sanity.bbclass: make sure python is a full install

Components of the Standard Library should be available. Add a sanity
check for xml.parsers.expat; we might add more in the future.

[YOCTO #4424]

(From OE-Core rev: bb027a332f2f2927a6bcbc4c035b42a012d0579e)

Signed-off-by: Jesse Zhang <sen.zhang@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/meta/classes/sanity.bbclass b/meta/classes/sanity.bbclass
index 3b01acf56d..6cad4bc612 100644
--- a/meta/classes/sanity.bbclass
+++ b/meta/classes/sanity.bbclass
@@ -387,6 +387,12 @@ def check_sanity(sanity_data):
     import sys
     if sys.hexversion < 0x020600F0:
         messages = messages + 'The system requires at least Python 2.6 to run. Please update your Python interpreter.\n'
+    # Check the python install is complete. glib-2.0-natives requries
+    # xml.parsers.expat
+    try:
+        import xml.parsers.expat
+    except ImportError:
+        messages = messages + 'Your python is not a full install. Please install the module xml.parsers.expat (python-xml on openSUSE and SUSE Linux).\n'
 
     if (LooseVersion(bb.__version__) < LooseVersion(minversion)):
         messages = messages + 'Bitbake version %s is required and version %s was found\n' % (minversion, bb.__version__)