Include what you use

[Pascal06]

Hello everybody,
I'm fresh new to QT.
I want to compile my first project (an example that I found on the internet) with QT, but I've got an error:

CMake Error at CMakeLists.txt:20 (message):
  Could not find the program include-what-you-use

How making this "include what you use" work in QT ?
Thanks a lot in advance.

[Christian Ehrlicher]

@Pascal06 said in Include what you use:

How making this "include what you use" work in QT ?

Why do you want to use it? How did you compile include-what-you-use and is it in your PATH so cmake can find it?

[Pascal06]

@Christian-Ehrlicher
Hello, thanks a lot for your reply.
I don't know why I have to use this thing, it was in the project:

project(xclm)
cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)

# add single headers to project structure
FILE(GLOB_RECURSE HeaderFiles "*.h")
add_custom_target(headers SOURCES ${HeaderFiles})

include_directories(.)

find_package(Boost 1.57.0 COMPONENTS system program_options filesystem REQUIRED)

if(Boost_FOUND)
    find_program(iwyu_path NAMES include-what-you-use iwyu)
    if(NOT iwyu_path)
      message(FATAL_ERROR "Could not find the program include-what-you-use")
    endif()

    set(iwyu_path_and_options ${iwyu_path} -Xiwyu --check_also)

    aux_source_directory(. SRC_LIST)
    aux_source_directory(hashes SRC_LIST)
    aux_source_directory(runner SRC_LIST)
    aux_source_directory(version SRC_LIST)
    add_executable(${PROJECT_NAME} ${SRC_LIST})
    target_link_libraries(${PROJECT_NAME} ${Boost_LIBRARIES})
    set_property(TARGET ${PROJECT_NAME} PROPERTY CXX_INCLUDE_WHAT_YOU_USE ${iwyu_path})
else()
    message(FATAL_ERROR "boost library not found.")
endif()

Be indulgent, I'm very newbie to QT...
Thanks a lot for your comprehsion

[Christian Ehrlicher]

If you don't need include-what-you-use then remove it from your CMakeLists.txt. Nothing Qt specific.

[Pascal06]

@Christian-Ehrlicher
Hello,
indeed, I commented lines related to iwyu in CMakeList and now it compile.
Sorry my question was stupid.
Thanks a lot for your help.

Pascal