Hi Jonathan, I've been curious about this in the past because I also started with mbed and then needed to make the transition over to KDS/KSDK. Now that I'm working with KDS 3, I figured I've give your project a shot. I exported LEDBlinky from mbed and then imported it into KDS. So far so good. But when I compiled, I got an error related to -nanolibc. If I compiled again, I would get the same error as you. I'm not sure why I wouldn't get the -nanolibc error again.
Anyhow, I removed that from my linker options, then did a clean and rebuild. I get the following errors now:
c:/freescale/kds_3.0.0/toolchain/bin/../lib/gcc/arm-none-eabi/4.8.4/../../../../arm-none-eabi/lib/armv7e-m/softfp\libg.a(lib_a-abort.o): In function `abort':
abort.c:(.text.abort+0xa): undefined reference to `_exit'
c:/freescale/kds_3.0.0/toolchain/bin/../lib/gcc/arm-none-eabi/4.8.4/../../../../arm-none-eabi/lib/armv7e-m/softfp\libg.a(lib_a-signalr.o): In function `_kill_r':
signalr.c:(.text._kill_r+0xe): undefined reference to `_kill'
c:/freescale/kds_3.0.0/toolchain/bin/../lib/gcc/arm-none-eabi/4.8.4/../../../../arm-none-eabi/lib/armv7e-m/softfp\libg.a(lib_a-signalr.o): In function `_getpid_r':
signalr.c:(.text._getpid_r+0x0): undefined reference to `_getpid'
collect2.exe: error: ld returned 1 exit status
I'm not sure how to fix these issues offhand, but I'm looking...