kernel: speed up build system by getting rid of redundant work

KERNELRELEASE contains a $(shell) call which is evaluated over and over
again.
The call to checksyscalls.sh is unnecessary for LEDE and also takes a
few seconds to complete.

Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/include/kernel-defaults.mk b/include/kernel-defaults.mk
index 10bd67a571f12b2ffeb97624654f3f2c68905af4..1c3b428b1661d2fa2e4feb9c0b1eb11992d9dd7d 100644 (file)
--- a/include/kernel-defaults.mk
+++ b/include/kernel-defaults.mk
@@ -23,7 +23,9 @@ KERNEL_MAKEOPTS := -C $(LINUX_DIR) \
        HOST_LOADLIBES="-L$(STAGING_DIR_HOST)/lib" \
        CONFIG_SHELL="$(BASH)" \
        $(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='') \
-       $(if $(PKG_BUILD_ID),LDFLAGS_MODULE=--build-id=0x$(PKG_BUILD_ID))
+       $(if $(PKG_BUILD_ID),LDFLAGS_MODULE=--build-id=0x$(PKG_BUILD_ID)) \
+       KERNELRELEASE=$(LINUX_VERSION) \
+       cmd_syscalls=
 
 ifdef CONFIG_STRIP_KERNEL_EXPORTS
   KERNEL_MAKEOPTS += \