llvm-mirror/lib/Support/InitLLVM.cpp
Hans Wennborg 34b8d5cba5 llvm-ar: Fix MinGW compilation
llvm-ar is using CompareStringOrdinal which is available
only starting with Windows Vista (WINVER 0x600).

Fix this by hoising WindowsSupport.h, which sets _WIN32_WINNT
to 0x0601, up to llvm/include/llvm/Support and use it in llvm-ar.

Patch by Cristian Adam!

Differential revision: https://reviews.llvm.org/D74599
2020-02-28 09:59:24 +01:00

57 lines
1.9 KiB
C++

//===-- InitLLVM.cpp -----------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/Signals.h"
#include <string>
#ifdef _WIN32
#include "llvm/Support/Windows/WindowsSupport.h"
#endif
using namespace llvm;
using namespace llvm::sys;
InitLLVM::InitLLVM(int &Argc, const char **&Argv,
bool InstallPipeSignalExitHandler)
: StackPrinter(Argc, Argv) {
if (InstallPipeSignalExitHandler)
sys::SetOneShotPipeSignalFunction(sys::DefaultOneShotPipeSignalHandler);
sys::PrintStackTraceOnErrorSignal(Argv[0]);
install_out_of_memory_new_handler();
#ifdef _WIN32
// We use UTF-8 as the internal character encoding. On Windows,
// arguments passed to main() may not be encoded in UTF-8. In order
// to reliably detect encoding of command line arguments, we use an
// Windows API to obtain arguments, convert them to UTF-8, and then
// write them back to the Argv vector.
//
// There's probably other way to do the same thing (e.g. using
// wmain() instead of main()), but this way seems less intrusive
// than that.
std::string Banner = std::string(Argv[0]) + ": ";
ExitOnError ExitOnErr(Banner);
ExitOnErr(errorCodeToError(windows::GetCommandLineArguments(Args, Alloc)));
// GetCommandLineArguments doesn't terminate the vector with a
// nullptr. Do it to make it compatible with the real argv.
Args.push_back(nullptr);
Argc = Args.size() - 1;
Argv = Args.data();
#endif
}
InitLLVM::~InitLLVM() { llvm_shutdown(); }