Optimizing for smaller code size

[PeFe_666001]

On compiling the Test Console App I get the following message:

Making test_console-TWRK60D100M.elf

c:/users/016424/documents/wiced/wiced-sdk-2.4.0/wiced-sdk/tools/arm_gnu/bin/win32/arm-none-eabi-ld.exe: build/test_console-TWRK60D100M/Binary/test_console-TWRK60D100M.elf section `.text' will not fit in region `APP_CODE'

c:/users/016424/documents/wiced/wiced-sdk-2.4.0/wiced-sdk/tools/arm_gnu/bin/win32/arm-none-eabi-ld.exe: region `APP_CODE' overflowed by 22448 bytes

What is the procedure within the WICED SDK for compiler optimization to optimize the code for size? (to create more compact code?)

Thanks!

Peter

[Anonymous]

Hi Peter,

It's already optimized by -O3.

Please see build//test_console-TWRK60D100M/config.mk

You can modify wiced_toolchain_ARM_GNU.mk for -Os.

But I'm not sure over 22KB can be shrunk.

Regards,

[PeFe_666001]

dmiya

Thanks for your insight on this!

That -Os compiler optimization setting reduced the 22KB overflow down to a 6KB overflow but as you anticipated this not enough to get the code to fit within the MCU's 512KB of flash.

Peter

[Anonymous · Accepted solution]

Hi Peter,

If you don't need iperf, you can remove it by modifying console.mk.

It will reduce the code size much.

Regards,