diff -r 000000000000 -r 76b1f169d9fe mingw-5.1.4/win32/include/signal.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mingw-5.1.4/win32/include/signal.h	Fri Apr 03 17:16:45 2009 +0100
@@ -0,0 +1,98 @@
+/* 
+ * signal.h
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is a part of the mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER within the package.
+ *
+ * A way to set handlers for exceptional conditions (also known as signals).
+ *
+ */
+
+#ifndef	_SIGNAL_H_
+#define	_SIGNAL_H_
+
+/* All the headers include this file. */
+#include <_mingw.h>
+
+/*
+ * The actual signal values. Using other values with signal
+ * produces a SIG_ERR return value.
+ *
+ * NOTE: SIGINT is produced when the user presses Ctrl-C.
+ *       SIGILL has not been tested.
+ *       SIGFPE doesn't seem to work?
+ *       SIGSEGV does not catch writing to a NULL pointer (that shuts down
+ *               your app; can you say "segmentation violation core dump"?).
+ *       SIGTERM comes from what kind of termination request exactly?
+ *       SIGBREAK is indeed produced by pressing Ctrl-Break.
+ *       SIGABRT is produced by calling abort.
+ * TODO: The above results may be related to not installing an appropriate
+ *       structured exception handling frame. Results may be better if I ever
+ *       manage to get the SEH stuff down.
+ */
+#define	SIGINT		2	/* Interactive attention */
+#define	SIGILL		4	/* Illegal instruction */
+#define	SIGFPE		8	/* Floating point error */
+#define	SIGSEGV		11	/* Segmentation violation */
+#define	SIGTERM		15	/* Termination request */
+#define SIGBREAK	21	/* Control-break */
+#define	SIGABRT		22	/* Abnormal termination (abort) */
+
+#define NSIG 23     /* maximum signal number + 1 */
+
+#ifndef	RC_INVOKED
+
+#ifndef _SIG_ATOMIC_T_DEFINED
+typedef int sig_atomic_t;
+#define _SIG_ATOMIC_T_DEFINED
+#endif
+
+/*
+ * The prototypes (below) are the easy part. The hard part is figuring
+ * out what signals are available and what numbers they are assigned
+ * along with appropriate values of SIG_DFL and SIG_IGN.
+ */
+
+/*
+ * A pointer to a signal handler function. A signal handler takes a
+ * single int, which is the signal it handles.
+ */
+typedef	void (*__p_sig_fn_t)(int);
+
+/*
+ * These are special values of signal handler pointers which are
+ * used to send a signal to the default handler (SIG_DFL), ignore
+ * the signal (SIG_IGN), indicate an error return (SIG_ERR),
+ * get an error (SIG_SGE), or acknowledge (SIG_ACK).
+ */
+#define	SIG_DFL	((__p_sig_fn_t) 0)
+#define	SIG_IGN	((__p_sig_fn_t) 1)
+#define	SIG_ERR ((__p_sig_fn_t) -1)
+#define SIG_SGE ((__p_sig_fn_t) 3)
+#define SIG_ACK ((__p_sig_fn_t) 4)
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/*
+ * Call signal to set the signal handler for signal sig to the
+ * function pointed to by handler. Returns a pointer to the
+ * previous handler, or SIG_ERR if an error occurs. Initially
+ * unhandled signals defined above will return SIG_DFL.
+ */
+_CRTIMP __p_sig_fn_t __cdecl __MINGW_NOTHROW	signal(int, __p_sig_fn_t);
+
+/*
+ * Raise the signal indicated by sig. Returns non-zero on success.
+ */
+_CRTIMP int __cdecl __MINGW_NOTHROW	raise (int);
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* Not RC_INVOKED */
+
+#endif	/* Not _SIGNAL_H_ */
+