How do I capture all of my compiler's output to a file?
The compiler warnings happen on stderr, not stdout, which is why you don't see them when you just redirect make somewhere else. Instead, try this if you're using Bash:
$ make &> results.txtThe & means "redirect stdout and stderr to this location". Other shells often have similar constructs.
In a bourne shell:
make > my.log 2>&1
I.e. > redirects stdout, 2>&1 redirects stderr to the same place as stdout
Lots of good answers so far. Here's a frill:
$ make 2>&1 | tee filetokeepitin.txt will let you watch the output scroll past.