Date: Fri, 1 Aug 1997 21:39:41 +1000 From: Bruce Evans <bde@zeta.org.au> To: bde@zeta.org.au, reg@shale.csir.co.za Cc: current@freebsd.org Subject: Re: More bogons in Makefiles... Message-ID: <199708011139.VAA07673@godzilla.zeta.org.au>
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>> with a per-source directory obj symlink)). Non sloppy makefiles would
>> use a more complicated search for the object directory that would
>> actually be used if `make' were run in the external source directory.
>
>An example being? ;)
I don't know of any non-sloppy ones. `make''s object directory search
path is too complicated to duplicate in dozens of Makefiles. `make -V
.OBJDIR' was supposed to be useful for getting `make' to do the search,
but it has various problems including endless recursion and/or unacceptable
speed when used in complicated and/or large Makefiles.
>> There are more bogons here. The whole ifdef is a verbose and confusing
>> way write `YEARISTYPE= ${.OBJDIR}/yearistype. yearistype is always
>> created in the object directory and ${.OBJDIR} always exists (although
>> it's not clear where it is when make is invoked with args `obj all ...').
>
>>From this I read ${.OBJDIR} == ${.CURDIR} iff no 'make obj'. If that is
No, ${.OBJDIR} is the current directory for building sources. yearistype
is always built there. ${.CURDIR} is the current directory when `make'
is started. yearistype is only built in ${.CURDIR} if ${.CURDIR} happens
to be the same directory as ${.OBJDIR} (I think it can be a different
path in some cases involving symlinks).
>correct then there is a lot of funny business going on, because there are a
>lot of checks this form.
Maybe.
>> Because I don't use it :-). bsd.libnames.mk is no longer used in -current,
>> so this problem will go away automatically.
>
>Looks suspiciously like bsd.lib.mk includes this file... but now I'm lost ;)
>where do all the other defines for libraries come from?
Nowhere. Dependencies are generated by the _EXTRADEPEND target, and
${DPADD} is not used (except in bsd.kmod.mk), so none of the defines for
libraries are used.
Bruce
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