我在 macOS Big Sur 中查看了此Ruby 安装 (2.2.2) 失败
我的 macOS 是 Big Sur，我拥有的版本是 11.2，它是我能找到的最接近我的操作系统问题的版本，我尽我所能尝试
CFLAGS="-Wno-error=implicit-function-declaration" rbenv install 2.5.3
并且
RUBY_CFLAGS=-DUSE_FFI_CLOSURE_ALLOC rbenv install 2.5.3
这是我终端中的输出：
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 = { …