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();
65 bool toDelete = (SaveTemps == SaveTempsEnum::Unset);
68 ret = graph.Build(tempDir, langMap);
72 tempDir.eraseFromDisk(true);
77 tempDir.eraseFromDisk(true);
84 // Sometimes plugins want to condition on the value in argv[0].
85 const char* ProgramName;
87 int Main(int argc, char** argv) {
90 CompilationGraph graph;
92 ProgramName = argv[0];
94 cl::ParseCommandLineOptions
95 (argc, argv, "LLVM Compiler Driver (Work In Progress)", true);
98 Plugins.RunInitialization(langMap, graph);
101 int ret = graph.Check();
103 llvm::errs() << "check-graph: no errors found.\n";
115 graph.writeGraph(OutputFilename.empty()
116 ? std::string("compilation-graph.dot")
121 if (InputFilenames.empty()) {
122 throw std::runtime_error("no input files");
125 return BuildTargets(graph, langMap);
127 catch(llvmc::error_code& ec) {
130 catch(const std::exception& ex) {
131 llvm::errs() << argv[0] << ": " << ex.what() << '\n';
134 llvm::errs() << argv[0] << ": unknown error!\n";
139 } // end namespace llvmc