Bitcoin Forum

Can someone please teach me how to cross compile windows wallet on ubuntu for any coin.
Links and referances would also be useful. :)

For the latest versions of Bitcoin Core, follow the instructions here: https://github.com/bitcoin/bitcoin/blob/master/doc/build-windows.md. That may work for altcoins that are based on Bitcoin Core 0.10.0+ if they updated the depends system. You can also use gitian if the gitian system was updated for the altcoin. Gitian instructions can be found at https://github.com/bitcoin/bitcoin/blob/master/doc/gitian-building.md and https://github.com/bitcoin/bitcoin/blob/master/doc/release-process.md. Gitian builds go back a long time, but will not work if the gitian version required is too old or if the gitian scripts and such were never updated for the altcoin.

Just FYI, you must be running windows in order to create a windows executable file for Qt.

I have seen some blogs about that , but i have heard that its easy to cross compile it on ubuntu. so was wondering if its really that easy and if so how

I don't see how, but...
Anyway, compiling it for Linux on Ubuntu is a breeze. Compiling bitcoin-qt for windows is a pain in the neck, but I've done it successfully, but in windows for windows. The hardest part is having all in place, all dependencies. Lots of problems with conflicting versions, I had to downgrade something (I don't remember exactly what is was, as it was an experiment years ago - sorry).

@achow101 posted the exact answer to your question. Now I also understand the "cross-compilation" for windows, using win10's new featureLinux subsystem. Seems much easier these days.