Cross compilation

[Xen]

John Paul Adrian Glaubitz schreef op 11-07-2017 11:37:
> On Tue, Jul 11, 2017 at 11:32:20AM +0200, Xen wrote:
>> You will need all X libraries as well though. I personally couldn't 
>> manage
>> without using OpenEmbedded.
> 
> It's fairly easy to do that on Debian thanks to Multi-Arch. You can
> install all build dependencies for the target architecture simply from
> the corresponding repository.
> 
> You basically just need to:
> 
> # dpkg --add-architecture armhf
> # apt update
> # apt build-dep openjdk-8:armhf
> 
> Just make sure you have at least Debian Jessie for openjdk-8.

Aye, but it just seems that when you have such a full-fledged system 
available already, the need for cross-compilation also grows much less, 
since it has already been done, unless you are developing I guess. I 
mean if you have not changed the JDK there is usually not much reason to 
cross-compile to a system that already has it ;-).

Anyway, to each their own indeed. The biggest pain for OpenEmbedded was 
that you cannot really select your target compiler and target glibc very 
well, I am sure you can, but I couldn't. Also, the ipkgs it created were 
not actually usable by my target system, but anyway.

It's a sort of out-of-the-box system that will compile EVERYTHING the 
JDK might need first, which takes a long time, and then finally it will 
build the JDK. If you have a target system available with all the 
required libraries, there is probably indeed not much use in using 
OpenEmbedded.

Regards.

(Also I was trying JDK 7, version 8 may have a much better build 
system).