<div dir="ltr"><pre style="margin-top:0px;margin-bottom:0px">Here is a small snipped I wanted to share about generation of qt translation</pre><pre style="margin-top:0px;margin-bottom:0px">files.</pre><pre style="margin-top:0px;margin-bottom:0px"><br></pre><pre style="margin-top:0px;margin-bottom:0px">The Qt translations are managed using two files: ts and qm. The ts files are
edited by translators and updated from source files. Therefore, they must be
added to the repository. To include the translations in the application, qm
binary file is generated. This file is generated in the build tree and must
not be added to the repository.
Qt5 suggests to use qt5_create_translation() macro. However, this macro
regenerate the ts file at build time. It is very inconvenient when working
on multiple branches, because it forces to either commit the modified
translation file or discard the update. Instead, we use a custom target
"make translations" that update ts files only when requested explicitely.
set(TS_FILES
${CMAKE_CURRENT_SOURCE_DIR}/translations/app_fr.ts
)
file(GLOB_RECURSE TS_SOURCES "*.cpp" "*.h" "*.ui")
add_custom_target(translations)
foreach(_ts_file ${TS_FILES})</pre><pre style="margin-top:0px;margin-bottom:0px"> # generate a sensible name for this translation file
get_filename_component(_ts_name ${_ts_file} NAME_WE)</pre><pre style="margin-top:0px;margin-bottom:0px"> # call lupdate ourselves
add_custom_command(
OUTPUT "${_ts_file}"
DEPENDS ${TS_SOURCES}
COMMAND ${Qt5_LUPDATE_EXECUTABLE} -recursive ${CMAKE_CURRENT_SOURCE_DIR} -ts ${_ts_file}
)</pre><pre style="margin-top:0px;margin-bottom:0px"> # create a target that depends on the generated files
add_custom_target(translate_${_ts_name} DEPENDS ${_ts_file})</pre><pre style="margin-top:0px;margin-bottom:0px"> # attach the custom target for this ts file to the parent target
add_dependencies(translations translate_${_ts_name})
endforeach()
<br></pre><pre style="margin-top:0px;margin-bottom:0px"># generate qm files
qt5_add_translation(QM_FILES ${TS_FILES})
configure_file(translations.qrc ${CMAKE_CURRENT_BINARY_DIR} COPYONLY)<br></pre><pre style="margin-top:0px;margin-bottom:0px"><br></pre><pre style="margin-top:0px;margin-bottom:0px">add_executable(App</pre><pre style="margin-top:0px;margin-bottom:0px"> ${QM_FILES}</pre><pre style="margin-top:0px;margin-bottom:0px"> ${CMAKE_CURRENT_BINARY_DIR}/translations.qrc</pre><pre style="margin-top:0px;margin-bottom:0px">)</pre><pre style="margin-top:0px;margin-bottom:0px"><br></pre><pre style="margin-top:0px;margin-bottom:0px">Cheers,</pre><pre style="margin-top:0px;margin-bottom:0px"><br></pre><pre style="margin-top:0px;margin-bottom:0px">Francis</pre></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Francis Giraldeau</div></div>