I'm trying to build ODB on RHEL 5 32-bit and I get some linker errors. Here are some examples: odb-option-functions.o: In function `__exchange_and_add': /opt/rh/devtoolset-1.1/root/usr/lib/gcc/i386-CentOS-linux/4.7.2/../../../../include/c++/4.7.2/ext/atomicity.h:48: undefined reference to `__atomic_fetch_add_4' odb-profile.o: In function `__exchange_and_add': /opt/rh/devtoolset-1.1/root/usr/lib/gcc/i386-CentOS-linux/4.7.2/../../../../include/c++/4.7.2/ext/atomicity.h:48: undefined reference to `__atomic_fetch_add_4' semantics/relational/odb-name.o: In function `__exchange_and_add': /opt/rh/devtoolset-1.1/root/usr/lib/gcc/i386-CentOS-linux/4.7.2/../../../../include/c++/4.7.2/ext/atomicity.h:48: undefined reference to `__atomic_fetch_add_4' odb-options.o:/opt/rh/devtoolset-1.1/root/usr/lib/gcc/i386-CentOS-linux/4.7.2/../../../../include/c++/4.7.2/ext/atomicity.h:48: more undefined references to `__atomic_fetch_add_4' follow It builds fine on RHEL 5 64-bit. Any ideas what the issue might be? Thanks, Dave -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-devel/attachments/20140327/2411af0d/attachment-0006.html>