diff options
| -rw-r--r-- | configure.ac | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index c5e5d64aa..92a60ce81 100644 --- a/configure.ac +++ b/configure.ac @@ -2235,7 +2235,16 @@ dnl -------------------------------------- dnl checking for flex and bison dnl -------------------------------------- -AM_PROG_LEX +dnl autoconf 2.69 AC_PROG_LEX has no parameters +dnl autoconf 2.70 AC_PROG_LEX prints a deprecation warning without params +m4_if(m4_version_compare(m4_defn([AC_AUTOCONF_VERSION]), [2.70]), [-1], [dnl + dnl autoconf < 2.70 + AC_PROG_LEX +], [ + dnl autoconf >= 2.70 + AC_PROG_LEX([noyywrap]) +]) + AC_MSG_CHECKING([version of flex]) frr_ac_flex_version="$(eval $LEX -V | grep flex | head -n 1)" frr_ac_flex_version="${frr_ac_flex_version##* }" |