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[Core] Allow usage of AVRs minimal printf library (#16266)

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Co-authored-by: Sergey Vlasov <sigprof@gmail.com>
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Stefan Kerkmann 2022-04-22 10:13:31 +02:00 • committed by GitHub
parent 68a3fe8347
commit b1681fb6a1
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9
platforms/avr/platform.mk
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@ -37,6 +37,15 @@ CXXFLAGS += -fno-exceptions -std=c++11
LDFLAGS += -Wl,--gc-sections
# Use AVR's libc minimal printf implementation which has less features
# and thus can shave ~400 bytes. Usually we use the xprintf
# implementation but keyboards that use s(n)printf automatically
# pull in the AVR libc implementation, which is ~900 bytes heavy.
AVR_USE_MINIMAL_PRINTF ?= no
ifeq ($(strip $(AVR_USE_MINIMAL_PRINTF)), yes)
LDFLAGS += -Wl,--whole-archive -lprintf_min -Wl,--no-whole-archive
endif
OPT_DEFS += -DF_CPU=$(F_CPU)UL
MCUFLAGS = -mmcu=$(MCU)