No longer built with cxx11

[donmor]

Describe the bug

I'm trying to build AUR package dosbox-x-sdl2-git in a qemu machine (architecture is loongarch64) with --enable-force-cxx11. Eventually it ends up with errors logged in the attached file:
dosbox-x-sdl2-git-3_2023.10.06.r116.g33be1ac77-1-loong64-build.log

Steps to reproduce the behaviour

1. Clone dosbox-x-sdl2-git from AUR
2. vim PKGBUILD to add option --enable-force-cxx11
3. run makepkg

Expected behavior

No response

What operating system(s) this bug have occurred on?

Arch Linux, loongarch64, qemu

What version(s) of DOSBox-X have this bug?

pkgver=2023.10.06.r116.g33be1ac77

Used configuration

No response

Output log

No response

Additional information

No response

Have you checked that no similar bug report(s) exist?

• I have searched and didn't find any similar bug report.

Code of Conduct & Contributing Guidelines

• I agree to follow the code of conduct and the contributing guidelines.