Databases
StackOverflow2013
Postsdbo
POUndefined reference to _sbrk
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POUndefined reference to _sbrk
    primarykey
    data
    text
    <p>I am having a problem with _sbrk. In a link phase of compilation i use below comand to link my objects and i get undefined reference to _sbrk.</p> <pre><code>arm-none-eabi-ld -static -T linkerscript.ld -o exe timer_example.o /home/ziga/projects/cs_lite/arm-none-eabi/lib/libc.a /home/ziga/projects/cs_lite/lib/gcc/arm-none-eabi/4.5.1/libgcc.a </code></pre> <p>I am compiling for arm926ej-s and in ARM mode so i think i have chosen the right multilib (libc.a and libgcc.a) which is located in folder home/ziga/projects/cs_lite/arm-none-eabi/lib/.</p> <p>I have been searching internet for _sbrk function and it is some sort of a memory managment call which isnt included in standard C libraries as it is dependant on microprocessor. Soo do i have to write _sbrk function on my own? How do i do it? Do you have any example for arm926ej-s? After writing this function i intend to compile it into an object file and link it together with other objects, libraries.</p> <p>With kind regards, Ziga.</p> <hr> <p>I solved this problem and will post solution here so i give something back to comunity. The function _sbrk is located inside NXP CDL package for ARM. Package is available for download (link is for all who dont know this already) here: <a href="http://www.lpclinux.com/Downloads/WebHome">http://www.lpclinux.com/Downloads/WebHome</a> In subfolder CDL_v005/csps/lpc313x/bsps/ea3131/source you will find source file named libnosys_gnu.c which should be added to the project and compiled to object file and after that linked to executable file alongside other objects and libraries.</p> <p>Best wishes and a lot of sucess.</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. US71GA
    1. US71GA
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POUndefined reference to _sbrk
      1. US71GA
      1. VTFavorite
    2. VO
      singulars
      1. POUndefined reference to _sbrk
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POUndefined reference to _sbrk
      1. This table or related slice is empty.
      1. VTUpMod
    1. COyou should actually put that answer in an _answer_ rather than editing your question. It's fine to answer your own questions (even to accept it).
      singulars
      1. POUndefined reference to _sbrk
      1. USpaxdiablo
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload