @@ fi
 if test -f $srcdir/../bison/bison.simple; then
   BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/'
 else
-  AC_CHECK_PROG(BISON, bison, bison, false)
+  AC_CHECK_PROG(BISON, bison, bison, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing bison)
 fi
 
 # These libraries may be used by collect2.