gistfile1.txt

// main.zig
const std = @import("std");
const warn = std.debug.warn;

const libcurl = @cImport(@cInclude("/usr/include/curl/curl.h"));

pub fn main() void {
    var curl: *libcurl.CURL = libcurl.curl_easy_init();
    var res: libcurl.CURLcode = undefined;
    var url = "https://example.com";

    _ = @intToEnum(libcurl.CURLoption, libcurl.CURLOPT_URL);
    libcurl.curl_easy_setopt(curl, libcurl.CURLOPT_URL, url);

    res = libcurl.curl_easy_perform(curl);
    libcurl.curl_easy_cleanup(curl);

    warn("Success!\n");
}

// make
[vagrant@test test]$ make
zig build-exe src/main.zig      \
        --name test             \
        --output-dir release/   \
        --library c             \
        --library curl          \
        --library-path /usr/lib \
        -isystem /usr/include
/vagrant/test/src/main.zig:21:43: error: expected type '.cimport:13:17.CURLoption', found 'comptime_int'
    libcurl.curl_easy_setopt(curl, libcurl.CURLOPT_URL, url);
                                          ^
zig-cache/o/qD0dy2Mk_lLtIbVxDXeeN6xAzbpvx6OT8J41zSUvSy68U0fd18f2z7LwukiO6e0I/cimport.zig:1329:24: note: .cimport:13:17.CURLoption declared here
pub const CURLoption = extern enum {
                       ^
/vagrant/eyez/src/main.zig:21:29: note: referenced here
    libcurl.curl_easy_setopt(curl, libcurl.CURLOPT_URL, url);
                            ^
make: *** [Makefile:4: all] Error 1