From e79fdcb194f81eaf40d6f973d413bc45c38c65ce Mon Sep 17 00:00:00 2001
From: axel <axel@liljencrantz.se>
Date: Mon, 31 Jul 2006 06:55:44 +1000
Subject: [PATCH] Provide fallback is struct winsize is not defined

darcs-hash:20060730205544-ac50b-26f34eb04b56924baa34f560fd274cf38413b5f5.gz
---
 common.c     |  5 +++++
 configure.ac | 16 ++++++++++++++++
 fallback.h   | 10 ++++++++++
 3 files changed, 31 insertions(+)

diff --git a/common.c b/common.c
index cd7323440..80eaf1447 100644
--- a/common.c
+++ b/common.c
@@ -1412,10 +1412,15 @@ int acquire_lock_file( const char *lockfile, const int timeout, int force )
 
 void common_handle_winch( int signal )
 {
+#ifdef HAVE_WINSIZE
 	if (ioctl(1,TIOCGWINSZ,&termsize)!=0)
 	{
 		return;
 	}
+#else
+	termsize.ws_col = 80;
+	termsizews_row = 24;
+#endif
 }
 
 int common_get_width()
diff --git a/configure.ac b/configure.ac
index e4ce5d353..4c2adcc66 100644
--- a/configure.ac
+++ b/configure.ac
@@ -286,6 +286,22 @@ else
 	AC_MSG_RESULT(no)
 fi
 
+
+# Check if struct winsize exists
+AC_MSG_CHECKING([if struct winsize exists])
+AC_LINK_IFELSE(
+	[AC_LANG_PROGRAM([
+#include <sys/types.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+
+#ifdef HAVE_SIGINFO_H
+#include <siginfo.h>
+#endif],
+	[struct winsize termsize; ioctl(1,TIOCGWINSZ,&termsize);])], 
+	[AC_MSG_RESULT(yes); AC_DEFINE([HAVE_WINSIZE], [1], [Define to 1 if the winsize struct exists])], 
+	AC_MSG_RESULT(no))
+
 # If we have a fwprintf in libc, test that it actually works. As of
 # March 2006, it is broken under Dragonfly BSD.
 if test "$ac_cv_func_fwprintf" = yes; then
diff --git a/fallback.h b/fallback.h
index 6bfaed635..d9a119a82 100644
--- a/fallback.h
+++ b/fallback.h
@@ -43,6 +43,16 @@ typedef int tputs_arg_t;
 typedef char tputs_arg_t;
 #endif
 
+#ifndef HAVE_WINSIZE
+struct winsize 
+{
+	unsigned short ws_row;	
+	unsigned short ws_col;
+}
+	;
+
+#endif
+
 #ifdef TPUTS_KLUDGE
 
 /**