X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=configure.ac;fp=configure.ac;h=19ad34201af9e1358a572d3dd01837b8d924cd79;hb=13b1be7975df906a64050f789ad03e8b940ebb49;hp=936cb1c7cf5482c5ed230ecfb1a92837e0d0755b;hpb=f14c18f4e488720f27bf19cbf2974f5d069934a0;p=lttng-tools.git

diff --git a/configure.ac b/configure.ac
index 936cb1c7c..19ad34201 100644
--- a/configure.ac
+++ b/configure.ac
@@ -367,6 +367,10 @@ if test ! -f "$srcdir/src/lib/lttng-ctl/filter/filter-lexer.c"; then
 		AC_MSG_ERROR([[flex not found and is required when building from git.
 		Please install flex]])
 	fi
+	AC_PATH_PROG([FLEX],[flex])
+	AX_PROG_FLEX_VERSION([2.5.35], [],[
+		AC_MSG_ERROR([[Flex >= 2.5.35 is required when building from git]])
+	])
 fi
 
 CFLAGS="-Wall $CFLAGS -g -fno-strict-aliasing"