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#!/bin/sh
test $# -ge 2 || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; }
# cd to objtree
cd -- "$2" || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; }
srctree="$1"
# (Re)generate include/applets.h
src="$srctree/include/applets.src.h"
dst="include/applets.h"
s=`sed -n 's@^//applet:@@p' -- */*.c */*/*.c`
echo "/* DO NOT EDIT. This file is generated from applets.src.h */" >"$dst.$$.tmp"
# Why "IFS='' read -r REPLY"??
# This atrocity is needed to read lines without mangling.
# IFS='' prevents whitespace trimming,
# -r suppresses backslash handling.
while IFS='' read -r REPLY; do
test x"$REPLY" = x"INSERT" && REPLY="$s"
printf "%s\n" "$REPLY"
done <"$src" >>"$dst.$$.tmp"
if test -f "$dst" && cmp -s "$dst.$$.tmp" "$dst"; then
rm -- "$dst.$$.tmp"
else
echo " GEN $dst"
mv -- "$dst.$$.tmp" "$dst"
fi
# (Re)generate */Kbuild and */Config.in
find -type d | while read -r d; do
d="${d#./}"
src="$srctree/$d/Kbuild.src"
dst="$d/Kbuild"
if test -f "$src"; then
#echo " CHK $dst"
s=`sed -n 's@^//kbuild:@@p' -- "$srctree/$d"/*.c`
echo "# DO NOT EDIT. This file is generated from Kbuild.src" >"$dst.$$.tmp"
while IFS='' read -r REPLY; do
test x"$REPLY" = x"INSERT" && REPLY="$s"
printf "%s\n" "$REPLY"
done <"$src" >>"$dst.$$.tmp"
if test -f "$dst" && cmp -s "$dst.$$.tmp" "$dst"; then
rm -- "$dst.$$.tmp"
else
echo " GEN $dst"
mv -- "$dst.$$.tmp" "$dst"
fi
fi
src="$srctree/$d/Config.src"
dst="$d/Config.in"
if test -f "$src"; then
#echo " CHK $dst"
s=`sed -n 's@^//config:@@p' -- "$srctree/$d"/*.c`
echo "# DO NOT EDIT. This file is generated from Config.src" >"$dst.$$.tmp"
while IFS='' read -r REPLY; do
test x"$REPLY" = x"INSERT" && REPLY="$s"
printf "%s\n" "$REPLY"
done <"$src" >>"$dst.$$.tmp"
if test -f "$dst" && cmp -s "$dst.$$.tmp" "$dst"; then
rm -- "$dst.$$.tmp"
else
echo " GEN $dst"
mv -- "$dst.$$.tmp" "$dst"
fi
fi
done
# Last read failed. This is normal. Don't exit with its error code:
exit 0
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