ninja: error: unknown target 'chrome_public_apk'

[Zelong]

I try to build a full browser of Chromimum for Android, but fails.

zelong@zelong-ThinkPad-T430:/media/zelong/2828a0f1-cc41-4428-854d-a7a18c59f5c6/Code/chromium/src$
autoninja -C out/Default chrome_public_apk
ninja: Entering directory `out/Default'
ninja: error: unknown target 'chrome_public_apk'

Anyone knows how to fix it?

[Zelong]

[Daniel Bratell]

That target only exists if you build for Android so my first guess is
that you are building for the host platform (Linux).

Make sure you set the appropriate flags as documented in
https://chromium.googlesource.com/chromium/src/+/master/docs/android_build_instructions.md#Setting-up-the-build
and then regenerate the ninja files (which should happen automatically
but look out for the messages about it).

If that is not it, I can only recommend going through the instructions
and make sure you did not miss anything.

/Daniel

[Xianzhu Wang]

Please check the following in your directory:

1. Does .gclient file (in the directory above src) contain "target_os = [ 'android' ]"?

2. Does your out/Default/args.gn contain "target_os = "android""?

If either is no, you probably missed some steps in the instructions. You can fix this by adding the lines into the files and updating the checkout.

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[Zelong]

Hi, Daniel

Good to hear you again.

It works.  I remembered I set the target_os and target_cpu, but it somehow did not work.
That may be the reason why I failed.

I fixed it like this:
==========================================================================================================================================

zelong@zelong-ThinkPad-T430:/media/zelong/2828a0f1-cc41-4428-854d-a7a18c59f5c6/Code/chromium/src$ autoninja -C out/Default chrome_public_apk
ninja: Entering directory `out/Default'

[1/1] Regenerating ninja files

ninja: error: unknown target 'chrome_public_apk'

zelong@zelong-ThinkPad-T430:/media/zelong/2828a0f1-cc41-4428-854d-a7a18c59f5c6/Code/chromium/src$ gn args out/Default

# Build arguments go here.
# See "gn args <out_dir> --list" for available build arguments.

target_os = "android"
target_cpu = "arm64"

Waiting for editor on "/media/zelong/2828a0f1-cc41-4428-854d-a7a18c59f5c6/Code/chromium/src/out/Default/args.gn"...
Generating files...
Done. Made 28904 targets from 1842 files in 26823ms

zelong@zelong-ThinkPad-T430:/media/zelong/2828a0f1-cc41-4428-854d-a7a18c59f5c6/Code/chromium/src$ autoninja -C out/Default chrome_public_apk
ninja: Entering directory `out/Default'

[1/1] Regenerating ninja files

==========================================================================================================================================

And it began to build normally.

  

[Zelong]

Oh, Xianzhu

Almost missed your reply. Yes, you are also right. Thanks, I guess the reason is that I do not contain "target_os = "android"" under out/Default/args.gn

[Satish Nada]

Hello Respected,
We tried to build separate chromium build APK for android using Android studio for ARM 64 we able run project build but its not working on my Android device (ARM 64 ABI) its give error as i have attached images 

We followed below steps 
https://chromium.googlesource.com/chromium/src/+/master/docs/android_build_instructions.md

For build apk we user this
autoninja -C out/Default chrome_public_apk

We used below GN files for build project for ABI ARM64 configuration.

target_os = "android"

target_cpu = "arm64"

is_debug = false

android_channel = "stable"

is_official_build = true

is_component_build = false

is_clang = true

symbol_level = 0

blink_symbol_level=0

use_unofficial_version_number = false

v8_use_external_startup_data = true

fieldtrial_testing_like_official_build = true

icu_use_data_file = false

ffmpeg_branding = "Chrome"

proprietary_codecs = true

multidex_in_release = true

exclude_unwind_tables = true

The below is Android Gradle Configuration for NDK 

For ARM 64 
ndk {
       abiFilters 'arm64-v8a'
}

and added SO files in 'arm64-v8a' directory under jniLibs directory

as below files name 

jniLibs/arm64-v8a

                    libchrome.so

                    libchrome__combined.so

                    libchrome_crashpad_handler.so

                    libchrome_pak_allowlist_inputs.so

                    libchromium_android_linker.so

Can any one share solution for this or any suggestions to resolve this issue

Thank you very much in advance.