cmake找不到使用vcpkg安装的库

时间:2019-04-03 13:39:22

标签: c++ boost cmake xerces vcpkg

我想在Windows的CMake项目中使用vcpkg,因为我需要同时由此程序包管理器处理的boostxerces

我有以下CMakeLists.txt

cmake_minimum_required (VERSION 3.12.0)

project (myproj)

set (CMAKE_PREFIX_PATH ${XERCES_ROOT})
set (Boost_USE_STATIC_LIBS ON)
set (Boost_USE_MULTITHREADED ON)
unset (Boost_INCLUDE_DIR CACHE)
unset (Boost_LIBRARY_DIRS CACHE)

# set (CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../../cmake/modules)
find_package (Boost COMPONENTS filesystem regex REQUIRED)
find_package (XercesC CONFIG REQUIRED)

set (CMAKE_INCLUDE_CURRENT_DIR ON)
message (STATUS "binary dir is ${CMAKE_BINARY_DIR}")
include_directories (${CMAKE_BINARY_DIR}/${PROJECT_NAME}/)
include_directories (${CMAKE_CURRENT_SOURCE_DIR}/..)
include_directories (${Boost_INCLUDE_DIRS})
include_directories (${XercesC_INCLUDE_DIRS})

set (PROJECT_SRC
  code.cpp
  )

add_library (${PROJECT_NAME} SHARED ${PROJECT_SRC})
add_dependencies (${PROJECT_NAME} UPDATE_RESOURCES)
target_link_libraries (${PROJECT_NAME} ${Boost_LIBRARIES} XercesC::XercesC)

Boostxerces-cvcpkg一起安装。由于我使用的是Visual Studio Code,因此我在vcpkg中设置了settings.json变量:

  "cmake.configureSettings": {
    "CMAKE_TOOLCHAIN_FILE" : "some/path/vcpkg/scripts/buildsystems/vcpkg.cmake",
    "VCPKG_TARGET_TRIPLET": "x64-windows"
  }

当我运行CMake时,出现以下错误:

[cmake] CMake Error at C:/Program Files/CMake/share/cmake-3.14/Modules/FindBoost.cmake:2132 (message):
[cmake]   Unable to find the requested Boost libraries.
[cmake] 
[cmake]   Unable to find the Boost header files.  Please set BOOST_ROOT to the root
[cmake]   directory containing Boost or BOOST_INCLUDEDIR to the directory containing
[cmake]   Boost's headers.
[cmake] Call Stack (most recent call first):
[cmake]   D:/projects/vcpkg/scripts/buildsystems/vcpkg.cmake:233 (_find_package)
[cmake]   src/myroject/CMakeLists.txt:24 (find_package)
[cmake] 
[cmake] 
[cmake] CMake Error at D:/Projects/vcpkg/installed/x64-windows/share/xercesc/vcpkg-cmake-wrapper.cmake:1 (_find_package):
[cmake]   Could not find a package configuration file provided by "XercesC" with any
[cmake]   of the following names:
[cmake] 
[cmake]     XercesCConfig.cmake
[cmake]     xercesc-config.cmake
[cmake] 
[cmake]   Add the installation prefix of "XercesC" to CMAKE_PREFIX_PATH or set
[cmake]   "XercesC_DIR" to a directory containing one of the above files.  If
[cmake]   "XercesC" provides a separate development package or SDK, be sure it has
[cmake]   been installed.
[cmake] Call Stack (most recent call first):
[cmake]   D:/Projects/vcpkg/scripts/buildsystems/vcpkg.cmake:189 (include)
[cmake]   src/ZLA/CMakeLists.txt:25 (find_package)
[cmake] 
[cmake] 
[cmake] Configuring incomplete, errors occurred!
[cmake] See also "D:/Projects/zla/build/vscode/CMakeFiles/CMakeOutput.log".
[cms-driver] Error during CMake configure: [cmake-server] Configuration failed.

目前,我已经使用vcpkg命令安装了xerces,虽然目前尚未安装boost,但是我期望在执行cmake命令期间,vcpkg将下载并构建所需的build包。

我也尝试了命令行:

 cmake -DCMAKE_TOOLCHAIN_FILE=D:/Projects/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows ../

但结果是相同的。

我做错了什么?如何成功使用vcpkg?

4 个答案:

答案 0 :(得分:1)

  

boost目前尚未安装,但是我期望在执行cmake命令期间,vcpkg将下载并构建所需的构建软件包。

据我所知并非如此。您需要使用values_list预先安装想要使用的三元组软件包(即vcpkg)。然后,您需要确保在运行CMake时使用了正确的三元组(请检查x64-windows中的VCPKG_TARGET_TRIPLET变量)。如果不正确,则可以更改它并使用CMake重新配置。

另外,根据收到的错误输出,似乎CMakeCache.txt也没有使用xerces正确安装。您可以通过运行以下命令检查vcpkg安装了什么:

vcpkg

答案 1 :(得分:1)

我遇到了同样的问题,只是用以下方法解决了它:

set(CURL_DIR "C:/Libs/vcpkg/installed/x64-windows/share/curl")

list(APPEND CMAKE_PREFIX_PATH "C:/Libs/vcpkg/packages/curl_x64-windows/share/curl/")

我在 C:/ Libs

下安装了vcpkg

答案 2 :(得分:1)

  1. 您需要预先安装软件包(使用vcpkg install)。

(然后,您可以将工具链指定为CMake选项:

-DCMAKE_TOOLCHAIN_FILE=C:\path\to\vcpkg\scripts\buildsystems\vcpkg.cmake

,但是如果您已经指定了工具链(例如在交叉编译时),则此方法将无效。

    为避免出现此问题,请
  1. “包括”它:

将此行添加到find_package()之前的项目CMakeLists.txt中:

include(/path/to/vcpkg/scripts/buildsystems/vcpkg.cmake)

答案 3 :(得分:0)

理论上它很简单(假设 vcpkg 安装在 C:/vcpkg 中,因为它用于 github 操作);

  1. 使用 vcpkg install foo 安装“foo”包
  2. 确保您的 CMakeLists.txt 找到并使用该包;
    find_package(FOO)
    # Use these instead of the package doesn't have proper cmake package support.
    # find_path(FOO_INCLUDE_DIRS foo.h)
    # find_library(FOO_LIBRARYS foo)
    include_directories(${FOO_INCLUDE_DIRS})
    target_link_libraries(myprogram ${FOO_LIBRARIES})                                     
    
  3. 使用 -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake 运行 cmake

但是...直到我将 --triple x64-windows 添加到 vcpkg install 命令之前,这对我不起作用。

DCMAKE_TOOLCHAIN_FILE 设置各种 CMAKE_(SYSTEM_)?(PREFIX|LIBRARY|INCLUDE|FRAMEWORK)_PATH 变量以启用 find_*() cmake 函数,但请注意这些路径包括 VCPKG_TARGET_TRIPLET。在我的情况下,使用 vcpkg install <foo> 安装的软件包默认为 x86-windows,但随后使用默认为 -DCMAKE_TOOLCHAIN_FILE=C:/....x64-windows 调用 cmake,因此无法找到该软件包。

当前 vcpkg 默认为较旧的 x86 目标,但现代 Visual Studio(由 gitup 操作使用)默认为 x64。修复方法是使用 vcpkg -triple=x64-windows install <foo> 安装软件包。我花了很长时间走下太多红鲱鱼兔子洞才发现这一点。