[oe] [meta-oe][PATCH] libeigen: allow empty packages

[Khem Raj]

On Tue, Oct 2, 2018 at 10:52 AM Vyacheslav Yurkov <uvv.mail at gmail.com> wrote:
>
> Hi Khem,
> It's a build time failure. libeigen is header-only library.
> All headers go into dev package, therefore the main package is empty.
> Dependency on the dev package doesn't work, AFAIK, so you have to allow
> empty package for build to succeed. Otherwise I get an error that empty
> packages are not allowed. I reproduced it when I built ceres-solver
> recipe (although I don't use the latest poky). Perhaps I'm missing
> something and it has been solved in the latest poky?
>

that helps. So lets add this to commit message and send v2, we could then move
ahead with this patch.

> Vyacheslav
>
> On 02/10/2018 17:14, Khem Raj wrote:
> > Hi Vyacheslav
> >
> > On Tue, Oct 2, 2018 at 1:33 AM Vyacheslav Yurkov <uvv.mail at gmail.com> wrote:
> >> When libeigen is used as a dependency (e.g. in ceres library),
> >> the build is broken because empty packages are not constructed be default
> >>
> > can you explain a bit more on whats going on? it is a runtime failure
> > or build time failure.
> >
> >> Signed-off-by: Vyacheslav Yurkov <uvv.mail at gmail.com>
> >> ---
> >>   meta-oe/recipes-support/libeigen/libeigen_3.3.4.bb | 1 +
> >>   1 file changed, 1 insertion(+)
> >>
> >> diff --git a/meta-oe/recipes-support/libeigen/libeigen_3.3.4.bb b/meta-oe/recipes-support/libeigen/libeigen_3.3.4.bb
> >> index 31a42a9d6..a59320655 100644
> >> --- a/meta-oe/recipes-support/libeigen/libeigen_3.3.4.bb
> >> +++ b/meta-oe/recipes-support/libeigen/libeigen_3.3.4.bb
> >> @@ -18,3 +18,4 @@ FILES_${PN}-dev = "${includedir} ${datadir}/eigen3/cmake ${datadir}/cmake/Module
> >>   # ${PN} is empty so we need to tweak -dev and -dbg package dependencies
> >>   RDEPENDS_${PN}-dev = ""
> >>   RRECOMMENDS_${PN}-dbg = "${PN}-dev (= ${EXTENDPKGV})"
> >> +ALLOW_EMPTY_${PN} = "1"
> >> --
> >> 2.19.0
> >>
> >> --
> >> _______________________________________________
>