kernel.bbclass: support kernel image type of vmlinux.gz

Add support for a gzipped vmlinux kernel by specifying:

  KERNEL_IMAGETYPE = "vmlinux.gz"

(From OE-Core rev: cb17b6c2a72f260c61b0ec46887c2a04ac5b3f80)

Signed-off-by: Mike Crowe <mac@mcrowe.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index 52aea97372..229679c72e 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -75,10 +75,15 @@ EXTRA_OEMAKE = ""
 
 KERNEL_ALT_IMAGETYPE ??= ""
 
+KERNEL_IMAGETYPE_FOR_MAKE = "${@(lambda s: s[:-3] if s[-3:] == ".gz" else s)(bb.data.getVar('KERNEL_IMAGETYPE', d, 1))}"
+
 kernel_do_compile() {
         unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
         oe_runmake include/linux/version.h CC="${KERNEL_CC}" LD="${KERNEL_LD}"
-        oe_runmake ${KERNEL_IMAGETYPE} ${KERNEL_ALT_IMAGETYPE} CC="${KERNEL_CC}" LD="${KERNEL_LD}"
+        oe_runmake ${KERNEL_IMAGETYPE_FOR_MAKE} ${KERNEL_ALT_IMAGETYPE} CC="${KERNEL_CC}" LD="${KERNEL_LD}"
+        if test "${KERNEL_IMAGETYPE_FOR_MAKE}.gz" = "${KERNEL_IMAGETYPE}"; then
+                gzip -9c < "${KERNEL_IMAGETYPE_FOR_MAKE}" > "${KERNEL_OUTPUT}"
+        fi
 }
 
 do_compile_kernelmodules() {