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annotate Makefile.avr @ 17:bbe75f183cf9

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Allow path to toolchain to be specified.
author Daniel O'Connor <darius@dons.net.au>
date Tue, 08 Jan 2013 09:55:53 +1030
parents 4e10d1eef9a5
children b5e4591b6570
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1 #
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2 # Helper makefile to build AVR sources
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3 #
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4
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5 .SUFFIXES: .hex .out .c .o .elf .dmp .s .fuse
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6
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7 # Otherwise we get -march=foo
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8 NO_CPU_CFLAGS=
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9 _CPUCFLAGS=
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10
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11 # Programs
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12 TPREFIX?=
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13 AS=${TPREFIX}/avr-as
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14 CC=${TPREFIX}/avr-gcc
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15 OBJCOPY=${TPREFIX}/avr-objcopy
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16 OBJDUMP=${TPREFIX}/avr-objdump
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17 SED=sed
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18 TAIL=tail
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20 # Tell as to generate listings
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21 CPPFLAGS+=-Wa,-adhlmsn=${<:T:S/.c/.lst/}
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22
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23 MCU?=notset
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24 CFLAGS+=-mmcu=${MCU}
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25
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26 LDFLAGS+=-Wl,-Map=${PROG}.map,--cref
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27 LDFLAGS+=${LDADD}
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28
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29 RM=rm -f
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30
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31 PROGRAMMER=avrdude
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32 PROGTYPE?=alf
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34 # Need the -B 1 or it is very slow. For slow clocks (eg factory fused) -B 10 works
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35 # For BP programming this is intolerably slow
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36 #PROGOPTS+=-B 1
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38 .if defined(WITH_FUSES)
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39 FUSEFILE=${PROG}.fuse
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40 PROGOPTS+=`cat ${PROG}.fuse`
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41 .elf.fuse:
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42 ${OBJDUMP} -s -j .fuse ${.IMPSRC} | ${TAIL} -1 | ${SED} -nEe 's, [^ ]+ (..)(..)(..).*,-Ulfuse:w:0x\1:m -Uhfuse:w:0x\2:m -Uefuse:w:0x\3:m,p' >${.TARGET}
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43 .else
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44 FUSEFILE=
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45 .endif
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47 .if ${PROGTYPE} != "dragon_isp" && ${PROGTYPE} != "dragon_jtag"
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48 PROGEXITS?=vcc,noreset
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49 .endif
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50
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51 .if defined(PROGEXITS) && ${PROGEXITS} != ""
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52 _PROGEXITS=-E ${PROGEXITS}
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53 .endif
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54 .if defined(PROGPORT) && ${PROGPORT} != ""
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55 _PROGPORT=-P ${PROGPORT}
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56 .endif
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57
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58 PROGPART?=${PART}
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59
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60 PROGOPTS+=-p ${PROGPART} -c ${PROGTYPE} ${_PROGPORT} ${_PROGEXITS} -U flash:w:${PROG}.hex ${PROGEXTRA}
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61
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62 .if !defined(SRCS)
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63 SRCS= ${PROG}.c
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64 .endif
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65
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66 OBJS+= ${SRCS:N*.h:R:S/$/.o/g}
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67
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68 all: ${PROG}.hex ${PROG}.dmp
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69
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70 .c.o:
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71 ${CC} ${CFLAGS} ${CPPFLAGS} -c ${.IMPSRC} -o ${.PREFIX}.o
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72
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73 ${PROG}.elf: ${OBJS}
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74 ${CC} ${CFLAGS} ${LDFLAGS} -g ${OBJS} -o ${PROG}.elf ${LDADD}
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76 .elf.hex:
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77 ${OBJCOPY} -j .text -j .data -j .bss -j .noinit -O ihex $> $@
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79 .elf.dmp:
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80 ${OBJDUMP} -S ${.IMPSRC} > ${.PREFIX}.dmp
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82 clean:
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83 ${RM} ${PROG}.hex ${PROG}.out ${PROG}.elf ${PROG}.map ${OBJS} ${OBJS:S/.o/.lst/} ${PROG}.dmp ${PROG}.fuse
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85 prog: ${PROG}.elf ${FUSEFILE}
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86 ${PROGRAMMER} ${PROGOPTS}
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87
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88 #########################
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89 #;;; Local Variables: ***
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90 #;;; mode:makefile ***
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91 #;;; End: ***