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v/examples/dynamic_library_loading/use.v

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module main
// Note: This program, requires that the shared library was already compiled.
// To do so, run `v -d no_backtrace -o library -shared modules/library/library.v`
// before running this program.
import os
import dl
type FNAdder = fn (int, int) int
fn main() {
library_file_path := os.join_path(os.dir(@FILE), dl.get_libname('library'))
handle := dl.open_opt(library_file_path, dl.rtld_lazy)?
eprintln('handle: ${ptr_str(handle)}')
f := FNAdder(dl.sym_opt(handle, 'add_1')?)
eprintln('f: ${ptr_str(f)}')
res := f(1, 2)
eprintln('res: $res')
}