Orchid XP v8 <voi### [at] devnull> wrote:
> What, you mean like

>    ghc -M RootModule

> or similar?

  That goes a long way, but makefiles support more than purely compiling
the program.

  For example, a source code file might depend on a file which contains
data (eg. autogenerated code), which in itself may depend on a different
program, which itself is compiled separately, and/or on some other files
(which are used to autogenerate the data).

  There's no way for a program to automatically know that a data file
depends on program X and on input files Y and Z, so the programmer must
be able to specify those dependencies manually in addition to the automatic
dependencies.

-- 
                                                          - Warp

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