Build: Bump gettext version requirement to 0.18.

Otherwise too old version of m4/lib-link.m4 gets included
when autoreconf -fi is run.

diff --git a/configure.ac b/configure.ac
index f0ccef94cce387d7127264a60d0a3ab21080f30b..b02dd4160ed2dab141a30bd0c123298ba6b0a62e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -460,7 +460,7 @@ AM_CONDITIONAL([COND_SHARED], [test "x$enable_shared" != xno])
 
 echo
 echo "Initializing gettext:"
-AM_GNU_GETTEXT_VERSION([0.16.1])
+AM_GNU_GETTEXT_VERSION([0.18])
 AM_GNU_GETTEXT([external])
 
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