Closed
Description
I've tried to build a simple shared module using the exportFn in a comptime block. Using zig version v0.11.0-dev.1638+7199d7c77 it fails with the following error:
/home/galli/repos/git.sr.ht/~hubidubi/river-lua/zig/lib/ziglua/src/ziglua-5.4/lib.zig:2021:13: error: TODO implement exporting arbitrary Value objects
@export(declaration, .{ .name = "luaopen_" ++ name, .linkage = .Strong });Since there is a TODO, I'm assuming this will be fixed at some point. But git blame tells me this TODO has been there for over 2 years, so who knows when that will happen.
build.zig:
const std = @import("std");
const ziglua = @import("lib/ziglua/build.zig");
pub fn build(b: *std.Build) void {
// Standard release options allow the person running `zig build` to select
// between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
const target = b.standardTargetOptions(.{});
const optimize = b.standardOptimizeOption(.{});
const lib = b.addSharedLibrary(.{
.name = "test",
.root_source_file = .{ .path = "src/main.zig" },
.target = target,
.optimize = optimize,
});
lib.addModule("ziglua", ziglua.compileAndCreateModule(b, lib, .{ .shared = true }));
lib.install();
}main.zig:
const std = @import("std");
const ziglua = @import("ziglua");
usingnamespace ziglua;
fn hello(lua: *ziglua.Lua) i32 {
_ = lua;
std.debug.print("hello world\n", .{});
return 1;
}
fn module(lua: *ziglua.Lua) i32 {
var fns = [_]ziglua.FnReg{ .{ .name = "hello", .func = ziglua.wrap(hello) }, .{ .name = "", .func = null } };
lua.newLib(fns[0..]);
return 1;
}
comptime {
ziglua.exportFn("hello", module);
}My current fix is to do the exporting and wrapping by hand, but maybe I'm missing something:
export fn luaopen_module(L: *ziglua.LuaState) callconv(.C) c_int {
var fns = [_]ziglua.FnReg{ .{ .name = "hello", .func = ziglua.wrap(hello) }, .{ .name = "", .func = null } };
var lua = ziglua.Lua{ .state = L };
lua.newLib(fns[0..]);
return 1;
}