add build static lib script

Author: isVoid

build_static_libs.sh

@@ -0,0 +1,66 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Build only static libraries of LLVM and Clang and install CMake packages
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+SRC_DIR="${ROOT_DIR}/llvm"
+BUILD_DIR="${ROOT_DIR}/build-static"
+INSTALL_DIR="${ROOT_DIR}/install"
+
+if [[ ! -d "${SRC_DIR}" ]]; then
+  echo "Error: expected to find LLVM source at ${SRC_DIR}. Run this from the llvm-project root." >&2
+  exit 1
+fi
+
+# Configurables via env vars
+BUILD_TYPE="${BUILD_TYPE:-Release}"
+TARGETS_TO_BUILD="${LLVM_TARGETS_TO_BUILD:-host}"
+
+if [[ "${CLEAN:-0}" == "1" ]]; then
+  echo "[clean] Removing ${BUILD_DIR} and ${INSTALL_DIR}"
+  rm -rf "${BUILD_DIR}" "${INSTALL_DIR}"
+fi
+
+mkdir -p "${BUILD_DIR}" "${INSTALL_DIR}"
+
+GENERATOR="Ninja"
+if ! command -v ninja >/dev/null 2>&1; then
+  GENERATOR="Unix Makefiles"
+fi
+
+echo "[configure] Generator: ${GENERATOR}"
+echo "[configure] Build type: ${BUILD_TYPE}"
+echo "[configure] Targets: ${TARGETS_TO_BUILD}"
+echo "[configure] Build dir: ${BUILD_DIR}"
+echo "[configure] Install dir: ${INSTALL_DIR}"
+
+cmake -S "${SRC_DIR}" -B "${BUILD_DIR}" -G "${GENERATOR}" \
+  -DCMAKE_BUILD_TYPE="${BUILD_TYPE}" \
+  -DCMAKE_INSTALL_PREFIX="${INSTALL_DIR}" \
+  -DLLVM_ENABLE_PROJECTS="clang" \
+  -DLLVM_TARGETS_TO_BUILD="${TARGETS_TO_BUILD}" \
+  -DBUILD_SHARED_LIBS=OFF \
+  -DLLVM_ENABLE_PIC=ON \
+  -DLLVM_ENABLE_RTTI=ON \
+  -DLLVM_ENABLE_EH=ON \
+  -DLLVM_LINK_LLVM_DYLIB=OFF \
+  -DLLVM_BUILD_LLVM_C_DYLIB=OFF \
+  -DLLVM_INCLUDE_TESTS=OFF \
+  -DLLVM_INCLUDE_EXAMPLES=OFF \
+  -DLLVM_INCLUDE_BENCHMARKS=OFF \
+  -DLLVM_INCLUDE_DOCS=OFF \
+  -DLLVM_ENABLE_BINDINGS=OFF \
+  -DLLVM_BUILD_TOOLS=OFF \
+  -DCLANG_INCLUDE_TESTS=OFF \
+  -DCLANG_INCLUDE_DOCS=OFF \
+  -DCLANG_BUILD_TOOLS=OFF \
+  -DLIBCLANG_BUILD_STATIC=ON \
+  ${CMAKE_EXTRA_ARGS:-}
+
+echo "[build] Building and installing to ${INSTALL_DIR}"
+cmake --build "${BUILD_DIR}" --target install -j "$(nproc)"
+
+echo "[done] Static LLVM/Clang libraries and CMake packages installed under: ${INSTALL_DIR}"
+
+