ld-wrapper: use a temporary file for reponse file

This changes ld-wrapper to use a temporary file for the response file
passed to ld instead of using process substitution.

ld64 does not handle long command-lines when reading from the response
file, which defeats the point of using a response file to handle long
command-lines. cctools-port was patched to work around this, but nixpkgs
is now using Apple’s source release directly instead of the port.

Since it’s preferable not to patch Apple’s release heavily (to reduce
the difficulty of updating to new versions and to match upstream’s
behavior), use the approach that was adopted in cc-wrapper to work
around issues with response files in newer versions of clang.

Related PRs (cctools-port):
- #213831
- tpoechtrager/cctools-port#132

Related PRs (cc-wrapper):
- #245282
- #258608

pkgs/build-support/bintools-wrapper/ld-wrapper.sh

@@ -257,10 +257,13 @@ PATH="$path_backup"
 # Old bash workaround, see above.
 
 if (( "${NIX_LD_USE_RESPONSE_FILE:-@use_response_file_by_default@}" >= 1 )); then
-    @prog@ @<(printf "%q\n" \
-        ${extraBefore+"${extraBefore[@]}"} \
-        ${params+"${params[@]}"} \
-        ${extraAfter+"${extraAfter[@]}"})
+    responseFile=$(mktemp "${TMPDIR:-/tmp}/ld-params.XXXXXX")
+    trap 'rm -f -- "$responseFile"' EXIT
+    printf "%q\n" \
+       ${extraBefore+"${extraBefore[@]}"} \
+       ${params+"${params[@]}"} \
+       ${extraAfter+"${extraAfter[@]}"} > "$responseFile"
+    @prog@ "@$responseFile"
 else
     @prog@ \
         ${extraBefore+"${extraBefore[@]}"} \