Use link-time-optimization in the build. #22
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Using gcc-arm-none-eabi-9-2019-q4-major this gives a bootloader binary about 900 bytes smaller.
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This looks good to me - I could never figure out how to get LTO working with locm3. I tested it on my bluepill board and an STLink/v2 clone and it seems to work fine on both. |
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Using gcc-arm-none-eabi-9-2019-q4-major this gives a bootloader binary
about 900 bytes smaller.
The resulting binary was tested on a blue-pill board: entering the bootloader, reading flash and writing flash all worked ok.