From 417a3d26a0dd0ba77565fc8b5c19449a16d7fd48 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Fri, 6 Mar 2009 02:41:40 +0000
Subject: [PATCH] add an option to use sig{set,long}jmp and default it to on
 for linux systems

---
 generic.h | 1 +
 netcat.c  | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/generic.h b/generic.h
index dc92cf9..0799866 100644
--- a/generic.h
+++ b/generic.h
@@ -284,6 +284,7 @@ There's a BIG swamp lurking where network code of any sort lives.
 #undef HAVE_SYSINFO
 #undef HAVE_SELECT_H
 #undef HAVE_TTYENT_H
+#define HAVE_SIGSETJMP
 #define HAVE_SOCKLEN_T
 #endif /* linux */
 
diff --git a/netcat.c b/netcat.c
index cef4fd5..e4194ec 100644
--- a/netcat.c
+++ b/netcat.c
@@ -102,6 +102,14 @@
 #define socklen_t int
 #endif
 
+#ifdef HAVE_SIGSETJMP
+#define jmp_buf sigjmp_buf
+#undef setjmp
+#define setjmp(buf) sigsetjmp(buf,1)
+#undef longjmp
+#define longjmp siglongjmp
+#endif
+
 struct host_poop {
   char name[MAXHOSTNAMELEN];	/* dns name */
   char addrs[8][24];		/* ascii-format IP addresses */