I am using Embark version 2.1 .I have used the command 'embark ipfs' but it returns the following error.
/usr/local/bin/ipfs
/home/toshiba/.nvm/versions/node/v6.9.1/lib/node_modules/embark/node_modules/solc/soljson.js:1
(function (exports, require, module, __filename, __dirname) { var Module;if(!Module)Module=(typeof Module!=="undefined"?Module:null)||{};var moduleOverrides={};for(var key in Module){if(Module.hasOwnProperty(key)){moduleOverrides[key]=Module[key]}}var ENVIRONMENT_IS_WEB=typeof window==="object";var ENVIRONMENT_IS_WORKER=typeof importScripts==="function";var ENVIRONMENT_IS_NODE=typeof process==="object"&&typeof require==="function"&&!ENVIRONMENT_IS_WEB&&!ENVIRONMENT_IS_WORKER;var ENVIRONMENT_IS_SHELL=!ENVIRONMENT_IS_WEB&&!ENVIRONMENT_IS_NODE&&!ENVIRONMENT_IS_WORKER;if(ENVIRONMENT_IS_NODE){if(!Module["print"])Module["print"]=function print(x) {process["stdout"].write(x+"\n")};if(!Module["printErr"])Module["printErr"]=function printErr(x){process["stderr"].write(x+"\n")};var nodeFS=require("fs");var nodePath=require("path");Module["read"]=function read(filename,binary){filename=nodePath["normalize"](filename);var ret=
ReferenceError: build_dir is not defined
at IPFS.deploy (/home/toshiba/.nvm/versions/node/v6.9.1/lib/node_modules/embark/lib/ipfs.js:16:37)
at Object.ipfs (/home/toshiba/.nvm/versions/node/v6.9.1/lib/node_modules/embark/lib/index.js:265:10)
at Command.<anonymous> (/home/toshiba/.nvm/versions/node/v6.9.1/lib/node_modules/embark/lib/cmd.js:136:17)
at Command.listener (/home/toshiba/.nvm/versions/node/v6.9.1/lib/node_modules/embark/node_modules/commander/index.js:301:8)
at emitTwo (events.js:106:13)
at Command.emit (events.js:191:7)
at Command.parseArgs (/home/toshiba/.nvm/versions/node/v6.9.1/lib/node_modules/embark/node_modules/commander/index.js:615:12)
at Command.parse (/home/toshiba/.nvm/versions/node/v6.9.1/lib/node_modules/embark/node_modules/commander/index.js:458:21)
at Cmd.process (/home/toshiba/.nvm/versions/node/v6.9.1/lib/node_modules/embark/lib/cmd.js:19:11)
at Object.process (/home/toshiba/.nvm/versions/node/v6.9.1/lib/node_modules/embark/lib/index.js:31:9)
How can i solve this issue?