driver.cpp revision 651f13cea278ec967336033dd032faef0e9fc2ec
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//===-- driver.cpp - Clang GCC-Compatible Driver --------------------------===// 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// The LLVM Compiler Infrastructure 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This file is distributed under the University of Illinois Open Source 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// License. See LICENSE.TXT for details. 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//===----------------------------------------------------------------------===// 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This is the entry point to the clang driver; it is a thin wrapper 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// for functionality in the Driver clang library. 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//===----------------------------------------------------------------------===// 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/Basic/CharInfo.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/Basic/DiagnosticOptions.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/Driver/Compilation.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/Driver/Driver.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/Driver/DriverDiagnostic.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/Driver/Options.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/Frontend/CompilerInvocation.h" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/Frontend/TextDiagnosticPrinter.h" 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "clang/Frontend/Utils.h" 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/ADT/ArrayRef.h" 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/ADT/STLExtras.h" 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/ADT/SmallString.h" 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/ADT/SmallVector.h" 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Config/config.h" 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Option/ArgList.h" 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Option/OptTable.h" 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Option/Option.h" 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/CommandLine.h" 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/ErrorHandling.h" 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/FileSystem.h" 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/Host.h" 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/ManagedStatic.h" 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/MemoryBuffer.h" 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/Path.h" 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/PrettyStackTrace.h" 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/Process.h" 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/Program.h" 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/Regex.h" 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/Signals.h" 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/TargetRegistry.h" 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/TargetSelect.h" 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/Timer.h" 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/raw_ostream.h" 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "llvm/Support/system_error.h" 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <memory> 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using namespace clang; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using namespace clang::driver; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using namespace llvm::opt; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)std::string GetExecutablePath(const char *Argv0, bool CanonicalPrefixes) { 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!CanonicalPrefixes) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Argv0; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This just needs to be some symbol in the binary; C++ doesn't 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // allow taking the address of ::main however. 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void *P = (void*) (intptr_t) GetExecutablePath; 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return llvm::sys::fs::getMainExecutable(Argv0, P); 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static const char *SaveStringInSet(std::set<std::string> &SavedStrings, 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StringRef S) { 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return SavedStrings.insert(S).first->c_str(); 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// ApplyQAOverride - Apply a list of edits to the input argument lists. 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// The input string is a space separate list of edits to perform, 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// they are applied in order to the input argument lists. Edits 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// should be one of the following forms: 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// '#': Silence information about the changes to the command line arguments. 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// '^': Add FOO as a new argument at the beginning of the command line. 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// '+': Add FOO as a new argument at the end of the command line. 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 's/XXX/YYY/': Substitute the regular expression XXX with YYY in the command 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// line. 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 'xOPTION': Removes all instances of the literal argument OPTION. 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 'XOPTION': Removes all instances of the literal argument OPTION, 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// and the following argument. 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 'Ox': Removes all flags matching 'O' or 'O[sz0-9]' and adds 'Ox' 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// at the end of the command line. 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// \param OS - The stream to write edit information to. 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// \param Args - The vector of command line arguments. 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// \param Edit - The override command to perform. 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// \param SavedStrings - Set to use for storing string representations. 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static void ApplyOneQAOverride(raw_ostream &OS, 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SmallVectorImpl<const char*> &Args, 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StringRef Edit, 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::set<std::string> &SavedStrings) { 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This does not need to be efficient. 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (Edit[0] == '^') { 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char *Str = 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SaveStringInSet(SavedStrings, Edit.substr(1)); 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OS << "### Adding argument " << Str << " at beginning\n"; 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Args.insert(Args.begin() + 1, Str); 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (Edit[0] == '+') { 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char *Str = 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SaveStringInSet(SavedStrings, Edit.substr(1)); 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OS << "### Adding argument " << Str << " at end\n"; 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Args.push_back(Str); 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (Edit[0] == 's' && Edit[1] == '/' && Edit.endswith("/") && 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Edit.slice(2, Edit.size()-1).find('/') != StringRef::npos) { 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StringRef MatchPattern = Edit.substr(2).split('/').first; 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StringRef ReplPattern = Edit.substr(2).split('/').second; 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReplPattern = ReplPattern.slice(0, ReplPattern.size()-1); 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (unsigned i = 1, e = Args.size(); i != e; ++i) { 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string Repl = llvm::Regex(MatchPattern).sub(ReplPattern, Args[i]); 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (Repl != Args[i]) { 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OS << "### Replacing '" << Args[i] << "' with '" << Repl << "'\n"; 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Args[i] = SaveStringInSet(SavedStrings, Repl); 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (Edit[0] == 'x' || Edit[0] == 'X') { 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string Option = Edit.substr(1, std::string::npos); 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (unsigned i = 1; i < Args.size();) { 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (Option == Args[i]) { 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OS << "### Deleting argument " << Args[i] << '\n'; 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Args.erase(Args.begin() + i); 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (Edit[0] == 'X') { 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (i < Args.size()) { 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OS << "### Deleting argument " << Args[i] << '\n'; 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Args.erase(Args.begin() + i); 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OS << "### Invalid X edit, end of command line!\n"; 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ++i; 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else if (Edit[0] == 'O') { 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (unsigned i = 1; i < Args.size();) { 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char *A = Args[i]; 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (A[0] == '-' && A[1] == 'O' && 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (A[2] == '\0' || 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (A[3] == '\0' && (A[2] == 's' || A[2] == 'z' || 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ('0' <= A[2] && A[2] <= '9'))))) { 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OS << "### Deleting argument " << Args[i] << '\n'; 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Args.erase(Args.begin() + i); 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ++i; 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OS << "### Adding argument " << Edit << " at end\n"; 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Args.push_back(SaveStringInSet(SavedStrings, '-' + Edit.str())); 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OS << "### Unrecognized edit: " << Edit << "\n"; 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// ApplyQAOverride - Apply a comma separate list of edits to the 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/// input argument lists. See ApplyOneQAOverride. 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static void ApplyQAOverride(SmallVectorImpl<const char*> &Args, 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char *OverrideStr, 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::set<std::string> &SavedStrings) { 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) raw_ostream *OS = &llvm::errs(); 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (OverrideStr[0] == '#') { 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ++OverrideStr; 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OS = &llvm::nulls(); 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *OS << "### CCC_OVERRIDE_OPTIONS: " << OverrideStr << "\n"; 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This does not need to be efficient. 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char *S = OverrideStr; 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) while (*S) { 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char *End = ::strchr(S, ' '); 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!End) 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) End = S + strlen(S); 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (End != S) 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ApplyOneQAOverride(*OS, Args, std::string(S, End), SavedStrings); 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) S = End; 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (*S != '\0') 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ++S; 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern int cc1_main(const char **ArgBegin, const char **ArgEnd, 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char *Argv0, void *MainAddr); 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern int cc1as_main(const char **ArgBegin, const char **ArgEnd, 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char *Argv0, void *MainAddr); 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static void ParseProgName(SmallVectorImpl<const char *> &ArgVector, 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::set<std::string> &SavedStrings, 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Driver &TheDriver) 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Try to infer frontend type and default target from the program name. 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // suffixes[] contains the list of known driver suffixes. 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Suffixes are compared against the program name in order. 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If there is a match, the frontend type is updated as necessary (CPP/C++). 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If there is no match, a second round is done after stripping the last 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // hyphen and everything following it. This allows using something like 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // "clang++-2.9". 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If there is a match in either the first or second round, 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the function tries to identify a target as prefix. E.g. 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // "x86_64-linux-clang" as interpreted as suffix "clang" with 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // target prefix "x86_64-linux". If such a target prefix is found, 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // is gets added via -target as implicit first argument. 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const struct { 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char *Suffix; 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char *ModeFlag; 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } suffixes [] = { 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { "clang", 0 }, 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { "clang++", "--driver-mode=g++" }, 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { "clang-c++", "--driver-mode=g++" }, 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { "clang-cc", 0 }, 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { "clang-cpp", "--driver-mode=cpp" }, 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { "clang-g++", "--driver-mode=g++" }, 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { "clang-gcc", 0 }, 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { "clang-cl", "--driver-mode=cl" }, 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { "cc", 0 }, 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { "cpp", "--driver-mode=cpp" }, 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { "cl" , "--driver-mode=cl" }, 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { "++", "--driver-mode=g++" }, 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string ProgName(llvm::sys::path::stem(ArgVector[0])); 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef LLVM_ON_WIN32 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Transform to lowercase for case insensitive file systems. 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::transform(ProgName.begin(), ProgName.end(), ProgName.begin(), 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) toLowercase); 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StringRef ProgNameRef(ProgName); 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StringRef Prefix; 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int Components = 2; Components; --Components) { 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool FoundMatch = false; 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_t i; 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (i = 0; i < sizeof(suffixes) / sizeof(suffixes[0]); ++i) { 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (ProgNameRef.endswith(suffixes[i].Suffix)) { 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FoundMatch = true; 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SmallVectorImpl<const char *>::iterator it = ArgVector.begin(); 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (it != ArgVector.end()) 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ++it; 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (suffixes[i].ModeFlag) 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ArgVector.insert(it, suffixes[i].ModeFlag); 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (FoundMatch) { 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StringRef::size_type LastComponent = ProgNameRef.rfind('-', 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ProgNameRef.size() - strlen(suffixes[i].Suffix)); 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (LastComponent != StringRef::npos) 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Prefix = ProgNameRef.slice(0, LastComponent); 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StringRef::size_type LastComponent = ProgNameRef.rfind('-'); 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (LastComponent == StringRef::npos) 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ProgNameRef = ProgNameRef.slice(0, LastComponent); 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (Prefix.empty()) 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string IgnoredError; 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (llvm::TargetRegistry::lookupTarget(Prefix, IgnoredError)) { 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SmallVectorImpl<const char *>::iterator it = ArgVector.begin(); 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (it != ArgVector.end()) 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ++it; 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char* Strings[] = 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { SaveStringInSet(SavedStrings, std::string("-target")), 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SaveStringInSet(SavedStrings, Prefix) }; 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ArgVector.insert(it, Strings, Strings + llvm::array_lengthof(Strings)); 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class StringSetSaver : public llvm::cl::StringSaver { 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StringSetSaver(std::set<std::string> &Storage) : Storage(Storage) {} 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char *SaveString(const char *Str) override { 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return SaveStringInSet(Storage, Str); 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::set<std::string> &Storage; 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int main(int argc_, const char **argv_) { 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) llvm::sys::PrintStackTraceOnErrorSignal(); 2985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) llvm::PrettyStackTraceProgram X(argc_, argv_); 2995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SmallVector<const char *, 256> argv; 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) llvm::SpecificBumpPtrAllocator<char> ArgAllocator; 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) llvm::error_code EC = llvm::sys::Process::GetArgumentVector( 3035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) argv, llvm::ArrayRef<const char *>(argv_, argc_), ArgAllocator); 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (EC) { 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) llvm::errs() << "error: couldn't get arguments: " << EC.message() << '\n'; 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 1; 307 } 308 309 std::set<std::string> SavedStrings; 310 StringSetSaver Saver(SavedStrings); 311 llvm::cl::ExpandResponseFiles(Saver, llvm::cl::TokenizeGNUCommandLine, argv); 312 313 // Handle -cc1 integrated tools. 314 if (argv.size() > 1 && StringRef(argv[1]).startswith("-cc1")) { 315 StringRef Tool = argv[1] + 4; 316 317 if (Tool == "") 318 return cc1_main(argv.data()+2, argv.data()+argv.size(), argv[0], 319 (void*) (intptr_t) GetExecutablePath); 320 if (Tool == "as") 321 return cc1as_main(argv.data()+2, argv.data()+argv.size(), argv[0], 322 (void*) (intptr_t) GetExecutablePath); 323 324 // Reject unknown tools. 325 llvm::errs() << "error: unknown integrated tool '" << Tool << "'\n"; 326 return 1; 327 } 328 329 bool CanonicalPrefixes = true; 330 for (int i = 1, size = argv.size(); i < size; ++i) { 331 if (StringRef(argv[i]) == "-no-canonical-prefixes") { 332 CanonicalPrefixes = false; 333 break; 334 } 335 } 336 337 // Handle CCC_OVERRIDE_OPTIONS, used for editing a command line behind the 338 // scenes. 339 if (const char *OverrideStr = ::getenv("CCC_OVERRIDE_OPTIONS")) { 340 // FIXME: Driver shouldn't take extra initial argument. 341 ApplyQAOverride(argv, OverrideStr, SavedStrings); 342 } 343 344 std::string Path = GetExecutablePath(argv[0], CanonicalPrefixes); 345 346 IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions; 347 { 348 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 349 unsigned MissingArgIndex, MissingArgCount; 350 std::unique_ptr<InputArgList> Args(Opts->ParseArgs( 351 argv.begin() + 1, argv.end(), MissingArgIndex, MissingArgCount)); 352 // We ignore MissingArgCount and the return value of ParseDiagnosticArgs. 353 // Any errors that would be diagnosed here will also be diagnosed later, 354 // when the DiagnosticsEngine actually exists. 355 (void) ParseDiagnosticArgs(*DiagOpts, *Args); 356 } 357 // Now we can create the DiagnosticsEngine with a properly-filled-out 358 // DiagnosticOptions instance. 359 TextDiagnosticPrinter *DiagClient 360 = new TextDiagnosticPrinter(llvm::errs(), &*DiagOpts); 361 362 // If the clang binary happens to be named cl.exe for compatibility reasons, 363 // use clang-cl.exe as the prefix to avoid confusion between clang and MSVC. 364 StringRef ExeBasename(llvm::sys::path::filename(Path)); 365 if (ExeBasename.equals_lower("cl.exe")) 366 ExeBasename = "clang-cl.exe"; 367 DiagClient->setPrefix(ExeBasename); 368 369 IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs()); 370 371 DiagnosticsEngine Diags(DiagID, &*DiagOpts, DiagClient); 372 ProcessWarningOptions(Diags, *DiagOpts, /*ReportDiags=*/false); 373 374 Driver TheDriver(Path, llvm::sys::getDefaultTargetTriple(), "a.out", Diags); 375 376 // Attempt to find the original path used to invoke the driver, to determine 377 // the installed path. We do this manually, because we want to support that 378 // path being a symlink. 379 { 380 SmallString<128> InstalledPath(argv[0]); 381 382 // Do a PATH lookup, if there are no directory components. 383 if (llvm::sys::path::filename(InstalledPath) == InstalledPath) { 384 std::string Tmp = llvm::sys::FindProgramByName( 385 llvm::sys::path::filename(InstalledPath.str())); 386 if (!Tmp.empty()) 387 InstalledPath = Tmp; 388 } 389 llvm::sys::fs::make_absolute(InstalledPath); 390 InstalledPath = llvm::sys::path::parent_path(InstalledPath); 391 bool exists; 392 if (!llvm::sys::fs::exists(InstalledPath.str(), exists) && exists) 393 TheDriver.setInstalledDir(InstalledPath); 394 } 395 396 llvm::InitializeAllTargets(); 397 ParseProgName(argv, SavedStrings, TheDriver); 398 399 // Handle CC_PRINT_OPTIONS and CC_PRINT_OPTIONS_FILE. 400 TheDriver.CCPrintOptions = !!::getenv("CC_PRINT_OPTIONS"); 401 if (TheDriver.CCPrintOptions) 402 TheDriver.CCPrintOptionsFilename = ::getenv("CC_PRINT_OPTIONS_FILE"); 403 404 // Handle CC_PRINT_HEADERS and CC_PRINT_HEADERS_FILE. 405 TheDriver.CCPrintHeaders = !!::getenv("CC_PRINT_HEADERS"); 406 if (TheDriver.CCPrintHeaders) 407 TheDriver.CCPrintHeadersFilename = ::getenv("CC_PRINT_HEADERS_FILE"); 408 409 // Handle CC_LOG_DIAGNOSTICS and CC_LOG_DIAGNOSTICS_FILE. 410 TheDriver.CCLogDiagnostics = !!::getenv("CC_LOG_DIAGNOSTICS"); 411 if (TheDriver.CCLogDiagnostics) 412 TheDriver.CCLogDiagnosticsFilename = ::getenv("CC_LOG_DIAGNOSTICS_FILE"); 413 414 std::unique_ptr<Compilation> C(TheDriver.BuildCompilation(argv)); 415 int Res = 0; 416 SmallVector<std::pair<int, const Command *>, 4> FailingCommands; 417 if (C.get()) 418 Res = TheDriver.ExecuteCompilation(*C, FailingCommands); 419 420 // Force a crash to test the diagnostics. 421 if (::getenv("FORCE_CLANG_DIAGNOSTICS_CRASH")) { 422 Diags.Report(diag::err_drv_force_crash) << "FORCE_CLANG_DIAGNOSTICS_CRASH"; 423 const Command *FailingCommand = 0; 424 FailingCommands.push_back(std::make_pair(-1, FailingCommand)); 425 } 426 427 for (SmallVectorImpl< std::pair<int, const Command *> >::iterator it = 428 FailingCommands.begin(), ie = FailingCommands.end(); it != ie; ++it) { 429 int CommandRes = it->first; 430 const Command *FailingCommand = it->second; 431 if (!Res) 432 Res = CommandRes; 433 434 // If result status is < 0, then the driver command signalled an error. 435 // If result status is 70, then the driver command reported a fatal error. 436 // In these cases, generate additional diagnostic information if possible. 437 if (CommandRes < 0 || CommandRes == 70) { 438 TheDriver.generateCompilationDiagnostics(*C, FailingCommand); 439 break; 440 } 441 } 442 443 // If any timers were active but haven't been destroyed yet, print their 444 // results now. This happens in -disable-free mode. 445 llvm::TimerGroup::printAll(llvm::errs()); 446 447 llvm::llvm_shutdown(); 448 449#ifdef LLVM_ON_WIN32 450 // Exit status should not be negative on Win32, unless abnormal termination. 451 // Once abnormal termiation was caught, negative status should not be 452 // propagated. 453 if (Res < 0) 454 Res = 1; 455#endif 456 457 // If we have multiple failing commands, we return the result of the first 458 // failing command. 459 return Res; 460} 461