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Commit 9ee75859 authored by David Ng's avatar David Ng
Browse files

AndroidKernel.mk: Fix multiple recompile with Android mm macro 



Skip header file generation section if KERNEL_DEFCONFIG
parameter is not defined.  This occurs during Android mm
build of a module (without dependency); and the lack
of KERNEL_DEFCONFIG causes the command line to trigger a
kernel recompile.

Change-Id: I709d8c23691442e537ec6e2b7aebeb010d90a139
Signed-off-by: default avatarDavid Ng <dave@codeaurora.org>
parent 0dea33bc

AndroidKernel.mk

+14 −5
Original line number Diff line number Diff line
@@ -45,6 +45,10 @@ ifeq ($(TARGET_PREBUILT_KERNEL),) 
KERNEL_OUT := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ

KERNEL_CONFIG := $(KERNEL_OUT)/.config



ifeq ($(KERNEL_DEFCONFIG)$(wildcard $(KERNEL_CONFIG)),)

$(error Kernel configuration not defined, cannot build kernel)

else



ifeq ($(TARGET_USES_UNCOMPRESSED_KERNEL),true)

$(info Using uncompressed kernel)

TARGET_PREBUILT_INT_KERNEL := $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/Image
@@ -90,6 +94,7 @@ $(KERNEL_CONFIG): $(KERNEL_OUT) 
			$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) oldconfig; fi



$(TARGET_PREBUILT_INT_KERNEL): $(KERNEL_OUT) $(KERNEL_HEADERS_INSTALL)

	$(hide) echo "Building kernel..."

	$(hide) rm -rf $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/dts

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE)

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) modules
@@ -98,11 +103,14 @@ $(TARGET_PREBUILT_INT_KERNEL): $(KERNEL_OUT) $(KERNEL_HEADERS_INSTALL) 
	$(clean-module-folder)



$(KERNEL_HEADERS_INSTALL): $(KERNEL_OUT)

	$(hide) rm -f ../$(KERNEL_CONFIG)

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_HEADER_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_HEADER_DEFCONFIG)

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_HEADER_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) headers_install

	$(hide) rm -f ../$(KERNEL_CONFIG)

	$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_DEFCONFIG)

	$(hide) if [ ! -z "$(KERNEL_HEADER_DEFCONFIG)" ]; then \

			$(hide) rm -f ../$(KERNEL_CONFIG); \

			$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_HEADER_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_HEADER_DEFCONFIG); \

			$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_HEADER_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) headers_install; fi

	$(hide) if [ "$(KERNEL_HEADER_DEFCONFIG)" != "$(KERNEL_DEFCONFIG)" ]; then \

			echo "Used a different defconfig for header generation"; \

			$(hide) rm -f ../$(KERNEL_CONFIG); \

			$(MAKE) -C kernel O=../$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_DEFCONFIG); fi

	$(hide) if [ ! -z "$(KERNEL_CONFIG_OVERRIDE)" ]; then \

			echo "Overriding kernel config with '$(KERNEL_CONFIG_OVERRIDE)'"; \

			echo $(KERNEL_CONFIG_OVERRIDE) >> $(KERNEL_OUT)/.config; \
@@ -119,3 +127,4 @@ kernelconfig: $(KERNEL_OUT) $(KERNEL_CONFIG) 
	cp $(KERNEL_OUT)/defconfig kernel/arch/$(KERNEL_ARCH)/configs/$(KERNEL_DEFCONFIG)



endif

endif