title: Error when installing postgresql via homebrew
body: <p>I'm trying to install postgresql via homebrew on mac, then it automatically tried to install the krb5 but got error when running make jobs. </p>
  
  <pre><code>==&gt; Installing dependencies for postgresql: krb5 and readline
  ==&gt; Installing postgresql dependency: krb5
  ==&gt; Downloading https://kerberos.org/dist/krb5/1.18/krb5-1.18.1.tar.gz
  ######################################################################## 100.0%
  ==&gt; ./configure --prefix=/usr/local/Cellar/krb5/1.18.1 --without-system-verto
  ==&gt; make
  Last 15 lines from /Users/vicky/Library/Logs/Homebrew/krb5/02.make:
    "_Tcl_MainEx", referenced from:
        _main in test.o
  Undefined symbols for architecture x86_64:
    "_Tcl_MainEx", referenced from:
        _main in test.o
  ld: symbol(s) not found for architecture x86_64
  ld: symbol(s) not found for architecture x86_64
  clang: errorclang: error: linker command failed with exit code 1 (use -v to see invocation): 
  linker command failed with exit code 1 (use -v to see invocation)
  make[3]: *** [kadm5_srv_tcl] Error 1
  make[3]: *** Waiting for unfinished jobs....
  make[3]: *** [kadm5_clnt_tcl] Error 1
  make[2]: *** [all-recurse] Error 1
  make[1]: *** [all-recurse] Error 1
  make: *** [all-recurse] Error 1
  </code></pre>