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-rw-r--r--configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index 5cb82a8..765eae1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -167,7 +167,7 @@ CTNG_PROG_VERSION_REQ_ANY([MAKE],
[make_3_81_or_newer])
# Check other companion tools that we may or may not build.
-CTNG_PROG_VERSION([LIBTOOL],
+CTNG_PROG_VERSION_REQ_STRICT([LIBTOOL],
[GNU libtool >= 2.4],
[libtool],
[glibtool libtool],