Changes between Initial Version and Version 1 of WebKitGTK/Chroot

Timestamp:

Jun 19, 2013, 10:19:00 AM (12 years ago)

Author:

Andres Gomez

Comment:

Initial editing

WebKitGTK/Chroot

@@ +1 @@
+[[PageOutline]]
+
+= Using a chroot as working environment =
+
+Although WebKit working environment and building system is quite self contained, some people like still to work in a `chroot` so they can move the complete environment from a computer to another or from a distribution to a different one without major problems and keeping their own production environment clean and totally independent from WebKit development.
+
+Working in a `chroot`, however, brings some drawbacks. Here you can find some tips, common problems and solutions.
+
+== Running tests into the chroot ==
+
+WebKitGtkLayoutTests explains how to run WebKit tests.
+
+=== Running python based test with multiprocess support ===
+
+I'm running my development environment in a schroot with Ubuntu in an
+Ubuntu host.
+
+It hapenned to me the following error when trying to run the tests
+
+{{{
+$ ./Tools/Scripts/run-webkit-tests --gtk --debug
+Using port 'gtk'
+Test configuration: <, x86, debug>
+Placing test results in /opt/webkit/WebKit.git/WebKitBuild/Debug/layout-test-results
+Baseline search path: gtk -> generic
+Using Debug build
+Pixel tests disabled
+Regular timeout: 12000, slow test timeout: 60000
+Command line: /opt/webkit/WebKit.git/WebKitBuild/Debug/Programs/DumpRenderTree -
+
+Found 31495 tests; running 28693, skipping 2802.
+Running 4 DumpRenderTrees in parallel over 727 shards (1 locked).
+
+Releasing server lock ...
+OSError raised: [Errno 38] Function not implemented
+    File "/opt/webkit/WebKit.git/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py", line 110, in run
+      unexpected_result_count = manager.run(args)
+    File "/opt/webkit/WebKit.git/Tools/Scripts/webkitpy/layout_tests/controllers/manager.py", line 411, in run
+      self._run_tests(self._test_names, result_summary, int(self._options.child_processes))
+    File "/opt/webkit/WebKit.git/Tools/Scripts/webkitpy/layout_tests/controllers/manager.py", line 464, in _run_tests
+      return self._runner.run_tests(test_inputs, self._expectations, result_summary, num_workers, needs_http, needs_websockets, self._retrying)
+    File "/opt/webkit/WebKit.git/Tools/Scripts/webkitpy/layout_tests/controllers/layout_test_runner.py", line 141, in run_tests
+      with message_pool.get(self, self._worker_factory, num_workers, self._port.worker_startup_delay_secs(), self._port.host) as pool:
+    File "/opt/webkit/WebKit.git/Tools/Scripts/webkitpy/common/message_pool.py", line 61, in get
+      return _MessagePool(caller, worker_factory, num_workers, worker_startup_delay_secs, host)
+    File "/opt/webkit/WebKit.git/Tools/Scripts/webkitpy/common/message_pool.py", line 79, in __init__
+      self._messages_to_worker = multiprocessing.Queue()
+    File "/usr/lib/python2.7/multiprocessing/__init__.py", line 218, in Queue
+      return Queue(maxsize)
+    File "/usr/lib/python2.7/multiprocessing/queues.py", line 63, in __init__
+      self._rlock = Lock()
+    File "/usr/lib/python2.7/multiprocessing/synchronize.py", line 147, in __init__
+      SemLock.__init__(self, SEMAPHORE, 1, 1)
+    File "/usr/lib/python2.7/multiprocessing/synchronize.py", line 75, in __init__
+      sl = self._semlock = _multiprocessing.SemLock(kind, value, maxvalue)
+Failed to execute Tools/Scripts/new-run-webkit-tests at ./Tools/Scripts/run-webkit-tests line 126.
+}}}
+
+The reason is explained in this post
+http://www.boris.co/2012/02/server-ubuntu-11.html
+
+Python's multithreading requires /dev/shm to work. In Ubuntu /dev/shm
+points to /run/shm by default. Rename (or delete, I doubt it is
+necessary anymore) existing /dev/shm.
+
+Create /dev/shm directory
+
+{{{
+$ sudo -i (become root)
+$ mkdir /dev/shm
+}}}
+
+Add to /etc/fstab mounting of /dev/shm command
+
+{{{
+tmpfs /dev/shm    tmpfs   defaults,noexec,nosuid     0     0
+}}}
+
+Mount all unmounted filesystems from /etc/fstab.
+
+{{{
+$ mount -a
+}}}
+
+You may need to do this into your schroot too.
+
+
+== Pulse Audio ==
+