src/devices/tech/dalvik/art.jd

page.title=Introducing ART
@jd:body

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<p>
ART is a new Android runtime being introduced experimentally in the 4.4
release. This is a preview of work in progress in KitKat that can be turned on
in Settings &gt; developer options. This is available for the purpose of
obtaining early developer and partner feedback.</p>

<p><strong>Important</strong>: Dalvik must remain the default runtime or
you risk breaking your Android implementations and third-party applications.</p>

<p>
Two runtimes are now available, the existing Dalvik runtime (libdvm.so) and the
ART (libart.so). A device can be built using either or both.
(You can dual boot from Developer options if both are installed.)
</p>

<p>
The <code>dalvikvm</code> command line tool can run with either of them now.
See runtime_common.mk. That is included from build/target/product/runtime_libdvm.mk or
build/target/product/runtime_libdvm.mk or both.</p>

<p>
A new <code>PRODUCT_RUNTIMES</code> variable controls which runtimes
are included in a build. Include it within either
build/target/product/core_minimal.mk or build/target/product/core_base.mk.
</p>

<p>
Add this to the device makefile to have both runtimes
built and installed, with Dalvik as the default:
</br>
<code>PRODUCT_RUNTIMES := runtime_libdvm_default</code>
</br>
<code>PRODUCT_RUNTIMES += runtime_libart</code>
</p>