cmake错误与find_package无法正确比较版本
您好，我正在尝试获得一个使用CMAKE运行的C ++项目，但是当构建时，我总是在此行上遇到错误：
find_package(jsoncpp REQUIRED)
错误是：
[cmake] CMake Error at src/scouting/CMakeLists.txt:12 (find_package):
[cmake] Could not find a configuration file for package "jsoncpp" that is
[cmake] compatible with requested version "".
[cmake]
[cmake] The following configuration files were considered but not accepted:
[cmake]
[cmake] /home/moritz/Schreibtisch/DA/airclipObstacleDetection/lib/jsoncpp/build/jsoncppConfig.cmake, version: 1.9.2 (64bit)
我意识到它说请求版本“”，所以我将行更改为：
find_package(jsoncpp 1.9.2 REQUIRED)
现在错误是：
[cmake] CMake Error at src/scouting/CMakeLists.txt:12 (find_package):
[cmake] Could not find a configuration file for package "jsoncpp" that is
[cmake] compatible with requested version "1.9.2".
[cmake]
[cmake] The following configuration files were considered but not accepted:
[cmake]
[cmake] /home/moritz/Schreibtisch/DA/airclipObstacleDetection/lib/jsoncpp/build/jsoncppConfig.cmake, version: 1.9.2 (64bit)
1.9.2与1.9.2完全不兼容？我猜“（64位）”是关键吗？但是我无法将其添加到find_package中，对吗？
Hello I'm trying to get a C++ project to run with cmake but when building I always get an error on this line:
find_package(jsoncpp REQUIRED)
the error being:
[cmake] CMake Error at src/scouting/CMakeLists.txt:12 (find_package):
[cmake] Could not find a configuration file for package "jsoncpp" that is
[cmake] compatible with requested version "".
[cmake]
[cmake] The following configuration files were considered but not accepted:
[cmake]
[cmake] /home/moritz/Schreibtisch/DA/airclipObstacleDetection/lib/jsoncpp/build/jsoncppConfig.cmake, version: 1.9.2 (64bit)
I realized it says requested version "" so I changed the line to:
find_package(jsoncpp 1.9.2 REQUIRED)
now the error is:
[cmake] CMake Error at src/scouting/CMakeLists.txt:12 (find_package):
[cmake] Could not find a configuration file for package "jsoncpp" that is
[cmake] compatible with requested version "1.9.2".
[cmake]
[cmake] The following configuration files were considered but not accepted:
[cmake]
[cmake] /home/moritz/Schreibtisch/DA/airclipObstacleDetection/lib/jsoncpp/build/jsoncppConfig.cmake, version: 1.9.2 (64bit)
How is 1.9.2 not compatible with exactly 1.9.2? I guess the "(64bit)" is the key? but I can't add that into find_package, right?
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错误消息的关键部分是
它告诉特定的配置文件描述 64bit 安装，但是您的cmake项目正在为 32bit 配置。
您需要选择项目的目标平台的另一个位置（例如，Visual Studio Generators允许：
The key part of the error message is
It tells that the specific configuration file describes 64bit installation, but your CMake project is being configured for 32bit.
You need either to choose another bitness of the target platform for your project (e.g. Visual Studio generators allow that: https://cmake.org/cmake/help/latest/generator/Visual%20Studio%2017%202022.html) or to use other installation of 3d-party package.