Where is the "INSTALLED_BOOTLOADER_MODULE" used in the building system.

[zhang biao]

Hi,

I am trying to understand the building system.

build/core/Makefile

ifneq ($(strip $(TARGET_NO_BOOTLOADER)),true)

  INSTALLED_BOOTLOADER_MODULE := $(PRODUCT_OUT)/bootloader

  ifeq ($(strip $(TARGET_BOOTLOADER_IS_2ND)),true)

    INSTALLED_2NDBOOTLOADER_TARGET := $(PRODUCT_OUT)/2ndbootloader

  else

    INSTALLED_2NDBOOTLOADER_TARGET :=

  endif

else

  INSTALLED_BOOTLOADER_MODULE :=

  INSTALLED_2NDBOOTLOADER_TARGET :=

endif # TARGET_NO_BOOTLOADER

The variable INSTALLED_BOOTLOADER_MODULE is assigned the value here, but where is it used? I grep the entire source code, failed to find other match string with it. 

Would you please tell me the trick?

Thanks,

Jerry