Maven - Reactors (Aggregation) - maven

Question

I have a maven project with a following directory structure:
trunk
| pom.xml
| coreutils
| | pom.xml
| | src
| budgetCap
| | pom.xml
| | src
The content of trunk/pom.xml is :
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
hxttp://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>Ant2Maven</groupId>
<artifactId>parent</artifactId>
<version>1.0</version>
<packaging>pom</packaging>
<name>Parent Pom</name>
<modules>
<module>coreutils</module>
<module>budgetCap</module>
</modules>
In this structure, "budgetCap" is dependent on "coreutils",i.e. pom.xml of "budgetCap" contains a dependency of "coreutils"
Now I have two methods to build this project
First Method
Aggregation using Reactor
I will be inside trunk
So first of all I do mvn clean
shakim:trunk shakim.md$ mvn clean
Maven deletes the target folder of the two module in this order:
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] coreutils
[INFO] budgetCap Maven Webapp
[INFO] Parent Pom
Now when i do mvn install
shakim:trunk shakim.md$ mvn install
Maven starts building modules in the following order:
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] coreutils
[INFO] budgetCap Maven Webapp
[INFO] Parent Pom
In the given order, coreutils gets installed in the local repository successfully.
But budgetCap fails at the compilation giving an error that maven is unable to locate a class which was supposed to be produced by coreutils
the error message is as follows:
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building budgetCap Maven Webapp 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) # budgetCap ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 4 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) # budgetCap ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 65 source files to /Users/shakim.md/shakim/maven/ops/adq_services/trunk/budgetCap/target/classes
[INFO] -------------------------------------------------------------
[WARNING] COMPILATION WARNING :
[INFO] -------------------------------------------------------------
[WARNING]/Users/shakim.md/shakim/maven/ops/adq_services/trunk/budgetCap/src/main/java/com/adiquity/budgetCap/core/SingletonAggregator.java: /Users/shakim.md/shakim/maven/ops/adq_services/trunk/budgetCap/src/main/java/com/adiquity/budgetCap/core/SingletonAggregator.java uses unchecked or unsafe operations.
[WARNING]/Users/shakim.md/shakim/maven/ops/adq_services/trunk/budgetCap/src/main/java/com/adiquity/budgetCap/core/SingletonAggregator.java: Recompile with -Xlint:unchecked for details.
[INFO] 2 warnings
[INFO] -------------------------------------------------------------
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /Users/shakim.md/shakim/maven/ops/adq_services/trunk/budgetCap/src/main/java/com/adiquity/budgetCap/core/BudgetCapServer.java:[41,34] package com.adiquity.request.utils does not exist
[ERROR] /Users/shakim.md/shakim/maven/ops/adq_services/trunk/budgetCap/src/main/java/com/adiquity/budgetCap/utils/Utils.java:[9,34] package com.adiquity.request.utils does not exist
[ERROR] /Users/shakim.md/shakim/maven/ops/adq_services/trunk/budgetCap/src/main/java/com/adiquity/budgetCap/log/data/parser/ConversionParser.java:[16,34] package com.adiquity.request.utils does not exist
Briefly speaking this package package com.adiquity.request.utils is actually present in coreutils, which this module budgetCap must have located successfully, but it is not.
Second Method
Go inside coreutils and do a
shakim:coreutils shakim.md$ mvn clean install
Go inside budgetCap and do a
shakim:budgetCap shakim.md$ mvn clean install
budgetCap compiles successfully without reporting any kind of error.
My question is that I want to use Reactors in Maven and I am unable to figure out why the build fails on using 1st method whereas 2nd method of building completes smoothly??
I am not sure how to use reactors, do we need to include anything in pom of coreutils and budgetCap signifying that pom of trunk is the parent.
Note: I don't want to use inheritance in this project