#10970: Built in MIN_VERSION macro support -------------------------------------+------------------------------------- Reporter: ezyang | Owner: Type: feature | Status: new request | Priority: normal | Milestone: Component: Compiler | Version: 7.11 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Pursuant to https://mail.haskell.org/pipermail/ghc- devs/2015-September/010015.html Recapped here: when preprocessing Haskell source code, we generate a temporary stub header file which defines a number of MIN_VERSION macros, ala what Cabal generates today. Specifically, for every explicitly specified package dependency (via a `-package` or `-package-id` argument), we generate a `MIN_VERSION_pkgname` macro which tests for the version recorded for the package database. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10970 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler