By default SDCC writes its error messages to ''standard error''.
To force all messages to ''standard output'' use --use-stdout.
Additionally, if you happen to have visual studio installed in your
windows machine, you can use it to compile your sources using a custom
build and the SDCC --vc option. Something
like this should work:
c:\sdcc\bin\sdcc.exe
--vc --model-large -c $(InputPath)