#9749: ghc -M 7.8 does not add underscores when -dep-suffix is used -------------------------------------+------------------------------------- Reporter: nh2 | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.4 Component: Build System | Version: 7.8.3 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Easy (less than 1 | Type of failure: hour) | None/Unknown Blocked By: | Test Case: Related Tickets: 7381 | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- https://www.haskell.org/ghc/docs/7.8.3/html/users_guide/separate- compilation.html says: ''Make extra dependencies that declare that files with suffix `.<suf>_<osuf>` depend on interface files with suffix `.<suf>_hi`'' but ghc 7.8 doesn't do that any more, it drops the `_` underscore. This undocumented (neither in User Guide nor in Changelog) change was introduced for #7381 in https://git.haskell.org/ghc.git/commitdiff/af072fc35d8dbe7962e62700da052593e.... Is this a documentation bug or a `ghc -M` bug? How should one write `ghc -M` invocations that work on both 7.6 and 7.8? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9749 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler