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//===- SystemUtils.cpp - Utilities for low-level system tasks -------------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains functions used to do a variety of low-level, often
// system-specific, tasks.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/Streams.h"
#include "llvm/Support/SystemUtils.h"
#include "llvm/System/Process.h"
#include "llvm/System/Program.h"
#include <ostream>
using namespace llvm;
bool llvm::CheckBitcodeOutputToConsole(std::ostream* stream_to_check,
bool print_warning) {
if (stream_to_check == cout.stream() &&
sys::Process::StandardOutIsDisplayed()) {
if (print_warning) {
cerr << "WARNING: You're attempting to print out a bitcode file.\n"
<< "This is inadvisable as it may cause display problems. If\n"
<< "you REALLY want to taste LLVM bitcode first-hand, you\n"
<< "can force output with the `-f' option.\n\n";
}
return true;
}
return false;
}
/// FindExecutable - Find a named executable, giving the argv[0] of program
/// being executed. This allows us to find another LLVM tool if it is built
/// into the same directory, but that directory is neither the current
/// directory, nor in the PATH. If the executable cannot be found, return an
/// empty string.
///
#undef FindExecutable // needed on windows :(
sys::Path llvm::FindExecutable(const std::string &ExeName,
const std::string &ProgramPath) {
// First check the directory that the calling program is in. We can do this
// if ProgramPath contains at least one / character, indicating that it is a
// relative path to bugpoint itself.
sys::Path Result ( ProgramPath );
Result.eraseComponent();
if (!Result.isEmpty()) {
Result.appendComponent(ExeName);
if (Result.canExecute())
return Result;
}
return sys::Program::FindProgramByName(ExeName);
}
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