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libc-package.bbclass: add LOCALE_UTF8_IS_DEFAULT 

python hard-codes the encoding of many locales; for instance, en_US is
always assumed to be ISO-8859-1, regardless of the actual encoding of
the en_US locale on the system. cf
https://hg.python.org/cpython/file/7841e9b614eb/Lib/locale.py#l1049,
getdefaultlocale(), etc. This code appears to date back to python 2.0.
The source of this hard-coding is Xorg's locale.alias but is ultimately
justified by glibc's SUPPORTED.

This causes problems on OE, because any locale lacking an explicit
encoding suffix (e.g. en_US) is UTF-8. It has been this way from the
beginning (svn r1). That is not a bug, per se -- no specification
prohibits this AFAIK. But it seems to be at odds with virtually every
other glibc-based distribution in existence. To avoid needlessly
aggravating hidden bugs that nobody else might hit, it makes sense to
disable this behavior such that locales are named precisely as specified
by SUPPORTED.

I suppose that reasonable minds may disagree on whether or not the
current behavior is prudent; at the very least, this is likely to break
IMAGE_LINGUAS settings. So let's create a new distro variable
LOCALE_UTF8_IS_DEFAULT to allow either behavior. Set it to 0 and all
your locales get named exactly like they are in SUPPORTED. Leave it at 1
to preserve current OE locale naming conventions.

(From OE-Core rev: fcde0c43f7b57ec6f8201226ad98e6e46708d288)

Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Tollerton 2016-01-21 19:46:53 -06:00 committed by Richard Purdie
parent 4f3ef90ae1
commit 3b5288f0a2
3 changed files with 9 additions and 4 deletions
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11
meta/classes/libc-package.bbclass
View File

@ -332,6 +332,8 @@ python package_do_split_gconvs () {
bb.build.exec_func("do_prep_locale_tree", d)
utf8_only = int(d.getVar('LOCALE_UTF8_ONLY', True) or 0)
utf8_is_default = int(d.getVar('LOCALE_UTF8_IS_DEFAULT', True) or 0)
encodings = {}
for locale in to_generate:
charset = supported[locale]
@ -344,10 +346,11 @@ python package_do_split_gconvs () {
else:
base = locale
# Precompiled locales are kept as is, obeying SUPPORTED, while
# others are adjusted, ensuring that the non-suffixed locales
# are utf-8, while the suffixed are not.
if use_bin == "precompiled":
# Non-precompiled locales may be renamed so that the default
# (non-suffixed) encoding is always UTF-8, i.e., instead of en_US and
# en_US.UTF-8, we have en_US and en_US.ISO-8859-1. This implicitly
# contradicts SUPPORTED.
if use_bin == "precompiled" or not utf8_is_default:
output_locale(locale, base, charset)
else:
if charset == 'UTF-8':

1
meta/conf/distro/include/default-distrovars.inc
View File

@ -7,6 +7,7 @@ KEEPUIMAGE ??= "yes"
IMAGE_LINGUAS ?= "en-us en-gb"
ENABLE_BINARY_LOCALE_GENERATION ?= "1"
LOCALE_UTF8_ONLY ?= "0"
LOCALE_UTF8_IS_DEFAULT ?= "1"
DISTRO_FEATURES_DEFAULT ?= "alsa argp bluetooth ext2 irda largefile pcmcia usbgadget usbhost wifi xattr nfs zeroconf pci 3g nfc x11"
DISTRO_FEATURES_LIBC_DEFAULT ?= "ipv4 ipv6 libc-backtrace libc-big-macros libc-bsd libc-cxx-tests libc-catgets libc-charsets libc-crypt \

1
meta/conf/documentation.conf
View File

@ -266,6 +266,7 @@ LICENSE_PATH[doc] = "Path to additional licenses used during the build."
LINUX_KERNEL_TYPE[doc] = "Defines the kernel type to be used in assembling the configuration."
LINUX_VERSION[doc] = "The Linux version from kernel.org on which the Linux kernel image being built using the OpenEmbedded build system is based. You define this variable in the kernel recipe."
LINUX_VERSION_EXTENSION[doc] = "A string extension compiled into the version string of the Linux kernel built with the OpenEmbedded build system. You define this variable in the kernel recipe."
LOCALE_UTF8_IS_DEFAULT[doc] = "If set, locale names are renamed such that those lacking an explicit encoding (e.g. en_US) will always be UTF-8, and non-UTF-8 encodings are renamed to, e.g., en_US.ISO-8859-1. Otherwise, the encoding is specified by glibc's SUPPORTED file. Not supported for precompiled locales."
LOG_DIR[doc] = "Specifies the directory to which the OpenEmbedded build system writes overall log files. The default directory is ${TMPDIR}/log"
#M