patches to build on freebsd 12

- added cc and ar scripts for freebsd12.amd64
- fix for sfio macro SF_FLAGS also being defined for sendfile(2) in socket.h
-- fix is to hide the sendfile(2) macro
- defined _STDFILE_DECLARED to handle FILE macro incompatibility
- added test in std/features/procfs to deal with freebsd kvm interface
-- being different from what AST expects (for ps.c)
- fix for std/banner.c to clean up main() definition
- changed comment in ar.* scripts to match cc.* scripts

src/cmd/INIT/ar.freebsd12.amd64

@@ -0,0 +1,6 @@
+: linux.i386-64 ar wrapper
+
+case $1 in
+*x*) /usr/bin/ar "$@" ;;
+*)   /usr/bin/ar U"$@" ;;
+esac

src/cmd/INIT/ar.linux.i386-64

@@ -1,4 +1,4 @@
-: stupid stupid stupid to require a non-standard option for ar to work : 2009-10-06 :
+: linux.i386-64 ar wrapper
 
 case $1 in
 *x*) /usr/bin/ar "$@" ;;

src/cmd/INIT/cc.freebsd12.amd64

@@ -0,0 +1,9 @@
+: linux.i386-64 cc wrapper : 2006-02-14 :
+
+HOSTTYPE=freebsd12.amd64
+
+case " $* " in
+*" -dumpmachine "*) echo $HOSTTYPE; exit ;;
+esac
+
+/usr/bin/cc -P "$@"

src/cmd/std/banner.c

@@ -219,7 +219,7 @@ static void banner(const char *string,const char *delim,int width)
 }
 
 int
-main(int argc, char *argv[], void *extra)
+main(int argc, char *argv[])
 {
 	register int n;
 	register char *cp;
@@ -227,7 +227,6 @@ main(int argc, char *argv[], void *extra)
 	int width = 80;
 
 	NoP(argc);
-	NoP(extra);
 	error_info.id = "banner";
 	while (n = optget(argv, usage)) switch (n)
 	{

src/cmd/std/features/procfs

@@ -4,8 +4,15 @@ sys	procfs,sysctl
 
 lib	getprocs
 lib	kvm_open,kvm_getprocs kvm.h sys/time.h sys/param.h sys/proc.h sys/sysctl.h -lkvm
+typ	struct.kinfo_proc kvm.h sys/time.h sys/param.h sys/proc.h sys/sysctl.h
 lib	pstat_getproc sys/param.h sys/pstat.h
 
+cat{
+	#ifndef _typ_struct_kinfo_proc
+	#undef _lib_kvm_open
+	#endif
+}end
+
 mem	extern_proc.p_pid,extern_proc.p_starttime,extern_proc.p_wchan,extern_proc.p_usrpri,extern_proc.p_addr,eproc.e_xsize sys/time.h sys/param.h sys/proc.h sys/sysctl.h -lkvm
 mem	procsinfo64.pi_pri procinfo.h
 mem	prpsinfo.pr_clname,prpsinfo.pr_cstime,prpsinfo.pr_cstime.tv_sec,prpsinfo.pr_ctime,prpsinfo.pr_cutime,prpsinfo.pr_gid,prpsinfo.pr_lttydev,prpsinfo.pr_ntpid,prpsinfo.pr_pgid,prpsinfo.pr_pgrp,prpsinfo.pr_psargs,prpsinfo.pr_refcount,prpsinfo.pr_rssize,prpsinfo.pr_sid,prpsinfo.pr_sonproc,prpsinfo.pr_start,prpsinfo.pr_start.tv_sec,prpsinfo.pr_starttime,prpsinfo.pr_starttime.tv_sec,prpsinfo.pr_state,prpsinfo.pr_stime,prpsinfo.pr_tgrp,prpsinfo.pr_time,prpsinfo.pr_time.tv_sec,prpsinfo.pr_utime,prpsinfo.pr_zomb,prpsinfo.pr_pctcpu,prpsinfo.pr_cpu,prpsinfo.pr_lwp.pr_pctcpu,prpsinfo.pr_lwp.pr_cpu -D_STRUCTURED_PROC -Dprpsinfo=psinfo sys/types.h sys/procfs.h