#include <sys/syscall.h>
#elif defined(__linux__) || defined(__GLIBC__)
#include <syscall.h>
+
+#elif defined(__CYGWIN__) || defined(__APPLE__)
+/* Don't include anything on Cygwin or MacOSX. */
+
#else
#error "Add platform support to urcu/syscall-compat.h"
#endif