在 CMakeLists 文件中指定 Crypto++ 库

Question

我试图在我的 CMakeLists 文件中指定 Crypto++ 库，但我总是遇到错误。

这是我的 CMakeLists 文件：

cmake_minimum_required(VERSION 2.8)
project( Recognition )
find_package( OpenCV REQUIRED )
find_package ( CURL REQUIRED )
find_package ( CRYPTOPP REQUIRED )
add_executable( Recognition Recognition.cpp )
target_link_libraries( Recognition ${OpenCV_LIBS} ${CURL_LIBRARY} ${CRYPTOPP_LIBRARY})

这是我得到的错误：

 By not providing "FindCRYPTOPP.cmake" in CMAKE_MODULE_PATH this project has
 asked CMake to find a package configuration file provided by "CRYPTOPP",
 but CMake did not find one.

 Could not find a package configuration file provided by "CRYPTOPP" with any
 of the following names:

 CRYPTOPPConfig.cmake
 cryptopp-config.cmake

 Add the installation prefix of "CRYPTOPP" to CMAKE_PREFIX_PATH or set
 "CRYPTOPP_DIR" to a directory containing one of the above files.  If
 "CRYPTOPP" provides a separate development package or SDK, be sure it has
 been installed.

 -- Configuring incomplete, errors occurred!

感谢您的帮助！

Answer 1

CMake 在包中没有用于 Crypto++ 库的模块，因此您必须提供自己的模块。您可以尝试 following（我用过一次）或 google 作为 "Find CryptoPP cmake"。

完成文件后，将其放在某处并指向 CMake 以在该位置搜索文件。假设你把它放在你的 sources 目录下的 contrib/cmake 子文件夹中，那么 CMake 代码将是：

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/contrib/cmake")

因此您设置了模块搜索的路径，现在您需要使用 find_package，但是请注意，您应该以与 .cmake 文件命名相同的方式提供包名称。例如，如果您有 CryptoPP.cmake，那么您应该输入以下内容：

find_package ( CryptoPP REQUIRED )

在 CMakeLists 文件中指定 Crypto++ 库

Specify Crypto++ library in a CMakeLists file

c++

makefile

cmake

crypto++