include/toplevel.mk: Add xconfig target

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

diff --git a/include/kernel.mk b/include/kernel.mk
index 9c01d5f2c8a211ed5a15a7d71d19ee112754f357..d620fdc0c648c25ba2dcc094281563af8b23206e 100644 (file)
--- a/include/kernel.mk
+++ b/include/kernel.mk
@@ -10,6 +10,12 @@ CHECK:=1
 DUMP:=1
 endif
 
+ifneq ($(SOURCE_DATE_EPOCH),)
+  ifndef DUMP
+    KBUILD_BUILD_TIMESTAMP:=$(shell perl -e 'print scalar gmtime($(SOURCE_DATE_EPOCH))')
+  endif
+endif
+
 ifeq ($(__target_inc),)
   ifndef CHECK
     include $(INCLUDE_DIR)/target.mk
@@ -58,7 +64,7 @@ else
   ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
       LINUX_SITE:=@KERNEL/linux/kernel/v$(word 1,$(subst ., ,$(KERNEL_BASE))).x$(TESTING)
   else
-      LINUX_UNAME_VERSION:=$(strip $(shell cat $(LINUX_DIR)/include/config/kernel.release))
+      LINUX_UNAME_VERSION:=$(strip $(shell cat $(LINUX_DIR)/include/config/kernel.release 2>/dev/null))
   endif
 
   MODULES_SUBDIR:=lib/modules/$(LINUX_UNAME_VERSION)
@@ -79,6 +85,8 @@ else ifneq (,$(findstring $(ARCH) , armeb ))
   LINUX_KARCH := arm
 else ifneq (,$(findstring $(ARCH) , mipsel mips64 mips64el ))
   LINUX_KARCH := mips
+else ifneq (,$(findstring $(ARCH) , powerpc64 ))
+  LINUX_KARCH := powerpc
 else ifneq (,$(findstring $(ARCH) , sh2 sh3 sh4 ))
   LINUX_KARCH := sh
 else ifneq (,$(findstring $(ARCH) , i386 x86_64 ))
@@ -87,6 +95,61 @@ else
   LINUX_KARCH := $(ARCH)
 endif
 
+KERNEL_MAKE = $(MAKE) $(KERNEL_MAKEOPTS)
+
+KERNEL_MAKE_FLAGS := \
+       HOSTCFLAGS="$(HOST_CFLAGS) -Wall -Wmissing-prototypes -Wstrict-prototypes" \
+       CROSS_COMPILE="$(KERNEL_CROSS)" \
+       ARCH="$(LINUX_KARCH)" \
+       KBUILD_HAVE_NLS=no \
+       KBUILD_BUILD_USER="$(call qstrip,$(CONFIG_KERNEL_BUILD_USER))" \
+       KBUILD_BUILD_HOST="$(call qstrip,$(CONFIG_KERNEL_BUILD_DOMAIN))" \
+       KBUILD_BUILD_TIMESTAMP="$(KBUILD_BUILD_TIMESTAMP)" \
+       KBUILD_BUILD_VERSION="0" \
+       HOST_LOADLIBES="-L$(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)) \
+       cmd_syscalls=
+
+ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
+  KERNEL_MAKE_FLAGS += \
+       KERNELRELEASE=$(LINUX_VERSION)
+endif
+
+KERNEL_MAKEOPTS := -C $(LINUX_DIR) $(KERNEL_MAKE_FLAGS)
+
+ifdef CONFIG_USE_SPARSE
+  KERNEL_MAKEOPTS += C=1 CHECK=$(STAGING_DIR_HOST)/bin/sparse
+endif
+
+PKG_EXTMOD_SUBDIRS ?= .
+
+define populate_module_symvers
+       @mkdir -p $(PKG_INFO_DIR)
+       cat /dev/null > $(PKG_INFO_DIR)/$(PKG_NAME).symvers; \
+       for subdir in $(PKG_EXTMOD_SUBDIRS); do \
+               cat $(PKG_INFO_DIR)/*.symvers 2>/dev/null > $(PKG_BUILD_DIR)/$$$$subdir/Module.symvers; \
+       done
+endef
+
+define collect_module_symvers
+       for subdir in $(PKG_EXTMOD_SUBDIRS); do \
+               grep -F $(PKG_BUILD_DIR) $(PKG_BUILD_DIR)/$$$$subdir/Module.symvers >> $(PKG_BUILD_DIR)/Module.symvers.tmp; \
+       done; \
+       sort -u $(PKG_BUILD_DIR)/Module.symvers.tmp > $(PKG_BUILD_DIR)/Module.symvers; \
+       mv $(PKG_BUILD_DIR)/Module.symvers $(PKG_INFO_DIR)/$(PKG_NAME).symvers
+endef
+
+define KernelPackage/hooks
+  ifneq ($(PKG_NAME),kernel)
+    Hooks/Compile/Pre += populate_module_symvers
+    Hooks/Compile/Post += collect_module_symvers
+  endif
+  define KernelPackage/hooks
+  endef
+endef
+
 define KernelPackage/Defaults
   FILES:=
   AUTOLOAD:=
@@ -194,6 +257,7 @@ $(call KernelPackage/$(1)/config)
   endif
 
   $(call KernelPackage/depends)
+  $(call KernelPackage/hooks)
 
   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
     ifneq ($(strip $(FILES)),)