Try to locate a usable SDK without specifying one in the script.

[martinpaljak]

Also remove universal binary support (gone since October 2013, OSX 10.9)

Most software targets 10.9+ anyway.

[LudovicRousseau]

If libusb-1.0.a is not a universal binary (that should be the case on your Mac) then no SDK is used.

A specific SDK is used only if libusb-1.0.a is a universal binary (so with i386 and x86_64 binaries) and then using the 10.8 SDK in that case makes sens.
I agree I have not build the CCID driver for 10.8 (or less) since a long time :-)

Do you have a use case in which the current code is problematic?
Or is it just core cleanup with no real need?

[martinpaljak]

Correct. I've been using old build snippets without any longer remembering what was where and why. I was under the impression of a necessary -isysroot but actually not.

Please ignore :)

(I suggest to remove things for releases that are more than 3+ majors old, just for regular housekeeping purposes)