LLVM  3.7.0
Unix/Host.inc
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1 //===- llvm/Support/Unix/Host.inc -------------------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the UNIX Host support.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 //===----------------------------------------------------------------------===//
15 //=== WARNING: Implementation here must contain only generic UNIX code that
16 //=== is guaranteed to work on *all* UNIX variants.
17 //===----------------------------------------------------------------------===//
18 
19 #include "Unix.h"
20 #include "llvm/ADT/StringRef.h"
21 #include "llvm/Config/config.h"
22 #include <cctype>
23 #include <string>
24 #include <sys/utsname.h>
25 
26 using namespace llvm;
27 
28 static std::string getOSVersion() {
29  struct utsname info;
30 
31  if (uname(&info))
32  return "";
33 
34  return info.release;
35 }
36 
37 std::string sys::getDefaultTargetTriple() {
38  std::string TargetTripleString(LLVM_DEFAULT_TARGET_TRIPLE);
39 
40  // On darwin, we want to update the version to match that of the
41  // target.
42  std::string::size_type DarwinDashIdx = TargetTripleString.find("-darwin");
43  if (DarwinDashIdx != std::string::npos) {
44  TargetTripleString.resize(DarwinDashIdx + strlen("-darwin"));
45  TargetTripleString += getOSVersion();
46  }
47 
48  return Triple::normalize(TargetTripleString);
49 }
std::string getDefaultTargetTriple()
getDefaultTargetTriple() - Return the default target triple the compiler has been configured to produ...
lazy value info
std::string normalize() const
Return the normalized form of this triple's string.
Definition: Triple.h:235