lib/CompilerDriver/Tool.cpp

   1 //===--- Tool.cpp - The LLVM Compiler Driver --------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open
   6 // Source License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 //  Tool base class - implementation details.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "llvm/CompilerDriver/Tool.h"
  15
  16 #include "llvm/System/Path.h"
  17 #include "llvm/Support/CommandLine.h"
  18
  19 using namespace llvm;
  20 using namespace llvmc;
  21
  22 extern cl::opt<std::string> OutputFilename;
  23
  24 namespace {
  25   sys::Path MakeTempFile(const sys::Path& TempDir, const std::string& BaseName,
  26                          const std::string& Suffix) {
  27     sys::Path Out;
  28
  29     // Make sure we don't end up with path names like '/file.o' if the
  30     // TempDir is empty.
  31     if (TempDir.empty()) {
  32       Out.set(BaseName);
  33     }
  34     else {
  35       Out = TempDir;
  36       Out.appendComponent(BaseName);
  37     }
  38     Out.appendSuffix(Suffix);
  39     // NOTE: makeUnique always *creates* a unique temporary file,
  40     // which is good, since there will be no races. However, some
  41     // tools do not like it when the output file already exists, so
  42     // they have to be placated with -f or something like that.
  43     Out.makeUnique(true, NULL);
  44     return Out;
  45   }
  46 }
  47
  48 sys::Path Tool::OutFilename(const sys::Path& In,
  49                             const sys::Path& TempDir,
  50                             bool StopCompilation,
  51                             const char* OutputSuffix) const {
  52   sys::Path Out;
  53
  54   if (StopCompilation) {
  55     if (!OutputFilename.empty()) {
  56       Out.set(OutputFilename);
  57     }
  58     else if (IsJoin()) {
  59       Out.set("a");
  60       Out.appendSuffix(OutputSuffix);
  61     }
  62     else {
  63       Out.set(In.getBasename());
  64       Out.appendSuffix(OutputSuffix);
  65     }
  66   }
  67   else {
  68     if (IsJoin())
  69       Out = MakeTempFile(TempDir, "tmp", OutputSuffix);
  70     else
  71       Out = MakeTempFile(TempDir, In.getBasename(), OutputSuffix);
  72   }
  73   return Out;
  74 }