diff options
| -rw-r--r-- | CMakeLists.txt | 68 |
1 files changed, 66 insertions, 2 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 96ff980b..4223e3e4 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -10,8 +10,7 @@ # is somewhat experimental and not as portable as using ./configure. # # On some platforms this builds also xz and xzdec, but these are -# highly experimental and meant for testing only: -# - No translations +# highly experimental and meant for testing only. # # Other missing things: # - No xzgrep or other scripts or their symlinks @@ -42,6 +41,7 @@ # ############################################################################# +# NOTE: Translation support is disabled with CMake older than 3.20. cmake_minimum_required(VERSION 3.13...3.27 FATAL_ERROR) include(CMakePushCheckState) @@ -189,6 +189,22 @@ if(HAVE_CLOCK_GETTIME OR HAVE_CLOCK_GETTIME_LIBRT) tuklib_add_definition_if(ALL HAVE_CLOCK_MONOTONIC) endif() +# Translation support requires CMake 3.20 because it added the Intl::Intl +# target so we don't need to play with the individual variables. +# +# The defintion ENABLE_NLS is added only to those targets that use it, thus +# it's not done here. (xz has translations, xzdec doesn't.) +if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.20") + find_package(Intl) + find_package(Gettext) + if(Intl_FOUND) + option(ENABLE_NLS "Native Language Support (translated messages)" ON) + + # The *installed* name of the translation files is "xz.mo". + set(TRANSLATION_DOMAIN "xz") + endif() +endif() + # Options for new enough GCC or Clang on any arch or operating system: if(CMAKE_C_COMPILER_ID MATCHES GNU|Clang) # configure.ac has a long list but it won't be copied here: @@ -1489,6 +1505,54 @@ if(NOT MSVC OR MSVC_VERSION GREATER_EQUAL 1900) endif() endif() + if(ENABLE_NLS) + target_link_libraries(xz PRIVATE Intl::Intl) + + target_compile_definitions(xz PRIVATE + ENABLE_NLS + PACKAGE="${TRANSLATION_DOMAIN}" + LOCALEDIR="${CMAKE_INSTALL_FULL_LOCALEDIR}" + ) + + file(STRINGS po/LINGUAS LINGUAS) + + # Where to find .gmo files. If msgfmt is available, the .po files + # will be converted as part of the build. Otherwise we will use + # the pre-generated .gmo files which are included in XZ Utils + # tarballs by Autotools. + set(GMO_DIR "${CMAKE_CURRENT_SOURCE_DIR}/po") + + if(GETTEXT_FOUND) + # NOTE: gettext_process_po_files' INSTALL_DESTINATION is + # incompatible with how Autotools requires the .po files to + # be named. CMake would require each .po file to be named with + # the translation domain and thus each .po file would need its + # own language-specific directory (like "po/fi/xz.po"). On top + # of this, INSTALL_DESTINATION doesn't allow specifying COMPONENT + # and thus the .mo files go into "Unspecified" component. So we + # can use gettext_process_po_files to convert the .po files but + # installation needs to be done with our own code. + # + # Also, the .gmo files will go to root of the build directory + # instead of neatly into a subdirectory. This is hardcoded in + # CMake's FindGettext.cmake. + foreach(LANG IN LISTS LINGUAS) + gettext_process_po_files("${LANG}" ALL + PO_FILES "${CMAKE_CURRENT_SOURCE_DIR}/po/${LANG}.po") + endforeach() + + set(GMO_DIR "${CMAKE_CURRENT_BINARY_DIR}") + endif() + + foreach(LANG IN LISTS LINGUAS) + install( + FILES "${GMO_DIR}/${LANG}.gmo" + DESTINATION "${CMAKE_INSTALL_LOCALEDIR}/${LANG}/LC_MESSAGES" + RENAME "${TRANSLATION_DOMAIN}.mo" + COMPONENT xz) + endforeach() + endif() + install(TARGETS xz RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}" COMPONENT xz) |