Using mkmf with Ruby ext Linking a Static Library with -L and -I and -l

Given a simple gcc command that follows as:

gcc quickrb.c -o main -L /usr/local/lib/quickjs -I /usr/local/lib/quickjs -l quickjs

I'm attempting to wrap this inside of a ruby gem extension extconf.rb using mkmf. Currently I've got:

require 'mkmf'

dir_config('quickjs', '/usr/local/lib/quickjs', '/usr/local/include/quickjs')

abort('missing "quickjs.h"') unless find_header('quickjs/quickjs.h')
abort('missing JS_NewRuntime') unless find_library('quickjs', 'JS_NewRuntime', 'quickjs/quickjs.h')
abort('missing JS_NewContext') unless find_library('quickjs', 'JS_NewContext', 'quickjs/quickjs.h')

create_makefile('quickrb/quickrb')

This fails with:

checking for quickjs/quickjs.h... yes
checking for JS_NewRuntime() in -lquickjs... no
missing JS_NewRuntime

I'm unsure how to processed. Without the find_library calls the Makefile generates, however it fails when compiling with:

dyld: Symbol not found: _JS_NewRuntime

Note:

Here is my sample quickrb.c file:

#include <quickjs/quickjs.h>

#include <ruby.h>

#include <stdio.h>
#include <strings.h>

void Init_quickrb()
{
  const char *filename = "runtime";
  const char *script = "3 + 4";
  const size_t length = strlen(script);

  JSRuntime *runtime = JS_NewRuntime();
  JSContext *context = JS_NewContext(runtime);

  JSValue value = JS_Eval(context, script, length, filename, JS_EVAL_TYPE_GLOBAL);

  const char *result = JS_ToCString(context, value);
  printf("%s = %s\n", script, result);
  JS_FreeCString(context, result);

  JS_FreeContext(context);
  JS_FreeRuntime(runtime);
}