diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/configure.ac b/configure.ac index 1b027d2e..78a39e16 100644 --- a/configure.ac +++ b/configure.ac @@ -6,12 +6,17 @@ AC_CONFIG_HEADER([config.h]) dnl --------------------------------------------------------------------- dnl Lex & Bison language parser. dnl --------------------------------------------------------------------- -AC_PROG_LEX +AC_PROG_LEX([flex]) AC_PROG_YACC -AS_IF([test "x${LEX}" != "xflex" ], [AC_MSG_ERROR( "Failed to find flex")]) AS_IF([test "x${YACC}" != "xbison -y" ], [AC_MSG_ERROR( "Failed to find bison")]) +m4_include([m4/ax_prog_flex_version.m4]) +m4_include([m4/ax_compare_version.m4]) +AC_SUBST([FLEX], [${LEX}]) +AX_PROG_FLEX_VERSION([2.5.39],,AC_MSG_ERROR("Require flex version 2.5.39 or higher")) +# + dnl --------------------------------------------------------------------- dnl Setup automake to be silent and in foreign mode. dnl We want xz distribution |