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23fdd5a37f
Previously, there were two different scripts for generating VCS headers: one used by LLVM and one used by Clang and lldb. They were both similar, but different. They were both broken in their own ways, for example the one used by Clang didn't properly handle monorepo resulting in an incorrect version information reported by Clang. This change unifies two the scripts by introducing a new script that's used from both LLVM, Clang and lldb, ensures that the new script supports both monorepo and standalone SVN and Git setups, and removes the old scripts. Differential Revision: https://reviews.llvm.org/D57063 llvm-svn: 353268
151 lines
3.8 KiB
C++
151 lines
3.8 KiB
C++
//===- Version.cpp - Clang Version Number -----------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines several version-related utility functions for Clang.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Basic/Version.h"
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#include "clang/Basic/LLVM.h"
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#include "clang/Config/config.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstdlib>
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#include <cstring>
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#ifdef HAVE_VCS_VERSION_INC
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#include "VCSVersion.inc"
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#endif
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namespace clang {
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std::string getClangRepositoryPath() {
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#if defined(CLANG_REPOSITORY_STRING)
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return CLANG_REPOSITORY_STRING;
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#else
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#ifdef CLANG_REPOSITORY
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StringRef URL(CLANG_REPOSITORY);
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#else
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StringRef URL("");
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#endif
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// If the CLANG_REPOSITORY is empty, try to use the SVN keyword. This helps us
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// pick up a tag in an SVN export, for example.
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StringRef SVNRepository("$URL$");
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if (URL.empty()) {
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URL = SVNRepository.slice(SVNRepository.find(':'),
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SVNRepository.find("/lib/Basic"));
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}
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// Strip off version from a build from an integration branch.
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URL = URL.slice(0, URL.find("/src/tools/clang"));
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// Trim path prefix off, assuming path came from standard cfe path.
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size_t Start = URL.find("cfe/");
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if (Start != StringRef::npos)
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URL = URL.substr(Start + 4);
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return URL;
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#endif
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}
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std::string getLLVMRepositoryPath() {
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#ifdef LLVM_REPOSITORY
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StringRef URL(LLVM_REPOSITORY);
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#else
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StringRef URL("");
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#endif
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// Trim path prefix off, assuming path came from standard llvm path.
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// Leave "llvm/" prefix to distinguish the following llvm revision from the
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// clang revision.
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size_t Start = URL.find("llvm/");
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if (Start != StringRef::npos)
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URL = URL.substr(Start);
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return URL;
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}
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std::string getClangRevision() {
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#ifdef CLANG_REVISION
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return CLANG_REVISION;
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#else
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return "";
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#endif
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}
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std::string getLLVMRevision() {
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#ifdef LLVM_REVISION
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return LLVM_REVISION;
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#else
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return "";
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#endif
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}
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std::string getClangFullRepositoryVersion() {
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std::string buf;
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llvm::raw_string_ostream OS(buf);
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std::string Path = getClangRepositoryPath();
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std::string Revision = getClangRevision();
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if (!Path.empty() || !Revision.empty()) {
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OS << '(';
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if (!Path.empty())
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OS << Path;
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if (!Revision.empty()) {
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if (!Path.empty())
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OS << ' ';
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OS << Revision;
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}
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OS << ')';
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}
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// Support LLVM in a separate repository.
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std::string LLVMRev = getLLVMRevision();
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if (!LLVMRev.empty() && LLVMRev != Revision) {
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OS << " (";
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std::string LLVMRepo = getLLVMRepositoryPath();
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if (!LLVMRepo.empty())
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OS << LLVMRepo << ' ';
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OS << LLVMRev << ')';
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}
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return OS.str();
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}
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std::string getClangFullVersion() {
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return getClangToolFullVersion("clang");
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}
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std::string getClangToolFullVersion(StringRef ToolName) {
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std::string buf;
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llvm::raw_string_ostream OS(buf);
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#ifdef CLANG_VENDOR
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OS << CLANG_VENDOR;
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#endif
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OS << ToolName << " version " CLANG_VERSION_STRING " "
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<< getClangFullRepositoryVersion();
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// If vendor supplied, include the base LLVM version as well.
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#ifdef CLANG_VENDOR
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OS << " (based on " << BACKEND_PACKAGE_STRING << ")";
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#endif
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return OS.str();
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}
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std::string getClangFullCPPVersion() {
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// The version string we report in __VERSION__ is just a compacted version of
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// the one we report on the command line.
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std::string buf;
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llvm::raw_string_ostream OS(buf);
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#ifdef CLANG_VENDOR
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OS << CLANG_VENDOR;
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#endif
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OS << "Clang " CLANG_VERSION_STRING " " << getClangFullRepositoryVersion();
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return OS.str();
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}
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} // end namespace clang
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