ruby-on-rails - `brew upgrade ` : " cannot be built with any available compilers"

Question

例如，我尝试运行 brew Upgrade ruby​​-build。

失败并出现错误:

CompilerSelectionError: ruby-build cannot be built with any available compilers.
Install GNU's GCC
  brew install gcc

当我运行 brew install gcc 时，我得到:

Warning: Building gcc from source:
  The bottle needs the Xcode CLT to be installed.
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
Error: An exception occurred within a child process:
  CompilerSelectionError: gcc cannot be built with any available compilers.
Install GNU's GCC
  brew install gcc

如何通过 brew 升级 ruby-build？

Answer 1

我运行了这个命令，它现在可以工作了:

xcode-select --install