Unable to Build riscv-gnu-toolchain: libunwind Dependency Error

[404allen404]

Hello,
I encountered an error while building the riscv-gnu-toochain using the following configuration:
./configure --prefix=$RISCV --enable-llvm --enable-linux --with-arch=rv64ima_zicsr --with-abi=lp64

The error message is as follows:
CMake Error at /home/yiteng/riscv-gnu-toolchain/llvm/libunwind/src/CMakeLists.txt:102 (message): Compiler doesn't support generation of unwind tables if exception support is disabled. Building libunwind DSO with runtime dependency on C++ ABI library is not supported.

It seems to be related to the dependency on the C++ ABI library for building libunwind. I am unsure how to resolve this issue.
Could you provide guidance on how to fix this error or suggest the correct configuration flags to avoid it?
Thank you in advance for your assistance!

[TommyMurphyTM1234]

Please capture and attach your build log - e.g.:

./configure --prefix=$RISCV --enable-llvm --enable-linux --with-arch=rv64ima_zicsr --with-abi=lp64
make 2>&1 | tee build.log

[TommyMurphyTM1234]

Could this be relevant?

• https://gitlab.kitware.com/cmake/cmake/-/issues/24561

[404allen404]

@TommyMurphyTM1234
This is my build.log
build.log

I have already visited this website:
https://gitlab.kitware.com/cmake/cmake/-/issues/24561
and tried changing the GCC and G++ versions to 11,
as well as using CMake 3.24.3.
The issue still persists.

[TommyMurphyTM1234]

Both of these look quite old:

and tried changing the GCC and G++ versions to 11,
as well as using CMake 3.24.3.

My LLVM build is still in progress (it's very slow on the hardware that I have) but I don't think that it's suffering from the same problem. In the build log I see this:

-- Performing Test HAVE_CXX_FLAG_FNO_EXCEPTIONS
-- Performing Test HAVE_CXX_FLAG_FNO_EXCEPTIONS - Success

so I presume that I have got past the step where yours fails?

For what it's worth I'm using the following:

cat /etc/*-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=24.04
DISTRIB_CODENAME=noble
DISTRIB_DESCRIPTION="Ubuntu 24.04.1 LTS"
PRETTY_NAME="Ubuntu 24.04.1 LTS"
NAME="Ubuntu"
VERSION_ID="24.04"
VERSION="24.04.1 LTS (Noble Numbat)"
VERSION_CODENAME=noble
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=noble
LOGO=ubuntu-logo

gcc --version
gcc (Ubuntu 13.2.0-23ubuntu4) 13.2.0
Copyright (C) 2023 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.

cmake --version
cmake version 3.28.3

CMake suite maintained and supported by Kitware (kitware.com/cmake).

Maybe your build platform and/or tools are simply too out of date?

Note that the CI builds take place on Ubuntu 22,04 and 24.04

• riscv-gnu-toolchain/.github/workflows/nightly-release.yaml

  Line 51 in 20f6153

  os: [ubuntu-22.04, ubuntu-24.04]

[404allen404]

@TommyMurphyTM1234
I will try it again, my OS is also Ubuntu 24.04, and gcc version is 13.2

[TommyMurphyTM1234]

I don't understand:

my OS is also Ubuntu 24.04, and gcc version is 13.2

The build log that you previously uploaded has this:

-- The C compiler identification is GNU 11.4.0
-- The CXX compiler identification is GNU 11.4.0

[404allen404]

@TommyMurphyTM1234
My initial attempt was exactly the same as yours, but after checking the website https://gitlab.kitware.com/cmake/cmake/-/issues/24561, I decided to downgrade the version.
But it is not working

[404allen404]

@TommyMurphyTM1234
I used the same version as you, but it still didn't work.

[TommyMurphyTM1234]

Screeshots are really not ideal for this sort of issue - difficult to read for some and impossible to search/process.
Please post the full build log for the build using GCC 13.2.0.

[404allen404]

Sorry, this is new log using GCC 13.2.0
build.log

[TommyMurphyTM1234]

Sorry, this is new log using GCC 13.2.0 build.log

That doesn't seem to be a full build log?
You need to capture a full build log for a clean build:

make distclean 
rm -rf $RISCV
make 2>&1 | tee build.log

[404allen404]

@TommyMurphyTM1234
OK, wait a moment

[404allen404]

@TommyMurphyTM1234
This is full log
build.log

[TommyMurphyTM1234]

My build finally completed and did so successfully.

git clone https://github.com/riscv-collab/riscv-gnu-toolchain issue-1623
cd issue-1623
./configure --prefix=`pwd`/installed-tools --enable-llvm --with-arch=rv64ima_zicsr --with-abi=lp64
make 2>&1 | tee build.log

ls installed-tools/bin
amdgpu-arch            clang-offload-packager  lld-link      llvm-pdbutil                   riscv64-unknown-elf-as          riscv64-unknown-elf-gcc-ranlib     riscv64-unknown-elf-objdump
analyze-build          clang-refactor          llvm-ar       llvm-profdata                  riscv64-unknown-elf-c++         riscv64-unknown-elf-gcov           riscv64-unknown-elf-ranlib
clang                  clang-rename            llvm-cov      llvm-ranlib                    riscv64-unknown-elf-c++filt     riscv64-unknown-elf-gcov-dump      riscv64-unknown-elf-readelf
clang++                clang-repl              llvm-cxxfilt  llvm-rc                        riscv64-unknown-elf-clang       riscv64-unknown-elf-gcov-tool      riscv64-unknown-elf-run
clang-18               clang-scan-deps         llvm-dlltool  llvm-readobj                   riscv64-unknown-elf-clang++     riscv64-unknown-elf-gdb            riscv64-unknown-elf-size
clang-check            diagtool                llvm-dwp      llvm-size                      riscv64-unknown-elf-cpp         riscv64-unknown-elf-gdb-add-index  riscv64-unknown-elf-strings
clang-cl               git-clang-format        llvm-lib      llvm-strings                   riscv64-unknown-elf-elfedit     riscv64-unknown-elf-gprof          riscv64-unknown-elf-strip
clang-cpp              hmaptool                llvm-mca      llvm-strip                     riscv64-unknown-elf-g++         riscv64-unknown-elf-ld             scan-build
clang-extdef-mapping   intercept-build         llvm-ml       llvm-symbolizer                riscv64-unknown-elf-gcc         riscv64-unknown-elf-ld.bfd         scan-build-py
clang-format           ld.lld                  llvm-nm       nvptx-arch                     riscv64-unknown-elf-gcc-14.2.0  riscv64-unknown-elf-lto-dump       scan-view
clang-linker-wrapper   ld64.lld                llvm-objcopy  riscv64-unknown-elf-addr2line  riscv64-unknown-elf-gcc-ar      riscv64-unknown-elf-nm             wasm-ld
clang-offload-bundler  lld                     llvm-objdump  riscv64-unknown-elf-ar         riscv64-unknown-elf-gcc-nm      riscv64-unknown-elf-objcopy

installed-tools/bin/clang --version
clang version 18.1.8 (https://github.com/llvm/llvm-project.git 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
Target: riscv64-unknown-unknown-elf
Thread model: posix
InstalledDir: /home/user/issue-1623/installed-tools/bin

My build log:

• build.log.zip: build.log.zip

As before, same host details as posted here:

• Unable to Build riscv-gnu-toolchain: libunwind Dependency Error #1623 (comment)

[404allen404]

@TommyMurphyTM1234
I noticed that your configuration is missing --enable-linux.

This is my command:

$ ./configure --prefix=$RISCV  --enable-llvm  --enable-linux --with-arch=rv64ima_zicsr --with-abi=lp64