Björn Kautler created GROOVY-11666:
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Summary: Incremental compilation in groovyc Ant task is not
working properly
Key: GROOVY-11666
URL: https://issues.apache.org/jira/browse/GROOVY-11666
Project: Groovy
Issue Type: Bug
Affects Versions: 4.0.26
Reporter: Björn Kautler
Given this small MCVE:
{code:none}
./build.xml
<?xml version="1.0" encoding="UTF-8"?>
<project name="foo" xmlns:groovy="antlib:org.codehaus.groovy.ant"
xmlns:ivy="antlib:org.apache.ivy.ant">
<property name="config.ivy.version" value="2.2.0"/>
<property name="lib.dir" location="build/libs"/>
<property name="ivy.jar.dir" location="${lib.dir}/ivy"/>
<property name="ivy.jar.filename" value="ivy-${config.ivy.version}.jar"/>
<property name="ivy.jar.file"
location="${ivy.jar.dir}/${ivy.jar.filename}"/>
<target name="check-ivy">
<available property="ivy.jar.present"
file="${ivy.jar.file}"
type="file"/>
</target>
<target name="download-ivy" depends="check-ivy" unless="ivy.jar.present">
<mkdir dir="${ivy.jar.dir}"/>
<get
src="https://repo.maven.apache.org/maven2/org/apache/ivy/ivy/${config.ivy.version}/ivy-${config.ivy.version}.jar";
dest="${ivy.jar.file}" usetimestamp="true"/>
</target>
<target name="init-ivy" depends="download-ivy" unless="ivy.done">
<property name="ivy.retrieve.pattern"
value="${lib.dir}/[conf]/[artifact](-[classifier]).[ext]"/>
<taskdef resource="org/apache/ivy/ant/antlib.xml"
classpath="${ivy.jar.file}" loaderref="ivy.loader"
uri="antlib:org.apache.ivy.ant"/>
</target>
<target name="retrieve" description="retrieve the dependencies"
depends="init-ivy" unless="ivy.done">
<ivy:retrieve sync="true"/>
<ivy:retrieve pattern="${lib.dir}/ivy/[artifact]-[revision].[ext]"
organisation="org.apache.ivy" module="ivy" revision="${config.ivy.version}"
conf="default" inline="true"/>
<property name="ivy.done" value="true"/>
</target>
<target name="compile" depends="retrieve">
<mkdir dir="build/classes/main"/>
<taskdef resource="org/codehaus/groovy/antlib.xml"
uri="antlib:org.codehaus.groovy.ant">
<classpath>
<fileset dir="${lib.dir}/groovy-ant" includes="*.jar"/>
</classpath>
</taskdef>
<groovy:groovyc srcdir="src" destdir="build/classes/main">
<classpath>
<fileset dir="${lib.dir}/compile" includes="*.jar"/>
</classpath>
</groovy:groovyc>
</target>
</project>
./ivy.xml
<?xml version="1.0" encoding="UTF-8"?>
<ivy-module version="2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:noNamespaceSchemaLocation="https://ant.apache.org/ivy/schemas/ivy.xsd";>
<info organisation="foo" module="foo"/>
<configurations>
<conf name="compile" description="Compile dependencies"
visibility="private" transitive="false"/>
<conf name="groovy-ant" description="Dependencies for Groovy Ant tasks"
visibility="private"/>
</configurations>
<dependencies defaultconfmapping="%->default">
<dependency org="org.apache.groovy" name="groovy" rev="4.0.26"
conf="compile"/>
<dependency org="org.apache.groovy" name="groovy-ant" rev="4.0.26"
conf="groovy-ant"/>
<dependency org="org.apache.groovy" name="groovy-groovydoc"
rev="4.0.26" conf="groovy-ant"/>
</dependencies>
</ivy-module>
./src/Bar.groovy
class Bar {
def foo = new Foo()
}
./src/Foo.groovy
class Foo {
}
{code}
If you now do {{ant compile}}, everything works just fine.
Now modify only the class {{Bar}} in some way (that does not remove the
reference to {{Foo}}).
And now run {{ant compile}} again.
The {{groovyc}} task wants to be nice and only compile the changed {{Bar}}
class, but it fails with {{2: unable to resolve class Foo}}.
The {{groovyc}} task should probably automatically contain its destination
directory in the classpath to fix this.
This is also the work-around I am using, by adding {{<pathelement
location="build/classes/main"/>}} inside the {{<classpath>}}.
This makes the incremental compiling work as expected as now the previously
compiled classes are part of the classpath and can be found.
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