Re: Help with GUB, or manual cross-compile

[Phil Holmes]

----- Original Message ----- 
From: "Chris Yate" <address@hidden>
To: <address@hidden>
Sent: Saturday, October 01, 2016 9:36 AM
Subject: Help with GUB, or manual cross-compile


> Following up a conversation on the user list, as this might be a better
> place to ask... I think we've established that the only way to compile for
> Windows is to use GUB on Linux to cross-compile for mingw. Well, GUB barfs
> all the time here. I could start posting chunks of GUB log messages, but I
> don't feel that's really useful at this point -- if someone is able to 
> help
> diagnose the problem we can look into that!
>
> First, to make sure I'm not wasting my time, can somebody suggest what
> build platform and configuration I need to successfully cross-compile
> Lilypond for Windows? I've tried a number of different Ubuntu versions,
> either VMs or linux running directly on the metal. I've had to install a
> few libraries (mpf, mpc, zlib etc.) from apt in order to get a step 
> further
> in GUB. I've also installed the mingw g++ packages, though I'm not sure
> whether that is relevant.
>
> Also, do I need to anything more than:
>    $ bin/gub mingw::lilypond
> ?
>
> Alternatively, I'm sure it should be possible (possibly easy) to
> ./configure the lilypond source code directly for cross compilation. If
> someone has a quick solution for how to do that, I'd be really grateful of
> it.
>
> Context: I'm getting seriously fed up with a bug in Lilypond that's 
> causing
> the build of scores of larger than smallish size to crash. It's a very
> repeatable assertion failure, "Line 1180 in Page-Breaking.cc". However,
> I've not found it easy to create a reliable "minimal" example for this. It
> only seems to happen in reasonably complicated scores with 10+ staves and 
> a
> few pages.  In any case, unless I can compile this for Windows I wouldn't
> be able to investigate the problem at all.
>
> Thanks in advance!

Gub will certainly work on Ubuntu 10.04 and 14.04 - this is what I have used 
in the past and currently.  Have you read and followed the steps in 
http://lilypond.org/doc/v2.19/Documentation/contributor/notes-on-builds-with-gub - 
this describes how to set Gub up, and should avoid any need for manual 
downloads.

If you build the Windows .exe using the command above, you can only build 
from origin/master.  If you build all the binaries, you can build from any 
branch of the git repo.  This is exactly what I've been doing over the last 
week or so for https://sourceforge.net/p/testlilyissues/issues/4975/

Have you narrowed the problem down to a specific new release? - e.g. it 
happens in 2.19.32 but not 2.19.31?

--
Phil Holmes