config/writemozinfo.py

   1 #!/usr/bin/env python
   2 # This Source Code Form is subject to the terms of the Mozilla Public
   3 # License, v. 2.0. If a copy of the MPL was not distributed with this
   4 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   5
   6 #
   7 # This script is run during configure, taking variables set in configure
   8 # and producing a JSON file that describes some portions of the build
   9 # configuration, such as the target OS and CPU.
  10 #
  11 # The output file is intended to be used as input to the mozinfo package.
  12 from __future__ import print_function
  13 import os
  14 import re
  15 import sys
  16 import json
  17
  18
  19 def build_dict(env=os.environ):
  20     """
  21     Build a dict containing data about the build configuration from
  22     the environment.
  23     """
  24     d = {}
  25     # Check that all required variables are present first.
  26     required = ["TARGET_CPU", "OS_TARGET", "MOZ_WIDGET_TOOLKIT"]
  27     missing = [r for r in required if r not in env]
  28     if missing:
  29         raise Exception("Missing required environment variables: %s" %
  30                         ', '.join(missing))
  31
  32     if 'MOZCONFIG' in env:
  33         d["mozconfig"] = env["MOZCONFIG"]
  34
  35     if 'TOPSRCDIR' in env:
  36         d["topsrcdir"] = env["TOPSRCDIR"]
  37
  38     # os
  39     o = env["OS_TARGET"]
  40     known_os = {"Linux": "linux",
  41                 "WINNT": "win",
  42                 "Darwin": "mac",
  43                 "Android": "b2g" if env["MOZ_WIDGET_TOOLKIT"] == "gonk" else "android"}
  44     if o in known_os:
  45         d["os"] = known_os[o]
  46     else:
  47         # Allow unknown values, just lowercase them.
  48         d["os"] = o.lower()
  49
  50     # Widget toolkit, just pass the value directly through.
  51     d["toolkit"] = env["MOZ_WIDGET_TOOLKIT"]
  52
  53     # Application name
  54     if 'MOZ_APP_NAME' in env:
  55         d["appname"] = env["MOZ_APP_NAME"]
  56
  57     # processor
  58     p = env["TARGET_CPU"]
  59     # for universal mac builds, put in a special value
  60     if d["os"] == "mac" and "UNIVERSAL_BINARY" in env and env["UNIVERSAL_BINARY"] == "1":
  61         p = "universal-x86-x86_64"
  62     else:
  63         # do some slight massaging for some values
  64         #TODO: retain specific values in case someone wants them?
  65         if p.startswith("arm"):
  66             p = "arm"
  67         elif re.match("i[3-9]86", p):
  68             p = "x86"
  69     d["processor"] = p
  70     # hardcoded list of 64-bit CPUs
  71     if p in ["x86_64", "ppc64"]:
  72         d["bits"] = 64
  73     # hardcoded list of known 32-bit CPUs
  74     elif p in ["x86", "arm", "ppc"]:
  75         d["bits"] = 32
  76     # other CPUs will wind up with unknown bits
  77
  78     # debug
  79     d["debug"] = 'MOZ_DEBUG' in env and env['MOZ_DEBUG'] == '1'
  80
  81     # crashreporter
  82     d["crashreporter"] = 'MOZ_CRASHREPORTER' in env and env['MOZ_CRASHREPORTER'] == '1'
  83     return d
  84
  85 def write_json(file, env=os.environ):
  86     """
  87     Write JSON data about the configuration specified in |env|
  88     to |file|, which may be a filename or file-like object.
  89     See build_dict for information about what  environment variables are used,
  90     and what keys are produced.
  91     """
  92     build_conf = build_dict(env)
  93     if isinstance(file, basestring):
  94         with open(file, "w") as f:
  95             json.dump(build_conf, f)
  96     else:
  97         json.dump(build_conf, file)
  98
  99
 100 if __name__ == '__main__':
 101     try:
 102         write_json(sys.argv[1] if len(sys.argv) > 1 else sys.stdout)
 103     except Exception as e:
 104         print(str(e), file=sys.stderr)
 105         sys.exit(1)