Build system reworked to one global Makefile with includes and no nesting

Also removed the lib-dir merging with sysdep. Updated #include's
accordingly.

Fixed make doc on recent Debian together with moving generated doc into
objdir.

Moved Makefile.in into root dir

Retired all.o and birdlib.a
Linking the final binaries directly from all the .o files.

sysdep/unix/Makefile

@@ -0,0 +1,5 @@
+src := io.c krt.c log.c main.c random.c
+obj := $(src-o-files)
+$(all-daemon)
+$(cf-local)
+$(conf-y-targets): $(s)krt.Y

sysdep/unix/Modules

@@ -1,12 +0,0 @@
-log.c
-main.c
-timer.h
-io.c
-unix.h
-endian.h
-config.Y
-random.c
-
-krt.c
-krt.h
-krt.Y

sysdep/unix/config.Y

@@ -8,7 +8,7 @@
 
 CF_HDR
 
-#include "lib/unix.h"
+#include "sysdep/unix/unix.h"
 #include <stdio.h>
 
 CF_DECLS

sysdep/unix/io.c

@@ -31,14 +31,14 @@
 #include "nest/bird.h"
 #include "lib/lists.h"
 #include "lib/resource.h"
-#include "lib/timer.h"
+#include "sysdep/unix/timer.h"
 #include "lib/socket.h"
 #include "lib/event.h"
 #include "lib/string.h"
 #include "nest/iface.h"
 
-#include "lib/unix.h"
-#include "lib/sysio.h"
+#include "sysdep/unix/unix.h"
+#include CONFIG_INCLUDE_SYSIO_H
 
 /* Maximum number of calls of tx handler for one socket in one
  * select iteration. Should be small enough to not monopolize CPU by

sysdep/unix/krt.Y

@@ -8,7 +8,7 @@
 
 CF_HDR
 
-#include "lib/krt.h"
+#include "sysdep/unix/krt.h"
 
 CF_DEFINES
 

sysdep/unix/krt.c

@@ -56,7 +56,7 @@
 #include "nest/route.h"
 #include "nest/protocol.h"
 #include "filter/filter.h"
-#include "lib/timer.h"
+#include "sysdep/unix/timer.h"
 #include "conf/conf.h"
 #include "lib/string.h"
 

sysdep/unix/krt.h

@@ -15,7 +15,8 @@ struct krt_proto;
 struct kif_config;
 struct kif_proto;
 
-#include "lib/krt-sys.h"
+#include "sysdep/config.h"
+#include CONFIG_INCLUDE_KRTSYS_H
 
 /* Flags stored in net->n.flags, rest are in nest/route.h */
 
@@ -111,7 +112,7 @@ struct kif_proto {
   struct kif_state sys;		/* Sysdep state */
 };
 
-struct kif_proto *kif_proto;
+extern struct kif_proto *kif_proto;
 
 #define KIF_CF ((struct kif_config *)p->p.cf)
 

sysdep/unix/log.c

@@ -26,7 +26,7 @@
 #include "nest/mrtdump.h"
 #include "lib/string.h"
 #include "lib/lists.h"
-#include "lib/unix.h"
+#include "sysdep/unix/unix.h"
 
 static FILE *dbgf;
 static list *current_log_list;

sysdep/unix/main.c

@@ -69,7 +69,7 @@ async_dump(void)
  */
 
 #ifdef CONFIG_RESTRICTED_PRIVILEGES
-#include "lib/syspriv.h"
+#include CONFIG_INCLUDE_SYSPRIV_H
 #else
 
 static inline void
@@ -567,6 +567,10 @@ sysdep_shutdown_done(void)
  *	Signals
  */
 
+volatile int async_config_flag;
+volatile int async_dump_flag;
+volatile int async_shutdown_flag;
+
 static void
 handle_sighup(int sig UNUSED)
 {

sysdep/unix/unix.h

@@ -91,9 +91,9 @@ int sockaddr_read(sockaddr *sa, int af, ip_addr *a, struct iface **ifa, uint *po
 #define SUN_LEN(ptr) ((size_t) (((struct sockaddr_un *) 0)->sun_path) + strlen ((ptr)->sun_path))
 #endif
 
-volatile int async_config_flag;
-volatile int async_dump_flag;
-volatile int async_shutdown_flag;
+extern volatile int async_config_flag;
+extern volatile int async_dump_flag;
+extern volatile int async_shutdown_flag;
 
 void io_init(void);
 void io_loop(void);