Undefined references with stdlib with all library types

lpcware — Wed, 15 Jun 2016 21:39:47 GMT

Content originally posted in LPCWare by jdebliek on Fri Jul 04 09:55:41 MST 2014
I am getting a number of undefined references when compiling a project. I have tried the nohost and semihost redlib libraries and even newlib, but I get the following reference errors:

c:/nxp/lpcxpresso_6.1.0_164/lpcxpresso/tools/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7-m\libcr_c.a(alloc.o): In function `malloc':
alloc.c:(.text.malloc+0x70): undefined reference to `_sbrk'
alloc.c:(.text.malloc+0x90): undefined reference to `_sbrk'
c:/nxp/lpcxpresso_6.1.0_164/lpcxpresso/tools/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7-m\libcr_c.a(alloc.o): In function `_Csys_alloc':
alloc.c:(.text._Csys_alloc+0xe): undefined reference to `__sys_write'
alloc.c:(.text._Csys_alloc+0x12): undefined reference to `__sys_appexit'
c:/nxp/lpcxpresso_6.1.0_164/lpcxpresso/tools/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7-m\libcr_c.a(cr_clock.o): In function `clock':
cr_clock.c:(.text.clock+0x0): undefined reference to `__sys_clock'
c:/nxp/lpcxpresso_6.1.0_164/lpcxpresso/tools/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7-m\libcr_c.a(_deferredlazyseek.o): In function `__flsbuf':
_deferredlazyseek.c:(.text.(float, long, short, bool, float __restrict)+0x8a): undefined reference to `__sys_istty'
c:/nxp/lpcxpresso_6.1.0_164/lpcxpresso/tools/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7-m\libcr_c.a(_writebuf.o): In function `_Cwritebuf':
_writebuf.c:(.text._Cwritebuf+0x16): undefined reference to `__sys_flen'
_writebuf.c:(.text._Cwritebuf+0x2a): undefined reference to `__sys_seek'
_writebuf.c:(.text._Cwritebuf+0x52): undefined reference to `__sys_write'
c:/nxp/lpcxpresso_6.1.0_164/lpcxpresso/tools/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7-m\libcr_c.a(fseek.o): In function `fseek':
fseek.c:(.text.fseek+0x1a): undefined reference to `__sys_istty'
fseek.c:(.text.fseek+0x3c): undefined reference to `__sys_flen'

If I disable the "no startup or default libs" linker option, I get fewer undefined references, but there are still two remaining:

c:/nxp/lpcxpresso_6.1.0_164/lpcxpresso/tools/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7-m\libc.a(lib_a-sbrkr.o): In function `_sbrk_r':
sbrkr.c:(.text._sbrk_r+0xc): undefined reference to `_sbrk'
c:/nxp/lpcxpresso_6.1.0_164/lpcxpresso/tools/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7-m\libc.a(lib_a-timesr.o): In function `_times_r':
timesr.c:(.text._times_r+0x2): undefined reference to `_times'

I am not sure what else to try. Any help would be appreciated.

Re: Undefined references with stdlib with all library types

lpcware — Wed, 15 Jun 2016 21:39:48 GMT

Content originally posted in LPCWare by LabRat on Fri Jul 04 10:09:50 MST 2014

Quote: jdebliek
I am not sure what else to try.

Update to 7.2 :quest:

Re: Undefined references with stdlib with all library types

lpcware — Wed, 15 Jun 2016 21:39:49 GMT

Content originally posted in LPCWare by lpcxpresso-support on Fri Jul 04 10:20:30 MST 2014
Even better, read the FAQ.
http://www.lpcware.com/content/faq/lpcxpresso/linker-undefined-reference

labrat:
upgrading just to try to fix this won't help, it is a project configuration problem, as explained in the FAQ.

Re: Undefined references with stdlib with all library types

lpcware — Wed, 15 Jun 2016 21:39:49 GMT

Content originally posted in LPCWare by jdebliek on Mon Jul 07 13:04:08 MST 2014
When I first encountered the problem, I tried adding "#include <stdlib.h>" to the module using malloc. I had left that in when I tried switching to the semihost library. It turns out that when I remove the stdlib include and use the semihost library, it now builds properly.

LPCXpresso IDEのトピックUndefined references with stdlib with all library types

Undefined references with stdlib with all library types

Re: Undefined references with stdlib with all library types

Re: Undefined references with stdlib with all library types

Re: Undefined references with stdlib with all library types