title: Qt: How to create a directory in project file?
body: <p>I just want to crossplatform make a single directory from *.pro file. I use some commands like $(COPY_DIR) and $(COPY_FILE) well. And I saw in internets a many examples with command $(MKDIR) but it did not work for me.</p>
  
  <p>It prints:
  C:/Projects/installer/installer.pro(24): Extra characters after test expression.</p>
  
  <p>when I used $$(MKDIR) on line 24.</p>
  
  <p>Or:
  C:/Projects/installer/installer.pro(24):  '$' is not a recognized test function.</p>
  
  <p>when I $(MKDIR).</p>
  
  <p>What the proper way to create a directory in qmake projects?</p>