//===- llvm/Support/Unix/Unix.h - Common Unix Include File -------*- C++ -*-===//

//

//                     The LLVM Compiler Infrastructure

//

// This file is distributed under the University of Illinois Open Source

// License. See LICENSE.TXT for details.

//

//===----------------------------------------------------------------------===//

//

// This file defines things specific to Unix implementations.

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_SUPPORT_UNIX_UNIX_H

#define LLVM_LIB_SUPPORT_UNIX_UNIX_H

//===----------------------------------------------------------------------===//

//=== WARNING: Implementation here must contain only generic UNIX code that

//===          is guaranteed to work on all UNIX variants.

//===----------------------------------------------------------------------===//

#include "llvm/Config/config.h"     // Get autoconf configuration settings

#include "llvm/Support/Errno.h"

#include <algorithm>

#include <assert.h>

#include <cerrno>

#include <cstdio>

#include <cstdlib>

#include <cstring>

#include <string>

#include <sys/types.h>

#include <sys/wait.h>

#ifdef HAVE_UNISTD_H

#include <unistd.h>

#endif

#ifdef HAVE_SYS_PARAM_H

#include <sys/param.h>

#endif

#ifdef HAVE_SYS_TIME_H

# include <sys/time.h>

#endif

#include <time.h>

#ifdef HAVE_DLFCN_H

# include <dlfcn.h>

#endif

/// This function builds an error message into \p ErrMsg using the \p prefix

/// string and the Unix error number given by \p errnum. If errnum is -1, the

/// default then the value of errno is used.

/// @brief Make an error message

///

/// If the error number can be converted to a string, it will be

/// separated from prefix by ": ".

static inline bool MakeErrMsg(

  std::string* ErrMsg, const std::string& prefix, int errnum = -1) {

  if (!ErrMsg)

    return true;

  if (errnum == -1)

    errnum = errno;

  *ErrMsg = prefix + ": ";  // + llvm_ks::sys::StrError(errnum);

  return true;

}

#endif