Android(安卓)framework 编译常见错误

常见错误：
1) 添加系统API或者修改@hide的API后，需要执行

make update-api，然后再make

2) 修改公共api后，需要

make update-api

比较framework/base/api 下的current.xml跟原始x.xml(比如2.2为8.xml 2.3.3为10.xml)，同时修改x.xml

然后make

see build/core/apicheck_msg_current.txt
******************************

You have tried to change the API from what has been previously approved.

To make these errors go away you have two choices:
1) You can add "@hide" javadoc comments to the methods etc. listed in the
errors above.

2) You can update current.txt by executing the following command:
make update-api

To submit the revised current.txt to the main Android repository
you will need approval.
******************************

3)缺失libsndfile_intermediates
make: *** No rule to make target `out/target/product/xxx/obj_arm/STATIC_LIBRARIES/libsndfile_intermediates/export_includes'
needed by `out/target/product/xxx/obj_arm/EXECUTABLES/test-resample_intermediates/import_includes'. Stop.

mmm system/media/audio_utils/

4)系统system分区大小不够
/build/tools/releasetools/build_image.py out/target/product/xxx/system out/target/product/xxx/obj/PACKAGING/systemimage_intermediates/system_image_info.txt out/target/product/xxx/obj/PACKAGING/systemimage_intermediates/system.img || ( echo "Out of space? the tree size of out/target/product/xxx/system is (MB): " 1>&2 ; du -sm out/target/product/xxx/system 1>&2; echo "The max is $(( 2147483648 / 1048576 )) MB." 1>&2 ; mkdir -p out/dist; cp out/target/product/xxx/installed-files.txt out/dist/installed-files-rescued.txt; exit 1 )
Running: mkuserimg.sh -s out/target/product/xxx/system out/target/product/xxx/obj/PACKAGING/systemimage_intermediates/system.img ext4 system 2147483648 out/target/product/xxx/root/file_contexts
make_ext4fs -s -T -1 -S out/target/product/xxx/root/file_contexts -l 2147483648 -a system out/target/product/xxx/obj/PACKAGING/systemimage_intermediates/system.img out/target/product/xxx/system
Creating filesystem with parameters:
Size: 2147483648
Block size: 4096
Blocks per group: 32768
Inodes per group: 8192
Inode size: 256
Journal blocks: 8192
Label:
Blocks: 524288
Block groups: 16
Reserved block group size: 127
error: ext4_allocate_best_fit_partial: failed to allocate 2461 blocks out of space?
error: failed to build out/target/product/xxx/obj/PACKAGING/systemimage_intermediates/system.img from out/target/product/xxx/system
Out of space? the tree size of out/target/product/xxx/system is (MB):
2031 out/target/product/xxx/system
The max is 2048 MB.
make: *** [out/target/product/xxx/obj/PACKAGING/systemimage_intermediates/system.img] Error 1

#### make failed to build some targets (01:47:21 (hh:mm:ss)) ####

/work/xxxx/device/mediatek/build/build/tools/ptgen/xxxxx/partition_table_xxx.xls

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