Date: Wed, 26 Jun 1996 02:50:48 +1000 From: Bruce Evans <bde@zeta.org.au> To: bde@zeta.org.au, jkh@time.cdrom.com Cc: freebsd-current@FreeBSD.org, nate@sri.MT.net Subject: Re: Building inside of /usr/src? Message-ID: <199606251650.CAA16299@godzilla.zeta.org.au>
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>> Make's path building and priorities for finding the obj directory are now
>> broken. Not only the source tree is broken. Try this:
>But it's not!
>> $ cd /tmp
>> $ cvs co cat
>> $ cd cat
>> $ make # builds in ".", OK
>> $ make clean
>> $ mkdir obj
>> $ make # still builds in ".", not OK
>WRONG. This is not how it works now! I don't know what this weird
This is exactly how it works now. Have you tried it? :-).
>fixation people have with trampling on /usr/src now is, but there's no
>reason for this to work because it's not looking in ${.SRCDIR}/obj and
>never will again. Don't be fooled by the `objlink' stuff as that's
>only user convenience - the make system does *not* follow the link!
Building things in /usr/src is only slightly broken. Building elsewhere
is completely broken. My example builds in /tmp just because paths like
/home/bde wouldn't be portable.
>> $ make clean
>> $ mkdir /usr/obj/tmp /usr/obj/tmp/cat
>"make obj" is recommended.
It will normally fail because normal users won't have write permission
in /usr/obj, and in any case it only applies for building standard
sources.
>> $ rm -rf /usr/obj/tmp # don't leave this trap
>> $ export MAKEOBJDIR=obj
>Again, this is wrong and I explained this! MAKEOBJDIR is an absolute
>path now, NOT the name of the obj directory itself.
Actually, it's still relative to the current directory unless it begins
with a '/', but most of the point of this is lost by appending the full
path to the current directory to $MAKEOBJDIR.
>Sorry Bruce, but there's nothing broken here except your expectation
>that everything should be still broken in the ways it was broken
>before! :-)
There is no reason to break the old behaviour. If you want to break
it, break it properly by removing the builtin /usr/obj path which is
at best right for building /usr/src.
Bruce
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