cc-rs: Compilation in a macOS GitHub runner fails with cc v1.0.84

Hello!

For my crate opencv I see that starting with cc version 1.0.84 the macOS runners are failing: https://github.com/twistedfall/opencv-rust/actions/runs/6853515550

I must also note that I haven’t used cc versions 1.0.80..=1.0.83 because of the another issue that was causing hangs due to the interaction of jobserver in both cc and opencv (https://github.com/rust-lang/cc-rs/issues/844)

The specific error is:

fatal error: 'limits' file not found

it is caused by the missing stdlib which clang warns about too:

clang: warning: include path for libstdc++ headers not found; pass '-stdlib=libc++' on the command line to use the libc++ standard library instead [-Wstdlibcxx-not-found]

As far as I can see between version 1.0.79 and 1.0.84 the C++ compiler is called with different arguments:

• 1.0.79

"c++" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-gdwarf-2" "-fno-omit-frame-pointer" "-m64" "-arch" "x86_64" "-I" "/Users/runner/work/opencv-rust/opencv-rust/src_cpp" "-I" "/Users/runner/work/opencv-rust/opencv-rust/target/debug/build/opencv-fb8aea6a002a5c33/out" "-I" "." "-I" "/usr/local/opt/opencv/include/opencv4" "-Wall" "-Wextra" "-std=c++14" "-Wno-deprecated-declarations" "-Wno-deprecated-copy" "-Wno-unused-parameter" "-Wno-sign-compare" "-Wno-comment" "-Wno-unused-variable" "-Wno-ignored-qualifiers" "-Wno-return-type-c-linkage" "-Wno-overloaded-virtual" "-F/usr/local/opt/opencv/include/opencv4" "-o" "/Users/runner/work/opencv-rust/opencv-rust/target/debug/build/opencv-fb8aea6a002a5c33/out/d25e1c8da0c38997-core.o" "-c" "/Users/runner/work/opencv-rust/opencv-rust/target/debug/build/opencv-fb8aea6a002a5c33/out/core.cpp"

• 1.0.84

"c++" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-gdwarf-2" "-fno-omit-frame-pointer" "-m64" "--target=x86_64-apple-darwin" "-mmacosx-version-min=10.7" "-I" "/Users/runner/work/opencv-rust/opencv-rust/src_cpp" "-I" "/Users/runner/work/opencv-rust/opencv-rust/target/debug/build/opencv-80956898113978e8/out" "-I" "." "-I" "/usr/local/opt/opencv/include/opencv4" "-Wall" "-Wextra" "-std=c++14" "-o" "/Users/runner/work/opencv-rust/opencv-rust/target/debug/build/opencv-80956898113978e8/out/02e9e909b56518ad-core.o" "-c" "/Users/runner/work/opencv-rust/opencv-rust/target/debug/build/opencv-80956898113978e8/out/core.cpp"

The main differences I see is the -arch, --target, -mmacosx-version-min and a bunch of -W flags. The compiler identity looks different too:

• 1.0.79 identifiers as Gnu

=== Compiler information: Tool {
    path: "c++",
    cc_wrapper_path: None,
    cc_wrapper_args: [],
    args: [
        "-O0",
        "-ffunction-sections",
        "-fdata-sections",
        "-fPIC",
        "-gdwarf-2",
        "-fno-omit-frame-pointer",
        "-m64",
        "-arch",
        "x86_64",
        "-I",
        "/Users/runner/work/opencv-rust/opencv-rust/src_cpp",
        "-I",
        "/Users/runner/work/opencv-rust/opencv-rust/target/debug/build/opencv-fb8aea6a002a5c33/out",
        "-I",
        ".",
        "-I",
        "/usr/local/opt/opencv/include/opencv4",
        "-Wall",
        "-Wextra",
        "-std=c++14",
        "-Wno-deprecated-declarations",
        "-Wno-deprecated-copy",
        "-Wno-unused-parameter",
        "-Wno-sign-compare",
        "-Wno-comment",
        "-Wno-unused-variable",
        "-Wno-ignored-qualifiers",
        "-Wno-return-type-c-linkage",
        "-Wno-overloaded-virtual",
        "-F/usr/local/opt/opencv/include/opencv4",
    ],
    env: [],
    family: Gnu,
    cuda: false,
    removed_args: [],
}

• 1.0.84 identifies as Clang:

=== Compiler information: Tool {
    path: "c++",
    cc_wrapper_path: None,
    cc_wrapper_args: [],
    args: [
        "-O0",
        "-ffunction-sections",
        "-fdata-sections",
        "-fPIC",
        "-gdwarf-2",
        "-fno-omit-frame-pointer",
        "-m64",
        "--target=x86_64-apple-darwin",
        "-mmacosx-version-min=10.7",
        "-I",
        "/Users/runner/work/opencv-rust/opencv-rust/src_cpp",
        "-I",
        "/Users/runner/work/opencv-rust/opencv-rust/target/debug/build/opencv-80956898113978e8/out",
        "-I",
        ".",
        "-I",
        "/usr/local/opt/opencv/include/opencv4",
        "-Wall",
        "-Wextra",
        "-std=c++14",
    ],
    env: [],
    family: Clang,
    cuda: false,
    removed_args: [],
    has_internal_target_arg: false,
}

The compiler is created as follows in opencv code: https://github.com/twistedfall/opencv-rust/blob/730cc64955ab4ad5286bee891e795a1322b053c0/build.rs#L223-L276