Add a -t="dir" option to the driver. This can be used to specify the directory to be used as TempDir if somebody doesn't want to use the standard /tmp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75121 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CompilerDriver/BuiltinOptions.h

@@ -22,6 +22,7 @@ namespace SaveTempsEnum { enum Values { Cwd, Obj, Unset }; }
 
 extern llvm::cl::list<std::string> InputFilenames;
 extern llvm::cl::opt<std::string> OutputFilename;
+extern llvm::cl::opt<std::string> TempDirname;
 extern llvm::cl::list<std::string> Languages;
 extern llvm::cl::opt<bool> DryRun;
 extern llvm::cl::opt<bool> VerboseMode;

lib/CompilerDriver/BuiltinOptions.cpp

@@ -25,6 +25,8 @@ cl::list<std::string> InputFilenames(cl::Positional, cl::desc("<input file>"),
                                      cl::ZeroOrMore);
 cl::opt<std::string> OutputFilename("o", cl::desc("Output file name"),
                                     cl::value_desc("file"), cl::Prefix);
+cl::opt<std::string> TempDirname("t", cl::desc("Temp dir name"),
+                                    cl::value_desc("dir"), cl::Prefix);
 cl::list<std::string> Languages("x",
           cl::desc("Specify the language of the following input files"),
           cl::ZeroOrMore);

lib/CompilerDriver/Main.cpp

@@ -31,6 +31,15 @@ namespace {
   sys::Path getTempDir() {
     sys::Path tempDir;
 
+    if (! TempDirname.empty() {
+      tempDir = TempDirname;
+      if (!tempDir.exists()) {
+        std::string ErrMsg;
+        if (tempDir.createDirectoryOnDisk(true, &ErrMsg))
+          throw std::runtime_error(ErrMsg);
+      }
+    }
+
     // GCC 4.5-style -save-temps handling.
     if (SaveTemps == SaveTempsEnum::Unset) {
       tempDir = sys::Path::GetTemporaryDirectory();