From 10232af80816ac644f8b9d6659bf113026672f53 Mon Sep 17 00:00:00 2001 From: Akim Demaille Date: Tue, 10 Apr 2012 21:36:23 +0200 Subject: [PATCH 4/4] build: require Flex. * configure.ac: Require Flex. --- configure.ac | 3 +++ 1 file changed, 3 insertions(+) diff --git a/configure.ac b/configure.ac index 688e18e..704f5aa 100644 --- a/configure.ac +++ b/configure.ac @@ -114,6 +114,9 @@ AC_SUBST([YACC_LIBRARY]) # Checks for programs. AC_PROG_LEX +if test "$FLEX" != yes; then + AC_MSG_ERROR([Flex is required]) +fi AC_PROG_YACC AC_PROG_RANLIB AC_PROG_GNU_M4 -- 1.7.9.5