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gen_build_files: don't pass 200k+ strings as params. Closes 4321

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Also removes one grep per generated file.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2011-10-19 17:54:42 +02:00
parent f74f280a14
commit efd08bfa0a
1 changed files with 23 additions and 33 deletions
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56
scripts/gen_build_files.sh
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@ -19,25 +19,20 @@ chk() { status "CHK" "$@"; }
generate()
{
local src="$1" dst="$2" header="$3" insert="$4"
# NB: data to be inserted at INSERT line is coming on stdin
local src="$1" dst="$2" header="$3"
#chk "${dst}"
(
{
# Need to use printf: different shells have inconsistent
# rules re handling of "\n" in echo params,
# and ${insert} definitely contains "\n".
# Therefore, echo "${header}" would not work:
# rules re handling of "\n" in echo params.
printf "%s\n" "${header}"
if grep -qs '^INSERT$' "${src}"; then
sed -n '1,/^INSERT$/p' "${src}"
printf "%s\n" "${insert}"
sed -n '/^INSERT$/,$p' "${src}"
else
if [ -n "${insert}" ]; then
printf "%s\n" "ERROR: INSERT line missing in: ${src}" 1>&2
fi
cat "${src}"
fi
) | sed '/^INSERT$/d' > "${dst}.tmp"
# print everything up to INSERT line
sed -n '/^INSERT$/q;1,/^INSERT$/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" "${dst}"
@ -47,24 +42,21 @@ generate()
}
# (Re)generate include/applets.h
s=`sed -n 's@^//applet:@@p' "$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 \
sed -n -e 's@^//usage:\([ \t].*\)$@\1 \\@p' -e 's@^//usage:\([^ \t].*\)$@\n\1 \\@p' "$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
@ -75,11 +67,10 @@ generate \
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/$d/Config.src"
@ -87,11 +78,10 @@ generate \
if test -f "$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