2a9b3b4943
In a typical build environment the toolchain will use the value of the MACOSX_DEPLOYMENT_TARGET environment variable to determine the version of macOS to support. When cross compiling there are two distinct toolchains, but they will look at this single environment variable. To avoid contamination, we always set the equivalent command line flag which effectively disables the toolchain's internal handling. Prior to this change, the MACOSX_DEPLOYMENT_TARGET variable was ignored, and the toolchains always used the Nix platform definition (`darwinMinVersion`) unless overridden with command line arguments. This change restores support for MACOSX_DEPLOYMENT_TARGET, and adds nix-specific MACOSX_DEPLOYMENT_TARGET_FOR_BUILD and MACOSX_DEPLOYMENT_TARGET_FOR_TARGET for cross compilation.
125 lines
3.9 KiB
Bash
125 lines
3.9 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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# Combine a singular value from all roles. If multiple roles are being served,
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# and the value differs in these roles then the request is impossible to
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# satisfy and we abort immediately.
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mangleVarSingle() {
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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="${var}_@suffixSalt@"
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for suffix in "${role_suffixes[@]}"; do
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local inputVar="${var}${suffix}"
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if [ -v "$inputVar" ]; then
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if [ -v "$outputVar" ]; then
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if [ "${!outputVar}" != "${!inputVar}" ]; then
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{
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echo "Multiple conflicting values defined for $outputVar"
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echo "Existing value is ${!outputVar}"
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echo "Attempting to set to ${!inputVar} via $inputVar"
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} >&2
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exit 1
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fi
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else
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declare -gx ${outputVar}="${!inputVar}"
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fi
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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#${NIX_STORE}}" = "$p" -a \
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"${p#${NIX_BUILD_TOP}}" = "$p" -a \
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"${p#/tmp}" = "$p" -a \
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"${p#${TMP:-/tmp}}" = "$p" -a \
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"${p#${TMPDIR:-/tmp}}" = "$p" -a \
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"${p#${TEMP:-/tmp}}" = "$p" -a \
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"${p#${TEMPDIR:-/tmp}}" = "$p"
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}
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expandResponseParams() {
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declare -ga params=("$@")
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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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