Fix #58 Build fails without idl/ directory

Author: smehrbrodt

core/source/org/libreoffice/ide/eclipse/core/builders/TypesBuilder.java

@@ -255,7 +255,8 @@ public static void buildIdl(IUnoidlProject pProject, IProgressMonitor pMonitor)
 
         // compile each idl file
         IFolder idlFolder = pProject.getFolder(pProject.getIdlPath());
-        idlFolder.accept(new IdlcBuildVisitor(pMonitor));
+        if (idlFolder.exists())
+            idlFolder.accept(new IdlcBuildVisitor(pMonitor));
     }
 
     /**

core/source/org/libreoffice/ide/eclipse/core/internal/helpers/UnoidlProjectHelper.java

@@ -513,7 +513,8 @@ public static UnoPackage createMinimalUnoPackage(IUnoidlProject pPrj, File pDest
         File prjFile = SystemHelper.getFile(pPrj);
 
         // Add content to the package
-        unoPackage.addTypelibraryFile(UnoPackage.getPathRelativeToBase(libFile, prjFile), libFile); //$NON-NLS-1$
+        if (libFile.exists())
+            unoPackage.addTypelibraryFile(UnoPackage.getPathRelativeToBase(libFile, prjFile), libFile); //$NON-NLS-1$
         pPrj.getLanguage().getLanguageBuidler().fillUnoPackage(unoPackage, pPrj);
 
         return unoPackage;