topic Re: MQX build sizes in MQX Software Solutions

MQX build sizes

dry — Thu, 29 Dec 2016 20:59:35 GMT

I was checking how much space the MQX builds take, and it seems I get them not so small.

For the simple MQX "hello" example, I get about 34Kbytes binary build.

arm-none-eabi-size gcc_arm/ram_release/hello_twrvf65gs10_m4.elf
text data bss dec hex filename
33216 1120 376 34712 8798 gcc_arm/ram_release/hello_twrvf65gs10_m4.elf

This is with GCC-5.4.1, and as you see above this is release build (from folder name). The release build uses the optimized for size compiler options, and removing unused sections by the linker, as I checked from the make output.

(-O2; -gc-sections )

Is this size is what I should expect, or do others get it much smaller?

Re: MQX build sizes

dry — Fri, 30 Dec 2016 13:16:34 GMT

This is after changing linking against libc_nano. ~1k less

text data bss dec hex filename
32948 144 520 33612 834c gcc_arm/ram_release/hello_twrvf65gs10_m4.elf

(There should be a global option to build all examples against libc_nano , libsupc++_nano)

Re: MQX build sizes

danielchen — Sat, 31 Dec 2016 23:43:30 GMT

Hi D.RY:

There is a benchmrk codesize example in the MQX installation folder, you can refer to it.

C:\Freescale\Freescale_MQX_4_2\mqx\examples\benchmrk\codesize

There are three different configurations for MQX RTOS kernel. They are maximum configuration with all the optional and core components of MQX RTOS, typical configurations without some optional components like semaphores, events, logs, etc... and the small configuration with some core components of MQX RTOS.

Regards

Daniel

Re: MQX build sizes

dry — Tue, 03 Jan 2017 08:54:07 GMT

Thanks, I need to try that.