Debugging Android build

[Rahul]

HI,

I am building Chromium for Android. I want to do some experiments with the build writing log statements, How can I do this?

[Primiano Tucci]

If you're inside chromium, the ususal LOG statemens should be routed to Android log as well with the "chromium" tag, e.g.,

LOG(ERROR) << "Message." ;

 

If, for any weird reasons, you don't have base::Logging, the way you do low-level logging on Android (assuming you're talking of native C/C++ code is):

#include <android/log.h>

...

__android_log_print(ANDROID_LOG_ERROR, "RandomTagName", "There are %d books on the table", number_of_books);

On Tue, Apr 29, 2014 at 3:02 PM, Rahul <sharma.r...@gmail.com> wrote:

HI,

I am building Chromium for Android. I want to do some experiments with the build writing log statements, How can I do this?

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[Rahul]

@Primiano:  Thanks for the reply. But how would be able I see the result of log statements as I am transferring the .apk file to the Android device. For windows build it used to work with "chrome.exe --enable-logging -v=1" as the browser application was on the same machine.

[Mikhail Naganov]

Chrome log on Android goes into the system log. Just use what you usually use for viewing log output on Android, e.g. "adb logcat".

[Primiano Tucci]

Ah, sorry, I assumed you were familiar with Android logging, my bad. 
The way you see logs on Android is by running :

adb logcat 
adb is regularly part of the Android sdk. There should be a copy checked inside the chromium tree at this location:

$CHROME_SRC/third_party/android_tools/sdk/platform-tools/adb

Note that the log is going to be pretty spammy. If you want to see only errors, you can do:

adb logcat *:E

Or eventually to filter only chrome logging entries

adb logcat | grep chromium  

(IIRC all the LOG commands in chrome should be translated into __android_log_print commands which have tag="chromium")

[Rahul Sharma]

Thanks Primiano and Mikhail.

[Igor Yanishevskiy]

I'm also trying to use logging, and when I'm using LOG(ERROR) or LOG(INFO), I just don't see any logging in logcat.

And when I'm trying with __android_log_print, I'm getting error: undefined reference to '__android_log_print' on linking step.

вторник, 29 апреля 2014 г., 19:34:20 UTC+2 пользователь Primiano Tucci написал: