locale on musl libc library is not working

[nniixxoossccnn]

Game version: 0.E (stable)

Operating system: Alpine Linux 3.11

Tiles or curses: curses

Mods active:

Expected behavior

It can display Chinese correctly

Actual behavior

It is not displayed correctly

Steps to reproduce the behavior

this is my command to compile and install:

OPTS="RELEASE=1 LOCALIZE=1 USE_HOME_DIR=1 ASTYLE=1 PREFIX=/usr BACKTRACE=0 CCACHE=1"


make ${OPTS} || exit 1


make localization LANGUAGES="zh_CN zh_TW" ${OPTS} || exit 1


mkdir -pv ${PKG_DIR}/usr/share/locale || exit 1
cp -r ./lang/mo/* ${PKG_DIR}/usr/share/locale/ || exit 1

make ${OPTS} DESTDIR=${PKG_DIR} install || exit 1

When I run cataclysmdda, its multilingual display is like the LANG variable is not set correctly on Glibc

I saw it at the moment of starting:

You don't seem to have a valid Unicode locale. You may see some weird characters warned.empty boxes or question marks). You have been

[Qrox]

This also happens on MSYS2, but I'm not sure why it's happening.

[BrettDong]

Seems libstdc++ only supports C locale with non-glibc:
https://www.openwall.com/lists/musl/2020/11/30/6

So I think there is nothing we can do to fix this issue.

[BrettDong]

Just received a solution from musl mailing list so I write it down here for your reference:

1. Patch GCC with https://github.com/smaeul/portage/blob/c744774a/patches/sys-devel/gcc/gcc-5.4.0-locale.patch, line numbers may differ for newer GCC versions nowadays, anyway the patch is essentially removing the following lines in function locale::facet::_S_create_c_locale(...) in libstdc++-v3/config/locale/generic/c_locale.cc:

if (strcmp(__s, "C"))
      __throw_runtime_error(__N("locale::facet::_S_create_c_locale "
			    "name not valid"));

2. Build Cataclysm DDA with the patched libstdc++, for me I installed the patched GCC in /opt/gcc so my build command is LDFLAGS='-L/opt/gcc/lib64 -Wl,-rpath=/opt/gcc/lib64' make LOCALIZE=1 NATIVE=linux64 BACKTRACE=0 GOLD=1 RELEASE=1

3. Run Cataclysm DDA with LANG=zh_CN.UTF-8 ./cataclysm and, Hooray!