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-rw-r--r--win32/win32.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/win32/win32.h b/win32/win32.h
index 672162c5cb..b2ad2a33ea 100644
--- a/win32/win32.h
+++ b/win32/win32.h
@@ -183,6 +183,7 @@ extern char *rb_w32_join_argv(char *, char *const *);
extern int rb_w32_spawn(int, const char *, const char*);
extern int rb_w32_aspawn(int, const char *, char *const *);
extern int kill(int, int);
+extern int fcntl(int, int, ...);
extern pid_t rb_w32_getpid(void);
#ifdef __BORLANDC__
@@ -324,6 +325,9 @@ extern char *rb_w32_strerror(int);
#define ESTALE WSAESTALE
#define EREMOTE WSAEREMOTE
+#define F_SETFL 1
+#define O_NONBLOCK 1
+
#ifdef accept
#undef accept
#endif