cpphs

A liberalised re-implementation of cpp, the C pre-processor.

http://projects.haskell.org/cpphs/

Version on this page:	1.20.4@rev:1
LTS Haskell 23.21:	1.20.9.1@rev:1
Stackage Nightly 2025-05-05:	1.20.9.1@rev:1
Latest on Hackage:	1.20.9.1@rev:1

See all snapshots cpphs appears in

LicenseRef-LGPL licensed and maintained by Malcolm Wallace

This version can be pinned in stack with:cpphs-1.20.4@sha256:9304f73fec5750ee55b381f925d34c73cc1f660f5adaa6490d9d8dabf4ae1880,2438

Module documentation for 1.20.4

Language
- Language.Preprocessor
  - Language.Preprocessor.Cpphs
  - Language.Preprocessor.Unlit

Depends on 6 packages(full list with versions):

base, directory, filepath, old-locale, old-time, polyparse

Used by 8 packages in lts-6.31(full list with versions):

diagrams-haddock, haskell-src-exts, hlint, hsdev, hse-cpp, HTF, language-java, test-framework-th-prime

Cpphs is a re-implementation of the C pre-processor that is both more compatible with Haskell, and itself written in Haskell so that it can be distributed with compilers.

This version of the C pre-processor is pretty-much feature-complete and compatible with traditional (K&R) pre-processors. Additional features include: a plain-text mode; an option to unlit literate code files; and an option to turn off macro-expansion.