Big Surでのpythonインストール

前提・実現したいこと

MacOSをBigSurにアップデートし、pythonをインストールしようとした際に
以下のエラーが発生しインストールできませんでした。
どなたか解決策をいただけると助かります。
(前OSのCatalinaでは正常に動作しておりました)

発生している問題・エラーメッセージ

pyenv install 3.7.7
python-build: use openssl@1.1 from homebrew
python-build: use readline from homebrew
Downloading Python-3.7.7.tar.xz...
-> https://www.python.org/ftp/python/3.7.7/Python-3.7.7.tar.xz
Installing Python-3.7.7...
pyepython-build: use readline from homebrew
python-build: use zlib from xcode sdk
nv
BUILD FAILED (OS X 11.0.1 using python-build 20180424)

Inspect or clean up the working tree at /var/folders/fx/cdyjcdmj4z7938q2c1p7zbq80000gn/T/python-build.20201123001125.31932
Results logged to /var/folders/fx/cdyjcdmj4z7938q2c1p7zbq80000gn/T/python-build.20201123001125.31932.log

Last 10 log lines:
checking for --enable-universalsdk... no
checking for --with-universal-archs... no
checking MACHDEP... checking for --without-gcc... no
checking for --with-icc... no
checking for gcc... clang
checking whether the C compiler works... no
configure: error: in /var/folders/fx/cdyjcdmj4z7938q2c1p7zbq80000gn/T/python-build.20201123001125.31932/Python-3.7.7': configure: error: C compiler cannot create executables See config.log' for more details
make: *** No targets specified and no makefile found. Stop.

試したこと

検索し以下のことを試してもダメでした。
https://dev.to/kojikanao/install-python-3-8-0-via-pyenv-on-bigsur-4oee
以下のエラーに変わりました。
CFLAGS="-I$(brew --prefix openssl)/include -I$(brew --prefix bzip2)/include -I$(brew --prefix readline)/include -I$(xcrun --show-sdk-path)/usr/include" LDFLAGS="-L$(brew --prefix openssl)/lib -L$(brew --prefix readline)/lib -L$(brew --prefix zlib)/lib -L$(brew --prefix bzip2)/lib" pyenv install --patch 3.8.0 < <(curl -sSL https://github.com/python/cpython/commit/8ea6353.patch?full_index\=1)
¥python-build: use openssl@1.1 from homebrew
python-build: use readline from homebrew
Downloading Python-3.8.0.tar.xz...
-> https://www.python.org/ftp/python/3.8.0/Python-3.8.0.tar.xz
Installing Python-3.8.0...
patching file Misc/NEWS.d/next/macOS/2020-06-24-13-51-57.bpo-41100.mcHdc5.rst
patching file configure
Hunk #1 succeeded at 3394 (offset -32 lines).
patching file configure.ac
Hunk #1 succeeded at 498 (offset -12 lines).
python-build: use readline from homebrew
python-build: use zlib from xcode sdk

BUILD FAILED (OS X 11.0.1 using python-build 20180424)

Inspect or clean up the working tree at /var/folders/fx/cdyjcdmj4z7938q2c1p7zbq80000gn/T/python-build.20201123124457.65141
Results logged to /var/folders/fx/cdyjcdmj4z7938q2c1p7zbq80000gn/T/python-build.20201123124457.65141.log

Last 10 log lines:
return _bootstrap(
File "/private/var/folders/fx/cdyjcdmj4z7938q2c1p7zbq80000gn/T/python-build.20201123124457.65141/Python-3.8.0/Lib/ensurepip/init.py", line 119, in _bootstrap
return _run_pip(args + [p[0] for p in _PROJECTS], additional_paths)
File "/private/var/folders/fx/cdyjcdmj4z7938q2c1p7zbq80000gn/T/python-build.20201123124457.65141/Python-3.8.0/Lib/ensurepip/init.py", line 27, in _run_pip
import pip._internal
File "<frozen zipimport>", line 241, in load_module
File "<frozen zipimport>", line 709, in _get_module_code
File "<frozen zipimport>", line 570, in _get_data
zipimport.ZipImportError: can't decompress data; zlib not available
make: *** [install] Error 1