1 //===--- Main.cpp - The LLVM Compiler Driver --------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open
6 // Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // llvmc::Main function - driver entry point.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/CompilerDriver/BuiltinOptions.h"
15 #include "llvm/CompilerDriver/CompilationGraph.h"
16 #include "llvm/CompilerDriver/Error.h"
17 #include "llvm/CompilerDriver/Plugin.h"
19 #include "llvm/Support/raw_ostream.h"
20 #include "llvm/System/Path.h"
25 namespace cl = llvm::cl;
26 namespace sys = llvm::sys;
27 using namespace llvmc;
31 sys::Path getTempDir() {
34 // The --temp-dir option.
35 if (!TempDirname.empty()) {
36 tempDir = TempDirname;
38 // GCC 4.5-style -save-temps handling.
39 else if (SaveTemps == SaveTempsEnum::Unset) {
40 tempDir = sys::Path::GetTemporaryDirectory();
43 else if (SaveTemps == SaveTempsEnum::Obj && !OutputFilename.empty()) {
44 tempDir = OutputFilename;
45 tempDir = tempDir.getDirname();
48 // SaveTemps == Cwd --> use current dir (leave tempDir empty).
52 if (!tempDir.exists()) {
54 if (tempDir.createDirectoryOnDisk(true, &ErrMsg))
55 throw std::runtime_error(ErrMsg);
61 /// BuildTargets - A small wrapper for CompilationGraph::Build.
62 int BuildTargets(CompilationGraph& graph, const LanguageMap& langMap) {
64 const sys::Path& tempDir = getTempDir();
66 (SaveTemps == SaveTempsEnum::Unset && TempDirname.empty());
69 ret = graph.Build(tempDir, langMap);
73 tempDir.eraseFromDisk(true);
78 tempDir.eraseFromDisk(true);
85 // Sometimes plugins want to condition on the value in argv[0].
86 const char* ProgramName;
88 int Main(int argc, char** argv) {
91 CompilationGraph graph;
93 ProgramName = argv[0];
95 cl::ParseCommandLineOptions
96 (argc, argv, "LLVM Compiler Driver (Work In Progress)", true);
99 Plugins.PopulateLanguageMap(langMap);
100 Plugins.PopulateCompilationGraph(graph);
103 int ret = graph.Check();
105 llvm::errs() << "check-graph: no errors found.\n";
117 graph.writeGraph(OutputFilename.empty()
118 ? std::string("compilation-graph.dot")
123 if (InputFilenames.empty()) {
124 throw std::runtime_error("no input files");
127 return BuildTargets(graph, langMap);
129 catch(llvmc::error_code& ec) {
132 catch(const std::exception& ex) {
133 llvm::errs() << argv[0] << ": " << ex.what() << '\n';
136 llvm::errs() << argv[0] << ": unknown error!\n";
141 } // end namespace llvmc