Could Berkley DB be used on uc/os-II,and how to do that?

Question

I want to use Berkley DB on uc/os-II, but as far as I konw,it could be used in UNIX,WINDOWS,VxWork,and so on.

Answer 1

We currently know of no users of Berkeley DB on this platform. However,
Berkeley DB is delivered as source code and platform build tools, not as
binaries. A supported platform is quite different from that of a binary
distribution, pre-compiled and configured.
Berkeley DB has been around for over a decade now and over that time it
has been ported to nearly every platform (chipset, OS, compiler, etc)
available. The source code itself is very clean, even able to compile
with older non ANSI C compliant compilers. The code itself is written to
K&R standards and avoids features that could lead to compiler lock-in.
Berkeley DB uses very little of the underlying operating environment.
Within Berkeley DB there is a small set of operating system specific
function calls written to be predictable across platforms (like a
hardware abstraction layer, but in this case an operating system
abstraction layer). This code requires around a dozen basic POSIX calls,
things that relate to file open/close/sync/etc and a few other commonly
found routines. It is with this tiny set of calls that DB is based and
ultimately delivers its value to the application using it.
The build tools are based on GNU Autoconf and help to smooth out the
variety of compiler/linker/etc differences and subtleties as well as all
the variety of platform specific flags and include files. Using this
toolset we've been able to compile, and cross compile, DB to the vast
majority of platforms. For some platforms we've created additional build
related tools. Windows, BREW, VxWorks, etc have their own build
directories with platform specific requirements although we try to keep
these special cases to a minimum.
Once compiled there is a very large test suite delivered with every
download of Berkeley DB that the customer can use to validate proper
operation of DB for their particular build. This test suite is written
in TCL, which some vendors (or platforms) cannot install/use to run
these tests. Recognizing this limitation and the requirement to test and
validate DB on these edge case platforms tools will be provided as of a
future release written in C to exercise and validate a Berkeley DB build.
The tools will test: 1) the OS layer routines, 2) the Berkeley DB mutex
implementation for the particular platform, and 3) a number (but not
complete set) of the Berkeley DB routines.
The Berkeley DB team is committed to maintaining and extending its
portability. If you have questions during this process post questions
here on the forums.