new to clang and clang-tidy here.
I have a project with this type of structure:
project/
- build/
- cmake/
- component1/
- src/
- someFile.cpp
- someFile2.cpp
- someFile.hpp
- someFile2.hpp
- component2/
- etc...
-
When I use clang-tidy to go through all the files in project/component1/ with this command: clang-tidy project/component1/src/* -checks=-*,clang-analyzer-*,-clang-analyzer-alpha*
It ends up throwing an error like this:
$HOME/project/component1/src/someFile.cpp:18:10: error: 'project/component1/someFile.hpp' file not found [clang-diagnostic-error]
\#include "component1/someFile.hpp"
This answer will only help you if you use CMake to manage your project.
CMake has an option to create a .json file that contains all the compiler calls with command line options. This file can be given to clang-tidy with the option:
-p <build-path> is used to read a compile command database.
For example, it can be a CMake build directory in which a file named
compile_commands.json exists (use -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
CMake option to get this output). When no build path is specified,
a search for compile_commands.json will be attempted through all
parent paths of the first input file . See:
http://clang.llvm.org/docs/HowToSetupToolingForLLVM.html for an
example of setting up Clang Tooling on a source tree.
As the documentation states, you have to set the CMAKE_EXPORT_COMPILE_COMMANDS variable to generate the .json file with CMake and then pass the CMake output directory to clang-tidy.
Clang-tidy will then get the include paths from the commands in the .json file.