forked from mirrors/nixpkgs
1ac5398589
I hate the thing too even though I made it, and rather just get rid of it. But we can't do that yet. In the meantime, this brings us more inline with autoconf and will make it slightly easier for me to write a pkg-config wrapper, which we need.
93 lines
2.8 KiB
Bash
93 lines
2.8 KiB
Bash
# Accumulate suffixes 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_suffixes=()
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if [ "${NIX_@wrapperName@_TARGET_BUILD_@suffixSalt@:-}" ]; then
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role_suffixes+=('_FOR_BUILD')
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fi
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if [ "${NIX_@wrapperName@_TARGET_HOST_@suffixSalt@:-}" ]; then
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role_suffixes+=('')
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fi
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if [ "${NIX_@wrapperName@_TARGET_TARGET_@suffixSalt@:-}" ]; then
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role_suffixes+=('_FOR_TARGET')
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fi
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}
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mangleVarList() {
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local var="$1"
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shift
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local -a role_suffixes=("$@")
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local outputVar="${var}_@suffixSalt@"
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declare -gx ${outputVar}+=''
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# For each role we serve, we accumulate the input parameters into our own
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# cc-wrapper-derivation-specific environment variables.
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for suffix in "${role_suffixes[@]}"; do
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local inputVar="${var}${suffix}"
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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="$1"
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shift
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local -a role_suffixes=("$@")
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local outputVar="${var}_@suffixSalt@"
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declare -gxi ${outputVar}+=0
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for suffix in "${role_suffixes[@]}"; do
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local inputVar="${var}${suffix}"
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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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