Configure script output recommends make
The end of the output from the configure script suggests using make but it should recommend hadrian now.
For a standard build of GHC (fully optimised with profiling), type (g)make.
To make changes to the default build configuration, copy the file
mk/build.mk.sample to mk/build.mk, and edit the settings in there.
For more information on how to configure your GHC build, see
https://gitlab.haskell.org/ghc/ghc/wikis/building