text: 
  module.exports = exports = build
  
  /**
   * Module dependencies.
   */
  
  var fs = require('graceful-fs')
    , rm = require('rimraf')
    , path = require('path')
    , glob = require('glob')
    , log = require('npmlog')
    , which = require('which')
    , mkdirp = require('mkdirp')
    , exec = require('child_process').exec
    , processRelease = require('./process-release')
    , win = process.platform == 'win32'
  
  exports.usage = 'Invokes `' + (win ? 'msbuild' : 'make') + '` and builds the module'
  
  function build (gyp, argv, callback) {
    var platformMake = 'make'
    if (process.platform === 'aix') {
      platformMake = 'gmake'
    } else if (process.platform.indexOf('bsd') !== -1) {
      platformMake = 'gmake'
    }
  
    var release = processRelease(argv, gyp, process.version, process.release)
      , makeCommand = gyp.opts.make || process.env.MAKE || platformMake
      , command = win ? 'msbuild' : makeCommand
      , buildDir = path.resolve('build')
      , configPath = path.resolve(buildDir, 'config.gypi')
      , jobs = gyp.opts.jobs || process.env.JOBS
      , buildType
      , config
      , arch
      , nodeDir
      , copyDevLib
  
    loadConfigGypi()
  
    /**
     * Load the "config.gypi" file that was generated during "configure".
     */
  
    function loadConfigGypi () {
      fs.readFile(configPath, 'utf8', function (err, data) {
        if (err) {
          if (err.code == 'ENOENT') {
            callback(new Error('You must run `node-gyp configure` first!'))
          } else {
            callback(err)
          }
          return
        }
        config = JSON.parse(data.replace(/\#.+\n/, ''))
  
        // get the 'arch', 'buildType', and 'nodeDir' vars from the config
        buildType = config.target_defaults.default_configuration
        arch = config.variables.target_arch
        nodeDir = config.variables.nodedir
        copyDevLib = config.variables.copy_dev_lib == 'true'
  
        if ('debug' in gyp.opts) {
          buildType = gyp.opts.debug ? 'Debug' : 'Release'
        }
        if (!buildType) {
          buildType = 'Release'
        }
  
        log.verbose('build type', buildType)
        log.verbose('architecture', arch)
        log.verbose('node dev dir', nodeDir)
  
        if (win) {
          findSolutionFile()
        } else {
          doWhich()
        }
      })
    }
  
    /**
     * On Windows, find the first build/*.sln file.
     */
  
    function findSolutionFile () {
      glob('build/*.sln', function (err, files) {
        if (err) return callback(err)
        if (files.length === 0) {
          return callback(new Error('Could not find *.sln file. Did you run "configure"?'))
        }
        guessedSolution = files[0]
        log.verbose('found first Solution file', guessedSolution)
        doWhich()
      })
    }
  
    /**
     * Uses node-which to locate the msbuild / make executable.
     */
  
    function doWhich () {
      // First make sure we have the build command in the PATH
      which(command, function (err, execPath) {
        if (err) {
          if (win && /not found/.test(err.message)) {
            // On windows and no 'msbuild' found. Let's guess where it is
            findMsbuild()
          } else {
            // Some other error or 'make' not found on Unix, report that to the user
            callback(err)
          }
          return
        }
        log.verbose('`which` succeeded for `' + command + '`', execPath)
        copyNodeLib()
      })
    }
  
    /**
     * Search for the location of "msbuild.exe" file on Windows.
     */
  
    function findMsbuild () {
      log.verbose('could not find "msbuild.exe" in PATH - finding location in registry')
      var notfoundErr = new Error('Can\'t find "msbuild.exe". Do you have Microsoft Visual Studio C++ 2008+ installed?')
      var cmd = 'reg query "HKLM\\Software\\Microsoft\\MSBuild\\ToolsVersions" /s'
      if (process.arch !== 'ia32')
        cmd += ' /reg:32'
      exec(cmd, function (err, stdout, stderr) {
        var reVers = /ToolsVersions\\([^\\]+)$/i
          , rePath = /\r\n[ \t]+MSBuildToolsPath[ \t]+REG_SZ[ \t]+([^\r]+)/i
          , msbuilds = []
          , r
          , msbuildPath
        if (err) {
          return callback(notfoundErr)
        }
        stdout.split('\r\n\r\n').forEach(function(l) {
          if (!l) return
          l = l.trim()
          if (r = reVers.exec(l.substring(0, l.indexOf('\r\n')))) {
            var ver = parseFloat(r[1], 10)
            if (ver >= 3.5) {
              if (r = rePath.exec(l)) {
                msbuilds.push({
                  version: ver,
                  path: r[1]
                })
              }
            }
          }
        })
        msbuilds.sort(function (x, y) {
          return (x.version < y.version ? -1 : 1)
        })
        ;(function verifyMsbuild () {
          if (!msbuilds.length) return callback(notfoundErr)
          msbuildPath = path.resolve(msbuilds.pop().path, 'msbuild.exe')
          fs.stat(msbuildPath, function (err, stat) {
            if (err) {
              if (err.code == 'ENOENT') {
                if (msbuilds.length) {
                  return verifyMsbuild()
                } else {
                  callback(notfoundErr)
                }
              } else {
                callback(err)
              }
              return
            }
            command = msbuildPath
            copyNodeLib()
          })
        })()
      })
    }
  
    /**
     * Copies the node.lib file for the current target architecture into the
     * current proper dev dir location.
     */
  
    function copyNodeLib () {
      if (!win || !copyDevLib) return doBuild()
  
      var buildDir = path.resolve(nodeDir, buildType)
        , archNodeLibPath = path.resolve(nodeDir, arch, release.name + '.lib')
        , buildNodeLibPath = path.resolve(buildDir, release.name + '.lib')
  
      mkdirp(buildDir, function (err, isNew) {
        if (err) return callback(err)
        log.verbose('"' + buildType + '" dir needed to be created?', isNew)
        var rs = fs.createReadStream(archNodeLibPath)
          , ws = fs.createWriteStream(buildNodeLibPath)
        log.verbose('copying "' + release.name + '.lib" for ' + arch, buildNodeLibPath)
        rs.pipe(ws)
        rs.on('error', callback)
        ws.on('error', callback)
        rs.on('end', doBuild)
      })
    }
  
    /**
     * Actually spawn the process and compile the module.
     */
  
    function doBuild () {
  
      // Enable Verbose build
      var verbose = log.levels[log.level] <= log.levels.verbose
      if (!win && verbose) {
        argv.push('V=1')
      }
      if (win && !verbose) {
        argv.push('/clp:Verbosity=minimal')
      }
  
      if (win) {
        // Turn off the Microsoft logo on Windows
        argv.push('/nologo')
      }
  
      // Specify the build type, Release by default
      if (win) {
        var p = arch === 'x64' ? 'x64' : 'Win32'
        argv.push('/p:Configuration=' + buildType + ';Platform=' + p)
        if (jobs) {
          var j = parseInt(jobs, 10)
          if (!isNaN(j) && j > 0) {
            argv.push('/m:' + j)
          } else if (jobs.toUpperCase() === 'MAX') {
            argv.push('/m:' + require('os').cpus().length)
          }
        }
      } else {
        argv.push('BUILDTYPE=' + buildType)
        // Invoke the Makefile in the 'build' dir.
        argv.push('-C')
        argv.push('build')
        if (jobs) {
          var j = parseInt(jobs, 10)
          if (!isNaN(j) && j > 0) {
            argv.push('--jobs')
            argv.push(j)
          } else if (jobs.toUpperCase() === 'MAX') {
            argv.push('--jobs')
            argv.push(require('os').cpus().length)
          }
        }
      }
  
      if (win) {
        // did the user specify their own .sln file?
        var hasSln = argv.some(function (arg) {
          return path.extname(arg) == '.sln'
        })
        if (!hasSln) {
          argv.unshift(gyp.opts.solution || guessedSolution)
        }
      }
  
      var proc = gyp.spawn(command, argv)
      proc.on('exit', onExit)
    }
  
    /**
     * Invoked after the make/msbuild command exits.
     */
  
    function onExit (code, signal) {
      if (code !== 0) {
        return callback(new Error('`' + command + '` failed with exit code: ' + code))
      }
      if (signal) {
        return callback(new Error('`' + command + '` got signal: ' + signal))
      }
      callback()
    }
  
  }
  