build: skip kernel stack validation when building on macOS

Since we switched to 4.19, the kernel build checks for libelf to decide if
it should build tools for stack validation.

On macOS, this check fails during target/compile, but succeeds during package
build (because of the pkg-config path picking up target libraries).

Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry picked from commit c3e31b6a9b040912be0b532f9bf29d91c6c74382)

diff --git a/include/kernel.mk b/include/kernel.mk
index d01bfda9d2a547f143a73edc24810deeb5e65157..4565448caa4de0a7d8d7b37f2de19c9e5cda55e5 100644 (file)
--- a/include/kernel.mk
+++ b/include/kernel.mk
@@ -129,6 +129,10 @@ ifdef CONFIG_USE_SPARSE
   KERNEL_MAKEOPTS += C=1 CHECK=$(STAGING_DIR_HOST)/bin/sparse
 endif
 
+ifeq ($(HOST_OS),Darwin)
+  export SKIP_STACK_VALIDATION:=1
+endif
+
 PKG_EXTMOD_SUBDIRS ?= .
 
 define populate_module_symvers