100 lines
2.6 KiB
Bash
Executable File
100 lines
2.6 KiB
Bash
Executable File
#!/bin/sh
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# Note: was using sed OPTS CMD -- FILES
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# but users complain that many sed implementations
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# are misinterpreting --.
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test $# -ge 2 || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; }
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# cd to objtree
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cd -- "$2" || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; }
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# In separate objtree build, include/ might not exist yet
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mkdir include 2>/dev/null
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srctree="$1"
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status() { printf ' %-8s%s\n' "$1" "$2"; }
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gen() { status "GEN" "$@"; }
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chk() { status "CHK" "$@"; }
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generate()
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{
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local src="$1" dst="$2" header="$3" insert="$4"
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#chk "${dst}"
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(
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# Need to use printf: different shells have inconsistent
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# rules re handling of "\n" in echo params,
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# and ${insert} definitely contains "\n".
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# Therefore, echo "${header}" would not work:
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printf "%s\n" "${header}"
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if grep -qs '^INSERT$' "${src}"; then
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sed -n '1,/^INSERT$/p' "${src}"
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printf "%s\n" "${insert}"
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sed -n '/^INSERT$/,$p' "${src}"
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else
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if [ -n "${insert}" ]; then
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printf "%s\n" "ERROR: INSERT line missing in: ${src}" 1>&2
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fi
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cat "${src}"
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fi
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) | sed '/^INSERT$/d' > "${dst}.tmp"
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if ! cmp -s "${dst}" "${dst}.tmp"; then
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gen "${dst}"
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mv "${dst}.tmp" "${dst}"
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else
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rm -f "${dst}.tmp"
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fi
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}
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# (Re)generate include/applets.h
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s=`sed -n 's@^//applet:@@p' "$srctree"/*/*.c "$srctree"/*/*/*.c`
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generate \
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"$srctree/include/applets.src.h" \
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"include/applets.h" \
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"/* DO NOT EDIT. This file is generated from applets.src.h */" \
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"${s}"
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# (Re)generate include/usage.h
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# We add line continuation backslash after each line,
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# and insert empty line before each line which doesn't start
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# with space or tab
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# (note: we need to use \\\\ because of ``)
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s=`sed -n -e 's@^//usage:\([ \t].*\)$@\1 \\\\@p' -e 's@^//usage:\([^ \t].*\)$@\n\1 \\\\@p' "$srctree"/*/*.c "$srctree"/*/*/*.c`
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generate \
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"$srctree/include/usage.src.h" \
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"include/usage.h" \
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"/* DO NOT EDIT. This file is generated from usage.src.h */" \
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"${s}"
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# (Re)generate */Kbuild and */Config.in
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{ cd -- "$srctree" && find . -type d; } | while read -r d; do
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d="${d#./}"
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src="$srctree/$d/Kbuild.src"
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dst="$d/Kbuild"
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if test -f "$src"; then
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mkdir -p -- "$d" 2>/dev/null
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s=`sed -n 's@^//kbuild:@@p' "$srctree/$d"/*.c`
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generate \
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"${src}" "${dst}" \
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"# DO NOT EDIT. This file is generated from Kbuild.src" \
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"${s}"
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fi
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src="$srctree/$d/Config.src"
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dst="$d/Config.in"
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if test -f "$src"; then
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mkdir -p -- "$d" 2>/dev/null
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s=`sed -n 's@^//config:@@p' "$srctree/$d"/*.c`
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generate \
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"${src}" "${dst}" \
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"# DO NOT EDIT. This file is generated from Config.src" \
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"${s}"
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fi
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done
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# Last read failed. This is normal. Don't exit with its error code:
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exit 0
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