Re: FYI: Why META_MODE rebuilds so much for building again after installworld (no source changes)

Mark Millard <marklmi@yahoo.com> wrote:

> Thanks for the information.
> 
> > strings `which bmake` | grep META.IGNORE
> > .MAKE.META.IGNORE_PATHS
> > .MAKE.META.IGNORE_PATTERNS
> > ${.MAKE.META.IGNORE_PATHS:O:u:tA}
> 
> The -dM output's "is newer than the target" lines
> show the path from before the above transformation.
> (The :tA results possibly could use another
> sort/uniq sequence for the realpath results?)

That indicates the above IGNOREs are not working.

> I've been pondering things because, so far, my
> attempts to experiment with this has failed to make
> the -dM output lines for the paths go away and it
> still does the related build activity. I've been
> trying the likes of:
> 
> .for ignore_legacy_tool in awk cap_mkdb cat cp crunchgen crunchide dd egrep env file2c gencat grep gzip jot lex lb ln m4 mkcsmapper mktemp mv patch realpath rm sed sh touch truncate uudecode uuencode
> xargs

Is there anything under ${OBJTOP}/tmp that you don't want to ignore?
Otherwise you could simply use

.MAKE.META.IGNORE_PATHS+= ${OBJTOP}/tmp/

You might need ${OBJTOP:tA}/tmp/
or both.

> .MAKE.META.IGNORE_PATHS+= ${OBJTOP}/tmp/legacy/usr/sbin/${ignore_legacy_tool}
> .endfor
> .for ignore_other_tool in ctfconvert objcopy nm
> .MAKE.META.IGNORE_PATHS+= ${OBJTOP}/tmp/usr/bin/${ignore_other_tool}
> .endfor
> 
> in what I use for make.conf via:
> 
> __MAKE_CONF=/usr/home/root/src.configs/make.conf
> 
> It is using paths that match the -dM output lines ( sbin
> use despite sbin -> ../bin being a symbolic link).
> 
> Note: WORLDTMP is not defined that early, thus the ${OBJTOP}/tmp
> use.
> 
> -V.MAKE.META.IGNORE_PATHS is showing the paths I would
> expect, matching the -dM lines.

Do you have example?
I really need to add some unit-tests for these...