On Thu, 2020-09-17 at 20:09 -0700, Chuck Wolber wrote:
>
> Hi all,
>
> I have a need to unpack an ISO image during do_unpack. This does not
> appear to be one of the extensions that is handled by default, so I
> am working out a way to use xorriso to do this for me.
>
> I can get this to work in the following way, but it involves calling
> an executable running on the build host, which only works by luck
> since the host executable is the same architecture as what I am
> currently building. I would like to do this in a portable way that
> does not break when I try to build for a different architecture.
>
> DEPENDS += "xorriso"
>
> do_unpack_append() {
> bb.build.exec_func('unpack_iso', d)
> }
>
> unpack_iso() {
> /usr/bin/xorriso -osirrox on -indev ${WORKDIR}/${PN}_${PV}.iso
> -extract / ${S}
> }
>
>
> From looking at base.bbclass, it _seems_ as if my solution involves
> something like this:
>
> d.appendVarFlag('do_unpack', 'depends', '
> xorriso:do_populate_sysroot')
>
> But it is unclear exactly where that would go within my recipe. Any
> thoughts?
You can do the same thing with:
do_unpack[depends] += " xorriso:do_populate_sysroot"
but note that you want xorriso-native, not xorriso.
Cheers,
Richard
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