Here’s an interesting little “feature”… 
My project was building fine for Remote, but the Target build failed with
I was puzzled - how could the Remote (Microsoft) build find it, but not GCC?
The file certainly existed.
I tried re-running the Project Wizard - but no help. 
Then I spotted my mistake in the code:
#include "file.h "I’d put a spurious space at the end of the filename! 
[/quote]
Answers on a postcard as to why this matters to GCC, but not to MS…