低于 2.3.1 的 Ruby 版本在clang --version
12 或更高版本时无法安装。要重现该问题,首先通过软件更新获取 xcode 命令行开发人员工具版本 12 或擦除您的 Mac 并安装自制软件:
# homebrew installs version 12 of the command line developer tools as well
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
然后这失败了:
brew install rbenv
rbenv install 2.2.5
rbenv install 2.2.5 的输出:
Downloading openssl-1.0.2u.tar.gz...
-> https://dqw8nmjcqpjn7.cloudfront.net/ecd0c6ffb493dd06707d38b14bb4d8c2288bb7033735606569d8f90f89669d16
Installing openssl-1.0.2u...
Installed openssl-1.0.2u to /Users/kburnett/.rbenv/versions/2.2.5
Downloading ruby-2.2.5.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/2.2/ruby-2.2.5.tar.bz2
Installing ruby-2.2.5...
WARNING: ruby-2.2.5 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
BUILD FAILED (Mac OS X 10.15.6 using ruby-build 20200819)
Inspect or clean up the working tree at /var/folders/my/qwq5ncb54svfh_qs70kjh4qc0000gn/T/ruby-build.20200921102602.41313.Eghhn7
Results logged to /var/folders/my/qwq5ncb54svfh_qs70kjh4qc0000gn/T/ruby-build.20200921102602.41313.log
Last 10 log lines:
compiling ../.././ext/psych/yaml/reader.c
compiling ../.././ext/psych/yaml/emitter.c
linking shared-object json/ext/generator.bundle
compiling ../.././ext/psych/yaml/parser.c
installing default psych libraries
linking shared-object bigdecimal.bundle
linking shared-object psych.bundle
linking shared-object nkf.bundle
linking shared-object date_core.bundle
make: *** [build-ext] Error 2
在显示“结果记录到”的文件中,它报告有 3 个警告和 4 个错误。错误是这些:
% grep "error:" /var/folders/my/qwq5ncb54svfh_qs70kjh4qc0000gn/T/ruby-build.20200921102602.41313.log
./openssl_missing.h:71:6: error: conflicting types for 'HMAC_CTX_copy'
./openssl_missing.h:95:5: error: conflicting types for 'EVP_CIPHER_CTX_copy'
./openssl_missing.h:173:5: error: conflicting types for 'BN_rand_range'
./openssl_missing.h:177:5: error: conflicting types for 'BN_pseudo_rand_range'
https://gist.github.com/burnettk/04fb637c4ec18f621b2df500dbcec00e上的问题要点。