Git 不在 Mac 上 Homebrew 的 PATH 中

Question

几天前，我跑了brew update，试图在我的 Mac 上更新自制软件（我使用 OSX 10.9.5）。当我运行这个时，我得到了这个

dyld: Library not loaded: /usr/local/opt/pcre2/lib/libpcre2-8.0.dylib
  Referenced from: /usr/local/opt/git/bin/git
  Reason: image not found
/usr/local/Homebrew/Library/Homebrew/brew.sh: line 193: 25509 Trace/BPT trap: 5       "$HOMEBREW_PREFIX/opt/git/bin/git" --version > /dev/null
dyld: Library not loaded: /usr/local/opt/pcre2/lib/libpcre2-8.0.dylib
  Referenced from: /usr/local/opt/git/bin/git
  Reason: image not found
/usr/local/Homebrew/Library/Homebrew/brew.sh: line 193: 25615 Trace/BPT trap: 5       "$HOMEBREW_PREFIX/opt/git/bin/git" --version > /dev/null
Warning: curl 7.63.0 is already installed, it's just not linked
You can use `brew link curl` to link this version.
dyld: Library not loaded: /usr/local/opt/pcre2/lib/libpcre2-8.0.dylib
  Referenced from: /usr/local/opt/git/bin/git
  Reason: image not found
/usr/local/Homebrew/Library/Homebrew/brew.sh: line 193: 25750 Trace/BPT trap: 5       "$HOMEBREW_PREFIX/opt/git/bin/git" --version > /dev/null
Warning: git 2.20.1 is already installed and up-to-date
To reinstall 2.20.1, run `brew reinstall git`
Error: Git must be installed and in your PATH!

我还跑了 brew doctor ，看看有没有什么变化。这就是出现的情况。

dyld: Library not loaded: /usr/local/opt/pcre2/lib/libpcre2-8.0.dylib
  Referenced from: /usr/local/opt/git/bin/git
  Reason: image not found
/usr/local/Homebrew/Library/Homebrew/brew.sh: line 193: 25891 Trace/BPT trap: 5       "$HOMEBREW_PREFIX/opt/git/bin/git" --version > /dev/null
Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry or file an issue; just ignore this. Thanks!

Warning: "config" scripts exist outside your system or Homebrew directories.
`./configure` scripts often look for *-config scripts to determine if
software packages are installed, and what additional flags to use when
compiling and linking.

Having additional scripts in your path can confuse software installed via
Homebrew if the config script overrides a system or Homebrew provided
script of the same name. We found the following "config" scripts:
  /Users/Robby/anaconda2/bin/curl-config
  /Users/Robby/anaconda2/bin/freetype-config
  /Users/Robby/anaconda2/bin/icu-config
  /Users/Robby/anaconda2/bin/krb5-config
  /Users/Robby/anaconda2/bin/libpng-config
  /Users/Robby/anaconda2/bin/libpng16-config
  /Users/Robby/anaconda2/bin/ncursesw6-config
  /Users/Robby/anaconda2/bin/pcre-config
  /Users/Robby/anaconda2/bin/python-config
  /Users/Robby/anaconda2/bin/python2-config
  /Users/Robby/anaconda2/bin/python2.7-config
  /Users/Robby/anaconda2/bin/xml2-config
  /Users/Robby/anaconda2/bin/xslt-config

Warning: Git could not be found in your PATH.
Homebrew uses Git for several internal functions, and some formulae use Git
checkouts instead of stable tarballs. You may want to install Git:
  brew install git

Warning: You have unlinked kegs in your Cellar
Leaving kegs unlinked can lead to build-trouble and cause brews that depend on
those kegs to fail to run properly once built. Run `brew link` on these:
  autoconf
  automake
  bash-completion
  brotli
  c-ares
  cask
  cmake
  cunit
  docbook
  docbook-xsl
  doxygen
  emacs
  fontconfig
  freetype
  gdbm
  geoip
  gmp
  gnutls
  htop
  itstool
  jansson
  jemalloc
  jpeg
  libev
  libevent
  libpng
  libtasn1
  libtool
  libunistring
  nettle
  nmap
  p11-kit
  pcre2
  pkg-config
  python@2
  watch

Warning: You are using macOS 10.9.
We (and Apple) do not provide support for this old version.
You may encounter build failures and other breakages.
Please create pull requests instead of asking for help on
Homebrew's GitHub, Discourse, Twitter or IRC. You are
responsible for resolving any issues you experience, as
you are running this old version.


Warning: Some installed formulae are missing dependencies.
You should `brew install` the missing dependencies:
  brew install python

Run `brew missing` for more details.

这是我跑的时候出现的brew missing。

dyld: Library not loaded: /usr/local/opt/pcre2/lib/libpcre2-8.0.dylib
  Referenced from: /usr/local/opt/git/bin/git
  Reason: image not found
/usr/local/Homebrew/Library/Homebrew/brew.sh: line 193: 26131 Trace/BPT trap: 5       "$HOMEBREW_PREFIX/opt/git/bin/git" --version > /dev/null
itstool: python
libxml2: python

有任何想法吗？我难住了。

Answer 1

我在尝试安装 android-platforms-tools 时遇到了类似的问题，并尝试重新安装 pcre2 lib，这对我有用。

brew uninstall --force pcre2

其次是

brew install pcre2

Answer 2

您是否尝试过以下操作（按照brew输出文本中的建议）：

brew reinstall git

或者：

brew reinstall git && brew unlink git && brew link git

或者：

brew upgrade git