nixpkgs/pkgs/build-support/cc-wrapper/utils.sh
Vladimír Čunát f5ce8f86df
Revert "Merge staging at '8d490ca9934d0' into master"
This reverts commit fc232422201c0364dbd57826c9a137cc1239caea, reversing
changes made to 754816b84b98afdc0727e13dd66e1698b097de6a.
We don't have many binaries yet.  Comment on the original merge commit.
2018-02-26 22:53:18 +01:00

81 lines
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mangleVarList() {
local var="$1"
shift
local -a role_infixes=("$@")
local outputVar="${var/+/_@infixSalt@_}"
declare -gx ${outputVar}+=''
# For each role we serve, we accumulate the input parameters into our own
# cc-wrapper-derivation-specific environment variables.
for infix in "${role_infixes[@]}"; do
local inputVar="${var/+/${infix}}"
if [ -v "$inputVar" ]; then
export ${outputVar}+="${!outputVar:+ }${!inputVar}"
fi
done
}
mangleVarBool() {
local var="$1"
shift
local -a role_infixes=("$@")
local outputVar="${var/+/_@infixSalt@_}"
declare -gxi ${outputVar}+=0
for infix in "${role_infixes[@]}"; do
local inputVar="${var/+/${infix}}"
if [ -v "$inputVar" ]; then
# "1" in the end makes `let` return success error code when
# expression itself evaluates to zero.
# We don't use `|| true` because that would silence actual
# syntax errors from bad variable values.
let "${outputVar} |= ${!inputVar:-0}" "1"
fi
done
}
skip () {
if (( "${NIX_DEBUG:-0}" >= 1 )); then
echo "skipping impure path $1" >&2
fi
}
# Checks whether a path is impure. E.g., `/lib/foo.so' is impure, but
# `/nix/store/.../lib/foo.so' isn't.
badPath() {
local p=$1
# Relative paths are okay (since they're presumably relative to
# the temporary build directory).
if [ "${p:0:1}" != / ]; then return 1; fi
# Otherwise, the path should refer to the store or some temporary
# directory (including the build directory).
test \
"$p" != "/dev/null" -a \
"${p:0:${#NIX_STORE}}" != "$NIX_STORE" -a \
"${p:0:4}" != "/tmp" -a \
"${p:0:${#NIX_BUILD_TOP}}" != "$NIX_BUILD_TOP"
}
expandResponseParams() {
declare -ga params=("$@")
local arg
for arg in "$@"; do
if [[ "$arg" == @* ]]; then
# phase separation makes this look useless
# shellcheck disable=SC2157
if [ -x "@expandResponseParams@" ]; then
# params is used by caller
#shellcheck disable=SC2034
readarray -d '' params < <("@expandResponseParams@" "$@")
return 0
else
echo "Response files aren't supported during bootstrapping" >&2
return 1
fi
fi
done
}