[android-porting] Running car-emulator (Android Automotive)

[Kiran Rao]

I'm trying to build Android Automotive from source. I'm able to
successfully build it using the following commands:

repo init -u https://android.googlesource.com/platform/manifest -b
android-8.0.0_r11
source build/envsetup.sh
lunch car_emu_x86_64-userdebug
make -j8 V=1 &>> make.log

My question is how do I run the emulator? After googling and going through
some stackoverflow posts, I came across this:

First, I set an env variable in the command-line (The emulator uses this to
determine which emulator to launch)

export ANDROID_PRODUCT_OUT=/path/to/build_root

Next, I created a file car-emulator.sh and put this in it
#!/usr/bin/env bash

ANDROID_BUILD_OUT=/path/to/build_root/out
PREBUILT=/path/to/build_root/prebuilts
EMULATOR_OUT=${ANDROID_BUILD_OUT}/target/product/car-x86_64

${PREBUILT}/android-emulator/linux-x86_64/emulator \
-sysdir ${EMULATOR_OUT} \
-system ${EMULATOR_OUT}/system.img \
-ramdisk ${EMULATOR_OUT}/ramdisk.img \
-data ${EMULATOR_OUT}/userdata.img \
-kernel ${PREBUILT}/qemu-kernel/x86_64/kernel-qemu \
-scale 0.7 \
-memory 512 \
-partition-size 1024

I also tried to download the relevant (darwin-x86_64) files from the build
machine to my Mac laptop and tried running there. The emulator starts but
crashes immediately.

Also, I see that the CarService.apk has been generated. Is it sufficient to
install this APK on a device for it to work? Does it depend on anything
else?

[Mayank Agarwal]

Hi Kiran, were you able to find any solution to this?

Post by Kiran Rao
I'm trying to build Android Automotive from source. I'm able to
repo init -u https://android.googlesource.com/platform/manifest -b
android-8.0.0_r11
source build/envsetup.sh
lunch car_emu_x86_64-userdebug
make -j8 V=1 &>> make.log
My question is how do I run the emulator? After googling and going through
First, I set an env variable in the command-line (The emulator uses this
to determine which emulator to launch)
export ANDROID_PRODUCT_OUT=/path/to/build_root
Next, I created a file car-emulator.sh and put this in it
#!/usr/bin/env bash
ANDROID_BUILD_OUT=/path/to/build_root/out
PREBUILT=/path/to/build_root/prebuilts
EMULATOR_OUT=${ANDROID_BUILD_OUT}/target/product/car-x86_64
${PREBUILT}/android-emulator/linux-x86_64/emulator \
-sysdir ${EMULATOR_OUT} \
-system ${EMULATOR_OUT}/system.img \
-ramdisk ${EMULATOR_OUT}/ramdisk.img \
-data ${EMULATOR_OUT}/userdata.img \
-kernel ${PREBUILT}/qemu-kernel/x86_64/kernel-qemu \
-scale 0.7 \
-memory 512 \
-partition-size 1024
I also tried to download the relevant (darwin-x86_64) files from the build
machine to my Mac laptop and tried running there. The emulator starts but
crashes immediately.
Also, I see that the CarService.apk has been generated. Is it sufficient
to install this APK on a device for it to work? Does it depend on anything
else?

[Renjith Rajagopal]

https://android-review.googlesource.com/c/platform/external/adt-infra/+/502579/
Google is working on it to release Car emulator officially.

I could build and run Emulator in x86 version,but not with lunch
car_emu_x86_64-userdebug instead aosp_x86_64 configuration.
But still need few hacks to make it up and running.

Post by Kiran Rao
I'm trying to build Android Automotive from source. I'm able to
repo init -u https://android.googlesource.com/platform/manifest -b
android-8.0.0_r11
source build/envsetup.sh
lunch car_emu_x86_64-userdebug
make -j8 V=1 &>> make.log
My question is how do I run the emulator? After googling and going through
First, I set an env variable in the command-line (The emulator uses this
to determine which emulator to launch)
export ANDROID_PRODUCT_OUT=/path/to/build_root
Next, I created a file car-emulator.sh and put this in it
#!/usr/bin/env bash
ANDROID_BUILD_OUT=/path/to/build_root/out
PREBUILT=/path/to/build_root/prebuilts
EMULATOR_OUT=${ANDROID_BUILD_OUT}/target/product/car-x86_64
${PREBUILT}/android-emulator/linux-x86_64/emulator \
-sysdir ${EMULATOR_OUT} \
-system ${EMULATOR_OUT}/system.img \
-ramdisk ${EMULATOR_OUT}/ramdisk.img \
-data ${EMULATOR_OUT}/userdata.img \
-kernel ${PREBUILT}/qemu-kernel/x86_64/kernel-qemu \
-scale 0.7 \
-memory 512 \
-partition-size 1024
I also tried to download the relevant (darwin-x86_64) files from the build
machine to my Mac laptop and tried running there. The emulator starts but
crashes immediately.
Also, I see that the CarService.apk has been generated. Is it sufficient
to install this APK on a device for it to work? Does it depend on anything
else?

[Nilesh Khairnar]

Hi Renjith,

I am able to build emulator for x86 version using aosp_x86_64 configuration.

*>>But still need few hacks to make it up and running.*
Could you please share steps for running this emulator?

Regards,
Nilesh

Post by Renjith Rajagopal
https://android-review.googlesource.com/c/platform/external/adt-infra/+/502579/
Google is working on it to release Car emulator officially.
I could build and run Emulator in x86 version,but not with lunch
car_emu_x86_64-userdebug instead aosp_x86_64 configuration.
But still need few hacks to make it up and running.