[SmartcardServices-Users] Re-Compile SmartCardServices under MacOSLion

Dear all, I have recently switch myPKI PKCS15 to a PKCS1 .NET. To have it working on MacOS Lion, I start to download and recompile the SmartCardServices project as the pkg provided by the project doesn't contain the PKCS11 tokend and the PKCS11 .NET library. I also look at the Gemalto software, but this one support only Snow and Leopard. Unfortunately, I try both darwinbuild (like indicated in the web page of the project) and xcodebuild without success. The compilation end with an error as it doesn't found the security_utilities include. I google this item, but found nothing useful. Can you tell me what I miss ? Where can I found this lib ? Thanks for your help. Olivier