cmake install_error ai_generated true

CMake Error: install(EXPORT "MyTargets") includes target "mylib" which is not in the export set.

ID: cmake/export-import-target-not-found

Also available as: JSON · Markdown · 中文
92%Fix Rate
86%Confidence
1Evidence
2023-12-12First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
CMake 3.10 active — — —
CMake 3.15 active — — —
CMake 3.22 active — — —

Root Cause

An install(EXPORT) command references a target that was not previously registered with install(TARGETS) and the same EXPORT name.

generic

中文

install(EXPORT) 命令引用的目标之前没有使用相同的 EXPORT 名称通过 install(TARGETS) 注册。

Official Documentation

https://cmake.org/cmake/help/latest/command/install.html#export

Workarounds

  1. 95% success Ensure the target is installed with the same EXPORT name: install(TARGETS mylib EXPORT MyTargets DESTINATION lib). Then install(EXPORT MyTargets DESTINATION lib/cmake). Example: install(TARGETS mylib EXPORT MyTargets DESTINATION lib) and install(EXPORT MyTargets DESTINATION lib/cmake/MyProject). 
    Ensure the target is installed with the same EXPORT name: install(TARGETS mylib EXPORT MyTargets DESTINATION lib). Then install(EXPORT MyTargets DESTINATION lib/cmake). Example: install(TARGETS mylib EXPORT MyTargets DESTINATION lib) and install(EXPORT MyTargets DESTINATION lib/cmake/MyProject).
  2. 85% success If the target should not be exported, remove it from the install(EXPORT) call or create a separate export set for it. 
    If the target should not be exported, remove it from the install(EXPORT) call or create a separate export set for it.

中文步骤

  1. 确保目标使用相同的 EXPORT 名称安装：install(TARGETS mylib EXPORT MyTargets DESTINATION lib)。然后 install(EXPORT MyTargets DESTINATION lib/cmake)。示例：install(TARGETS mylib EXPORT MyTargets DESTINATION lib) 和 install(EXPORT MyTargets DESTINATION lib/cmake/MyProject)。
  2. 如果目标不应被导出，将其从 install(EXPORT) 调用中移除，或为其创建单独的导出集。

Dead Ends

Common approaches that don't work:

  1. 90% fail

    CMake uses the EXPORT name to group targets; mismatched names cause the target to be omitted from the set.

  2. 95% fail

    Without the export, other projects cannot use find_package to locate the installed targets.