Output of brew doctor

gistfile1.txt

Warning: You have no /usr/bin/cc.
This means you probably can't build *anything*. You need to install the Command
Line Tools for Xcode. You can either download this from http://connect.apple.com
or install them from inside Xcode's Download preferences. Homebrew does not
require all of Xcode! You only need the Command Line Tools package!
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/libmacfuse_i32.2.dylib    /usr/local/lib/libmacfuse_i64.2.dylib    /usr/local/lib/libntfs-3g.80.dylib    /usr/local/lib/libntfs.9.0.0.dylib    /usr/local/lib/libosxfuse_i32.2.dylib    /usr/local/lib/libosxfuse_i64.2.dylib    /usr/local/lib/libublio.1.dylib
Warning: Unbrewed .la files 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 .la files:
    /usr/local/lib/libntfs-3g.la    /usr/local/lib/libntfs.la    /usr/local/lib/libosxfuse_i32.la    /usr/local/lib/libosxfuse_i64.la    /usr/local/lib/libublio.la
Warning: Unbrewed .pc files were found in /usr/local/lib/pkgconfig.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected .pc files:
    /usr/local/lib/pkgconfig/libavcodec.pc    /usr/local/lib/pkgconfig/libavdevice.pc    /usr/local/lib/pkgconfig/libavformat.pc    /usr/local/lib/pkgconfig/libavutil.pc    /usr/local/lib/pkgconfig/libntfs-3g.pc    /usr/local/lib/pkgconfig/libswscale.pc    /usr/local/lib/pkgconfig/libublio.pc    /usr/local/lib/pkgconfig/osxfuse.pc
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/libavcodec.a    /usr/local/lib/libavdevice.a    /usr/local/lib/libavformat.a    /usr/local/lib/libavutil.a    /usr/local/lib/libntfs-3g.a    /usr/local/lib/libntfs.a    /usr/local/lib/libswscale.a    /usr/local/lib/libublio.a
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.

    ack
    cmake
    ctags
    dos2unix
    faac
    faad2
    figlet
    git
    glib
    imagemagick
    irssi
    jasper
    jpeg
    lame
    libogg
    libtiff
    libvorbis
    libvpx
    little-cms
    macvim
    md5sha1sum
    memcached
    most
    mplayer
    node
    oniguruma
    pcre
    pidof
    pkg-config
    redis
    s-lang
    scala
    theora
    wget
    x264
    xvid
    yasm
Warning: Some installed formula are missing dependencies.
You should `brew install` the missing dependencies:

    brew install xz libffi

Run `brew missing` for more details.
Warning: Some directories in your path end in a slash.
Directories in your path should not end in a slash. This can break other
doctor checks. The following directories should be edited:
    /usr/local/Cellar/memcached/1.4.5/bin/
Warning: Your compilers are different from the standard versions for your Xcode.
If you have Xcode 4.3 or newer, you should install the Command Line Tools for
Xcode from within Xcode's Download preferences.
Otherwise, you should reinstall Xcode.
Warning: /usr/bin occurs before /usr/local/bin
This means that system-provided programs will be used instead of those
provided by Homebrew. The following tools exist at both paths:

    memcached
    ruby

Consider amending your PATH so that /usr/local/bin
is ahead of /usr/bin in your PATH.
Warning: Homebrew's sbin was not found in your path.
Consider amending your PATH variable so it contains:
  /usr/local/sbin
Warning: Your Xcode is configured with an invalid path.
You should change it to the correct path. Please note that there is no correct
path at this time if you have *only* installed the Command Line Tools for Xcode.
If your Xcode is pre-4.3 or you installed the whole of Xcode 4.3 then one of
these is (probably) what you want:

    sudo xcode-select -switch /Developer
    sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer

DO NOT SET / OR EVERYTHING BREAKS!