kernel.mk: use the prebuilt binaries of AOSP

[android-x86/device-generic-common.git] / build / tasks / kernel.mk

diff --git a/build/tasks/kernel.mk b/build/tasks/kernel.mk
index abdd312..e8f04b0 100644 (file)
--- a/build/tasks/kernel.mk
+++ b/build/tasks/kernel.mk
@@ -25,13 +25,26 @@ TARGET_KERNEL_CONFIG ?= goldfish_defconfig
 KERNEL_CONFIG_DIR := arch/arm/configs
 endif
 
+ifeq ($(BUILD_KERNEL_WITH_CLANG),true)
+CROSS_COMPILE := x86_64-linux-androidkernel-
+KERNEL_CLANG_CLAGS := CC=clang HOSTCC=clang CLANG_TRIPLE=x86_64-linux-gnu- PATH=$(abspath $(LLVM_PREBUILTS_BASE)/$(BUILD_OS)-x86/$(LLVM_PREBUILTS_VERSION)/bin):$$PATH
+else
 ifeq ($(TARGET_KERNEL_ARCH),x86_64)
+ifeq ($(HOST_OS),darwin)
+CROSS_COMPILE ?= $(abspath prebuilts/gcc/darwin-x86/host/i686-apple-darwin-4.2.1/bin)/i686-apple-darwin11-
+else
 CROSS_COMPILE ?= $(abspath prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.11-4.6/bin)/x86_64-linux-
+endif
 else
 CROSS_COMPILE ?= $(abspath $(TARGET_TOOLS_PREFIX))
 endif
+endif
+
 KBUILD_OUTPUT := $(abspath $(TARGET_OUT_INTERMEDIATES)/kernel)
-mk_kernel := + $(hide) $(MAKE) -C $(KERNEL_DIR) O=$(KBUILD_OUTPUT) ARCH=$(TARGET_ARCH) CROSS_COMPILE="$(abspath $(CC_WRAPPER)) $(CROSS_COMPILE)" $(if $(SHOW_COMMANDS),V=1)
+mk_kernel := + $(hide) $(MAKE) $(if $(filter darwin,$(HOST_OS)),-j$$(sysctl -n hw.ncpu) -l$$(($$(sysctl -n hw.ncpu)+2)),-j$$(nproc) -l$$(($$(nproc)+2))) \
+       -C $(KERNEL_DIR) O=$(KBUILD_OUTPUT) ARCH=$(TARGET_ARCH) CROSS_COMPILE="$(abspath $(CC_WRAPPER)) $(CROSS_COMPILE)" $(if $(SHOW_COMMANDS),V=1) \
+       YACC=$(abspath $(BISON)) LEX=$(abspath $(LEX)) \
+       $(KERNEL_CLANG_CLAGS)
 
 KERNEL_CONFIG_FILE := $(if $(wildcard $(TARGET_KERNEL_CONFIG)),$(TARGET_KERNEL_CONFIG),$(KERNEL_DIR)/$(KERNEL_CONFIG_DIR)/$(TARGET_KERNEL_CONFIG))
 
@@ -45,15 +58,12 @@ KERNEL_DOTCONFIG_FILE := $(KBUILD_OUTPUT)/.config
 KERNEL_ARCH_CHANGED := $(if $(filter 0,$(shell grep -s ^$(if $(filter x86,$(TARGET_KERNEL_ARCH)),\#.)CONFIG_64BIT $(KERNEL_DOTCONFIG_FILE) | wc -l)),FORCE)
 $(KERNEL_DOTCONFIG_FILE): $(KERNEL_CONFIG_FILE) $(wildcard $(TARGET_KERNEL_DIFFCONFIG)) $(KERNEL_ARCH_CHANGED)
        $(hide) mkdir -p $(@D) && cat $(wildcard $^) > $@
+       $(hide) ln -sf ../../../../../../external $(@D)
        $(mk_kernel) oldnoconfig
 
-# bison is needed to build kernel and external modules from source
-BISON := $(HOST_OUT_EXECUTABLES)/bison$(HOST_EXECUTABLE_SUFFIX)
-
 BUILT_KERNEL_TARGET := $(KBUILD_OUTPUT)/arch/$(TARGET_ARCH)/boot/$(KERNEL_TARGET)
-$(INSTALLED_KERNEL_TARGET): $(KERNEL_DOTCONFIG_FILE) | $(ACP) $(BISON)
+$(BUILT_KERNEL_TARGET): $(KERNEL_DOTCONFIG_FILE)
        $(mk_kernel) $(KERNEL_TARGET) $(if $(MOD_ENABLED),modules)
-       $(hide) $(ACP) -fp $(BUILT_KERNEL_TARGET) $@
        $(if $(FIRMWARE_ENABLED),$(mk_kernel) INSTALL_MOD_PATH=$(abspath $(TARGET_OUT)) firmware_install)
 
 ifneq ($(MOD_ENABLED),)
@@ -61,12 +71,12 @@ KERNEL_MODULES_DEP := $(firstword $(wildcard $(TARGET_OUT)/lib/modules/*/modules
 KERNEL_MODULES_DEP := $(if $(KERNEL_MODULES_DEP),$(KERNEL_MODULES_DEP),$(TARGET_OUT)/lib/modules)
 
 ALL_EXTRA_MODULES := $(patsubst %,$(TARGET_OUT_INTERMEDIATES)/kmodule/%,$(TARGET_EXTRA_KERNEL_MODULES))
-$(ALL_EXTRA_MODULES): $(TARGET_OUT_INTERMEDIATES)/kmodule/%: $(INSTALLED_KERNEL_TARGET)
+$(ALL_EXTRA_MODULES): $(TARGET_OUT_INTERMEDIATES)/kmodule/%: $(BUILT_KERNEL_TARGET)
        @echo Building additional kernel module $*
        $(hide) mkdir -p $(@D) && $(ACP) -fr $(EXTRA_KERNEL_MODULE_PATH_$*) $(@D)
        $(mk_kernel) M=$(abspath $@) modules
 
-$(KERNEL_MODULES_DEP): $(INSTALLED_KERNEL_TARGET) $(ALL_EXTRA_MODULES)
+$(KERNEL_MODULES_DEP): $(BUILT_KERNEL_TARGET) $(ALL_EXTRA_MODULES)
        $(hide) rm -rf $(TARGET_OUT)/lib/modules
        $(mk_kernel) INSTALL_MOD_PATH=$(abspath $(TARGET_OUT)) modules_install
        + $(hide) for kmod in $(TARGET_EXTRA_KERNEL_MODULES) ; do \
@@ -88,19 +98,19 @@ endif
 
 installclean: FILES += $(KBUILD_OUTPUT) $(INSTALLED_KERNEL_TARGET)
 
-TARGET_PREBUILT_KERNEL := $(INSTALLED_KERNEL_TARGET)
+TARGET_PREBUILT_KERNEL := $(BUILT_KERNEL_TARGET)
 
 .PHONY: kernel $(if $(KERNEL_ARCH_CHANGED),$(KERNEL_HEADERS_COMMON)/linux/binder.h)
-kernel: $(TARGET_PREBUILT_KERNEL)
+kernel: $(INSTALLED_KERNEL_TARGET)
 
-else
+endif # TARGET_PREBUILT_KERNEL
 
+ifndef LINEAGE_BUILD
 $(INSTALLED_KERNEL_TARGET): $(TARGET_PREBUILT_KERNEL) | $(ACP)
        $(copy-file-to-new-target)
 ifdef TARGET_PREBUILT_MODULES
        mkdir -p $(TARGET_OUT)/lib
        $(hide) cp -r $(TARGET_PREBUILT_MODULES) $(TARGET_OUT)/lib
 endif
-
-endif # TARGET_PREBUILT_KERNEL
+endif # LINEAGE_BUILD
 endif # KBUILD_OUTPUT