diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 1797804..1b80527 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -1226,6 +1226,23 @@
 } // end anonymous namespace
 
 namespace {
+// x86-32 Haiku target
+class HaikuX86_32TargetInfo : public X86_32TargetInfo {
+public:
+  HaikuX86_32TargetInfo(const std::string& triple)
+    : X86_32TargetInfo(triple) {
+    SizeType = UnsignedLong;
+  }                                       	
+  virtual void getTargetDefines(const LangOptions &Opts,
+                                MacroBuilder &Builder) const {
+    X86_32TargetInfo::getTargetDefines(Opts, Builder);
+    Builder.defineMacro("__INTEL__");
+    Builder.defineMacro("__HAIKU__");
+  }
+};
+} // end anonymous namespace
+
+namespace {
 // x86-64 generic target
 class X86_64TargetInfo : public X86TargetInfo {
 public:
@@ -2351,6 +2368,8 @@
       return new MinGWX86_32TargetInfo(T);
     case llvm::Triple::Win32:
       return new VisualStudioWindowsX86_32TargetInfo(T);
+    case llvm::Triple::Haiku:
+      return new HaikuX86_32TargetInfo(T);
     default:
       return new X86_32TargetInfo(T);
     }
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 6a74ff4..77456fa 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -619,6 +619,11 @@
         CPUName = "core2";
       else if (getToolChain().getArchName() == "i386")
         CPUName = "yonah";
+    } else if (getToolChain().getOS().startswith("haiku"))  {
+      if (getToolChain().getArchName() == "x86_64")
+        CPUName = "x86-64";
+      else if (getToolChain().getArchName() == "i386")
+        CPUName = "i586";
     } else {
       if (getToolChain().getArchName() == "x86_64")
         CPUName = "x86-64";
diff --git a/lib/Frontend/InitHeaderSearch.cpp b/lib/Frontend/InitHeaderSearch.cpp
index 9f5bced..b675df0 100644
--- a/lib/Frontend/InitHeaderSearch.cpp
+++ b/lib/Frontend/InitHeaderSearch.cpp
@@ -429,6 +429,49 @@
       }
     }
     break;
+  case llvm::Triple::Haiku:
+    AddPath("/boot/common/include", System, true, false, false);
+    AddPath("/boot/develop/headers/os", System, true, false, false);
+    AddPath("/boot/develop/headers/os/app", System, true, false, false);
+    AddPath("/boot/develop/headers/os/arch", System, true, false, false);
+    AddPath("/boot/develop/headers/os/device", System, true, false, false);
+    AddPath("/boot/develop/headers/os/drivers", System, true, false, false);
+    AddPath("/boot/develop/headers/os/game", System, true, false, false); 
+    AddPath("/boot/develop/headers/os/interface", System, true, false, false);
+    AddPath("/boot/develop/headers/os/kernel", System, true, false, false);
+    AddPath("/boot/develop/headers/os/locale", System, true, false, false);
+    AddPath("/boot/develop/headers/os/mail", System, true, false, false);
+    AddPath("/boot/develop/headers/os/media", System, true, false, false);
+    AddPath("/boot/develop/headers/os/midi", System, true, false, false);
+    AddPath("/boot/develop/headers/os/midi2", System, true, false, false);
+    AddPath("/boot/develop/headers/os/net", System, true, false, false);
+    AddPath("/boot/develop/headers/os/storage", System, true, false, false);
+    AddPath("/boot/develop/headers/os/support", System, true, false, false);
+    AddPath("/boot/develop/headers/os/translation",
+      System, true, false, false);
+    AddPath("/boot/develop/headers/os/add-ons/graphics", 
+      System, true, false, false);
+    AddPath("/boot/develop/headers/os/add-ons/input_server", 
+      System, true, false, false);
+    AddPath("/boot/develop/headers/os/add-ons/screen_saver", 
+      System, true, false, false);
+    AddPath("/boot/develop/headers/os/add-ons/tracker", 
+      System, true, false, false);
+    AddPath("/boot/develop/headers/os/be_apps/Deskbar",
+      System, true, false, false);
+    AddPath("/boot/develop/headers/os/be_apps/NetPositive",
+      System, true, false, false);
+    AddPath("/boot/develop/headers/os/be_apps/Tracker",
+      System, true, false, false);
+    AddPath("/boot/develop/headers/cpp", System, true, false, false);
+    AddPath("/boot/develop/headers/cpp/i586-pc-haiku", 
+      System, true, false, false);
+    AddPath("/boot/develop/headers/3rdparty", System, true, false, false);
+    AddPath("/boot/develop/headers/bsd", System, true, false, false);
+    AddPath("/boot/develop/headers/glibc", System, true, false, false);
+    AddPath("/boot/develop/headers/posix", System, true, false, false);
+    AddPath("/boot/develop/headers",  System, true, false, false);
+  	break;
   case llvm::Triple::MinGW64:
   case llvm::Triple::MinGW32:
     AddPath("c:/mingw/include", System, true, false, false);