rbenvでruby2.5.8をinstallする際にBUILD FAILEDが起きる

% rbenv install 2.5.8

Downloading openssl-1.1.1k.tar.gz...
-> https://dqw8nmjcqpjn7.cloudfront.net/892a0875b9872acd04a9fde79b1f943075d5ea162415de3047c327df33fbaee5
Installing openssl-1.1.1k...

BUILD FAILED (macOS 11.2.3 using ruby-build 20210804)

Inspect or clean up the working tree at /var/folders/gt/sqqp1dc90vd55f2_hzlgqlkr0000gn/T/ruby-build.20210901183956.7884.oen8q2
Results logged to /var/folders/gt/sqqp1dc90vd55f2_hzlgqlkr0000gn/T/ruby-build.20210901183956.7884.log

Last 10 log lines:
      _bio_s_mempacket_test in ssltestlib.o
      _bio_s_always_retry in ssltestlib.o
      _create_ssl_ctx_pair in ssltestlib.o
  "_test_ulong_eq", referenced from:
      _create_ssl_connection in ssltestlib.o
ld: symbol(s) not found for architecture x86_64
make[1]: *** [test/asn1_encode_test] Error 1
clang-12: error: linker command failed with exit code 1 (use -v to see invocation)
make[1]: *** [test/asynciotest] Error 1
make: *** [all] Error 2

% RUBY_CONFIGRUBY_CONFIGURE_OPTS="--with-openssl-dir=$(brew --prefix openssl@1.1)  --with-readline-dir=$(brew --prefix readline)" rbenv install 2.5.8
Downloading ruby-2.5.8.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.8.tar.bz2
error: failed to download ruby-2.5.8.tar.bz2

BUILD FAILED (macOS 11.2.3 using ruby-build 20210804)

% rbenv install rbx-2.5.8

ERROR: Rubinius will not be able to compile using Apple's LLVM-based
build tools on OS X. You will need to install LLVM 3.5 first.

TO FIX THE PROBLEM: Install Homebrew's llvm package with this
command: brew install llvm@3.5

BUILD FAILED (macOS 11.2.3 using ruby-build 20210804)

% clang -v
Homebrew clang version 12.0.1
Target: x86_64-apple-darwin20.3.0
Thread model: posix
InstalledDir: /usr/local/opt/llvm/bin

% xcode-select --install
xcode-select: error: command line tools are already installed, use "Software Update" to install updates

% xcrun --sdk macosx --show-sdk-path
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk

% which ar; which ranlib
/usr/local/opt/binutils/bin/ar
/usr/local/opt/binutils/bin/ranlib
% brew uninstall binutils
Uninstalling /usr/local/Cellar/binutils/2.37... (82 files, 158.8MB)
% which ar; which ranlib
/usr/bin/ar
/usr/bin/ranlib

% rbenv install 2.5.8

Downloading openssl-1.1.1k.tar.gz...
-> https://dqw8nmjcqpjn7.cloudfront.net/892a0875b9872acd04a9fde79b1f943075d5ea162415de3047c327df33fbaee5
Installing openssl-1.1.1k...
Installed openssl-1.1.1k to /Users/kanekou/.anyenv/envs/rbenv/versions/2.5.8

Downloading ruby-2.5.8.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.8.tar.bz2
Installing ruby-2.5.8...

WARNING: ruby-2.5.8 is past its end of life and is now unsupported.
It no longer receives bug fixes or critical security updates.

ruby-build: using readline from homebrew
Installed ruby-2.5.8 to /Users/kanekou/.anyenv/envs/rbenv/versions/2.5.8

% ruby --version
ruby 2.5.8p224 (2020-03-31 revision 67882) [x86_64-darwin20]