Greetings all,
I am trying to use QT internationalization with CMake.
I have configured my cmake file as follows :
#Internalization - this should generate core_jp.ts ?
SET(rinzo_core_TRANSLATIONS
i18n/core_jp.ts
)
#these are my source files in the project
SET(FILES_TO_TRANSLATE
${rinzo_core_srcs}
${rinzo_core_moh_srcs}
)
QT4_CREATE_TRANSLATION(QM_FILES ${FILES_TO_TRANSLATE} ${rinzo_core_TRANSLATIONS})
QT4_ADD_TRANSLATION(QM ${rinzo_core_TRANSLATIONS})
But it doesnt genereate any TS nor QM files.
My questions -
1.Does Cmake(by using QT tools) generate TS files automatically extracting "tr()" methods from the source ? (that means I dont have to create any TS file and above i18n/core_jp.ts will be genereated automatically)
2.What exacly are QM files ?
Thanks in advance
In CMake documentation see QT4_CREATE_TRANSLATION and QT4_ADD_TRANSLATION macros.
So you should do the followings:
SET(Lang_files
example.ts
)
...
QT4_CREATE_TRANSLATION(LangSrcs ${Lang_files})
...
ADD_EXECUTABLE(project_name ... others sources ... ${LangSrcs})
Translation binary files (*.qm) according to http://itk.org/Wiki/CMake:How_To_Build_Qt4_Software
Also from the bottom of that website
Usage - Updating the .ts files
When you want it to process all your
source files (looking for new texts to
translate), configure cmake to turn on
UPDATE_TRANSLATIONS, and then make
your project. CMake will modify your
.ts files in your SOURCE folders in
addition to generating the .qm files.
WARNING: Be aware that CMake will be updating the source .ts files, which means that if > you do a make clean, it will DELETE your source .ts files!!! So it would be a good idea > to switch off UPDATE_TRANSLATIONS as soon as possible.
My solution relies on manually invoked lupdate and lrelease tools via add_custom_target, so the generated files are not removed on make clean and put into the source directory.
I defined a function that scans provided directory, generates/updates ts files, and compiles them into qm files in the same directory, so they can be added to the app via .qrc file
cmake_minimum_required(VERSION 3.5)
project(l10n LANGUAGES CXX)
find_package(Qt5 COMPONENTS Core LinguistTools REQUIRED)
# genearats ts and qm file searching recursively SRC_DIR
function(generate_translations CUSTOM_TARGET TS_DIR TS_FILES SRC_DIR)
set(UPADTE_TS_TARGET_NAME ${CUSTOM_TARGET}_ts)
set(UPADTE_QM_TARGET_NAME ${CUSTOM_TARGET}_qm)
add_custom_target(${UPADTE_TS_TARGET_NAME}
COMMAND ${Qt5_LUPDATE_EXECUTABLE} -recursive ${SRC_DIR} -ts ${TS_FILES}
WORKING_DIRECTORY ${TS_DIR})
add_custom_target(${UPADTE_QM_TARGET_NAME}
COMMAND ${Qt5_LRELEASE_EXECUTABLE} ${TS_FILES}
WORKING_DIRECTORY ${TS_DIR})
add_dependencies(${UPADTE_QM_TARGET_NAME} ${UPADTE_TS_TARGET_NAME} )
add_dependencies(${CUSTOM_TARGET} ${UPADTE_QM_TARGET_NAME})
endfunction()
add_executable(l10n main.cxx)
target_link_libraries(l10n Qt5::Core)
set(MY_TS_DIR ${CMAKE_CURRENT_SOURCE_DIR}/translate)
set(MY_TS_FILES foo_en.ts foo_en.ts)
set(MY_SOURCE_LOOKUP_DIR ${CMAKE_CURRENT_SOURCE_DIR})
generate_translations(l10n "${MY_TS_DIR}" "${MY_TS_FILES}" "${MY_SOURCE_LOOKUP_DIR}")
can you use lupdate.exe, linguist.exe and lrelease.exe from qt/[qt_version]/[msvc|mingw|...]/bin/ ?
you can use it like that:
Usage:
lupdate [options] [project-file]
lupdate [options] [source-file|path]... -ts ts-files
Options:
-help Display this information and exit.
-noobsolete
Drop all obsolete strings.
-extensions [,]...
Process files with the given extensions only.
The extension list must be separated with commas, not with whitespace.
Default: 'ui,c,c++,cc,cpp,cxx,ch,h,h++,hh,hpp,hxx'.
-pluralonly
Only include plural form messages.
-silent
Do not explain what is being done.
-version
Display the version of lupdate and exit
so, [source-file|path] - is you option, like i think.
try to call it with list of source files names.
