Add experimental CI for release builds

Author: oitel

.github/workflows/build-release.yml

@@ -0,0 +1,51 @@
+name: Build Release
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build-linux:
+    runs-on: ${{ matrix.runner }}
+    container:
+      image: rockylinux:8
+    strategy:
+      fail-fast: false
+      matrix:
+        arch: [x64, arm64]
+        include:
+          - arch: x64
+            runner: ubuntu-24.04
+          - arch: arm64
+            runner: ubuntu-24.04-arm
+
+    steps:
+      - name: Checkout
+        uses: action/checkout@v6
+
+      - name: Install build tools
+        run: |
+          dnf install -y epel-release
+          dnf install -y --enablerepo powertools \
+            gcc-toolset-14 cmake ninja-build python3
+
+      - name: Download LLVM
+        run: |
+          ci/download_llvm.sh 22.1.8
+
+      - name: Build libclang
+        run: |
+          source /opt/rh/gcc-toolset-14/enable
+          ci/build_llvm.sh
+
+      - name: Build
+        run: |
+          source /opt/rh/gcc-toolset-14/enable
+          cmake -B build -G Ninja \
+            -D Clang_DIR=llvm-out/lib/cmake/clang \
+            -D CMAKE_BUILD_TYPE=Release
+          cmake --build build --parallel $(nproc)
+
+      - name: Verify build
+        run: |
+          ldd build/mrbind*
+          build/mrbind --help

ci/build_llvm.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+set -e
+
+SRC_DIR=${1:-llvm-src/llvm}
+BUILD_DIR=llvm-build
+OUT_DIR=llvm-out
+
+cmake -G Ninja -S "$SRC_DIR" -B "$BUILD_DIR" \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_PREFIX="$OUT_DIR" \
+    -DCMAKE_INSTALL_LIBDIR=lib \
+    -DLLVM_ENABLE_PROJECTS=clang \
+    -DLLVM_TARGETS_TO_BUILD="" \
+    -DBUILD_SHARED_LIBS=OFF \
+    -DLLVM_BUILD_LLVM_DYLIB=OFF \
+    -DLLVM_LINK_LLVM_DYLIB=OFF \
+    -DLLVM_ENABLE_PIC=ON \
+    -DLLVM_ENABLE_RTTI=OFF \
+    -DLLVM_ENABLE_EH=OFF \
+    -DLLVM_ENABLE_ASSERTIONS=OFF \
+    -DLLVM_ENABLE_ZLIB=OFF \
+    -DLLVM_ENABLE_ZSTD=OFF \
+    -DLLVM_ENABLE_TERMINFO=OFF \
+    -DLLVM_ENABLE_LIBXML2=OFF \
+    -DLLVM_ENABLE_LIBEDIT=OFF \
+    -DLLVM_ENABLE_LIBPFM=OFF \
+    -DLLVM_ENABLE_CURL=OFF \
+    -DLLVM_ENABLE_HTTPLIB=OFF \
+    -DLLVM_INCLUDE_TESTS=OFF \
+    -DLLVM_INCLUDE_EXAMPLES=OFF \
+    -DLLVM_INCLUDE_BENCHMARKS=OFF \
+    -DLLVM_INCLUDE_DOCS=OFF \
+    -DCLANG_INCLUDE_TESTS=OFF \
+    -DCLANG_INCLUDE_DOCS=OFF \
+    -DCLANG_ENABLE_ARCMT=OFF \
+    -DCLANG_ENABLE_STATIC_ANALYZER=OFF \
+    "-DCMAKE_C_FLAGS=-ffunction-sections -fdata-sections" \
+    "-DCMAKE_CXX_FLAGS=-ffunction-sections -fdata-sections"
+ninja -C "$BUILD_DIR" -j$(nproc) clangTooling
+
+COMPONENTS="llvm-headers;clang-headers;clang-resource-headers;cmake-exports;clang-cmake-exports"
+for LIB in "$BUILD_DIR"/lib/lib*.a ; do
+    LIBNAME="$(basename "$LIB" .a)"
+    COMPONENTS="$COMPONENTS;${LIBNAME#lib}"
+done
+cmake -S "$SRC_DIR" -B "$BUILD_DIR" -DLLVM_DISTRIBUTION_COMPONENTS="$COMPONENTS"
+ninja -C "$BUILD_DIR" -j$(nproc) install-distribution

ci/download_llvm.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -eo pipefail
+
+LLVM_VERSION="${1:-22.1.0}"
+LLVM_URL="https://github.com/llvm/llvm-project/releases/download/llvmorg-${LLVM_VERSION}/llvm-project-${LLVM_VERSION}.src.tar.xz" 
+
+OUT_DIR="${2:-llvm-src}"
+
+mkdir -p "$OUT_DIR"
+curl -fL "$LLVM_URL" | tar -xJ --strip-components=1 -C "$OUT_DIR"