More -Wmissing-variable-declarations fixes.

In addition to adding missing `static' keywords:
- bin/dd: Pull in `extern.h' to guarantee consistency with source file.
- libexec/rpc.rusersd: Move shared globals into an extern.h.
- libexec/talkd: Move `debug' and `hostname' into extern.h.
- usr.bin/cksum: Put counters in extern.h, as they are used by ckdist/mtree.
- usr.bin/m4: Move `end_result' into extern.h.
- usr.sbin/services_mkdb: Move shared globals into an extern.h.

4 files changed, 42 insertions, 6 deletions

diff --git a/libexec/rpc.rusersd/Makefile b/libexec/rpc.rusersd/Makefile
index 6305343..df2be37 100644
--- a/libexec/rpc.rusersd/Makefile
+++ b/libexec/rpc.rusersd/Makefile
@@ -1,7 +1,7 @@
 # $FreeBSD$
 
 PROG =	rpc.rusersd
-SRCS =	rusersd.c rusers_proc.c
+SRCS =	rusersd.c rusers_proc.c extern.h
 MAN =	rpc.rusersd.8
 
 DPADD=	${LIBRPCSVC} ${LIBUTIL}
diff --git a/libexec/rpc.rusersd/extern.h b/libexec/rpc.rusersd/extern.h
new file mode 100644
index 0000000..b1a8309
--- /dev/null
+++ b/libexec/rpc.rusersd/extern.h
@@ -0,0 +1,38 @@
+/*-
+ * Copyright (c) 1993, John Brezak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+extern int from_inetd;
+
+void rusers_service(struct svc_req *, SVCXPRT *);
diff --git a/libexec/rpc.rusersd/rusers_proc.c b/libexec/rpc.rusersd/rusers_proc.c
index 6b34fa7..ff2ebc4 100644
--- a/libexec/rpc.rusersd/rusers_proc.c
+++ b/libexec/rpc.rusersd/rusers_proc.c
@@ -53,6 +53,8 @@ static const char rcsid[] =
 #endif
 #include <rpcsvc/rnusers.h>
 
+#include "extern.h"
+
 #ifndef _PATH_DEV
 #define _PATH_DEV "/dev"
 #endif
@@ -61,10 +63,6 @@ static utmpidle utmp_idle[MAXUSERS];
 static utmp old_utmp[MAXUSERS];
 static struct utmpx utmp_list[MAXUSERS];
 
-extern int from_inetd;
-
-void rusers_service(struct svc_req *, SVCXPRT *);
-
 #ifdef XIDLE
 static Display *dpy;
 
diff --git a/libexec/rpc.rusersd/rusersd.c b/libexec/rpc.rusersd/rusersd.c
index 009bbfd..0ad4686 100644
--- a/libexec/rpc.rusersd/rusersd.c
+++ b/libexec/rpc.rusersd/rusersd.c
@@ -43,7 +43,7 @@ static const char rcsid[] =
 #include <syslog.h>
 #include <rpcsvc/rnusers.h>
 
-extern void rusers_service(struct svc_req *, SVCXPRT *);
+#include "extern.h"
 
 int from_inetd = 1;