void-packages/common/environment/setup/options.sh

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# vim: set ts=4 sw=4 et:
vopt_if() {
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local name="build_option_$1" t="$2" f="$3"
if [ ${!name} ]; then
echo -n "$t"
else
echo -n "$f"
fi
}
vopt_with() {
local opt="$1" flag="${2:-$1}"
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vopt_if "$opt" "--with-${flag}" "--without-${flag}"
}
vopt_enable() {
local opt="$1" flag="${2:-$1}"
if [ "$#" -gt "2" ]; then
msg_error "vopt_enable $opt: $(($# - 2)) excess parameter(s)\n"
fi
vopt_if "$1" "--enable-${flag}" "--disable-${flag}"
}
vopt_conflict() {
local opt1="$1" opt2="$2" n1="build_option_$1" n2="build_option_$2"
if [ "${!n1}" -a "${!n2}" ]; then
msg_error "options '${opt1}' and '${opt2}' conflict\n"
fi
}