java - enabling UTF-8 encoding for clojure source files

Question

I'm working on a project which involves maven, java and clojure. The problem I'm facing is this, I have some UTF-8 chars in my clojure source files because of which my source code is not interpreted correctly by the java compiler, I kinda got it working by setting the environment variable JAVA_TOOL_OPTIONS=-Dfile.encoding=UTF8, but what I want is to pass this property through MAVEN.

I have already tried setting MAVEN_OPTS=-Dfile.encoding but this doesn't seem to work.
I have also tried setting configuration for the compiler plugin of maven... something like this:

 <configuration>
        <compilerArgument>-Dfile.encoding=UTF8</compilerArgument>
 </configuration>

This doesn't work either.

I'm I doing something wrong, or is there another way.

thanks,
RD

Ok, Here's some more detail. This is my parent pom,

  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <configuration>
      <source>1.5</source>
      <target>1.5</target>
      <encoding>UTF-8</encoding> <! also tried <encoding>UTF8</encoding>
    </configuration>
  </plugin>

Nothing interesting in the child's pom except...

<resources>
  <resource>
    <directory>src/main/clojure</directory>
  </resource>
</resources>

;; clojure code snippet which causes problems

(let [char "?"]
   (not (empty? (filter #(s/contains? % char) <some-list>)))
;; The list is always empty because I never find a match if I do not set the env. variable

Answer 1

Did you try passing compiler options? [-encoding UTF-8]