Hi Michael,
On Mon, Nov 23, 2020 at 04:49:30PM -0700, Michael Callahan wrote:
> I do not want do_compile to run again, it rebuilds the whole image.
> What is the best way to always run find_version?
>
Use an anonymous python function that sets VERSION, e.g.:
python __anonymous() {
d.setVar('VERSION', find_version(d))
}
as anonymous python functions are always executed during parsing.
Then add the following to your recipe:
do_compile[vardepsexclude] += "VERSION"
VERSION will always be set appropriately every time the recipe is parsed
but do_compile will only be rerun when a change in the task has occurred
to the exception of the VERSION variable.
No idea if that works as I don't use those, but that's an hint. Anyway, you
probably want a behavior similar to DATETIME's.
Cheers,
Quentin
> On Sun, Nov 22, 2020 at 7:53 PM Khem Raj <[email protected]> wrote:
> >
> > On Sun, Nov 22, 2020 at 6:17 PM Michael Callahan
> > <[email protected]> wrote:
> > >
> > > I am having trouble with sstate caching of my os-release.bbappend and
> > > am stuck. The simple example file looks like something below, where I
> > > am setting a variable from a computed python function. What's the magic
> > > to make the find_version(d) always run but do_compile to only run if
> > > VERSION changes? I basically want something like
> > > `find_version[nostamp]="1"` but that seems to only work for tasks.
> > >
> > > def find_version(d):
> > > import subprocess
> > > cmd = "git describe --long"
> > > return subprocess.check_output(cmd).rstrip().decode('utf-8')
> > >
> > > VERSION = "${@find_version(d)}"
> > > # do_compile uses $VERSION
> > >
> >
> > perhaps mark the task which is using this variable as nostamp.
> >
> > >
> > >
>
>
>
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