annotate Makefile @ 139:fb0745eec453

Add "help" command. (Building help/help.h requires python, but I'll ship that file with release versions.)
author Rob Landley <rob@landley.net>
date Wed, 29 Aug 2007 08:10:01 -0500
parents a459c6b39645
children 478d3c77068b
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f8e628f61f16 Make the config generate gen_config.h with CFG_ and USE() macros.
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1 # Makefile for toybox.
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2 # Copyright 2006 Rob Landley <rob@landley.net>
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3
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4 CFLAGS := $(CFLAGS) -Wall -Wundef -Wno-char-subscripts -Os
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5 CCFLAGS = $(CFLAGS) -funsigned-char
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6 CC = $(CROSS_COMPILE)gcc
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7 STRIP = $(CROSS_COMPILE)strip
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8 HOSTCC = gcc
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10 # A synonym.
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11 CROSS_COMPILE = $(CROSS)
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13 all: toybox
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15 .PHONY: clean
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17 include kconfig/Makefile
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19 # defconfig is the "maximum sane config"; allyesconfig minus debugging and such.
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20 #defconfig: allyesconfig
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21 # @sed -i -r -e "s/^(CONFIG_TOYBOX_(DEBUG|FREE))=.*/# \1 is not set/" .config
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23 .config: Config.in toys/Config.in
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25 # The long and roundabout sed is to make old versions of sed happy. New ones
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26 # have '\n' so can replace one line with two without all the branches and
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27 # mucking about with hold space.
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28 gen_config.h: .config
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29 sed -n -e 's/^# CONFIG_\(.*\) is not set.*/\1/' \
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30 -e 't notset' -e 'b tryisset' -e ':notset' \
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31 -e 'h' -e 's/.*/#define CFG_& 0/p' \
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32 -e 'g' -e 's/.*/#define USE_&(...)/p' -e 'd' -e ':tryisset' \
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33 -e 's/^CONFIG_\(.*\)=y.*/\1/' -e 't isset' -e 'd' -e ':isset' \
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34 -e 'h' -e 's/.*/#define CFG_& 1/p' \
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35 -e 'g' -e 's/.*/#define USE_&(...) __VA_ARGS__/p' $< > $@
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37 # Development targets
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38 baseline: toybox_unstripped
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39 @cp toybox_unstripped toybox_old
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40
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41 bloatcheck: toybox_old toybox_unstripped
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42 @scripts/bloat-o-meter toybox_old toybox_unstripped
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44 # Get list of .c files to compile, including toys/*.c files from .config
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45 toyfiles = main.c lib/*.c \
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46 $(shell scripts/cfg2files.sh < .config | sed 's@\(.*\)@toys/\1.c@')
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48 toybox_unstripped: gen_config.h $(toyfiles) toys/toylist.h lib/*.h toys.h
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49 $(CC) $(CCFLAGS) -I . $(toyfiles) -o toybox_unstripped \
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50 -ffunction-sections -fdata-sections -Wl,--gc-sections
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52 toybox: toybox_unstripped
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53 $(STRIP) toybox_unstripped -o toybox
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55 toys/help.c: toys/help.h
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57 toys/help.h: Config.in toys/Config.in scripts/config2help.py
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58 scripts/config2help.py Config.in > toys/help.h
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60 instlist: toybox
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61 $(HOSTCC) $(CCFLAGS) -I . scripts/install.c -o instlist
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63 install_flat: instlist
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64 @mkdir -p $(PREFIX)/
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65 @cp toybox $(PREFIX)/
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66 @for i in `./instlist`; do ln -s toybox "$(PREFIX)/$$i"; done
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68 clean::
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69 rm -f toybox toybox_old toybox_unstripped gen_config.h instlist
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71 distclean: clean
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72 rm -f .config*
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74 test: tests
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76 tests:
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77 scripts/testall.sh
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79 help::
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80 @echo ' baseline - Create busybox_old for use by bloatcheck.'
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81 @echo ' bloatcheck - Report size differences between old and current versions'