+#if !STD_GETPWUID
+#define _POSIX_PTHREAD_SEMANTICS 1
+#endif
+#if !STD_ASCTIME
+#define _POSIX_PTHREAD_SEMANTICS 1
+#endif
+
+#if !HAVE_CANONICALIZE_FILE_NAME
+/* we only call this function from C, and this makes testing easier */
+#ifndef __cplusplus
+char *
+canonicalize_file_name (const char *path);
+#endif
+#endif
+