#!/bin/sh
+# Note: was using sed OPTS CMD -- FILES
+# but users complain that many sed implementations
+# are misinterpreting --.
+
test $# -ge 2 || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; }
# cd to objtree
generate()
{
- local src="$1" dst="$2" header="$3" insert="$4"
+ # NB: data to be inserted at INSERT line is coming on stdin
+ src="$1"
+ dst="$2"
+ header="$3"
#chk "${dst}"
- (
- echo "${header}"
- if grep -qs '^INSERT$' "${src}"; then
- sed -n '1,/^INSERT$/p' "${src}"
- echo "${insert}"
- sed -n '/^INSERT$/,$p' "${src}"
- else
- if [ -n "${insert}" ]; then
- echo "ERROR: INSERT line missing in: ${src}" 1>&2
- fi
- cat "${src}"
- fi
- ) | sed '/^INSERT$/d' > "${dst}.tmp"
+ {
+ # Need to use printf: different shells have inconsistent
+ # rules re handling of "\n" in echo params.
+ printf "%s\n" "${header}"
+ # print everything up to INSERT line
+ sed -n '/^INSERT$/ q; p' "${src}"
+ # copy stdin to stdout
+ cat
+ # print everything after INSERT line
+ sed -n '/^INSERT$/ {
+ :l
+ n
+ p
+ bl
+ }' "${src}"
+ } >"${dst}.tmp"
if ! cmp -s "${dst}" "${dst}.tmp"; then
gen "${dst}"
mv "${dst}.tmp" "${dst}"
}
# (Re)generate include/applets.h
-s=`sed -n 's@^//applet:@@p' -- "$srctree"/*/*.c "$srctree"/*/*/*.c`
-generate \
+sed -n 's@^//applet:@@p' "$srctree"/*/*.c "$srctree"/*/*/*.c \
+| generate \
"$srctree/include/applets.src.h" \
"include/applets.h" \
- "/* DO NOT EDIT. This file is generated from applets.src.h */" \
- "${s}"
+ "/* DO NOT EDIT. This file is generated from applets.src.h */"
# (Re)generate include/usage.h
# We add line continuation backslash after each line,
# and insert empty line before each line which doesn't start
# with space or tab
-# (note: we need to use \\\\ because of ``)
-s=`sed -n -e 's@^//usage:\([ \t].*\)$@\1 \\\\@p' -e 's@^//usage:\([^ \t].*\)$@\n\1 \\\\@p' -- "$srctree"/*/*.c "$srctree"/*/*/*.c`
-generate \
+TAB="$(printf '\tX')"
+TAB="${TAB%X}"
+LF="$(printf '\nX')"
+LF="${LF%X}"
+sed -n -e 's@^//usage:\([ '"$TAB"'].*\)$@\1 \\@p' \
+ -e 's@^//usage:\([^ '"$TAB"'].*\)$@\'"$LF"'\1 \\@p' \
+ "$srctree"/*/*.c "$srctree"/*/*/*.c \
+| generate \
"$srctree/include/usage.src.h" \
"include/usage.h" \
- "/* DO NOT EDIT. This file is generated from usage.src.h */" \
- "${s}"
+ "/* DO NOT EDIT. This file is generated from usage.src.h */"
# (Re)generate */Kbuild and */Config.in
-{ cd -- "$srctree" && find . -type d; } | while read -r d; do
+# We skip .dotdirs - makes git/svn/etc users happier
+{ cd -- "$srctree" && find . -type d ! '(' -name '.?*' -prune ')'; } \
+| while read -r d; do
d="${d#./}"
src="$srctree/$d/Kbuild.src"
if test -f "$src"; then
mkdir -p -- "$d" 2>/dev/null
- s=`sed -n 's@^//kbuild:@@p' -- "$srctree/$d"/*.c`
- generate \
+ sed -n 's@^//kbuild:@@p' "$srctree/$d"/*.c \
+ | generate \
"${src}" "${dst}" \
- "# DO NOT EDIT. This file is generated from Kbuild.src" \
- "${s}"
+ "# DO NOT EDIT. This file is generated from Kbuild.src"
fi
src="$srctree/$d/Config.src"
if test -f "$src"; then
mkdir -p -- "$d" 2>/dev/null
- s=`sed -n 's@^//config:@@p' -- "$srctree/$d"/*.c`
- generate \
+ sed -n 's@^//config:@@p' "$srctree/$d"/*.c \
+ | generate \
"${src}" "${dst}" \
- "# DO NOT EDIT. This file is generated from Config.src" \
- "${s}"
+ "# DO NOT EDIT. This file is generated from Config.src"
fi
done