depends system doesn't work for cross compilation from Ubuntu to Windows

[TheHashCoin-project]

Have tried using multiple versions of Ubuntu & Debian, but have not been able to successfully cross compile from Ubuntu/Debian to Windows (i686 or x86_64) using the depends system.

[SvenKercher]

We are using the official Gitian way, and there all files must be available at github, and we have no problems to compile from Ubuntu to Linux/Windows/OSX/ARM x86 and x64
So it is not the source that makes the problems

Im also able to do a direct cross compile from source without gitian

[TheHashCoin-project]

I haven't tried a Gitian build, but I can show you the output when I try a direct cross compile with the depends system. I know I am not missing dependencies, but perhaps one of the sources for the dependencies of the depends build are outdated, I didn't watch it the entire time to see if every dependency it fetches does so successfully. To build it regularly with autoconf (./autogen.sh, ./configure, make) on any Ubuntu distro works fine.

I am trying a fresh fetch and cross compile with the depends system now, I will paste the output when it's finished.

[TheHashCoin-project]

When you build with gitian, do you use lxc, or kvm?

[Duality-CDOO]

I believe he uses KVM.

[TheHashCoin-project]

Thank you! That's what I figured as I have not had great luck with LXC in the past. Will give it a shot.

[SvenKercher]

U can take a look at the gitian-win.yml file at contrib/gitian-descriptor , there u see the depends that u have to install at a direct compiler
After that u have to cross compile all depends at the depends folder, how to is in the readme there
And then u can compile the binaries directly

And yes, at gitian i use KVM

[AmirAbrams]

@TheHashCoin-project , did you have time to try to build with depends again? I am going to close this issue and if you still can't cross compile, we can re-open it. @SvenKercher would not be able to use gitian or build the Windows version if there was an issue.

[TheHashCoin-project]

I believe the issue was with the machine I was using for cross compilation, it is very old and has had some memory/bus related issues and is a very picky old beast haha. Thank you for your prompt attention to the issue!

…

On Fri, Oct 26, 2018 at 9:30 AM Amir Abrams ***@***.***> wrote: @TheHashCoin-project <https://github.com/TheHashCoin-project> , did you have time to try to build with depends again? I am going to close this issue and if you still can't cross compile, we can re-open it. @SvenKercher <https://github.com/SvenKercher> would not be able to use gitian or build the Windows version if there was an issue. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#130 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ApcHrZmoeO9DJq7cY2pE3XrvSTwZlv5zks5uow5ngaJpZM4XWd0A> .

[ultra-pool]

Iv tried to jack with gitian KVM & LXC for a week and its more worthless then a tick on a dog butt. haha.
Cross compiling from depends doesnt work in this source. It has memory errors. I recommend looking into getting that fixed then relying on gitian for it.

[ultra-pool]

A buddy and I was able to fix the memory problem with cross compiling the source. Ill post changes in here after it fully working.

[Duality-CDOO]

@ultra-pool if you are going to open a pull request, please pr to the v1.3-WIP branch.

[ultra-pool]

@Duality-CDOO Github would not let me push the pr. I committed in v1.3-WIP the lines that i edited to be able to cross compile on Ubuntu without memory errors. I tested 3 times cross compiling and the cross compile worked each time.

[Duality-CDOO]

I would need to look into whether that would cause issues with building normally from source, have you tested @ultra-pool. Is that an unused function?