8000 Your compiler (cc) is not supported due to a memcmp related bug · Issue #1686 · cross-rs/cross · GitHub
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Your compiler (cc) is not supported due to a memcmp related bug #1686
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Your compiler (cc) is not supported due to a memcmp related bug#1686
@rnikander

Description

@rnikander
rnikander
opened on Jun 1, 2025

Checklist

Describe your issue

I'm trying to cross compile a web server component for my linux server, from my macOS laptop. I installed cross using:

cargo install --git https://github.com/cross-rs/cross cross

(After cargo install cross led to other failures.)

I have installed Docker desktop.

I then tried to build my Rust project:

 cross build --release --target x86_64-unknown-linux-gnu -p my-web-site

It eventually choked on the aws-lc-sys crate with messages:

error: failed to run custom build command for `aws-lc-sys v0.29.0`
Caused by:
  process didn't exit successfully: `/target/release/build/aws-lc-sys-f874517cc0c9f12f/build-script-main` (exit status: 101)
  --- stdout
  cargo:rerun-if-env-changed=AWS_LC_SYS_NO_PREFIX_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_NO_PREFIX
  cargo:rerun-if-env-changed=AWS_LC_SYS_PREGENERATING_BINDINGS_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_PREGENERATING_BINDINGS
  cargo:rerun-if-env-changed=AWS_LC_SYS_EXTERNAL_BINDGEN_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_EXTERNAL_BINDGEN
  cargo:rerun-if-env-changed=AWS_LC_SYS_NO_ASM_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_NO_ASM
  cargo:rerun-if-env-changed=AWS_LC_SYS_CFLAGS_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_CFLAGS
  cargo:rerun-if-env-changed=CFLAGS_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=CFLAGS
  cargo:rerun-if-env-changed=AWS_LC_SYS_PREBUILT_NASM_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_PREBUILT_NASM
  cargo:rerun-if-env-changed=AWS_LC_SYS_C_STD_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_C_STD
  cargo:rerun-if-env-changed=AWS_LC_SYS_CMAKE_BUILDER_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_CMAKE_BUILDER
  cargo:rerun-if-env-changed=AWS_LC_SYS_NO_PREGENERATED_SRC_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_NO_PREGENERATED_SRC
  cargo:rerun-if-env-changed=AWS_LC_SYS_EFFECTIVE_TARGET_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_EFFECTIVE_TARGET
  cargo:rustc-cfg=x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_STATIC_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_STATIC
  default_for Target: 'x86_64-unknown-linux-gnu'
  cargo:rerun-if-env-changed=CARGO_FEATURE_SSL
  cargo:warning=Building with: CC
  cargo:warning=Symbol Prefix: Some("aws_lc_0_29_0")
  default_for Target: 'x86_64-unknown-linux-gnu'
  cargo:rerun-if-env-changed=CARGO_FEATURE_SSL
  cargo:root=/target/x86_64-unknown-linux-gnu/release/build/aws-lc-sys-3b2959fcff29172e/out
  default_for Target: 'x86_64-unknown-linux-gnu'
  OPT_LEVEL = Some(3)
  OUT_DIR = Some(/target/x86_64-unknown-linux-gnu/release/build/aws-lc-sys-3b2959fcff29172e/out)
  TARGET = Some(x86_64-unknown-linux-gnu)
  HOST = Some(x86_64-unknown-linux-gnu)
  cargo:rerun-if-env-changed=CC_x86_64-unknown-linux-gnu
  CC_x86_64-unknown-linux-gnu = None
  cargo:rerun-if-env-changed=CC_x86_64_unknown_linux_gnu
  CC_x86_64_unknown_linux_gnu = None
  cargo:rerun-if-env-changed=HOST_CC
  HOST_CC = None
  cargo:rerun-if-env-changed=CC
  CC = None
  cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT
  RUSTC_WRAPPER = None
  cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS
  CRATE_CC_NO_DEFAULTS = None
  DEBUG = Some(false)
  CARGO_CFG_TARGET_FEATURE = Some(fxsr,sse,sse2)
  cargo:rerun-if-env-changed=CFLAGS
  CFLAGS = None
  cargo:rerun-if-env-changed=HOST_CFLAGS
  HOST_CFLAGS = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64_unknown_linux_gnu
  CFLAGS_x86_64_unknown_linux_gnu = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64-unknown-linux-gnu
  CFLAGS_x86_64-unknown-linux-gnu = None
  CARGO_ENCODED_RUSTFLAGS = Some()
  OPT_LEVEL = Some(3)
  TARGET = Some(x86_64-unknown-linux-gnu)
  HOST = Some(x86_64-unknown-linux-gnu)
  cargo:rerun-if-env-changed=CC_x86_64-unknown-linux-gnu
  CC_x86_64-unknown-linux-gnu = None
  cargo:rerun-if-env-changed=CC_x86_64_unknown_linux_gnu
  CC_x86_64_unknown_linux_gnu = None
  cargo:rerun-if-env-changed=HOST_CC
  HOST_CC = None
  cargo:rerun-if-env-changed=CC
  CC = None
  cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT
  RUSTC_WRAPPER = None
  cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS
  CRATE_CC_NO_DEFAULTS = None
  DEBUG = Some(false)
  CARGO_CFG_TARGET_FEATURE = Some(fxsr,sse,sse2)
  cargo:rerun-if-env-changed=CFLAGS
  CFLAGS = None
  cargo:rerun-if-env-changed=HOST_CFLAGS
  HOST_CFLAGS = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64_unknown_linux_gnu
  CFLAGS_x86_64_unknown_linux_gnu = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64-unknown-linux-gnu
  CFLAGS_x86_64-unknown-linux-gnu = None
  CARGO_ENCODED_RUSTFLAGS = Some()
  cargo:warning=Compilation of 'c11.c' succeeded - Ok(["/target/x86_64-unknown-linux-gnu/release/build/aws-lc-sys-3b2959fcff29172e/out/out-c11/7dfda64fdf5a526c-c11.o"]).
  cargo:rerun-if-env-changed=AWS_LC_SYS_CC_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_CC
  cargo:rerun-if-env-changed=CC_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=CC
  cargo:rerun-if-env-changed=AWS_LC_SYS_CXX_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=AWS_LC_SYS_CXX
  cargo:rerun-if-env-changed=CXX_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=CXX
  OUT_DIR = Some(/target/x86_64-unknown-linux-gnu/release/build/aws-lc-sys-3b2959fcff29172e/out)
  cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT
  cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS
  CRATE_CC_NO_DEFAULTS = None
  TARGET = Some(x86_64-unknown-linux-gnu)
  CARGO_CFG_TARGET_FEATURE = Some(fxsr,sse,sse2)
  HOST = Some(x86_64-unknown-linux-gnu)
  cargo:rerun-if-env-changed=CFLAGS
  CFLAGS = None
  cargo:rerun-if-env-changed=HOST_CFLAGS
  HOST_CFLAGS = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64_unknown_linux_gnu
  CFLAGS_x86_64_unknown_linux_gnu = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64-unknown-linux-gnu
  CFLAGS_x86_64-unknown-linux-gnu = None
  cargo:warning=Using flag: -ffile-prefix-map=/Users/rob/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/aws-lc-sys-0.29.0=
  OPT_LEVEL = Some(3)
  TARGET = Some(x86_64-unknown-linux-gnu)
  HOST = Some(x86_64-unknown-linux-gnu)
  cargo:rerun-if-env-changed=CC_x86_64-unknown-linux-gnu
  CC_x86_64-unknown-linux-gnu = None
 
6A26
 cargo:rerun-if-env-changed=CC_x86_64_unknown_linux_gnu
  CC_x86_64_unknown_linux_gnu = None
  cargo:rerun-if-env-changed=HOST_CC
  HOST_CC = None
  cargo:rerun-if-env-changed=CC
  CC = None
  cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT
  RUSTC_WRAPPER = None
  cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS
  CRATE_CC_NO_DEFAULTS = None
  DEBUG = Some(false)
  CARGO_CFG_TARGET_FEATURE = Some(fxsr,sse,sse2)
  cargo:rerun-if-env-changed=CFLAGS
  CFLAGS = None
  cargo:rerun-if-env-changed=HOST_CFLAGS
  HOST_CFLAGS = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64_unknown_linux_gnu
  CFLAGS_x86_64_unknown_linux_gnu = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64-unknown-linux-gnu
  CFLAGS_x86_64-unknown-linux-gnu = None
  CARGO_ENCODED_RUSTFLAGS = Some()
  cargo:warning=Compilation of 'stdalign_check.c' succeeded - Ok(["/target/x86_64-unknown-linux-gnu/release/build/aws-lc-sys-3b2959fcff29172e/out/out-stdalign_check/7dfda64fdf5a526c-stdalign_check.o"]).
  OPT_LEVEL = Some(3)
  TARGET = Some(x86_64-unknown-linux-gnu)
  HOST = Some(x86_64-unknown-linux-gnu)
  cargo:rerun-if-env-changed=CC_x86_64-unknown-linux-gnu
  CC_x86_64-unknown-linux-gnu = None
  cargo:rerun-if-env-changed=CC_x86_64_unknown_linux_gnu
  CC_x86_64_unknown_linux_gnu = None
  cargo:rerun-if-env-changed=HOST_CC
  HOST_CC = None
  cargo:rerun-if-env-changed=CC
  CC = None
  cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT
  RUSTC_WRAPPER = None
  cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS
  CRATE_CC_NO_DEFAULTS = None
  DEBUG = Some(false)
  CARGO_CFG_TARGET_FEATURE = Some(fxsr,sse,sse2)
  cargo:rerun-if-env-changed=CFLAGS
  CFLAGS = None
  cargo:rerun-if-env-changed=HOST_CFLAGS
  HOST_CFLAGS = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64_unknown_linux_gnu
  CFLAGS_x86_64_unknown_linux_gnu = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64-unknown-linux-gnu
  CFLAGS_x86_64-unknown-linux-gnu = None
  CARGO_ENCODED_RUSTFLAGS = Some()
  cargo:warning=Compilation of 'builtin_swap_check.c' succeeded - Ok(["/target/x86_64-unknown-linux-gnu/release/build/aws-lc-sys-3b2959fcff29172e/out/out-builtin_swap_check/7dfda64fdf5a526c-builtin_swap_check.o"]).
  OPT_LEVEL = Some(3)
  OUT_DIR = Some(/target/x86_64-unknown-linux-gnu/release/build/aws-lc-sys-3b2959fcff29172e/out)
  TARGET = Some(x86_64-unknown-linux-gnu)
  HOST = Some(x86_64-unknown-linux-gnu)
  cargo:rerun-if-env-changed=CC_x86_64-unknown-linux-gnu
  CC_x86_64-unknown-linux-gnu = None
  cargo:rerun-if-env-changed=CC_x86_64_unknown_linux_gnu
  CC_x86_64_unknown_linux_gnu = None
  cargo:rerun-if-env-changed=HOST_CC
  HOST_CC = None
  cargo:rerun-if-env-changed=CC
  CC = None
  cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT
  RUSTC_WRAPPER = None
  cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS
  CRATE_CC_NO_DEFAULTS = None
  DEBUG = Some(false)
  CARGO_CFG_TARGET_FEATURE = Some(fxsr,sse,sse2)
  cargo:rerun-if-env-changed=CFLAGS
  CFLAGS = None
  cargo:rerun-if-env-changed=HOST_CFLAGS
  HOST_CFLAGS = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64_unknown_linux_gnu
  CFLAGS_x86_64_unknown_linux_gnu = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64-unknown-linux-gnu
  CFLAGS_x86_64-unknown-linux-gnu = None
  CARGO_ENCODED_RUSTFLAGS = Some()

  --- stderr

  thread 'main' panicked at /Users/rob/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/aws-lc-sys-0.29.0/builder/cc_builder.rs:490:13:
  ### COMPILER BUG DETECTED ###
  Your compiler (cc) is not supported due to a memcmp related bug reported in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95189. We strongly recommend against using this compiler. 
  EXECUTED: true
  ERROR: 
  OUTPUT: 

  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...

What target(s) are you cross-compiling for?

x86_64-unknown-linux-gnu

Which operating system is the host (e.g computer cross is on) running?

  • macOS
  • Windows
  • Linux / BSD
  • other OS (specify in description)

What architecture is the host?

  • x86_64 / AMD64
  • arm32
  • arm64 (including Mac M1)

What container engine is cross using?

  • docker
  • podman
  • other container engine (specify in description)

cross version

cross 0.2.5 (51f46f2 2025-05-24)

Example

No response

Additional information / notes

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