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f188178a2f
Move the code from 'llvmc/driver' into a new CompilerDriver library, and change the build system accordingly. Makes it easier for projects using LLVM to build their own llvmc-based drivers. Tested with objdir != srcdir. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65821 91177308-0d34-0410-b5e6-96231b3b80d8
79 lines
2.1 KiB
C++
79 lines
2.1 KiB
C++
//===--- Action.cpp - The LLVM Compiler Driver ------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open
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// Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Action class - implementation and auxiliary functions.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CompilerDriver/Action.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/System/Program.h"
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#include <iostream>
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#include <stdexcept>
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using namespace llvm;
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using namespace llvmc;
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extern cl::opt<bool> DryRun;
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extern cl::opt<bool> VerboseMode;
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namespace {
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int ExecuteProgram(const std::string& name,
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const StrVector& args) {
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sys::Path prog = sys::Program::FindProgramByName(name);
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if (prog.isEmpty())
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throw std::runtime_error("Can't find program '" + name + "'");
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if (!prog.canExecute())
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throw std::runtime_error("Program '" + name + "' is not executable.");
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// Build the command line vector and the redirects array.
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const sys::Path* redirects[3] = {0,0,0};
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sys::Path stdout_redirect;
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std::vector<const char*> argv;
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argv.reserve((args.size()+2));
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argv.push_back(name.c_str());
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for (StrVector::const_iterator B = args.begin(), E = args.end();
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B!=E; ++B) {
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if (*B == ">") {
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++B;
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stdout_redirect.set(*B);
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redirects[1] = &stdout_redirect;
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}
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else {
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argv.push_back((*B).c_str());
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}
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}
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argv.push_back(0); // null terminate list.
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// Invoke the program.
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return sys::Program::ExecuteAndWait(prog, &argv[0], 0, &redirects[0]);
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}
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void print_string (const std::string& str) {
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std::cerr << str << ' ';
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}
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}
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int llvmc::Action::Execute() const {
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if (DryRun || VerboseMode) {
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std::cerr << Command_ << " ";
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std::for_each(Args_.begin(), Args_.end(), print_string);
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std::cerr << '\n';
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}
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if (DryRun)
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return 0;
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else
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return ExecuteProgram(Command_, Args_);
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}
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