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#!/bin/bash
# Build a standalone toybox command
if [ -z "$1" ]
then
echo "usage: single.sh command..." >&2
exit 1
fi
# Add trailing / to PREFIX when it's set but hasn't got one
[ "$PREFIX" == "${PREFIX%/}" ] && PREFIX="${PREFIX:+$PREFIX/}"
# Harvest TOYBOX_* symbols from .config
if [ ! -e .config ]
then
echo "Need .config for toybox global settings. Run defconfig/menuconfig." >&2
exit 1
fi
# Force dependencies to rebuild headers if we build multiplexer after this.
touch -c .config
export KCONFIG_CONFIG=.singleconfig
for i in "$@"
do
echo -n "$i:"
TOYFILE="$(egrep -l "TOY[(]($i)[ ,]" toys/*/*.c)"
if [ -z "$TOYFILE" ]
then
echo "Unknown command '$i'" >&2
exit 1
fi
# Enable stuff this command depends on
DEPENDS="$(sed -n "/^config *$i"'$/,/^$/{s/^[ \t]*depends on //;T;s/[!][A-Z0-9_]*//g;s/ *&& */|/g;p}' $TOYFILE | xargs | tr ' ' '|')"
NAME=$(echo $i | tr a-z- A-Z_)
make allnoconfig > /dev/null &&
sed -ri -e '/CONFIG_TOYBOX/d' \
-e "s/# (CONFIG_($NAME|${NAME}_.*${DEPENDS:+|$DEPENDS})) is not set/\1=y/" \
"$KCONFIG_CONFIG" &&
echo "# CONFIG_TOYBOX is not set" >> "$KCONFIG_CONFIG" &&
grep "CONFIG_TOYBOX_" .config >> "$KCONFIG_CONFIG" &&
export OUTNAME="$PREFIX$i"
rm -f "$OUTNAME" &&
scripts/make.sh || exit 1
done
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