Created attachment 84270 [details]
Patch

With the current implementation SDK for OS X 10.7, 10.8, and 10.9 are considered:

(1) With Xcode 6 SDK for OS X 10.9 and 10.10 are available only. SDK for OS X 10.7 or 10.8 have to be downloaded separately.

(2) Building with 10.9 SDK is not possible. This is caused by a bug within the SDK concering the python headers. This bug has been corrected by Apple with 10.10 SDK.

(3) Using 10.10 SDK isn't possible, because with the current implementation of configure.in only a single digit 7, 8, or 9 is considered.

Please find a patch attached, which causes the following behaviour:

(1) Checking a single digt 7, 8, or 9 has been replaced by checking a string 10.7, 10.8, 10.9, or 10.10.

(2) Choosing the oldest SDK has been replaced by choosing the newest SDK. With Xcode 6 the result is SDK 10.10 without python header problems.