X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=utils%2Frunghc%2Frunghc.hs;h=aadafd9a7125ef28785770e74294187b4badc429;hp=bfdcc96b3a4c355e9d478461ce1fcb8b47007d4d;hb=34cc75e1a62638f2833815746ebce0a9114dc26b;hpb=dacc1aa41699ee6c8f4c49ef6061c95ea5e70017

diff --git a/utils/runghc/runghc.hs b/utils/runghc/runghc.hs
index bfdcc96..aadafd9 100644
--- a/utils/runghc/runghc.hs
+++ b/utils/runghc/runghc.hs
@@ -26,6 +26,7 @@ import Control.Exception
 import Data.Char
 import Data.List
 import Data.Monoid
+import Data.Version
 import System.Cmd
 import System.Directory
 import System.Environment
@@ -44,6 +45,7 @@ main = do
     args <- getArgs
     case parseRunGhcFlags args of
         (Help, _) -> printUsage
+        (ShowVersion, _) -> printVersion
         (RunGhcFlags (Just ghc), args') -> doIt ghc args'
         (RunGhcFlags Nothing, args') -> do
             mbPath <- getExecPath
@@ -55,11 +57,14 @@ main = do
 
 data RunGhcFlags = RunGhcFlags (Maybe FilePath) -- GHC location
                  | Help -- Print help text
+                 | ShowVersion -- Print version info
 
 instance Monoid RunGhcFlags where
     mempty = RunGhcFlags Nothing
     Help `mappend` _ = Help
     _ `mappend` Help = Help
+    ShowVersion `mappend` _ = ShowVersion
+    _ `mappend` ShowVersion = ShowVersion
     RunGhcFlags _ `mappend` right@(RunGhcFlags (Just _)) = right
     left@(RunGhcFlags _) `mappend` RunGhcFlags Nothing = left
 
@@ -70,11 +75,16 @@ parseRunGhcFlags = f mempty
           f flags (('-' : 'f' : ghc) : args)
               = f (flags `mappend` RunGhcFlags (Just ghc)) args
           f flags ("--help" : args) = f (flags `mappend` Help) args
+          f flags ("--version" : args) = f (flags `mappend` ShowVersion) args
           -- If you need the first GHC flag to be a -f flag then
           -- you can pass -- first
           f flags ("--" : args) = (flags, args)
           f flags         args  = (flags, args)
 
+printVersion :: IO ()
+printVersion = do
+    putStrLn ("runghc " ++ VERSION)
+
 printUsage :: IO ()
 printUsage = do
     putStrLn "Usage: runghc [runghc flags] [GHC flags] module [program args]"
@@ -82,6 +92,7 @@ printUsage = do
     putStrLn "The runghc flags are"
     putStrLn "    -f /path/to/ghc       Tell runghc where GHC is"
     putStrLn "    --help                Print this usage information"
+    putStrLn "    --version             Print version number"
 
 doIt :: String -> [String] -> IO ()
 doIt ghc args = do