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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 983bf540f..52efa5161 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1761,6 +1761,7 @@ AC_CHECK_FUNCS( strtoll \
getprotobyname \
getrlimit \
setrlimit \
+ isblank \
fork,
dnl if found
[],