forked from OSchip/llvm-project
63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
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//===- examples/Tooling/ClangCheck.cpp - Clang check tool -----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements a clang-check tool that runs the
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// clang::SyntaxOnlyAction over a number of translation units.
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//
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// Usage:
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// clang-check <cmake-output-dir> <file1> <file2> ...
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//
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// Where <cmake-output-dir> is a CMake build directory in which a file named
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// compile_commands.json exists (enable -DCMAKE_EXPORT_COMPILE_COMMANDS in
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// CMake to get this output).
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//
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// <file1> ... specify the paths of files in the CMake source tree. This path
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// is looked up in the compile command database. If the path of a file is
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// absolute, it needs to point into CMake's source tree. If the path is
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// relative, the current working directory needs to be in the CMake source
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// tree and the file must be in a subdirectory of the current working
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// directory. "./" prefixes in the relative files will be automatically
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// removed, but the rest of a relative path must be a suffix of a path in
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// the compile command line database.
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//
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// For example, to use clang-check on all files in a subtree of the source
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// tree, use:
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//
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// /path/in/subtree $ find . -name '*.cpp'| xargs clang-check /path/to/source
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/CommandLine.h"
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#include "clang/Frontend/FrontendActions.h"
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#include "clang/Tooling/CompilationDatabase.h"
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#include "clang/Tooling/Tooling.h"
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using namespace clang::tooling;
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using namespace llvm;
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cl::opt<std::string> BuildPath(
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cl::Positional,
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cl::desc("<build-path>"));
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cl::list<std::string> SourcePaths(
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cl::Positional,
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cl::desc("<source0> [... <sourceN>]"),
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cl::OneOrMore);
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int main(int argc, char **argv) {
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cl::ParseCommandLineOptions(argc, argv);
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std::string ErrorMessage;
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llvm::OwningPtr<CompilationDatabase> Compilations(
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CompilationDatabase::loadFromDirectory(BuildPath, ErrorMessage));
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if (!Compilations)
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llvm::report_fatal_error(ErrorMessage);
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ClangTool Tool(*Compilations, SourcePaths);
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return Tool.run(newFrontendActionFactory<clang::SyntaxOnlyAction>());
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}
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