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module.exports = exports = configure
/**
* Module dependencies.
*/
var fs = require('graceful-fs')
, path = require('path')
, glob = require('glob')
, which = require('which')
, semver = require('semver')
, mkdirp = require('./util/mkdirp')
, win = process.platform == 'win32'
exports.usage = 'Generates ' + (win ? 'MSVC project files' : 'a Makefile') + ' for the current module'
function configure (gyp, argv, callback) {
var python = process.env.PYTHON || gyp.opts.python || 'python'
, buildDir = path.resolve('build')
, configPath
, versionStr
, version
checkPython()
// Make sure that Python is in the $PATH
function checkPython () {
which(python, function (err, execPath) {
if (err) {
if (win) {
guessPython()
} else {
failNoPython()
}
return
}
gyp.verbose('`which` succeeded for `' + python + '`', execPath)
getTargetVersion()
})
}
// Called on Windows when "python" isn't available in the current $PATH.
// We're gonna glob C:\python2*
function guessPython () {
gyp.verbose('could not find "' + python + '". guessing location')
var rootDir = process.env.HOMEDRIVE || process.env.SystemDrive || 'C:\\'
if (rootDir[rootDir.length - 1] !== '\\') {
rootDir += '\\'
}
var pythonPath = path.resolve(rootDir, 'Python27', 'python.exe')
gyp.verbose('ensuring that file exists:', pythonPath)
fs.stat(pythonPath, function (err, stat) {
if (err) {
if (err.code == 'ENOENT') {
failNoPython()
} else {
callbackk(err)
}
return
}
python = pythonPath
getTargetVersion()
})
}
function failNoPython () {
callback(new Error('Can\'t find Python, you can set the PYTHON env variable.'))
}
function getTargetVersion () {
// 'python' should be set by now
process.env.PYTHON = python
if (gyp.opts.target) {
// if --target was given, then ensure that version is installed
versionStr = gyp.opts.target
gyp.verbose('compiling against --target node version', versionStr)
} else {
// if no --target was specified then use the current host node version
versionStr = process.version
gyp.verbose('no --target version specified, falling back to host node version', versionStr)
}
version = semver.parse(versionStr)
if (!version) {
return callback(new Error('Invalid version number: ' + versionStr))
}
gyp.opts.ensure = true
gyp.commands.install([ versionStr ], function (err, _version) {
if (err) return callback(err)
version = _version
gyp.verbose('setting target version to:', version)
createBuildDir()
})
}
function createBuildDir () {
gyp.verbose('attempting to create "build" dir', buildDir)
mkdirp(buildDir, function (err, isNew) {
if (err) return callback(err)
gyp.verbose('"build" dir needed to be created?', isNew)
createConfigFile()
})
}
function createConfigFile (err) {
if (err) return callback(err)
gyp.verbose('creating build/config.gypi file')
configPath = path.resolve(buildDir, 'config.gypi')
var config = process.config || {}
, defaults = config.target_defaults
, variables = config.variables
if (!defaults) {
defaults = config.target_defaults = {}
}
if (!variables) {
variables = config.variables = {}
}
if (!defaults.cflags) {
defaults.cflags = []
}
if (!defaults.defines) {
defaults.defines = []
}
if (!defaults.include_dirs) {
defaults.include_dirs = []
}
if (!defaults.libraries) {
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'
// also set the target_version variable
variables.target_version = version
// 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
}
// 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)
gyp.verbose('writing out config file', configPath)
fs.writeFile(configPath, [prefix, json, ''].join('\n'), runGypAddon)
}
function runGypAddon (err) {
if (err) return callback(err)
// location of the `gyp_addon` python script for the target node version
var gyp_addon = path.resolve(gyp.devDir, version, 'tools', 'gyp_addon')
if (!~argv.indexOf('-f') && !~argv.indexOf('--format')) {
if (win) {
gyp.verbose('gyp format was not specified; forcing "msvs"')
// force the 'make' target for non-Windows
argv.push('-f', 'msvs')
} else {
gyp.verbose('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=2010')
}
}
// include the "config.gypi" file that was generated
argv.unshift('-I' + configPath)
// enforce use of the "binding.gyp" file
argv.unshift('binding.gyp')
// execute `gyp_addon` from the current target node version
argv.unshift(gyp_addon)
var cp = gyp.spawn(python, argv)
cp.on('exit', onCpExit)
}
/**
* Called when the `gyp_addon` child process exits.
*/
function onCpExit (code, signal) {
if (code !== 0) {
callback(new Error('`gyp_addon` failed with exit code: ' + code))
} else {
// we're done
callback()
}
}
}
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