我看了这个Ruby installation (2.2.2) fails in macOS Big Sur
我的macOS是Big Sur，我的版本是11.2，这是我能找到的最接近我的操作系统的问题，我遵循了我所能尝试的

CFLAGS="-Wno-error=implicit-function-declaration" rbenv install 2.5.3

并且还

RUBY_CFLAGS=-DUSE_FFI_CLOSURE_ALLOC rbenv install 2.5.3

这是我的终端的输出：

Downloading openssl-1.1.1i.tar.gz...
-> https://dqw8nmjcqpjn7.cloudfront.net/e8be6a35fe41d10603c3cc635e93289ed00bf34b79671a3a4de64fcee00d5242
Installing openssl-1.1.1i...
Installed openssl-1.1.1i to /Users/richard/.rbenv/versions/2.5.3

Downloading ruby-2.5.3.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.3.tar.bz2
Installing ruby-2.5.3...

WARNING: ruby-2.5.3 is nearing its end of life.
It only receives critical security updates, no bug fixes.

ruby-build: using readline from homebrew
/opt/homebrew/bin/ruby-build: line 1121: 31528 Killed: 9               "$RUBY_BIN" -e '
    manager = ARGV[0]
    packages = {
      "apt-get" => Hash.new {|h,k| "lib#{k}-dev" }.update(
        "openssl" => "libssl-dev",
        "zlib" => "zlib1g-dev"
      ),
      "yum" => Hash.new {|h,k| "#{k}-devel" }.update(
        "yaml" => "libyaml-devel"
      )
    }

    failed = %w[openssl readline zlib yaml].reject do |lib|
      begin
        require lib
      rescue LoadError
        $stderr.puts "The Ruby #{lib} extension was not compiled."
      end
    end

    if failed.size > 0
      $stderr.puts "ERROR: Ruby install aborted due to missing extensions"
      $stderr.print "Try running `%s install -y %s` to fetch missing dependencies.\n\n" % [
        manager,
        failed.map { |lib| packages.fetch(manager)[lib] }.join(" ")
      ] unless manager.empty?
      $stderr.puts "Configure options used:"
      require "rbconfig"; require "shellwords"
      RbConfig::CONFIG.fetch("configure_args").shellsplit.each { |arg| $stderr.puts "  #{arg}" }
      exit 1
    end
  ' "$(basename "$(type -p yum apt-get | head -1)")" 1>&4 2>&1

BUILD FAILED (macOS 11.2 using ruby-build 20210119)

Inspect or clean up the working tree at /var/folders/rn/c7nmr3x12gg5r8qwsr4ty8hh0000gn/T/ruby-build.20210209143521.94730.xfFT9O
Results logged to /var/folders/rn/c7nmr3x12gg5r8qwsr4ty8hh0000gn/T/ruby-build.20210209143521.94730.log

Last 10 log lines:
installing bundled gems:            /Users/richard/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0 (build_info, cache, doc, extensions, gems, specifications)
                                    power_assert 1.1.1
                                    net-telnet 0.1.1
                                    did_you_mean 1.2.0
                                    xmlrpc 0.3.0
                                    rake 12.3.0
                                    minitest 5.10.3
                                    test-unit 3.2.7
installing rdoc:                    /Users/richard/.rbenv/versions/2.5.3/share/ri/2.5.0/system
installing capi-docs:               /Users/richard/.rbenv/versions/2.5.3/share/doc/ruby

我在上面提到的两个命令中都得到了这个错误，并且都给予了相同的输出。Ruby的版本似乎也不重要，我也尝试了3.0.0，得到了相同的结果。
另外，这是我尝试使用rbenv install安装ruby时的原始输出

Downloading openssl-1.1.1i.tar.gz...
-> https://dqw8nmjcqpjn7.cloudfront.net/e8be6a35fe41d10603c3cc635e93289ed00bf34b79671a3a4de64fcee00d5242
Installing openssl-1.1.1i...
Installed openssl-1.1.1i to /Users/richard/.rbenv/versions/2.5.3
Downloading ruby-2.5.3.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.3.tar.bz2
Installing ruby-2.5.3...
WARNING: ruby-2.5.3 is nearing its end of life.
It only receives critical security updates, no bug fixes.
ruby-build: using readline from homebrew
BUILD FAILED (macOS 11.2 using ruby-build 20210119)
Inspect or clean up the working tree at /var/folders/rn/c7nmr3x12gg5r8qwsr4ty8hh0000gn/T/ruby-build.20210209143107.60561.YqaRpk
Results logged to /var/folders/rn/c7nmr3x12gg5r8qwsr4ty8hh0000gn/T/ruby-build.20210209143107.60561.log
Last 10 log lines:
compiling ../.././ext/psych/yaml/reader.c
compiling ../.././ext/psych/yaml/emitter.c
compiling ../.././ext/psych/yaml/parser.c
linking shared-object json/ext/generator.bundle
5 warnings generated.
linking shared-object date_core.bundle
linking shared-object zlib.bundle
1 warning generated.
linking shared-object psych.bundle
make: *** [build-ext] Error 2

xcode-select版本是2384。
Homebrew版本是3.0.0，brew doctor说我准备好了。
我的.zshrc文件也包含这行eval "$(rbenv init -)"
在这一点上，我不知道还能去哪里，🤷如果有任何细节，你想在日志文件中看到，让我知道从哪里，日志文件太大，无法在这里分享。为什么会发生这种情况，我如何解决这个问题？🤦‍♂️