title: Are multiple build tools (qmake + scons) on the same project considered bad practice?
body: <p>My program depends on two libraries. The first one uses scons and the last one uses qmake. The program itself uses scons. So to build the whole project, I have a makefile that builds the first library with scons and the second library with qmake.</p>
  
  <p>Is it considered bad practice to use multiple build tools on the same project? Should I create a scons-file to build the last library too?</p>