pf ("\n");
pf ("/* same as POSIX \"struct timespec\" -- always defined */\n");
-#ifdef HAVE_STRUCT_TIMESPEC
+#ifdef HAVE_SYSTEM_STRUCT_TIMESPEC
pf ("typedef struct timespec scm_t_timespec;\n");
#else
pf ("/* POSIX.4 structure for a time value. This is like a `struct timeval'"