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- ## Replacement for AC_PROG_LEX. -*- Autoconf -*-
- ## by Alexandre Oliva <oliva@dcc.unicamp.br>
- # Copyright (C) 1998-2017 Free Software Foundation, Inc.
- #
- # This file is free software; the Free Software Foundation
- # gives unlimited permission to copy and/or distribute it,
- # with or without modifications, as long as this notice is preserved.
- # AM_PROG_LEX
- # -----------
- # Autoconf leaves LEX=: if lex or flex can't be found. Change that to a
- # "missing" invocation, for better error output.
- AC_DEFUN([AM_PROG_LEX],
- [AC_PREREQ([2.50])dnl
- AC_REQUIRE([AM_MISSING_HAS_RUN])dnl
- AC_REQUIRE([AC_PROG_LEX])dnl
- if test "$LEX" = :; then
- LEX=${am_missing_run}flex
- fi])
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