I am using PICC with Tech Tools IDE, and there are no errors or warnings being printed to the output window. Why not?
PICC v8.02 is not directly compatible with Tech Tools IDE. The problem is that the error output from the compiler now goes to the standard error stream not the standard out stream, and Tech Tools IDE reads the output from the standard out stream. To workaround this problem you will need to specify from within the command line a -E option for each source file. Where the -E option is followed by a filename which the errors will be piped into. For example -Efoo.err will pipe all of the errors to foo.err. If you then keep the file foo.err open in the editor you can view any errors or warnings after compilation.