From: "Matteo F. Vescovi" <mfv@debian.org>
Date: Thu, 5 Aug 2021 22:53:36 +0200
Subject: locales_directory_install

Change where locales are installed.

Contributions by:
 Antonio Ospite <ao2@ao2.it>
 Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
---
 source/blender/blenkernel/BKE_appdir.h           |  1 +
 source/blender/blenkernel/intern/appdir.c        |  3 +++
 source/blender/blentranslation/intern/blt_lang.c | 10 +++++-----
 source/creator/CMakeLists.txt                    |  2 +-
 4 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/source/blender/blenkernel/BKE_appdir.h b/source/blender/blenkernel/BKE_appdir.h
index 6548505..69e4b5c 100644
--- a/source/blender/blenkernel/BKE_appdir.h
+++ b/source/blender/blenkernel/BKE_appdir.h
@@ -94,6 +94,7 @@ enum {
   BLENDER_SYSTEM_DATAFILES = 52,
   BLENDER_SYSTEM_SCRIPTS = 53,
   BLENDER_SYSTEM_PYTHON = 54,
+  BLENDER_SYSTEM_LOCALE = 55,
 };
 
 /* for BKE_appdir_folder_id_version only */
diff --git a/source/blender/blenkernel/intern/appdir.c b/source/blender/blenkernel/intern/appdir.c
index 08a3b7d..a9b7d38 100644
--- a/source/blender/blenkernel/intern/appdir.c
+++ b/source/blender/blenkernel/intern/appdir.c
@@ -721,6 +721,9 @@ bool BKE_appdir_folder_id_ex(const int folder_id,
       }
       return false;
 
+    case BLENDER_SYSTEM_LOCALE:
+      BLI_strncpy(path, "/usr/share/locale", FILE_MAX); break;
+
     default:
       BLI_assert_unreachable();
       break;
diff --git a/source/blender/blentranslation/intern/blt_lang.c b/source/blender/blentranslation/intern/blt_lang.c
index 91e8a81..6574810 100644
--- a/source/blender/blentranslation/intern/blt_lang.c
+++ b/source/blender/blentranslation/intern/blt_lang.c
@@ -78,9 +78,9 @@ static void free_locales(void)
   num_locales = num_locales_menu = 0;
 }
 
-static void fill_locales(void)
+static void fill_locales(char *locale_path)
 {
-  const char *const languages_path = BKE_appdir_folder_id(BLENDER_DATAFILES, "locale");
+  const char * const languages_path = locale_path;
   char languages[FILE_MAX];
   LinkNode *lines = NULL, *line;
   char *str;
@@ -88,7 +88,7 @@ static void fill_locales(void)
 
   free_locales();
 
-  BLI_join_dirfile(languages, FILE_MAX, languages_path, "languages");
+  BLI_join_dirfile(languages, FILE_MAX, locale_path, "languages");
   line = lines = BLI_file_read_as_lines(languages);
 
   /* This whole "parsing" code is a bit weak, in that it expects strictly formatted input file...
@@ -195,7 +195,7 @@ EnumPropertyItem *BLT_lang_RNA_enum_properties(void)
 void BLT_lang_init(void)
 {
 #ifdef WITH_INTERNATIONAL
-  const char *const messagepath = BKE_appdir_folder_id(BLENDER_DATAFILES, "locale");
+  const char * const messagepath = BKE_appdir_folder_id(BLENDER_SYSTEM_LOCALE, NULL);
 #endif
 
   /* Make sure LANG is correct and wouldn't cause #std::runtime_error. */
@@ -228,7 +228,7 @@ void BLT_lang_init(void)
 #ifdef WITH_INTERNATIONAL
   if (messagepath) {
     bl_locale_init(messagepath, TEXT_DOMAIN_NAME);
-    fill_locales();
+    fill_locales(messagepath);
   }
   else {
     printf("%s: 'locale' data path for translations not found, continuing\n", __func__);
diff --git a/source/creator/CMakeLists.txt b/source/creator/CMakeLists.txt
index 83779a8..9836c8f 100644
--- a/source/creator/CMakeLists.txt
+++ b/source/creator/CMakeLists.txt
@@ -407,7 +407,7 @@ install(
 # localization
 if(WITH_INTERNATIONAL)
   set(_locale_dir "${CMAKE_SOURCE_DIR}/release/datafiles/locale")
-  set(_locale_target_dir ${TARGETDIR_VER}/datafiles/locale)
+  set(_locale_target_dir ${CMAKE_INSTALL_PREFIX}/share/locale)
 
   file(GLOB _po_files "${_locale_dir}/po/*.po")
   foreach(_po_file ${_po_files})