406 lines
8.4 KiB
Markdown
406 lines
8.4 KiB
Markdown
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---
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# 🧭 GCC 13.3.0 从源码构建指南（适用于 Kylin Linux Advanced Server V10 / RHEL 系）
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目标：在 `/opt/gcc-13` 构建一套完全独立的新 GCC，不覆盖系统自带版本。
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附带可选 `/opt/binutils-2.40`，用于提升链接器兼容性。
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---
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## 一、系统准备
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### 1️⃣ 更新系统并安装构建依赖
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```bash
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sudo dnf groupinstall "Development Tools" -y
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sudo dnf install -y \
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gcc gcc-c++ make bison flex texinfo git wget curl xz gawk perl python3 \
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glibc-devel glibc-headers libstdc++-devel zlib-devel \
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gmp-devel mpfr-devel libmpc-devel isl-devel
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```
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> 若系统仓库的 `gmp/mpfr/mpc/isl` 太旧，也没关系，下面会采用 **内联构建**。
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---
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## 二、可选但推荐：升级 binutils (2.40)
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### 2️⃣ 构建并安装
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```bash
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cd soft
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wget https://mirrors.aliyun.com/gnu/binutils/binutils-2.40.tar.gz
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tar -xzf binutils-2.40.tar.gz
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mkdir build-binutils-2.40 && cd build-binutils-2.40
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../binutils-2.40/configure \
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--prefix=/usr/local/binutils-2.40 \
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--disable-multilib \
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--enable-gold \
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--enable-ld=default \
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--enable-plugins
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make -j"$(nproc)"
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make install
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```
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### 3️⃣ 激活新版 binutils
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```bash
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export PATH=/usr/local/binutils-2.40/bin:$PATH
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```
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验证：
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```bash
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ld --version | head -1
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as --version | head -1
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```
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输出应含 “2.40”。
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> ✅ 若系统已有较新 binutils，可跳过本节。
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---
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## 三、下载并准备 GCC 13.3.0 源码
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### 4️⃣ 获取源码
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```bash
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cd soft
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wget https://mirrors.aliyun.com/gnu/gcc/gcc-13.3.0/gcc-13.3.0.tar.xz
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tar -xf gcc-13.3.0.tar.xz
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cd gcc-13.3.0
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```
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### 5️⃣ 下载依赖库（推荐）
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```bash
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./contrib/download_prerequisites
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```
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该脚本会自动下载合适的：
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- GMP
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- MPFR
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- MPC
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- ISL
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> 若离线环境，可在其他机器下载后放到以下目录：
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>
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> ```
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> gcc-13.3.0/gmp/
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> gcc-13.3.0/mpfr/
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> gcc-13.3.0/mpc/
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> gcc-13.3.0/isl/
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> ```
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---
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```
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cat > contrib/download_prerequisites <<'EOF'
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#!/bin/sh
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# Modified for Aliyun GNU mirror + official ISL source (SourceForge)
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# Author: windyboy setup helper
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set -e
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gmp='gmp-6.2.1.tar.bz2'
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mpfr='mpfr-4.1.0.tar.bz2'
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mpc='mpc-1.2.1.tar.gz'
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isl='isl-0.24.tar.bz2'
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fetch='wget -c --no-check-certificate'
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# 阿里云 GNU 镜像基础路径
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base="https://mirrors.aliyun.com/gnu"
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download() {
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pkg=$1
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url=$2
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echo "==> Downloading $pkg"
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${fetch} "$url" -O "$pkg" || {
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echo "❌ Failed: $pkg"
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exit 1
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}
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}
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download "$gmp" "$base/gmp/$gmp"
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download "$mpfr" "$base/mpfr/$mpfr"
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download "$mpc" "$base/mpc/$mpc"
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download "$isl" "https://libisl.sourceforge.io/$isl"
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echo "==> Extracting..."
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for ar in $gmp $mpfr $mpc $isl; do
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tar -xf "$ar"
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ln -sf "${ar%.tar*}" "${ar%-*}"
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done
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echo "✅ All prerequisites downloaded and extracted successfully (Aliyun + SourceForge)."
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EOF
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chmod +x contrib/download_prerequisites
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```
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## 四、构建并安装 GCC 13.3.0
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### 6️⃣ 创建构建目录（out-of-tree）
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```bash
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cd soft
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mkdir build-gcc-13 && cd build-gcc-13
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```
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### 7️⃣ 配置参数
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```bash
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../gcc-13.3.0/configure \
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--prefix=/usr/local/gcc-13 \
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--enable-languages=c,c++ \
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--disable-multilib \
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--enable-checking=release \
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--enable-lto \
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--enable-threads=posix \
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--with-system-zlib
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```
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说明：
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- `--disable-multilib`：仅构建 64 位版，节省空间、避免冲突
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- `--enable-lto`：启用 Link Time Optimization
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- `--enable-threads=posix`：标准线程支持
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- `--with-system-zlib`：若安装了 zlib-devel
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---
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### 8️⃣ 编译与安装
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```bash
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make -j"$(nproc)"
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make install
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```
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💡 **提示：**
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- 首次编译耗时较久（15–60 分钟）。
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- 若出现 OOM，可降并行度：
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```bash
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sudo make -j4
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```
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---
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## 五、启用与测试新 GCC
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### 9️⃣ 临时启用
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```bash
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export PATH=/usr/local/gcc-13/bin:$PATH
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export LD_LIBRARY_PATH=/usr/local/gcc-13/lib64:$LD_LIBRARY_PATH
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```
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### 🔟 验证版本
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```bash
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gcc -v
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g++ -v
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```
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应显示：
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```
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gcc version 13.3.0 (GCC)
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```
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测试代码：
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```bash
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cat > hello.cpp <<'EOF'
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#include <iostream>
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int main() { std::cout << "Hello GCC " << __VERSION__ << std::endl; }
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EOF
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g++ -std=c++20 hello.cpp -O2 -o hello
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./hello
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```
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输出应为：
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```
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Hello GCC 13.3.0
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```
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---
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## 六、长期使用与并存管理
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### 11️⃣ 持久化环境变量
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**用户级：**
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```bash
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echo 'export PATH=/opt/gcc-13/bin:$PATH' >> ~/.bashrc
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echo 'export LD_LIBRARY_PATH=/opt/gcc-13/lib64:$LD_LIBRARY_PATH' >> ~/.bashrc
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source ~/.bashrc
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```
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**系统级（所有用户生效）：**
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```bash
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sudo tee /etc/profile.d/gcc13.sh <<'EOF'
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export PATH=/opt/gcc-13/bin:$PATH
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export LD_LIBRARY_PATH=/opt/gcc-13/lib64:$LD_LIBRARY_PATH
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EOF
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sudo chmod +x /etc/profile.d/gcc13.sh
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```
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---
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### 12️⃣ 运行时库兼容性（关键）
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若运行你的程序时报：
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```
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GLIBCXX_3.x.y not found
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```
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说明运行期加载了系统旧版 libstdc++。
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解决办法：
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1. 临时解决：
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```bash
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export LD_LIBRARY_PATH=/opt/gcc-13/lib64:$LD_LIBRARY_PATH
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```
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2. 编译期内嵌 rpath：
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```bash
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g++ main.cpp -Wl,-rpath=/opt/gcc-13/lib64 -O2 -o app
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```
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---
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## 七、常见问题与修复要点
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|问题|原因|解决方案|
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|`configure: error: GMP/MPFR/MPC not found`|系统库过旧或缺失|使用 `contrib/download_prerequisites`|
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|`collect2: error: ld returned 1 exit status`|binutils 太旧|启用 `/opt/binutils-2.40` 并确认 PATH|
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|`checking for sufficient default stack space... no`|栈空间不足|执行 `ulimit -s unlimited`|
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|`cc1plus: out of memory`|并行过高或 swap 不足|降低并行度、添加 swap|
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---
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## 八、验证构建质量（可选）
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自检：
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```bash
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cd /usr/local/src/build-gcc-13
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sudo make -k check > test.log 2>&1
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grep -A2 "Summary" test.log
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```
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成功率通常 > 99%，剩余测试多为非致命的浮点容差差异。
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---
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## ✅ 总结：完整流程一览
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```bash
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# 一次性复现构建流程 (示例版)
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sudo dnf groupinstall "Development Tools" -y
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sudo dnf install -y gcc gcc-c++ make bison flex texinfo git wget curl xz gawk perl python3 \
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glibc-devel glibc-headers libstdc++-devel zlib-devel gmp-devel mpfr-devel libmpc-devel isl-devel
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cd /usr/local/src
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sudo wget https://ftp.gnu.org/gnu/binutils/binutils-2.40.tar.xz
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sudo tar -xf binutils-2.40.tar.xz
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sudo mkdir build-binutils-2.40 && cd build-binutils-2.40
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sudo ../binutils-2.40/configure --prefix=/opt/binutils-2.40 --disable-multilib --enable-gold --enable-ld=default --enable-plugins
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sudo make -j"$(nproc)" && sudo make install
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export PATH=/opt/binutils-2.40/bin:$PATH
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cd /usr/local/src
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sudo wget https://ftp.gnu.org/gnu/gcc/gcc-13.3.0/gcc-13.3.0.tar.xz
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sudo tar -xf gcc-13.3.0.tar.xz
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cd gcc-13.3.0 && ./contrib/download_prerequisites
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cd /usr/local/src && sudo mkdir build-gcc-13 && cd build-gcc-13
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sudo ../gcc-13.3.0/configure --prefix=/opt/gcc-13 --enable-languages=c,c++ --disable-multilib \
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--enable-checking=release --enable-lto --enable-threads=posix --with-system-zlib
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sudo make -j"$(nproc)" && sudo make install
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echo 'export PATH=/opt/gcc-13/bin:$PATH' | sudo tee /etc/profile.d/gcc13.sh
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echo 'export LD_LIBRARY_PATH=/opt/gcc-13/lib64:$LD_LIBRARY_PATH' | sudo tee -a /etc/profile.d/gcc13.sh
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sudo chmod +x /etc/profile.d/gcc13.sh
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source /etc/profile.d/gcc13.sh
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```
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---
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是否希望我把上述完整命令整理成 **一键可执行的 build-gcc13.sh 脚本**（带错误检查、日志输出、并自动检测是否已安装 binutils）？
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这样你只需运行一行命令即可完成全部流程。
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openssl
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```
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./Configure --prefix=/usr/local/openssl-3 \
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--openssldir=/usr/local/openssl-3/ssl \
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shared zlib \
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enable-ec_nistp_64_gcc_128 \
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enable-tls1_3
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```
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```
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make -j$(nproc)
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make install
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```
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```
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export CC=/usr/local/gcc-13/bin/gcc
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export CXX=/usr/local/gcc-13/bin/g++
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export CPPFLAGS="-I/usr/local/openssl-3/include"
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export LDFLAGS="-L/usr/local/openssl-3/lib64"
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```
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```
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echo "/usr/local/openssl-3/lib64" | sudo tee /etc/ld.so.conf.d/openssl-3.conf
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```
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```
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export CPPFLAGS="-I/usr/local/openssl-3/include"
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export LDFLAGS="-L/usr/local/openssl-3/lib -Wl,-rpath=/usr/local/openssl-3/lib"
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export PKG_CONFIG_PATH="/usr/local/openssl-3/lib/pkgconfig"
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export LD_LIBRARY_PATH="/usr/local/openssl-3/lib:$LD_LIBRARY_PATH"
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export PATH="/usr/local/openssl-3/bin:$PATH"
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./configure \
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--prefix=/usr/local/openssh-10 \
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--sysconfdir=/usr/local/openssh-10/etc \
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--with-ssl-dir=/usr/local/openssl-3 \
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--with-pam \
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--with-md5-passwords
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```
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