Using Code::Blocks How can i include another headers...

MIOS programming (C)
1

For example, maybe i want use memcpy or strlen … in string.h

i founded string.h in SSDC directory.

What i’ve to do to get run my application? If i add and include the header in my app in Code::Blocks , all i get is this compiler error:

error: missing definition for symbol "_strlen", required by "_output\main.o"

:-\

2

Hi Rio,

you have to include the mioslibsdcc.

You can find a description how to include it inside the download page (README.txt).

IIRC, the lib can be downloaded at the C-Page; but I guess you already have it.

Regards,

Michael

3

thxs for that fast reply, i will try it, if i need it…  ;D

4

hmm strlen does not seem to be included in TK’s SDCCLIB… It might be necessary to make it yourself.

You’ll need to get the source from SDCC (you’ve found that) and use fixasm.pl to make it work with MIOS and recompile.

This matter has come up a few times lately, so if you have some luck and could document the procedure on the wiki that would be really helpful!

5

mess has been so kind to already mail the code for strglength to your last topic:

http://www.midibox.org/forum/index.php?topic=8374.msg58278#msg58278

6

thx, but i’ve written already an function for that by myself :slight_smile: . I want test how much memory will be needed to include mioslibsdcc.lib… and if it is possible to use memcpy etc.

(i want check which performance is reachable with this lib)

7

The last time I included the lib it took about 5k of space (too much for my taste for one or two divisions). I’d be interested to know if it’s less in the meantime, although I doubt it.

I’ve heard different opinions here, but IMHO, it’s best to avoid complex divisions, use bitshiftings if possible (*2 and /2), or add __asm-optimized divisions (eg from the piclist) if needed and use the hardware multiplier (asm). Sofar I never needed any pointerMath, so I can’t say anything about that.

Cheers,

Michael

8

@audiocommander: thx again, yes i know bitshifting for multi/div from 6501 ASM :slight_smile:

@stryd_one: i don’t find any source from SDCC, only headers for that. There are many *.libs for different processor types in include directory of SDCC, but i don’t know what i have to do..

Greets, Rio.

9

i don’t find any source from SDCC, only headers for that

http://sdcc.sourceforge.net/  :-X

10

The files are included in the default installation… Try C:\Program Files\SDCC\lib\src\pic16 or C:\SDCC\lib\src\pic16 (you get the idea) :slight_smile: