cmake config_error ai_generated true

CMake Error: Could not find a configuration file for package "MyPackage" that requests exact version 2.0.0. Found version 2.1.0, but exact match required.

ID: cmake/find-package-version-exact-mismatch

Also available as: JSON · Markdown · 中文
85%Fix Rate
87%Confidence
1Evidence
2023-09-15First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.18 active — — —
3.22 active — — —
3.25 active — — —
3.28 active — — —

Root Cause

find_package is called with EXACT version requirement, but the installed package has a different version (even if minor/patch differ).

generic

中文

find_package 使用了 EXACT 版本要求，但已安装的包具有不同的版本（即使只有次要/补丁版本不同）。

Official Documentation

https://cmake.org/cmake/help/latest/command/find_package.html#version-selection

Workarounds

  1. 90% success Update the find_package call to accept the installed version: find_package(MyPackage 2.1.0 EXACT) or remove EXACT if not strictly required. 
    Update the find_package call to accept the installed version: find_package(MyPackage 2.1.0 EXACT) or remove EXACT if not strictly required.
  2. 85% success Install the exact required version of the package: on Ubuntu, use apt-get install mypackage=2.0.0 or build from source with the correct tag. 
    Install the exact required version of the package: on Ubuntu, use apt-get install mypackage=2.0.0 or build from source with the correct tag.
  3. 75% success Use a version range if allowed: find_package(MyPackage 2.0.0...2.1.0 EXACT) is not valid; instead use find_package(MyPackage 2.0.0) without EXACT and add a custom version check. 
    Use a version range if allowed: find_package(MyPackage 2.0.0...2.1.0 EXACT) is not valid; instead use find_package(MyPackage 2.0.0) without EXACT and add a custom version check.

中文步骤

  1. 更新 find_package 调用以接受已安装的版本：find_package(MyPackage 2.1.0 EXACT) 或如果不是严格必要，则移除 EXACT。
  2. 安装所需的精确版本包：在 Ubuntu 上，使用 apt-get install mypackage=2.0.0 或从源码构建正确的标签版本。
  3. 如果允许，使用版本范围：find_package(MyPackage 2.0.0...2.1.0 EXACT) 无效；改为使用不带 EXACT 的 find_package(MyPackage 2.0.0) 并添加自定义版本检查。

Dead Ends

Common approaches that don't work:

  1. Manually editing the package's version file to change the version number 90% fail

    Editing the installed package file is a hack that may break other projects depending on the correct version. It is also overwritten on package updates.

  2. Using find_package without EXACT but then adding a version check via if() 70% fail

    The project may require EXACT for a reason (e.g., ABI compatibility). Removing EXACT can lead to subtle runtime failures.

  3. Installing an older version of the package manually from source 85% fail

    This can cause conflicts with other system packages that depend on the newer version, leading to dependency hell.