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[Cortex-M3] Things to try in order to shrink image size

Alex Ruiz

Hi,

I need to reduce a image size to a minimum. The project is a CANBUS Bootstrap that must fit under 4KB and be written in C.

I'm using MicroLIB, Link-Time Code Generation, -O3, ZI init.

What other compiler/assembler/linker settings could I possibly apply in order to shrink the image?

Thanks.

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  • 0 in reply to Mike Kleshov

    I spent some more time looking at compiler/linker settings and end up finding compiler --remove_unneeded_entities and linker/compiler --feedback. Those options remove unused sections while still allow me to work with -O0.

    The map file looks pretty small from the Compiler/Libraries point of view so not really much to do on settings.

    The system setup and mechanism to send/receive CAN messages are generating a 2400 bytes image (-O3). I believe the final app will fit under 4KB...

    Thank you.

Reply
  • 0 in reply to Mike Kleshov

    I spent some more time looking at compiler/linker settings and end up finding compiler --remove_unneeded_entities and linker/compiler --feedback. Those options remove unused sections while still allow me to work with -O0.

    The map file looks pretty small from the Compiler/Libraries point of view so not really much to do on settings.

    The system setup and mechanism to send/receive CAN messages are generating a 2400 bytes image (-O3). I believe the final app will fit under 4KB...

    Thank you.

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