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This PR implements the second part of #43, which adds a
ccall
function tovillian. The detail of
ccall
is described here: #43 (comment).I also added a wrapper for
libunistring
function and moved all char relatedfunctions as a library in
lib/char.rkt
. In this way, we don't need to linklibunistring
statically anymore. It also provides an example for the C API:unistring.c
The only problem now is the unit test. Because
ccall
is not a racketfunction, we need to let
raco test
ignore some of the files, but I'm not surehow to fix this problem.
I'm pretty sure the
ccall
function work as intended. As an experiement, Iadded a super simplified wrapper for SDL on
sdl
branch: