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3c6f47d6b8
Previously, some tools such as `clang` or `lld` which require strict order for certain command-line options, such as `clang -cc1` or `lld -flavor`, would not longer work on Windows, when these tools were linked as part of `llvm-driver`. This was caused by `InitLLVM` which was part of the `*_main()` function of these tools, which in turn calls `windows::GetCommandLineArguments`. That function completly replaces argc/argv by new UTF-8 contents, so any ajustements to argc/argv made by `llvm-driver` prior to calling these tools was reset. `InitLLVM` is now called by the `llvm-driver`. Any tool that participates in (or is part of) the `llvm-driver` doesn't call `InitLLVM` anymore.
87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
//===-- llvm-driver.cpp ---------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/InitLLVM.h"
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#include "llvm/Support/LLVMDriver.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/WithColor.h"
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using namespace llvm;
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#define LLVM_DRIVER_TOOL(tool, entry) \
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int entry##_main(int argc, char **argv, const llvm::ToolContext &);
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#include "LLVMDriverTools.def"
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constexpr char subcommands[] =
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#define LLVM_DRIVER_TOOL(tool, entry) " " tool "\n"
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#include "LLVMDriverTools.def"
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;
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static void printHelpMessage() {
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llvm::outs() << "OVERVIEW: llvm toolchain driver\n\n"
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<< "USAGE: llvm [subcommand] [options]\n\n"
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<< "SUBCOMMANDS:\n\n"
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<< subcommands
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<< "\n Type \"llvm <subcommand> --help\" to get more help on a "
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"specific subcommand\n\n"
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<< "OPTIONS:\n\n --help - Display this message";
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}
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static int findTool(int Argc, char **Argv, const char *Argv0) {
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if (!Argc) {
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printHelpMessage();
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return 1;
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}
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StringRef ToolName = Argv[0];
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if (ToolName == "--help") {
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printHelpMessage();
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return 0;
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}
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StringRef Stem = sys::path::stem(ToolName);
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auto Is = [=](StringRef Tool) {
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auto IsImpl = [=](StringRef Stem) {
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auto I = Stem.rfind_insensitive(Tool);
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return I != StringRef::npos && (I + Tool.size() == Stem.size() ||
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!llvm::isAlnum(Stem[I + Tool.size()]));
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};
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for (StringRef S : {Stem, sys::path::filename(ToolName)})
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if (IsImpl(S))
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return true;
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return false;
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};
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auto MakeDriverArgs = [=]() -> llvm::ToolContext {
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if (ToolName != Argv0)
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return {Argv0, ToolName.data(), true};
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return {Argv0, sys::path::filename(Argv0).data(), false};
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};
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#define LLVM_DRIVER_TOOL(tool, entry) \
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if (Is(tool)) \
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return entry##_main(Argc, Argv, MakeDriverArgs());
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#include "LLVMDriverTools.def"
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if (Is("llvm") || Argv0 == Argv[0])
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return findTool(Argc - 1, Argv + 1, Argv0);
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printHelpMessage();
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return 1;
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}
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int main(int Argc, char **Argv) {
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llvm::InitLLVM X(Argc, Argv);
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return findTool(Argc, Argv, Argv[0]);
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}
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