[OE-core] [PATCH 1/1] base.bbclass: Check BuildStarted for HOSTTOOLS

[Robert Yang]

There might be no bb.event.ConfigParsed event bitbake server is running,
so check bb.event.BuildStarted to make sure HOSTTOOLS_DIR existed when
BuildStarted.

Fixed:
$ export BB_SERVER_TIMEOUT=-1
$ bitbake quilt-native
$ rm -fr tmp
$ bitbake quilt-native
ERROR: Error running gcc  --version: /bin/sh: gcc: command not found

This error is caused by enable_uninative(), it runs twice (ConfigParsed and
BuildStarted), the error would happen when there is no ConfigParsed event
(no hosttools is created), but BuildStarted. This patch can fix the problem.

[YOCTO #13022]

Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
---
 meta/classes/base.bbclass | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/meta/classes/base.bbclass b/meta/classes/base.bbclass
index f1a3c0e..283cb0f 100644
--- a/meta/classes/base.bbclass
+++ b/meta/classes/base.bbclass
@@ -224,7 +224,11 @@ base_eventhandler[eventmask] = "bb.event.ConfigParsed bb.event.MultiConfigParsed
 python base_eventhandler() {
     import bb.runqueue
 
-    if isinstance(e, bb.event.ConfigParsed):
+    # There might be no bb.event.ConfigParsed event bitbake server is running,
+    # so check bb.event.BuildStarted to make sure HOSTTOOLS_DIR existed when
+    # BuildStarted.
+    if isinstance(e, bb.event.ConfigParsed) or \
+            (isinstance(e, bb.event.BuildStarted) and not os.path.exists(d.getVar('HOSTTOOLS_DIR'))):
         if not d.getVar("NATIVELSBSTRING", False):
             d.setVar("NATIVELSBSTRING", lsb_distro_identifier(d))
         d.setVar('BB_VERSION', bb.__version__)
-- 
2.7.4