Put client on a stony ground. The whole client is going to be system-specific

(the current version UNIX-specific) anyway, so it's useless to try splitting it
to sysdep and generic part. Instead of this, configure script decides (based on
system type and user's wish) what (if any) client should be built and what
autoconfiguration it requires. Also, the client provides its own die/bug/...
functions.

client/Makefile

@@ -1,4 +1,4 @@
-source=client.c
+source=client.c commands.c util.c
 root-rel=../
 dir-name=client
 

client/client.c

@@ -6,21 +6,48 @@
  *	Can be freely distributed and used under the terms of the GNU GPL.
  */
 
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+
 #include "nest/bird.h"
+#include "lib/resource.h"
 #include "client/client.h"
 
-struct cmd_info {
-  char *command;
-  char *args;
-  char *help;
-};
+static char *opt_list = "";
 
-static struct cmd_info command_table[] = {
-#include "conf/commands.h"
-};
+static void
+usage(void)
+{
+  fprintf(stderr, "Usage: birdc\n");
+  exit(1);
+}
+
+static void
+parse_args(int argc, char **argv)
+{
+  int c;
+
+  while ((c = getopt(argc, argv, opt_list)) >= 0)
+    switch (c)
+      {
+      default:
+	usage();
+      }
+  if (optind < argc)
+    usage();
+}
 
 int
 main(int argc, char **argv)
 {
-  return client_main(argc, argv);	/* Call sysdep code */
+#ifdef HAVE_LIBDMALLOC
+  if (!getenv("DMALLOC_OPTIONS"))
+    dmalloc_debug(0x2f03d00);
+#endif
+
+  parse_args(argc, argv);
+
+  bug("Not implemented yet!");
 }

client/client.h

@@ -1,11 +1,7 @@
 /*
  *	BIRD Client
  *
- *	(c) 1999 Martin Mares <mj@ucw.cz>
+ *	(c) 1999--2000 Martin Mares <mj@ucw.cz>
  *
  *	Can be freely distributed and used under the terms of the GNU GPL.
  */
-
-/* sysdep code */
-
-int client_main(int argc, char **argv);

client/commands.c

@@ -0,0 +1,20 @@
+/*
+ *	BIRD Client -- Command Handling
+ *
+ *	(c) 1999--2000 Martin Mares <mj@ucw.cz>
+ *
+ *	Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#include "nest/bird.h"
+#include "client/client.h"
+
+struct cmd_info {
+  char *command;
+  char *args;
+  char *help;
+};
+
+struct cmd_info command_table[] = {
+#include "conf/commands.h"
+};

client/util.c

@@ -0,0 +1,40 @@
+/*
+ *	BIRD Client -- Utility Functions
+ *
+ *	(c) 1999--2000 Martin Mares <mj@ucw.cz>
+ *
+ *	Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+#include "nest/bird.h"
+#include "client/client.h"
+
+/* Client versions of logging functions */
+
+void
+bug(char *msg, ...)
+{
+  va_list args;
+
+  va_start(args, msg);
+  fputs("Internal error: ", stderr);
+  vfprintf(stderr, msg, args);
+  fputc('\n', stderr);
+  exit(1);
+}
+
+void
+die(char *msg, ...)
+{
+  va_list args;
+
+  va_start(args, msg);
+  vfprintf(stderr, msg, args);
+  fputc('\n', stderr);
+  exit(1);
+}