cmake build_error ai_generated true

CMake Error: Policy CMP0068 is not set: RPATH settings on macOS do not affect install_name.

ID: cmake/policy-cmp0068-not-set

Also available as: JSON · Markdown · 中文
85%Fix Rate
85%Confidence
1Evidence
2023-03-15First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
CMake 3.9+ active — — —
macOS 10.12+ active — — —
Xcode 9+ active — — —

Root Cause

CMake policy CMP0068 is not set. On macOS, the build system may generate incorrect install_name for shared libraries, leading to runtime linking issues.

generic

中文

未设置 CMake 策略 CMP0068。在 macOS 上，构建系统可能为共享库生成错误的 install_name，导致运行时链接问题。

Official Documentation

https://cmake.org/cmake/help/latest/policy/CMP0068.html

Workarounds

  1. 85% success Add `cmake_policy(SET CMP0068 NEW)` before any target creation in CMakeLists.txt to adopt new behavior. 
    Add `cmake_policy(SET CMP0068 NEW)` before any target creation in CMakeLists.txt to adopt new behavior.
  2. 80% success Alternatively, set policy to OLD: `cmake_policy(SET CMP0068 OLD)` to use legacy behavior if needed. 
    Alternatively, set policy to OLD: `cmake_policy(SET CMP0068 OLD)` to use legacy behavior if needed.

中文步骤

  1. 在任何目标创建之前，在 CMakeLists.txt 中添加 `cmake_policy(SET CMP0068 NEW)` 以采用新行为。
  2. 或者，如果旧行为更合适，设置策略为 OLD：`cmake_policy(SET CMP0068 OLD)`。

Dead Ends

Common approaches that don't work:

  1. 70% fail

    This may break relocation or cause install_name to be hardcoded, not solving the policy mismatch.

  2. 90% fail

    The error may cause runtime library loading failures on macOS; ignoring it does not fix the root cause.