I'm having issues building a QT program

[cogos18]

I am having issues compiling a QT program in C++.

So I want to have a system in place where everytime an executable file is built, the DLL files that are required as dependencies get placed into the build directory.

But for some reason every time I try to compile something, an syntax error occurs because CMake tries to execute a CMD.exe instance inside another one which executes the commands.

Here is the output I got:

20:48:05: Running steps for project LauncherUIExample...
20:48:05: Starting: "C:\Qt\Tools\CMake_64\bin\cmake.exe" --build C:/code/mitch/projects/LauncherUIExample/build/Desktop_Qt_6_8_0_llvm_mingw_64_bit-Release --target all
[0/2 0.0/sec] Re-checking globbed directories...
-- GLOB mismatch!
-- GLOB mismatch!
[1/2 11.0/sec] Re-running CMake...
-- Could NOT find WrapVulkanHeaders (missing: Vulkan_INCLUDE_DIR) 
-- Configuring done (0.7s)
-- Generating done (0.0s)
-- Build files have been written to: C:/code/mitch/projects/LauncherUIExample/build/Desktop_Qt_6_8_0_llvm_mingw_64_bit-Release
[0/4 0.0/sec] Re-checking globbed directories...
[1/4 8.8/sec] Linking CXX executable LauncherUIExample.exe
FAILED: LauncherUIExample.exe 
C:\Windows\system32\cmd.exe /C "C:\Windows\system32\cmd.exe /C "cd /D C:\code\mitch\projects\LauncherUIExample\build\Desktop_Qt_6_8_0_llvm_mingw_64_bit-Release && CD C:/code/mitch/projects/LauncherUIExample && COPY changes.txt C:/code/mitch/projects/LauncherUIExample/build/Desktop_Qt_6_8_0_llvm_mingw_64_bit-Release && cd C:\code\mitch\projects\LauncherUIExample\build\Desktop_Qt_6_8_0_llvm_mingw_64_bit-Release" && C:\Qt\Tools\llvm-mingw1706_64\bin\clang++.exe -O3 -DNDEBUG -mwindows CMakeFiles/LauncherUIExample.dir/LauncherUIExample_autogen/mocs_compilation.cpp.obj CMakeFiles/LauncherUIExample.dir/main.cpp.obj CMakeFiles/LauncherUIExample.dir/launchermainwindow.cpp.obj -o LauncherUIExample.exe -Wl,--out-implib,libLauncherUIExample.dll.a -Wl,--major-image-version,0,--minor-image-version,0  C:/Qt/6.8.0/llvm-mingw_64/lib/libQt6Widgets.a  C:/Qt/6.8.0/llvm-mingw_64/lib/libQt6Gui.a  C:/Qt/6.8.0/llvm-mingw_64/lib/libQt6Core.a  -lmpr  -luserenv  -lmingw32  C:/Qt/6.8.0/llvm-mingw_64/lib/libQt6EntryPoint.a  -pthread  -lshell32  -ld3d11  -ldxgi  -ldxguid  -ld3d12  -lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32 && C:\Windows\system32\cmd.exe /C "cd /D C:\code\mitch\projects\LauncherUIExample\build\Desktop_Qt_6_8_0_llvm_mingw_64_bit-Release && CD C:/code/mitch/projects/LauncherUIExample/build/Desktop_Qt_6_8_0_llvm_mingw_64_bit-Release && C:/Qt/6.8.0/llvm-mingw_64/bin/windeployqt.exe LauncherUIExample.exe --verbose 1 --dir .""
The syntax of the command is incorrect.
ninja: build stopped: subcommand failed.
20:48:06: The process "C:\Qt\Tools\CMake_64\bin\cmake.exe" exited with code 1.
Error while building/deploying project LauncherUIExample (kit: Desktop Qt 6.8.0 llvm-mingw 64-bit)
When executing step "Build"

Just in-case you wish to see the CMakeLists file contents, here it is:

cmake_minimum_required(VERSION 3.16)

project(LauncherUIExample VERSION 0.1 LANGUAGES CXX)

set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets LinguistTools)
find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets LinguistTools)

set(TS_FILES LauncherUIExample_en_AU.ts)

set(PROJECT_SOURCES
        main.cpp
        launchermainwindow.cpp
        launchermainwindow.h
        launchermainwindow.ui
        ${TS_FILES}
)

if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
    qt_add_executable(LauncherUIExample
        MANUAL_FINALIZATION
        ${PROJECT_SOURCES}
        changes.txt
    )
# Define target properties for Android with Qt 6 as:
#    set_property(TARGET LauncherUIExample APPEND PROPERTY QT_ANDROID_PACKAGE_SOURCE_DIR
#                 ${CMAKE_CURRENT_SOURCE_DIR}/android)
# For more information, see https://doc.qt.io/qt-6/qt-add-executable.html#target-creation

    qt_create_translation(QM_FILES ${CMAKE_SOURCE_DIR} ${TS_FILES})
else()
    if(ANDROID)
        add_library(LauncherUIExample SHARED
            ${PROJECT_SOURCES}
        )
# Define properties for Android with Qt 5 after find_package() calls as:
#    set(ANDROID_PACKAGE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/android")
    else()
        add_executable(LauncherUIExample
            ${PROJECT_SOURCES}
        )
    endif()

    qt5_create_translation(QM_FILES ${CMAKE_SOURCE_DIR} ${TS_FILES})
endif()

target_link_libraries(LauncherUIExample PRIVATE Qt${QT_VERSION_MAJOR}::Widgets)

# Qt for iOS sets MACOSX_BUNDLE_GUI_IDENTIFIER automatically since Qt 6.1.
# If you are developing for iOS or macOS you should consider setting an
# explicit, fixed bundle identifier manually though.
if(${QT_VERSION} VERSION_LESS 6.1.0)
  set(BUNDLE_ID_OPTION MACOSX_BUNDLE_GUI_IDENTIFIER com.example.LauncherUIExample)
endif()
set_target_properties(LauncherUIExample PROPERTIES
    ${BUNDLE_ID_OPTION}
    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
    MACOSX_BUNDLE TRUE
    WIN32_EXECUTABLE TRUE
)

include(GNUInstallDirs)
install(TARGETS LauncherUIExample
    BUNDLE DESTINATION .
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
)

if(QT_VERSION_MAJOR EQUAL 6)
    qt_finalize_executable(LauncherUIExample)
endif()


add_custom_command(
    TARGET LauncherUIExample
    PRE_LINK
    COMMAND
        CD ${PROJECT_SOURCE_DIR} &&
        COPY changes.txt ${PROJECT_BINARY_DIR}
    )

add_custom_command(
    TARGET LauncherUIExample
    POST_BUILD
    COMMAND
        CD ${PROJECT_BINARY_DIR} &&
        ${WINDEPLOYQT_EXECUTABLE} LauncherUIExample.exe
         --verbose 1 --dir .
    )

Please be aware that I am still getting my hand around C++.
Many thanks.