1 //===-- InitLLVM.cpp -----------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/Support/InitLLVM.h" 10 #include "llvm/Support/Error.h" 11 #include "llvm/Support/ManagedStatic.h" 12 #include "llvm/Support/PrettyStackTrace.h" 13 #include "llvm/Support/Process.h" 14 #include "llvm/Support/Signals.h" 15 #include <string> 16 17 #ifdef _WIN32 18 #include "Windows/WindowsSupport.h" 19 #endif 20 21 using namespace llvm; 22 using namespace llvm::sys; 23 24 InitLLVM::InitLLVM(int &Argc, const char **&Argv) : StackPrinter(Argc, Argv) { 25 sys::PrintStackTraceOnErrorSignal(Argv[0]); 26 27 #ifdef _WIN32 28 // We use UTF-8 as the internal character encoding. On Windows, 29 // arguments passed to main() may not be encoded in UTF-8. In order 30 // to reliably detect encoding of command line arguments, we use an 31 // Windows API to obtain arguments, convert them to UTF-8, and then 32 // write them back to the Argv vector. 33 // 34 // There's probably other way to do the same thing (e.g. using 35 // wmain() instead of main()), but this way seems less intrusive 36 // than that. 37 std::string Banner = std::string(Argv[0]) + ": "; 38 ExitOnError ExitOnErr(Banner); 39 40 ExitOnErr(errorCodeToError(windows::GetCommandLineArguments(Args, Alloc))); 41 42 // GetCommandLineArguments doesn't terminate the vector with a 43 // nullptr. Do it to make it compatible with the real argv. 44 Args.push_back(nullptr); 45 46 Argc = Args.size() - 1; 47 Argv = Args.data(); 48 #endif 49 } 50 51 InitLLVM::~InitLLVM() { llvm_shutdown(); } 52