Linking problems with Chibi-Studio

[levrik]

Hi there,
I'm having problems linking projects with vanilla Chibi-Studio:

Code: Select all

c:/chibistudio/tools/gnu tools arm embedded/4.6 2012q2/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7e-m\libc.a(lib_a-sbrkr.o): In function `_sbrk_r':
sbrkr.c:(.text._sbrk_r+0xc): undefined reference to `_sbrk'
c:/chibistudio/tools/gnu tools arm embedded/4.6 2012q2/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7e-m\libc.a(lib_a-abort.o): In function `abort':
abort.c:(.text.abort+0xa): undefined reference to `_exit'
c:/chibistudio/tools/gnu tools arm embedded/4.6 2012q2/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7e-m\libc.a(lib_a-signalr.o): In function `_kill_r':
signalr.c:(.text._kill_r+0xe): undefined reference to `_kill'
c:/chibistudio/tools/gnu tools arm embedded/4.6 2012q2/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7e-m\libc.a(lib_a-signalr.o): In function `_getpid_r':
signalr.c:(.text._getpid_r+0x0): undefined reference to `_getpid'
collect2: ld returned 1 exit status
make: *** [build/chibi-mf.elf] Error 1

This Project builds smoothly with another compiler without changes to its Makefile. The demos delivered with Chibi-Studio do compile and link without erros.

Thanks in advance for hints.

[Abhishek]

Looks like this is due to a missing syscalls.c file.

Try adding it and see if it works. There is a file named syscalls.c in chibios/os/various, try including it n the makefile and see if it works

Best Regards
Abhishek

[levrik]

Unfortunately did this not solve the problem. Still linking errors:

Code: Select all

c:/chibistudio/tools/gnu tools arm embedded/4.6 2012q2/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7e-m\libc.a(lib_a-abort.o): In function `abort':
abort.c:(.text.abort+0xa): undefined reference to `_exit'
c:/chibistudio/tools/gnu tools arm embedded/4.6 2012q2/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7e-m\libc.a(lib_a-signalr.o): In function `_kill_r':
signalr.c:(.text._kill_r+0xe): undefined reference to `_kill'
c:/chibistudio/tools/gnu tools arm embedded/4.6 2012q2/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7e-m\libc.a(lib_a-signalr.o): In function `_getpid_r':
signalr.c:(.text._getpid_r+0x0): undefined reference to `_getpid'
collect2: ld returned 1 exit status
make: *** [build/chibi-mf.elf] Error 1

[Giovanni]

You have to provide stubs for the missing functions or remove from your code the call to the library function depending on those.

Giovanni

[levrik]

Thanks for the quick answer. I'll implement these stubs then.

[mobyfab]

You can copy this from my repo:

https://github.com/mobyfab/ChibiOS-Examples/blob/master/STM32F4-LCD-C%2B%2B/stubs.c