diff --git a/config-mac.h b/config-mac.h
index a0b52f489..8915defa6 100644
--- a/config-mac.h
+++ b/config-mac.h
@@ -36,4 +36,6 @@
 #define HAVE_RAND_STATUS	1
 #define HAVE_RAND_EGD		1
 
-#include <GUSIExtra.h>
+#define HAVE_FIONBIO        1
+
+#include "GUSIExtra.h"
diff --git a/src/config-mac.h b/src/config-mac.h
new file mode 100644
index 000000000..949a22f64
--- /dev/null
+++ b/src/config-mac.h
@@ -0,0 +1,6 @@
+#include "GUSICommandLine.h"
+
+#define main(x,y) curl_main(x,y)
+
+/* we provide our own strdup prototype */
+char *strdup(const char *s1);