blob: d5f7b9488eb3b00271d138025c6f56707f7ac2dc
| 1 | #!/bin/sh |
| 2 | |
| 3 | # Note: was using sed OPTS CMD -- FILES |
| 4 | # but users complain that many sed implementations |
| 5 | # are misinterpreting --. |
| 6 | |
| 7 | test $# -ge 2 || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; } |
| 8 | |
| 9 | # cd to objtree |
| 10 | cd -- "$2" || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; } |
| 11 | # In separate objtree build, include/ might not exist yet |
| 12 | mkdir include 2>/dev/null |
| 13 | |
| 14 | srctree="$1" |
| 15 | |
| 16 | status() { printf ' %-8s%s\n' "$1" "$2"; } |
| 17 | gen() { status "GEN" "$@"; } |
| 18 | chk() { status "CHK" "$@"; } |
| 19 | |
| 20 | # On OSX the sed implementation is not compatible with some of the |
| 21 | # features in this script, so this uses gsed and warns the user if |
| 22 | # it does not exist. |
| 23 | UNAME=$(uname -sm) |
| 24 | case "$UNAME" in |
| 25 | *Darwin*|*Macintosh*) |
| 26 | SED_IMPL=$(which gsed) |
| 27 | if [ $? != 0 ]; then |
| 28 | echo "GNU sed is required for Darwin builds, please install and add 'gsed' to the path" |
| 29 | exit 1; |
| 30 | fi |
| 31 | ;; |
| 32 | *) |
| 33 | SED_IMPL=sed |
| 34 | esac |
| 35 | |
| 36 | generate() |
| 37 | { |
| 38 | # NB: data to be inserted at INSERT line is coming on stdin |
| 39 | local src="$1" dst="$2" header="$3" |
| 40 | #chk "${dst}" |
| 41 | { |
| 42 | # Need to use printf: different shells have inconsistent |
| 43 | # rules re handling of "\n" in echo params. |
| 44 | printf "%s\n" "${header}" |
| 45 | # print everything up to INSERT line |
| 46 | $SED_IMPL -n '/^INSERT$/ q; p' "${src}" |
| 47 | # copy stdin to stdout |
| 48 | cat |
| 49 | # print everything after INSERT line |
| 50 | $SED_IMPL -n '/^INSERT$/ { :l; n; p; bl }' "${src}" |
| 51 | } >"${dst}.tmp" |
| 52 | if ! cmp -s "${dst}" "${dst}.tmp"; then |
| 53 | gen "${dst}" |
| 54 | mv "${dst}.tmp" "${dst}" |
| 55 | else |
| 56 | rm -f "${dst}.tmp" |
| 57 | fi |
| 58 | } |
| 59 | |
| 60 | # (Re)generate include/applets.h |
| 61 | $SED_IMPL -n 's@^//applet:@@p' "$srctree"/*/*.c "$srctree"/*/*/*.c \ |
| 62 | | generate \ |
| 63 | "$srctree/include/applets.src.h" \ |
| 64 | "include/applets.h" \ |
| 65 | "/* DO NOT EDIT. This file is generated from applets.src.h */" |
| 66 | |
| 67 | # (Re)generate include/usage.h |
| 68 | # We add line continuation backslash after each line, |
| 69 | # and insert empty line before each line which doesn't start |
| 70 | # with space or tab |
| 71 | $SED_IMPL -n -e 's@^//usage:\([ \t].*\)$@\1 \\@p' -e 's@^//usage:\([^ \t].*\)$@\n\1 \\@p' \ |
| 72 | "$srctree"/*/*.c "$srctree"/*/*/*.c \ |
| 73 | | generate \ |
| 74 | "$srctree/include/usage.src.h" \ |
| 75 | "include/usage.h" \ |
| 76 | "/* DO NOT EDIT. This file is generated from usage.src.h */" |
| 77 | |
| 78 | # (Re)generate */Kbuild and */Config.in |
| 79 | # We skip .dotdirs - makes git/svn/etc users happier |
| 80 | { cd -- "$srctree" && find . -type d -not '(' -name '.?*' -prune ')'; } \ |
| 81 | | while read -r d; do |
| 82 | d="${d#./}" |
| 83 | |
| 84 | src="$srctree/$d/Kbuild.src" |
| 85 | dst="$d/Kbuild" |
| 86 | if test -f "$src"; then |
| 87 | mkdir -p -- "$d" 2>/dev/null |
| 88 | |
| 89 | $SED_IMPL -n 's@^//kbuild:@@p' "$srctree/$d"/*.c \ |
| 90 | | generate \ |
| 91 | "${src}" "${dst}" \ |
| 92 | "# DO NOT EDIT. This file is generated from Kbuild.src" |
| 93 | fi |
| 94 | |
| 95 | src="$srctree/$d/Config.src" |
| 96 | dst="$d/Config.in" |
| 97 | if test -f "$src"; then |
| 98 | mkdir -p -- "$d" 2>/dev/null |
| 99 | |
| 100 | $SED_IMPL -n 's@^//config:@@p' "$srctree/$d"/*.c \ |
| 101 | | generate \ |
| 102 | "${src}" "${dst}" \ |
| 103 | "# DO NOT EDIT. This file is generated from Config.src" |
| 104 | fi |
| 105 | done |
| 106 | |
| 107 | # Last read failed. This is normal. Don't exit with its error code: |
| 108 | exit 0 |
| 109 |