Android source code compile error: “Try increasing heap size with java option '-Xmx'”

Question

Error happens when I try to compile Android source code(Sourcecode-version: 6.0.1; RAM: 6G; host system: ubuntu 14.04),log is below:

including ./system/netd/         


        

Answer 1

I had the same problem. So I've tried to set JACK_SERVER_VM_ARGUMENTS to include -Xmx=4g, but when building again the log output showed that this was not included in the startup. Dunno why, seems like the env vars do not get passed to the build script correctly.

Solution

Before starting a clean android build set the JACK_SERVER_VM_ARGUMENTS to include -Xmx=4g, then stop and start the jack server manually. Given you're in the main source tree of AOSP run the following:

export JACK_SERVER_VM_ARGUMENTS="-Dfile.encoding=UTF-8 -XX:+TieredCompilation -Xmx4g"
./prebuilts/sdk/tools/jack-admin kill-server
./prebuilts/sdk/tools/jack-admin start-server

for cm you can use

export JACK_SERVER_VM_ARGUMENTS="-Dfile.encoding=UTF-8 -XX:+TieredCompilation -Xmx4g"
jack-admin kill-server && jack-admin start-server

This resolved the issue for me.