Hi, here is the list of built-in packages that are not available without internet connection:
- builtin_gsl (for mathmore)
- builtin_fftw3
- builtin_cfitsio
- builtin_xrootd
- builtin_tbb (for Imt)
- Vc
- builtin_veccore
- builtin_vdt
- testing (googletest)
And should be disabled with (for example): -Dbuiltin_xrootd=OFF