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 cb9b22d..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))
 
@@ -45,13 +58,11 @@ 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/$(KERNEL_TARGET)
-$(BUILT_KERNEL_TARGET): $(KERNEL_DOTCONFIG_FILE) | $(BISON)
+$(BUILT_KERNEL_TARGET): $(KERNEL_DOTCONFIG_FILE)
        $(mk_kernel) $(KERNEL_TARGET) $(if $(MOD_ENABLED),modules)
        $(if $(FIRMWARE_ENABLED),$(mk_kernel) INSTALL_MOD_PATH=$(abspath $(TARGET_OUT)) firmware_install)