for(File sourceFile : sources) {
GimpleCompilationUnit unit;
try {
unit = gcc.compileToGimple(sourceFile, "-std=gnu99");
} catch(Exception e) {
throw new GccException("Error compiling " + sourceFile + " to gimple: " + e.getMessage(), e);
}
try {
units.add(unit);
} catch(Exception e) {