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 } 50
