cmake config_error ai_generated true

CMake 错误：INTERFACE_LIBRARY 目标只能包含 INTERFACE 属性。目标 "mylib" 的 SOURCES 属性不是 INTERFACE 类型。

CMake Error: INTERFACE_LIBRARY targets may only have INTERFACE properties. The SOURCES property of target "mylib" is not INTERFACE.

ID: cmake/interface-library-sources-property

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85%修复率
88%置信度
1证据数
2023-05-15首次发现

版本兼容性

版本状态引入弃用备注
CMake 3.10+ active — — —
CMake 3.20+ active — — —
CMake 3.28+ active — — —

根因分析

INTERFACE 库目标被错误地通过 set_target_properties 或 add_library 赋予源文件参数，这是不允许的，因为 INTERFACE 库是仅头文件的，没有构建产物。

English

An INTERFACE library target was mistakenly given source files via set_target_properties or add_library with source arguments, which is not allowed because INTERFACE libraries are header-only and have no build artifacts.

generic

官方文档

https://cmake.org/cmake/help/latest/manual/cmake-buildsystem.7.html#interface-libraries

解决方案

  1. Remove source files from add_library call and use target_sources with INTERFACE scope if needed, or convert to a STATIC library if sources are required.
  2. Define the target as an OBJECT library if you need to collect object files, then link with other targets.
  3. Use target_include_directories with INTERFACE scope to propagate headers without sources.

无效尝试

常见但无效的做法:

  1. Adding SOURCES property via set_property with INTERFACE scope 95% 失败

    The SOURCES property is inherently non-INTERFACE; even setting it as INTERFACE fails because CMake rejects it for INTERFACE libraries.

  2. Changing library type to STATIC and linking sources 70% 失败

    This changes the library's purpose and may break header-only design, causing unnecessary compilation and link errors.

  3. Ignoring the error and using add_library with sources anyway 100% 失败

    CMake will abort the configuration; the build cannot proceed without fixing the target definition.