_DYNAMIC not found (CMake build)

Upon inspection of the source code upon building an EFI application via CMake it appears the referenced "_DYNAMIC" for aarch64 (possibly others) isn't defined or found? I assume this is a CMake issue, but thought I'd bring this to your attention just in case.

My apologies I found it I just needed to build the executable as a shared library and everything worked fine. I'll close this to indicate it as solved