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module.exports = exports = configure
/**
* Module dependencies.
*/
var fs = require('graceful-fs')
, path = require('path')
, glob = require('glob')
, log = require('npmlog')
, osenv = require('osenv')
, which = require('which')
, semver = require('semver')
, mkdirp = require('mkdirp')
, cp = require('child_process')
, extend = require('util')._extend
, spawn = cp.spawn
, execFile = cp.execFile
, win = process.platform == 'win32'
exports.usage = 'Generates ' + (win ? 'MSVC project files' : 'a Makefile') + ' for the current module'
function configure (gyp, argv, callback) {
var python = gyp.opts.python || process.env.PYTHON || 'python'
, buildDir = path.resolve('build')
, configNames = [ 'config.gypi', 'common.gypi' ]
, configs = []
, nodeDir
checkPython()
// Check if Python is in the $PATH
function checkPython () {
log.verbose('check python', 'checking for Python executable "%s" in the PATH', python)
which(python, function (err, execPath) {
if (err) {
log.verbose('`which` failed', python, err)
if (win) {
guessPython()
} else {
failNoPython()
}
} else {
log.verbose('`which` succeeded', python, execPath)
checkPythonVersion()
}
})
}
// Called on Windows when "python" isn't available in the current $PATH.
// We're gonna check if "%SystemDrive%\python27\python.exe" exists.
function guessPython () {
log.verbose('could not find "' + python + '". guessing location')
var rootDir = process.env.SystemDrive || 'C:\\'
if (rootDir[rootDir.length - 1] !== '\\') {
rootDir += '\\'
}
var pythonPath = path.resolve(rootDir, 'Python27', 'python.exe')
log.verbose('ensuring that file exists:', pythonPath)
fs.stat(pythonPath, function (err, stat) {
if (err) {
if (err.code == 'ENOENT') {
failNoPython()
} else {
callback(err)
}
return
}
python = pythonPath
checkPythonVersion()
})
}
function checkPythonVersion () {
var env = extend({}, process.env);
env.TERM = 'dumb';
execFile(python, ['-c', 'import platform; print(platform.python_version());'], { env: env }, function (err, stdout) {
if (err) {
return callback(err)
}
log.verbose('check python version', '`%s -c "import platform; print(platform.python_version());"` returned: %j', python, stdout)
var version = stdout.trim()
if (~version.indexOf('+')) {
log.silly('stripping "+" sign(s) from version')
version = version.replace(/\+/g, '')
}
if (~version.indexOf('rc')) {
log.silly('stripping "rc" identifier from version')
version = version.replace(/rc(.*)$/ig, '')
}
var range = semver.Range('>=2.5.0 <3.0.0')
if (range.test(version)) {
getNodeDir()
} else {
failPythonVersion(version)
}
})
}
function failNoPython () {
callback(new Error('Can\'t find Python executable "' + python +
'", you can set the PYTHON env variable.'))
}
function failPythonVersion (badVersion) {
callback(new Error('Python executable "' + python +
'" is v' + badVersion + ', which is not supported by gyp.\n' +
'You can pass the --python switch to point to Python >= v2.5.0 & < 3.0.0.'))
}
function getNodeDir () {
// 'python' should be set by now
process.env.PYTHON = python
if (gyp.opts.nodedir) {
// --nodedir was specified. use that for the dev files
nodeDir = gyp.opts.nodedir.replace(/^~/, osenv.home())
log.verbose('get node dir', 'compiling against specified --nodedir dev files: %s', nodeDir)
createBuildDir()
} else {
// if no --nodedir specified, ensure node dependencies are installed
var version
var versionStr
if (gyp.opts.target) {
// if --target was given, then determine a target version to compile for
versionStr = gyp.opts.target
log.verbose('get node dir', 'compiling against --target node version: %s', versionStr)
} else {
// if no --target was specified then use the current host node version
versionStr = process.version
log.verbose('get node dir', 'no --target version specified, falling back to host node version: %s', versionStr)
}
// make sure we have a valid version
try {
version = semver.parse(versionStr)
} catch (e) {
return callback(e)
}
if (!version) {
return callback(new Error('Invalid version number: ' + versionStr))
}
// ensure that the target node version's dev files are installed
gyp.opts.ensure = true
gyp.commands.install([ versionStr ], function (err, version) {
if (err) return callback(err)
log.verbose('get node dir', 'target node version installed:', version)
nodeDir = path.resolve(gyp.devDir, version)
createBuildDir()
})
}
}
function createBuildDir () {
log.verbose('build dir', 'attempting to create "build" dir: %s', buildDir)
mkdirp(buildDir, function (err, isNew) {
if (err) return callback(err)
log.verbose('build dir', '"build" dir needed to be created?', isNew)
createConfigFile()
})
}
function createConfigFile (err) {
if (err) return callback(err)
var configFilename = 'config.gypi'
var configPath = path.resolve(buildDir, configFilename)
log.verbose('build/' + configFilename, 'creating config file')
var config = process.config || {}
, defaults = config.target_defaults
, variables = config.variables
// default "config.variables"
if (!variables) variables = config.variables = {}
// default "config.defaults"
if (!defaults) defaults = config.target_defaults = {}
// don't inherit the "defaults" from node's `process.config` object.
// doing so could cause problems in cases where the `node` executable was
// compiled on a different machine (with different lib/include paths) than
// the machine where the addon is being built to
defaults.cflags = []
defaults.defines = []
defaults.include_dirs = []
defaults.libraries = []
// set the default_configuration prop
if ('debug' in gyp.opts) {
defaults.default_configuration = gyp.opts.debug ? 'Debug' : 'Release'
}
if (!defaults.default_configuration) {
defaults.default_configuration = 'Release'
}
// set the target_arch variable
variables.target_arch = gyp.opts.arch || process.arch || 'ia32'
// set the node development directory
variables.nodedir = nodeDir
// don't copy dev libraries with nodedir option
variables.copy_dev_lib = !gyp.opts.nodedir
// disable -T "thin" static archives by default
variables.standalone_static_library = gyp.opts.thin ? 0 : 1
// loop through the rest of the opts and add the unknown ones as variables.
// this allows for module-specific configure flags like:
//
// $ node-gyp configure --shared-libxml2
Object.keys(gyp.opts).forEach(function (opt) {
if (opt === 'argv') return
if (opt in gyp.configDefs) return
variables[opt.replace(/-/g, '_')] = gyp.opts[opt]
})
// ensures that any boolean values from `process.config` get stringified
function boolsToString (k, v) {
if (typeof v === 'boolean')
return String(v)
return v
}
log.silly('build/' + configFilename, config)
// now write out the config.gypi file to the build/ dir
var prefix = '# Do not edit. File was generated by node-gyp\'s "configure" step'
, json = JSON.stringify(config, boolsToString, 2)
log.verbose('build/' + configFilename, 'writing out config file: %s', configPath)
configs.push(configPath)
fs.writeFile(configPath, [prefix, json, ''].join('\n'), findConfigs)
}
function findConfigs (err) {
if (err) return callback(err)
var name = configNames.shift()
if (!name) return runGyp()
var fullPath = path.resolve(name)
log.verbose(name, 'checking for gypi file: %s', fullPath)
fs.stat(fullPath, function (err, stat) {
if (err) {
if (err.code == 'ENOENT') {
findConfigs() // check next gypi filename
} else {
callback(err)
}
} else {
log.verbose(name, 'found gypi file')
configs.push(fullPath)
findConfigs()
}
})
}
function runGyp (err) {
if (err) return callback(err)
if (!~argv.indexOf('-f') && !~argv.indexOf('--format')) {
if (win) {
log.verbose('gyp', 'gyp format was not specified; forcing "msvs"')
// force the 'make' target for non-Windows
argv.push('-f', 'msvs')
} else {
log.verbose('gyp', 'gyp format was not specified; forcing "make"')
// force the 'make' target for non-Windows
argv.push('-f', 'make')
}
}
function hasMsvsVersion () {
return argv.some(function (arg) {
return arg.indexOf('msvs_version') === 0
})
}
if (win && !hasMsvsVersion()) {
if ('msvs_version' in gyp.opts) {
argv.push('-G', 'msvs_version=' + gyp.opts.msvs_version)
} else {
argv.push('-G', 'msvs_version=auto')
}
}
// include all the ".gypi" files that were found
configs.forEach(function (config) {
argv.push('-I', config)
})
// this logic ported from the old `gyp_addon` python file
var gyp_script = path.resolve(__dirname, '..', 'gyp', 'gyp_main.py')
var addon_gypi = path.resolve(__dirname, '..', 'addon.gypi')
var common_gypi = path.resolve(nodeDir, 'common.gypi')
var output_dir = 'build'
if (win) {
// Windows expects an absolute path
output_dir = buildDir
}
argv.push('-I', addon_gypi)
argv.push('-I', common_gypi)
argv.push('-Dlibrary=shared_library')
argv.push('-Dvisibility=default')
argv.push('-Dnode_root_dir=' + nodeDir)
argv.push('-Dmodule_root_dir=' + process.cwd())
argv.push('--depth=.')
argv.push('--no-parallel')
// tell gyp to write the Makefile/Solution files into output_dir
argv.push('--generator-output', output_dir)
// tell make to write its output into the same dir
argv.push('-Goutput_dir=.')
// enforce use of the "binding.gyp" file
argv.unshift('binding.gyp')
// execute `gyp` from the current target nodedir
argv.unshift(gyp_script)
// make sure python uses files that came with this particular node package
process.env.PYTHONPATH = path.resolve(__dirname, '..', 'gyp', 'pylib')
var cp = gyp.spawn(python, argv)
cp.on('exit', onCpExit)
}
/**
* Called when the `gyp` child process exits.
*/
function onCpExit (code, signal) {
if (code !== 0) {
callback(new Error('`gyp` failed with exit code: ' + code))
} else {
// we're done
callback()
}
}
}