Make it easier to control symbol exports

[sodero]

By not hardcoding RDYNAMIC it's possible to control exporting from the commandline on platforms/compilers that don't support -rdynamic.

[firewave]

Thanks for your contribution.

It was already possible to override it but you need to specify it after the make command.

[firewave]

Stupid me. The Makefile is obviously generated by dmake and all changes need to be done in dmake.cpp.

[sodero]

Stupid me. The Makefile is obviously generated by dmake and all changes need to be done in dmake.cpp.

Aha! I didn't even notice that there was such a thing. Interesting solution. I updated dmake.cpp as well.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[firewave]

Aha! I didn't even notice that there was such a thing. Interesting solution. I updated dmake.cpp as well.

If we would use more generic rules and dependency files we could probably reduce it a lot. But since it works and it wouldn't really improve things that is not worth the time spent - especially given how much else there is to do.

[danmar]

@firewave I assume you are OK that I merge this..