[oe] [PATCH] sourceipk: fix race condition with compileconfigs

[Chase Maupin]

* This patch adds an empty compileconfigs function to the
  sourceipk class.
* This is required because when making a sourceipk of a
  package using the multi-kernel.inc functionality you will
  have a race condition between the compileconfigs of the
  multi-kernel file building the kernel and sourceipk trying
  to copy and patch the sources.  The resulting conditions
  can then occur:
    - You will package some interim build files, yielding
      a sourceipk that is not consistent between builds
    - You will try to copy interim build files as they are
      being deleted which will result in an error and break
      the build.
* The empty compileconfigs function is overwritten by the
  real compileconfigs function when the multi-kernel.inc file
  is used.

Signed-off-by: Chase Maupin <Chase.Maupin at ti.com>
---
 classes/sourceipk.bbclass |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)

diff --git a/classes/sourceipk.bbclass b/classes/sourceipk.bbclass
index 8a92115..1b4a318 100644
--- a/classes/sourceipk.bbclass
+++ b/classes/sourceipk.bbclass
@@ -144,7 +144,18 @@ EXPORT_FUNCTIONS do_create_srcipk
 
 do_create_srcipk[deptask] = "do_patch"
 
-addtask create_srcipk after do_patch before do_configure
+# Add a blank compileconfigs task.  This allows the sourceipk to schedule
+# its copy of the sources for kernels using the multi-kernel functionality
+# before the compileconfigs task.  Failure to do this results in a race
+# condition where in the best case the sources packaged may contain binary
+# builds and in the worst case binary files being cleaned cause an error
+# in the copy command for the sourceipk.
+do_compileconfigs() {
+    :
+}
+addtask compileconfigs after do_patch before do_configure
+
+addtask create_srcipk after do_patch before do_compileconfigs
 
 #Add source packages to list of packages OE knows about
 PACKAGES_DYNAMIC += "${PN}-src"
-- 
1.7.0.4