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