tldr/pages/common/ghc.md

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# ghc
> The Glasgow Haskell Compiler.
> Compiles and links Haskell source files.
> More information: <https://www.haskell.org/ghc>.
- Find and compile all modules in the current directory:
`ghc Main`
- Compile a single file:
`ghc {{path/to/file.hs}}`
- Compile using extra optimization:
`ghc -O {{path/to/file.hs}}`
- Stop compilation after generating object files (.o):
`ghc -c {{path/to/file.hs}}`
- Start a REPL (interactive shell):
`ghci`
- Evaluate a single expression:
`ghc -e {{expression}}`