Question

I have an ant build file that executes a makefile

        <target name="jni">
            <exec executable="make">
                <arg line="-f jni/Makefile"/>
            </exec>
        </target>

however if the make fails the other rules that depend on this rule will execute

how can I stop ant if the jni rule fails?

Answer 1

use the failonerror attribute, which is false by default:

<target name="jni">
    <exec executable="make" failonerror="true">
        <arg line="-f jni/Makefile"/>
    </exec>
</target>

I never stop wondering why it is not true by default…
See the docs.