Hi Steven, thanks for that fast help. > undefined reference to `__stack_chk_guard' Mmh google points me to that code example , that looks like thy symbol should be defined in stdio.h - strange Futher searching around I also found the svn of freebsd port for ocsync and their patches . I added the patches for ENODATA and src-std-c_string.c already. The CMakeLists.txt patches is not included till now. sandro  http://lists.freebsd.org/pipermail/freebsd-bugs/2007-December/027475.html  http://svnweb.freebsd.org/ports/head/net/owncloud-csync/files/
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