title: Compile Error on CodeBlocks with C++ obj/Release/MyApplication.o: no such file or directory under Ubuntu 20.04
body: <p>I'm new with C++ and also with CodeBlocks; what I'm trying to do is a simple frame with wxwidgets which holds a button inside and test some events.</p>
  <p>The compiler outputs the following error:</p>
  <pre><code>**=== Build: Release in Prueba (compiler: GNU GCC Compiler)===
  error: obj/Release/PruebaApp.o: No such file or directory
  error: obj/Release/PruebaMain.o: No such file or directory
  error: no input files
  === Build failed: 3 error(s), 0 warning(s) (0 minute(s)), second(s) ===**
  </code></pre>
  <p>Help, please!</p>
  <p>Thank you very much.</p>