OpenSUSE 12.1 x86_64 build error

Trying to build package in OpenSUSE 12.1 (OBS) x86_64:

/usr/lib64/gcc/x86_64-suse-linux/4.6/../../../../x86_64-suse-linux/bin/ld: equalizer.o: undefined reference to symbol 'sinh@@GLIBC_2.2.5'
/usr/lib64/gcc/x86_64-suse-linux/4.6/../../../../x86_64-suse-linux/bin/ld: note: 'sinh@@GLIBC_2.2.5' is defined in DSO /lib64/ so try adding it to the linker command line
/lib64/ could not read symbols: Invalid operation
collect2: ld returned 1 exit status

Build on i586 is OK. WTF? ))

Fixed by SVN r2370.