If anybody tries this and finds a problem, please let me know. I carefully (I hope) documented the process. I am sure this is easy for a lot of people, but I'm an old guy and having slung code for a long time. Thanks to Google, and the fact I am stuck in a wheelchair for a few weeks, I was able to get, step by step, to the point where it all works. I gave up trying to figure out why, but I ran into all kinds of problems which led me to new problems. I think the problem is that some of the information is dated, or not directly relevant to my platform. Based on what I read, and, in particular from this post I spend about 4 days figuring out how to do it. I wanted to move from the Arduino development environment for a variety of reasons. Click the OK button to close the Compiler settings window.Hello everybody.The C compiler should be either gcc or optionally gcc-8, the C++ compiler should be g++-8 and the Linker for dynamic libs should be g++-8. button(s) which are marked by the mouse cursor in the below screenshot. It has already been selected in the below screenshot. Select Settings -> Compiler -> Global compiler settings (large blue gear icon in the left pane) -> Toolchain executables tab.sudo apt install gcc-8-base # recommended version Optionally install the latest version of gcc too (recommended).

Install the latest version of the g++ compiler for C++. The C++ compiler is not configured for any version of g++ in Ubuntu 18.04 by default, so it has to be configured in the Code::Blocks compiler settings. Your C++ program is not running in Code::Blocks because you do not have a C++ compiler (a version of G++) installed, or if it is installed you have not configured the C++ compiler in the Code::Blocks compiler settings.

Codeblocks compiler running error