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CFLAGS += -save-temps
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CFLAGS += -std=gnu99 -Wall # implements C99, for <util/atomic.h>
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# this removes dead code and does global linker optimization
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#CFLAGS += -ffunction-sections -Wl,--gc-sections -Wl,--relax
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CFLAGS += -Wall -Os -I. -mmcu=atmega88 -lm -ffunction-sections -fdata-sections -Wl,--relax -ffreestanding
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# further optimization:
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#CFLAGS += --param inline-call-cost=2
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CFLAGS += -fno-move-loop-invariants # suggestions from from v-usb
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CFLAGS += -fno-tree-scev-cprop
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CFLAGS += -fno-inline-small-functions
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