populate_sdk: install UTF-8 locales in SDKs

As glibc 2.27 can't read older locale-archives, SDKs using glibc 2.27 on hosts
using glibc earlier than 2.27 won't be able to find any locales, so bitbake
won't start and Python can't use UTF-8.

So by default install all locales into the SDK.  Special-case Extensible SDKs by
installing no locales as they ship glibc in a buildtools, and that will have the
locales.

Locale installation requires cross-localedef, so add that to DEPENDS.

Also remove the explicit en_US addition in buildtools-tarball as it is now
redundant.

(From OE-Core rev: 96896568d197cd06302713c24c0f7d91bfaea6c1)

(From OE-Core rev: af9eb2ef36cb5bfd87ea61ff3390949810097c9b)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/populate_sdk_base.bbclass

@@ -20,6 +20,9 @@ def complementary_globs(featurevar, d):
 SDKIMAGE_FEATURES ??= "dev-pkgs dbg-pkgs ${@bb.utils.contains('DISTRO_FEATURES', 'api-documentation', 'doc-pkgs', '', d)}"
 SDKIMAGE_INSTALL_COMPLEMENTARY = '${@complementary_globs("SDKIMAGE_FEATURES", d)}'
 
+# List of locales to install, or "all" for all of them, or unset for none.
+SDKIMAGE_LINGUAS ?= "all"
+
 inherit rootfs_${IMAGE_PKGTYPE}
 
 SDK_DIR = "${WORKDIR}/sdk"
@@ -39,7 +42,7 @@ TOOLCHAIN_TARGET_TASK_ATTEMPTONLY ?= ""
 TOOLCHAIN_OUTPUTNAME ?= "${SDK_NAME}-toolchain-${SDK_VERSION}"
 
 SDK_RDEPENDS = "${TOOLCHAIN_TARGET_TASK} ${TOOLCHAIN_HOST_TASK}"
-SDK_DEPENDS = "virtual/fakeroot-native pixz-native"
+SDK_DEPENDS = "virtual/fakeroot-native pixz-native cross-localedef-native"
 
 # We want the MULTIARCH_TARGET_SYS to point to the TUNE_PKGARCH, not PACKAGE_ARCH as it
 # could be set to the MACHINE_ARCH

meta/classes/populate_sdk_ext.bbclass

@@ -618,7 +618,8 @@ fakeroot python do_populate_sdk_ext() {
     d.setVar('SDK_REQUIRED_UTILITIES', get_sdk_required_utilities(buildtools_fn, d))
     d.setVar('SDK_BUILDTOOLS_INSTALLER', buildtools_fn)
     d.setVar('SDKDEPLOYDIR', '${SDKEXTDEPLOYDIR}')
-
+    # ESDKs have a libc from the buildtools so ensure we don't ship linguas twice
+    d.delVar('SDKIMAGE_LINGUAS')
     populate_sdk_common(d)
 }
 

meta/recipes-core/meta/buildtools-tarball.bb

@@ -21,7 +21,6 @@ TOOLCHAIN_HOST_TASK ?= "\
     nativesdk-wget \
     nativesdk-ca-certificates \
     nativesdk-texinfo \
-    nativesdk-locale-base-en-us \
     "
 
 MULTIMACH_TARGET_SYS = "${SDK_ARCH}-nativesdk${SDK_VENDOR}-${SDK_OS}"