我在命令行中运行 brew doctor 时遇到了这个问题 - 有什么想法吗？
Jack:~ JackSymons$ brew doctor
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:
/opt/sm/pkg/active/bin/curl-config
/opt/sm/pkg/active/bin/ncurses5-config
/opt/sm/pkg/active/bin/ncursesw5-config
/opt/sm/pkg/active/bin/pkg-config
/opt/sm/pkg/active/bin/xml2-config
/opt/sm/pkg/active/bin/xslt-config
Warning: You have a non-Homebrew 'pkg-config' in your PATH:
/opt/sm/pkg/active/bin/pkg-config
`./configure` may have problems finding brew-installed packages using
this other pkg-config.
同样在运行 gem update --system 时，我得到以下信息：
Jack:~ JackSymons$ gem update --system
ERROR: While executing gem ... (Gem::Exception)
Unable to require openssl, install OpenSSL and rebuild ruby (preferred) or use non-HTTPS sources