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      1 # Copyright 2009 The Android Open Source Project
      2 
      3 LOCAL_PATH := $(call my-dir)
      4 
      5 updater_src_files := \
      6 	install.c \
      7 	updater.c
      8 
      9 #
     10 # Build a statically-linked binary to include in OTA packages
     11 #
     12 include $(CLEAR_VARS)
     13 
     14 # Build only in eng, so we don't end up with a copy of this in /system
     15 # on user builds.  (TODO: find a better way to build device binaries
     16 # needed only for OTA packages.)
     17 LOCAL_MODULE_TAGS := eng
     18 
     19 LOCAL_SRC_FILES := $(updater_src_files)
     20 
     21 ifeq ($(TARGET_USERIMAGES_USE_EXT4), true)
     22 LOCAL_CFLAGS += -DUSE_EXT4
     23 LOCAL_C_INCLUDES += system/extras/ext4_utils
     24 LOCAL_STATIC_LIBRARIES += libext4_utils libz
     25 endif
     26 
     27 LOCAL_STATIC_LIBRARIES += $(TARGET_RECOVERY_UPDATER_LIBS) $(TARGET_RECOVERY_UPDATER_EXTRA_LIBS)
     28 LOCAL_STATIC_LIBRARIES += libapplypatch libedify libmtdutils libminzip libz
     29 LOCAL_STATIC_LIBRARIES += libmincrypt libbz
     30 LOCAL_STATIC_LIBRARIES += libminelf
     31 LOCAL_STATIC_LIBRARIES += libcutils libstdc++ libc
     32 LOCAL_C_INCLUDES += $(LOCAL_PATH)/..
     33 
     34 # Each library in TARGET_RECOVERY_UPDATER_LIBS should have a function
     35 # named "Register_<libname>()".  Here we emit a little C function that
     36 # gets #included by updater.c.  It calls all those registration
     37 # functions.
     38 
     39 # Devices can also add libraries to TARGET_RECOVERY_UPDATER_EXTRA_LIBS.
     40 # These libs are also linked in with updater, but we don't try to call
     41 # any sort of registration function for these.  Use this variable for
     42 # any subsidiary static libraries required for your registered
     43 # extension libs.
     44 
     45 inc := $(call intermediates-dir-for,PACKAGING,updater_extensions)/register.inc
     46 
     47 # During the first pass of reading the makefiles, we dump the list of
     48 # extension libs to a temp file, then copy that to the ".list" file if
     49 # it is different than the existing .list (if any).  The register.inc
     50 # file then uses the .list as a prerequisite, so it is only rebuilt
     51 # (and updater.o recompiled) when the list of extension libs changes.
     52 
     53 junk := $(shell mkdir -p $(dir $(inc));\
     54 	        echo $(TARGET_RECOVERY_UPDATER_LIBS) > $(inc).temp;\
     55 	        diff -q $(inc).temp $(inc).list 2>/dev/null || cp -f $(inc).temp $(inc).list)
     56 
     57 $(inc) : libs := $(TARGET_RECOVERY_UPDATER_LIBS)
     58 $(inc) : $(inc).list
     59 	$(hide) mkdir -p $(dir $@)
     60 	$(hide) echo "" > $@
     61 	$(hide) $(foreach lib,$(libs),echo "extern void Register_$(lib)(void);" >> $@;)
     62 	$(hide) echo "void RegisterDeviceExtensions() {" >> $@
     63 	$(hide) $(foreach lib,$(libs),echo "  Register_$(lib)();" >> $@;)
     64 	$(hide) echo "}" >> $@
     65 
     66 $(call intermediates-dir-for,EXECUTABLES,updater)/updater.o : $(inc)
     67 LOCAL_C_INCLUDES += $(dir $(inc))
     68 
     69 LOCAL_MODULE := updater
     70 
     71 LOCAL_FORCE_STATIC_EXECUTABLE := true
     72 
     73 include $(BUILD_EXECUTABLE)
     74