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#[=============================================================[
Although CMake provides functions for processing .po files,
it cannot be used because GETTEXT_PROCESS_PO_FILES
installs files with an invalid name. For example: for
an en.gmo file, we should get the
${LOCALE_DIR}/${language}/LC_MESSAGES/${project_name}.mo
and not
${LOCALE_DIR}/${language}/LC_MESSAGES/en.mo
as it does, so we need to get the possibility to pass
${project_name} to that function and use it for file naming.
We also added an issue to CMake:
https://gitlab.kitware.com/cmake/cmake/-/issues/20792
#]=============================================================]
find_program(MSGFMT_EXECUTABLE msgfmt)
if(MSGFMT_EXECUTABLE)
execute_process(COMMAND ${MSGFMT_EXECUTABLE} --version
OUTPUT_VARIABLE GETTEXT_VERSION
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE
)
get_filename_component(MSGMERGE_NAME ${MSGFMT_EXECUTABLE} NAME)
get_filename_component(MSGMERGE_NAMEWE ${MSGFMT_EXECUTABLE} NAME_WE)
if (GETTEXT_VERSION MATCHES "^(${MSGMERGE_NAME}|${MSGMERGE_NAMEWE}) \\([^\\)]*\\) ([0-9\\.]+[^ \n]*)")
set(GETTEXT_VERSION_STRING "${CMAKE_MATCH_2}")
endif()
unset(GETTEXT_VERSION)
unset(MSGMERGE_NAME)
unset(MSGMERGE_NAMEWE)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Gettext
REQUIRED_VARS GETTEXT_MSGMERGE_EXECUTABLE GETTEXT_MSGFMT_EXECUTABLE
VERSION_VAR GETTEXT_VERSION_STRING
)
function(SYNFIG_PROCESS_PO_FILES)
set(_options ALL)
set(_targetName TARGET_NAME)
set(_moName MO_NAME)
set(_installDestination INSTALL_DESTINATION)
set(_language LANGUAGES)
set(_moFiles)
cmake_parse_arguments(
_parsedArguments
"${_options}"
"${_targetName};${_moName};${_installDestination}"
"${_language}"
${ARGN}
)
if(MSGFMT_EXECUTABLE)
foreach(_current_LANGUAGE ${_parsedArguments_LANGUAGES})
set(_poFile ${CMAKE_CURRENT_SOURCE_DIR}/${_current_LANGUAGE}.po)
set(_moDirectory ${SYNFIG_BUILD_ROOT}/share/locale/${_current_LANGUAGE}/LC_MESSAGES)
set(_moFile ${_moDirectory}/${_parsedArguments_MO_NAME}.mo)
add_custom_command(OUTPUT ${_moFile}
COMMAND ${CMAKE_COMMAND} -E make_directory ${_moDirectory}
COMMAND ${MSGFMT_EXECUTABLE} -o ${_moFile} ${_poFile}
WORKING_DIRECTORY "."
DEPENDS ${_poFile}
)
if(_parsedArguments_INSTALL_DESTINATION)
install(
FILES ${_moFile} DESTINATION
${_parsedArguments_INSTALL_DESTINATION}/${_current_LANGUAGE}/LC_MESSAGES/
)
endif()
list(APPEND _moFiles ${_moFile})
endforeach()
if(NOT TARGET build_pofiles)
add_custom_target(build_pofiles)
endif()
if(_parsedArguments_TARGET_NAME)
if(_parsendArguments_ALL)
add_custom_target(${_parsedArguments_TARGET_NAME} ALL DEPENDS ${_moFiles})
else()
add_custom_target(${_parsedArguments_TARGET_NAME} DEPENDS ${_moFiles})
endif()
add_dependencies(build_pofiles ${_parsedArguments_TARGET_NAME})
endif()
else()
message(STATUS "-- Could not find msgfmt: Cannot process .po files for ${_parsedArguments_TARGET_NAME}.")
endif()
endfunction()
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