Subject: Object file symbols limited to 8 characters [+FIX] (#176 - #19 of 19)
Index:	cc,as,ld,ar,ranlib,nm,nlist,adb,... (2.11BSD)

Description:
	For some time now (seem like eons;-)) the object file format used 
	by Unix for the PDP-11 has restricted symbols to 8 significant 
	characters (actually 7 due to the C compiler prefixing symbols with 
	a leading tilde (~) or underscore (_)).

	Aside from the "creative constraints" this imposes on the programmer
	there was the continuing problem of 'name collisions', especially
	when porting applications from machines whose object file format
	permitted longer symbol names.

	Numerous workarounds have been employed in the past.  The
	most common one relied on a combination of a name collision
	detection program ('shortc') and the flexname capability of the
	C preprocessor ('cpp').  This served to mask the problem while
	making debugging difficult due to mangled/synthetic symbol names.

Repeat-By:
	Attempt to compile the following program:

		int	this_is_a_long_name;
		int	this_is_a_long_name_too;

		main() { exit(0)};

Fix:
	This final (part 19 of 19) part contains the sequences of steps
	which will convert a system to the new object file format.

	Do not try to do this in a hurry - the total recompilation of the
	system will take about 18 hours or so on a 11/73.  Once the patching
	process has started you will  not be able to recompile anything
	until the libraries (at a minimum) have been rebuilt and the new
	linker, assembler, compiler, ranlib, ar are in place.

	As always, the complete 2.11BSD updates are available via 
	anonymous FTP to 'ftp.iipo.gtegsc.com' in the directory /pub/2.11BSD

	Be sure that you have all previous 18 parts (#158 thru 175 inclusive)
	before starting.  Please read the complete article at least once!

	Each part has instructions specific to that part's installation.

	Thought was given to a more detailed explanation of why each
	file was modified but with 336 files (at last count) that idea
	was not practical.  There were a number of files changed to
	replace 'BSD2_10' with pdp11 but the majority of the files were
	changed for these reasons:

		1) They had references to 'truncated'/shortened names
		   which could now be removed since the symbol length
		   is greater than 7 characters.  There were also a few
		   typographical errors in variable names that did not
		   show up until additional characters became significant.

		2) There were references to the 'nlist' structure either
		   via including a.out.h or nlist.h

		3) 'adb' was almost rewritten - the diffs for adb came
		    to around 100kb alone!

		4) New replacements for programs:  ar, ranlib, symorder,
		   symcompact, strcompact and ld are totally new.

		5) Files such as "shortnames.h" and "short_name.h", etc
		   were deleted and references to them removed since these
		   "workarounds" to the short symbol names were no longer
		   needed.

	There are a number of files (kernel configuration files, kernel
	Makefiles, etc) where only the 'GENERIC' (or a representative
	example) is patched - you must then go perform a similar action
	on any local copies you may have on your system.  Example:
	/sys/conf/GENERIC may be patched, you should then go and apply
	the same change to /sys/conf/MYKERNEL, and so on.

	NOTE:  If you are not sure which 'SPL' script to copy (or how to
	       modify your existing one) then it might be best to 
	       reconfigure your kernel starting over (preserving your
	       current overlay setup).

==========  #176 (Part #19 of 19)

	The exact proceedure for completing the update of the system is:

	0) Look at the manifest of files included below.  If you have a
	   current back you may want to skip saving these files.   

	1) Apply each of the patches in 158 thru 175 by following the
	   directions provided.  DO NOT recompile anything just yet.

	2) Using the existing assembler and compiler rebuild the following
	   programs:  c0, as, ld, ar, ranlib  but DO NOT INSTALL them
	   yet.

	   First we _temporarily_ need to restore the unpatched version
	   of 'stat.h', it has some long names that can't be handled yet:

		cp -p /sys/h/stat.h /sys/h/stat.h.new
		cp -p /sys/h/stat.h~  /sys/h/stat.h

	   Then we need to put a module into libc.a that is needed by
	   'ld':

		cd /usr/src/lib/libc/pdp/gen
		cc -O -c nsym.c
		ar rv /lib/libc.a nsym.o
		ranlib /lib/libc.a
		rm nsym.o

		cd /usr/src/lib/ccom
		make

		cd /usr/src/lib/c2
		make

		cd /usr/src/bin/as
		make

		cd /usr/src/bin/ld
		make

		cd /usr/src/bin/ar
		make

		cd /usr/src/usr.bin/ranlib
		make

		cd /usr/src/bin/nm
		make

	3) Install the programs above with the commands:

		cd /usr/src/lib/ccom
		make install
		make clean

		cd /usr/src/lib/c2
		make install
		make clean

		cd /usr/src/bin/as
		make install
		make clean

		cd /usr/src/bin/ld
		make install
		make clean

		cd /usr/src/bin/ar
		make install
		make clean

		cd /usr/src/usr.bin/ranlib
		make install
		make clean

		cd /usr/src/bin/nm
		make install
		make clean

	   You now have a system that can not be used to compile application
	   programs - the only thing that can be done now is recompile the
	   libraries!

	4) Due to a bug in the makefiles (actually 'sendmail' is misplaced,
	   it really shouldn't be in /usr/src/usr.lib) there is one library
	   which must be created out of sequence:

		cd /usr/src/usr.lib/libdbm
		make
		make install
		make clean

	   The 'stat.h' file is now put back:

		mv /sys/h/stat.h.new /sys/h/stat.h

	Now it is time to do the complete recompile of the system.  This
	will take quite a while.  You will need at least 35mb of space
	free on /usr to hold the objects and new executables that are
	built.  This space will be freed during the "make install" phase.

	5) This assumes you are using 'csh', if you are using 'sh' then
	   substitute the appropriate redirection syntax.
	
		cd /usr/src
	   	make build >>& /tmp/log &

	  You can monitor the progress of the build with 'tail -f /tmp/log'
	  if you wish.  'csh' syntax for redirecting both stderr and
	  stdout has been used - if you use the Bourne shell then substitute
	  the appropriate syntax.

	Eventually the recompile will finish.  You should check the logfile
	for any errors - there may be a few warning errors from the compiler
	(these are normal) but there should be no fatal errors at all.  If
	there are errors you will need to fix them before proceeding further.

	NOTE:  if you do have any errors and correct them you can save some
	       time by not including the word 'build' above.  IF the libraries
	       (/lib/libc.a, /usr/lib/*.a) have successfully been installed
	       then you do not need to perform the extra steps that a
	       'make build' includes.

	If all has successfully been built then it is time to install
	things:

		cp -p /etc/termcap /etc/termcap.save
		cd /usr/src
	   	make installsrc >>& /tmp/log.install&
		mv /etc/termcap.save /etc/termcap

	Again, you can monitor the progress with 'tail -f /tmp/log.install'
	if you want to.  The 'csh' syntax for redirecting both stderr and
	stdout has been used - if you use the Bourne shell then substitute
	the appropriate syntax.

	6) Just when you thought everything was done along comes yet more
	   lengthy recompiliation.  We need to rebuild the kernel and the
	   autoconfigure program:

		a) You must have updated the /sys/YOUR_KERNEL/Makefile,
		   /sys/YOUR_KERNEL/SPLFIX and /sys/YOUR_KERNEL/NETSPLFIX
		   (the latter only if you are building a networking system)
		   files.

		b) cd /sys/autoconfig
		   make
		   make install
		   make clean

		c) cd /sys/YOUR_KERNEL
		   make clean
		   make
		   make install

	7) Now reboot the system:

		reboot

	Here is the master list of all files modified by patches 158 thru
	175:

/usr/include/arpa/inet.h
/usr/include/arpa/nameser.h
/usr/include/netdb.h
/usr/include/a.out.h
/usr/include/nlist.h
/usr/include/ar.h
/usr/include/ranlib.h
/usr/include/short_names.h
/usr/include/ndbm.h
/usr/include/setjmp.h
/usr/include/syscall.h
/usr/include/Makefile
/usr/lib/lint/llib-lc
/usr/src/sys/pdpuba/dz.c
/usr/src/sys/conf/spl/:splfix.mfps
/usr/src/sys/conf/spl/:splfix.movb
/usr/src/sys/conf/spl/:splfix.movb+mfps
/usr/src/sys/conf/spl/:splfix.mtps
/usr/src/sys/conf/spl/:splfix.profil
/usr/src/sys/conf/spl/:splfix.spl
/usr/src/sys/conf/spl_3com/:splfix.mfps
/usr/src/sys/conf/spl_3com/:splfix.movb
/usr/src/sys/conf/spl_3com/:splfix.movb+mfps
/usr/src/sys/conf/spl_3com/:splfix.mtps
/usr/src/sys/conf/spl_3com/:splfix.profil
/usr/src/sys/conf/spl_3com/:splfix.spl
/usr/src/sys/conf/Make.pdp
/usr/src/sys/conf/netbind.c
/usr/src/sys/conf/checksys.c
/usr/src/sys/conf/Make.nsunix
/usr/src/sys/conf/Make.sunix
/usr/src/sys/conf/Make.unix
/usr/src/sys/conf/GENERIC
/usr/src/sys/sys/tty.c
/usr/src/sys/sys/init_sysent.c
/usr/src/sys/sys/quota_sys.c
/usr/src/sys/sys/kern_fork.c
/usr/src/sys/sys/kern_clock.c
/usr/src/sys/sys/kern_time.c
/usr/src/sys/sys/ufs_inode.c
/usr/src/sys/sys/sys_generic.c
/usr/src/sys/sys/kern_sig.c
/usr/src/sys/sys/syscalls.c
/usr/src/sys/sys/uipc_usrreq.c
/usr/src/sys/sys/quota_kern.c
/usr/src/sys/sys/quota_ufs.c
/usr/src/sys/sys/subr_log.c
/usr/src/sys/sys/uipc_syscalls.c
/usr/src/sys/net/if.h
/usr/src/sys/h/exec.h
/usr/src/sys/h/param.h
/usr/src/sys/h/socket.h
/usr/src/sys/h/mbuf.h
/usr/src/sys/h/stat.h
/usr/src/sys/h/socketvar.h
/usr/src/sys/netimp/if_imp.c
/usr/src/sys/autoconfig/read_dtab.c
/usr/src/sys/autoconfig/read_nlist.c
/usr/src/sys/autoconfig/attach.c
/usr/src/sys/autoconfig/do_config.c
/usr/src/sys/netns/ns.h
/usr/src/sys/netns/spp_var.h
/usr/src/sys/pdp/mch_xxx.s
/usr/src/sys/pdp/mch_trap.s
/usr/src/sys/pdp/mch_copy.s
/usr/src/sys/pdp/symbols.raw
/usr/src/sys/netinet/in.h
/usr/src/sys/netinet/in_systm.h
/usr/src/sys/netinet/ip_acct.h
/usr/src/sys/netinet/ip_var.h
/usr/src/sys/netinet/ip_input.c
/usr/src/sys/netinet/icmp_var.h
/usr/src/sys/OTHERS/bad144/bad144.c
/usr/src/sys/pdpif/if_de.c
/usr/src/sys/pdpif/if_de.h
/usr/src/sys/pdpif/if_il.h
/usr/src/sys/pdpif/if_en.c
/usr/src/sys/pdpif/if_dereg.h
/usr/src/sys/GENERIC/Make.pdp
/usr/src/sys/GENERIC/Makefile
/usr/src/sys/GENERIC/ra.h
/usr/src/sys/GENERIC/SPLFIX
/usr/src/include/arpa/inet.h
/usr/src/include/arpa/nameser.h
/usr/src/include/a.out.h
/usr/src/include/short_names.h
/usr/src/include/ar.h
/usr/src/include/ndbm.h
/usr/src/include/netdb.h
/usr/src/include/nlist.h
/usr/src/include/ranlib.h
/usr/src/include/setjmp.h
/usr/src/include/syscall.h
/usr/src/bin/csh/sh.time.c
/usr/src/bin/csh/sh.h
/usr/src/bin/csh/shortnames.h
/usr/src/bin/make/doname.c
/usr/src/bin/make/files.c
/usr/src/bin/make/Makefile
/usr/src/bin/diff/diffreg.c
/usr/src/bin/as/as0.s
/usr/src/bin/login/login.c
/usr/src/bin/ld.c
/usr/src/bin/who.c
/usr/src/bin/nm.c
/usr/src/bin/adb
/usr/src/bin/Makefile
/usr/src/bin/ar.c
/usr/src/bin/mail.c
/usr/src/bin/write.c
/usr/src/bin/hostname.c
/usr/src/bin/wall.c
/usr/src/bin/df.c
/usr/src/bin/hostid.c
/usr/src/bin/strip.c
/usr/src/bin/size.c
/usr/src/bin/ps.c
/usr/src/etc/termcap/Makefile
/usr/src/etc/getty/gettytab.h
/usr/src/etc/routed/af.c
/usr/src/etc/routed/defs.h
/usr/src/etc/htable/htable.c
/usr/src/etc/timed/cmds.c
/usr/src/etc/timed/cmdtab.c
/usr/src/etc/timed/globals.h
/usr/src/etc/timed/timed.c
/usr/src/etc/timed/timedc.h
/usr/src/etc/named/tools/nslookup/res.h
/usr/src/etc/named/tools/nslookup/shortnames.h
/usr/src/etc/named/named/db_lookup.c
/usr/src/etc/named/named/db_save.c
/usr/src/etc/named/named/storage.c
/usr/src/etc/named/named/ns.h
/usr/src/etc/named/named/shortnames.h
/usr/src/etc/named/named/Makefile
/usr/src/etc/talkd/talkd.c
/usr/src/etc/talkd/announce.c
/usr/src/etc/talkd/print.c
/usr/src/etc/talkd/process.c
/usr/src/etc/talkd/table.c
/usr/src/etc/talkd/shortnames.h
/usr/src/etc/tftpd/tftpd.c
/usr/src/etc/fstat.c
/usr/src/etc/shutdown.c
/usr/src/etc/syslogd.c
/usr/src/etc/pstat.c
/usr/src/etc/sa.c
/usr/src/etc/route.c
/usr/src/etc/dmesg.c
/usr/src/etc/reboot.c
/usr/src/etc/arp.c
/usr/src/etc/init.c
/usr/src/etc/telnetd.c
/usr/src/etc/edquota.c
/usr/src/etc/quotacheck.c
/usr/src/etc/ifconfig.c
/usr/src/etc/repquota.c
/usr/src/etc/inetd.c
/usr/src/etc/mkfs.c
/usr/src/etc/savecore.c
/usr/src/games/pdp/chess/old.h
/usr/src/games/pdp/chess/data.c
/usr/src/games/pdp/chess/stat.c
/usr/src/games/warp/intrp.c
/usr/src/games/warp/Makefile
/usr/src/games/snake/busy.c
/usr/src/games/hack/config.h
/usr/src/games/sail/player.h
/usr/src/games/canfield.c
/usr/src/lib/c2/c2.h
/usr/src/lib/c2/c21.c
/usr/src/lib/cpp/Makefile
/usr/src/lib/ccom/c0.h
/usr/src/lib/libc/gen/nlist.c
/usr/src/lib/libc/gen/syslog.c
/usr/src/lib/libc/gen/Makefile
/usr/src/lib/libc/net/named/gethnamadr.c
/usr/src/lib/libc/net/named/Makefile
/usr/src/lib/libc/net/Makefile
/usr/src/lib/libc/pdp/gen/nsym.c
/usr/src/lib/libc/pdp/gen/Makefile
/usr/src/lib/libc/pdp/gen/rollback.s
/usr/src/lib/libc/pdp/gen/setjmp.s
/usr/src/lib/libc/pdp/csu/mcount.s
/usr/src/lib/libc/pdp/sys/gethostname.s
/usr/src/lib/libc/pdp/sys/getsockname.s
/usr/src/lib/libc/pdp/sys/gethostid.s
/usr/src/lib/libc/pdp/sys/sethostid.s
/usr/src/lib/libc/pdp/sys/sethostname.s
/usr/src/lib/libc/stdio/getw.c
/usr/src/lib/libc/stdio/putw.c
/usr/src/lib/libc/inet/inet_addr.c
/usr/src/local/mkovmake/mkovmake.c
/usr/src/local/welcome/welcome.c
/usr/src/local/less/makefile
/usr/src/man/man1/make.1
/usr/src/man/man1/symorder.1
/usr/src/man/man1/Makefile
/usr/src/man/man1/strcompact.1
/usr/src/man/man1/symcompact.1
/usr/src/man/man5/a.out.5
/usr/src/new/nntp/inews/uname.c
/usr/src/new/nntp/server/common.h
/usr/src/new/ansi/ansitape.c
/usr/src/new/jove/tune.h
/usr/src/new/jove/util.c
/usr/src/new/pathalias/local.c
/usr/src/new/checkobj/checkobj.c
/usr/src/new/rn/intrp.c
/usr/src/new/bm/bm.c
/usr/src/new/crash/crash.c
/usr/src/new/crash/route.c
/usr/src/new/rcs/src/rcssyn.c
/usr/src/new/rcs/src/sccstorcs.c
/usr/src/new/ntp/Makefile
/usr/src/new/news/src/uname.c
/usr/src/new/tcsh/sh.c
/usr/src/new/kermit5.188/makefile
/usr/src/ucb/Mail/Makefile
/usr/src/ucb/ex/expreserve.c
/usr/src/ucb/indent/indent_globs.h
/usr/src/ucb/pascal/pxp/fdec.c
/usr/src/ucb/ftp/ruserpass.c
/usr/src/ucb/ftp/cmdtab.c
/usr/src/ucb/ftp/ftp_var.h
/usr/src/ucb/netstat/host.c
/usr/src/ucb/netstat/main.c
/usr/src/ucb/netstat/if.c
/usr/src/ucb/netstat/inet.c
/usr/src/ucb/netstat/mbuf.c
/usr/src/ucb/netstat/ns.c
/usr/src/ucb/netstat/route.c
/usr/src/ucb/netstat/unix.c
/usr/src/ucb/tftp/tftp.c
/usr/src/ucb/window/scanner.c
/usr/src/ucb/window/main.c
/usr/src/ucb/window/ww.h
/usr/src/ucb/window/tt.h
/usr/src/ucb/window/var.c
/usr/src/ucb/window/parser.h
/usr/src/ucb/window/local.h
/usr/src/ucb/window/shortnames.h
/usr/src/ucb/window/tttermcap.c
/usr/src/ucb/window/Makefile
/usr/src/ucb/lock/lock.c
/usr/src/ucb/tn3270/Makefile
/usr/src/ucb/tn3270/tn3270.c
/usr/src/ucb/tn3270/keyboard.c
/usr/src/ucb/tn3270/ebctab.c
/usr/src/ucb/tn3270/asctab.c
/usr/src/ucb/tn3270/termin.c
/usr/src/ucb/tn3270/datastream.c
/usr/src/ucb/tn3270/screen.c
/usr/src/ucb/tn3270/mset.c
/usr/src/ucb/tn3270/map3270.c
/usr/src/ucb/tn3270/options.c
/usr/src/ucb/tn3270/ectype.c
/usr/src/ucb/tn3270/shortnames.h
/usr/src/ucb/talk/talk.h
/usr/src/ucb/vmstat.c
/usr/src/ucb/telnet.c
/usr/src/ucb/quota.c
/usr/src/ucb/lastcomm.c
/usr/src/ucb/strings.c
/usr/src/ucb/tail.c
/usr/src/ucb/tcopy.c
/usr/src/ucb/gcore.c
/usr/src/ucb/w.c
/usr/src/ucb/symorder.c
/usr/src/ucb/Makefile
/usr/src/ucb/symcompact.c
/usr/src/ucb/strcompact.c
/usr/src/usr.bin/diff3/diff3.c
/usr/src/usr.bin/tbl/t..c
/usr/src/usr.bin/refer/glue5.c
/usr/src/usr.bin/refer/refer..c
/usr/src/usr.bin/refer/refer5.c
/usr/src/usr.bin/refer/lookbib.c
/usr/src/usr.bin/uucp/aculib/bsdtcp.c
/usr/src/usr.bin/uucp/uucp.h
/usr/src/usr.bin/uucp/acucntrl.c
/usr/src/usr.bin/uucp/condevs.h
/usr/src/usr.bin/uucp/uucpd.c
/usr/src/usr.bin/tip/aculib/courier.c
/usr/src/usr.bin/tip/aculib/Makefile
/usr/src/usr.bin/tip/tip.h
/usr/src/usr.bin/f77/proc.c
/usr/src/usr.bin/f77/gram.dcl
/usr/src/usr.bin/prof/prof.c
/usr/src/usr.bin/find/find.c
/usr/src/usr.bin/ranlib.c
/usr/src/usr.bin/Makefile
/usr/src/usr.bin/fgrep.c
/usr/src/usr.bin/install.c
/usr/src/usr.bin/bc.y
/usr/src/usr.lib/libcurses/Makefile
/usr/src/usr.lib/libI77/dofio.c
/usr/src/usr.lib/libI77/nmlio.h
/usr/src/usr.lib/libI77/rsnmle.c
/usr/src/usr.lib/libln/reject.c
/usr/src/usr.lib/libplot/gigi/gigi.h
/usr/src/usr.lib/libplot/gigi/Makefile
/usr/src/usr.lib/libplot/plot/Makefile
/usr/src/usr.lib/libplot/aed/Makefile
/usr/src/usr.lib/libplot/t4013/Makefile
/usr/src/usr.lib/libplot/tf77/Makefile
/usr/src/usr.lib/libplot/t300/Makefile
/usr/src/usr.lib/libplot/t300s/Makefile
/usr/src/usr.lib/libplot/t4014/Makefile
/usr/src/usr.lib/libplot/t450/Makefile
/usr/src/usr.lib/libplot/hp2648/hp2648.h
/usr/src/usr.lib/libplot/hp2648/Makefile
/usr/src/usr.lib/libplot/vt0/Makefile
/usr/src/usr.lib/libplot/hp7221/hp7221.h
/usr/src/usr.lib/libplot/hp7221/Makefile
/usr/src/usr.lib/libplot/dumb/dumb.h
/usr/src/usr.lib/libplot/dumb/Makefile
/usr/src/usr.lib/libplot/bitgraph/arc.c
/usr/src/usr.lib/libplot/bitgraph/bg.h
/usr/src/usr.lib/libplot/bitgraph/Makefile
/usr/src/usr.lib/libplot/imagen/Makefile
/usr/src/usr.lib/sendmail/src/daemon.c
/usr/src/usr.lib/sendmail/src/conf.h
/usr/src/usr.lib/sendmail/src/conf.c
/usr/src/usr.lib/lpr/filters/vplotf.c
/usr/src/usr.lib/lpr/lpr.c
/usr/src/usr.lib/lpr/cmds.c
/usr/src/usr.lib/lpr/cmdtab.c
/usr/src/usr.lib/lpr/lpd.c
/usr/src/usr.lib/lpr/lpc.c
/usr/src/usr.lib/lpr/recvjob.c
/usr/src/usr.lib/lpr/startdaemon.c
/usr/src/usr.lib/libutil/Makefile
/usr/src/usr.lib/sendmail.MX/src/conf.c
/usr/src/usr.lib/sendmail.MX/src/conf.h
/usr/src/usr.lib/sendmail.MX/src/err.c