1 ## Replacement for AC_PROG_LEX. -*- Autoconf -*-
2 ## by Alexandre Oliva <oliva@dcc.unicamp.br>
3 # Copyright (C) 1998-2024 Free Software Foundation, Inc.
5 # This file is free software; the Free Software Foundation
6 # gives unlimited permission to copy and/or distribute it,
7 # with or without modifications, as long as this notice is preserved.
9 # AM_PROG_LEX([OPTIONS])
10 # ----------------------
11 # Autoconf leaves LEX=: if lex or flex can't be found. Change that to a
12 # "missing" invocation, for better error output.
13 AC_DEFUN([AM_PROG_LEX],
15 AC_REQUIRE([AM_MISSING_HAS_RUN])dnl
16 AC_PROVIDE_IFELSE([AC_PROG_LEX], [], [AC_PROG_LEX($@)])
17 dnl Do not dnl on previous line, or output has "fiif".
18 if test "$LEX" = :; then
19 LEX=${am_missing_run}flex