Fails to compile on Darwin aarch64 using Nix's llvm 11

[bbhoss]

Similar to #28, I'm having this issue on Darwin too using nix's llvm.

==> exile
mkdir -p priv
clang -I/nix/store/jn1dk40cm39cxmnd1g4fa3zl89zylzbi-erlang-25.2.1/lib/erlang/usr/include -fPIC -undefined dynamic_lookup -dynamiclib -Wextra -Wall -Werror -Wno-unused-parameter -pedantic -std=c99 -O2 -fsanitize=undefined c_src/exile.c -o priv/exile.so
ld: file not found: /nix/store/bwscr98440mhhlg556fqhp5ll2fxnfic-clang-wrapper-11.1.0/resource-root/lib/darwin/libclang_rt.ubsan_osx_dynamic.dylib
clang-11: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [Makefile:22: priv/exile.so] Error 1

I removed the statement from the darwin block like your fix for #28 and confirm that it fixes my issue as well. I confirmed that this library compiles cleanly on standard Mac so it's definitely due to my Nix config but I am using a different version of llvm. I can understand if you don't want to support this configuration but as far as I can tell it's a blocker for me because Nix's llvm seems like it doesn't support this. As you mentioned a proper fix would be to detect if UBSan is available and functional :)

[akash-akya]

Hi @bbhoss, thanks for reporting the issue.
I think we have to remove ubsan, till we do a proper fix to dynamically enable it.
I'll push the changes soon

[akash-akya]

@bbhoss its removed and released v0.7.0 🎉