Question

我想编译这样的simple code：

#include <iostream>
#include <fstream>
#include <string>

#include <zlib.h>

#include <boost/iostreams/filtering_streambuf.hpp>
#include <boost/iostreams/copy.hpp>
#include <boost/iostreams/filter/gzip.hpp>

int main()
{
    std::string hello =  "Hello world";

    std::ofstream zip_png_file( "hello.gz",  std::ofstream::binary);
    boost::iostreams::filtering_streambuf< boost::iostreams::input> in;
    in.push( boost::iostreams::gzip_decompressor());
    in.push(hello);
    boost::iostreams::copy(in, zip_png_file);

    std::cin.get();

    return 0;
}

我将Boost改编为：

-j4 --prefix="C:\Program Files\Boost" --without-mpi --without-python link=static runtime-link=static install

到那时我的系统中没有安装 zlib 或 bzip2 。现在我将zlib和bzib2静态编译为"C:\Program Files\zlib"和"C:\Program Files\bzip2"（tham中包含lib和include个文件夹）

我创建了简单的VS2010项目和静态链接的boost，链接的zip添加了包含文件夹。但是没有编译我得到了5个错误：

Error   5   error C1903: unable to recover from previous error(s); stopping compilation c:\program files (x86)\boost-1.47.0\include\boost\iostreams\traits.hpp  242
Error   1   error C2039: 'category' : is not a member of 'std::basic_string<_Elem,_Traits,_Ax>' c:\program files (x86)\boost-1.47.0\include\boost\iostreams\traits.hpp  
Error   2   error C2146: syntax error : missing ';' before identifier 'type'    c:\program files (x86)\boost-1.47.0\include\boost\iostreams\traits.hpp  242
Error   4   error C2208: 'boost::type' : no members defined using this type c:\program files (x86)\boost-1.47.0\include\boost\iostreams\traits.hpp  242
Error   3   error C4430: missing type specifier - int assumed. Note: C++ does not support default-int   c:\program files (x86)\boost-1.47.0\include\boost\iostreams\traits.hpp  242

所以我想知道在编译所有boost之后zlib可以连接到boost Iostreams，或者我必须重建它，如果是的话我应该添加什么参数以获得100％静态链接的正常Boost + Boost.Iostreams（使用zlib）支持）？

Answer 1

首先，即使在正确配置的系统上，代码也不会编译：它尝试使用字符串（而不是流）作为源，并尝试将gzip_decompressor应用于纯ASCII字符串。

以下代码在Visual Studio 2010 SP1上编译并运行，BoostPro安装程序使用所有默认选项安装了boost，而不安装其他库。

#include <fstream>
#include <sstream>
#include <string>
#include <boost/iostreams/filtering_streambuf.hpp>
#include <boost/iostreams/copy.hpp>
#include <boost/iostreams/filter/gzip.hpp>
int main()
{
    std::string hello = "Hello world";
    std::istringstream src(hello);

    boost::iostreams::filtering_streambuf< boost::iostreams::input> in;
    in.push(boost::iostreams::gzip_compressor());
    in.push(src);

    std::ofstream zip_png_file( "hello.gz",  std::ofstream::binary);
    boost::iostreams::copy(in, zip_png_file);
}

如何在Windows上使用zip（gz）支持单独构建Boost.Iostreams？

1 个答案: