1 //===- Version.cpp - Clang Version Number -----------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file defines several version-related utility functions for Clang.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "clang/Basic/Version.h"
14 #include "clang/Basic/LLVM.h"
15 #include "clang/Config/config.h"
16 #include "llvm/Support/raw_ostream.h"
17 #include <cstdlib>
18 #include <cstring>
19 
20 #include "VCSVersion.inc"
21 
22 namespace clang {
23 
24 std::string getClangRepositoryPath() {
25 #if defined(CLANG_REPOSITORY_STRING)
26   return CLANG_REPOSITORY_STRING;
27 #else
28 #ifdef CLANG_REPOSITORY
29   return CLANG_REPOSITORY;
30 #else
31   return "";
32 #endif
33 #endif
34 }
35 
36 std::string getLLVMRepositoryPath() {
37 #ifdef LLVM_REPOSITORY
38   return LLVM_REPOSITORY;
39 #else
40   return "";
41 #endif
42 }
43 
44 std::string getClangRevision() {
45 #ifdef CLANG_REVISION
46   return CLANG_REVISION;
47 #else
48   return "";
49 #endif
50 }
51 
52 std::string getLLVMRevision() {
53 #ifdef LLVM_REVISION
54   return LLVM_REVISION;
55 #else
56   return "";
57 #endif
58 }
59 
60 std::string getClangVendor() {
61 #ifdef CLANG_VENDOR
62   return CLANG_VENDOR;
63 #else
64   return "";
65 #endif
66 }
67 
68 std::string getClangFullRepositoryVersion() {
69   std::string buf;
70   llvm::raw_string_ostream OS(buf);
71   std::string Path = getClangRepositoryPath();
72   std::string Revision = getClangRevision();
73   if (!Path.empty() || !Revision.empty()) {
74     OS << '(';
75     if (!Path.empty())
76       OS << Path;
77     if (!Revision.empty()) {
78       if (!Path.empty())
79         OS << ' ';
80       OS << Revision;
81     }
82     OS << ')';
83   }
84   // Support LLVM in a separate repository.
85   std::string LLVMRev = getLLVMRevision();
86   if (!LLVMRev.empty() && LLVMRev != Revision) {
87     OS << " (";
88     std::string LLVMRepo = getLLVMRepositoryPath();
89     if (!LLVMRepo.empty())
90       OS << LLVMRepo << ' ';
91     OS << LLVMRev << ')';
92   }
93   return buf;
94 }
95 
96 std::string getClangFullVersion() {
97   return getClangToolFullVersion("clang");
98 }
99 
100 std::string getClangToolFullVersion(StringRef ToolName) {
101   std::string buf;
102   llvm::raw_string_ostream OS(buf);
103   OS << getClangVendor() << ToolName << " version " CLANG_VERSION_STRING;
104 
105   std::string repo = getClangFullRepositoryVersion();
106   if (!repo.empty()) {
107     OS << " " << repo;
108   }
109 
110   return buf;
111 }
112 
113 std::string getClangFullCPPVersion() {
114   // The version string we report in __VERSION__ is just a compacted version of
115   // the one we report on the command line.
116   std::string buf;
117   llvm::raw_string_ostream OS(buf);
118   OS << getClangVendor() << "Clang " CLANG_VERSION_STRING;
119 
120   std::string repo = getClangFullRepositoryVersion();
121   if (!repo.empty()) {
122     OS << " " << repo;
123   }
124 
125   return buf;
126 }
127 
128 } // end namespace clang
129