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1a4d82fc | 1 | //===- llvm/Support/Unix/Host.inc -------------------------------*- C++ -*-===// |
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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 | ||
223e47cc | 19 | #include "Unix.h" |
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20 | #include "llvm/ADT/StringRef.h" |
21 | #include "llvm/Config/config.h" | |
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22 | #include <cctype> |
23 | #include <string> | |
85aaf69f | 24 | #include <sys/utsname.h> |
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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 | StringRef TargetTripleString(LLVM_DEFAULT_TARGET_TRIPLE); | |
39 | std::pair<StringRef, StringRef> ArchSplit = TargetTripleString.split('-'); | |
40 | ||
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41 | // Normalize the arch, since the target triple may not actually match the |
42 | // target. | |
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43 | std::string Arch = ArchSplit.first; |
44 | ||
45 | std::string Triple(Arch); | |
46 | Triple += '-'; | |
47 | Triple += ArchSplit.second; | |
48 | ||
49 | // Force i<N>86 to i386. | |
50 | if (Triple[0] == 'i' && isdigit(Triple[1]) && | |
51 | Triple[2] == '8' && Triple[3] == '6') | |
52 | Triple[1] = '3'; | |
53 | ||
54 | // On darwin, we want to update the version to match that of the | |
55 | // target. | |
56 | std::string::size_type DarwinDashIdx = Triple.find("-darwin"); | |
57 | if (DarwinDashIdx != std::string::npos) { | |
58 | Triple.resize(DarwinDashIdx + strlen("-darwin")); | |
59 | Triple += getOSVersion(); | |
60 | } | |
61 | ||
1a4d82fc | 62 | return Triple::normalize(Triple); |
223e47cc | 63 | } |