enabling "time" feature under -Ctarget-feature=+crt-static and -Zbuild-std=std,panic_abort causes a linker error

[littzhch]

Version
tokio v1.24.1
rustc 1.68.0-nightly (0b90256ad 2023-01-13)

Platform
Linux 6.1.4-arch1-1 #1 SMP PREEMPT_DYNAMIC Sat, 07 Jan 2023 15:10:07 +0000 x86_64 GNU/Linux

Description
enabling "time" feature under -Ctarget-feature=+crt-static and -Zbuild-std=std,panic_abort causes a linker error. It seems that there are conflict symbols between libgcc.a and libcompiler_builtins.rlib.

I tried this code:

# Cargo.toml
[dependencies]
tokio = {version = "1", features = ["rt", "time"]}

// main.rs
fn main() {
    let _ = tokio::runtime::Builder::new_current_thread().build();
}

build command:

RUSTFLAGS="-Ctarget-feature=+crt-static" cargo +nightly build -Z build-std=std,panic_abort --target x86_64-unknown-linux-gnu

I expected to see this happen: successfully compiled
Instead, this happened:

error: linking with `cc` failed: exit status: 1
  |
  = note: LC_ALL="C" PATH="/home/littzhch/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/home/littzhch/.local/bin:/home/littzhch/.cargo/bin" VSLANG="1033" "cc" "-m64" "/tmp/rustctGj6UT/symbols.o" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/rtest-bd3374c760284bbe.1tr20zrqvjebqake.rcgu.o" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/rtest-bd3374c760284bbe.45tnj5lua2phsytt.rcgu.o" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/rtest-bd3374c760284bbe.4cpvu8nv56qqistx.rcgu.o" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/rtest-bd3374c760284bbe.5g2s7jcu83zw8ymk.rcgu.o" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/rtest-bd3374c760284bbe.5umyh4jlsmtl621.rcgu.o" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/rtest-bd3374c760284bbe.vqm1kclou91r0zy.rcgu.o" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/rtest-bd3374c760284bbe.42t89alsc76u1n3u.rcgu.o" "-Wl,--as-needed" "-L" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps" "-L" "/home/littzhch/Documents/code/CLionProjects/rtest/target/debug/deps" "-L" "/home/littzhch/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libtokio-1ffd24c4c408a3bb.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libpin_project_lite-6a5e4cbd6e8abf29.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libstd-8a33c92b99e4130e.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libpanic_unwind-766d1fc1fbc06b5f.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libobject-d4101cdc877ba69d.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libmemchr-9cd65cbae8c183b6.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libaddr2line-eac2fc6a6d56c6c8.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libgimli-59c0ff6b4a7a390d.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/librustc_demangle-4a186183a14df028.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libstd_detect-59cb4ddef704fd10.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libhashbrown-90f9596124847c34.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libminiz_oxide-7291f4f58c1e436b.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libadler-9bd49e147e9550b0.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/librustc_std_workspace_alloc-83ae7ef5a5d3a9a6.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libunwind-d73dc230b5fe36a0.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libcfg_if-5293756c4695c9d1.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/liblibc-19794c4b50d5a0a1.rlib" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-lgcc_eh" "-lgcc" "-lc" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/liballoc-3a03e904b8b6318c.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/librustc_std_workspace_core-e70dffcab5345a99.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libcore-ccc1e2b7bfcb0eff.rlib" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libcompiler_builtins-1fba6df7def69afa.rlib" "-Wl,-Bdynamic" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/home/littzhch/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/rtest-bd3374c760284bbe" "-Wl,--gc-sections" "-static-pie" "-Wl,-zrelro,-znow" "-nodefaultlibs"
  = note: /usr/bin/ld: /home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libstd-8a33c92b99e4130e.rlib(std-8a33c92b99e4130e.std.9d21884c-cgu.6.rcgu.o): in function `std::sys::unix::os::home_dir::fallback':
          /home/littzhch/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/sys/unix/os.rs:626: warning: Using 'getpwuid_r' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
          /usr/bin/ld: /home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libstd-8a33c92b99e4130e.rlib(std-8a33c92b99e4130e.std.9d21884c-cgu.15.rcgu.o): in function `<std::sys_common::net::LookupHost as core::convert::TryFrom<(&str,u16)>>::try_from::{{closure}}':
          /home/littzhch/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/sys_common/net.rs:206: warning: Using 'getaddrinfo' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
          /usr/bin/ld: /home/littzhch/Documents/code/CLionProjects/rtest/target/x86_64-unknown-linux-gnu/debug/deps/libcompiler_builtins-1fba6df7def69afa.rlib(compiler_builtins-1fba6df7def69afa.compiler_builtins.372063ae-cgu.9.rcgu.o): in function `__umodti3':
          /home/littzhch/.cargo/registry/src/mirrors.ustc.edu.cn-61ef6e0cd06fb9b8/compiler_builtins-0.1.85/src/macros.rs:394: multiple definition of `__umodti3'; /usr/lib/gcc/x86_64-pc-linux-gnu/12.2.0/libgcc.a(_umoddi3.o):(.text+0x0): first defined here
          collect2: error: ld returned 1 exit status
          

error: could not compile `rtest` due to previous error

[taiki-e]

glibc does not support static linking well enough and It is known that even simple examples using only the standard library do not work well (e.g., rust-lang/rust#100711). if you want to use static linking in linux, it is recommended to use musl.

I will close this because I don't think this is a tokio problem.