How to specify compilation database for clang-tidy

Question

I am struggling with running clang-tidy for my project. I am trying to run clang-tidy for my project for send data to Codacy. I am doing it like this:

clang-tidy $PWD -header-filter=.*,-checks=-*,clang-analyzer-*,-clang-analyzer-cplusplus* | ./codacy-clang-tidy-1.1.1 | \
        curl -XPOST -L -H "project-token: $CODACY_PROJECT_TOKEN" \
            -H "Content-type: application/json" -d @- \
            "https://api.codacy.com/2.0/commit/$TRAVIS_COMMIT/issuesRemoteResults"

        curl -XPOST -L -H "project-token: $CODACY_PROJECT_TOKEN" \
            -H "Content-type: application/json" \
            "https://api.codacy.com/2.0/commit/$TRAVIS_COMMIT/resultsFinal"

But it is complaining that compilation data cannot be found:

Error while trying to load a compilation database:
Could not auto-detect compilation database for file "/home/travis/build/mVento3/Duckvil/build"
No compilation database found in /home/travis/build/mVento3/Duckvil or any parent directory
fixed-compilation-database: Error while opening fixed database: No such file or directory
json-compilation-database: Error while opening JSON database: No such file or directory

I am sure that compile_commands.json is in build directory where I am trying to run clang-tidy.
Main CMakeLists.txt:

cmake_minimum_required(VERSION 3.17)

project(Duckvil)

find_program(CLANG_TIDY_COMMAND NAMES clang-tidy)

if(NOT CLANG_TIDY_COMMAND)
    message(WARNING "Could not find clang-tidy!")
    set(CMAKE_CXX_CLANG_TIDY "" CACHE STRING "" FORCE)
else()
    message(WARNING "Found clang-tidy")
    set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
    set(CMAKE_CXX_CLANG_TIDY
        clang-tidy;
        -header-filter=.*;
        -checks=*;
        --dump-config > .clang-tidy;
    )
endif()

if(WIN32)
    add_definitions(-DDUCKVIL_PLATFORM_WINDOWS)
else()
    if(UNIX)
        add_definitions(-DDUCKVIL_PLATFORM_LINUX)

        SET(GCC_COVERAGE_COMPILE_FLAGS "-g -O0 -coverage -fprofile-arcs -ftest-coverage")
        SET(GCC_COVERAGE_LINK_FLAGS "-coverage -lgcov")

        SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${GCC_COVERAGE_COMPILE_FLAGS}")
        SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${GCC_COVERAGE_LINK_FLAGS}")
    endif()
endif()

add_definitions(-DDUCKVIL_OUTPUT="${CMAKE_SOURCE_DIR}/bin")

add_subdirectory(source)
list(APPEND CMAKE_CTEST_ARGUMENTS "--output-on-failure")
ENABLE_TESTING()
add_subdirectory(test)

Do i need to specify some additional option, or I misunderstood something?

EDIT

At second thought, maybe I should not doing it in separate "go", but while generating CMake project?

EDIT2

I came up with this:

./codacy-clang-tidy-1.1.1 < compile_commands.json | \
        curl -XPOST -L -H "project-token: ${CODACY_PROJECT_TOKEN}" \
            -H "Content-type: application/json" -d @- \
            "https://api.codacy.com/2.0/commit/${TRAVIS_COMMIT}/issuesRemoteResults"

        curl -XPOST -L -H "project-token: ${CODACY_PROJECT_TOKEN}" \
            -H "Content-type: application/json" \
            "https://api.codacy.com/2.0/commit/${TRAVIS_COMMIT}/resultsFinal"

Now it is not complaining about database, seems it is sending the data to codacy, but I cannot see anything on codacy... I read through codacy-clang-tidy and it seems it is getting the data from stdin.

Answer 1

Specify the location explicitly using -p like -p ${CMAKE_BUILD_DIR}:

-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:
        https://clang.llvm.org/docs/HowToSetupToolingForLLVM.html for an
        example of setting up Clang Tooling on a source tree.