Build with IDE CLion fails

[ClemensLinnhoff]

I can build OpenMCx using cmake on Ubuntu 22. But now I tried building it directly in an IDE (CLion) using the ninja build system. This throws the following error:

CMake Error:
  Running

   '/usr/bin/ninja' '-C' '/.../openmcx/extern/fmi-library/build' '-t' 'recompact'

  failed with:

   ninja: error: build.ninja:3195: multiple rules generate ExpatEx/libexpat.a [-w dupbuild=err]

I know I can also use the Unix Makefile system in CLion and that works, I just wanted to document this.