gstreamer/gst-uninstalled.py
Mathieu Duponchelle c938c75916 gst-uninstalled: symlink mesonconfig in site-packages
This is still incredibly ugly, but at least now mesonconfig
gets found, unlike before where the path where it was looked
for was the path of the sitecustomize symlink, not of its target
(https://bugs.python.org/issue6386)
2018-01-19 21:07:08 +01:00

249 lines
10 KiB
Python
Executable file

#!/usr/bin/env python3
import argparse
import json
import os
import platform
import re
import site
import shutil
import subprocess
import sys
import tempfile
from distutils.sysconfig import get_python_lib
from common import get_meson
SCRIPTDIR = os.path.dirname(os.path.realpath(__file__))
PREFIX_DIR = os.path.join(SCRIPTDIR, 'prefix')
def prepend_env_var(env, var, value):
env[var] = os.pathsep + value + os.pathsep + env.get(var, "")
env[var] = env[var].replace(os.pathsep + os.pathsep, os.pathsep).strip(os.pathsep)
def get_subprocess_env(options):
env = os.environ.copy()
env["CURRENT_GST"] = os.path.normpath(SCRIPTDIR)
env["GST_VALIDATE_SCENARIOS_PATH"] = os.path.normpath(
"%s/subprojects/gst-devtools/validate/data/scenarios" % SCRIPTDIR)
env["GST_VALIDATE_PLUGIN_PATH"] = os.path.normpath(
"%s/subprojects/gst-devtools/validate/plugins" % options.builddir)
env["GST_VALIDATE_APPS_DIR"] = os.path.normpath(
"%s/subprojects/gst-editing-services/tests/validate" % SCRIPTDIR)
prepend_env_var(env, "PATH", os.path.normpath(
"%s/subprojects/gst-devtools/validate/tools" % options.builddir))
prepend_env_var(env, "PATH", os.path.join(SCRIPTDIR, 'meson'))
env["GST_VERSION"] = options.gst_version
env["GST_ENV"] = 'gst-' + options.gst_version
env["GST_PLUGIN_SYSTEM_PATH"] = ""
env["GST_PLUGIN_SCANNER"] = os.path.normpath(
"%s/subprojects/gstreamer/libs/gst/helpers/gst-plugin-scanner" % options.builddir)
env["GST_PTP_HELPER"] = os.path.normpath(
"%s/subprojects/gstreamer/libs/gst/helpers/gst-ptp-helper" % options.builddir)
env["GST_REGISTRY"] = os.path.normpath(options.builddir + "/registry.dat")
sharedlib_reg = re.compile(r'\.so|\.dylib|\.dll')
typelib_reg = re.compile(r'.*\.typelib$')
pluginpath_reg = re.compile(r'lib.*' + re.escape(os.path.normpath('/gstreamer-1.0/')))
if os.name is 'nt':
lib_path_envvar = 'PATH'
elif platform.system() == 'Darwin':
lib_path_envvar = 'DYLD_LIBRARY_PATH'
else:
lib_path_envvar = 'LD_LIBRARY_PATH'
prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(SCRIPTDIR, 'subprojects',
'gst-python', 'plugin'))
prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(PREFIX_DIR, 'lib',
'gstreamer-1.0'))
prepend_env_var(env, "PATH", os.path.join(PREFIX_DIR, 'bin'))
prepend_env_var(env, lib_path_envvar, os.path.join(PREFIX_DIR, 'lib'))
prepend_env_var(env, "GST_VALIDATE_SCENARIOS_PATH", os.path.join(
PREFIX_DIR, 'share', 'gstreamer-1.0', 'validate', 'scenarios'))
prepend_env_var(env, "GI_TYPELIB_PATH", os.path.join(PREFIX_DIR, 'lib',
'lib', 'girepository-1.0'))
meson = get_meson()
targets_s = subprocess.check_output([sys.executable, meson, 'introspect', options.builddir, '--targets'])
targets = json.loads(targets_s.decode())
paths = set()
mono_paths = set()
for target in targets:
filename = target['filename']
root = os.path.dirname(filename)
if filename.endswith('.dll'):
mono_paths.add(os.path.join(options.builddir, root))
if typelib_reg.search(filename):
prepend_env_var(env, "GI_TYPELIB_PATH",
os.path.join(options.builddir, root))
elif sharedlib_reg.search(filename):
if target.get('type') != "shared library":
continue
if target.get('installed') and pluginpath_reg.search(os.path.normpath(target.get('install_filename'))):
prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(options.builddir, root))
continue
prepend_env_var(env, lib_path_envvar,
os.path.join(options.builddir, root))
elif target.get('type') == 'executable' and target.get('installed'):
paths.add(os.path.join(options.builddir, root))
for p in paths:
prepend_env_var(env, 'PATH', p)
if os.name != 'nt':
for p in mono_paths:
prepend_env_var(env, "MONO_PATH", p)
presets = set()
encoding_targets = set()
pkg_dirs = set()
if '--installed' in subprocess.check_output([sys.executable, meson, 'introspect', '-h']).decode():
installed_s = subprocess.check_output([sys.executable, meson, 'introspect',
options.builddir, '--installed'])
for path, installpath in json.loads(installed_s.decode()).items():
if path.endswith('.prs'):
presets.add(os.path.dirname(path))
elif path.endswith('.gep'):
encoding_targets.add(
os.path.abspath(os.path.join(os.path.dirname(path), '..')))
elif path.endswith('.pc'):
# Is there a -uninstalled pc file for this file?
uninstalled = "{0}-uninstalled.pc".format(path[:-3])
if os.path.exists(uninstalled):
pkg_dirs.add(os.path.dirname(path))
for p in presets:
prepend_env_var(env, 'GST_PRESET_PATH', p)
for t in encoding_targets:
prepend_env_var(env, 'GST_ENCODING_TARGET_PATH', t)
for pkg_dir in pkg_dirs:
prepend_env_var(env, "PKG_CONFIG_PATH", pkg_dir)
prepend_env_var(env, "PKG_CONFIG_PATH", os.path.join(options.builddir,
'subprojects',
'gst-plugins-good',
'pkgconfig'))
mesonpath = os.path.join(SCRIPTDIR, "meson")
if os.path.join(mesonpath):
# Add meson/ into PYTHONPATH if we are using a local meson
prepend_env_var(env, 'PYTHONPATH', mesonpath)
return env
# https://stackoverflow.com/questions/1871549/determine-if-python-is-running-inside-virtualenv
def in_venv():
return (hasattr(sys, 'real_prefix') or
(hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix))
def python_env(options, unset_env=False):
"""
Setup our overrides_hack.py as sitecustomize.py script in user
site-packages if unset_env=False, else unset, previously set
env.
"""
subprojects_path = os.path.join(options.builddir, "subprojects")
gst_python_path = os.path.join(SCRIPTDIR, "subprojects", "gst-python")
if not os.path.exists(os.path.join(subprojects_path, "gst-python")) or \
not os.path.exists(gst_python_path):
return False
if in_venv ():
sitepackages = get_python_lib()
else:
sitepackages = site.getusersitepackages()
if not sitepackages:
return False
sitecustomize = os.path.join(sitepackages, "sitecustomize.py")
overrides_hack = os.path.join(gst_python_path, "testsuite", "overrides_hack.py")
mesonconfig = os.path.join(gst_python_path, "testsuite", "mesonconfig.py")
mesonconfig_link = os.path.join(sitepackages, "mesonconfig.py")
if not unset_env:
if os.path.exists(sitecustomize):
if os.path.realpath(sitecustomize) == overrides_hack:
print("Customize user site script already linked to the GStreamer one")
return False
old_sitecustomize = os.path.join(sitepackages,
"old.sitecustomize.gstuninstalled.py")
shutil.move(sitecustomize, old_sitecustomize)
elif not os.path.exists(sitepackages):
os.makedirs(sitepackages)
os.symlink(overrides_hack, sitecustomize)
os.symlink(mesonconfig, mesonconfig_link)
return os.path.realpath(sitecustomize) == overrides_hack
else:
if not os.path.realpath(sitecustomize) == overrides_hack:
return False
os.remove(sitecustomize)
os.remove (mesonconfig_link)
old_sitecustomize = os.path.join(sitepackages,
"old.sitecustomize.gstuninstalled.py")
if os.path.exists(old_sitecustomize):
shutil.move(old_sitecustomize, sitecustomize)
return True
if __name__ == "__main__":
parser = argparse.ArgumentParser(prog="gstreamer-uninstalled")
parser.add_argument("--builddir",
default=os.path.join(SCRIPTDIR, "build"),
help="The meson build directory")
parser.add_argument("--srcdir",
default=SCRIPTDIR,
help="The top level source directory")
parser.add_argument("--gst-version", default="master",
help="The GStreamer major version")
options, args = parser.parse_known_args()
if not os.path.exists(options.builddir):
print("GStreamer not built in %s\n\nBuild it and try again" %
options.builddir)
exit(1)
if not os.path.exists(options.srcdir):
print("The specified source dir does not exist" %
options.srcdir)
exit(1)
if not args:
if os.name is 'nt':
args = [os.environ.get("COMSPEC", r"C:\WINDOWS\system32\cmd.exe")]
else:
args = [os.environ.get("SHELL", os.path.realpath("/bin/sh"))]
if "bash" in args[0]:
bashrc = os.path.expanduser('~/.bashrc')
if os.path.exists(bashrc):
tmprc = tempfile.NamedTemporaryFile(mode='w')
with open(bashrc, 'r') as src:
shutil.copyfileobj(src, tmprc)
tmprc.write('\nexport PS1="[gst-%s] $PS1"' % options.gst_version)
tmprc.flush()
# Let the GC remove the tmp file
args.append("--rcfile")
args.append(tmprc.name)
python_set = python_env(options)
try:
exit(subprocess.call(args, cwd=options.srcdir, close_fds=False,
env=get_subprocess_env(options)))
except subprocess.CalledProcessError as e:
exit(e.returncode)
finally:
if python_set:
python_env(options, unset_env=True)