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You need to configure your build: which things to build, how much optimisation to use, whether to build profiling libraries, and so on. If you don't do this, then you get *everything*, and it will be *optimised to the hilt*, which means the build will take a Very Long Time. This is fine if you wanted to build GHC for installation and use, but not if you're building GHC to do some development work on it.
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You need to configure your build: which things to build, how much optimisation to use, whether to build profiling libraries, and so on. If you don't do this, then you get *everything*, and it will be *optimised to the hilt*, which means the build will take a Very Long Time. This is fine if you wanted to build GHC for installation and use, but not if you're building GHC to do some development work on it.
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