Paul,
Not only does the Lexmark developer's kit use compiled libraries, but it
uses C++ code as well, which isn't accepted in Sane. You will also find
that the kit is only for older Linux kernels (2.4) and it doesn't
support all the scanner families - only X7170, and X5250 are supported.
I'm wondering if anyone in the linux community has made any efforts in the
Lexmark X75 driver.
I've found out that Lexmark does provide a developers kit but I've been told
it uses binary libraries which Sane cannot include.
http://www.lexmark.com/US/products/info/linux/download.html
I am new to