2006-12-10  Dmitry V. Levin <ldv@altlinux.org>

	Make several global variables static.
	#ifdef definitions of rarely unused functions.
	* defs.h (rflag, tflag, outfname): Remove.
	* strace.c (iflag, interactive, pflag_seen, rflag, tflag,
	outfname, username): Make static.
	* desc.c (sys_getdtablesize): Define only for
	ALPHA || FREEBSD || SUNOS4.
	* file.c (sys_fchroot): Define only for SUNOS4 || SVR4.
	(sys_mkfifo): Define only for FREEBSD.
	* mem.c (sys_sbrk): Define only for FREEBSD || SUNOS4.
	(sys_getpagesize): Define only for
	ALPHA || FREEBSD || IA64 || SUNOS4 || SVR4.
	* net.c (sys_so_socket): Define only for SVR4.
	* process.c (sys_gethostid): Define only for
	FREEBSD || SUNOS4 || SVR4.
	(sys_gethostname): Define only for
	ALPHA || FREEBSD || SUNOS4 || SVR4.
	(sys_setpgrp): Define only for ALPHA || SUNOS4 || SVR4.
	(sys_execv): Define only for SPARC || SPARC64 || SUNOS4.
	* signal.c (sys_sigblock): Define only for FREEBSD || SUNOS4.
	(sys_sighold, sys_sigwait): Define only for SVR4.
	(sys_killpg): Define only for FREEBSD || SUNOS4.
	* stream.c (sys_getmsg): Define only for
	SPARC || SPARC64 || SUNOS4 || SVR4.
	* syscall.c (sys_indir): Define only for SUNOS4.
diff --git a/net.c b/net.c
index c627094..5c276ea 100644
--- a/net.c
+++ b/net.c
@@ -1205,6 +1205,7 @@
 	return 0;
 }
 
+#ifdef SVR4
 int
 sys_so_socket(tcp)
 struct tcb *tcp;
@@ -1231,6 +1232,7 @@
 	}
 	return 0;
 }
+#endif /* SVR4 */
 
 int
 sys_bind(tcp)