image: Add locale archive optimisation

Refactor the locale archive function from the SDK to also make it work during
general image creation. This reduces the size of the locales from 900MB to 220MB
in core-image-lsb-sdk.

The exception handling around subprocess was dropped as the standard subprocess
exception printing is better handled than the catchall exception.

(From OE-Core rev: 8ffd93bdb09b0a4a84b27dafcd684c6abba392ed)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/meta/lib/oe/package_manager.py b/meta/lib/oe/package_manager.py
index 64c8a91216..6011e87350 100644
--- a/meta/lib/oe/package_manager.py
+++ b/meta/lib/oe/package_manager.py
@@ -12,6 +12,7 @@ import oe.path
 import string
 from oe.gpg_sign import get_signer
 import hashlib
+import fnmatch
 
 # this can be used by all PM backends to create the index files in parallel
 def create_index(arg):
@@ -89,6 +90,47 @@ def failed_postinsts_warn(pkgs, log_path):
 If deferring to first boot wasn't the intent, then scriptlet failure may mean an issue in the recipe, or a regression elsewhere.
 Details of the failure are in %s.""" %(pkgs, log_path))
 
+def generate_locale_archive(d, rootfs, target_arch, localedir):
+    # Pretty sure we don't need this for locale archive generation but
+    # keeping it to be safe...
+    locale_arch_options = { \
+        "arm": ["--uint32-align=4", "--little-endian"],
+        "armeb": ["--uint32-align=4", "--big-endian"],
+        "aarch64": ["--uint32-align=4", "--little-endian"],
+        "aarch64_be": ["--uint32-align=4", "--big-endian"],
+        "sh4": ["--uint32-align=4", "--big-endian"],
+        "powerpc": ["--uint32-align=4", "--big-endian"],
+        "powerpc64": ["--uint32-align=4", "--big-endian"],
+        "mips": ["--uint32-align=4", "--big-endian"],
+        "mipsisa32r6": ["--uint32-align=4", "--big-endian"],
+        "mips64": ["--uint32-align=4", "--big-endian"],
+        "mipsisa64r6": ["--uint32-align=4", "--big-endian"],
+        "mipsel": ["--uint32-align=4", "--little-endian"],
+        "mipsisa32r6el": ["--uint32-align=4", "--little-endian"],
+        "mips64el": ["--uint32-align=4", "--little-endian"],
+        "mipsisa64r6el": ["--uint32-align=4", "--little-endian"],
+        "i586": ["--uint32-align=4", "--little-endian"],
+        "i686": ["--uint32-align=4", "--little-endian"],
+        "x86_64": ["--uint32-align=4", "--little-endian"]
+    }
+    if target_arch in locale_arch_options:
+        arch_options = locale_arch_options[target_arch]
+    else:
+        bb.error("locale_arch_options not found for target_arch=" + target_arch)
+        bb.fatal("unknown arch:" + target_arch + " for locale_arch_options")
+
+    # Need to set this so cross-localedef knows where the archive is
+    env = dict(os.environ)
+    env["LOCALEARCHIVE"] = oe.path.join(localedir, "locale-archive")
+
+    for name in os.listdir(localedir):
+        path = os.path.join(localedir, name)
+        if os.path.isdir(path):
+            cmd = ["cross-localedef", "--verbose"]
+            cmd += arch_options
+            cmd += ["--add-to-archive", path]
+            subprocess.check_output(cmd, env=env, stderr=subprocess.STDOUT)
+
 class Indexer(object, metaclass=ABCMeta):
     def __init__(self, d, deploy_dir):
         self.d = d
@@ -536,6 +578,13 @@ class PackageManager(object, metaclass=ABCMeta):
                          "'%s' returned %d:\n%s" %
                          (' '.join(cmd), e.returncode, e.output.decode("utf-8")))
 
+        target_arch = self.d.getVar('TARGET_ARCH')
+        localedir = oe.path.join(self.target_rootfs, self.d.getVar("libdir"), "locale")
+        if os.path.exists(localedir) and os.listdir(localedir):
+            generate_locale_archive(self.d, self.target_rootfs, target_arch, localedir)
+            # And now delete the binary locales
+            self.remove(fnmatch.filter(self.list_installed(), "glibc-binary-localedata-*"), False)
+
     def deploy_dir_lock(self):
         if self.deploy_dir is None:
             raise RuntimeError("deploy_dir is not set!")