meson issues with glib2?

Name:meson
Maintainer: @Andre Heider
Openwrt branch : 21.02.1
host: Ubuntu 20.04

Question: may i know how to fix this issue? I tried "make clean" after error happened first time then "make -j1 V=sc" again.
same issue, so that i tried :

make -j1 package/feeds/packages/glib2/compile V=sc

same error copied below:

make[2]: Entering directory '/home/ouzy/kiddin9/openwrt/feeds/packages/libs/glib2'
mkdir -p /home/ouzy/kiddin9/openwrt/dl
SHELL= flock /home/ouzy/kiddin9/openwrt/tmp/.glib-2.66.4.tar.xz.flock -c '      /home/ouzy/kiddin9/openwrt/scripts/download.pl "/home/ouzy/kiddin9/openwrt/dl" "glib-2.66.4.tar.xz" "97df8670e32f9fd4f7392b0980e661dd625012015d58350da1e58e343f4af984" "" "@GNOME/glib/2.66"    '
rm -f /home/ouzy/kiddin9/openwrt/build_dir/target-x86_64_musl/glib-2.66.4/.configured_*
rm -f /home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/stamp/.glib2_installed
/home/ouzy/kiddin9/openwrt/staging_dir/host/bin/sed -e "s|@CC@|'ccache', 'gcc',|" -e "s|@CXX@|'ccache', 'g++',|" -e "s|@PKGCONFIG@|/home/ouzy/kiddin9/openwrt/staging_dir/host/bin/pkg-config|" -e "s|@CFLAGS@|'-O2', '-I/home/ouzy/kiddin9/openwrt/staging_dir/host/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/hostpkg/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/host/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/host/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/hostpkg/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/host/include',|" -e "s|@CXXFLAGS@|'-I/home/ouzy/kiddin9/openwrt/staging_dir/host/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/hostpkg/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/host/include',|" -e "s|@LDFLAGS@|'-L/home/ouzy/kiddin9/openwrt/staging_dir/host/lib', '-L/home/ouzy/kiddin9/openwrt/staging_dir/hostpkg/lib', '-L/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/host/lib', '-liconv', '-Wl,-rpath,/home/ouzy/kiddin9/openwrt/staging_dir/hostpkg/lib',|" -e "s|@PREFIX@|/home/ouzy/kiddin9/openwrt/staging_dir/hostpkg|" < /home/ouzy/kiddin9/openwrt/staging_dir/hostpkg/lib/meson/openwrt-native.txt.in > /home/ouzy/kiddin9/openwrt/build_dir/target-x86_64_musl/glib-2.66.4/openwrt-native.txt
/home/ouzy/kiddin9/openwrt/staging_dir/host/bin/sed -e "s|@CC@|'ccache_cc',|" -e "s|@CXX@|'ccache_cxx',|" -e "s|@AR@|x86_64-openwrt-linux-musl-gcc-ar|" -e "s|@STRIP@|x86_64-openwrt-linux-musl-strip|" -e "s|@NM@|x86_64-openwrt-linux-musl-gcc-nm|" -e "s|@PKGCONFIG@|/home/ouzy/kiddin9/openwrt/staging_dir/host/bin/pkg-config|" -e "s|@CFLAGS@|'-O2', '-pipe', '-fno-caller-saves', '-fno-plt', '-fhonour-copts', '-Wno-error=unused-but-set-variable', '-Wno-error=unused-result', '-fmacro-prefix-map=/home/ouzy/kiddin9/openwrt/build_dir/target-x86_64_musl/glib-2.66.4=glib-2.66.4', '-Wformat', '-Werror=format-security', '-fstack-protector', '-D_FORTIFY_SOURCE=1', '-Wl,-z,now', '-Wl,-z,relro', '-I/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/usr/lib/libiconv-stub/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/usr/lib/libintl-stub/include', '-ffunction-sections', '-fdata-sections', '-I/home/ouzy/kiddin9/openwrt/staging_dir/toolchain-x86_64_gcc-8.4.0_musl/usr/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/toolchain-x86_64_gcc-8.4.0_musl/include/fortify', '-I/home/ouzy/kiddin9/openwrt/staging_dir/toolchain-x86_64_gcc-8.4.0_musl/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/usr/lib/libiconv-stub/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/usr/lib/libintl-stub/include',|" -e "s|@CXXFLAGS@|'-O2', '-pipe', '-fno-caller-saves', '-fno-plt', '-fhonour-copts', '-Wno-error=unused-but-set-variable', '-Wno-error=unused-result', '-fmacro-prefix-map=/home/ouzy/kiddin9/openwrt/build_dir/target-x86_64_musl/glib-2.66.4=glib-2.66.4', '-Wformat', '-Werror=format-security', '-fstack-protector', '-D_FORTIFY_SOURCE=1', '-Wl,-z,now', '-Wl,-z,relro', '-I/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/usr/lib/libiconv-stub/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/usr/lib/libintl-stub/include', '-ffunction-sections', '-fdata-sections', '-I/home/ouzy/kiddin9/openwrt/staging_dir/toolchain-x86_64_gcc-8.4.0_musl/usr/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/toolchain-x86_64_gcc-8.4.0_musl/include/fortify', '-I/home/ouzy/kiddin9/openwrt/staging_dir/toolchain-x86_64_gcc-8.4.0_musl/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/usr/lib/libiconv-stub/include', '-I/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/usr/lib/libintl-stub/include',|" -e "s|@LDFLAGS@|'-L/home/ouzy/kiddin9/openwrt/staging_dir/toolchain-x86_64_gcc-8.4.0_musl/usr/lib', '-L/home/ouzy/kiddin9/openwrt/staging_dir/toolchain-x86_64_gcc-8.4.0_musl/lib', '-znow', '-zrelro', '-L/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/usr/lib/libiconv-stub/lib', '-Wl,-rpath-link=/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/usr/lib/libiconv-stub/lib', '-L/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/usr/lib/libintl-stub/lib', '-Wl,-rpath-link=/home/ouzy/kiddin9/openwrt/staging_dir/target-x86_64_musl/usr/lib/libintl-stub/lib', '-Wl,--gc-sections',|" -e "s|@ARCH@|"x86_64"|" -e "s|@CPU@|"64"|" -e "s|@ENDIAN@|little|" < /home/ouzy/kiddin9/openwrt/staging_dir/hostpkg/lib/meson/openwrt-cross.txt.in > /home/ouzy/kiddin9/openwrt/build_dir/target-x86_64_musl/glib-2.66.4/openwrt-cross.txt
/home/ouzy/kiddin9/openwrt/staging_dir/host/bin/python /home/ouzy/kiddin9/openwrt/staging_dir/hostpkg/lib/meson/meson.py  --buildtype plain --native-file /home/ouzy/kiddin9/openwrt/build_dir/target-x86_64_musl/glib-2.66.4/openwrt-native.txt --cross-file /home/ouzy/kiddin9/openwrt/build_dir/target-x86_64_musl/glib-2.66.4/openwrt-cross.txt -Ddefault_library=both -Diconv=external -Dselinux=disabled -Dlibmount=disabled -Dinternal_pcre=true -Dman=false -Ddtrace=false -Dsystemtap=false -Dgtk_doc=false -Dbsymbolic_functions=true -Dforce_posix_threads=true -Dfam=false -Dinstalled_tests=false -Dnls=disabled -Doss_fuzz=disabled -Dglib_assert=false -Dglib_checks=false -Dxattr=true -Db_lto=true /home/ouzy/kiddin9/openwrt/build_dir/target-x86_64_musl/glib-2.66.4/openwrt-build /home/ouzy/kiddin9/openwrt/build_dir/target-x86_64_musl/glib-2.66.4/openwrt-build/..
Traceback (most recent call last):
  File "/home/ouzy/kiddin9/openwrt/staging_dir/hostpkg/lib/meson/meson.py", line 18, in <module>
    from mesonbuild._pathlib import Path
  File "/home/ouzy/kiddin9/openwrt/staging_dir/hostpkg/lib/meson/mesonbuild/_pathlib.py", line 38
    def resolve(self, strict: bool = False) -> 'Path':
                            ^
SyntaxError: invalid syntax
make[2]: *** [Makefile:133: /home/ouzy/kiddin9/openwrt/build_dir/target-x86_64_musl/glib-2.66.4/.configured_efb2d3cf01c707184fb77fd0fe149f94] Error 1
make[2]: Leaving directory '/home/ouzy/kiddin9/openwrt/feeds/packages/libs/glib2'
time: package/feeds/packages/glib2/compile#0.54#0.25#0.67
    ERROR: package/feeds/packages/glib2 failed to build.
make[1]: *** [package/Makefile:114: package/feeds/packages/glib2/compile] Error 1
make[1]: Leaving directory '/home/ouzy/kiddin9/openwrt'
make: *** [/home/ouzy/kiddin9/openwrt/include/toplevel.mk:230: package/feeds/packages/glib2/compile] Error 2

nano /home/ouzy/kiddin9/openwrt/staging_dir/hostpkg/lib/meson/meson.py

#!/usr/bin/env python3

# Copyright 2016 The Meson development team

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#     http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import sys
from mesonbuild._pathlib import Path

# If we're run uninstalled, add the script directory to sys.path to ensure that
# we always import the correct mesonbuild modules even if PYTHONPATH is mangled
meson_exe = Path(sys.argv[0]).resolve()
if (meson_exe.parent / 'mesonbuild').is_dir():
    sys.path.insert(0, str(meson_exe.parent))

from mesonbuild import mesonmain

if __name__ == '__main__':
    sys.exit(mesonmain.main())

nano ./build_dir/hostpkg/pypi/meson-0.56.0/mesonbuild/_pathlib.py

# Copyright 2020 The Meson development team

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#     http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import sys
import typing as T

# Python 3.5 does not have the strict kwarg for resolve and always
# behaves like calling resolve with strict=True in Python 3.6+
#
# This module emulates the behavior of Python 3.6+ by in Python 3.5 by
# overriding the resolve method with a bit of custom logic
#
# TODO: Drop this module as soon as Python 3.5 support is dropped

if T.TYPE_CHECKING:
    from pathlib import Path
else:
    if sys.version_info.major <= 3 and sys.version_info.minor <= 5:

        # Inspired by https://codereview.stackexchange.com/questions/162426/subclassing-pathlib-path
        import pathlib
        import os

        # Can not directly inherit from pathlib.Path because the __new__
        # operator of pathlib.Path() returns a {Posix,Windows}Path object.
        class Path(type(pathlib.Path())):
            def resolve(self, strict: bool = False) -> 'Path':
                try:
                    return super().resolve()
                except FileNotFoundError:
                    if strict:
                        raise
                    return Path(os.path.normpath(str(self)))

    else:
        from pathlib import Path

from pathlib import PurePath, PureWindowsPath, PurePosixPath

Start by reading the glib2 package Makefile and the Meson entry points at staging_dir/hostpkg/lib/meson/meson.py and build_dir/hostpkg/pypi/meson-0.56.0/mesonbuild/_pathlib.py. Re-run the shown package/feeds/packages/glib2/compile command in the reported environment; done means the Meson configuration step completes without the displayed SyntaxError.