Parse bison output to prevent LexSetRegExp mistakes.

[cycript.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 3900105a4077ee244d874aa2dd55b46b9434413b..5a558e894b12b128ad3b43f7c60cad7d3eb4c82b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -31,7 +31,7 @@ CY_CHECK_PROGS_VERSION([BISON], [bison], [bison],
        [-V | $SED -e '1 s/^bison (GNU Bison) \(.*\)$/\1/p;d'], [2.3])
 AC_ARG_VAR([FLEX], [the fast lexical analyser generator])
 CY_CHECK_PROGS_VERSION([FLEX], [flex], [flex],
-       [--version | $SED -e '1 s/^.* \(@<:@0-9.@:>@*\)$/\1/p;d'], [2.5.33])
+       [--version | $SED -e '1 s/^@<:@^0-9.@:>@* \(@<:@0-9.@:>@*\).*$/\1/p;d'], [2.5.33])
 AC_ARG_VAR([GPERF], [perfect hash function generator])
 CY_CHECK_PROGS_VERSION([GPERF], [gperf], [gperf],
        [--version | $SED -e '1 s/^.* \(@<:@0-9.@:>@*\)$/\1/p;d'], [3.0.3])