4.6. GHC without ––make

Without ––make, GHC will compile one or more source files given on the command line.

The first phase to run is determined by each input-file suffix, and the last phase is determined by a flag. If no relevant flag is present, then go all the way through linking. This table summarises:

Phase of the compilation systemSuffix saying “start here”Flag saying “stop after”(suffix of) output file
literate pre-processor.lhs-.hs
C pre-processor (opt.) .hs (with -cpp)-E.hspp
Haskell compiler.hs-C, -S.hc, .s
C compiler (opt.).hc or .c-S.s

Thus, a common invocation would be: ghc -c Foo.hs

Note: What the Haskell compiler proper produces depends on whether a native-code generator is used (producing assembly language) or not (producing C). See Section 4.12.6 for more details.

Note: C pre-processing is optional, the -ccpflag turns it on. See Section 4.12.3 for more details.

Note: The option -E runs just the pre-processing passes of the compiler, dumping the result in a file. Note that this differs from the previous behaviour of dumping the file to standard output.