Question

我目前正在尝试在Windows（使用英特尔编译器）上构建一个在UNIX上使用CMake编译得非常好的大项目。这是我的问题的简单示例。

使用Boost.Python运行以下简单的代码示例：

#include <iostream>
#include <Python.h>
#include <boost/python.hpp>

int main()
{
    std::string python_home = "C:\\softs\\python\\2.7.9\\64";
    char* python_home_char = new char[python_home.length() + 1];
    strcpy(python_home_char, python_home.c_str());
    Py_SetPythonHome(python_home_char);
    Py_Initialize();

    boost::python::object pyobj_main = boost::python::import("__main__");
    boost::python::object glob = pyobj_main.attr("__dict__");
    boost::python::exec("print \"Hello from Python\"", glob, glob);

    Py_Finalize();

    return 0;
}

执行代码时出现以下错误消息：

程序无法启动，因为您的计算机缺少boost_python-iw-mt-1_57.dll。尝试重新安装该程序以解决此问题。

请注意，如果删除代码末尾的3行boost::python::***，则不会出现错误。另外，如果我使用Boost.Thread编译以下示例，我不会有任何错误（在我看来，它也使用库（不是标题），是不是？）：

#include <iostream>
#include <boost/thread.hpp>

boost::mutex mutex_hello;
void hello(unsigned long int thread_number)
{
    boost::mutex::scoped_lock lock_hello(mutex_hello);
    std::cout << "Hello from thread " << thread_number << std::endl;
}

int main()
{
    boost::thread_group group;
    for(unsigned long int i = 0; i < 9; ++i)
        group.create_thread(boost::bind(hello, i + 1));
    group.join_all();

    return 0;
}

实际上，我不想使用共享库，我希望我的可执行文件更加静态。

我使用以下CMake文件构建此代码：

cmake_minimum_required(VERSION 2.8.9)

# Project
project(TestBoost)
enable_language(C)
enable_language(CXX)
enable_language(Fortran)

# Compiler info
if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
    set(CompilerName "${CMAKE_CXX_COMPILER_ID}")
    set(CompilerVersion "${CMAKE_CXX_COMPILER_VERSION}")
    if(CMAKE_CL_64)
        set(CompilerArch "64")
    else()
        set(CompilerArch "32")
    endif()
endif()
string(TOLOWER "${CompilerName}" CompilerName)
if("${CompilerVersion}" MATCHES "([0-9]+\\.[0-9]+\\.[0-9]+)\\..*")
    string(REGEX REPLACE "([0-9]+\\.[0-9]+\\.[0-9]+)\\..*" "\\1" CompilerVersion "${CompilerVersion}")
endif()

# Libs
set(CMAKE_FIND_LIBRARY_SUFFIXES .lib .a ${CMAKE_FIND_LIBRARY_SUFFIXES})

# Intel
if(CompilerName STREQUAL "intel")
    string(REGEX REPLACE "(.*)/bin/.*" "\\1" IntelPath "${CMAKE_C_COMPILER}")
    if(CompilerArch STREQUAL "32")
        set(IntelArchStr "ia32")
    elseif(CompilerArch STREQUAL "64")
        set(IntelArchStr "intel64")
    endif()
    set(Compiler_LIBRARY_DIRS "${IntelPath}/compiler/lib/${IntelArchStr}")
endif()

# Boost
set(BOOST_ROOT "C:/softs/boost/1.57.0/${CompilerArch}/${CompilerName}/${CompilerVersion}")
set(Boost_USE_MULTITHREAD ON)
set(Boost_USE_STATIC_LIBS ON)
set(Boost_NO_SYSTEM_PATHS ON)
set(Boost_ADDITIONAL_VERSIONS "1.57.0" "1.57")
find_package(Boost 1.57.0 REQUIRED COMPONENTS thread system filesystem python)

# Python
set(PythonPath C:/softs/python/2.7.9/${CompilerArch})
set(Python_INCLUDE_DIRS ${PythonPath}/include)
set(Python_LIBRARY_DIRS ${PythonPath}/libs)
set(Python_LIBRARIES python27)

# Executable
include_directories(SYSTEM ${Boost_INCLUDE_DIRS} ${Python_INCLUDE_DIRS})
link_directories(${Boost_LIBRARY_DIRS} ${Python_LIBRARY_DIRS} ${Compiler_LIBRARY_DIRS})
add_executable(test_boost test_boost.cpp)
target_link_libraries(test_boost ${Boost_LIBRARIES} ${Python_LIBRARIES})

我运行此CMake脚本，初始条目CMAKE_GENERATOR_TOOLSET设置为Intel C++ Compiler XE 14.0，并将英特尔编译器指定为本机编译器。我在运行CMake时没有错误或警告（参见下面的日志）。这会生成一个文件TestBoost.sln。在Visual Studio Professional 2013中加载时，我将编译类型更改为Release并修改目标test_boost的链接器选项以添加/NODEFAULTLIB:LIBCMT（由于CMake中的错误而导致解决方法）。然后我编译没有任何错误。

从CMake登录：

The C compiler identification is Intel 14.0.4.20140805
The CXX compiler identification is Intel 14.0.4.20140805
Check for working C compiler using: Visual Studio 12 2013 Win64
Check for working C compiler using: Visual Studio 12 2013 Win64 -- works
Detecting C compiler ABI info
Detecting C compiler ABI info - done
Check for working CXX compiler using: Visual Studio 12 2013 Win64
Check for working CXX compiler using: Visual Studio 12 2013 Win64 -- works
Detecting CXX compiler ABI info
Detecting CXX compiler ABI info - done
The Fortran compiler identification is Intel
Check for working Fortran compiler using: Visual Studio 12 2013 Win64
Check for working Fortran compiler using: Visual Studio 12 2013 Win64  -- works
Detecting Fortran compiler ABI info
Detecting Fortran compiler ABI info - done
Determine Intel Fortran Compiler Implicit Link Path
Determine Intel Fortran Compiler Implicit Link Path -- done
Checking whether C:/Program Files (x86)/Intel/Composer XE 2013 SP1/bin/intel64/icl.exe supports Fortran 90
Checking whether C:/Program Files (x86)/Intel/Composer XE 2013 SP1/bin/intel64/icl.exe supports Fortran 90 -- yes
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:515 ] _boost_TEST_VERSIONS = 1.57.0;1.57
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:517 ] Boost_USE_MULTITHREADED = TRUE
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:519 ] Boost_USE_STATIC_LIBS = ON
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:521 ] Boost_USE_STATIC_RUNTIME = 
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:523 ] Boost_ADDITIONAL_VERSIONS = 1.57.0;1.57
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:525 ] Boost_NO_SYSTEM_PATHS = ON
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:577 ] Declared as CMake or Environmental Variables:
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:579 ]   BOOST_ROOT = C:/softs/boost/1.57.0/64/intel/14.0.4
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:581 ]   BOOST_INCLUDEDIR = 
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:583 ]   BOOST_LIBRARYDIR = 
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:585 ] _boost_TEST_VERSIONS = 1.57.0;1.57
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:654 ] Include debugging info:
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:656 ]   _boost_INCLUDE_SEARCH_DIRS = C:/softs/boost/1.57.0/64/intel/14.0.4/include;C:/softs/boost/1.57.0/64/intel/14.0.4;NO_CMAKE_SYSTEM_PATH
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:658 ]   _boost_PATH_SUFFIXES = boost-1_57_0;boost_1_57_0;boost/boost-1_57_0;boost/boost_1_57_0;boost-1_57;boost_1_57;boost/boost-1_57;boost/boost_1_57
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:678 ] location of version.hpp: C:/softs/boost/1.57.0/64/intel/14.0.4/include/boost-1_57/boost/version.hpp
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:702 ] version.hpp reveals boost 1.57.0
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:787 ] guessed _boost_COMPILER = -iw
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:797 ] _boost_MULTITHREADED = -mt
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:840 ] _boost_RELEASE_ABI_TAG = -
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:842 ] _boost_DEBUG_ABI_TAG = -gd
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:890 ] _boost_LIBRARY_SEARCH_DIRS = C:/softs/boost/1.57.0/64/intel/14.0.4/lib;C:/softs/boost/1.57.0/64/intel/14.0.4/stage/lib;C:/softs/boost/1.57.0/64/intel/14.0.4/include/boost-1_57/lib;C:/softs/boost/1.57.0/64/intel/14.0.4/include/boost-1_57/../lib;C:/softs/boost/1.57.0/64/intel/14.0.4/include/boost-1_57/stage/lib;NO_CMAKE_SYSTEM_PATH
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:1001 ] Searching for THREAD_LIBRARY_RELEASE: libboost_thread-iw-mt-1_57;libboost_thread-iw-mt;libboost_thread-mt-1_57;libboost_thread-mt;libboost_thread;libboost_thread-iw-mt-s-1_57;libboost_thread-iw-mt-s;libboost_thread-mt-s-1_57;libboost_thread-mt-s
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:1037 ] Searching for THREAD_LIBRARY_DEBUG: libboost_thread-iw-mt-gd-1_57;libboost_thread-iw-mt-gd;libboost_thread-mt-gd-1_57;libboost_thread-mt-gd;libboost_thread-mt;libboost_thread;libboost_thread-iw-mt-s-gd-1_57;libboost_thread-iw-mt-s-gd;libboost_thread-mt-s-gd-1_57;libboost_thread-mt-s-gd
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:1001 ] Searching for SYSTEM_LIBRARY_RELEASE: libboost_system-iw-mt-1_57;libboost_system-iw-mt;libboost_system-mt-1_57;libboost_system-mt;libboost_system;libboost_system-iw-mt-s-1_57;libboost_system-iw-mt-s;libboost_system-mt-s-1_57;libboost_system-mt-s
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:1037 ] Searching for SYSTEM_LIBRARY_DEBUG: libboost_system-iw-mt-gd-1_57;libboost_system-iw-mt-gd;libboost_system-mt-gd-1_57;libboost_system-mt-gd;libboost_system-mt;libboost_system;libboost_system-iw-mt-s-gd-1_57;libboost_system-iw-mt-s-gd;libboost_system-mt-s-gd-1_57;libboost_system-mt-s-gd
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:1001 ] Searching for FILESYSTEM_LIBRARY_RELEASE: libboost_filesystem-iw-mt-1_57;libboost_filesystem-iw-mt;libboost_filesystem-mt-1_57;libboost_filesystem-mt;libboost_filesystem;libboost_filesystem-iw-mt-s-1_57;libboost_filesystem-iw-mt-s;libboost_filesystem-mt-s-1_57;libboost_filesystem-mt-s
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:1037 ] Searching for FILESYSTEM_LIBRARY_DEBUG: libboost_filesystem-iw-mt-gd-1_57;libboost_filesystem-iw-mt-gd;libboost_filesystem-mt-gd-1_57;libboost_filesystem-mt-gd;libboost_filesystem-mt;libboost_filesystem;libboost_filesystem-iw-mt-s-gd-1_57;libboost_filesystem-iw-mt-s-gd;libboost_filesystem-mt-s-gd-1_57;libboost_filesystem-mt-s-gd
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:1001 ] Searching for PYTHON_LIBRARY_RELEASE: libboost_python-iw-mt-1_57;libboost_python-iw-mt;libboost_python-mt-1_57;libboost_python-mt;libboost_python;libboost_python-iw-mt-s-1_57;libboost_python-iw-mt-s;libboost_python-mt-s-1_57;libboost_python-mt-s
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:1037 ] Searching for PYTHON_LIBRARY_DEBUG: libboost_python-iw-mt-gd-1_57;libboost_python-iw-mt-gd;libboost_python-mt-gd-1_57;libboost_python-mt-gd;libboost_python-mt;libboost_python;libboost_python-iw-mt-s-gd-1_57;libboost_python-iw-mt-s-gd;libboost_python-mt-s-gd-1_57;libboost_python-mt-s-gd
[ C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindBoost.cmake:1088 ] Boost_FOUND = 1
Boost version: 1.57.0
Found the following Boost libraries:
  thread
  system
  filesystem
  python
Configuring done

如何强制编译仅使用静态库？我认为CMake文件中的选项就是这种情况。此外，它正在使用线程的示例... 安装Boost.Python可能有问题吗？

Answer 1

使用Boost.Python时，默认配置是动态链接。要强制进行静态链接，请在编译中定义BOOST_PYTHON_STATIC_LIB。考虑一下：

在CMake中添加add_definitions(-DBOOST_PYTHON_STATIC_LIB)
在之前添加#define BOOST_PYTHON_STATIC_LIB ，包括boost/python.hpp

在#define BOOST_PYTHON_STATIC_LIB
中添加boost/config/user.hpp

Boost.Python是Boost_USE_STATIC_LIBS CMake变量的一个例外。 FindBoost documentation注意到：

在Visual Studio和Borland编译器上，Boost头请求自动链接到相应的库。 [...] Boost自动链接通常会请求静态库，但有一些例外（例如Boost.Python）。

不幸的是，BOOST_PYTHON_STATIC_LIB，Boost user settable options和Choosing a Boost.Python Library Binary文档中都没有列出Py_Finalize()选项。

给出了示例代码的其他一些建议：

Per Boost.Python的Boost.Python Configuration Information，不要调用Py_Finalize()。一些内部Boost.Python对象将在python.h期间保持活动状态，并且仅在Boost.Python卸载时尝试删除，导致对象尝试使用不存在的解释器进行删除。

不要直接包含boost/python/detail/wrap_python.hpp。如果必须，请考虑改为包含python.h。

不要在{{1}}（或Boost.Python文件）之前包含任何系统标头。这种限制是由Python强加的（见embedding documentation）。

here部分记录了后两项建议。

Answer 2

您的计算机上似乎遇到finding dll's问题。作为temporary fix，您可以尝试将.dll文件重命名为.pyd。

强制CMake / VisualStudio使用Boost.Python的静态库

2 个答案: