Empty .ts files after lupdate (CMake and macOS 6.3.2)

[Sikarjan 0]

Hi there!

I need help again here because I was not able to find a solution on the web. I do not manage to get a translation file. Here is minimal example:

Created a new project "Qt Widget Application"
Choose CMake
Selected Qt 6.3.2 for macOS as kit
Selected a language (English)
Created the project.

Add a label to the design file with "Test Label" as text.
Add QObject::tr("Test String"); to mainwindow.cpp

When I run the project it compiles.
Running lupdate from Qt Creator:

lupdate warning: no TS files specified. Only diagnostics will be produced.

CMakeLists.txt was generated by Qt Creator and includes:

set(TS_FILES Test_en_GB.ts)

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

Is there a bug in the CMake create process? Do I need to do something extra? In one tutorial I saw that they added some lines to copy qm files. Is that missing?

[mchinand]

https://doc.qt.io/qt-6/qtlinguist-cmake-qt-add-translations.html#qt6-add-translations

[Sikarjan 0]

Thanks for the link but it does not really help me. It does not say but I am assuming they are talking about the CMakeListe.txt, correct?
Here is my full CmakeList after editing:

cmake_minimum_required(VERSION 3.5)

project(ncNotes VERSION 0.1 LANGUAGES CXX)

set(CMAKE_INCLUDE_CURRENT_DIR ON)

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 ncNotes_en_EN.ts
        ncNotes_de_DE.ts)

set(PROJECT_SOURCES
        main.cpp
        mainwindow.cpp
        mainwindow.h
        notemodel.cpp
        notemodel.h
        mainwindow.ui
        infoDialog.ui
        ${TS_FILES}
)

if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
    qt_add_executable(ncNotes
        MANUAL_FINALIZATION
        ${PROJECT_SOURCES}
    )
    qt6_add_translations(ncNotes TS_FILES ncNotes_de_DE.ts) // added this line
# Define target properties for Android with Qt 6 as:
#    set_property(TARGET ncNotes 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}) // commented this out because it caused an error (see below)
else()
    if(ANDROID)
        add_library(ncNotes 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(ncNotes
            ${PROJECT_SOURCES}
        )
    endif()

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

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

set_target_properties(ncNotes PROPERTIES
    MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
    MACOSX_BUNDLE TRUE
    WIN32_EXECUTABLE TRUE
)

install(TARGETS ncNotes
    BUNDLE DESTINATION .
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})

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

Error Message:

  Attempt to add a custom rule to output

    /Users/xxx/ncNotes/build-ncNotes-Qt_6_3_2_for_macOS-Debug/ncNotes_de_DE.qm.rule

  which already has a custom rule.

Is there a little more documentation or an example that could help understanding this?

[Sikarjan 0]

I just redid the project with qmake an here everything works out of the box. Also adding an icon, which I was not able to do with the official documentation.

So I expect there is something wrong with the creation process of CMakeListe.txt?