Fails to build on macOS

[Treata11]

Trying to build the project on my Mac, I face a linker related error:

/safestringlib/build on master 11:33:55
$ cmake --build .

...

1 warning generated.
[ 97%] Built target safestring_objlib
[ 98%] Linking C shared library libsafestring_shared.dylib
ld: unknown options: -z -z -z 
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [libsafestring_shared.1.2.0.dylib] Error 1
make[1]: *** [CMakeFiles/safestring_shared.dir/all] Error 2
make: *** [all] Error 2