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Rev 1490 Rev 1491
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# Optimization level, can be [0, 1, 2, 3, s]. 0 turns off optimization.
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# Optimization level, can be [0, 1, 2, 3, s]. 0 turns off optimization.
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# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
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# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
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OPT = s
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OPT = s
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#OPT = 2
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##########################################################################################################
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##########################################################################################################
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#  -f...:     tuning, see gcc manual and avr-libc documentation
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#  -f...:     tuning, see gcc manual and avr-libc documentation
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#  -Wall...:  warning level
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#  -Wall...:  warning level
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#  -Wa,...:   tell GCC to pass this to the assembler.
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#  -Wa,...:   tell GCC to pass this to the assembler.
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#    -ahlms:  create assembler listing
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#    -ahlms:  create assembler listing
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CFLAGS = -O$(OPT) -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Wstrict-prototypes -Wa,-adhlns=$(<:%.c=%.lst) $(patsubst %,-I%,$(EXTRAINCDIRS))
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CFLAGS = -O$(OPT) -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Wstrict-prototypes -Wa,-adhlns=$(<:%.c=%.lst) $(patsubst %,-I%,$(EXTRAINCDIRS))
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# shrink code size
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CFLAGS += -fno-inline-functions  -mtiny-stack
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# Set a "language standard" compiler flag.
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# Set a "language standard" compiler flag.
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#   Unremark just one line below to set the language standard to use.
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#   Unremark just one line below to set the language standard to use.
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#   gnu99 = C99 + GNU extensions. See GCC manual for more information.
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#   gnu99 = C99 + GNU extensions. See GCC manual for more information.
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#CFLAGS += -std=c89
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#CFLAGS += -std=c89
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#CFLAGS += -std=gnu89
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#CFLAGS += -std=gnu89
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#CFLAGS += -std=c99
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#CFLAGS += -std=c99
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CFLAGS += -std=gnu99
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# shrink code size
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CFLAGS += -mtiny-stack
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#CFLAGS += -fno-inline-functions
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CFLAGS += -std=gnu99
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CFLAGS += -mcall-prologues
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CFLAGS += -DF_CPU=$(F_CPU) -DVERSION_MAJOR=$(VERSION_MAJOR) -DVERSION_MINOR=$(VERSION_MINOR) -DVERSION_PATCH=$(VERSION_PATCH) -DVERSION_SERIAL_MAJOR=$(VERSION_SERIAL_MAJOR) -DVERSION_SERIAL_MINOR=$(VERSION_SERIAL_MINOR) -DNC_SPI_COMPATIBLE=$(NC_SPI_COMPATIBLE)
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CFLAGS += -DF_CPU=$(F_CPU) -DVERSION_MAJOR=$(VERSION_MAJOR) -DVERSION_MINOR=$(VERSION_MINOR) -DVERSION_PATCH=$(VERSION_PATCH) -DVERSION_SERIAL_MAJOR=$(VERSION_SERIAL_MAJOR) -DVERSION_SERIAL_MINOR=$(VERSION_SERIAL_MINOR) -DNC_SPI_COMPATIBLE=$(NC_SPI_COMPATIBLE)