Thanks, I get it now! I was confused because Eclipse Help shows MinGW. I was able to add SDCC’s include directory, and it was compiling successfully with stdio.h, but then compile suddenly stopped working. All along, the “#include stdio.h” was highlighted in Eclipse as an unresolved inclusion, so I didn’t understand why it even worked before. I’m getting this error:
make: *** No rule to make target `x86)/SDCC/bin/../include/asm/mcs51/features.h)
', needed by `apps/receive_servo2/receive_servo2.rel'. Stop.