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i18n: check for gettext rather than just calling msgfmt

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- *secretly* this is already done in the KF5 i18n modules,
  so the resizefs was already requiring FindGettext.
- we don't actually use the gettext modules' CMake macros,
  so explain why in the module.
This commit is contained in:
Adriaan de Groot 2020-08-28 00:49:23 +02:00
parent 392b4d33a0
commit 6b6267e3a4
1 changed files with 25 additions and 3 deletions
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28
CMakeModules/CalamaresAddTranslations.cmake
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@ -12,6 +12,15 @@
include( CMakeParseArguments )
# The Gettext module is still old-fashioned, ALLCAPS variables
find_package( Gettext )
set_package_properties( GETTEXT PROPERTIES
DESCRIPTION "GNU gettext (translation) tools."
URL "https://www.gnu.org/software/gettext/"
PURPOSE "Gettext is used in the translation of Python modules."
TYPE REQUIRED
)
# Installs a directory containing language-code-labeled subdirectories with
# gettext data into the appropriate system directory. Allows renaming the
# .mo files during install to avoid namespace clashes.
@ -44,8 +53,13 @@ function( install_calamares_gettext_translations )
endif()
string( REGEX REPLACE ".mo$" ".po" TRANSLATION_SOURCE_FILENAME "${TRANSLATION_FILENAME}" )
message(STATUS "Installing gettext translations for ${TRANSLATION_NAME}")
message(STATUS " Installing ${TRANSLATION_FILENAME} from ${TRANSLATION_SOURCE_DIR}")
if ( GETTEXT_FOUND AND GETTEXT_MSGFMT_EXECUTABLE )
message( STATUS "Installing gettext translations for ${TRANSLATION_NAME}")
message( STATUS " Installing ${TRANSLATION_FILENAME} from ${TRANSLATION_SOURCE_DIR}")
else()
message( WARNING "Gettext translations requested for ${TRANSLATION_NAME}, but gettext was not found." )
return()
endif()
set( TARGET_NAME calamares-gettext-translations-${NAME} )
if( NOT TARGET "${TARGET_NAME}" )
@ -62,10 +76,18 @@ function( install_calamares_gettext_translations )
if( lang STREQUAL "en" )
message( STATUS " Skipping ${TRANSLATION_NAME} translations for en_US" )
else()
# We **don't** use the gettext macro's here because the source
# structure doesn't match: we are calling this once per language
# for all of Calamares's languages, while the gettext module
# expects it to be called once, for a given language source-dir.
#
# Using any of the gettext macros just gets us multiple rules
# for python.gmo, and it wants to use msgmerge, besides, which
# doesn't fit our Transifex workflow.
make_directory( ${lang_mo_dir} )
add_custom_command(
OUTPUT ${lang_mo}
COMMAND msgfmt
COMMAND ${GETTEXT_MSGFMT_EXECUTABLE}
ARGS -o ${lang_mo} ${lang_po}
MAIN_DEPENDENCY ${lang_po}
)