Hi guys!
We found something bad (we think).
I've posted this on freenode #yocto just today.
meta-xilinx-tools/conf/layer.conf has INHERIT += "xsct-tc" and in this bbclass,
it messes with PATH. This has the effect that ANY random xilinx or not recipe
discovers binaries in these XSCT paths. Those binaries were obviously not
mentioned in their DEPENDS. This causes those recipes to change the way they
configure and/or build their artifacts.
Right now we have noticed that gtk-doc and gdk-pixbuf are "contaminated" with
tmp/sysroots-xsct/Scout/2019.1/bin/xsltproc. In the case of gdk-pixbuf, it
causes the recipe's meson.build
https://github.com/GNOME/gdk-pixbuf/blob/a5f74989c58aa2df643c5fd66c99bc58cd62c4e5/docs/meson.build#L69
to generate man files always. We found out because during these steps, it
reaches for
http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl which
failed randomly in our CI builds.
Way more unintended things could happen as a result of these xsct specific
paths being in EVERYONE'S PATH variable.
The fix appeared quite simple as changing layer.conf to do INHERIT +=
"xsct-tarball" instead, which actually contains the eventHandler for
BuildStarted, the reason for all this. It does fix the unwanted discovery of
binaries, but unfortunately, I have to force build these recipes since the
change I did doesn't affect sstate hashes (PATH is not part of any hash, and it
shouldn't).
Maxime and I were thinking that the xsct tarball could be refactored into a
recipe which bundles up the toolchain perhaps so that only recipes that need
the toolchain (those that inherit xsct-tc.bbclass) would get the toolchain in
their recipe-sysroot.
Any clues, insights, insults?
If you want to chat about this, join us on freenode #yocto @jeff_dagenais
@roussinm
Cheers!
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