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-rw-r--r--src/Haddock.hs3
-rw-r--r--src/Haddock/InterfaceFile.hs2
-rw-r--r--src/Haddock/Options.hs4
3 files changed, 6 insertions, 3 deletions
diff --git a/src/Haddock.hs b/src/Haddock.hs
index 3b31c756..5f5b1156 100644
--- a/src/Haddock.hs
+++ b/src/Haddock.hs
@@ -367,6 +367,8 @@ shortcutFlags flags = do
when (Flag_Help `elem` flags) (bye usage)
when (Flag_Version `elem` flags) byeVersion
when (Flag_InterfaceVersion `elem` flags) (bye (show binaryInterfaceVersion ++ "\n"))
+ when (Flag_CompatibleInterfaceVersions `elem` flags)
+ (bye (unwords (map show binaryInterfaceVersionCompatibility) ++ "\n"))
when (Flag_GhcVersion `elem` flags) (bye (cProjectVersion ++ "\n"))
when (Flag_PrintGhcPath `elem` flags) $ do
@@ -448,4 +450,3 @@ getExecDir = return Nothing
#endif
#endif
-
diff --git a/src/Haddock/InterfaceFile.hs b/src/Haddock/InterfaceFile.hs
index 1127205d..4811f64f 100644
--- a/src/Haddock/InterfaceFile.hs
+++ b/src/Haddock/InterfaceFile.hs
@@ -15,7 +15,7 @@
module Haddock.InterfaceFile (
InterfaceFile(..), ifPackageId,
readInterfaceFile, nameCacheFromGhc, freshNameCache, NameCacheAccessor,
- writeInterfaceFile, binaryInterfaceVersion
+ writeInterfaceFile, binaryInterfaceVersion, binaryInterfaceVersionCompatibility
) where
diff --git a/src/Haddock/Options.hs b/src/Haddock/Options.hs
index 46f9def7..a362fd05 100644
--- a/src/Haddock/Options.hs
+++ b/src/Haddock/Options.hs
@@ -62,6 +62,7 @@ data Flag
| Flag_Help
| Flag_Verbosity String
| Flag_Version
+ | Flag_CompatibleInterfaceVersions
| Flag_InterfaceVersion
| Flag_UseContents String
| Flag_GenContents
@@ -131,6 +132,8 @@ options backwardsCompat =
"display this help and exit",
Option ['V'] ["version"] (NoArg Flag_Version)
"output version information and exit",
+ Option [] ["compatible-interface-versions"] (NoArg Flag_CompatibleInterfaceVersions)
+ "output compatible interface file versions and exit",
Option [] ["interface-version"] (NoArg Flag_InterfaceVersion)
"output interface file version and exit",
Option ['v'] ["verbosity"] (ReqArg Flag_Verbosity "VERBOSITY")
@@ -272,4 +275,3 @@ readIfaceArgs flags = [ parseIfaceOption s | Flag_ReadInterface s <- flags ]
optLast :: [a] -> Maybe a
optLast [] = Nothing
optLast xs = Just (last xs)
-