From 43ac2978291bf1471e2c916a88c7f1c1e170dc19 Mon Sep 17 00:00:00 2001
From: Ted Kremenek <kremenek@apple.com>
Date: Tue, 5 Apr 2011 22:04:27 +0000
Subject: [PATCH] Add ToolChain support to get Clang to recognize Ubuntu/ppc
 and Gentoo/ppc64.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128944 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Driver/ToolChains.cpp | 41 +++++++++++++++++++++++++++++----------
 lib/Driver/Tools.cpp      |  8 ++++++++
 2 files changed, 39 insertions(+), 10 deletions(-)

diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index 6127d45fa3..f7bace0ed3 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -1148,6 +1148,7 @@ enum LinuxDistro {
   UbuntuKarmic,
   UbuntuLucid,
   UbuntuMaverick,
+  UbuntuNatty,
   UnknownDistro
 };
 
@@ -1166,7 +1167,8 @@ static bool IsDebian(enum LinuxDistro Distro) {
 static bool IsUbuntu(enum LinuxDistro Distro) {
   return Distro == UbuntuHardy  || Distro == UbuntuIntrepid ||
          Distro == UbuntuLucid  || Distro == UbuntuMaverick || 
-         Distro == UbuntuJaunty || Distro == UbuntuKarmic;
+         Distro == UbuntuJaunty || Distro == UbuntuKarmic ||
+         Distro == UbuntuNatty;
 }
 
 static bool IsDebianBased(enum LinuxDistro Distro) {
@@ -1182,7 +1184,9 @@ static bool HasMultilib(llvm::Triple::ArchType Arch, enum LinuxDistro Distro) {
 
     return true;
   }
-  if (Arch == llvm::Triple::x86 && IsDebianBased(Distro))
+  if (Arch == llvm::Triple::ppc64)
+    return true;
+  if ((Arch == llvm::Triple::x86 || Arch == llvm::Triple::ppc) && IsDebianBased(Distro))
     return true;
   return false;
 }
@@ -1196,16 +1200,18 @@ static LinuxDistro DetectLinuxDistro(llvm::Triple::ArchType Arch) {
     for (unsigned int i = 0, s = Lines.size(); i < s; ++ i) {
       if (Lines[i] == "DISTRIB_CODENAME=hardy")
         return UbuntuHardy;
-      if (Lines[i] == "DISTRIB_CODENAME=intrepid")
-        return UbuntuIntrepid;      
-      if (Lines[i] == "DISTRIB_CODENAME=maverick")
-        return UbuntuMaverick;
-      else if (Lines[i] == "DISTRIB_CODENAME=lucid")
-        return UbuntuLucid;
+      else if (Lines[i] == "DISTRIB_CODENAME=intrepid")
+        return UbuntuIntrepid;
       else if (Lines[i] == "DISTRIB_CODENAME=jaunty")
         return UbuntuJaunty;
       else if (Lines[i] == "DISTRIB_CODENAME=karmic")
         return UbuntuKarmic;
+      else if (Lines[i] == "DISTRIB_CODENAME=lucid")
+        return UbuntuLucid;
+      else if (Lines[i] == "DISTRIB_CODENAME=maverick")
+        return UbuntuMaverick;
+      else if (Lines[i] == "DISTRIB_CODENAME=natty")
+        return UbuntuNatty;
     }
     return UnknownDistro;
   }
@@ -1255,7 +1261,7 @@ Linux::Linux(const HostInfo &Host, const llvm::Triple &Triple)
     Suffix32 = "/32";
 
   std::string Suffix64  = "";
-  if (Arch == llvm::Triple::x86)
+  if (Arch == llvm::Triple::x86 || Arch == llvm::Triple::ppc)
     Suffix64 = "/64";
 
   std::string Lib32 = "lib";
@@ -1309,6 +1315,16 @@ Linux::Linux(const HostInfo &Host, const llvm::Triple &Triple)
     else if (!llvm::sys::fs::exists("/usr/lib/gcc/i586-suse-linux", Exists) &&
              Exists)
       GccTriple = "i586-suse-linux";
+  } else if (Arch == llvm::Triple::ppc) {
+    if (!llvm::sys::fs::exists("/usr/lib/powerpc-linux-gnu", Exists) && Exists)
+      GccTriple = "powerpc-linux-gnu";
+    else if (!llvm::sys::fs::exists("/usr/lib/gcc/powerpc-unknown-linux-gnu", Exists) && Exists)
+      GccTriple = "powerpc-unknown-linux-gnu";
+  } else if (Arch == llvm::Triple::ppc64) {
+    if (!llvm::sys::fs::exists("/usr/lib/gcc/powerpc64-unknown-linux-gnu", Exists) && Exists)
+      GccTriple = "powerpc64-unknown-linux-gnu";
+    else if (!llvm::sys::fs::exists("/usr/lib64/gcc/powerpc64-unknown-linux-gnu", Exists) && Exists)
+      GccTriple = "powerpc64-unknown-linux-gnu";
   }
 
   const char* GccVersions[] = {"4.5.2", "4.5.1", "4.5", "4.4.5", "4.4.4",
@@ -1328,10 +1344,15 @@ Linux::Linux(const HostInfo &Host, const llvm::Triple &Triple)
       Base = t2;
       break;
     }
+    std::string t3 = "/usr/lib/" + GccTriple + "/gcc/" + Suffix;
+    if (!llvm::sys::fs::exists(t3 + "/crtbegin.o", Exists) && Exists) {
+      Base = t3;
+      break;
+    }
   }
 
   path_list &Paths = getFilePaths();
-  bool Is32Bits = getArch() == llvm::Triple::x86;
+  bool Is32Bits = (getArch() == llvm::Triple::x86 || getArch() == llvm::Triple::ppc);
 
   std::string Suffix;
   std::string Lib;
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 5c986486d6..e7228229ea 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -3657,6 +3657,10 @@ void linuxtools::Link::ConstructJob(Compilation &C, const JobAction &JA,
   else if (ToolChain.getArch() == llvm::Triple::arm 
            ||  ToolChain.getArch() == llvm::Triple::thumb)
     CmdArgs.push_back("armelf_linux_eabi");
+  else if (ToolChain.getArch() == llvm::Triple::ppc)
+    CmdArgs.push_back("elf32ppclinux");
+  else if (ToolChain.getArch() == llvm::Triple::ppc64)
+    CmdArgs.push_back("elf64ppc");
   else
     CmdArgs.push_back("elf_x86_64");
 
@@ -3680,6 +3684,10 @@ void linuxtools::Link::ConstructJob(Compilation &C, const JobAction &JA,
     else if (ToolChain.getArch() == llvm::Triple::arm ||
              ToolChain.getArch() == llvm::Triple::thumb)
       CmdArgs.push_back("/lib/ld-linux.so.3");
+    else if (ToolChain.getArch() == llvm::Triple::ppc)
+      CmdArgs.push_back("/lib/ld.so");
+    else if (ToolChain.getArch() == llvm::Triple::ppc64)
+      CmdArgs.push_back("/lib64/ld64.so");
     else
       CmdArgs.push_back("/lib64/ld-linux-x86-64.so.2");
   }
-- 
2.40.0