Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Nios II linking errors

Hello!

I was debuggina program with the Nios II IDE 9.1(Sofywrae building tools for eclipse) and suddenly it hangs. Well it was not the first time, so I just restarted it, but...

Trying to cimple it again I got the following link error:

/cygdrive/e/altera/91/nios2eds/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc/nios2-elf/3.4.6/../../../../nios2-elf/lib/libc.a(closer.o)(.text+0x18): In function `_close_r':

/build/nios2eds-gnutools-win32-9.1/bin/nios2-gnutools/src/newlib/newlib/libc/reent/closer.c:53: undefined reference to `close'

collect2: ld returned 1 exit status

make: *** [FinalEthernetPort.elf] Error 1

I didn't do anything, it's the same source ode than before, the same flags. Why is this happening?

5 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    Try a clean. Then compile. If that doesn't fix it, I would ask if you've changed any settings in your BSP.

    Jake
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    When 'enable_exit' is activated, I have the same message: 'undefined reference to close' :S

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    If you are using Vista or Windows 7, try running the Nios II 9.1 Software Build Tools for Eclipse as Administrator. I have found that if I don't do this, I get all sorts of problems like this.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    Thanks for the replys

    I solved it adding the option "-u close" to the linker, now it works correctly. I still need to find out how that happenned, beacause I didn't need that flag initially.

    Thank you!

    Bye!