#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 <fcntl.h>
#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
+# include <sys/stat.h>
+#endif
+
+#ifndef O_BINARY
+# define O_BINARY 0
#endif
/****
**** Time handling
****/
-#if TIME_WITH_SYS_TIME
+#ifdef TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
#define sleep _sleep /* else defined in stdlib.h */
#endif
+/****
+ **** Contexts
+ ****/
+
+#ifdef HAVE_UCONTEXT_H
+# include <ucontext.h>
+#else
+# include "xbt/context_win32.h" /* Manual reimplementation for prehistoric platforms */
+#endif
+
#endif /* GRAS_PORTABLE_H */