driver.cpp revision c2f531a1300cc7a79cb8dde12cb993da82beba1b
158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)//===-- driver.cpp - Clang GCC-Compatible Driver --------------------------===// 258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// 358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// The LLVM Compiler Infrastructure 458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// 558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// This file is distributed under the University of Illinois Open Source 658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// License. See LICENSE.TXT for details. 758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// 858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)//===----------------------------------------------------------------------===// 958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// 1058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// This is the entry point to the clang driver; it is a thin wrapper 1158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)// for functionality in the Driver clang library. 121320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// 1358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)//===----------------------------------------------------------------------===// 1458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 1558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "clang/Basic/CharInfo.h" 1658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "clang/Basic/DiagnosticOptions.h" 1758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "clang/Driver/Compilation.h" 1858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "clang/Driver/Driver.h" 191320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "clang/Driver/DriverDiagnostic.h" 201320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "clang/Driver/Options.h" 2158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "clang/Frontend/CompilerInvocation.h" 2258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "clang/Frontend/TextDiagnosticPrinter.h" 2358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "clang/Frontend/Utils.h" 2458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/ADT/ArrayRef.h" 2558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/ADT/OwningPtr.h" 2658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/ADT/SmallString.h" 274e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "llvm/ADT/SmallVector.h" 2858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/ADT/STLExtras.h" 294e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "llvm/Option/ArgList.h" 304e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "llvm/Option/OptTable.h" 314e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "llvm/Option/Option.h" 324e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "llvm/Support/CommandLine.h" 334e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "llvm/Support/ErrorHandling.h" 3458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/Support/FileSystem.h" 354e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "llvm/Support/Host.h" 3658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/Support/ManagedStatic.h" 3758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/Support/MemoryBuffer.h" 3858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/Support/Path.h" 3958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/Support/PrettyStackTrace.h" 4058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/Support/Program.h" 4158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/Support/Regex.h" 4258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/Support/Signals.h" 4358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/Support/TargetRegistry.h" 4458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/Support/TargetSelect.h" 4558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/Support/Timer.h" 46d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)#include "llvm/Support/raw_ostream.h" 4758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "llvm/Support/system_error.h" 4858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)using namespace clang; 4958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)using namespace clang::driver; 5058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)using namespace llvm::opt; 5158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 5258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)std::string GetExecutablePath(const char *Argv0, bool CanonicalPrefixes) { 5358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (!CanonicalPrefixes) 5458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) return Argv0; 5558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 5658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // This just needs to be some symbol in the binary; C++ doesn't 5758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // allow taking the address of ::main however. 5858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) void *P = (void*) (intptr_t) GetExecutablePath; 5958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) return llvm::sys::fs::getMainExecutable(Argv0, P); 6058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 6158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 6258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)static const char *SaveStringInSet(std::set<std::string> &SavedStrings, 6358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) StringRef S) { 6458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) return SavedStrings.insert(S).first->c_str(); 6558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 6658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 6758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// ApplyQAOverride - Apply a list of edits to the input argument lists. 6858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// 6958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// The input string is a space separate list of edits to perform, 7058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// they are applied in order to the input argument lists. Edits 7158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// should be one of the following forms: 7258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// 734e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)/// '#': Silence information about the changes to the command line arguments. 7458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// 7558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// '^': Add FOO as a new argument at the beginning of the command line. 7658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// 7758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// '+': Add FOO as a new argument at the end of the command line. 7858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// 794e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)/// 's/XXX/YYY/': Substitute the regular expression XXX with YYY in the command 8058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// line. 8158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// 8258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// 'xOPTION': Removes all instances of the literal argument OPTION. 8358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// 8458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// 'XOPTION': Removes all instances of the literal argument OPTION, 8558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// and the following argument. 8658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// 8758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// 'Ox': Removes all flags matching 'O' or 'O[sz0-9]' and adds 'Ox' 8858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// at the end of the command line. 8958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// 9058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// \param OS - The stream to write edit information to. 9158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// \param Args - The vector of command line arguments. 9258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// \param Edit - The override command to perform. 9358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// \param SavedStrings - Set to use for storing string representations. 9458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)static void ApplyOneQAOverride(raw_ostream &OS, 9558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) SmallVectorImpl<const char*> &Args, 9658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) StringRef Edit, 9758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) std::set<std::string> &SavedStrings) { 9858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // This does not need to be efficient. 9958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 1005d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (Edit[0] == '^') { 10158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const char *Str = 10258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) SaveStringInSet(SavedStrings, Edit.substr(1)); 10358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) OS << "### Adding argument " << Str << " at beginning\n"; 10458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) Args.insert(Args.begin() + 1, Str); 10558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } else if (Edit[0] == '+') { 10658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const char *Str = 10758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) SaveStringInSet(SavedStrings, Edit.substr(1)); 1085d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) OS << "### Adding argument " << Str << " at end\n"; 10958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) Args.push_back(Str); 11058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } else if (Edit[0] == 's' && Edit[1] == '/' && Edit.endswith("/") && 11158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) Edit.slice(2, Edit.size()-1).find('/') != StringRef::npos) { 1125d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) StringRef MatchPattern = Edit.substr(2).split('/').first; 11358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) StringRef ReplPattern = Edit.substr(2).split('/').second; 11458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ReplPattern = ReplPattern.slice(0, ReplPattern.size()-1); 11558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 11658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) for (unsigned i = 1, e = Args.size(); i != e; ++i) { 11758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) std::string Repl = llvm::Regex(MatchPattern).sub(ReplPattern, Args[i]); 11858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 11958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (Repl != Args[i]) { 12058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) OS << "### Replacing '" << Args[i] << "' with '" << Repl << "'\n"; 12158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) Args[i] = SaveStringInSet(SavedStrings, Repl); 12258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 12358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 12458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } else if (Edit[0] == 'x' || Edit[0] == 'X') { 12558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) std::string Option = Edit.substr(1, std::string::npos); 12658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) for (unsigned i = 1; i < Args.size();) { 12758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (Option == Args[i]) { 12858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) OS << "### Deleting argument " << Args[i] << '\n'; 12958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) Args.erase(Args.begin() + i); 13058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (Edit[0] == 'X') { 13158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (i < Args.size()) { 13258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) OS << "### Deleting argument " << Args[i] << '\n'; 13358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) Args.erase(Args.begin() + i); 13458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } else 13558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) OS << "### Invalid X edit, end of command line!\n"; 13658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 13758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } else 138a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ++i; 13958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 14058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } else if (Edit[0] == 'O') { 14158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) for (unsigned i = 1; i < Args.size();) { 14258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const char *A = Args[i]; 14358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (A[0] == '-' && A[1] == 'O' && 14458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) (A[2] == '\0' || 1451320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci (A[3] == '\0' && (A[2] == 's' || A[2] == 'z' || 14658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ('0' <= A[2] && A[2] <= '9'))))) { 14758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) OS << "### Deleting argument " << Args[i] << '\n'; 14858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) Args.erase(Args.begin() + i); 14958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } else 15058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ++i; 15158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 15258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) OS << "### Adding argument " << Edit << " at end\n"; 1531320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci Args.push_back(SaveStringInSet(SavedStrings, '-' + Edit.str())); 15458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } else { 15558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) OS << "### Unrecognized edit: " << Edit << "\n"; 15658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 15758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 15858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 15958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// ApplyQAOverride - Apply a comma separate list of edits to the 16058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)/// input argument lists. See ApplyOneQAOverride. 16158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)static void ApplyQAOverride(SmallVectorImpl<const char*> &Args, 16258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const char *OverrideStr, 1631320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci std::set<std::string> &SavedStrings) { 16458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) raw_ostream *OS = &llvm::errs(); 16558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 16658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (OverrideStr[0] == '#') { 16758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ++OverrideStr; 16858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) OS = &llvm::nulls(); 16958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 17058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 17158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) *OS << "### QA_OVERRIDE_GCC3_OPTIONS: " << OverrideStr << "\n"; 17258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 17358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // This does not need to be efficient. 17458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 17558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const char *S = OverrideStr; 17658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) while (*S) { 17758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const char *End = ::strchr(S, ' '); 17858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (!End) 1791320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci End = S + strlen(S); 18058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (End != S) 18158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ApplyOneQAOverride(*OS, Args, std::string(S, End), SavedStrings); 18258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) S = End; 18358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (*S != '\0') 18458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ++S; 18558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 18658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 18758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 18858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)extern int cc1_main(const char **ArgBegin, const char **ArgEnd, 18958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const char *Argv0, void *MainAddr); 19058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)extern int cc1as_main(const char **ArgBegin, const char **ArgEnd, 19158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const char *Argv0, void *MainAddr); 19258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 19358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)static void ParseProgName(SmallVectorImpl<const char *> &ArgVector, 19458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) std::set<std::string> &SavedStrings, 19558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) Driver &TheDriver) 19658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles){ 19758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // Try to infer frontend type and default target from the program name. 19858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 19958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // suffixes[] contains the list of known driver suffixes. 20058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // Suffixes are compared against the program name in order. 20158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // If there is a match, the frontend type is updated as necessary (CPP/C++). 20258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // If there is no match, a second round is done after stripping the last 20358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // hyphen and everything following it. This allows using something like 20458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // "clang++-2.9". 20558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 20658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // If there is a match in either the first or second round, 20758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // the function tries to identify a target as prefix. E.g. 20858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // "x86_64-linux-clang" as interpreted as suffix "clang" with 20958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // target prefix "x86_64-linux". If such a target prefix is found, 21058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) // is gets added via -target as implicit first argument. 21158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) static const struct { 2121320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci const char *Suffix; 21358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) const char *ModeFlag; 21458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } suffixes [] = { 21558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) { "clang", 0 }, 21658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) { "clang++", "--driver-mode=g++" }, 21758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) { "clang-c++", "--driver-mode=g++" }, 21858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) { "clang-cc", 0 }, 21958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) { "clang-cpp", "--driver-mode=cpp" }, 22058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) { "clang-g++", "--driver-mode=g++" }, 22158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) { "clang-gcc", 0 }, 22258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) { "clang-cl", "--driver-mode=cl" }, 22358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) { "cc", 0 }, 22458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) { "cpp", "--driver-mode=cpp" }, 22558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) { "cl" , "--driver-mode=cl" }, 22658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) { "++", "--driver-mode=g++" }, 22758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) }; 22858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) std::string ProgName(llvm::sys::path::stem(ArgVector[0])); 22958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) StringRef ProgNameRef(ProgName); 23058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) StringRef Prefix; 23158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 23258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) for (int Components = 2; Components; --Components) { 23358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) bool FoundMatch = false; 23458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) size_t i; 23558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 23658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) for (i = 0; i < sizeof(suffixes) / sizeof(suffixes[0]); ++i) { 23758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (ProgNameRef.endswith(suffixes[i].Suffix)) { 23858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) FoundMatch = true; 23958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) SmallVectorImpl<const char *>::iterator it = ArgVector.begin(); 24058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (it != ArgVector.end()) 24158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ++it; 24258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (suffixes[i].ModeFlag) 24358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ArgVector.insert(it, suffixes[i].ModeFlag); 24458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) break; 24558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 24658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 24758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 24858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (FoundMatch) { 24958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) StringRef::size_type LastComponent = ProgNameRef.rfind('-', 25058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ProgNameRef.size() - strlen(suffixes[i].Suffix)); 25158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (LastComponent != StringRef::npos) 25258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) Prefix = ProgNameRef.slice(0, LastComponent); 25358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) break; 25458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 25558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 25658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) StringRef::size_type LastComponent = ProgNameRef.rfind('-'); 25758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (LastComponent == StringRef::npos) 25858537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) break; 25958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) ProgNameRef = ProgNameRef.slice(0, LastComponent); 26058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) } 26158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 26258537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (Prefix.empty()) 26358537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) return; 26458537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 26558537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) std::string IgnoredError; 26658537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) if (llvm::TargetRegistry::lookupTarget(Prefix, IgnoredError)) { 26758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) SmallVectorImpl<const char *>::iterator it = ArgVector.begin(); 268 if (it != ArgVector.end()) 269 ++it; 270 ArgVector.insert(it, SaveStringInSet(SavedStrings, Prefix)); 271 ArgVector.insert(it, 272 SaveStringInSet(SavedStrings, std::string("-target"))); 273 } 274} 275 276namespace { 277 class StringSetSaver : public llvm::cl::StringSaver { 278 public: 279 StringSetSaver(std::set<std::string> &Storage) : Storage(Storage) {} 280 const char *SaveString(const char *Str) LLVM_OVERRIDE { 281 return SaveStringInSet(Storage, Str); 282 } 283 private: 284 std::set<std::string> &Storage; 285 }; 286} 287 288int main(int argc_, const char **argv_) { 289 llvm::sys::PrintStackTraceOnErrorSignal(); 290 llvm::PrettyStackTraceProgram X(argc_, argv_); 291 292 std::set<std::string> SavedStrings; 293 SmallVector<const char*, 256> argv(argv_, argv_ + argc_); 294 StringSetSaver Saver(SavedStrings); 295 llvm::cl::ExpandResponseFiles(Saver, llvm::cl::TokenizeGNUCommandLine, argv); 296 297 // Handle -cc1 integrated tools. 298 if (argv.size() > 1 && StringRef(argv[1]).startswith("-cc1")) { 299 StringRef Tool = argv[1] + 4; 300 301 if (Tool == "") 302 return cc1_main(argv.data()+2, argv.data()+argv.size(), argv[0], 303 (void*) (intptr_t) GetExecutablePath); 304 if (Tool == "as") 305 return cc1as_main(argv.data()+2, argv.data()+argv.size(), argv[0], 306 (void*) (intptr_t) GetExecutablePath); 307 308 // Reject unknown tools. 309 llvm::errs() << "error: unknown integrated tool '" << Tool << "'\n"; 310 return 1; 311 } 312 313 bool CanonicalPrefixes = true; 314 for (int i = 1, size = argv.size(); i < size; ++i) { 315 if (StringRef(argv[i]) == "-no-canonical-prefixes") { 316 CanonicalPrefixes = false; 317 break; 318 } 319 } 320 321 // Handle QA_OVERRIDE_GCC3_OPTIONS and CCC_ADD_ARGS, used for editing a 322 // command line behind the scenes. 323 if (const char *OverrideStr = ::getenv("QA_OVERRIDE_GCC3_OPTIONS")) { 324 // FIXME: Driver shouldn't take extra initial argument. 325 ApplyQAOverride(argv, OverrideStr, SavedStrings); 326 } else if (const char *Cur = ::getenv("CCC_ADD_ARGS")) { 327 // FIXME: Driver shouldn't take extra initial argument. 328 std::vector<const char*> ExtraArgs; 329 330 for (;;) { 331 const char *Next = strchr(Cur, ','); 332 333 if (Next) { 334 ExtraArgs.push_back(SaveStringInSet(SavedStrings, 335 std::string(Cur, Next))); 336 Cur = Next + 1; 337 } else { 338 if (*Cur != '\0') 339 ExtraArgs.push_back(SaveStringInSet(SavedStrings, Cur)); 340 break; 341 } 342 } 343 344 argv.insert(&argv[1], ExtraArgs.begin(), ExtraArgs.end()); 345 } 346 347 std::string Path = GetExecutablePath(argv[0], CanonicalPrefixes); 348 349 IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions; 350 { 351 // Note that ParseDiagnosticArgs() uses the cc1 option table. 352 OwningPtr<OptTable> CC1Opts(createDriverOptTable()); 353 unsigned MissingArgIndex, MissingArgCount; 354 OwningPtr<InputArgList> Args(CC1Opts->ParseArgs(argv.begin()+1, argv.end(), 355 MissingArgIndex, MissingArgCount)); 356 // We ignore MissingArgCount and the return value of ParseDiagnosticArgs. 357 // Any errors that would be diagnosed here will also be diagnosed later, 358 // when the DiagnosticsEngine actually exists. 359 (void) ParseDiagnosticArgs(*DiagOpts, *Args); 360 } 361 // Now we can create the DiagnosticsEngine with a properly-filled-out 362 // DiagnosticOptions instance. 363 TextDiagnosticPrinter *DiagClient 364 = new TextDiagnosticPrinter(llvm::errs(), &*DiagOpts); 365 DiagClient->setPrefix(llvm::sys::path::filename(Path)); 366 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs()); 367 368 DiagnosticsEngine Diags(DiagID, &*DiagOpts, DiagClient); 369 ProcessWarningOptions(Diags, *DiagOpts, /*ReportDiags=*/false); 370 371 Driver TheDriver(Path, llvm::sys::getDefaultTargetTriple(), "a.out", Diags); 372 373 // Attempt to find the original path used to invoke the driver, to determine 374 // the installed path. We do this manually, because we want to support that 375 // path being a symlink. 376 { 377 SmallString<128> InstalledPath(argv[0]); 378 379 // Do a PATH lookup, if there are no directory components. 380 if (llvm::sys::path::filename(InstalledPath) == InstalledPath) { 381 std::string Tmp = llvm::sys::FindProgramByName( 382 llvm::sys::path::filename(InstalledPath.str())); 383 if (!Tmp.empty()) 384 InstalledPath = Tmp; 385 } 386 llvm::sys::fs::make_absolute(InstalledPath); 387 InstalledPath = llvm::sys::path::parent_path(InstalledPath); 388 bool exists; 389 if (!llvm::sys::fs::exists(InstalledPath.str(), exists) && exists) 390 TheDriver.setInstalledDir(InstalledPath); 391 } 392 393 llvm::InitializeAllTargets(); 394 ParseProgName(argv, SavedStrings, TheDriver); 395 396 // Handle CC_PRINT_OPTIONS and CC_PRINT_OPTIONS_FILE. 397 TheDriver.CCPrintOptions = !!::getenv("CC_PRINT_OPTIONS"); 398 if (TheDriver.CCPrintOptions) 399 TheDriver.CCPrintOptionsFilename = ::getenv("CC_PRINT_OPTIONS_FILE"); 400 401 // Handle CC_PRINT_HEADERS and CC_PRINT_HEADERS_FILE. 402 TheDriver.CCPrintHeaders = !!::getenv("CC_PRINT_HEADERS"); 403 if (TheDriver.CCPrintHeaders) 404 TheDriver.CCPrintHeadersFilename = ::getenv("CC_PRINT_HEADERS_FILE"); 405 406 // Handle CC_LOG_DIAGNOSTICS and CC_LOG_DIAGNOSTICS_FILE. 407 TheDriver.CCLogDiagnostics = !!::getenv("CC_LOG_DIAGNOSTICS"); 408 if (TheDriver.CCLogDiagnostics) 409 TheDriver.CCLogDiagnosticsFilename = ::getenv("CC_LOG_DIAGNOSTICS_FILE"); 410 411 OwningPtr<Compilation> C(TheDriver.BuildCompilation(argv)); 412 int Res = 0; 413 SmallVector<std::pair<int, const Command *>, 4> FailingCommands; 414 if (C.get()) 415 Res = TheDriver.ExecuteCompilation(*C, FailingCommands); 416 417 // Force a crash to test the diagnostics. 418 if (::getenv("FORCE_CLANG_DIAGNOSTICS_CRASH")) { 419 Diags.Report(diag::err_drv_force_crash) << "FORCE_CLANG_DIAGNOSTICS_CRASH"; 420 const Command *FailingCommand = 0; 421 FailingCommands.push_back(std::make_pair(-1, FailingCommand)); 422 } 423 424 for (SmallVectorImpl< std::pair<int, const Command *> >::iterator it = 425 FailingCommands.begin(), ie = FailingCommands.end(); it != ie; ++it) { 426 int CommandRes = it->first; 427 const Command *FailingCommand = it->second; 428 if (!Res) 429 Res = CommandRes; 430 431 // If result status is < 0, then the driver command signalled an error. 432 // If result status is 70, then the driver command reported a fatal error. 433 // In these cases, generate additional diagnostic information if possible. 434 if (CommandRes < 0 || CommandRes == 70) { 435 TheDriver.generateCompilationDiagnostics(*C, FailingCommand); 436 break; 437 } 438 } 439 440 // If any timers were active but haven't been destroyed yet, print their 441 // results now. This happens in -disable-free mode. 442 llvm::TimerGroup::printAll(llvm::errs()); 443 444 llvm::llvm_shutdown(); 445 446#ifdef _WIN32 447 // Exit status should not be negative on Win32, unless abnormal termination. 448 // Once abnormal termiation was caught, negative status should not be 449 // propagated. 450 if (Res < 0) 451 Res = 1; 452#endif 453 454 // If we have multiple failing commands, we return the result of the first 455 // failing command. 456 return Res; 457} 458