@t-sommer I was able to build 'fmusim' and reference FMUs on ARM M2 Mac. When running build.py I had to fix the following:
Reference-FMUs/src/fmi3Functions.c:241:27: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes] const char* fmi3GetVersion() {
by changing it to const char* fmi3GetVersion(void).
There were also a bunch of warnings. Let me know if you want the list.