everything-claude-code/docs/zh-CN/commands/cpp-build.md

description

description
逐步修复C++构建错误、CMake问题和链接器问题。调用cpp-build-resolver代理进行最小化、精准的修复。

C++ 构建与修复

此命令调用 cpp-build-resolver 代理，以最小的更改逐步修复 C++ 构建错误。

此命令的作用

1. 运行诊断：执行 cmake --build、clang-tidy、cppcheck
2. 解析错误：按文件分组并按严重性排序
3. 逐步修复：一次修复一个错误
4. 验证每个修复：每次更改后重新运行构建
5. 报告摘要：显示已修复的内容和剩余的问题

何时使用

在以下情况下使用 /cpp-build：

• cmake --build build 因错误而失败时
• 链接器错误（未定义的引用，多重定义）
• 模板实例化失败
• 包含/依赖项问题
• 拉取更改后导致构建失败时

运行的诊断命令

# CMake configure
cmake -B build -S .

# Build
cmake --build build 2>&1 | head -100

# Static analysis (if available)
clang-tidy src/*.cpp -- -std=c++17
cppcheck --enable=all src/

示例会话

User: /cpp-build

Agent:
# C++ Build Resolution

## Initial Diagnostics

```bash
$ cmake --build build
src/service/user.cpp:25:15: error: use of undeclared identifier 'UserRepository'
src/handler/api.cpp:42:9: error: no matching function for call to 'process'
src/handler/api.cpp:58:1: error: non-void function does not return a value

发现的错误：3

修复 1：未声明的标识符

文件：src/service/user.cpp:25 错误：使用了未声明的标识符 'UserRepository' 原因：缺少包含

// Added include
#include "repository/user_repository.hpp"

$ cmake --build build
# 2 errors remaining

修复 2：无匹配函数

文件：src/handler/api.cpp:42 错误：没有匹配的函数用于调用 'process'

// Changed
process(params.get("count"));
// To
process(std::stoi(params.get("count")));

$ cmake --build build
# 1 error remaining

修复 3：缺少返回

文件：src/handler/api.cpp:58 错误：非 void 函数未返回值

std::optional<User> getUser(const std::string& id) {
    if (id.empty()) {
        return std::nullopt;
    }
    auto user = findUser(id);
    // Added missing return
    return user;
}

$ cmake --build build
# Build successful!

最终验证

$ ctest --test-dir build --output-on-failure
Test project build
    1/5 Test #1: unit_tests ........   Passed    0.02 sec
    2/5 Test #2: integration_tests    Passed    0.15 sec
All tests passed.

摘要

指标	数量
已修复的构建错误	3
已修复的链接器错误	0
已修改的文件	2
剩余问题	0

构建状态：✅ 成功

## Common Errors Fixed

| Error | Typical Fix |
|-------|-------------|
| `undeclared identifier` | Add `#include` or fix typo |
| `no matching function` | Fix argument types or add overload |
| `undefined reference` | Link library or add implementation |
| `multiple definition` | Use `inline` or move to .cpp |
| `incomplete type` | Replace forward decl with `#include` |
| `no member named X` | Fix member name or include |
| `cannot convert X to Y` | Add appropriate cast |
| `CMake Error` | Fix CMakeLists.txt configuration |

## Fix Strategy

1. **Compilation errors first** - Code must compile
2. **Linker errors second** - Resolve undefined references
3. **Warnings third** - Fix with `-Wall -Wextra`
4. **One fix at a time** - Verify each change
5. **Minimal changes** - Don't refactor, just fix

## Stop Conditions

The agent will stop and report if:
- Same error persists after 3 attempts
- Fix introduces more errors
- Requires architectural changes
- Missing external dependencies

## Related Commands

- `/cpp-test` - Run tests after build succeeds
- `/cpp-review` - Review code quality
- `/verify` - Full verification loop

## Related

- Agent: `agents/cpp-build-resolver.md`
- Skill: `skills/cpp-coding-standards/`