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Editorial Team
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Asked: 2026-05-15T12:50:53+00:00

Are there any good ways to make small haskell executables? With ghc6 a simple

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Are there any good ways to make small haskell executables? With ghc6 a simple hello world program seems to come to about 370kB (523kB before strip). Hello world in C is about 4kB (9kB before strip).

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  1. Editorial Team

    With the development branch of GHC (anyone know exactly which version this was added in?):

    $ ghc -o hello hello.hs
$ strip -p --strip-unneeded --remove-section=.comment -o hello-small hello
$ du hello hello-small
700 hello
476 hello-small

    Add the -dynamic flag for a dynamically linked RTS:

    $ ghc -dynamic -o hello hello.hs
$ strip -p --strip-unneeded --remove-section=.comment -o hello-small hello
$ du hello hello-small
24  hello
16  hello-small

    See also: http://hackage.haskell.org/trac/ghc/wiki/SharedLibraries/PlatformSupport

    For comparison with C:

    $ gcc hello.c -o hello
$ strip -p --strip-unneeded --remove-section=.comment -o hello-small hello
$ du hello hello-small
12  hello
8   hello-small
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