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Fail to cross build for RISC-V #66803

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Fail to cross build for RISC-V#66803
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buildIssues and PRs related to Node.js builds or CI infrastructure.riscv64Issues and PRs related to the 64-bit RISC-V architecture.

Description

@scratch-er
scratch-er
opened on Oct 16, 2026

Platform

  • Nodejs version: current main branch (f59539b514344ed0a0945f8790d61121df88a5d4)
  • Host: Linux x86_64
  • Target: RISC-V 64 bit Linux with rv64gc instruction set.
  • Host compiler: clang 22
  • Cross compiler: GCC 15
$ clang --version
clang version 22.1.8
Target: x86_64-aosc-linux-gnu
Thread model: posix
InstalledDir: /usr/lib/llvm-22/bin
$ riscv64-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=riscv64-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/opt/abcross/riscv64/libexec/gcc/riscv64-aosc-linux-gnu/15.3.0/lto-wrapper
Target: riscv64-aosc-linux-gnu
Configured with: /var/cache/acbs/build/acbs.r7e6hypg/gcc-15.3.0/configure --prefix=/opt/abcross/riscv64 --target=riscv64-aosc-linux-gnu --with-sysroot=/var/ab/cross-root/riscv64 --enable-shared --disable-multilib --enable-c99 --enable-long-long --enable-threads=posix --enable-languages=c,c++,fortran,lto,go,objc,obj-c++,m2,d,ada --enable-__cxa_atexit --disable-altivec --disable-fixed-point --enable-lto --enable-gnu-unique-object --enable-linker-build-id --enable-libstdcxx-dual-abi --with-default-libstdcxx-abi=new --with-arch=rv64gc --with-abi=lp64d --with-isa-spec=2.2
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.3.0 (GCC)

Error

There will be many errors related with failed static assertions and no matching templates, see the attached log for details.

Detailed steps of reproduction

# first configure for cross building
./configure --dest-cpu=riscv64 --dest-os=linux --prefix=/usr --cross-compiling
# then attempt to build
make CC="ccache riscv64-linux-gnu-gcc" CXX="ccache riscv64-linux-gnu-g++" CC_host="ccache clang" CXX_host="ccache clang++" DESTDIR=$PWD/target install -j20
# the above command will fail, and log was collected with the following command
make CC="ccache riscv64-linux-gnu-gcc" CXX="ccache riscv64-linux-gnu-g++" CC_host="ccache clang" CXX_host="ccache clang++" DESTDIR=$PWD/target install -j20 -k 2>&1 | tee build.log

Log file

build.log

Activity

  1. scratch-er commented on Oct 16, 2026

    @scratch-er
    scratch-er
    on Oct 16, 2026
    Author

    Also, I find that --ninja in configure will not work with cross compiling to RISC-V, but works for native compiling for x86_64 and cross compiling to arm64.

    $ ./configure --dest-cpu=riscv64 --dest-os=linux --prefix=/usr --cross-compiling --ninja
Node.js configure: Found Python 3.14.8...
INFO: Using floating patch "tools/icu/patches/78/source/i18n/dtfmtsym.cpp" from "tools/icu"
INFO: configure completed successfully
$ make CC="ccache riscv64-linux-gnu-gcc" CXX="ccache riscv64-linux-gnu-g++" CC_host="ccache clang" CXX_host="ccache clang++" DESTDIR=$PWD/target install -j20 -k 2>&1 | tee build.log
ninja -C out/Release -j20
ninja: Entering directory `out/Release'
ninja: error: obj.host/tools/v8_gypfiles/v8_inspector_headers.ninja:14: multiple rules generate gen/inspector-generated-output-root/src/js_protocol.stamp

make: *** [Makefile:161: node] Error 1
make: Target 'install' not remade because of errors.

  2. bindu-yogesh commented on Oct 17, 2026

    @bindu-yogesh
    bindu-yogesh
    on Oct 17, 2026

    Hi @scratch-er, I'd like to work on this issue.

    I'm interested in investigating the RISC-V cross-compilation failures and the Ninja build error. I'd like to look into the root cause, reproduce the issue, and work on a fix.

    Could you please assign this issue to me? I'll share my findings and submit a PR once I have a solution. Thanks!

  3. scratch-er commented on Oct 17, 2026

    @scratch-er
    scratch-er
    on Oct 17, 2026
    Author

    3. Hi @scratch-er, I'd like to work on this issue.
    I'm interested in investigating the RISC-V cross-compilation failures and the Ninja build error. I'd like to look into the root cause, reproduce the issue, and work on a fix.
    Could you please assign this issue to me? I'll share my findings and submit a PR once I have a solution. Thanks!

    Hi, @bindu-yogesh , neither you or me are member of this repo so I cannot assign you. Please just refer to https://github.com/nodejs/node/blob/main/CONTRIBUTING.md .

  4. inoway46
    added
    buildIssues and PRs related to Node.js builds or CI infrastructure.
    riscv64Issues and PRs related to the 64-bit RISC-V architecture.
    on Oct 18, 2026

  5. inoway46 commented on Oct 18, 2026

    @inoway46
    inoway46
    on Oct 18, 2026
    Contributor

    The cross-build issues are being addressed separately:

    I plan to run a full cross-build with both PRs and the candidate V8 /64 change applied.

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