找不到以下 Boost 库： boost_system

Question

我想构建这个存储库：https://github.com/reo7sp/tgbot-cpp。

它是一个用于管理 Telegram 机器人的 API。所需的依赖项是 openssl、zlib、boost。卷曲是可选的。

我是如何安装库和 cmake 的

Boost 编译时使用：

bootstrap.bat
.\b2

and（因为我不知道区别；一个在 boost/stage/lib 下编译；第二个在 boost/lib 下）

bjam install --prefix=D:/Programme/Boost/boost_1_69_0 --with-system --with-date_time --with-random link=static runtime-link=shared threading=multi

我在path下的系统变量中添加了所需的路径。

environment variables

Path

尝试使用 cmake 构建时出现以下错误：

The C compiler identification is MSVC 19.16.27026.1
The CXX compiler identification is MSVC 19.16.27026.1
Check for working C compiler: D:/Programme (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x64/cl.exe
Check for working C compiler: D:/Programme (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x64/cl.exe -- works
Detecting C compiler ABI info
Detecting C compiler ABI info - done
Detecting C compile features
Detecting C compile features - done
Check for working CXX compiler: D:/Programme (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx86/x64/cl.exe
Check for working CXX compiler: D:/Programme (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/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
Looking for pthread.h
Looking for pthread.h - not found
Found Threads: TRUE  
Found ZLIB: D:/Programme (x86)/GnuWin32/lib/zlib.lib (found version "1.2.3") 
Found OpenSSL: optimized;D:/Programme/OpenSSL-Win64/lib/VC/libcrypto64MD.lib;debug;D:/Programme/OpenSSL-Win64/lib/VC/libcrypto64MDd.lib (found version "1.1.0j")  
Could NOT find CURL (missing: CURL_LIBRARY) (found version "7.63.0")
CMake Warning (dev) at CMakeLists.txt:62 (find_package):
  Policy CMP0074 is not set: find_package uses <PackageName>_ROOT variables.
  Run "cmake --help-policy CMP0074" for policy details.  Use the cmake_policy
  command to set the policy and suppress this warning.

  Environment variable Boost_ROOT is set to:

    D:\Programme\Boost\boost_1_69_0

  For compatibility, CMake is ignoring the variable.
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Error at D:/Programme/CMake/share/cmake-3.13/Modules/FindBoost.cmake:2100 (message):
  Unable to find the requested Boost libraries.

  Boost version: 1.69.0

  Boost include path: D:/Programme/Boost/boost_1_69_0/include/boost-1_69

  Could not find the following Boost libraries:

          boost_system

  No Boost libraries were found.  You may need to set BOOST_LIBRARYDIR to the
  directory containing Boost libraries or BOOST_ROOT to the location of
  Boost.
Call Stack (most recent call first):
  CMakeLists.txt:62 (find_package)


CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
CURL_LIBRARY
    linked by target "TgBot" in directory G:/Programmieren (C++)/Bibliotheken/tgbot-cpp-master

Configuring incomplete, errors occurred!
See also "G:/Programmieren (C++)/Bibliotheken/tgbot-cpp-master/BUILD/CMakeFiles/CMakeOutput.log".
See also "G:/Programmieren (C++)/Bibliotheken/tgbot-cpp-master/BUILD/CMakeFiles/CMakeError.log".

在我看来，除了 Boost 之外的一切都有效。我知道有几个用户遇到了这个问题，例如：

Cmake doesn't find Boost

CMake with Boost could not find static libraries

CMake with Boost library Windows 10 Library not found correctly

所以，我做了建议的程序：

SET(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} "D:/Programme/Boost/boost_1_69_0")
SET(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} "D:/Programme/Boost/boost_1_69_0/lib")

FIND_PACKAGE(Boost)
IF (Boost_FOUND)
    INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIR})
    ADD_DEFINITIONS( "-DHAS_BOOST" )
ENDIF()

和

set(BOOST_LIBRARYDIR D:/Programme/Boost/boost_1_69_0/lib)

没有任何效果。我完全不知道该怎么做，几天来拼命想弄清楚该怎么做而没有成功。请帮帮我。

Answer 1

使用相同的命令构建和安装 Boost。

bjam install --prefix=D:/Programme/Boost/boost_1_69_0 --with-system --with-date_time --with-random link=static runtime-link=shared threading=multi

在 windows 中，Boost 在 include 下创建另一个子目录。应该是这样的。

D:/Programme/Boost/boost_1_69_0/include/boost-1_69

将D:/Programme/Boost/boost_1_69_0/include/boost-1_69中的所有文件移动到D:/Programme/Boost/boost_1_69_0/include/

（将内容上移一个目录）

现在将 CMake 项目中的 BOOST_ROOT 设置为 D:/Programme/Boost/boost_1_69_0。

它现在应该可以工作了。

Answer 2

根据您的 cmets，Boost 的位置是 D:/Programme/Boost/boost_1_69_0/stage/lib，但您将其设置为 D:/Programme/Boost/boost_1_69_0/lib。

无论如何，如果您将BOOST_ROOT 设置为D:/Programme/Boost/boost_1_69_0 和FIND_PACKAGE(Boost)（通常是手动，在CMake UI 中而不是在CMakeLists.txt 文件中），则可以找到Boost。

这将依次设置您需要使用的所有Boost_* 变量。