Checking core structure...
compile_project:10: no matches found: *.in
rm -f calc-core.jar `find . -name \*.class`
(cd src; javac -encoding UTF-8 `find . -name \*.java`)
./calc/Reference.java:17: error: illegal start of expression
      return /*ref*/.getLit() == NULL;
                    ^
./calc/Reference.java:17: error: not a statement
      return /*ref*/.getLit() == NULL;
                              ^
2 errors
make: *** [all] Error 1