Building TextSecure =================== Fetch ActionBarSherlock: git clone git://github.com/JakeWharton/ActionBarSherlock.git ../ActionBarSherlock pushd ../ActionBarSherlock && git checkout 4.2.0 && popd Configure ActionBarSherlock for your android target: android update project --path ../ActionBarSherlock/library --target 1 Configure TextSecure for your android target, linking to ASB: android update project --path . --target 1 --library ../ActionBarSherlock/library Finally, both codebases must share the android-support jar. As TextSecure's is newer, use it: cp libs/android-support-v4.jar ../ActionBarSherlock/library/libs/android-support-v4.jar Assuming your android toolchain is correctly configured, it should now be possible to build the TextSecure apk. ant debug