gst-env.py

   1 #!/usr/bin/env python3
   2
   3 import argparse
   4 import contextlib
   5 import json
   6 import os
   7 import platform
   8 import re
   9 import site
  10 import shutil
  11 import subprocess
  12 import sys
  13 import tempfile
  14 import pathlib
  15
  16 from distutils.sysconfig import get_python_lib
  17 from distutils.util import strtobool
  18
  19 from scripts.common import get_meson
  20 from scripts.common import git
  21 from scripts.common import win32_get_short_path_name
  22 from scripts.common import get_wine_shortpath
  23
  24 SCRIPTDIR = os.path.dirname(os.path.realpath(__file__))
  25 PREFIX_DIR = os.path.join(SCRIPTDIR, 'prefix')
  26 # Use '_build' as the builddir instead of 'build'
  27 DEFAULT_BUILDDIR = os.path.join(SCRIPTDIR, 'build')
  28 if not os.path.exists(DEFAULT_BUILDDIR):
  29     DEFAULT_BUILDDIR = os.path.join(SCRIPTDIR, '_build')
  30
  31 TYPELIB_REG = re.compile(r'.*\.typelib$')
  32 SHAREDLIB_REG = re.compile(r'\.so|\.dylib|\.dll')
  33 GSTPLUGIN_FILEPATH_REG = re.compile(r'.*/lib[^/]*/gstreamer-1.0/[^/]+$')
  34
  35
  36 def listify(o):
  37     if isinstance(o, str):
  38         return [o]
  39     if isinstance(o, list):
  40         return o
  41     raise AssertionError('Object {!r} must be a string or a list'.format(o))
  42
  43 def stringify(o):
  44     if isinstance(o, str):
  45         return o
  46     if isinstance(o, list):
  47         if len(o) == 1:
  48             return o[0]
  49         raise AssertionError('Did not expect object {!r} to have more than one element'.format(o))
  50     raise AssertionError('Object {!r} must be a string or a list'.format(o))
  51
  52 def prepend_env_var(env, var, value, sysroot):
  53     if value.startswith(sysroot):
  54         value = value[len(sysroot):]
  55     # Try not to exceed maximum length limits for env vars on Windows
  56     if os.name is 'nt':
  57         value = win32_get_short_path_name(value)
  58     env_val = env.get(var, '')
  59     val = os.pathsep + value + os.pathsep
  60     # Don't add the same value twice
  61     if val in env_val or env_val.startswith(value + os.pathsep):
  62         return
  63     env[var] = val + env_val
  64     env[var] = env[var].replace(os.pathsep + os.pathsep, os.pathsep).strip(os.pathsep)
  65
  66 def is_library_target_and_not_plugin(target, filename):
  67     '''
  68     Don't add plugins to PATH/LD_LIBRARY_PATH because:
  69     1. We don't need to
  70     2. It causes us to exceed the PATH length limit on Windows and Wine
  71     '''
  72     if not target['type'].startswith('shared'):
  73         return False
  74     if not target['installed']:
  75         return False
  76     # Check if this output of that target is a shared library
  77     if not SHAREDLIB_REG.search(filename):
  78         return False
  79     # Check if it's installed to the gstreamer plugin location
  80     for install_filename in listify(target['install_filename']):
  81         if install_filename.endswith(os.path.basename(filename)):
  82             break
  83     else:
  84         # None of the installed files in the target correspond to the built
  85         # filename, so skip
  86         return False
  87     if GSTPLUGIN_FILEPATH_REG.search(install_filename.replace('\\', '/')):
  88         return False
  89     return True
  90
  91
  92 def get_wine_subprocess_env(options, env):
  93     with open(os.path.join(options.builddir, 'meson-info', 'intro-buildoptions.json')) as f:
  94         buildoptions = json.load(f)
  95
  96     prefix, = [o for o in buildoptions if o['name'] == 'prefix']
  97     path = os.path.normpath(os.path.join(prefix['value'], 'bin'))
  98     prepend_env_var(env, "PATH", path, options.sysroot)
  99     wine_path = get_wine_shortpath(
 100         options.wine.split(' '),
 101         [path] + env.get('WINEPATH', '').split(';')
 102     )
 103     if options.winepath:
 104         wine_path += ';' + options.winepath
 105     env['WINEPATH'] = wine_path
 106     env['WINEDEBUG'] = 'fixme-all'
 107
 108     return env
 109
 110
 111 def get_subprocess_env(options, gst_version):
 112     env = os.environ.copy()
 113
 114     env["CURRENT_GST"] = os.path.normpath(SCRIPTDIR)
 115     env["GST_VERSION"] = gst_version
 116     env["GST_VALIDATE_SCENARIOS_PATH"] = os.path.normpath(
 117         "%s/subprojects/gst-devtools/validate/data/scenarios" % SCRIPTDIR)
 118     env["GST_VALIDATE_PLUGIN_PATH"] = os.path.normpath(
 119         "%s/subprojects/gst-devtools/validate/plugins" % options.builddir)
 120     env["GST_VALIDATE_APPS_DIR"] = os.path.normpath(
 121         "%s/subprojects/gst-editing-services/tests/validate" % SCRIPTDIR)
 122     env["GST_ENV"] = 'gst-' + gst_version
 123     env["GST_REGISTRY"] = os.path.normpath(options.builddir + "/registry.dat")
 124     prepend_env_var(env, "PATH", os.path.normpath(
 125         "%s/subprojects/gst-devtools/validate/tools" % options.builddir),
 126         options.sysroot)
 127
 128     if options.wine:
 129         return get_wine_subprocess_env(options, env)
 130
 131     prepend_env_var(env, "PATH", os.path.join(SCRIPTDIR, 'meson'),
 132         options.sysroot)
 133
 134     env["GST_PLUGIN_SYSTEM_PATH"] = ""
 135     env["GST_PLUGIN_SCANNER"] = os.path.normpath(
 136         "%s/subprojects/gstreamer/libs/gst/helpers/gst-plugin-scanner" % options.builddir)
 137     env["GST_PTP_HELPER"] = os.path.normpath(
 138         "%s/subprojects/gstreamer/libs/gst/helpers/gst-ptp-helper" % options.builddir)
 139
 140     if os.name is 'nt':
 141         lib_path_envvar = 'PATH'
 142     elif platform.system() == 'Darwin':
 143         lib_path_envvar = 'DYLD_LIBRARY_PATH'
 144     else:
 145         lib_path_envvar = 'LD_LIBRARY_PATH'
 146
 147     prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(SCRIPTDIR, 'subprojects',
 148                                                         'gst-python', 'plugin'),
 149                     options.sysroot)
 150     prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(PREFIX_DIR, 'lib',
 151                                                         'gstreamer-1.0'),
 152                     options.sysroot)
 153     prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(options.builddir, 'subprojects',
 154                                                          'libnice', 'gst'),
 155                     options.sysroot)
 156     prepend_env_var(env, "GST_VALIDATE_SCENARIOS_PATH",
 157                     os.path.join(PREFIX_DIR, 'share', 'gstreamer-1.0',
 158                                  'validate', 'scenarios'),
 159                     options.sysroot)
 160     prepend_env_var(env, "GI_TYPELIB_PATH", os.path.join(PREFIX_DIR, 'lib',
 161                                                          'lib', 'girepository-1.0'),
 162                     options.sysroot)
 163     prepend_env_var(env, "PKG_CONFIG_PATH", os.path.join(PREFIX_DIR, 'lib', 'pkgconfig'),
 164                     options.sysroot)
 165
 166     # gst-indent
 167     prepend_env_var(env, "PATH", os.path.join(SCRIPTDIR, 'gstreamer', 'tools'),
 168                     options.sysroot)
 169
 170     # tools: gst-launch-1.0, gst-inspect-1.0
 171     prepend_env_var(env, "PATH", os.path.join(options.builddir, 'subprojects',
 172                                               'gstreamer', 'tools'),
 173                     options.sysroot)
 174     prepend_env_var(env, "PATH", os.path.join(options.builddir, 'subprojects',
 175                                               'gst-plugins-base', 'tools'),
 176                     options.sysroot)
 177
 178     # Library and binary search paths
 179     prepend_env_var(env, "PATH", os.path.join(PREFIX_DIR, 'bin'),
 180                     options.sysroot)
 181     if lib_path_envvar != 'PATH':
 182         prepend_env_var(env, lib_path_envvar, os.path.join(PREFIX_DIR, 'lib'),
 183                         options.sysroot)
 184         prepend_env_var(env, lib_path_envvar, os.path.join(PREFIX_DIR, 'lib64'),
 185                         options.sysroot)
 186     elif 'QMAKE' in os.environ:
 187         # There's no RPATH on Windows, so we need to set PATH for the qt5 DLLs
 188         prepend_env_var(env, 'PATH', os.path.dirname(os.environ['QMAKE']),
 189                         options.sysroot)
 190
 191     meson = get_meson()
 192     targets_s = subprocess.check_output(meson + ['introspect', options.builddir, '--targets'])
 193     targets = json.loads(targets_s.decode())
 194     paths = set()
 195     mono_paths = set()
 196     srcdir_path = pathlib.Path(options.srcdir)
 197     for target in targets:
 198         filenames = listify(target['filename'])
 199         for filename in filenames:
 200             root = os.path.dirname(filename)
 201             if srcdir_path / "subprojects/gst-devtools/validate/plugins" in (srcdir_path / root).parents:
 202                 continue
 203             if filename.endswith('.dll'):
 204                 mono_paths.add(os.path.join(options.builddir, root))
 205             if TYPELIB_REG.search(filename):
 206                 prepend_env_var(env, "GI_TYPELIB_PATH",
 207                                 os.path.join(options.builddir, root),
 208                                 options.sysroot)
 209             elif is_library_target_and_not_plugin(target, filename):
 210                 prepend_env_var(env, lib_path_envvar,
 211                                 os.path.join(options.builddir, root),
 212                                 options.sysroot)
 213             elif target['type'] == 'executable' and target['installed']:
 214                 paths.add(os.path.join(options.builddir, root))
 215
 216     with open(os.path.join(options.builddir, 'GstPluginsPath.json')) as f:
 217         for plugin_path in json.load(f):
 218             prepend_env_var(env, 'GST_PLUGIN_PATH', plugin_path,
 219                             options.sysroot)
 220
 221     for p in paths:
 222         prepend_env_var(env, 'PATH', p, options.sysroot)
 223
 224     if os.name != 'nt':
 225         for p in mono_paths:
 226             prepend_env_var(env, "MONO_PATH", p, options.sysroot)
 227
 228     presets = set()
 229     encoding_targets = set()
 230     pkg_dirs = set()
 231     python_dirs = set(["%s/subprojects/gstreamer/libs/gst/helpers/" % options.srcdir])
 232     if '--installed' in subprocess.check_output(meson + ['introspect', '-h']).decode():
 233         installed_s = subprocess.check_output(meson + ['introspect', options.builddir, '--installed'])
 234         for path, installpath in json.loads(installed_s.decode()).items():
 235             installpath_parts = pathlib.Path(installpath).parts
 236             path_parts = pathlib.Path(path).parts
 237
 238             # We want to add all python modules to the PYTHONPATH
 239             # in a manner consistent with the way they would be imported:
 240             # For example if the source path /home/meh/foo/bar.py
 241             # is to be installed in /usr/lib/python/site-packages/foo/bar.py,
 242             # we want to add /home/meh to the PYTHONPATH.
 243             # This will only work for projects where the paths to be installed
 244             # mirror the installed directory layout, for example if the path
 245             # is /home/meh/baz/bar.py and the install path is
 246             # /usr/lib/site-packages/foo/bar.py , we will not add anything
 247             # to PYTHONPATH, but the current approach works with pygobject
 248             # and gst-python at least.
 249             if 'site-packages' in installpath_parts:
 250                 install_subpath = os.path.join(*installpath_parts[installpath_parts.index('site-packages') + 1:])
 251                 if path.endswith(install_subpath):
 252                     python_dirs.add(path[:len (install_subpath) * -1])
 253
 254             if path.endswith('.prs'):
 255                 presets.add(os.path.dirname(path))
 256             elif path.endswith('.gep'):
 257                 encoding_targets.add(
 258                     os.path.abspath(os.path.join(os.path.dirname(path), '..')))
 259             elif path.endswith('.pc'):
 260                 # Is there a -uninstalled pc file for this file?
 261                 uninstalled = "{0}-uninstalled.pc".format(path[:-3])
 262                 if os.path.exists(uninstalled):
 263                     pkg_dirs.add(os.path.dirname(path))
 264
 265             if path.endswith('gstomx.conf'):
 266                 prepend_env_var(env, 'GST_OMX_CONFIG_DIR', os.path.dirname(path),
 267                                 options.sysroot)
 268
 269         for p in presets:
 270             prepend_env_var(env, 'GST_PRESET_PATH', p, options.sysroot)
 271
 272         for t in encoding_targets:
 273             prepend_env_var(env, 'GST_ENCODING_TARGET_PATH', t, options.sysroot)
 274
 275         for pkg_dir in pkg_dirs:
 276             prepend_env_var(env, "PKG_CONFIG_PATH", pkg_dir, options.sysroot)
 277     prepend_env_var(env, "PKG_CONFIG_PATH", os.path.join(options.builddir,
 278                                                          'subprojects',
 279                                                          'gst-plugins-good',
 280                                                          'pkgconfig'),
 281                     options.sysroot)
 282
 283     for python_dir in python_dirs:
 284         prepend_env_var(env, 'PYTHONPATH', python_dir, options.sysroot)
 285
 286     mesonpath = os.path.join(SCRIPTDIR, "meson")
 287     if os.path.join(mesonpath):
 288         # Add meson/ into PYTHONPATH if we are using a local meson
 289         prepend_env_var(env, 'PYTHONPATH', mesonpath, options.sysroot)
 290
 291     # For devhelp books
 292     if not 'XDG_DATA_DIRS' in env or not env['XDG_DATA_DIRS']:
 293         # Preserve default paths when empty
 294         prepend_env_var(env, 'XDG_DATA_DIRS', '/usr/local/share/:/usr/share/', '')
 295
 296     prepend_env_var (env, 'XDG_DATA_DIRS', os.path.join(options.builddir,
 297                                                         'subprojects',
 298                                                         'gst-docs',
 299                                                         'GStreamer-doc'),
 300                      options.sysroot)
 301
 302     return env
 303
 304 def get_windows_shell():
 305     command = ['powershell.exe' ,'-noprofile', '-executionpolicy', 'bypass', '-file', 'cmd_or_ps.ps1']
 306     result = subprocess.check_output(command)
 307     return result.decode().strip()
 308
 309 if __name__ == "__main__":
 310     parser = argparse.ArgumentParser(prog="gstreamer-uninstalled")
 311
 312     parser.add_argument("--builddir",
 313                         default=DEFAULT_BUILDDIR,
 314                         help="The meson build directory")
 315     parser.add_argument("--srcdir",
 316                         default=SCRIPTDIR,
 317                         help="The top level source directory")
 318     parser.add_argument("--sysroot",
 319                         default='',
 320                         help="The sysroot path used during cross-compilation")
 321     parser.add_argument("--wine",
 322                         default='',
 323                         help="Build a wine env based on specified wine command")
 324     parser.add_argument("--winepath",
 325                         default='',
 326                         help="Exra path to set to WINEPATH.")
 327     options, args = parser.parse_known_args()
 328
 329     if not os.path.exists(options.builddir):
 330         print("GStreamer not built in %s\n\nBuild it and try again" %
 331               options.builddir)
 332         exit(1)
 333     options.builddir = os.path.abspath(options.builddir)
 334
 335     if not os.path.exists(options.srcdir):
 336         print("The specified source dir does not exist" %
 337               options.srcdir)
 338         exit(1)
 339
 340     # The following incantation will retrieve the current branch name.
 341     gst_version = git("rev-parse", "--symbolic-full-name", "--abbrev-ref", "HEAD",
 342                       repository_path=options.srcdir).strip('\n')
 343
 344     if options.wine:
 345         gst_version += '-' + os.path.basename(options.wine)
 346
 347     if not args:
 348         if os.name is 'nt':
 349             shell = get_windows_shell()
 350             if shell == 'powershell.exe':
 351                 args = ['powershell.exe']
 352                 args += ['-NoLogo', '-NoExit']
 353                 prompt = 'function global:prompt {  "[gst-' + gst_version + '"+"] PS " + $PWD + "> "}'
 354                 args += ['-Command', prompt]
 355             else:
 356                 args = [os.environ.get("COMSPEC", r"C:\WINDOWS\system32\cmd.exe")]
 357                 args += ['/k', 'prompt [gst-{}] $P$G'.format(gst_version)]
 358         else:
 359             args = [os.environ.get("SHELL", os.path.realpath("/bin/sh"))]
 360         if "bash" in args[0] and not strtobool(os.environ.get("GST_BUILD_DISABLE_PS1_OVERRIDE", r"FALSE")):
 361             tmprc = tempfile.NamedTemporaryFile(mode='w')
 362             bashrc = os.path.expanduser('~/.bashrc')
 363             if os.path.exists(bashrc):
 364                 with open(bashrc, 'r') as src:
 365                     shutil.copyfileobj(src, tmprc)
 366             tmprc.write('\nexport PS1="[gst-%s] $PS1"' % gst_version)
 367             tmprc.flush()
 368             # Let the GC remove the tmp file
 369             args.append("--rcfile")
 370             args.append(tmprc.name)
 371     try:
 372         exit(subprocess.call(args, close_fds=False,
 373                              env=get_subprocess_env(options, gst_version)))
 374     except subprocess.CalledProcessError as e:
 375         exit(e.returncode)