`brew upgrade` 挂在 El Capitan 上

Question

我不能运行 brew upgrade 除非它无限期挂起。我正在使用 El Capitan OS。这是 input/output：

>>$ brew upgrade
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 2 taps (homebrew/core, homebrew/science).
==> Updated Formulae
artifactory         dovecot             node@4              scamper
chromedriver        node-build          openvpn
==> Deleted Formulae
pdksh

==> Upgrading 10 outdated packages, with result:
gcc 6.2.0, gdbm 1.12, libtiff 4.0.7, openssl 1.0.2j, pkg-config 0.29.1_2, python 2.7.12_2, homebrew/science/r 3.3.2, readline 7.0.1, sqlite 3.15.2, yara 3.5.0_1
==> Upgrading gcc
Warning: Building gcc from source:
  The bottle needs the Xcode CLT to be installed.
==> Using the sandbox
==> Downloading https://ftpmirror.gnu.org/gcc/gcc-6.2.0/gcc-6.2.0.tar.bz2
Already downloaded: /Users/r8t/Library/Caches/Homebrew/gcc-6.2.0.tar.bz2
==> Downloading https://raw.githubusercontent.com/Homebrew/formula-patches/e9e0e
Already downloaded: /Users/r8t/Library/Caches/Homebrew/gcc--patch-863957f90a934ee8f89707980473769cff47ca0663c3906992da6afb242fb220.patch
==> Patching
==> Applying 6.1.0-jit.patch
patching file gcc/jit/Make-lang.in
==> ../configure --build=x86_64-apple-darwin15.6.0 --prefix=/usr/local/Cellar/gc
==> make bootstrap

然后什么都没有。

Answer 1

ctrl + c退出挂起升级。
运行brew doctor。它促使我
运行 brew cleanup 清理错误的符号链接。那我
运行 brew doctor 又提示我
安装 xcode CLT 通过命令 sudo xcode-select --install。
终于brew update 成功了。

Answer 2

它可能正在下载大文件并且需要很长时间。尝试运行以下操作，以便您可以查看下载进度：

brew update --debug --verbose

Answer 3

添加到@travelingbones 的答案中，当您执行 brew upgrade 时，gcc 的安装会卡住。您可以通过运行此命令

进一步验证

验证问题

brew install gcc

取而代之的是，执行以下操作会加快进程，因为 brew 在 x-code 安装

之后安装 预编译 版本的 gcc

改为这样做

sudo xcode-select --install
brew install gcc

Answer 4

详细模式对我有用：

brew update --verbose

`brew upgrade` 挂在 El Capitan 上

`brew upgrade` hangs on El Capitan

homebrew

osx-elcapitan