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mayeutmayeut
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ci: build with clang instead of gcc
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‎README.rst‎

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@@ -68,7 +68,7 @@ The following platforms are supported with binary wheels:
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| Linux IBM Z | | manylinux2014+ s390x |
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| | | musllinux_1_2+ s390x |
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+---------------+---------------------------+
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| Linux RISC-V | | manylinux_2_35+ riscv64 |
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| Linux RISC-V | | manylinux_2_31+ riscv64 |
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| | | musllinux_1_2+ riscv64 |
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+---------------+---------------------------+
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| macOS 10.10+ | Intel |

‎pyproject.toml‎

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@@ -105,7 +105,7 @@ manylinux-aarch64-image = "manylinux2014"
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manylinux-ppc64le-image = "manylinux2014"
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manylinux-s390x-image = "manylinux2014"
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manylinux-armv7l-image = "manylinux_2_31"
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manylinux-riscv64-image = "ghcr.io/mayeut/manylinux_2_35:2025.08.02-2"
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manylinux-riscv64-image = "ghcr.io/mayeut/manylinux_2_31:2025.08.23-1"
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musllinux-x86_64-image = "musllinux_1_2"
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musllinux-i686-image = "musllinux_1_2"
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musllinux-aarch64-image = "musllinux_1_2"
@@ -121,9 +121,11 @@ environment = { MACOSX_DEPLOYMENT_TARGET = "10.10" }
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[[tool.cibuildwheel.overrides]]
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select = "*-*linux*"
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before-all = "./scripts/manylinux-build-and-install-openssl.sh"
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before-all = "./scripts/install-static-clang.sh && ./scripts/manylinux-build-and-install-openssl.sh"
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inherit.environment = "prepend"
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environment = { PKG_CONFIG_PATH = "/usr/local/ssl/lib/pkgconfig" }
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environment = { CC = "/opt/clang/bin/clang", CXX = "/opt/clang/bin/clang++", LDFLAGS = "-fuse-ld=lld -Wl,--build-id", PKG_CONFIG_PATH = "/usr/local/ssl/lib/pkgconfig" }
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inherit.environment-pass = "prepend"
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environment-pass = ["RUNNER_ARCH"]
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inherit.config-settings = "prepend"
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config-settings."cmake.define.OPENSSL_ROOT_DIR" = "/usr/local/ssl"
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config-settings."cmake.define.OPENSSL_USE_STATIC_LIBS" = "ON"

‎scripts/install-static-clang.sh‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,101 @@
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#!/bin/bash
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# Stop at any error, show all commands
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set -exuo pipefail
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TOOLCHAIN_PATH=/opt/clang
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# Download static-clang
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DEFAULT_ARCH="$(uname -m)"
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if [ "${STATIC_CLANG_ARCH:-}" == "" ]; then
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STATIC_CLANG_ARCH="${RUNNER_ARCH:-${DEFAULT_ARCH}}"
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fi
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case "${STATIC_CLANG_ARCH}" in
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ARM64|aarch64|arm64|arm64/*) GO_ARCH=arm64;;
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ARM|armv7l|armv8l|arm|arm/v7) GO_ARCH=arm;; # assume arm/v7 for arm
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X64|x86_64|amd64|amd64/*) GO_ARCH=amd64;;
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X86|i686|386) GO_ARCH=386;;
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ppc64le) GO_ARCH=ppc64le;;
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riscv64) GO_ARCH=riscv64;;
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s390x) GO_ARCH=s390x;;
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*) echo "No static-clang toolchain for ${CLANG_ARCH}">2; exit 1;;
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esac
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STATIC_CLANG_VERSION=20.1.8.0
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STATIC_CLANG_FILENAME="static-clang-linux-${GO_ARCH}.tar.xz"
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STATIC_CLANG_URL="https://github.com/mayeut/static-clang-images/releases/download/v${STATIC_CLANG_VERSION}/${STATIC_CLANG_FILENAME}"
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pushd /tmp
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cat<<'EOF' | grep "${STATIC_CLANG_FILENAME}" > "${STATIC_CLANG_FILENAME}.sha256"
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5ef070163055340d5bbf11263e60396b4f221c7dab90e167424e1b9b68a6048e static-clang-linux-386.tar.xz
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3a25cb4eae724cad96d7e504ce7669a824f61d57d27716fd47d0a9f1fe2d8fdf static-clang-linux-amd64.tar.xz
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250e5cc18fb7b6f7a4a0d8fe63ddf8a885f7351c4be7e4a164f4c04dfbee5a7f static-clang-linux-arm.tar.xz
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da56c2b13a0c3e676e010d61a87753a975de18ae9eaa65247ca6a6d22bb95ab4 static-clang-linux-arm64.tar.xz
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466af6ca1be0cd4f2ae6704ce5ae0f86a1648e999756def1680b639bc63d2916 static-clang-linux-ppc64le.tar.xz
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8078365b22f1d5290db7e60501daa80c91da8d530720d3fc974ab3f81e56bae5 static-clang-linux-riscv64.tar.xz
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97e933c45a35c827530888e1c2f6b6eee0140ccb2089fdfdf9f99454d4c470e0 static-clang-linux-s390x.tar.xz
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EOF
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curl -fsSLO "${STATIC_CLANG_URL}"
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sha256sum -c "${STATIC_CLANG_FILENAME}.sha256"
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tar -C /opt -xf "${STATIC_CLANG_FILENAME}"
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popd
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# configure target triple
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case "${AUDITWHEEL_POLICY}-${AUDITWHEEL_ARCH}" in
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manylinux*-armv7l) TARGET_TRIPLE=armv7-unknown-linux-gnueabihf;;
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musllinux*-armv7l) TARGET_TRIPLE=armv7-alpine-linux-musleabihf;;
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manylinux*-ppc64le) TARGET_TRIPLE=powerpc64le-unknown-linux-gnu;;
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musllinux*-ppc64le) TARGET_TRIPLE=powerpc64le-alpine-linux-musl;;
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manylinux*-*) TARGET_TRIPLE=${AUDITWHEEL_ARCH}-unknown-linux-gnu;;
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musllinux*-*) TARGET_TRIPLE=${AUDITWHEEL_ARCH}-alpine-linux-musl;;
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esac
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case "${AUDITWHEEL_ARCH}" in
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riscv64) M_ARCH="-march=rv64gc";;
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x86_64) M_ARCH="-march=x86-64";;
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armv7l) M_ARCH="-march=armv7a";;
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i686) M_ARCH="-march=i686";;
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esac
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GCC_TRIPLE=$(gcc -dumpmachine)
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if [ "${AUDITWHEEL_ARCH}" == "riscv64" ]; then
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# the LDFLAGS from pyproject.toml seems not to be taken into account when building CMake (no problem with OpenSSL)
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# FAILED: [code=1] Source/kwsys/cmsysTestProcess
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# : && /opt/clang/bin/clang -D_POSIX_C_SOURCE=199506L -D_POSIX_SOURCE=1 -D_SVID_SOURCE=1 -D_BSD_SOURCE=1 -O3 -DNDEBUG -lstdc++ -lgcc -lrt Source/kwsys/CMakeFiles/cmsysTestProcess.dir/testProcess.c.o -o Source/kwsys/cmsysTestProcess Source/kwsys/libcmsys_c.a && :
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# /usr/bin/riscv64-linux-gnu-ld: -march=rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_zicsr2p0_zifencei2p0_zmmul1p0_zaamo1p0_zalrsc1p0: unsupported ISA subset `z'
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# /usr/bin/riscv64-linux-gnu-ld: failed to merge target specific data of file Source/kwsys/libcmsys_c.a(ProcessUNIX.c.o)
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# /usr/bin/riscv64-linux-gnu-ld: -march=rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_zicsr2p0_zifencei2p0_zmmul1p0_zaamo1p0_zalrsc1p0: unsupported ISA subset `z'
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# /usr/bin/riscv64-linux-gnu-ld: failed to merge target specific data of file Source/kwsys/libcmsys_c.a(System.c.o)
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# clang: error: linker command failed with exit code 1 (use -v to see invocation)
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IMPLICIT_LLD="-fuse-ld=lld"
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fi
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cat<<EOF >"${TOOLCHAIN_PATH}/bin/${AUDITWHEEL_PLAT}.cfg"
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-target ${TARGET_TRIPLE}
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${M_ARCH:-}
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--gcc-toolchain=${DEVTOOLSET_ROOTPATH:-}/usr
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--gcc-triple=${GCC_TRIPLE}
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${IMPLICIT_LLD:-}
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EOF
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cat<<EOF >"${TOOLCHAIN_PATH}/bin/clang.cfg"
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@${AUDITWHEEL_PLAT}.cfg
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EOF
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cat<<EOF >"${TOOLCHAIN_PATH}/bin/clang++.cfg"
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@${AUDITWHEEL_PLAT}.cfg
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EOF
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cat<<EOF >"${TOOLCHAIN_PATH}/bin/clang-cpp.cfg"
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@${AUDITWHEEL_PLAT}.cfg
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EOF
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# override entrypoint to add the toolchain to PATH
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mv /usr/local/bin/manylinux-entrypoint /usr/local/bin/manylinux-entrypoint-org
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cat<<EOF >/usr/local/bin/manylinux-entrypoint
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#!/bin/bash
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set -eu
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export PATH="${TOOLCHAIN_PATH}/bin:\${PATH}"
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exec /usr/local/bin/manylinux-entrypoint-org "\$@"
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EOF
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chmod +x /usr/local/bin/manylinux-entrypoint

‎scripts/manylinux-build-and-install-openssl.sh‎

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Original file line numberDiff line numberDiff line change
@@ -46,6 +46,12 @@ check_sha256sum ${OPENSSL_ROOT}.tar.gz ${OPENSSL_HASH}
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tar -xzf ${OPENSSL_ROOT}.tar.gz
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rm -rf ${OPENSSL_ROOT}.tar.gz
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LIBATOMIC=
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if [ "${AUDITWHEEL_ARCH}" == "i686" ]; then
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LIBATOMIC=-latomic
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fi
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export LDLIBS="${LIBATOMIC}"
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# Configure
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pushd ${OPENSSL_ROOT}
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./config no-shared no-tests -fPIC --prefix=/usr/local/ssl --openssldir=/usr/local/ssl > /dev/null

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