4c9c3aae23
To avoid surprises when libstdc++, clang, or other components in the toolchain introduce regressions, we introduce a "future toolchain". This builds on the Fedora version under active development, and the development branches of gcc and llvm. The future toolchain is not intended to be frozen. Rather, periodically we will build the future toolchain, then build ScyllaDB and run its unit tests under that toolchain, then discard it. Any problems will then have be be tracked down by a developer and either reported to the source repository, or fixed in ScyllaDB. Closes scylladb/scylladb#27964
87 lines
3.3 KiB
Docker
87 lines
3.3 KiB
Docker
# Copyright 2026-present ScyllaDB
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# SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
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# Dockerfile to build a toolchain with recent GCC and Clang/LLVM on Fedora Rawhide.
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# This can be used to look for regressions or incompatibilities in the toolchain under
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# development.
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#
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# to build:
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# podman build -t future-toolchain -f tools/toolchain/future.dockerfile .
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#
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# to use:
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# ./tools/toolchain/dbuild --image future-toolchain -it --
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FROM registry.fedoraproject.org/fedora:rawhide
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RUN echo install_weak_deps=False >> /etc/dnf/dnf.conf
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# Install dependencies using bind-mounted source tree (read-only from build context)
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RUN --mount=type=bind,source=.,target=/src \
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dnf -y update && \
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cd /src && ./install-dependencies.sh
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# Build dependencies for GCC and Clang
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RUN dnf -y install git flex texinfo gmp-devel mpfr-devel libmpc-devel zlib-devel \
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python3 libedit-devel libxml2-devel ncurses-devel swig
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# Build GCC from git
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ARG GCC_VERSION=master
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RUN git clone --depth=1 --branch="${GCC_VERSION}" git://gcc.gnu.org/git/gcc.git /tmp/gcc-src && \
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mkdir /tmp/gcc-build && cd /tmp/gcc-build && \
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/tmp/gcc-src/configure \
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--prefix=/usr/local \
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--enable-languages=c,c++ \
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--disable-multilib \
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--disable-bootstrap \
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--disable-libsanitizer \
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--enable-libstdcxx-threads \
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--with-system-zlib && \
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make -j$(nproc) && \
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make install && \
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rm -rf /tmp/gcc-src /tmp/gcc-build
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# Update library cache for new libstdc++
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RUN echo "/usr/local/lib64" > /etc/ld.so.conf.d/local.conf && ldconfig
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# Build Clang/LLVM from git, configured to use GCC's libstdc++ from /usr/local
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ARG LLVM_VERSION=main
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RUN ARCH=$(uname -m) && \
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if [ "$ARCH" = "x86_64" ]; then LLVM_TARGET=X86; \
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elif [ "$ARCH" = "aarch64" ]; then LLVM_TARGET=AArch64; \
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else echo "Unsupported architecture: $ARCH" && exit 1; fi && \
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git clone --depth=1 --branch="${LLVM_VERSION}" https://github.com/llvm/llvm-project.git /tmp/llvm-src && \
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mkdir /tmp/llvm-build && cd /tmp/llvm-build && \
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cmake -G Ninja /tmp/llvm-src/llvm \
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-DCMAKE_BUILD_TYPE=Release \
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-DCMAKE_INSTALL_PREFIX=/usr/local \
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-DCMAKE_C_COMPILER=clang \
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-DCMAKE_CXX_COMPILER=clang++ \
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-DLLVM_ENABLE_PROJECTS="clang;lld;clang-tools-extra" \
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-DLLVM_ENABLE_RUNTIMES="compiler-rt" \
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-DLLVM_TARGETS_TO_BUILD="${LLVM_TARGET};WebAssembly" \
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-DLLVM_USE_LINKER=lld \
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-DCLANG_DEFAULT_CXX_STDLIB=libstdc++ \
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-DCLANG_DEFAULT_RTLIB=libgcc \
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-DCLANG_DEFAULT_LINKER=lld \
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-DLLVM_BUILD_LLVM_DYLIB=ON \
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-DLLVM_LINK_LLVM_DYLIB=ON \
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-DLLVM_INCLUDE_BENCHMARKS=OFF \
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-DLLVM_INCLUDE_EXAMPLES=OFF \
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-DLLVM_INCLUDE_TESTS=OFF && \
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ninja && \
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ninja install && \
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rm -rf /tmp/llvm-src /tmp/llvm-build
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# Ensure clang uses the correct GCC toolchain by default
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# Config files are searched at <driver-path>/../etc/<driver-name>.cfg
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RUN mkdir -p /usr/local/etc && \
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echo "--gcc-toolchain=/usr/local" > /usr/local/etc/clang.cfg && \
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cp /usr/local/etc/clang.cfg /usr/local/etc/clang++.cfg
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# Verify clang finds the correct libstdc++ headers and library
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RUN echo '#include <string>' > /tmp/test.cpp && \
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/usr/local/bin/clang++ -v -c /tmp/test.cpp -o /tmp/test.o 2>&1 | grep -E "usr/local.*(include|lib)" && \
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rm -f /tmp/test.cpp /tmp/test.o
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CMD /bin/bash
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