classes/externalsrc: show a warning on compiling

Make sure there's no chance of anyone forgetting they have a recipe set
up for externalsrc; otherwise you could get confused about what is going
on. (With our default logging setup we can't make it a note because the
UI doesn't forward those; otherwise I would have used bb.note().)

(From OE-Core rev: 7b73473bc9d19331a103cf4958059d3ceb84b486)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/meta/classes/externalsrc.bbclass b/meta/classes/externalsrc.bbclass
index 234bd8dedd..25f0be96a5 100644
--- a/meta/classes/externalsrc.bbclass
+++ b/meta/classes/externalsrc.bbclass
@@ -68,7 +68,13 @@ python () {
         for task in d.getVar("SRCTREECOVEREDTASKS", True).split():
             bb.build.deltask(task, d)
 
+        d.prependVarFlag('do_compile', 'prefuncs', "externalsrc_compile_prefunc ")
+
         # Ensure compilation happens every time
         d.setVarFlag('do_compile', 'nostamp', '1')
 }
 
+python externalsrc_compile_prefunc() {
+    # Make it obvious that this is happening, since forgetting about it could lead to much confusion
+    bb.warn('Compiling %s from external source %s' % (d.getVar('PN', True), d.getVar('EXTERNALSRC', True)))
+}