exit status 0xc0000135

[Will]

I managed to install libzmq using https://github.com/zeromq/czmq#windows
I set my env var as

set CGO_CFLAGS=-IC:/dev/vcpkg/installed/x64-windows/include
set CGO_LDFLAGS=-LC:/dev/vcpkg/installed/x64-windows/lib -l:libzmq-mt-4_3_4.lib

yet I get exit status 0xc0000135 when I run a simple zmq test

package main

import (
	"fmt"

	zmq4 "github.com/pebbe/zmq4"
)

func startServer(port int) *zmq4.Socket {
	//  Socket to talk to clients
	responder, _ := zmq4.NewSocket(zmq4.Type(zmq4.REP))
	url := fmt.Sprintf("tcp://*:%v", port)
	responder.Bind(url)

	return responder
}

func ZmqServer(port int) {
	responder := startServer(port)
	defer responder.Close()
	kill := true
	for kill {
		//  Wait for next request from client
		recv, _ := responder.Recv(0)

		switch {
		case recv == "1":
			responder.Send("1", 0)
		case recv == "kill":
			kill = false
			break

		}
	}
}

func main() {
	ZmqServer(233)
}

[Will]

Ok, after a day of pulling my hair.
All I need to do is add C:\dev\vcpkg\installed\x64-windows\bin to my PATH in windows' env. variables. and now after rebooting vscode, it finds the dll.

[Peter Kleiweg]

I don't understand. (I don't know windows.) Isn't PATH for executables, not for libraries? It looks like an issue with the configuration of vscode. Can you provide a full working configuration for vscode?

[Will]

I believe PATH is used to allow access to executables but also dll. in the case of libzmq, the CGO_LDFLEG is used to indicate the path to the libzmq.lib file, but trying to run it, as indicated, yields the 0xc0000135 which according to a google search means STATUS_DLL_NOT_FOUND. This is because, by default, vcpkg does not include the \bin path in the env. var PATH. Hence, adding this makes everything work.

[XavierXia]

yes, the dll(zeromq.dll) must be included in windows env, it will work!