# GHC Options * Recommended compiler options are: `-O2 -fspec-constr-recursive=10` * To make use of multiple cores, use: `-threaded -with-rtsopts "-N"` # Known Issues GHC 8.2.2 may hog memory and hang when building certain application using streamly (particularly the streamly benchmarks). Therefore we recommend avoiding using the GHC version 8.2.x.