Compiled Otter finally in a PowerPC Virtual Machine but it throws a segfault when it trys to load any javascript on https sites

I'm not entirely sure what you'll trying to pull off...

Sounds like you tried QEmu plus binfmt for cross compilation?

Or did you try a "real" VM?

I'd definitely recommend going with prepackaged thing, I'd guess that otter relies heavily on the QT packages and lot of C/C++ libraries.

Building stuff isn't easy, build stuff with cross compiling hard, building complex stuff with cross compiling and no CI servers a very tedious and hard thing.