MSVC 2017 缺少 libboost_filesystem-vc141-mt-gd-x32-1_66.lib 错误

Question

我正在尝试在 Windows 上创建一个动态库，但我遇到了 Boost 问题，我不断收到此错误

1>LINK : fatal error LNK1104: cannot open file 'libboost_filesystem-vc141-mt-gd-x32-1_66.lib'

问题是，根据http://www.boost.org/doc/libs/1_66_0/more/getting_started/windows.html#header-only-libraries，这两个库应该是仅标头，仅标头

我正在使用的cmake

cmake_minimum_required(VERSION 3.8)

project(mod_autoindex)

set(CMAKE_CXX_STANDARD 17)

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR})
SET( CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG "${OUTPUT_DIRECTORY}")
SET( CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE "${OUTPUT_DIRECTORY}")

SET (BOOST_ROOT "C:/Program Files (x86)/boost/boost_1_66_0")
SET (BOOST_INCLUDEDIR "${BOOST_ROOT}/boost")

if (UNIX)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -W -Wall -Wextra")
    set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
else()
    set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
endif()

include_directories(${Boost_INCLUDE_DIR})
include_directories("../../include")
include_directories("../../include/sza")
include_directories("./include")


file(GLOB_RECURSE CPP_SRCS ${CMAKE_SOURCE_DIR}/src/*.cpp)
file(GLOB_RECURSE HEADERS ${CMAKE_SOURCE_DIR}/include/*.hpp)

set(SOURCE_FILES ${CPP_SRCS} ${HEADERS})
add_library(${PROJECT_NAME} SHARED ${SOURCE_FILES})
target_link_libraries(${PROJECT_NAME})

知道我做错了吗？

cmake . -G "Visual Studio 15 2017 Win64" 的 cmake 输出

-- The C compiler identification is MSVC 19.11.25547.0
-- The CXX compiler identification is MSVC 19.11.25547.0
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.11.25503/bin/Hostx86/x64/cl.exe
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.11.25503/bin/Hostx86/x64/cl.exe -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.11.25503/bin/Hostx86/x64/cl.exe
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.11.25503/bin/Hostx86/x64/cl.exe -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Boost version: 1.65.1
-- Found the following Boost libraries:
--   filesystem
--   system
-- Configuring done
-- Generating done
-- Build files have been written to: C:/Users/theo/Desktop/cpp_zia/modules/mod_autoindex

所以解决方案生成似乎工作正常，但在那之后，当我尝试构建 MSBuild mod_autoindex.sln 时，我收到以下错误

LINK : fatal error LNK1104: cannot open file 'libboost_filesystem-vc141-mt-gd-1_65_1.lib' [C:\Users\theo\
Desktop\cpp_zia\modules\mod_autoindex\mod_autoindex.vcxproj]

@update 这里是我当前的 cmake

cmake_minimum_required(VERSION 3.8)

project(mod_autoindex)

set(CMAKE_CXX_STANDARD 17)

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR})
SET( CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG "${OUTPUT_DIRECTORY}")
SET( CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE "${OUTPUT_DIRECTORY}")

set(BOOST_ROOT "C:/Program Files (x86)/boost/boost_1_65_1")
set(Boost_ADDITIONAL_VERSIONS 1.65.1)

set(BOOST_USE_STATIC_LIBS ON)
set(Boost_USE_MULTITHREADED ON)
find_package(Boost COMPONENTS filesystem REQUIRED)

if (UNIX)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -W -Wall -Wextra")
    set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
else()
    set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
endif()

include_directories(${Boost_INCLUDE_DIR})
include_directories("../../include")
include_directories("../../include/sza")
include_directories("./include")


file(GLOB_RECURSE CPP_SRCS ${CMAKE_SOURCE_DIR}/src/*.cpp)
file(GLOB_RECURSE HEADERS ${CMAKE_SOURCE_DIR}/include/*.hpp)
MESSAGE( STATUS "BOOST libraries: " ${Boost_LIBRARIES} )

add_library(${PROJECT_NAME} SHARED ${CPP_SRCS} ${HEADERS})
target_link_libraries(${PROJECT_NAME} ${Boost_LIBRARIES})

Answer 1

许多Boost 库确实只是标题，但filesystem 不是。

我将使用CMake 的方式通过适当的 find_package 模块添加库依赖项，而不是手动执行操作：

set(BOOST_ROOT "C:/Program Files (x86)/boost/boost_1_65_1")
set(Boost_USE_STATIC_LIBS ON)
set(Boost_USE_MULTITHREADED ON)
find_package(Boost COMPONENTS filesystem REQUIRED)
include_directories(${Boost_INCLUDE_DIRS})
...
target_link_libraries(${PROJECT_NAME} ${Boost_LIBRARIES})

Boost 编译器的二进制文件可以在https://sourceforge.net/projects/boost/files/boost-binaries/ 下载

如果CMake 没有找到您的Boost 安装（CMake 3.10.2 版本 FindBoost.cmake 模块确实知道高达Boost 1.65.1 的版本），您可以尝试在find_package 调用之前添加

set(Boost_ADDITIONAL_VERSIONS 1.66.0) 

但是

Boost 从版本1.66.0 开始更改了其命名方案。 CMake 直到版本 3.10.2 不知道这个方案，因此无法处理它。您需要改用Boost 1.65.1。

根据@ComicSansMS 的评论编辑：

不要将Boost 路径硬编码到CMakeLists.txt，而是根据环境变量BOOST_ROOT 设置它，或者将其作为参数提供给CMake 调用。

所以转到你的项目路径（你的CMakeLists.txt 存储的路径）

mkdir build
cd build

要么做

set BOOST_ROOT=C:\Program Files (x86)\boost\boost_1_65_1
cmake .. -G "Visual Studio 15 2017"  

或致电

cmake .. -G "Visual Studio 15 2017" -DBOOST_ROOT="C:\Program Files (x86)\boost\boost_1_65_1"

以后你可以使用CMake的构建模式来构建你的整个项目

cmake --build . --target ALL_BUILD --config Release -- /nologo /verbosity:minimal /maxcpucount