#include "gras_config.h"
-#include <errno.h>
-#include <sys/time.h> /* struct timeval */
-#include <sys/types.h>
+#ifdef HAVE_ERRNO_H
+# include <errno.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
/****
**** Networking
# include "xbt/context_win32.h" /* Manual reimplementation for prehistoric platforms */
#endif
+
#endif /* GRAS_PORTABLE_H */