[PATCH v2 3/6] kernel: add support to extract compiled files

[<daniel.turull@ericsson.com>]

From: Daniel Turull <daniel.turull@ericsson.com>

Use gen_compile_commands.py to extract files used during compilation
for the used kernel configuration.

CC: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Daniel Turull <daniel.turull@ericsson.com>
---
 meta/classes-recipe/kernel.bbclass | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/meta/classes-recipe/kernel.bbclass b/meta/classes-recipe/kernel.bbclass
index 36ce659762..56060f2c91 100644
--- a/meta/classes-recipe/kernel.bbclass
+++ b/meta/classes-recipe/kernel.bbclass
@@ -867,3 +867,14 @@ EXPORT_FUNCTIONS do_deploy
 
 # Add using Device Tree support
 inherit kernel-devicetree
+
+KERNEL_FILES_DIR ?= "${LOG_DIR}/cve/kernel_files"
+KERNEL_SRC_FILES ?= "${KERNEL_FILES_DIR}/compile_commands.json"
+
+do_save_compiled_files() {
+    bbdebug 1 "Saving compiled files in ${KERNEL_SRC_FILES}"
+    mkdir -p ${KERNEL_FILES_DIR}
+    ${S}/scripts/clang-tools/gen_compile_commands.py -o ${KERNEL_SRC_FILES} -d ${B}
+}
+
+addtask do_save_compiled_files after do_compile do_compile_kernelmodules