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//===- SystemUtils.cpp - Utilities for low-level system tasks -------------===//
//
// The LLVM Compiler Infrastructure
//
// This file 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/SystemUtils.h"
#include "llvm/System/Process.h"
#include "llvm/System/Program.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
bool llvm::CheckBitcodeOutputToConsole(raw_ostream &stream_to_check,
bool print_warning) {
if (&stream_to_check == &outs() &&
sys::Process::StandardOutIsDisplayed()) {
if (print_warning) {
errs() << "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 in
/// the same directory. If the executable cannot be found, return an
/// empty string.
/// @brief Find a named executable.
#undef FindExecutable // needed on windows :(
sys::Path llvm::FindExecutable(const std::string &ExeName,
const char *Argv0, void *MainAddr) {
// 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 the executable itself.
sys::Path Result = sys::Path::GetMainExecutable(Argv0, MainAddr);
Result.eraseComponent();
if (!Result.isEmpty()) {
Result.appendComponent(ExeName);
if (Result.canExecute())
return Result;
}
return sys::Path();
}
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