OSX client does support local smart card redirection but not authentication using smart card. This is probably doable now on OSX platform.
OpenSC fixed in r27703, Makefile.thinlinc-client in r27704 and tlclient in r27705.
*** Bug 3749 has been marked as a duplicate of this bug. ***
Does not work:
2013-10-17T10:32:56: Log file created
2013-10-17T10:32:56: ThinLinc client release 4.1.0post build 4116
2013-10-17T10:32:57: Unable to load PKCS#11 modules '/Applications/ThinLinc Client.app/Contents/lib/tlclient/opensc-pkcs11.dylib'
2013-10-17T10:32:58: Log file ended
Improper testing on my part. It seems like Apple's strip has horrible defaults and produces unusable files if applied to dynamic libraries. Will have to look at how to handle this...
Some more debug logging added in r28051 and the stripping fixed in r28052.