[CICD] Add openEuler 24.03 RPM build support

.github/workflows/build-rpm.yml

@@ -16,6 +16,20 @@ on:
 jobs:
   build-rpm:
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # Original Fedora target — artifact name unchanged so
+          # downstream collectors keep working.
+          - target: fedora43
+            base_image: fedora
+            base_image_version: "43"
+            artifact: flagsparse-amd64-rpm-packages
+          - target: openeuler2403
+            base_image: openeuler/openeuler
+            base_image_version: 24.03-lts
+            artifact: flagsparse-amd64-oe2403-rpm-packages
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
@@ -25,12 +39,15 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      - name: Build .rpm
+      - name: Build .rpm (${{ matrix.target }})
         run: bash packaging/rpm/build-flagsparse-rpm.sh
+        env:
+          BASE_IMAGE: ${{ matrix.base_image }}
+          BASE_IMAGE_VERSION: ${{ matrix.base_image_version }}
 
       - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: flagsparse-amd64-rpm-packages
+          name: ${{ matrix.artifact }}
           path: rpm-packages/*.rpm
           retention-days: 7

packaging/rpm/build-flagsparse-rpm.sh

@@ -2,12 +2,22 @@
 set -euo pipefail
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 PROJECT_DIR="$(dirname "$(dirname "$SCRIPT_DIR")")"
-BASE_IMAGE_VERSION="${1:-43}"
-IMAGE_TAG="flagsparse-rpm:f${BASE_IMAGE_VERSION}"
-OUTPUT_DIR="${PROJECT_DIR}/rpm-packages"
+# Defaults preserve the original single-arg Fedora flow:
+#   ./build-flagsparse-rpm.sh [fedora-version]
+# Other distros via env, e.g. openEuler 24.03:
+#   BASE_IMAGE=openeuler/openeuler BASE_IMAGE_VERSION=24.03-lts ./build-flagsparse-rpm.sh
+BASE_IMAGE="${BASE_IMAGE:-fedora}"
+BASE_IMAGE_VERSION="${BASE_IMAGE_VERSION:-${1:-43}}"
+if [ "${BASE_IMAGE}" = "fedora" ]; then
+    IMAGE_TAG="flagsparse-rpm:f${BASE_IMAGE_VERSION}"
+else
+    IMAGE_TAG="flagsparse-rpm:$(echo "${BASE_IMAGE}-${BASE_IMAGE_VERSION}" | tr '/' '-')"
+fi
+OUTPUT_DIR="${OUTPUT_DIR:-${PROJECT_DIR}/rpm-packages}"
 
 docker build --network=host \
     -f "${SCRIPT_DIR}/dockerfiles/Dockerfile.rpm" \
+    --build-arg BASE_IMAGE="$BASE_IMAGE" \
     --build-arg BASE_IMAGE_VERSION="$BASE_IMAGE_VERSION" \
     -t "$IMAGE_TAG" "$PROJECT_DIR"
 

packaging/rpm/dockerfiles/Dockerfile.rpm

@@ -3,11 +3,27 @@ ARG BASE_IMAGE_VERSION=43
 
 FROM ${BASE_IMAGE}:${BASE_IMAGE_VERSION}
 
+# pyproject-rpm-macros exists on Fedora/EL9+ but not openEuler 24.03;
+# the spec falls back to a pip-based build when it is absent. Same RUN
+# as the toolchain install: a separate layer would re-download all repo
+# metadata (dnf clean all), which on slow mirrors costs tens of minutes.
 RUN dnf install -y \
-    rpm-build rpmdevtools pyproject-rpm-macros \
+    rpm-build rpmdevtools \
     python3-devel python3-setuptools python3-wheel python3-pip \
+    && (dnf install -y pyproject-rpm-macros \
+        || echo "pyproject-rpm-macros unavailable; spec uses pip fallback") \
     && dnf clean all
 
+# openEuler images define %dist as empty (official .oe* tags are
+# injected by EulerMaker); reconstruct it so local/CI builds get
+# distro-tagged Release fields like official packages.
+RUN if [ -z "$(rpm --eval '%{?dist}')" ]; then \
+        . /etc/os-release && \
+        case "${ID}" in \
+            openEuler) echo "%dist .oe$(echo "${VERSION_ID}" | tr -d '.')" >> /root/.rpmmacros ;; \
+        esac; \
+    fi
+
 RUN rpmdev-setuptree
 
 COPY . /workspace/FlagSparse

packaging/rpm/specs/flagsparse.spec

@@ -1,5 +1,17 @@
 %global debug_package %{nil}
 
+# Distros that ship pyproject-rpm-macros (Fedora, EL9+) build via the
+# %%pyproject_* macro family — that path is unchanged. Distros without
+# it (openEuler 24.03, EL8-family) fall back to a plain pip
+# wheel/install build. Capability-detected at parse time, so the build
+# container must have its python toolchain installed before rpmbuild
+# runs (both Dockerfile.rpm paths do).
+%if %{defined pyproject_wheel}
+%global has_pyproject_macros 1
+%else
+%global has_pyproject_macros 0
+%endif
+
 Name:           python3-flagsparse
 Version:        1.0.0
 Release:        1%{?dist}
@@ -13,7 +25,9 @@ BuildRequires:  python3-devel
 BuildRequires:  python3-setuptools >= 60
 BuildRequires:  python3-wheel
 BuildRequires:  python3-pip
+%if %{has_pyproject_macros}
 BuildRequires:  pyproject-rpm-macros
+%endif
 
 %description
 Sparse matrix operators (SpMM, SpMV, sampled dense-dense) for FlagOS-supported accelerators.
@@ -22,11 +36,20 @@ Sparse matrix operators (SpMM, SpMV, sampled dense-dense) for FlagOS-supported a
 %autosetup -n flagsparse-%{version}
 
 %build
+%if %{has_pyproject_macros}
 %pyproject_wheel
+%else
+%{__python3} -m pip wheel --no-deps --no-build-isolation --wheel-dir dist .
+%endif
 
 %install
+%if %{has_pyproject_macros}
 %pyproject_install
 %pyproject_save_files flagsparse
+%else
+%{__python3} -m pip install --no-deps --no-index --no-warn-script-location \
+    --root %{buildroot} dist/*.whl
+%endif
 
 %check
 # Smoke find_spec test (no actual import) — verifies the built module
@@ -37,9 +60,20 @@ PYTHONDONTWRITEBYTECODE=1 \
     PYTHONPATH=%{buildroot}%{python3_sitelib} \
     python3 -c "import importlib.util; s = importlib.util.find_spec('flagsparse'); assert s and s.origin, 'flagsparse not findable'; print('OK: flagsparse at', s.origin)"
 
+%if %{has_pyproject_macros}
 %files -f %{pyproject_files}
 %license LICENSE
+%else
+%files
+%license LICENSE
+%{python3_sitelib}/flagsparse/
+%{python3_sitelib}/flagsparse-%{version}.dist-info/
+%endif
 
 %changelog
+* Sat Jul 11 2026 FlagOS Contributors <contact@flagos.io> - 1.0.0-1
+- Add pip-based fallback for distros without pyproject-rpm-macros
+  (openEuler 24.03); Fedora build path unchanged.
+
 * Wed May 13 2026 FlagOS Contributors <contact@flagos.io> - 1.0.0-1
 - Initial RPM packaging.