v0.7.0 no longer builds on target x86_64-unknown-linux-musl

[martinstuder]

Version 0.7.0 of jemallocator no longer builds on target x86_64-unknown-linux-musl while version 0.6.1 works just fine.

warning: tikv-jemalloc-sys@0.7.1+5.3.1-0-g81034ce1f1373e37dc865038e1bc8eeecf559ce8: "`background_threads_runtime_support` not supported for `x86_64-unknown-linux-musl`"
error: failed to run custom build command for `tikv-jemalloc-sys v0.7.1+5.3.1-0-g81034ce1f1373e37dc865038e1bc8eeecf559ce8`

Caused by:
  process didn't exit successfully: `/home/xyz/scratch/target/debug/build/tikv-jemalloc-sys-7919d1c5f128d638/build-script-build` (exit status: 101)
  --- stdout
  TARGET=x86_64-unknown-linux-musl
  HOST=x86_64-unknown-linux-gnu
  NUM_JOBS=24
  OUT_DIR="/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out"
  BUILD_DIR="/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out/build"
  SRC_DIR="/home/xyz/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tikv-jemalloc-sys-0.7.1+5.3.1-0-g81034ce1f1373e37dc865038e1bc8eeecf559ce8"
  cargo:rustc-cfg=prefixed
  cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_MUSL_JEMALLOC_OVERRIDE
  cargo:rerun-if-env-changed=JEMALLOC_OVERRIDE
  cargo:rerun-if-env-changed=CC_x86_64-unknown-linux-musl
  CC_x86_64-unknown-linux-musl = None
  cargo:rerun-if-env-changed=CC_x86_64_unknown_linux_musl
  CC_x86_64_unknown_linux_musl = None
  cargo:rerun-if-env-changed=TARGET_CC
  TARGET_CC = None
  cargo:rerun-if-env-changed=CC
  CC = None
  cargo:rerun-if-env-changed=CROSS_COMPILE
  CROSS_COMPILE = None
  PATH = Some(/home/xyz/.cargo/bin:/home/xyz/.pixi/bin:/home/xyz/.cargo/bin:/home/xyz/.local/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/var/lib/flatpak/exports/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/opt/rocm/bin:/var/lib/snapd/snap/bin:/home/xyz/.local/share/JetBrains/Toolbox/scripts)
  cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT
  cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS
  CRATE_CC_NO_DEFAULTS = None
  cargo:rerun-if-env-changed=CFLAGS
  CFLAGS = None
  cargo:rerun-if-env-changed=TARGET_CFLAGS
  TARGET_CFLAGS = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64_unknown_linux_musl
  CFLAGS_x86_64_unknown_linux_musl = None
  cargo:rerun-if-env-changed=CFLAGS_x86_64-unknown-linux-musl
  CFLAGS_x86_64-unknown-linux-musl = None
  cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_MUSL_LDFLAGS
  cargo:rerun-if-env-changed=LDFLAGS
  cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_MUSL_CPPFLAGS
  cargo:rerun-if-env-changed=CPPFLAGS
  CC="x86_64-linux-musl-gcc"
  CFLAGS="-O0 -ffunction-sections -fdata-sections -fPIC -g -gdwarf-4 -fno-omit-frame-pointer -m64 -Wall"
  LDFLAGS=""
  CPPFLAGS=""
  JEMALLOC_REPO_DIR="jemalloc"
  cargo:warning="`background_threads_runtime_support` not supported for `x86_64-unknown-linux-musl`"
  cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_MUSL_JEMALLOC_SYS_WITH_MALLOC_CONF
  cargo:rerun-if-env-changed=JEMALLOC_SYS_WITH_MALLOC_CONF
  cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_MUSL_JEMALLOC_SYS_WITH_LG_PAGE
  cargo:rerun-if-env-changed=JEMALLOC_SYS_WITH_LG_PAGE
  cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_MUSL_JEMALLOC_SYS_WITH_LG_HUGEPAGE
  cargo:rerun-if-env-changed=JEMALLOC_SYS_WITH_LG_HUGEPAGE
  cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_MUSL_JEMALLOC_SYS_WITH_LG_QUANTUM
  cargo:rerun-if-env-changed=JEMALLOC_SYS_WITH_LG_QUANTUM
  cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_MUSL_JEMALLOC_SYS_WITH_LG_VADDR
  cargo:rerun-if-env-changed=JEMALLOC_SYS_WITH_LG_VADDR
  --with-jemalloc-prefix=_rjem_
  CARGO_FEATURE_STATS set
  running: cd "/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out/build" && CC="x86_64-linux-musl-gcc" CFLAGS="-O0 -ffunction-sections -fdata-sections -fPIC -g -gdwarf-4 -fno-omit-frame-pointer -m64 -Wall" CPPFLAGS="" LDFLAGS="" "sh" "/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out/build/configure" "--with-version=5.3.1-0-g81034ce1f1373e37dc865038e1bc8eeecf559ce8" "--disable-cxx" "--enable-doc=no" "--enable-shared=no" "--with-jemalloc-prefix=_rjem_" "--with-private-namespace=_rjem_" "--enable-stats" "--host=x86_64-unknown-linux-musl" "--build=x86_64-unknown-linux-gnu" "--prefix=/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out"
  checking for xsltproc... /usr/bin/xsltproc
  checking for x86_64-unknown-linux-musl-gcc... x86_64-linux-musl-gcc
  checking whether the C compiler works... no
  running: "tail" "-n" "100" "/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out/build/config.log"
  abi=''
  abs_objroot='/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out/build/'
  abs_srcroot='/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out/build/'
  ac_ct_CC=''
  ac_ct_CXX=''
  bindir='${exec_prefix}/bin'
  build='x86_64-unknown-linux-gnu'
  build_alias='x86_64-unknown-linux-gnu'
  build_cpu=''
  build_os=''
  build_vendor=''
  cfghdrs_in=''
  cfghdrs_out=''
  cfgoutputs_in=''
  cfgoutputs_out=''
  datadir='${datarootdir}'
  datarootdir='${prefix}/share'
  docdir='${datarootdir}/doc/${PACKAGE}'
  dvidir='${docdir}'
  enable_autogen=''
  enable_cache_oblivious=''
  enable_cxx='no'
  enable_debug=''
  enable_doc='no'
  enable_experimental_sdt=''
  enable_experimental_smallocx=''
  enable_fill=''
  enable_initial_exec_tls=''
  enable_lazy_lock=''
  enable_log=''
  enable_opt_safety_checks=''
  enable_opt_size_checks=''
  enable_prof=''
  enable_readlinkat=''
  enable_shared='no'
  enable_static=''
  enable_stats='yes'
  enable_tls=''
  enable_uaf_detection=''
  enable_utrace=''
  enable_xmalloc=''
  enable_zone_allocator=''
  exe=''
  exec_prefix='/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out'
  force_getenv=''
  host='x86_64-unknown-linux-musl'
  host_alias='x86_64-unknown-linux-musl'
  host_cpu=''
  host_os=''
  host_vendor=''
  htmldir='${docdir}'
  importlib=''
  includedir='${prefix}/include'
  infodir='${datarootdir}/info'
  install_suffix=''
  je_=''
  jemalloc_version=''
  jemalloc_version_bugfix=''
  jemalloc_version_gid=''
  jemalloc_version_major=''
  jemalloc_version_minor=''
  jemalloc_version_nrev=''
  libdir='${exec_prefix}/lib'
  libdl=''
  libexecdir='${exec_prefix}/libexec'
  libprefix=''
  link_whole_archive=''
  localedir='${datarootdir}/locale'
  localstatedir='${prefix}/var'
  mandir='${datarootdir}/man'
  o=''
  objroot=''
  oldincludedir='/usr/include'
  pdfdir='${docdir}'
  prefix='/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out'
  private_namespace=''
  program_transform_name='s,x,x,'
  psdir='${docdir}'
  rev='2'
  runstatedir='${localstatedir}/run'
  sbindir='${exec_prefix}/sbin'
  sharedstatedir='${prefix}/com'
  so=''
  srcroot=''
  sysconfdir='${prefix}/etc'
  target_alias=''

  ## ----------- ##
  ## confdefs.h. ##
  ## ----------- ##

  /* confdefs.h */
  #define PACKAGE_NAME ""
  #define PACKAGE_TARNAME ""
  #define PACKAGE_VERSION ""
  #define PACKAGE_STRING ""
  #define PACKAGE_BUGREPORT ""
  #define PACKAGE_URL ""

  configure: exit 77

  --- stderr
  configure: error: in `/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out/build':
  configure: error: C compiler cannot create executables
  See `config.log' for more details

  thread 'main' (28063) panicked at /home/xyz/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tikv-jemalloc-sys-0.7.1+5.3.1-0-g81034ce1f1373e37dc865038e1bc8eeecf559ce8/build.rs:441:9:
  command did not execute successfully: cd "/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out/build" && CC="x86_64-linux-musl-gcc" CFLAGS="-O0 -ffunction-sections -fdata-sections -fPIC -g -gdwarf-4 -fno-omit-frame-pointer -m64 -Wall" CPPFLAGS="" LDFLAGS="" "sh" "/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out/build/configure" "--with-version=5.3.1-0-g81034ce1f1373e37dc865038e1bc8eeecf559ce8" "--disable-cxx" "--enable-doc=no" "--enable-shared=no" "--with-jemalloc-prefix=_rjem_" "--with-private-namespace=_rjem_" "--enable-stats" "--host=x86_64-unknown-linux-musl" "--build=x86_64-unknown-linux-gnu" "--prefix=/home/xyz/scratch/target/x86_64-unknown-linux-musl/debug/build/tikv-jemalloc-sys-b22b58680e27ccb8/out"
  expected success, got: exit status: 77
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...

The relevant lines from config.log are:

configure:3868: x86_64-linux-musl-gcc --version >&5
gcc (GCC) 16.1.1 20260430
Copyright (C) 2026 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

configure:3879: $? = 0
configure:3868: x86_64-linux-musl-gcc -v >&5
Using built-in specs.
Reading specs from /usr/lib/musl/lib/musl-gcc.specs
rename spec cpp_options to old_cpp_options
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/16.1.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --enable-languages=ada,c,c++,d,fortran,go,lto,m2,objc,obj-c++,rust,cobol --enable-bootstrap --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://gitlab.archlinux.org/archlinux/packaging/packages/gcc/-/issues --with-build-config=bootstrap-lto --with-linker-hash-style=gnu --with-system-zlib --enable-cet=auto --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-default-ssp --enable-gnu-indirect-function --enable-gnu-unique-object --enable-libstdcxx-backtrace --enable-link-serialization=1 --enable-linker-build-id --enable-lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --disable-libssp --disable-libstdcxx-pch --disable-werror --disable-fixincludes
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.1.1 20260430 (GCC) 
... rest of stderr output deleted ...
configure:3879: $? = 0
configure:3868: x86_64-linux-musl-gcc -V >&5
gcc: error: unrecognized command-line option '-V'
gcc: fatal error: no input files
compilation terminated.
configure:3879: $? = 1
configure:3868: x86_64-linux-musl-gcc -qversion >&5
gcc: error: unrecognized command-line option '-qversion'; did you mean '--version'?
gcc: fatal error: no input files
compilation terminated.
configure:3879: $? = 1
configure:3868: x86_64-linux-musl-gcc -version >&5
gcc: error: unrecognized command-line option '-version'
gcc: fatal error: no input files
compilation terminated.
configure:3879: $? = 1
configure:3899: checking whether the C compiler works
configure:3921: x86_64-linux-musl-gcc -O0 -ffunction-sections -fdata-sections -fPIC -g -gdwarf-4 -fno-omit-frame-pointer -m64 -Wall   conftest.c  >&5
/usr/bin/ld: cannot find -latomic_asneeded: No such file or directory
collect2: error: ld returned 1 exit status
configure:3925: $? = 1
configure:3965: result: no

[ti-chi-bot]

Welcome @martinstuder! It looks like this is your first issue to tikv/jemallocator 🎉

[martinstuder]

sudo ar rcs /usr/lib/musl/lib/libatomic_asneeded.a did the trick for me