cmake build

sweezyjog

Hi guys,

I'm trying to develop crossplatform c++ application with qt and cmake. My goal is to make it that way that users don't need to have preinstalled qt to build the project. I don't want to deploy only executable.

For linux I'm good, I use docker, but I'm really struggling with windows. I'm using fetchcontent but I have always some kind of error.
I will appreciate any kind of help thanks :)

this is my CMakeLists.txt

cmake_minimum_required(VERSION 3.16)
project(QtAppExample LANGUAGES CXX)

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

option(BUILD_SHARED_LIBS "Build shared libraries" ON)

include(FetchContent)
FetchContent_Declare(
    qtbase
    GIT_REPOSITORY https://github.com/qt/qtbase.git
    GIT_TAG v6.8.0
)
FetchContent_MakeAvailable(qtbase)

set(CMAKE_PREFIX_PATH ${qtbase_SOURCE_DIR}/lib/cmake)

find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)

add_executable(QtApp src/main.cpp)

target_link_libraries(QtApp PRIVATE Qt6::Core Qt6::Gui Qt6::Widgets)

target_compile_definitions(QtApp PRIVATE "PROJECT_SOURCE_DIR=\"${CMAKE_SOURCE_DIR}\"")

if(WIN32)
    add_custom_command(
        TARGET QtApp
        COMMENT "Copy necessary Qt DLLs"
        PRE_BUILD COMMAND ${CMAKE_COMMAND} -E copy_directory
            ${qtbase_BINARY_DIR}/bin
            $<TARGET_FILE_DIR:QtApp>
    )
endif()

install(TARGETS QtApp DESTINATION bin)

this is error I keep seeing:

WARNING: Basic cpp/winrt support missing. Some features might not be available.

ERROR: detected a std::atomic implementation that fails for function pointers.  Please apply the patch corresponding to your Standard Library vendor, found in qtbase/config.tests/atomicfptr

CMake Error at build/_deps/qtbase-src/cmake/QtBuildInformation.cmake:220 (message):
  Check the configuration messages for an error that has occurred.
Call Stack (most recent call first):
  build/_deps/qtbase-src/cmake/QtBuildInformation.cmake:39 (qt_configure_print_summary)
  build/_deps/qtbase-src/src/plugins/sqldrivers/CMakeLists.txt:80 (qt_print_feature_summary)


-- Configuring incomplete, errors occurred!