安装houmebrew 后 执行brew doctor 报一下警告，有什么问题吗
Warning: Unbrewed dylibs were found in /usr/local/lib.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.
Unexpected dylibs:
/usr/local/lib/libecomlodr.dylib
/usr/local/lib/libsymsea.1.1.0.dylib
Warning: Unbrewed static libraries were found in /usr/local/lib.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.
Unexpected static libraries:
/usr/local/lib/libappfirewall.a
/usr/local/lib/libautoblock.a
/usr/local/lib/libautosetup.a
/usr/local/lib/libconnectionsclient.a
/usr/local/lib/liblocationawareness.a
/usr/local/lib/libpersonalfirewall.a
/usr/local/lib/libtrustedcomponents.a/usr/local/lib/ 是brew安装依赖库的存储目录，默认情况下Mac os x是没有这个目录的。
brew在下载了新的安装包之后，存放在/usr/local/Cellar/下面，然后在/usr/local/lib创建软链接。
你这里的问题就是因为已经存在了/usr/local/lib目录，并且里面的文件与将来brew存放的有冲突，他会覆盖你之前存放在里面的静态链接文件。可能会导致问题，先提前跟你Warning一下。
然后看了Unexpected static libraries之后，个人建议是。。。完全不用去理会。