How to use the QtLinguist, easy way?

Artem Shapovalov

@jsulm I tried to run:

C:\<path to cmake from Qt\cmake.exe --build . --target <my project name>_lupdate

and got an error:

Error: could not load cache

What should I do before the build this target?

kkoehne

@Artem-Shapovalov

Have you navigated to the build directory of the project (displayed in Qt Creator under Projects > Build Settings > Build Directory)?

Anyhow, if you don't feel confident on the command line, you can also trigger the target from within Qt Creator: Press Ctrl+K (to open the navigator), and then type

cm <my project name>_lupdate

Artem Shapovalov

@kkoehne I checked this feature and it's don't build unknown targets.

@kkoehne , @jsulm , thank you guys, I explore a little bit more, but I decided to use another internationalization tool. Maybe later I would return to this Qt feature.

kkoehne

@Artem-Shapovalov said in How to use the QtLinguist, easy way?:

@kkoehne I checked this feature and it's don't build unknown targets.

THat's weird. If the target is 'unknown', then it doesn't exist in CMake, I'd claim.

@kkoehne , @jsulm , thank you guys, I explore a little bit more, but I decided to use
another internationalization tool. Maybe later I would return to this Qt feature.

Out of interest: Which tool are you going for?

Artem Shapovalov

@kkoehne I write my own. Less than 100 lines of code, but at present moment cover all of my needs.

ekkescorner

@kkoehne now I'm fighting with this. just ported all my apps from 5.15 to 6.6 using QMake.
Now as next step: port from QMake to CMake
BTW: doing it all from inside QtCreator, no cmdline
all my apps rely on translations and this works well in 5.15/QMake:
changed strings - build project - external cmd lupdate - QtLinguist - extrernal cmd lrelease
External commands don't work as reported here.
tried with QtCreator Linguist Example arrowpad

qt6_add_translations(arrowpad
    TS_FILES arrowpad_fr.ts arrowpad_nl.ts 
    QM_FILES_OUTPUT_VARIABLE qm_files)
install(FILES ${qm_files} DESTINATION ${INSTALL_EXAMPLEDIR})

added arrowpad_de.ts, saved CMakeLists.txt and the file was created.
build the project, but all .ts files are empty
tried your recommendation:

cm arrowpad_lupdate

doesnt work. while typing (macOS) Cmd-Kcm arrowpad there's only arrowpad_lrelease listed but no arrowpad_lupdate
any idea ?

kkoehne

@ekkescorner , have you actually tried running

cm arrowpad_lupdate

from Qt Creator? For me the command never shows up in autocomplete (which needs to be studied, created https://bugreports.qt.io/browse/QTCREATORBUG-29946), but I can run it, with Qt 6.6.0.

ekkescorner

@kkoehne aaah. typing it it's working. was confused because autocomplete missed it.
THX - no I can go on to the next CMake features :)

Adaita Kumar Behera

I was struggling with the same issue and I landed here. It helped. Now, I made the following changes to my cmake script to make it seamless.

add_custom_target(run_app_lupdate
COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR} --target app_lupdate
COMMENT "Running app_lupdate"
)
add_dependencies(app run_app_lupdate)

Here "app' is the traget name

ekkescorner

you don't need this. Qt 6.7 / QtC 13.0:
there are automatically generated targets there, you can execute:
update_translations
release_translations

cm_update_translations