I installed Mac OSX 10.9 the day it came out. Afterwards I decided I needed to install PIL. I'd installed it before, but it appeared the update had broken that. When I try to use pip to install PIL, it fails when building _imaging. It appears the root cause is this.

/usr/include/sys/cdefs.h:655:2: error: Unsupported architecture

Theres also a similar error here:

/usr/include/machine/limits.h:8:2: error: architecture not supported

and here:

/usr/include/machine/_types.h:34:2: error: architecture not supported

Then there's a whole list of missing types.

/usr/include/sys/_types.h:94:9: error: unknown type name '__int64_t'
typedef __int64_t       __darwin_blkcnt_t;      /* total blocks */
        ^
/usr/include/sys/_types.h:95:9: error: unknown type name '__int32_t'
typedef __int32_t       __darwin_blksize_t;     /* preferred block size */
        ^
/usr/include/sys/_types.h:96:9: error: unknown type name '__int32_t'
typedef __int32_t       __darwin_dev_t;         /* dev_t */
        ^
/usr/include/sys/_types.h:99:9: error: unknown type name '__uint32_t'
typedef __uint32_t      __darwin_gid_t;         /* [???] process and group IDs */
        ^
/usr/include/sys/_types.h:100:9: error: unknown type name '__uint32_t'
typedef __uint32_t      __darwin_id_t;          /* [XSI] pid_t, uid_t, or gid_t*/
        ^
/usr/include/sys/_types.h:101:9: error: unknown type name '__uint64_t'
typedef __uint64_t      __darwin_ino64_t;       /* [???] Used for 64 bit inodes */

Needless to say I don't know where to go from here. I've got a couple of guesses, but I don't even know how to check.

• Wrong include probably as a result of a badly configured environment variable
• Problem with Xcode's installation/ missing command line tools
• Messed up header files

If anyone has any suggestions either to check one of those possibilities or for one of their own I'm all ears.