diff --git a/ncurses/SigAction.h b/ncurses/SigAction.h
new file mode 100644
index 0000000..5dfde64
--- /dev/null
+++ b/ncurses/SigAction.h
@@ -0,0 +1,109 @@
+/****************************************************************************
+ * Copyright (c) 1998,2000 Free Software Foundation, Inc.                   *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
+ *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
+ ****************************************************************************/
+
+/*
+ * $Id: SigAction.h,v 1.8 2005/08/06 20:05:32 tom Exp $
+ *
+ * This file exists to handle non-POSIX systems which don't have <unistd.h>,
+ * and usually no sigaction() nor <termios.h>
+ */
+
+#ifndef _SIGACTION_H
+#define _SIGACTION_H
+
+#ifndef HAVE_SIGACTION
+#define HAVE_SIGACTION 0
+#endif
+
+#ifndef HAVE_SIGVEC
+#define HAVE_SIGVEC 0
+#endif
+
+#if HAVE_SIGACTION
+
+#if !HAVE_TYPE_SIGACTION
+typedef struct sigaction sigaction_t;
+#endif
+
+#else	/* !HAVE_SIGACTION */
+
+#if HAVE_SIGVEC
+
+#undef  SIG_BLOCK
+#define SIG_BLOCK       00
+
+#undef  SIG_UNBLOCK
+#define SIG_UNBLOCK     01
+
+#undef  SIG_SETMASK
+#define SIG_SETMASK     02
+
+ 	/*
+	 * <bsd/signal.h> is in the Linux 1.2.8 + gcc 2.7.0 configuration,
+	 * and is useful for testing this header file.
+	 */
+#if HAVE_BSD_SIGNAL_H
+#include <bsd/signal.h>
+#endif
+
+typedef struct sigvec sigaction_t;
+
+#define sigset_t _nc_sigset_t
+typedef unsigned long sigset_t;
+
+#undef  sa_mask
+#define sa_mask sv_mask
+#undef  sa_handler
+#define sa_handler sv_handler
+#undef  sa_flags
+#define sa_flags sv_flags
+
+#undef  sigaction
+#define sigaction   _nc_sigaction
+#undef  sigprocmask
+#define sigprocmask _nc_sigprocmask
+#undef  sigemptyset
+#define sigemptyset _nc_sigemptyset
+#undef  sigsuspend
+#define sigsuspend  _nc_sigsuspend
+#undef  sigdelset
+#define sigdelset   _nc_sigdelset
+#undef  sigaddset
+#define sigaddset   _nc_sigaddset
+
+/* tty/lib_tstp.c is the only user */
+#include <base/sigaction.c>
+
+#endif /* HAVE_SIGVEC */
+#endif /* HAVE_SIGACTION */
+#endif /* !defined(_SIGACTION_H) */