8000 esp32/boards: Build using newlib nano formatting functions. · mzdaniel/micropython@10601b0 · GitHub
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esp32/boards: Build using newlib nano formatting functions.
Saves code size, MicroPython doesn't appear to rely on any of the missing formatters (64-bit integers, c99-style named arguments). Signed-off-by: Angus Gratton <angus@redyak.com.au>
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‎ports/esp32/boards/sdkconfig.base

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@@ -121,3 +121,9 @@ CONFIG_ETH_USE_SPI_ETHERNET=y
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CONFIG_ETH_SPI_ETHERNET_W5500=y
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CONFIG_ETH_SPI_ETHERNET_KSZ8851SNL=y
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CONFIG_ETH_SPI_ETHERNET_DM9051=y
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# Using newlib "nano" formatting saves size on SoCs where "nano" formatting
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# functions are in ROM. Note some newer chips (c2,c6) have "full" newlib
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# formatting in ROM instead and should override this, check
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# ESP_ROM_HAS_NEWLIB_NANO_FORMAT.
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CONFIG_NEWLIB_NANO_FORMAT=y

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