Apple-XL-CXX.cmake
set(CMAKE_SHARED_MODULE_CREATE_CXX_FLAGS "-bundle")
# Enable shared library versioning.
set(CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG "-Wl,-install_name")
# -qhalt=e = Halt on error messages (rather than just severe errors)
string(APPEND CMAKE_C_FLAGS_INIT " -qhalt=e")