build: use -nostdinc and -isystem in NOSTDINC_FLAGS for out-of-tree kernel modules

[openwrt/openwrt.git] / include / kernel.mk

diff --git a/include/kernel.mk b/include/kernel.mk
index d2a5b421384b862c8964e23e0fd748c7e2d75ce2..e4074a48f4b27b3522b95b239af0817b5bacfec9 100644 (file)
--- a/include/kernel.mk
+++ b/include/kernel.mk
@@ -118,6 +118,9 @@ KERNEL_MAKE_FLAGS = \
        cmd_syscalls= \
        $(if $(__package_mk),KBUILD_EXTRA_SYMBOLS="$(wildcard $(PKG_SYMVERS_DIR)/*.symvers)")
 
        cmd_syscalls= \
        $(if $(__package_mk),KBUILD_EXTRA_SYMBOLS="$(wildcard $(PKG_SYMVERS_DIR)/*.symvers)")
 

+KERNEL_NOSTDINC_FLAGS = \
+       -nostdinc $(if $(DUMP),, -isystem $(shell $(TARGET_CC) -print-file-name=include))
+

 ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
   KERNEL_MAKE_FLAGS += \
        KERNELRELEASE=$(LINUX_VERSION)
 ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
   KERNEL_MAKE_FLAGS += \
        KERNELRELEASE=$(LINUX_VERSION)