Android make清除命令

Android make

本文基于Android5.1.1，其他版本仅供参考

1. make clean

伪目标clean在build/core/main.mk中定义如下:

.PHONY: clean
clean:
         @rm -rf $(OUT_DIR)/*
         @echo "Entire build directory removed."

执行make clean将会会删除out/目录下所有内容。

2. make clobber

伪目标clobber在build/core/main.mk中定义如下:

 .PHONY: clobber
clobber: clean

执行make clobber效果等同于make clean，也是删除out/目录下所有内容。

3. make dataclean

伪目标dataclean在bulid/core/cleanbuild.mk中定义如下:

.PHONY: dataclean
dataclean: FILES := $(dataclean_files)
dataclean:
         $(hide) rm -rf $(FILES)
         @echo "Deleted emulator userdata images."

执行make dataclean将会删除dataclean_files,dataclean_files定义如下：

# The files/dirs to delete during a dataclean, which removes any files
# in the staging and emulator data partitions.
dataclean_files := \
         $(PRODUCT_OUT)/data/* \
         $(PRODUCT_OUT)/data-qemu/* \
         $(PRODUCT_OUT)/userdata-qemu.img

PRODUCT_OUT展开为out/target/product/$(TARGET_DEVICE)，根据注释，执行make dataclean将会删除out目录下对应板级目录中data分区相关文件。

4. make installclean

伪目标installclean在bulid/core/cleanbuild.mk中定义如下：

.PHONY: installclean
installclean: FILES := $(installclean_files)
installclean: dataclean
         $(hide) rm -rf $(FILES)
         @echo "Deleted images and staging directories."

执行make installclean将会删除installclean_files,installclean_files定义如下：

#
# installclean logic
#
# The files/dirs to delete during an installclean.  This includes the
# non-common APPS directory, which may contain the wrong resources.
#
# Deletes all of the files that change between different build types,
# like "make user" vs. "make sdk".  This lets you work with different
# build types without having to do a full clean each time.  E.g.:
#
#     $ make -j8 all
#     $ make installclean
#     $ make -j8 user
#     $ make installclean
#     $ make -j8 sdk
#
installclean_files := \
         $(HOST_OUT)/obj/NOTICE_FILES \
         $(HOST_OUT)/sdk \
         $(PRODUCT_OUT)/*.img \
         $(PRODUCT_OUT)/*.ini \
         $(PRODUCT_OUT)/*.txt \
         $(PRODUCT_OUT)/*.xlb \
         $(PRODUCT_OUT)/*.zip \
         $(PRODUCT_OUT)/kernel \
         $(PRODUCT_OUT)/data \
         $(PRODUCT_OUT)/skin \
         $(PRODUCT_OUT)/obj/APPS \
         $(PRODUCT_OUT)/obj/NOTICE_FILES \
         $(PRODUCT_OUT)/obj/PACKAGING \
         $(PRODUCT_OUT)/recovery \
         $(PRODUCT_OUT)/root \
         $(PRODUCT_OUT)/system \
         $(PRODUCT_OUT)/vendor \
         $(PRODUCT_OUT)/oem \
         $(PRODUCT_OUT)/userfastboot \
         $(PRODUCT_OUT)/dex_bootjars \
         $(PRODUCT_OUT)/obj/JAVA_LIBRARIES \
         $(PRODUCT_OUT)/obj/FAKE \
         $(PRODUCT_OUT)/obj/EXECUTABLES/adbd_intermediates \
         $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libfs_mgr_intermediates \
         $(PRODUCT_OUT)/obj/EXECUTABLES/init_intermediates \
         $(PRODUCT_OUT)/obj/ETC/mac_permissions.xml_intermediates \
         $(PRODUCT_OUT)/obj/ETC/sepolicy_intermediates \
         $(PRODUCT_OUT)/obj/ETC/init.environ.rc_intermediates

在切换编译目标时需要执行make installclean，用以清除之前编译生成的文件。