[OE-core] purpose of variables like "base_bindir_native"?

[Khem Raj]

> On Nov 30, 2016, at 3:34 AM, Robert P. J. Day <rpjday at crashcourse.ca> wrote:
> 
> 
>  i'm putting together a tutorial on the structure of the native
> sysroot and how it's built and variables involved, and was poking
> around in both bitbake.conf and native.bbclass, and i'm curious about
> one or two things.
> 
>  i could be totally wrong but it *seems* like there's native-related
> content in bitbake.conf that could be moved over to native.bbclass to
> reduce a little of the clutter. i'm perusing bitbake.conf and it's
> hard to keep track of some of the variables just because there's both
> native- and target- related settings in there. but i'll admit i
> haven't finished my inspection.
> 
>  on a more specific note, in the entire oe-core layer, there are two
> references to the variable "base_bindir_native" (formatted for
> aesthetics):
> 
> $ grep -rw base_bindir_native *
> meta/conf/bitbake.conf:base_bindir_native = "/bin"
> meta/conf/bitbake.conf:PATH_prepend =
> "${COREBASE}/scripts:i
> ${STAGING_BINDIR_TOOLCHAIN}:
> ${STAGING_BINDIR_CROSS}:
> ${STAGING_DIR_NATIVE}${sbindir_native}:
> ${STAGING_BINDIR_NATIVE}:
> ${STAGING_DIR_NATIVE}${base_sbindir_native}:
> ${STAGING_DIR_NATIVE}${base_bindir_native}:"      <----- there
> 
>  so, given that that variable is set in bitbake.conf, and is only
> referenced in that same file, what's the point of making it a
> variable? doesn't hurt, of course, but when i see a variable, i
> normally assume it's because it might be modified later somewhere, but
> i don't see that happening here. is there a reason for it? same thing
> could be said for "base_sbindir_native" as well.
> 
>  thoughts?

you could modify it if you wished to then you just change one var in local
metadata

> 
> rday
> 
> -- 
> 
> ========================================================================
> Robert P. J. Day                                 Ottawa, Ontario, CANADA
>                        http://crashcourse.ca
> 
> Twitter:                                       http://twitter.com/rpjday
> LinkedIn:                               http://ca.linkedin.com/in/rpjday
> ========================================================================
> 
> 
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