Likely libTest.so is built incorrectly and xxx.hardware.test@1.0-service is
ending up with an incorrect DT_NEEDED entry. Can you show the output of
objdump -x lib/libTest.so and objdump -x
$OUT/vendor/bin/hw/xxx.hardware.test@1.0-service? My guess is that SONAME
in libTest.so is "out/target/product/xxx/obj/lib/libTest.so" and that gets
copied into NEEDED in xxx.hardware.test@1.0-service.
On Thu, Aug 8, 2019 at 9:50 AM Tore Offermann <
tore.offerm...@tara-systems.de> wrote:
> Hello everyone,
>
> I am currently fighting adding a vendor HIDL service with prebuilt
> libraries on Android Pie.
>
> The HIDL service is created in vendor/...
> It depends on some prebuilt libraries.
>
> The prebuilt libraries are added to the Makefile for the service as
> follows:
>
> include $(CLEAR_VARS)
> LOCAL_PROPRIETARY_MODULE := true
> LOCAL_MODULE_SUFFIX := .so
> LOCAL_MODULE_CLASS := SHARED_LIBRARIES
> LOCAL_MODULE := libTest
> LOCAL_SRC_FILES := lib/libTest.so
> #include $(BUILD_PREBUILT)
>
> During android make the library is correctly copied to /vendor/lib and
> after I flash the device the lib is also available in that folder.
>
> I added the lib to the HIDL service makefile:
>
> include $(CLEAR_VARS)
>
> LOCAL_MODULE := xxx.hardware.test@1.0-service
> LOCAL_PROPRIETARY_MODULE := true
> LOCAL_MODULE_CLASS := EXECUTABLES
> LOCAL_MODULE_RELATIVE_PATH := hw
> LOCAL_INIT_RC := xxx.hardware.t...@1.0-service.rc
> LOCAL_CFLAGS := -Werror
>
> LOCAL_SRC_FILES := service.cpp
>
> LOCAL_C_INCLUDES := $(subst ${ANDROID}/,,$(LOCAL_C_INCLUDES))
>
>
> LOCAL_SHARED_LIBRARIES := \
> xxx.hardware.test@1.0 \
> libhidlbase \
> libhidltransport \
> libbase \
> liblog \
> libutils \
> libTest
>
> include $(BUILD_EXECUTABLE)
>
> No issues during make, but after I start the device the linker complains
> with:
>
> 08-08 10:13:34.014 6814 6814 F linker : CANNOT LINK EXECUTABLE
> "/vendor/bin/hw/xxx.hardware.test@1.0-service": library
> "out/target/product/xxx/obj/lib/libTest.so" not found
>
> Not sure how this can happen?
> I would suppose that the linker should check for the lib in /vendor/lib.
>
> Could it have something to do with:
>
> LOCAL_PRELINK_MODULE := false
>
> Thanks in advance!
>
> BR,
> Tore
>
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