Kinetis Design StudioのトピックRe: New KDS 3 problem - undefined reference to _sbrk

New KDS 3 problem - undefined reference to _sbrk

davidsherman — Tue, 30 Jun 2015 12:42:03 GMT

Yesterday things built after upgrading from KDS2 to KDS3, after fixing a couple problems. Today I changed build configurations, built clean, and now I see this:

c:/freescale/kds_3.0.0/toolchain/bin/../lib/gcc/arm-none-eabi/4.8.4/../../../../arm-none-eabi/lib/armv6-m\libg_s.a(lib_a-sbrkr.o): In function `_sbrk_r':

sbrkr.c:(.text._sbrk_r+0xc): undefined reference to `_sbrk'

What gives? This built correctly under KDS2. Interestingly, switching back to the other configuration seems to make it go away.

Re: New KDS 3 problem - undefined reference to _sbrk

BlackNight — Tue, 30 Jun 2015 12:59:31 GMT

have you already added

--specs=nosys.specs

to the linker options?

Erich

Re: New KDS 3 problem - undefined reference to _sbrk

davidsherman — Tue, 30 Jun 2015 13:48:26 GMT

Ah, I had missed that in the migration page write up. I've bookmarked it. Adding that to the linker options seems to have fixed that. Thank you again, Erich!

Re: New KDS 3 problem - undefined reference to _sbrk

zqy6394 — Mon, 08 Jan 2024 13:20:48 GMT

Where can I find linker options?

thanks

Erich