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-rw-r--r--configure.ac4
1 files changed, 4 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 7333e03c047f..0eb7d7632596 100644
--- a/configure.ac
+++ b/configure.ac
@@ -115,6 +115,10 @@ AC_CHECK_HEADERS([sys/mount.h], [], [],
 ])
 
 
+# Check for vfork.
+AC_FUNC_FORK()
+
+
 # Check for lutimes, optionally used for changing the mtime of
 # symlinks.
 AC_CHECK_FUNCS([lutimes])