On 28 July 2016 at 18:36, Dietmar Winkler <dietmar.wink...@dwe.no> wrote:
> Thanks James, > > you are right the build works now. But I hope you don't mind me asking > (since I really want to understand it) how you ended up at that > IPEPREFIX path. > > The source is in: > > ~/tmp/snap/ipe/parts/ipe/src > > For the build that gets copied over to > > ~/tmp/snap/ipe/parts/ipe/build > > make gets executed in the subdir "src", which means now we are in > > ~/tmp/snap/ipe/parts/ipe/build/src > > Now I try to travers 3 levels up as defined by > > - IPEPREFIX=../../../install > > and I end up in > > ~/tmp/snap/ipe/parts/ > > but here is only the "ipe" dir the install is one level below: > > ~/tmp/snap/ipe/parts[master]$ tree -L 2 > . > └── ipe > ├── build > ├── install > ├── src > ├── state > └── ubuntu > > So how come > > - IPEPREFIX=../../../install > > works but > > - IPEPREFIX=../../install > > would not (which I would find logical)? > > It's more to do with the build script than with snapcraft. Since there are multiple directories called "install" it's hard to see what's happening. If you try something like "../xxxx" instead, then it's easier to spot what the script is doing. When the script was running, I spotted that it said: make[2]: Entering directory '<snip>/parts/ipe/build/src/ipe' So, that's where the extra level comes from. > > One other question, is there somewhere a list of available "plugs". I > guessed I would need "x11" but only found this reference in some > examples. I did not manage to find any specific documentation on this. > > The plugs are documented with snapd rather than snapcraft. There's a list here: https://developer.ubuntu.com/en/snappy/guides/interfaces/ But the definitive list is the source code (sometimes the tests there can be helpful): https://github.com/snapcore/snapd/tree/master/interfaces/builtin The "playpen" examples can be helpful as well: https://github.com/ubuntu/snappy-playpen
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