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linux/build_zstd_linux.sh

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+#!/usr/bin/env bash
+# build_zstd_linux.sh - 用官方源码编译 libzstd.a (x86_64 Linux)
+# 产出：linux/lib/libzstd.a  （覆盖旧版本）
+#
+# 用法（在 WSL 或 Linux 下）：
+#   cd linux && bash build_zstd_linux.sh
+
+set -euo pipefail
+cd "$(dirname "$0")"
+
+ZSTD_VERSION="1.5.6"
+ZSTD_TAR="zstd-${ZSTD_VERSION}.tar.gz"
+ZSTD_URL="https://github.com/facebook/zstd/releases/download/v${ZSTD_VERSION}/${ZSTD_TAR}"
+ZSTD_DIR="zstd-${ZSTD_VERSION}"
+BUILD_DIR="zstd_build"
+OUT_DIR="lib"
+
+# --- 下载源码 ---
+if [[ ! -d "$ZSTD_DIR" ]]; then
+    echo "Downloading zstd $ZSTD_VERSION..."
+    wget -q "$ZSTD_URL" -O "$ZSTD_TAR" || curl -sSL "$ZSTD_URL" -o "$ZSTD_TAR"
+    tar xf "$ZSTD_TAR"
+    rm "$ZSTD_TAR"
+fi
+
+# --- CMake 构建 ---
+rm -rf "$BUILD_DIR"
+cmake \
+    -B "$BUILD_DIR" -S "$ZSTD_DIR/build/cmake" \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_C_FLAGS="-O2 -g0" \
+    -DZSTD_BUILD_STATIC=ON \
+    -DZSTD_BUILD_SHARED=OFF \
+    -DZSTD_BUILD_PROGRAMS=OFF \
+    -DZSTD_BUILD_TESTS=OFF \
+    -DZSTD_LEGACY_SUPPORT=0
+
+cmake --build "$BUILD_DIR" --config Release -j"$(nproc)"
+
+# --- 拷贝产物 ---
+mkdir -p "$OUT_DIR"
+cp "$BUILD_DIR/lib/libzstd.a" "$OUT_DIR/libzstd.a"
+strip --strip-debug "$OUT_DIR/libzstd.a" 2>/dev/null || true
+ls -lh "$OUT_DIR/libzstd.a"
+
+rm -rf "$BUILD_DIR" "$ZSTD_DIR"
+
+echo
+echo "===== Done ====="
+echo "libzstd.a 已写入 linux/lib/libzstd.a"