1 files changed, 58 insertions, 0 deletions
diff --git a/hadrian/src/Settings/Builders/Hsc2Hs.hs b/hadrian/src/Settings/Builders/Hsc2Hs.hs
new file mode 100644
index 0000000000..0d5363d413
--- /dev/null
+++ b/hadrian/src/Settings/Builders/Hsc2Hs.hs
@@ -0,0 +1,58 @@
+module Settings.Builders.Hsc2Hs (hsc2hsBuilderArgs) where
+
+import Hadrian.Haskell.Cabal.Type
+
+import Builder
+import Packages
+import Settings.Builders.Common
+
+hsc2hsBuilderArgs :: Args
+hsc2hsBuilderArgs = builder Hsc2Hs ? do
+    stage   <- getStage
+    ccPath  <- getBuilderPath $ Cc CompileC stage
+    gmpDir  <- getSetting GmpIncludeDir
+    top     <- expr topDirectory
+    hArch   <- getSetting HostArch
+    hOs     <- getSetting HostOs
+    tArch   <- getSetting TargetArch
+    tOs     <- getSetting TargetOs
+    version <- if stage == Stage0
+               then expr ghcCanonVersion
+               else getSetting ProjectVersionInt
+    tmpl <- (top -/-) <$> expr (templateHscPath Stage0)
+    mconcat [ arg $ "--cc=" ++ ccPath
+            , arg $ "--ld=" ++ ccPath
+            , notM windowsHost ? notM (flag CrossCompiling) ? arg "--cross-safe"
+            , pure $ map ("-I" ++) (words gmpDir)
+            , map ("--cflag=" ++) <$> getCFlags
+            , map ("--lflag=" ++) <$> getLFlags
+            , notStage0 ? flag CrossCompiling ? arg "--cross-compile"
+            , stage0    ? arg ("--cflag=-D" ++ hArch ++ "_HOST_ARCH=1")
+            , stage0    ? arg ("--cflag=-D" ++ hOs   ++ "_HOST_OS=1"  )
+            , notStage0 ? arg ("--cflag=-D" ++ tArch ++ "_HOST_ARCH=1")
+            , notStage0 ? arg ("--cflag=-D" ++ tOs   ++ "_HOST_OS=1"  )
+            , arg $ "--cflag=-D__GLASGOW_HASKELL__=" ++ version
+            , arg $ "--template=" ++ tmpl
+            , arg =<< getInput
+            , arg "-o", arg =<< getOutput ]
+
+getCFlags :: Expr [String]
+getCFlags = do
+    context <- getContext
+    autogen <- expr $ autogenPath context
+    mconcat [ remove ["-O"] (cArgs <> getStagedSettingList ConfCcArgs)
+            , getStagedSettingList ConfCppArgs
+            , cIncludeArgs
+            , getContextData ccOpts
+            -- we might be able to leave out cppOpts, to be investigated.
+            , getContextData cppOpts
+            , getContextData depCcOpts
+            , cWarnings
+            , arg "-include", arg $ autogen -/- "cabal_macros.h" ]
+
+getLFlags :: Expr [String]
+getLFlags =
+    mconcat [ getStagedSettingList ConfGccLinkerArgs
+            , ldArgs
+            , getContextData ldOpts
+            , getContextData depLdOpts ]