Compiling OpenJFX on OpenBSD

[Turvamies IT Security Services]

Actually, the problem appears to be with ld rather than g++.

This thread gave me a hint: https://forums.freebsd.org/threads/5799/

"ldl is libdl. It is a linuxism. FreeBSD does not have a libdl. The
same functionality that is in linux's libdl is provided in FreeBSD's
libc. So you should be able to simply remove -ldl from CFLAGS and try
compile."

I know I should edit build.gradle further so that ldl is not included
in CFLAGS when compiling on OpenBSD, but I have not worked with gradle
build files and would very much appreciate it if you guys could help me
out in crafting the proper target definitions for OpenBSD.

- Jyri
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Turvamies IT Security Services