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annotate scripts/make.sh @ 481:e1b9a8579ddb

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mkswap helpstring and argument string
author Elie De Brauwer <eliedebrauwer@gmail.com>
date Sat, 18 Feb 2012 14:13:55 +0100
parents f59b4b6bde5e
children 9bcc288a1c54
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of
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1 #!/bin/bash
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2
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3 # Grab default values for $CFLAGS and such.
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4
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5 source ./configure
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6
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7 echo "Extract configuration information from toys/*.c files..."
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8 scripts/genconfig.sh
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9
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10 echo "Generate headers from toys/*.h..."
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11
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163498bf547b Move NEWTOY() list from end of toylist.h to generated/newtoys.h.
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12 # Create a list of all the applets toybox can provide. Note that the first
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13 # entry is out of order on purpose (the toybox multiplexer applet must be the
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14 # first element of the array). The rest must be sorted in alphabetical order
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15 # for fast binary search.
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16
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17 function newtoys()
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18 {
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19 for i in toys/*.c
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20 do
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21 sed -n -e '1,/^config [A-Z]/s/^USE_/&/p' $i || exit 1
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22 done
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23 }
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24 echo "NEWTOY(toybox, NULL, 0)" > generated/newtoys.h
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25 newtoys | sed 's/\(.*TOY(\)\([^,]*\),\(.*\)/\2 \1\2,\3/' | sort -k 1,1 \
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26 | sed 's/[^ ]* //' >> generated/newtoys.h
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27
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28 # Extract global structure definitions from toys/*.c
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29
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30 function getglobals()
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31 {
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32 for i in toys/*.c
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33 do
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34 NAME="$(echo $i | sed 's@toys/\(.*\)\.c@\1@')"
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35
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36 echo -e "// $i\n"
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37 sed -n -e '/^DEFINE_GLOBALS(/,/^)/b got;b;:got' \
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38 -e 's/^DEFINE_GLOBALS(/struct '"$NAME"'_data {/' \
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39 -e 's/^)/};/' -e 'p' $i
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40 done
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41 }
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42
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43 GLOBSTRUCT="$(getglobals)"
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44 (
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45 echo "$GLOBSTRUCT"
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46 echo
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47 echo "extern union global_union {"
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48 echo "$GLOBSTRUCT" | sed -n 's/struct \(.*\)_data {/ struct \1_data \1;/p'
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49 echo "} this;"
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50 ) > generated/globals.h
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51
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52 # Only recreate generated/help.h if python is installed
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53 if [ ! -z "$(which python)" ] && [ ! -z "$(grep 'CONFIG_HELP=y' .config)" ]
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54 then
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55 echo "Extract help text from Config.in."
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56 scripts/config2help.py Config.in > generated/help.h || exit 1
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57 fi
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58
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59 echo "Make generated/config.h from .config."
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60
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61 # This long and roundabout sed invocation is to make old versions of sed happy.
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62 # New ones have '\n' so can replace one line with two without all the branches
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63 # and tedious mucking about with hold space.
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64
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65 sed -n \
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66 -e 's/^# CONFIG_\(.*\) is not set.*/\1/' \
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67 -e 't notset' \
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68 -e 's/^CONFIG_\(.*\)=y.*/\1/' \
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69 -e 't isset' \
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52e980b216d3 Convert non-bool config values (such as int) into config.h entries.
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70 -e 's/^CONFIG_\([^=]*\)=\(.*\)/#define CFG_\1 \2/p' \
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71 -e 'd' \
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72 -e ':notset' \
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73 -e 'h' \
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74 -e 's/.*/#define CFG_& 0/p' \
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75 -e 'g' \
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76 -e 's/.*/#define USE_&(...)/p' \
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77 -e 'd' \
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78 -e ':isset' \
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79 -e 'h' \
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80 -e 's/.*/#define CFG_& 1/p' \
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81 -e 'g' \
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82 -e 's/.*/#define USE_&(...) __VA_ARGS__/p' \
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83 .config > generated/config.h || exit 1
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84
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85 # Extract a list of toys/*.c files to compile from the data in ".config" with
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86 # sed, sort, and tr:
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87
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88 # 1) Grab the XXX part of all CONFIG_XXX entries, removing everything after the
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89 # second underline
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90 # 2) Sort the list, keeping only one of each entry.
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91 # 3) Convert to lower case.
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92 # 4) Remove toybox itself from the list (as that indicates global symbols).
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93 # 5) Add "toys/" prefix and ".c" suffix.
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94
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95 TOYFILES=$(cat .config | sed -nre 's/^CONFIG_(.*)=y/\1/;t skip;b;:skip;s/_.*//;p' | sort -u | tr A-Z a-z | grep -v '^toybox$' | sed 's@\(.*\)@toys/\1.c@' )
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96
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97 echo "Compile toybox..."
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98
472
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99 do_loudly()
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100 {
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101 [ ! -z "$V" ] && echo "$@"
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102 "$@"
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103 }
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104
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105 do_loudly $CC $CFLAGS -I . -o toybox_unstripped $OPTIMIZE main.c lib/*.c \
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106 $TOYFILES -Wl,--as-needed,-lutil,--no-as-needed || exit 1
472
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107 do_loudly $STRIP toybox_unstripped -o toybox || exit 1
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108 # gcc 4.4's strip command is buggy, and doesn't set the executable bit on
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109 # its output the way SUSv4 suggests it do so.
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110 do_loudly chmod +x toybox || exit 1