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Android 之永乐大典

article 2025/1/16 5:11:39

DexOpt

Android DexOpt前世今生：参考https://blog.csdn.net/dengtonglong/article/details/140828809

1 dex_preopt_check导致编译报错

问题背景

高通T项目，更新google mainline到6月份，编译nogms版本出现如下异常

报错日志

[2024-12-14T10:08:45.533Z] build/make/core/tasks/dex_preopt_check.mk:13: warning:  Missing compilation artifacts. Dexpreopting is not working for some system server jars 
[2024-12-14T10:08:45.533Z] Offending entries:
[2024-12-14T10:08:45.533Z] system/framework/oat/arm64/apex@com.android.adservices@javalib@service-adservices.jar@classes.odex
[2024-12-14T10:08:45.534Z] system/framework/oat/arm64/apex@com.android.adservices@javalib@service-adservices.jar@classes.vdex
[2024-12-14T10:08:45.534Z] system/framework/oat/arm64/apex@com.android.adservices@javalib@service-sdksandbox.jar@classes.odex
[2024-12-14T10:08:45.534Z] system/framework/oat/arm64/apex@com.android.adservices@javalib@service-sdksandbox.jar@classes.vdex
[2024-12-14T10:08:45.534Z] system/framework/oat/arm64/apex@com.android.appsearch@javalib@service-appsearch.jar@classes.odex
[2024-12-14T10:08:45.534Z] system/framework/oat/arm64/apex@com.android.appsearch@javalib@service-appsearch.jar@classes.vdex
[2024-12-14T10:08:45.534Z] system/framework/oat/arm64/apex@com.android.media@javalib@service-media-s.jar@classes.odex
[2024-12-14T10:08:45.534Z] system/framework/oat/arm64/apex@com.android.media@javalib@service-media-s.jar@classes.vdex
[2024-12-14T10:08:45.534Z] system/framework/oat/arm64/apex@com.android.os.statsd@javalib@service-statsd.jar@classes.odex
[2024-12-14T10:08:45.534Z] system/framework/oat/arm64/apex@com.android.os.statsd@javalib@service-statsd.jar@classes.vdex
[2024-12-14T10:08:45.534Z] system/framework/oat/arm64/apex@com.android.tethering@javalib@service-connectivity.jar@classes.odex
[2024-12-14T10:08:45.534Z] system/framework/oat/arm64/apex@com.android.tethering@javalib@service-connectivity.jar@classes.vdex
[2024-12-14T10:08:45.534Z] In file included from build/make/core/main.mk:1479:
[2024-12-14T10:08:45.534Z] In file included from build/make/core/Makefile:6977:
[2024-12-14T10:08:45.534Z] build/make/core/tasks/dex_preopt_check.mk:13: error: Build failed.
[2024-12-14T10:08:45.534Z] 18:08:45 ckati failed with: exit status 1

问题分析

如下编译脚本逻辑，这里通过DISABLE_DEXPREORT_CHECK宏控来失能是否进行DEXPREOPT优化检测，如果为true则失能，默认需要进行优化检测，通过过滤所有PRODUCT_PACKAGES安装的应用，即先过滤ALL_DEFAULT_INSTALLED_MODULES宏控指定列表里面的应用，然后在过滤DEXPREOPT_SYSTEMSERVER_ARTIFACTS列表中指定的需要dexpreort优化的系统jar。

/system/build/make/core/tasks/dex_preopt_check.mk
# Checks that some critical dexpreopt output files are installed.
# Inputs:
# DISABLE_DEXPREOPT_CHECK: True if the check should be disabled.
# PRODUCT_PACKAGES: The list of packages to be installed for the product.
# ALL_DEFAULT_INSTALLED_MODULES: The full list of modules going to be installed.
# DEXPREOPT_SYSTEMSERVER_ARTIFACTS: The list of compilation artifacts of system server jars, which
# 	is generated by Soong in dexpreopt_check.go.
ifneq (true,$(DISABLE_DEXPREOPT_CHECK))
  # Skip the check if the system server is not installed for the product.
  ifneq (,$(filter services,$(PRODUCT_PACKAGES)))
    $(call maybe-print-list-and-error,\
      $(filter-out $(ALL_DEFAULT_INSTALLED_MODULES),$(DEXPREOPT_SYSTEMSERVER_ARTIFACTS)),\
      Missing compilation artifacts. Dexpreopting is not working for some system server jars \
    )
  endif
endif

出现上面报错可能的原因，google官方网站已经介绍：