---
 src/chains.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- src/chains.c.orig
+++ src/chains.c
@@ -168,6 +168,12 @@ static int is_vbi_device(const char *pat
       return 0;
 }
 
+/*
+ * Newer glibc defines an open() macro that checks the optional third
+ * argument, but calls the open() _function_ in the end, so undefining
+ * it here should be safe.
+ */
+#undef open
 int open(const char *pathname, int flags, ...)
 {
    va_list args;