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From: John Birrell  <jb@cimlogic.com.au>
Message-Id: <199809022126.HAA29947@cimlogic.com.au>
Subject: Re: B CURRENT Build environment (Was: Re: Why no ldconfig for ELF?)
In-Reply-To: <199809021926.VAA02248@gratis.grondar.za> from Mark Murray at "Sep 2, 98 09:26:42 pm"
To: mark@grondar.za (Mark Murray)
Date: Thu, 3 Sep 1998 07:26:10 +1000 (EST)
Cc: jdp@polstra.com, current@FreeBSD.ORG, jb@cimlogic.com.au
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Mark Murray wrote:
> John Polstra wrote:
> > OK, I think I understand the problem now.  Perhaps the right
> > solution is to change src/Makefile.inc1 to export WORLDTMP into the
> > environment.  There's already a place for that:
> > 
> > COMPILER_ENV=   BISON_SIMPLE=${TOOLROOT}/usr/share/misc/bison.simple \
> >                 COMPILER_PATH=${TOOLROOT}/usr/libexec:${TOOLROOT}/usr/bin \
> >                 GCC_EXEC_PREFIX=${WORLDTMP}${SHLIBDIR}:${WORLDTMP}/usr/lib/ \
> >                 LD_LIBRARY_PATH=${TOOLROOT}${SHLIBDIR} \
> >                 LIBRARY_PATH=${WORLDTMP}${SHLIBDIR}:${WORLDTMP}/usr/lib
> > 
> > BMAKEENV=       PATH=${TMPPATH} ${COMPILER_ENV} NOEXTRADEPEND=t \
> >                 OBJFORMAT_PATH=${TOOLROOT}/usr/libexec:/usr/libexec
> > XMAKEENV=       PATH=${STRICTTMPPATH} ${COMPILER_ENV} \
> >                 OBJFORMAT_PATH=${TOOLROOT}/usr/libexec \
> >                 CFLAGS="-nostdinc ${CFLAGS}"    # XXX -nostdlib
> 
> AHA!! So I wan't being all that dumb!! 
> 
> Thanks! I think this will fix my problem. (Eagerly awaits JB's
> pronouncements)

WORLDTMP is private to the `make world' build system which is private to
the top level makefiles. No other makefiles should know about these.
They should rely on the environment variables that the tools naturally
look for.

LIBRARY_PATH is what tells the linker what path to use instead of /usr/lib
when searching for libraries to link against. In phase two of an aout->elf
transition build, LIBRARY_PATH points to
/usr/obj/elf/usr/src/tmp/usr/lib/elf:/usr/obj/elf/usr/src/tmp/usr/lib
whereas LD_LIBRARY_PATH is /usr/obj/aout/usr/src/tmp/usr/lib/aout, so
the linker should only see elf libraries.

-- 
John Birrell - jb@cimlogic.com.au; jb@freebsd.org http://www.cimlogic.com.au/
CIMlogic Pty Ltd, GPO Box 117A, Melbourne Vic 3001, Australia +61 418 353 137

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