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To: freebsd-stable@freebsd.org
cc: asami@freebsd.org, syssgm@dtir.qld.gov.au
Subject: Read-only src tree solution for review
Date: Fri, 26 Sep 1997 16:30:02 +1000
From: Stephen McKay <syssgm@dtir.qld.gov.au>
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After the lex lib obj problem (fix to be committed probably tomorrow), the
other main problem was a failure building make.  I solved this by changing
line 188 of Makefile from:

IBMAKE=       ${BMAKEENV} ${MAKE} DESTDIR=${WORLDTMP}

to

IBMAKE=       ${BMAKEENV} MAKEOBJDIR=/tmp ${MAKE} DESTDIR=${WORLDTMP}

IBMAKE is only used when building make for the first time, and MAKEOBJDIR=/tmp
puts the objects in /tmp.  Without this, the old make will put the objects
in the source directory.  With this fix (plus the lex/lib one) a read only
source tree will build 2.2-stable from a 2.1.5 box.

While this seems the simplest way to fix things, some people might like
something other than /tmp.  Perhaps ${WORLDTMP}, or even something else.
It was not immediately obvious to me how to put make's object files in
its real object area.  (Think about people NOT using read-only source, and
NOT using a separate object tree.)

So, what do people think?  I want to commit a fix tomorrow some time.
If nobody speaks up, it will be either /tmp or ${WORLDTMP} for this tweak.

Then I should update the handbook with some "How to upgrade from source"
doco covering the other surprises (like group mail and group network and
/usr/src/share/info ...)

Stephen.

Oh bugger!  I've just been told that there's a power shutdown here this
weekend.  Everything should be up by the afternoon.