Qt Creator plugin CMakeLists.txt is corrupted upon project creation

[remisa]

I have created a library -> Qt creator plugin. After filling information in wizard my project was ready and this the log I found:

[cmake] Running /home/me/Qt/Tools/CMake/bin/cmake -S /data/Code/Qt/Notepad--/plugins/CppSyntaxHighlighterPlugin -B /data/Code/Qt/Notepad--/plugins/CppSyntaxHighlighterPlugin/build/Desktop-Debug -DCMAKE_C_COMPILER:FILEPATH=/usr/bin/clang -DCMAKE_PREFIX_PATH:PATH=/usr -DCMAKE_GENERATOR:STRING=Ninja -DQT_QMAKE_EXECUTABLE:FILEPATH=/usr/bin/qmake6 -DCMAKE_BUILD_TYPE:STRING=Debug -DCMAKE_CXX_COMPILER:FILEPATH=/usr/bin/x86_64-pc-linux-gnu-g++ -DCMAKE_CXX_FLAGS_INIT:STRING=-DQT_QML_DEBUG -DCMAKE_PROJECT_INCLUDE_BEFORE:FILEPATH=/data/Code/Qt/Notepad--/plugins/CppSyntaxHighlighterPlugin/build/Desktop-Debug/.qtc/package-manager/auto-setup.cmake in /data/Code/Qt/Notepad--/plugins/CppSyntaxHighlighterPlugin/build/Desktop-Debug.
[cmake] -- The C compiler identification is Clang 18.1.8
[cmake] -- The CXX compiler identification is GNU 14.2.1
[cmake] -- Detecting C compiler ABI info
[cmake] -- Detecting C compiler ABI info - done
[cmake] -- Check for working C compiler: /usr/bin/clang - skipped
[cmake] -- Detecting C compile features
[cmake] -- Detecting C compile features - done
[cmake] -- Detecting CXX compiler ABI info
[cmake] -- Detecting CXX compiler ABI info - done
[cmake] -- Check for working CXX compiler: /usr/bin/x86_64-pc-linux-gnu-g++ - skipped
[cmake] -- Detecting CXX compile features
[cmake] -- Detecting CXX compile features - done
[cmake] CMake Error at CMakeLists.txt:15 (find_package):
[cmake]   By not providing "FindQtCreator.cmake" in CMAKE_MODULE_PATH this project
[cmake]   has asked CMake to find a package configuration file provided by
[cmake]   "QtCreator", but CMake did not find one.
[cmake] 
[cmake]   Could not find a package configuration file provided by "QtCreator" with
[cmake]   any of the following names:
[cmake] 
[cmake]     QtCreatorConfig.cmake
[cmake]     qtcreator-config.cmake
[cmake] 
[cmake]   Add the installation prefix of "QtCreator" to CMAKE_PREFIX_PATH or set
[cmake]   "QtCreator_DIR" to a directory containing one of the above files.  If
[cmake]   "QtCreator" provides a separate development package or SDK, be sure it has
[cmake]   been installed.
[cmake] 
[cmake] 
[cmake] -- Configuring incomplete, errors occurred!
[cmake] 
[cmake] The command "/home/me/Qt/Tools/CMake/bin/cmake -S /data/Code/Qt/Notepad--/plugins/CppSyntaxHighlighterPlugin -B /data/Code/Qt/Notepad--/plugins/CppSyntaxHighlighterPlugin/build/Desktop-Debug -DCMAKE_C_COMPILER:FILEPATH=/usr/bin/clang -DCMAKE_PREFIX_PATH:PATH=/usr -DCMAKE_GENERATOR:STRING=Ninja -DQT_QMAKE_EXECUTABLE:FILEPATH=/usr/bin/qmake6 -DCMAKE_BUILD_TYPE:STRING=Debug -DCMAKE_CXX_COMPILER:FILEPATH=/usr/bin/x86_64-pc-linux-gnu-g++ -DCMAKE_CXX_FLAGS_INIT:STRING=-DQT_QML_DEBUG -DCMAKE_PROJECT_INCLUDE_BEFORE:FILEPATH=/data/Code/Qt/Notepad--/plugins/CppSyntaxHighlighterPlugin/build/Desktop-Debug/.qtc/package-manager/auto-setup.cmake" terminated with exit code 1.
[cmake] 
[cmake] Elapsed time: 00:01.

This is CMakeLists.txt:

cmake_minimum_required(VERSION 3.16)

# Remove when sharing with others.
list(APPEND CMAKE_PREFIX_PATH "/data/Code/Qt/Notepad--/plugins/build")

project(CppSyntaxHighlighterPlugin)

set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

find_package(QtCreator REQUIRED COMPONENTS Core)
find_package(Qt6 COMPONENTS Widgets REQUIRED)

# Add a CMake option that enables building your plugin with tests.
# You don't want your released plugin binaries to contain tests,
# so make that default to 'NO'.
# Enable tests by passing -DWITH_TESTS=ON to CMake.
option(WITH_TESTS "Builds with tests" NO)

if(WITH_TESTS)
  # Look for QtTest
  find_package(Qt6 REQUIRED COMPONENTS Test)

  # Tell CMake functions like add_qtc_plugin about the QtTest component.
  set(IMPLICIT_DEPENDS Qt::Test)

  # Enable ctest for auto tests.
  enable_testing()
endif()

add_qtc_plugin(CppSyntaxHighlighterPlugin
  PLUGIN_DEPENDS
    QtCreator::Core
  DEPENDS
    Qt::Widgets
    QtCreator::ExtensionSystem
    QtCreator::Utils
  SOURCES
    .github/workflows/build_cmake.yml
    .github/workflows/README.md
    README.md
    cppsyntaxhighlighterplugin.cpp
    cppsyntaxhighlighterpluginconstants.h
    cppsyntaxhighlighterplugintr.h
)

since I have Arch Linux I have installed qtcreator package. Any Idea?

[cristian-adam]

You need to have the Qt Creator -dev package that has the file QtCreatorConfig.cmake.

I am unsure if Arch Linux actually packages this.

If you install Qt Creator from https://download.qt.io/official_releases/qtcreator/ and select the "Development" package, you will be able to create Qt Creator plugins.

[cristian-adam]

Arch does package qtcreator-devel. See https://archlinux.org/packages/extra/x86_64/qtcreator-devel/