gem安装rails“错误：执行gem时...（Gem::FilePermissionError）...”

Question

获取 Ruby on Rails 的本地环境设置。

所以我在 .rbenv 文件中安装了 Rails，当我输入

which rails

时，就确认了。

where rails

显示

/Users/<username>/.rbenv/shims

文件夹，其中 Rails 多次，例如目前 15 次，然后是

usr/bin/rails

的一个条目。

但是，如果你运行

rails --version

，你会得到这个：

Rails is not currently installed on this system. To get the latest version, simply type:

    $ sudo gem install rails

You can then rerun your "rails" command.

如果你运行

gem install rails

，你会得到这个：

ERROR:  While executing gem ... (Gem::FilePermissionError)
    You don't have write permissions for the /Library/Ruby/Gems/2.6.0 directory.

但是，如果您返回并再次运行

where rails

，您将获得

/Users/<username>/.rbenv/shims

目录的更多条目，表明它每次都在递增。

尝试根据在线指导添加环境变量我的〜/.zshrc，如下所示：

export GEM_HOME="$HOME/.gem"

当我保存并获取它时，我收到一个不同的错误：

Building native extensions. This could take a while...
ERROR:  Error installing rails:
        ERROR: Failed to build gem native extension.

    current directory: /Users/<username>/.gem/gems/racc-1.7.3/ext/racc/cparse
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0 -r ./siteconf20240118-44186-1bplyzo.rb extconf.rb
creating Makefile

current directory: /Users/<username>/.gem/gems/racc-1.7.3/ext/racc/cparse
make "DESTDIR=" clean

current directory: /Users/<username>/.gem/gems/racc-1.7.3/ext/racc/cparse
make "DESTDIR="
make: *** No rule to make target `/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/universal-darwin22/ruby/config.h', needed by `cparse.o'.  Stop.

make failed, exit code 2

Gem files will remain installed in /Users/<username>/.gem/gems/racc-1.7.3 for inspection.
Results logged to /Users/addie/.gem/extensions/universal-darwin-22/2.6.0/racc-1.7.3/gem_make.out

有人知道如何解决这个问题吗？

Answer 1

尝试 sudo gem install Rails 并添加密码，我在尝试 gem install cocoapods 时遇到了这个问题