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cc-wrapper: use a temporary file for reponse file

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The Darwin stdenv rework conditionally sets `NIX_CC_USE_RESPONSE_FILE`
depending on the `ARG_MAX` of the build system. If it is at least 1 MiB,
the stdenv passes the arguments on the command-line (like Linux).
Otherwise, it falls back to the response file. This was done to prevent
intermitent failures with clang 16 being unable to read the response
file. Unfortunately, this breaks `gccStdenv` on older Darwin platforms.

Note: While the stdenv logic will also be reverted, this change is
needed for compatibility with clang 16.

GCC is capable of using a response file, but it does not work correctly
when the response file is a file descriptor. This can be reproduced
using the following sequence of commands:

    $ nix shell nixpkgs#gcc; NIX_CC_USE_RESPONSE_FILE=1 gcc
    # Linux
    /nix/store/9n9gjvzci75gp2sh1c4rh626dhizqynl-binutils-2.39/bin/ld: unrecognized option '-B/nix/store/vnwdak3n1w2jjil119j65k8mw1z23p84-glibc-2.35-224/lib/'
    /nix/store/9n9gjvzci75gp2sh1c4rh626dhizqynl-binutils-2.39/bin/ld: use the --help option for usage information
    collect2: error: ld returned 1 exit status
    # Darwin
    ld: unknown option: -mmacosx-version-min=11.0
    collect2: error: ld returned 1 exit status

Instead of using process substitution, create a temporary file and
remove it in a trap. This should also prevent the intermitent build
failures with clang 16 on older Darwin systems.

Fixes #245167
This commit is contained in:
Randy Eckenrode 2023-07-24 17:07:50 -04:00 committed by Weijia Wang
parent 344ec16d0a
commit 6f2b3ba027
1 changed files with 5 additions and 2 deletions
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7
pkgs/build-support/cc-wrapper/cc-wrapper.sh
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@ -246,10 +246,13 @@ if [[ -e @out@/nix-support/cc-wrapper-hook ]]; then
fi
if (( "${NIX_CC_USE_RESPONSE_FILE:-@use_response_file_by_default@}" >= 1 )); then
exec @prog@ @<(printf "%q\n" \
responseFile=$(mktemp --tmpdir cc-params.XXXXXX)
trap 'rm -f -- "$responseFile"' EXIT
printf "%q\n" \
${extraBefore+"${extraBefore[@]}"} \
${params+"${params[@]}"} \
${extraAfter+"${extraAfter[@]}"})
${extraAfter+"${extraAfter[@]}"} > "$responseFile"
@prog@ "@$responseFile"
else
exec @prog@ \
${extraBefore+"${extraBefore[@]}"} \