昨天我注意到了这个问题，在带有嵌入式linux的设备上，行为是这样的：
$ python3
Python 3.5.6 (default, Feb 18 2019, 15:31:50)
[GCC 8.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> "\u00df"
'\xdf'
在debian 9上是：
$ python3
Python 3.5.3 (default, Sep 27 2018, 17:25:39)
[GCC 6.3.0 20170516] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> "\u00df"
'ß'
我尝试添加两个受this启发的.bbappend文件
根据here，它也有GLIBC_GENERATE_LOCALES和IMAGE_LINGUAS，但仍然无法使用。
实际上，在构建过程中会引发一些警告：
WARNING: bash-4.4.18-r0 do_package_qa: QA Issue: bash-ptest rdepends on locale-base-de-de, but it isn't a build dependency? [build-deps]
WARNING: python3-3.5.6-r1.0 do_configure: QA Issue: python3: configure was passed unrecognised options: --enable-unicode [unknown-configure-option]
WARNING: libxml2-2.9.8-r0 do_package_qa: QA Issue: libxml2-ptest rdepends on locale-base-en-us, but it isn't a build dependency? [build-deps]
WARNING: glib-2.0-1_2.58.0-r0 do_package_qa: QA Issue: glib-2.0-ptest rdepends on locale-base-de-de, but it isn't a build dependency? [build-deps]
WARNING: glib-2.0-1_2.58.0-r0 do_package_qa: QA Issue: glib-2.0-ptest rdepends on locale-base-el-gr, but it isn't a build dependency? [build-deps]
WARNING: glib-2.0-1_2.58.0-r0 do_package_qa: QA Issue: glib-2.0-ptest rdepends on locale-base-en-gb, but it isn't a build dependency? [build-deps]
WARNING: glib-2.0-1_2.58.0-r0 do_package_qa: QA Issue: glib-2.0-ptest rdepends on locale-base-es-es, but it isn't a build dependency? [build-deps]
WARNING: glib-2.0-1_2.58.0-r0 do_package_qa: QA Issue: glib-2.0-ptest rdepends on locale-base-fa-ir, but it isn't a build dependency? [build-deps]
WARNING: glib-2.0-1_2.58.0-r0 do_package_qa: QA Issue: glib-2.0-ptest rdepends on locale-base-hr-hr, but it isn't a build dependency? [build-deps]
WARNING: glib-2.0-1_2.58.0-r0 do_package_qa: QA Issue: glib-2.0-ptest rdepends on locale-base-ja-jp.euc-jp, but it isn't a build dependency? [build-deps]
WARNING: glib-2.0-1_2.58.0-r0 do_package_qa: QA Issue: glib-2.0-ptest rdepends on locale-base-lt-lt, but it isn't a build dependency? [build-deps]
WARNING: glib-2.0-1_2.58.0-r0 do_package_qa: QA Issue: glib-2.0-ptest rdepends on locale-base-ru-ru, but it isn't a build dependency? [build-deps]
WARNING: glib-2.0-1_2.58.0-r0 do_package_qa: QA Issue: glib-2.0-ptest rdepends on locale-base-tr-tr, but it isn't a build dependency? [build-deps]
有什么想法我还能尝试吗？
顺便说一下，这是系统上命令“ locale”的输出：
$ locale
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=en_US.UTF-8
看起来不是很健康，但不确定如何处理。