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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 306a0057d..56c4cfb13 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1291,6 +1291,7 @@ AC_CHECK_FUNCS(strftime strptime mktime timelocal \
 	       pcre_compile pcre_study pcre_exec \
 	       nl_langinfo \
 	       erand48 open_memstream \
+	       posix_openpt \
 	       wctomb iconv \
 	       grantpt unlockpt ptsname \
 	       htons ntohs \