android 5.0 64bit系统加载库文件失败问题浅析

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原创最新推荐文章于 2026-08-26 15:09:25 发布 1.4w 阅读 AI 写同款· GEO 优化 ›

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最近公司的一个项目使用android 5.0 64 bit平台，相对以前版本，除了android 5.0 有很大变动之外，64 bit系统和32 bit系统也存在很多差异性。

目前碰到的问题就是以前在32位上的so库文件，到64 位系统上不能加载的问题。首先来看一下相关log信息

logcat信息：

01-01 08:00:09.322 D/SensorService( 1606): nuSensorService starting...
01-01 08:00:09.323 E/HAL ( 1606): load: module=/system/lib64/hw/sensors.default.so
01-01 08:00:09.323 E/HAL ( 1606): dlopen failed: "/system/lib64/hw/sensors.default.so" is 32-bit instead of 64-bit
01-01 08:00:09.323 E/SensorService( 1606): couldn't load sensors module (Invalid argument)

ps信息：

USER PID PPID VSIZE RSS WCHAN PC NAME

root      1172 1     1254940 56612 ffffffff 8e579300 S zygote64
root      1173 1     940684 49112 ffffffff f75da8a8 S zygote
shell     1174 1     4136   956   000b45f4 9bcef2e8 S /system/bin/sh

system    1606 1172 1411680 87808 ffffffff 8e579b88 S system_server
u0_a11    1730 1172 1298048 43684 ffffffff 8e579b88 S com.android.systemui
root      1742 1174 4136   976   000b45f4 8d71b2e8 S sh

从上面的log信息我们可以得出如下信息：

1. 64 bit 系统启动后，会运行两个进程zygote64 ，zygote ，对应的进程号为1172 和1173

2.sysrem_server进程由zygote64 启动，它的进程号为1606

3.logcat 信息里面提示的错误信息，是在sysrem_server进程调用的，也就是说sensors.default.so库是在进程sysrem_server中去加载的。

综合上面信息，不难发现，sysrem_server是由zygote64启动的，所以加载的so库也必须是64bit类型。否则就会报如下错误

dlopen failed: "/system/lib64/hw/sensors.default.so" is 32-bit instead of 64-bit

为了解决这个问题，就必须把原来so文件的源码，放到64 bit的编译环境下编译。

首先，我直接复制源码到64 bit的android源码下编译，没有做任何修改，编译信息如下，

build/core/shared_library.mk:12: sensors.default: LOCAL_MODULE_PATH for shared libraries is unsupported in multiarch builds, use LOCAL_MODULE_RELATIVE_PATH instead
Import includes file: out/target/product/coconut/obj_arm/SHARED_LIBRARIES/sensors.default_intermediates/import_includes
target thumb C: sensors.default_32 <= external/tcl_sensors/sensors.c
external/tcl_sensors/sensors.c: In function 'sensors__get_sensors_list':
external/tcl_sensors/sensors.c:203:63: warning: unused parameter 'module' [-Wunused-parameter]
static int sensors__get_sensors_list(struct sensors_module_t* module,
^
target SharedLib: sensors.default_32 (out/target/product/coconut/obj_arm/SHARED_LIBRARIES/sensors.default_intermediates/LINKED/sensors.default.so)
Import includes file: out/target/product/coconut/obj/SHARED_LIBRARIES/sensors.default_intermediates/import_includes
target C: sensors.default <= external/tcl_sensors/sensors.c
external/tcl_sensors/sensors.c: In function 'sensors__get_sensors_list':
external/tcl_sensors/sensors.c:203:63: warning: unused parameter 'module' [-Wunused-parameter]
static int sensors__get_sensors_list(struct sensors_module_t* module,
^
target SharedLib: sensors.default (out/target/product/coconut/obj/SHARED_LIBRARIES/sensors.default_intermediates/LINKED/sensors.default.so)
target Symbolic: sensors.default (out/target/product/coconut/symbols/system/lib64/hw/sensors.default.so)
Export includes file: external/tcl_sensors/Android.mk -- out/target/product/coconut/obj/SHARED_LIBRARIES/sensors.default_intermediates/export_includes
target Strip: sensors.default (out/target/product/coconut/obj/lib/sensors.default.so)
Export includes file: external/tcl_sensors/Android.mk -- out/target/product/coconut/obj_arm/SHARED_LIBRARIES/sensors.default_intermediates/export_includes
target Strip: sensors.default_32 (out/target/product/coconut/obj_arm/lib/sensors.default.so)
Install: out/target/product/coconut/system/lib64/hw/sensors.default.so

在/system/lib64/hw/目录下面生成了库文件sensors.default.so，然后我把该库文件替换到终端里面，既然发现还是会出现和上面一样的错误，找不到so库。

在网上查了一下资料，很少相关介绍，这个时候感觉没思路了，找不到问题突破点。

后来再编译操作了一遍，发现了一条很重要的信息提示，

build/core/shared_library.mk:12: sensors.default: LOCAL_MODULE_PATH for shared libraries is unsupported in multiarch builds, use LOCAL_MODULE_RELATIVE_PATH instead

这个信息提示已经说得很明白，然后我查看了一下android.mk文件，果断的把LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw语句改成了

LOCAL_MODULE_RELATIVE_PATH := hw，然后再重新编译。log如下

Import includes file: out/target/product/coconut/obj/SHARED_LIBRARIES/sensors.default_intermediates/import_includes
target C: sensors.default <= external/tcl_sensors/sensors.c
external/tcl_sensors/sensors.c: In function 'sensors__get_sensors_list':
external/tcl_sensors/sensors.c:203:63: warning: unused parameter 'module' [-Wunused-parameter]
static int sensors__get_sensors_list(struct sensors_module_t* module,
^
target SharedLib: sensors.default (out/target/product/coconut/obj/SHARED_LIBRARIES/sensors.default_intermediates/LINKED/sensors.default.so)
target Symbolic: sensors.default (out/target/product/coconut/symbols/system/lib64/hw/sensors.default.so)
Export includes file: external/tcl_sensors/Android.mk -- out/target/product/coconut/obj/SHARED_LIBRARIES/sensors.default_intermediates/export_includes
target Strip: sensors.default (out/target/product/coconut/obj/lib/sensors.default.so)
Install: out/target/product/coconut/system/lib64/hw/sensors.default.so
Import includes file: out/target/product/coconut/obj_arm/SHARED_LIBRARIES/sensors.default_intermediates/import_includes
target thumb C: sensors.default_32 <= external/tcl_sensors/sensors.c
external/tcl_sensors/sensors.c: In function 'sensors__get_sensors_list':
external/tcl_sensors/sensors.c:203:63: warning: unused parameter 'module' [-Wunused-parameter]
static int sensors__get_sensors_list(struct sensors_module_t* module,
^
target SharedLib: sensors.default_32 (out/target/product/coconut/obj_arm/SHARED_LIBRARIES/sensors.default_intermediates/LINKED/sensors.default.so)
target Symbolic: sensors.default_32 (out/target/product/coconut/symbols/system/lib/hw/sensors.default.so)
Export includes file: external/tcl_sensors/Android.mk -- out/target/product/coconut/obj_arm/SHARED_LIBRARIES/sensors.default_intermediates/export_includes
target Strip: sensors.default_32 (out/target/product/coconut/obj_arm/lib/sensors.default.so)
Install: out/target/product/coconut/system/lib/hw/sensors.default.so