One thing I have always hated about languages that tout easy C interop is the fact that you have to declare the C function first. A lot of C libraries e.g. Guil

One thing I have always hated about languages that tout easy C interop is the fact that you have to declare the C function first. A lot of C libraries e.g. Guile uses all sorts of Makefile hacks that makes it impossible, not to mention extremely time consuming to write a function declaration. Things would be so much easier if languages can implement something like Julia's ccall or a similar mechanism to allow direct calling of C libraries without any for of headers or wrapping.