module.bbclass: add lock to prevent error bulding ext modules

When external modules are built, files in $STAGING_KERNEL_DIR/scripts/basic will/can get
rebuilt.
This raises a potential race condition. Prevent this by adding a lock around the
do_make_scripts() function. Further, make sure that the kernel has been installed
to the sysroot, prior to executing this new task.

(From OE-Core rev: 8681b82e8b466929205edde7ba479f3ac1a6143e)

(From OE-Core rev: 694e3016e25dff3f573291830d79982c8b8793a2)

Signed-off-by: Anders Darander <anders@chargestorm.se>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/meta/classes/module.bbclass b/meta/classes/module.bbclass
index 572df0d295..53c16b7389 100644
--- a/meta/classes/module.bbclass
+++ b/meta/classes/module.bbclass
@@ -14,8 +14,11 @@ do_make_scripts() {
                    -C ${STAGING_KERNEL_DIR} scripts
 }
 
+addtask make_scripts before do_compile
+do_make_scripts[lockfiles] = "${TMPDIR}/kernel-scripts.lock"
+do_make_scripts[deptask] = "do_populate_sysroot"
+
 module_do_compile() {
-        do_make_scripts
         unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS
         oe_runmake KERNEL_PATH=${STAGING_KERNEL_DIR}   \
                    KERNEL_SRC=${STAGING_KERNEL_DIR}    \