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setup.sh: avoid subshells: mapOffset

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This commit is contained in:
Albert Safin 2019-09-19 09:48:15 +00:00
parent 6f024f6e65
commit d53920a5be
1 changed files with 6 additions and 5 deletions
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11
pkgs/stdenv/generic/setup.sh
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@ -403,6 +403,7 @@ findInputs() {
# The current package's host and target offset together
# provide a <=-preserving homomorphism from the relative
# offsets to current offset
local -i mapOffsetResult
function mapOffset() {
local -ri inputOffset="$1"
if (( "$inputOffset" <= 0 )); then
@ -410,7 +411,7 @@ findInputs() {
else
local -ri outputOffset="$inputOffset - 1 + $targetOffset"
fi
echo "$outputOffset"
mapOffsetResult="$outputOffset"
}
# Host offset relative to that of the package whose immediate
@ -422,8 +423,8 @@ findInputs() {
# Host offset relative to the package currently being
# built---as absolute an offset as will be used.
local -i hostOffsetNext
hostOffsetNext="$(mapOffset relHostOffset)"
mapOffset relHostOffset
local -i hostOffsetNext="$mapOffsetResult"
# Ensure we're in bounds relative to the package currently
# being built.
@ -441,8 +442,8 @@ findInputs() {
# Target offset relative to the package currently being
# built.
local -i targetOffsetNext
targetOffsetNext="$(mapOffset relTargetOffset)"
mapOffset relTargetOffset
local -i targetOffsetNext="$mapOffsetResult"
# Once again, ensure we're in bounds relative to the
# package currently being built.