在android R版本全編譯時，遇到編譯打包super.img時報錯，這里介紹一下這種問題如何定位原因和解決，主要是描述一下分析的思路。

錯誤日志如下：

out/target/product/tt/obj/PACKAGING/check-all-partition-sizes_intermediates/misc_info.txt )" Traceback (most recent call last):File "/home/test/tt_r_temp/android/out/host/linux-x86/bin/check_partition_sizes/internal/stdlib/runpy.py", line 174, in _run_module_as_mainFile "/home/test/tt_r_temp/android/out/host/linux-x86/bin/check_partition_sizes/internal/stdlib/runpy.py", line 72, in _run_codeFile "/home/test/tt_r_temp/android/out/host/linux-x86/bin/check_partition_sizes/__main__.py", line 12, in <module>File "/home/test/tt_r_temp/android/out/host/linux-x86/bin/check_partition_sizes/internal/stdlib/runpy.py", line 174, in _run_module_as_mainFile "/home/test/tt_r_temp/android/out/host/linux-x86/bin/check_partition_sizes/internal/stdlib/runpy.py", line 72, in _run_codeFile "/home/test/tt_r_temp/android/out/host/linux-x86/bin/check_partition_sizes/check_partition_sizes.py", line 271, in <module>File "/home/test/tt_r_temp/android/out/host/linux-x86/bin/check_partition_sizes/check_partition_sizes.py", line 265, in mainFile "/home/test/tt_r_temp/android/out/host/linux-x86/bin/check_partition_sizes/check_partition_sizes.py", line 253, in CheckPartitionSizesFile "/home/test/tt_r_temp/android/out/host/linux-x86/bin/check_partition_sizes/check_partition_sizes.py", line 245, in RunFile "/home/test/tt_r_temp/android/out/host/linux-x86/bin/check_partition_sizes/check_partition_sizes.py", line 242, in _CheckAllPartitionSizesFile "/home/test/tt_r_temp/android/out/host/linux-x86/bin/check_partition_sizes/check_partition_sizes.py", line 61, in CheckLe RuntimeError: sum of sizes of ['youroem_dynamic_partitions'] is greater than BOARD_SUPER_PARTITION_SIZE / 2: 2147483648 4290772992 == 4290772992 > 2147483648 == 2147483648 [100% 312/312] Target super fs image for debug: out/target/product/tt/super.img 2021-07-12 10:20:00 - build_super_image.py - INFO : Building super image from info dict... 2021-07-12 10:20:00 - sparse_img.py - INFO : Total of 217749 4096-byte output blocks in 20 input chunks.

核心錯誤在句日志
RuntimeError: sum of sizes of [‘youroem_dynamic_partitions’] is greater than BOARD_SUPER_PARTITION_SIZE / 2: 2147483648
4290772992 == 4290772992 > 2147483648 == 2147483648
初步看起來是size比較的問題，追一下python腳本代碼，從日志錯誤來看是調用的check_partition_sizes.py腳本，去build目錄下find一下，找到后打開check_partition_sizes.py，找到報錯的行號

if "super_partition_size" in info_dict:group_size_list = [int(info_dict.get("super_{}_group_size".format(group), 0)) for group in groups]sum_size = Expression("sum of sizes of {}".format(groups),"+".join(str(size) for size in group_size_list),sum(group_size_list))max_size = Expression("BOARD_SUPER_PARTITION_SIZE{}".format(size_limit_suffix),int(info_dict["super_partition_size"]) // num_slots)sum_size.CheckLe(max_size)

查看一下max_size的定義和sum_size的來源，基本上就明白咋回事了，就是指在打開A/B配置的情況下，sum_size不能大于max_size的一半，對應到板卡makefile中的BOARD_SUPER_PARTITION_SIZE值，最后編譯到了out產物中的misc_info.txt中，打包super時最后會檢查一下這個size
到這里就基礎明白跟BOARD_SUPER_PARTITION_SIZE有關了，全局查看一下發現走到8GB的那個配置了，導致的報錯，初步修改是打開ENABLE_VIRTUAL_AB宏，解決了當前的報錯，先分析到這里吧。

ifeq ($(ENABLE_AB), true)ifeq ($(ENABLE_VIRTUAL_AB), true)BOARD_SUPER_PARTITION_SIZE := 4294967296elseBOARD_SUPER_PARTITION_SIZE := 8589934592endifTARGET_RECOVERY_FSTAB := device/youroem/test/recovery_AB_dynamic_partition.fstab elseBOARD_SUPER_PARTITION_SIZE := 4294967296TARGET_RECOVERY_FSTAB := device/youroem/test/recovery_non-AB_dynamic_partition.fstab endif

總結

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