Posted on July 17, 2017 at 18:28Probably because IAR is a commercial grade tool used by the companies that ST is focused on supporting.
The bigger question is why can't tool chain X do a half reasonable job of 'importing' a project from tool chain Y? When you're a third tier tool chain vendor the first item on the check list would be how to pull customers away from the first tier vendor.
When I port things in to Keil, I start with a shell project, and then add in the files and directories from the other tools, and pay attention to the metadata/options within the other project, ie command line options, include paths, etc. At some point you get down to compiler specific things, like keywords, pragmas, in-line assembly, etc, and you'll have to manage those based on your understanding of your own chosen tool chain vs the one used by the original developer.
