Conan 配合 Clangd + CMake

1. 用官方模版初始化项目

   conan new cmake_exe -d name=myapp -d version=0.1
   

2. 将 conanfile.py 中的 generate 替换为

   def generate(self):
       deps = CMakeDeps(self)
       deps.generate()
       tc = CMakeToolchain(self)
       
       # 强制注入头文件路径 (解决 IDE 高亮红线)
       for dep in self.dependencies.values():
           for include_path in dep.cpp_info.includedirs:
               tc.extra_cxxflags.append(f"-I{include_path}")
           
           # 使用 cache_variables 注入链接标志 (解决链接问题)
           link_flags = []
           for lib_path in dep.cpp_info.libdirs:
               link_flags.append(f"-L{lib_path}")
           for lib in dep.cpp_info.libs:
               link_flags.append(f"-l{lib}")
           for framework in dep.cpp_info.frameworks:
               link_flags.append(f"-framework {framework}")
               
           if link_flags:
               current = tc.cache_variables.get("CMAKE_EXE_LINKER_FLAGS", "")
               tc.cache_variables["CMAKE_EXE_LINKER_FLAGS"] = f"{current} {' '.join(link_flags)}"
   
       tc.generate()
   

3. conan install . --build=missing
   cmake -B build -S . -DCMAKE_TOOLCHAIN_FILE=build/Release/generators/conan_toolchain.cmake -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DCMAKE_BUILD_TYPE=Release
   

   ln -s build/Release/compile_commands.json compile_commands.json
   

   这一步将会生成 compile_commands.json，并且正确设置链接标志。

4. conan build .