Cross compilation incompatibility

[ew1abz]

@wb2osz, the master branch (version 1.5) is a little bit incompatible with a cross-compile approach. I made a successful attempt to build it (without telemetry toolkit, because it requires Perl) using Yocto build system.
Some issues:

1. Hardcoded compiler
2. Hardcoded paths
3. Compile-time generation of fsk_fast_filter.h <- the hardest part!

If you are interested in, I'll prepare a pull request.

[dranch]

Please try again using the Direwolf DEV branch which has significant changes in it. From there, please create a Git merge request again DEV and your code will be reviewed. Thanks! If you have any Makefile related changes, please contribute to the Cmake effort being tracked here:

#216

--David

[ew1abz]

David,
I've created a layer for Yocto/OpenEmbedded for Direwolf 1.5:
https://github.com/ew1abz/meta-direwolf
It has fixes for cross-compilation (as patches). I guess it's good enough for now. Later I'll take a look at DEV branch and contribute there.

For CMake is nice to have a start point. Moreover, it has to be for Linux, Windows, and Macosx. Maybe we can use GitHub actions for testing that.

[ew1abz]

Yocto/OpenEmbedded layer for Direwolf 1.5 has been officially submitted:
http://layers.openembedded.org/layerindex/branch/master/layer/meta-direwolf/