forked from mirrors/nixpkgs
5fad67d361
llvm uses response files in bootstrapping. It’s okay for them to happen even though we don’t use expandResponseParams here right now.
93 lines
2.7 KiB
Bash
93 lines
2.7 KiB
Bash
# Accumulate infixes for taking in the right input parameters with the `mangle*`
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# functions below. See setup-hook for details.
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accumulateRoles() {
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declare -ga role_infixes=()
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if [ "${NIX_@wrapperName@_@infixSalt@_TARGET_BUILD:-}" ]; then
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role_infixes+=(_BUILD_)
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fi
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if [ "${NIX_@wrapperName@_@infixSalt@_TARGET_HOST:-}" ]; then
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role_infixes+=(_)
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fi
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if [ "${NIX_@wrapperName@_@infixSalt@_TARGET_TARGET:-}" ]; then
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role_infixes+=(_TARGET_)
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fi
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}
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mangleVarList() {
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local var="$1"
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shift
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local -a role_infixes=("$@")
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local outputVar="${var/+/_@infixSalt@_}"
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declare -gx ${outputVar}+=''
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# For each role we serve, we accumulate the input parameters into our own
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# cc-wrapper-derivation-specific environment variables.
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for infix in "${role_infixes[@]}"; do
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local inputVar="${var/+/${infix}}"
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if [ -v "$inputVar" ]; then
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export ${outputVar}+="${!outputVar:+ }${!inputVar}"
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fi
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done
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}
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mangleVarBool() {
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local var="$1"
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shift
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local -a role_infixes=("$@")
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local outputVar="${var/+/_@infixSalt@_}"
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declare -gxi ${outputVar}+=0
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for infix in "${role_infixes[@]}"; do
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local inputVar="${var/+/${infix}}"
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if [ -v "$inputVar" ]; then
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# "1" in the end makes `let` return success error code when
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# expression itself evaluates to zero.
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# We don't use `|| true` because that would silence actual
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# syntax errors from bad variable values.
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let "${outputVar} |= ${!inputVar:-0}" "1"
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fi
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done
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}
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skip () {
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if (( "${NIX_DEBUG:-0}" >= 1 )); then
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echo "skipping impure path $1" >&2
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fi
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}
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# Checks whether a path is impure. E.g., `/lib/foo.so' is impure, but
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# `/nix/store/.../lib/foo.so' isn't.
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badPath() {
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local p=$1
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# Relative paths are okay (since they're presumably relative to
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# the temporary build directory).
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if [ "${p:0:1}" != / ]; then return 1; fi
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# Otherwise, the path should refer to the store or some temporary
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# directory (including the build directory).
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test \
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"$p" != "/dev/null" -a \
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"${p:0:${#NIX_STORE}}" != "$NIX_STORE" -a \
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"${p:0:4}" != "/tmp" -a \
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"${p:0:${#NIX_BUILD_TOP}}" != "$NIX_BUILD_TOP"
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}
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expandResponseParams() {
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declare -ga params=("$@")
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local arg
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for arg in "$@"; do
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if [[ "$arg" == @* ]]; then
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# phase separation makes this look useless
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# shellcheck disable=SC2157
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if [ -x "@expandResponseParams@" ]; then
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# params is used by caller
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#shellcheck disable=SC2034
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readarray -d '' params < <("@expandResponseParams@" "$@")
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return 0
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fi
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fi
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done
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}
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