Gentoo's Bugzilla –
Attachment 309261 Details for
Bug 412349app-antivirus/clamav-0.97.4 with gcc-4.7 - In constructor ‘{anonymous}::StatSymbols::StatSymbols()’: .../work/clamav-0.97.4/libclamav/c++/llvm/lib/ExecutionEngine/JIT/Intercept.cpp:69:67: error: ‘lseek64’ was not declared in this scope