FreeBSD errors

[er2off]

• FreeBSD uses openjdk8 for devel/apache-ant, so to compile arc, need to compile natives, remove ant and compile other with newer openjdk (or manipulate with JAVA_HOME, oh hell)
• FreeBSD uses clang by default, but ant scripts uses gcc, so need to ln clang to gcc or install gcc as other package
• and as final, at the startup I have this error:

[I] [Core] Initialized SDL v2.26.3
ld-elf.so.1: /tmp/arc/2ff43028/libarc64.so: Undefined symbol "__wrap_memcpy"

[er2off]

After modifications in natives/memcpy_wrap.c it seems like stared but in endless loop (?), e.g. without any contents in SDL window
maybe Mindustry bug or long initialization

[Anuken]

See #157 (comment)

[x86-64D]

just remove memcpy_wrap.c its useless