All, to be more specific (if needed) - I am running on OS X 10.10.5 Yosemite. Not only it was a challenge to build the library on OS X (had to remove some flags some invalid flag(s) to avoid obscure "atom not found in symbolIndex ..." linker error) ... But!!! No client connection to the FreeSWITCH is getting established - even if client program and FreeSWITCH are running on the same machine and "host" parameter to the ESLconnection is "localhost" (which seems to be working fine on all flavors of Linux). Will be more than happy to provide any additional information is needed. Any help/advise is greatly appreciated. Thanks Carlos