#ifdef SET_UID
-# include <sys/param.h>
-# include <sys/file.h>
-
-# ifdef linux
-# include <sys/file.h>
-# endif
-
-# include <pwd.h>
-
-# include <unistd.h>
-
-# include <sys/stat.h>
-
-# ifdef si_ptr
-/*
- * Linux (at least Debian 10) defines this to access a field in siginfo_t
- * (see the sigaction(2) man page). Get rid of it since Hengband isn't
- * using siginfo_t and does use si_ptr in other contexts.
- */
-# undef si_ptr
-# endif
+#include <sys/param.h>
+#include <sys/file.h>
+#include <pwd.h>
+#include <unistd.h>
+#include <sys/stat.h>
#endif /* SET_UID */