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-rw-r--r--configure.ac1
1 files changed, 1 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index c76c2a0f3..38b968878 100644
--- a/configure.ac
+++ b/configure.ac
@@ -428,6 +428,7 @@ AC_CHECK_FUNCS([ \
sysinfo \
timegm \
usleep \
+ vwarnx \
warn \
warnx \
])