Add -resource-dir to clang -cc1, this allows the base directory for compiler

resources (e.g., /usr/lib/clang/1.1) to be passed on the command line instead of
computed.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91370 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 11 insertions, 15 deletions

diff --git a/lib/Frontend/ASTUnit.cpp b/lib/Frontend/ASTUnit.cpp
index f6cb1704f6..48296c7289 100644
--- a/lib/Frontend/ASTUnit.cpp
+++ b/lib/Frontend/ASTUnit.cpp
@@ -327,10 +327,8 @@ ASTUnit *ASTUnit::LoadFromCommandLine(const char **ArgBegin,
                                      (const char**) CCArgs.data()+CCArgs.size(),
                                      Diags);
 
-  // Set the builtin include path.
-  llvm::sys::Path P(ResourceFilesPath);
-  P.appendComponent("include");
-  CI.getHeaderSearchOpts().BuiltinIncludePath = P.str();
+  // Override the resources path.
+  CI.getHeaderSearchOpts().ResourceDir = ResourceFilesPath;
 
   CI.getFrontendOpts().DisableFree = UseBumpAllocator;
   return LoadFromCompilerInvocation(CI, Diags, OnlyLocalDecls);
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 102bbe2f82..7a3388ffbb 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -409,8 +409,9 @@ static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
     // FIXME: Provide an option for this, and move env detection to driver.
     llvm::llvm_report_error("Not yet implemented!");
   }
-  if (!Opts.BuiltinIncludePath.empty()) {
-    // FIXME: Provide an option for this, and move to driver.
+  if (!Opts.ResourceDir.empty()) {
+    Res.push_back("-resource-dir");
+    Res.push_back(Opts.ResourceDir);
   }
   if (!Opts.UseStandardIncludes)
     Res.push_back("-nostdinc");
@@ -951,8 +952,8 @@ ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
   return DashX;
 }
 
-std::string CompilerInvocation::GetBuiltinIncludePath(const char *Argv0,
-                                                      void *MainAddr) {
+std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
+                                                 void *MainAddr) {
   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
 
   if (!P.isEmpty()) {
@@ -963,7 +964,6 @@ std::string CompilerInvocation::GetBuiltinIncludePath(const char *Argv0,
     P.appendComponent("lib");
     P.appendComponent("clang");
     P.appendComponent(CLANG_VERSION_STRING);
-    P.appendComponent("include");
   }
 
   return P.str();
@@ -975,10 +975,7 @@ static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
   Opts.Verbose = Args.hasArg(OPT_v);
   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
-  // Filled in by clients.
-  //
-  // FIXME: Elimate this.
-  Opts.BuiltinIncludePath = "";
+  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
 
   // Add -I... and -F... options in order.
   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
diff --git a/lib/Frontend/InitHeaderSearch.cpp b/lib/Frontend/InitHeaderSearch.cpp
index f5c9c741b4..b4ea2576c3 100644
--- a/lib/Frontend/InitHeaderSearch.cpp
+++ b/lib/Frontend/InitHeaderSearch.cpp
@@ -733,8 +733,9 @@ void clang::ApplyHeaderSearchOptions(HeaderSearch &HS,
   if (HSOpts.UseBuiltinIncludes) {
     // Ignore the sys root, we *always* look for clang headers relative to
     // supplied path.
-    Init.AddPath(HSOpts.BuiltinIncludePath, System,
-                 false, false, false, /*IgnoreSysRoot=*/ true);
+    llvm::sys::Path P(HSOpts.ResourceDir);
+    P.appendComponent("include");
+    Init.AddPath(P.str(), System, false, false, false, /*IgnoreSysRoot=*/ true);
   }
 
   if (HSOpts.UseStandardIncludes)