1 //===- SystemUtils.cpp - Utilities for low-level system tasks -------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains functions used to do a variety of low-level, often
11 // system-specific, tasks.
13 //===----------------------------------------------------------------------===//
15 #include "llvm/Support/SystemUtils.h"
16 #include "llvm/System/Process.h"
17 #include "llvm/System/Program.h"
18 #include "llvm/Support/raw_ostream.h"
21 bool llvm::CheckBitcodeOutputToConsole(raw_ostream &stream_to_check,
23 if (stream_to_check.is_displayed()) {
25 errs() << "WARNING: You're attempting to print out a bitcode file.\n"
26 << "This is inadvisable as it may cause display problems. If\n"
27 << "you REALLY want to taste LLVM bitcode first-hand, you\n"
28 << "can force output with the `-f' option.\n\n";
35 /// FindExecutable - Find a named executable, giving the argv[0] of program
36 /// being executed. This allows us to find another LLVM tool if it is built in
37 /// the same directory. If the executable cannot be found, return an
39 /// @brief Find a named executable.
40 #undef FindExecutable // needed on windows :(
41 sys::Path llvm::FindExecutable(const std::string &ExeName,
42 const char *Argv0, void *MainAddr) {
43 // Check the directory that the calling program is in. We can do
44 // this if ProgramPath contains at least one / character, indicating that it
45 // is a relative path to the executable itself.
46 sys::Path Result = sys::Path::GetMainExecutable(Argv0, MainAddr);
47 Result.eraseComponent();
48 if (!Result.isEmpty()) {
49 Result.appendComponent(ExeName);
50 if (Result.canExecute())
52 // If the path is absolute (and it usually is), call FindProgramByName to
53 // allow it to try platform-specific logic, such as appending a .exe suffix
54 // on Windows. Don't do this if we somehow have a relative path, because
55 // we don't want to go searching the PATH and accidentally find an unrelated
56 // version of the program.
57 if (Result.isAbsolute()) {
58 Result = sys::Program::FindProgramByName(Result.str());