1 | #!/bin/sh
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2 |
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3 | # Note: was using sed OPTS CMD -- FILES
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4 | # but users complain that many sed implementations
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5 | # are misinterpreting --.
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6 |
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7 | test $# -ge 2 || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; }
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8 |
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9 | # cd to objtree
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10 | cd -- "$2" || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; }
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11 | # In separate objtree build, include/ might not exist yet
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12 | mkdir include 2>/dev/null
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13 |
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14 | srctree="$1"
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15 |
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16 | status() { printf ' %-8s%s\n' "$1" "$2"; }
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17 | gen() { status "GEN" "$@"; }
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18 | chk() { status "CHK" "$@"; }
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19 |
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20 | generate()
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21 | {
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22 | # NB: data to be inserted at INSERT line is coming on stdin
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23 | local src="$1" dst="$2" header="$3"
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24 | #chk "${dst}"
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25 | {
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26 | # Need to use printf: different shells have inconsistent
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27 | # rules re handling of "\n" in echo params.
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28 | printf "%s\n" "${header}"
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29 | # print everything up to INSERT line
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30 | sed -n '/^INSERT$/ q; p' "${src}"
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31 | # copy stdin to stdout
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32 | cat
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33 | # print everything after INSERT line
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34 | sed -n '/^INSERT$/ { :l; n; p; bl }' "${src}"
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35 | } >"${dst}.tmp"
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36 | if ! cmp -s "${dst}" "${dst}.tmp"; then
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37 | gen "${dst}"
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38 | mv "${dst}.tmp" "${dst}"
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39 | else
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40 | rm -f "${dst}.tmp"
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41 | fi
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42 | }
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43 |
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44 | # (Re)generate include/applets.h
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45 | sed -n 's@^//applet:@@p' "$srctree"/*/*.c "$srctree"/*/*/*.c \
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46 | | generate \
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47 | "$srctree/include/applets.src.h" \
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48 | "include/applets.h" \
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49 | "/* DO NOT EDIT. This file is generated from applets.src.h */"
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50 |
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51 | # (Re)generate include/usage.h
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52 | # We add line continuation backslash after each line,
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53 | # and insert empty line before each line which doesn't start
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54 | # with space or tab
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55 | sed -n -e 's@^//usage:\([ \t].*\)$@\1 \\@p' -e 's@^//usage:\([^ \t].*\)$@\n\1 \\@p' \
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56 | "$srctree"/*/*.c "$srctree"/*/*/*.c \
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57 | | generate \
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58 | "$srctree/include/usage.src.h" \
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59 | "include/usage.h" \
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60 | "/* DO NOT EDIT. This file is generated from usage.src.h */"
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61 |
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62 | # (Re)generate */Kbuild and */Config.in
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63 | # We skip .dotdirs - makes git/svn/etc users happier
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64 | { cd -- "$srctree" && find . -type d -not '(' -name '.?*' -prune ')'; } \
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65 | | while read -r d; do
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66 | d="${d#./}"
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67 |
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68 | src="$srctree/$d/Kbuild.src"
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69 | dst="$d/Kbuild"
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70 | if test -f "$src"; then
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71 | mkdir -p -- "$d" 2>/dev/null
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72 |
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73 | sed -n 's@^//kbuild:@@p' "$srctree/$d"/*.c \
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74 | | generate \
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75 | "${src}" "${dst}" \
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76 | "# DO NOT EDIT. This file is generated from Kbuild.src"
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77 | fi
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78 |
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79 | src="$srctree/$d/Config.src"
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80 | dst="$d/Config.in"
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81 | if test -f "$src"; then
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82 | mkdir -p -- "$d" 2>/dev/null
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83 |
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84 | sed -n 's@^//config:@@p' "$srctree/$d"/*.c \
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85 | | generate \
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86 | "${src}" "${dst}" \
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87 | "# DO NOT EDIT. This file is generated from Config.src"
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88 | fi
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89 | done
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90 |
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91 | # Last read failed. This is normal. Don't exit with its error code:
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92 | exit 0
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