+// select-related stuff
+
+#if !defined(mingw32_HOST_OS)
+INLINE void hsFD_CLR(int fd, fd_set *fds) { FD_CLR(fd, fds); }
+INLINE int hsFD_ISSET(int fd, fd_set *fds) { return FD_ISSET(fd, fds); }
+INLINE void hsFD_SET(int fd, fd_set *fds) { FD_SET(fd, fds); }
+INLINE int sizeof_fd_set(void) { return sizeof(fd_set); }
+extern void hsFD_ZERO(fd_set *fds);
+#endif
+
+// gettimeofday()-related
+
+#if !defined(mingw32_HOST_OS)
+#define TICK_FREQ 50
+
+INLINE HsInt sizeofTimeVal(void) { return sizeof(struct timeval); }
+
+INLINE HsInt getTicksOfDay(void)
+{
+ struct timeval tv;
+ gettimeofday(&tv, (struct timezone *) NULL);
+ return (tv.tv_sec * TICK_FREQ +
+ tv.tv_usec * TICK_FREQ / 1000000);
+}
+
+INLINE void setTimevalTicks(struct timeval *p, HsInt ticks)
+{
+ p->tv_sec = ticks / TICK_FREQ;
+ p->tv_usec = (ticks % TICK_FREQ) * (1000000 / TICK_FREQ);
+}
+#endif // !defined(mingw32_HOST_OS)
+
+// Directory-related
+
+#if defined(mingw32_HOST_OS)
+
+/* Make sure we've got the reqd CSIDL_ constants in scope;
+ * w32api header files are lagging a bit in defining the full set.
+ */
+#if !defined(CSIDL_APPDATA)
+#define CSIDL_APPDATA 0x001a
+#endif
+#if !defined(CSIDL_PERSONAL)
+#define CSIDL_PERSONAL 0x0005
+#endif
+#if !defined(CSIDL_PROFILE)
+#define CSIDL_PROFILE 0x0028
+#endif
+#if !defined(CSIDL_WINDOWS)
+#define CSIDL_WINDOWS 0x0024
+#endif
+
+INLINE int __hscore_CSIDL_PROFILE() { return CSIDL_PROFILE; }
+INLINE int __hscore_CSIDL_APPDATA() { return CSIDL_APPDATA; }
+INLINE int __hscore_CSIDL_WINDOWS() { return CSIDL_WINDOWS; }
+INLINE int __hscore_CSIDL_PERSONAL() { return CSIDL_PERSONAL; }
+#endif
+
+/* ToDo: write a feature test that doesn't assume 'environ' to
+ * be in scope at link-time. */
+extern char** environ;
+INLINE char **__hscore_environ() { return environ; }
+