patch to use strerror in gdbserver

[Philip Blundell]

Some of the gdbserver code has trouble on Linux with GNU libc 2.1 because it 
redeclares sys_errlist in a way that conflicts with the library headers.  
Since libiberty provides strerror on platforms that don't have it, we might as 
well make use of it.

1999-04-11  Philip Blundell  <philb@gnu.org>

	* gdbserver/utils.c (perror_with_name): Use strerror rather than
	sys_errlist.  Include <errno.h>, don't declare errno directly.
	* gdbserver/gdbreplay.c (perror_with_name): Likewise.
	
diff -u --recursive --new-file /home/phil/gdb/clean/gdb-4.17/gdb/gdbserver/gdbreplay.c gdb/gdbserver/gdbreplay.c
--- /home/phil/gdb/clean/gdb-4.17/gdb/gdbserver/gdbreplay.c	Sun Apr 11 21:57:15 1999
+++ gdb/gdbserver/gdbreplay.c	Sun Apr 11 19:16:26 1999
@@ -27,6 +27,7 @@
 #include <signal.h>
 #include <ctype.h>
 #include <fcntl.h>
+#include <errno.h>
 
 /* Sort of a hack... */
 #define EOL (EOF - 1)
@@ -41,20 +42,15 @@
 perror_with_name (string)
      char *string;
 {
-  extern int sys_nerr;
-  extern char *sys_errlist[];
-  extern int errno;
-  char *err;
+  char *err = strerror (errno);
   char *combined;
 
-  err = (errno < sys_nerr) ? sys_errlist[errno] : "unknown error";
   combined = (char *) alloca (strlen (err) + strlen (string) + 3);
   strcpy (combined, string);
   strcat (combined, ": ");
   strcat (combined, err);
-  fprintf (stderr, "\n%s.\n", combined);
-  fflush (stderr);
-  exit (1);
+
+  error ("%s.", combined);
 }
 
 static void
diff -u --recursive --new-file /home/phil/gdb/clean/gdb-4.17/gdb/gdbserver/utils.c gdb/gdbserver/utils.c
--- /home/phil/gdb/clean/gdb-4.17/gdb/gdbserver/utils.c	Sat Aug  9 05:49:48 1997
+++ gdb/gdbserver/utils.c	Sun Apr 11 15:34:56 1999
@@ -20,6 +20,7 @@
 #include "server.h"
 #include <stdio.h>
 #include <string.h>
+#include <errno.h>
 
 /* Generally useful subroutines used throughout the program.  */
 
@@ -31,16 +32,8 @@
 perror_with_name (string)
      char *string;
 {
-  extern int sys_nerr;
-  extern char *sys_errlist[];
-  extern int errno;
-  char *err;
+  char *err = strerror (errno);
   char *combined;
-
-  if (errno < sys_nerr)
-    err = sys_errlist[errno];
-  else
-    err = "unknown error";
 
   combined = (char *) alloca (strlen (err) + strlen (string) + 3);
   strcpy (combined, string);