gstreamer/gst-uninstalled.py
Guillaume Desmottes 0d2f4e136f gst-uninstalled: set PKG_CONFIG_PATH
Look for -uninstalled pc files and update PKG_CONFIG_PATH with the
directories containing those.

This feature is useful for users building the GStreamer stack
using meson and having to link it to another project which is still
using the autotools.

Fix a regression from the old gst-uninstalled tool.

https://bugzilla.gnome.org/show_bug.cgi?id=776810
2017-01-05 09:45:05 -03:00

199 lines
7.6 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 common import get_meson
SCRIPTDIR = os.path.abspath(os.path.dirname(__file__))
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()
prepend_env_var(env, "GST_PLUGIN_PATH", options.builddir)
prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(SCRIPTDIR, 'subprojects',
'gst-python', 'plugin'))
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$')
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'
meson, mesonconf, mesonintrospect = get_meson()
targets_s = subprocess.check_output([sys.executable, mesonintrospect, options.builddir, '--targets'])
targets = json.loads(targets_s.decode())
paths = set()
for target in targets:
filename = target['filename']
root = os.path.dirname(filename)
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 os.path.normpath("lib/gstreamer-1.0") in os.path.normpath(target.get('install_filename')):
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)
presets = set()
encoding_targets = set()
pkg_dirs = set()
if '--installed' in subprocess.check_output([mesonintrospect, '-h']).decode():
installed_s = subprocess.check_output([sys.executable, mesonintrospect,
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)
return env
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
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")
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)
return os.path.realpath(sitecustomize) == overrides_hack
else:
if not os.path.realpath(sitecustomize) == overrides_hack:
return False
os.remove(sitecustomize)
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("--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 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, env=get_subprocess_env(options)))
except subprocess.CalledProcessError as e:
exit(e.returncode)
finally:
if python_set:
python_env(options, unset_env=True)