> /home/User/sane-backends/frontend/scanimage.c:291: undefined reference to `_md5_buffer'
There should be two leading underscores before md5_buffer. This is resolved in the frontend/Makefile by "$(LIBLIB)" which links lib/liblib.a Header is include/md5.h Perhaps the compiler/linker being used has a problem with two leading underscores? Or not using the frontend/Makefile? Regards, Gerald