Build libclang as a static library and link it into LibClang

.gitignore

@@ -11,3 +11,4 @@ config.status
 src/Clang/Internal/FFI_stub_ffi.c
 src/Clang/Internal/FFI_stub_ffi.h
 cabal-dev
+build/*

.gitmodules

@@ -1,6 +1,8 @@
 [submodule "llvm"]
 	path = llvm
 	url = git://github.com/sfowler/llvm.git
+        ignore = untracked
 [submodule "clang"]
 	path = clang
 	url = git://github.com/sfowler/clang.git
+        ignore = untracked

Setup.hs

@@ -17,9 +17,38 @@ main = defaultMainWithHooks simpleUserHooks
          , postInst = myPostInst
          }
 
+libclangLibraries :: [String]
+libclangLibraries =
+  [ "-lclang_static"
+  , "-lclangARCMigrate"
+  , "-lclangAST"
+  , "-lclangAnalysis"
+  , "-lclangBasic"
+  , "-lclangCodeGen"
+  , "-lclangDriver"
+  , "-lclangEdit"
+  , "-lclangFormat"
+  , "-lclangFrontend"
+  , "-lclangFrontendTool"
+  , "-lclangLex"
+  , "-lclangParse"
+  , "-lclangRewriteCore"
+  , "-lclangRewriteFrontend"
+  , "-lclangSema"
+  , "-lclangSerialization"
+  , "-lclangTooling"
+  , "-lLLVMSupport"
+  , "-lLLVMMCParser"
+  , "-lLLVMMC"
+  , "-lLLVMBitReader"
+  ]
+
 libClangConfHook (pkg, pbi) flags = do
   lbi <- confHook simpleUserHooks (pkg, pbi) flags
 
+  putStrLn "Ensuring the build directory exists..."
+  system $ "mkdir -p build"
+
   putStrLn "Linking clang repository into llvm repository..."
   system $ "ln -sf `pwd`/clang llvm/tools/clang"
 
@@ -33,6 +62,8 @@ libClangConfHook (pkg, pbi) flags = do
         ++ " --disable-jit"
         ++ " --disable-docs"
         ++ " --enable-bindings=none"
+        ++ " --disable-pic"
+        ++ " --disable-shared"
         ++ " --prefix=`pwd`/out"
 
   let lpd   = localPkgDescr lbi
@@ -45,7 +76,7 @@ libClangConfHook (pkg, pbi) flags = do
                --, extraLibs    = extraLibs    libbi ++ ["clang", "pthread"]
                , includeDirs  = includeDirs  libbi ++ [curDir ++ "/build/out/include"]
                , ccOptions    = ccOptions    libbi ++ ["-I.", "-I" ++ curDir ++ "/build/out/include"]
-               , ldOptions    = ldOptions    libbi ++ ["-Wl,-Bstatic", "-lclang", "-Wl,-Bdynamic"]
+               , ldOptions    = ldOptions    libbi ++ libclangLibraries
                }
 
   let lib' = lib { libBuildInfo = libbi' }
@@ -56,6 +87,13 @@ libClangConfHook (pkg, pbi) flags = do
 libClangBuildHook pkg lbi flags ppHandlers = do
     putStrLn "Building llvm and clang..."
     system $ "cd build && make -j8 install"
+
+    -- OS X's linker _really_ wants to link dynamically, and it doesn't support
+    -- the options you'd usually use to control that on Linux. We rename the
+    -- libclang library to make sure the linker does what we intend.
+    putStrLn "Ensuring libclang is available as libclang_static..."
+    system $ "cd build/out/lib && test -e libclang.a && mv libclang.a libclang_static.a"
+
     (buildHook simpleUserHooks) pkg lbi flags ppHandlers
 
 libClangCleanHook pkg v hooks flags = do