-boolOpt :: DynFlag -> DynFlags -> Bool
-boolOpt f dflags = f `elem` (flags dflags)
-
-dopt_D_dump_all = boolOpt Opt_D_dump_all
-dopt_D_dump_most = boolOpt Opt_D_dump_most
-dopt_D_dump_absC = boolOpt Opt_D_dump_absC
-dopt_D_dump_asm = boolOpt Opt_D_dump_asm
-dopt_D_dump_cpranal = boolOpt Opt_D_dump_cpranal
-dopt_D_dump_deriv = boolOpt Opt_D_dump_deriv
-dopt_D_dump_ds = boolOpt Opt_D_dump_ds
-dopt_D_dump_flatC = boolOpt Opt_D_dump_flatC
-dopt_D_dump_foreign = boolOpt Opt_D_dump_foreign
-dopt_D_dump_inlinings = boolOpt Opt_D_dump_inlinings
-dopt_D_dump_occur_anal = boolOpt Opt_D_dump_occur_anal
-dopt_D_dump_parsed = boolOpt Opt_D_dump_parsed
-dopt_D_dump_realC = boolOpt Opt_D_dump_realC
-dopt_D_dump_rn = boolOpt Opt_D_dump_rn
-dopt_D_dump_simpl = boolOpt Opt_D_dump_simpl
-dopt_D_dump_simpl_iterations = boolOpt Opt_D_dump_simpl_iterations
-dopt_D_dump_spec = boolOpt Opt_D_dump_spec
-dopt_D_dump_stg = boolOpt Opt_D_dump_stg
-dopt_D_dump_stranal = boolOpt Opt_D_dump_stranal
-dopt_D_dump_tc = boolOpt Opt_D_dump_tc
-dopt_D_dump_types = boolOpt Opt_D_dump_types
-dopt_D_dump_rules = boolOpt Opt_D_dump_rules
-dopt_D_dump_usagesp = boolOpt Opt_D_dump_usagesp
-dopt_D_dump_cse = boolOpt Opt_D_dump_cse
-dopt_D_dump_worker_wrapper = boolOpt Opt_D_dump_worker_wrapper
-dopt_D_show_passes = boolOpt Opt_D_show_passes
-dopt_D_dump_rn_trace = boolOpt Opt_D_dump_rn_trace
-dopt_D_dump_rn_stats = boolOpt Opt_D_dump_rn_stats
-dopt_D_dump_stix = boolOpt Opt_D_dump_stix
-dopt_D_dump_simpl_stats = boolOpt Opt_D_dump_simpl_stats
-dopt_D_source_stats = boolOpt Opt_D_source_stats
-dopt_D_verbose_core2core = boolOpt Opt_D_verbose_core2core
-dopt_D_verbose_stg2stg = boolOpt Opt_D_verbose_stg2stg
-dopt_D_dump_hi_diffs = boolOpt Opt_D_dump_hi_diffs
-dopt_D_dump_minimal_imports = boolOpt Opt_D_dump_minimal_imports
-dopt_DoCoreLinting = boolOpt Opt_DoCoreLinting
-dopt_DoStgLinting = boolOpt Opt_DoStgLinting
-dopt_DoUSPLinting = boolOpt Opt_DoUSPLinting
-
-dopt_AllowOverlappingInstances = boolOpt Opt_AllowOverlappingInstances
-dopt_AllowUndecidableInstances = boolOpt Opt_AllowUndecidableInstances
-dopt_GlasgowExts = boolOpt Opt_GlasgowExts
-
-dopt_CoreToDo :: DynFlags -> CoreToDo
+defaultDynFlags = DynFlags {
+ coreToDo = [], stgToDo = [],
+ hscLang = HscC, hscOutName = "",
+ verbosity = 0, flags = []
+ }
+
+{-
+ Verbosity levels:
+
+ 0 | print errors & warnings only
+ 1 | minimal verbosity: print "compiling M ... done." for each module.
+ 2 | equivalent to -dshow-passes
+ 3 | equivalent to existing "ghc -v"
+ 4 | "ghc -v -ddump-most"
+ 5 | "ghc -v -ddump-all"
+-}
+
+dopt :: DynFlag -> DynFlags -> Bool
+dopt f dflags = f `elem` (flags dflags)
+
+dopt_CoreToDo :: DynFlags -> [CoreToDo]