=> pip install pil
Downloading/unpacking pil
  You are installing a potentially insecure and unverifiable file. Future versions of pip will default to disallowing insecure files.
  Downloading PIL-1.1.7.tar.gz (506kB): 506kB downloaded
  Running setup.py egg_info for package pil
    WARNING: '' not a valid package name; please use only.-separated package names in setup.py

Installing collected packages: pil
  Running setup.py install for pil
    WARNING: '' not a valid package name; please use only.-separated package names in setup.py
    --- using frameworks at /System/Library/Frameworks
    building '_imaging' extension
    cc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -mno-fused-madd -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -arch i386 -pipe -DHAVE_LIBZ -I/System/Library/Frameworks/Tcl.framework/Headers -I/System/Library/Frameworks/Tk.framework/Headers -IlibImaging -I/System/Library/Frameworks/Python.framework/Versions/2.7/include -I/usr/local/include -I/usr/include -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c _imaging.c -o build/temp.macosx-10.9-intel-2.7/_imaging.o
    clang: warning: argument unused during compilation: '-mno-fused-madd'
    _imaging.c:379:9: warning: implicit conversion loses integer precision: 'Py_ssize_t' (aka 'long') to 'int' [-Wshorten-64-to-32]
        n = PyObject_Length(arg);
          ~ ^~~~~~~~~~~~~~~~~~~~
    /System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7/abstract.h:434:25: note: expanded from macro 'PyObject_Length'
    #define PyObject_Length PyObject_Size
                            ^
    _imaging.c:394:28: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
                    int temp = PyInt_AsLong(op);
                        ~~~~   ^~~~~~~~~~~~~~~~
    _imaging.c:400:28: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
                    int temp = PyInt_AsLong(op);
                        ~~~~   ^~~~~~~~~~~~~~~~
    _imaging.c:410:28: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
                    int temp = PyInt_AsLong(op);
                        ~~~~   ^~~~~~~~~~~~~~~~
    _imaging.c:416:28: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
                    int temp = PyInt_AsLong(op);
                        ~~~~   ^~~~~~~~~~~~~~~~
    _imaging.c:523:17: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
                r = PyInt_AsLong(color);
                  ~ ^~~~~~~~~~~~~~~~~~~
    _imaging.c:531:21: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
                    r = PyInt_AS_LONG(color);
                      ~ ^~~~~~~~~~~~~~~~~~~~
    /System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7/intobject.h:52:51: note: expanded from macro 'PyInt_AS_LONG'
    #define PyInt_AS_LONG(op) (((PyIntObject *)(op))->ob_ival)
                               ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
    _imaging.c:555:13: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
            r = PyInt_AsLong(color);
              ~ ^~~~~~~~~~~~~~~~~~~
    _imaging.c:569:17: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
                r = PyInt_AsLong(color);
                  ~ ^~~~~~~~~~~~~~~~~~~
    _imaging.c:923:14: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
            *x = PyInt_AS_LONG(value);
               ~ ^~~~~~~~~~~~~~~~~~~~
    /System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7/intobject.h:52:51: note: expanded from macro 'PyInt_AS_LONG'
    #define PyInt_AS_LONG(op) (((PyIntObject *)(op))->ob_ival)
                               ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
    _imaging.c:931:14: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
            *y = PyInt_AS_LONG(value);
               ~ ^~~~~~~~~~~~~~~~~~~~
    /System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7/intobject.h:52:51: note: expanded from macro 'PyInt_AS_LONG'
    #define PyInt_AS_LONG(op) (((PyIntObject *)(op))->ob_ival)
                               ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
    _imaging.c:1221:9: warning: implicit conversion loses integer precision: 'Py_ssize_t' (aka 'long') to 'int' [-Wshorten-64-to-32]
        n = PyObject_Length(data);
          ~ ^~~~~~~~~~~~~~~~~~~~~
    /System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7/abstract.h:434:25: note: expanded from macro 'PyObject_Length'
    #define PyObject_Length PyObject_Size
                            ^
    _imaging.c:3009:15: warning: implicit conversion loses integer precision: 'long' to 'int' [-Wshorten-64-to-32]
            y = i / im->xsize;
              ~ ~~^~~~~~~~~~~
    _imaging.c:3017:5: warning: incompatible pointer types initializing 'lenfunc' (aka 'Py_ssize_t (*)(PyObject *)') with an expression of type 'inquiry' (aka 'int (*)(PyObject *)') [-Wincompatible-pointer-types]
        (inquiry) image_length, /*sq_length*/
        ^~~~~~~~~~~~~~~~~~~~~~
    _imaging.c:3077:5: warning: incompatible pointer types initializing 'lenfunc' (aka 'Py_ssize_t (*)(PyObject *)') with an expression of type 'inquiry' (aka 'int (*)(PyObject *)') [-Wincompatible-pointer-types]
        (inquiry) NULL, /*mp_length*/
        ^~~~~~~~~~~~~~
    15 warnings generated.
    _imaging.c:3017:5: warning: incompatible pointer types initializing 'lenfunc' (aka 'Py_ssize_t (*)(PyObject *)') with an expression of type 'inquiry' (aka 'int (*)(PyObject *)') [-Wincompatible-pointer-types]
        (inquiry) image_length, /*sq_length*/
        ^~~~~~~~~~~~~~~~~~~~~~
    _imaging.c:3077:5: warning: incompatible pointer types initializing 'lenfunc' (aka 'Py_ssize_t (*)(PyObject *)') with an expression of type 'inquiry' (aka 'int (*)(PyObject *)') [-Wincompatible-pointer-types]
        (inquiry) NULL, /*mp_length*/
        ^~~~~~~~~~~~~~
    2 warnings generated.