sample gruntfile with external make

gruntfile with 'make'

'use strict';

var exec = require('child_process').exec;

module.exports = function(grunt) {
  grunt.initConfig({
    jshint: {
      // define the files to lint
      files: ['gruntfile.js', 'main.js', 'src/**/*.js', 'test/**/*.js'],
      // configure JSHint (documented at http://www.jshint.com/docs/)
      options: {
        // more options here if you want to override JSHint defaults
        globalstrict:true,
        globals: {
          jQuery: true,
          console: true,
          module: true,
          require:true,
          describe:true,
          it:true
        }
      }
    },
    mochaTest: {
      test: {
        options: {
          reporter: 'spec'
        },
        src: ['test/**/*.js']
      }
    },
    watch: {
      js : {
        files: ['<%= jshint.files %>'],
        tasks: ['jshint','mochaTest']
      },
      c : {
        files: ['x.c'],
        tasks: ['make']
      }
    },
    make: {
      files:['x.c']
    }
  });
  grunt.loadNpmTasks('grunt-contrib-jshint');
  grunt.loadNpmTasks('grunt-contrib-watch');
  grunt.loadNpmTasks('grunt-mocha-test');

  grunt.registerTask('make','invoke external make',function() {
    var done = this.async();
    grunt.log.writeln('starting make');
    exec('make',function(error,stdout,stderr) {
      if (error !== null) {
        grunt.log.error(error);
      }
      else {
        grunt.log.writeln(stdout);
      }
      done();
    });
  });

// the default task can be run just by typing "grunt" on the command line
  grunt.registerTask('default', ['jshint','mochaTest','make','watch']);
};