#10970: Built in MIN_VERSION macro support -------------------------------------+------------------------------------- Reporter: ezyang | Owner: Type: feature request | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1349 Wiki Page: | -------------------------------------+------------------------------------- Comment (by rwbarton): I made a header file with 100000 copies (with different names) of the two macros generated per package, and ran a file that `#include`s it through cpp. It took 0.27 seconds. So for a more realistic package database size of 1000 packages, that's 2 milliseconds. I think that overhead is negligible relative to the time it takes ghc to compile any module. Not critical to fix this for 8.0 though, since it's just a convenience feature request. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10970#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler