optimization settings

[haroldvogel]

How do I know, and set, the compiler optimization settings?

[jorge_a_vazquez]

Hi Harold Vogel

You didn't mention your device. If you're using kinetis, the optimization options in CodeWarrior can be set up in the GCC compiler settings:

You can also check this post:

https://mcuoneclipse.com/2012/11/11/optimizing-the-kinetis-gcc-startup/

About the code size you can check these posts by our colleague Erich:

https://mcuoneclipse.com/2014/07/13/listing-code-and-data-size-for-each-source-file-with-gnu-and-ecl...

https://mcuoneclipse.com/2012/09/24/code-size-information-with-gcc-for-armkinetis/

https://mcuoneclipse.com/2014/05/04/printing-code-size-information-in-eclipse/

Have a great day,
Jorge Alcala

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

[martin_kovar]

Hi,

which IDE  and device you use?

Regards,

Martin

[haroldvogel]

Also, how do I know how much memory is being used by the code? I can see the size of the .ELF and .HEX files but not sure how that relates to the code being stored in the on-board Flash?

Sincerely,

H. John Vogel

[BlackNight]

Hi John,

in case you are using S08: the linker prints the code/data size to the console.

Otherwise, if using the GNU size utility, this one might be helpful: https://mcuoneclipse.com/2013/04/14/text-data-and-bss-code-and-data-size-explained/

In any case, all the details are in the .map (produced by the linker) file.

I hope this helps,

Erich

[haroldvogel]

Hello Erich,

If by device you mean the CPU it is MKL36Z256VLL4, this is a Kinetis device using Code Warrior with GCC complier.

John

[haroldvogel]

I hope that this helps:

CodeWarrior Development Studio

(c) Freescale Semiconductor, Inc. 2014. All rights reserved.

Learn more about CodeWarrior at

http://www.freescale.com/codewarrior

Installed Products:

- CodeWarrior for MCU

Version: 10.6

Build Id:140329