micropython: cannot compile with glibc because of "__P" redefined [-Werror]

Package: micropython
Maintainer: @jefferyto
OpenWrt Version: 23.05.3

Steps to reproduce:

git clone https://git.openwrt.org/openwrt/openwrt.git
cd openwrt
git checkout v23.05.3
./scripts/feeds update -a
./scripts/feeds install -a
make menuconfig
# Use glibc, enable micropython, exit.
make -j$(nproc) defconfig download clean world

Error Log:

[...]
In file included from ../../lib/berkeley-db-1.xx/PORT/include/db.h:40,
                 from ../../extmod/modbtree.c:35:
../../lib/berkeley-db-1.xx/PORT/include/cdefs.h:58: error: "__P" redefined [-Werror]
   58 | #define __P(protos)     protos          /* full-blown ANSI C */
      | 
In file included from /root/openwrt/staging_dir/toolchain-mips_24kc_gcc-12.3.0_glibc/include/features.h:491,
                 from /root/openwrt/staging_dir/toolchain-mips_24kc_gcc-12.3.0_glibc/include/bits/libc-header-start.h:33,
                 from /root/openwrt/staging_dir/toolchain-mips_24kc_gcc-12.3.0_glibc/include/stdint.h:26,
                 from /root/openwrt/staging_dir/toolchain-mips_24kc_gcc-12.3.0_glibc/lib/gcc/mips-openwrt-linux-gnu/12.3.0/include/stdint.h:9,
                 from ../../py/mpstate.h:29,
                 from ../../py/runtime.h:29,
                 from ../../extmod/modbtree.c:27:
/root/openwrt/staging_dir/toolchain-mips_24kc_gcc-12.3.0_glibc/include/sys/cdefs.h:118: note: this is the location of the previous definition
  118 | #define __P(args)       args
      | 
cc1: all warnings being treated as errors
[...]

Workaround:
Disable all warnings with "-w" (additional compiler options)

Reproduce the glibc build and inspect extmod/modbtree.c together with lib/berkeley-db-1.xx/PORT/include/cdefs.h, where the conflicting __P definitions are reported. Compare the headers involved and verify the package builds with glibc without relying on the reported -w workaround.