musl-locales: Add package

This package will provide a limited set of localedata for musl based
systems. It will fill in into images when IMAGE_LINGUAS variable is set
however the choice is limited to the given 13 locales as of now.

e.g.
IMAGE_LINGUAS ?= "de-de fr-fr en-gb"

would work fine

Default locale can be set by exporting LANG=<locale> in /etc/profile or some
such file e.g.

export LANG=de_DE.UTF-8

This will also help in ptest coverage with musl where some test packages
expect locales e.g. pango to name one.

Do not empty out IMAGE_LINGUAS forcibly for musl anymore

(From OE-Core rev: 5643f9722db250ac9eb4f955b02500420cb29556)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/conf/distro/include/maintainers.inc

@@ -519,6 +519,7 @@ RECIPE_MAINTAINER:pn-mtd-utils = "Denys Dmytriyenko <denis@denix.org>"
 RECIPE_MAINTAINER:pn-mtdev = "Anuj Mittal <anuj.mittal@intel.com>"
 RECIPE_MAINTAINER:pn-mtools = "Anuj Mittal <anuj.mittal@intel.com>"
 RECIPE_MAINTAINER:pn-musl = "Khem Raj <raj.khem@gmail.com>"
+RECIPE_MAINTAINER:pn-musl-locales = "Khem Raj <raj.khem@gmail.com>"
 RECIPE_MAINTAINER:pn-musl-obstack = "Khem Raj <raj.khem@gmail.com>"
 RECIPE_MAINTAINER:pn-musl-utils = "Khem Raj <raj.khem@gmail.com>"
 RECIPE_MAINTAINER:pn-nasm = "Richard Purdie <richard.purdie@linuxfoundation.org>"

meta/conf/distro/include/tclibc-musl.inc

@@ -10,6 +10,7 @@ PREFERRED_PROVIDER_virtual/libc ?= "musl"
 PREFERRED_PROVIDER_virtual/libiconv ?= "musl"
 PREFERRED_PROVIDER_virtual/libintl ?= "musl"
 PREFERRED_PROVIDER_virtual/crypt ?= "musl"
+PREFERRED_PROVIDER_virtual/libc-locale ?= "musl-locales"
 PREFERRED_PROVIDER_virtual/nativesdk-libintl ?= "nativesdk-glibc"
 PREFERRED_PROVIDER_virtual/nativesdk-libiconv ?= "nativesdk-glibc"
 
@@ -19,8 +20,6 @@ DISTRO_FEATURES_BACKFILL_CONSIDERED += "ldconfig"
 
 CXXFLAGS += "-fvisibility-inlines-hidden"
 
-IMAGE_LINGUAS = ""
-
 LIBC_DEPENDENCIES = "\
     musl \
     musl-dbg \

meta/recipes-core/musl/musl-locales_git.bb

@@ -0,0 +1,75 @@
+# Copyright (C) 2022 Khem Raj <raj.khem@gmail.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+#
+SUMMARY = "Locales support for musl"
+HOMEPAGE = "https://gitlab.com/rilian-la-te/musl-locales"
+LICENSE = "MIT & LGPL-3.0-or-later"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=cf5713fba707073020b1db2acaa73e78 \
+                    file://LICENSE.MIT;md5=a4f1c6864a83ddf4b754cdab7d593523"
+
+SRC_URI = "git://gitlab.com/rilian-la-te/musl-locales;protocol=https;branch=master"
+
+PV = "1.0+git${SRCPV}"
+SRCREV = "1101fb2bcdd189cd9415b8bd1c775eb43527d25c"
+
+S = "${WORKDIR}/git"
+
+DEPENDS = "virtual/libintl"
+
+PROVIDES = "virtual/libc-locale"
+
+inherit cmake gettext
+
+EXTRA_OECMAKE = ""
+#
+# We will skip parsing for non-musl systems
+python () {
+    if d.getVar('TCLIBC') != "musl":
+        raise bb.parse.SkipRecipe("Only use it with Musl C library")
+}
+
+# only locale binaries are under GPL-3.0-or-later others are MIT
+LICENSE:${PN} = "LGPL-3.0-or-later"
+LICENSE:locale-base-ch-de = "MIT"
+LICENSE:locale-base-de-ch = "MIT"
+LICENSE:locale-base-de-de = "MIT"
+LICENSE:locale-base-en-gb = "MIT"
+LICENSE:locale-base-en-us = "MIT"
+LICENSE:locale-base-es-es = "MIT"
+LICENSE:locale-base-fr-fr = "MIT"
+LICENSE:locale-base-it-it = "MIT"
+LICENSE:locale-base-nb-no = "MIT"
+LICENSE:locale-base-nl-nl = "MIT"
+LICENSE:locale-base-pt-br = "MIT"
+LICENSE:locale-base-ru-ru = "MIT"
+LICENSE:locale-base-sv-se = "MIT"
+
+PACKAGES =+ "locale-base-ch-de \
+             locale-base-de-ch \
+             locale-base-de-de \
+             locale-base-en-gb \
+             locale-base-en-us \
+             locale-base-es-es \
+             locale-base-fr-fr \
+             locale-base-it-it \
+             locale-base-nb-no \
+             locale-base-nl-nl \
+             locale-base-pt-br \
+             locale-base-ru-ru \
+             locale-base-sv-se \
+             "
+FILES:locale-base-ch-de += "${datadir}/i18n/locales/musl/ch_DE.UTF-8"
+FILES:locale-base-de-ch += "${datadir}/i18n/locales/musl/de_CH.UTF-8"
+FILES:locale-base-de-de += "${datadir}/i18n/locales/musl/de_DE.UTF-8"
+FILES:locale-base-en-gb += "${datadir}/i18n/locales/musl/en_GB.UTF-8"
+FILES:locale-base-en-us += "${datadir}/i18n/locales/musl/en_US.UTF-8"
+FILES:locale-base-es-es += "${datadir}/i18n/locales/musl/es_ES.UTF-8"
+FILES:locale-base-fr-fr += "${datadir}/i18n/locales/musl/fr_FR.UTF-8"
+FILES:locale-base-it-it += "${datadir}/i18n/locales/musl/it_IT.UTF-8"
+FILES:locale-base-nb-no += "${datadir}/i18n/locales/musl/nb_NO.UTF-8"
+FILES:locale-base-nl-nl += "${datadir}/i18n/locales/musl/nl_NL.UTF-8"
+FILES:locale-base-pt-br += "${datadir}/i18n/locales/musl/pt_BR.UTF-8"
+FILES:locale-base-ru-ru += "${datadir}/i18n/locales/musl/ru_RU.UTF-8"
+FILES:locale-base-sv-se += "${datadir}/i18n/locales/musl/sv_SE.UTF-8"
+
+UPSTREAM_CHECK_COMMITS = "1"