Cannot use Boost.process

问题:

I download and upack Boost library version of 1.54.0. I did everything like in answer to this question: How to use Boost in Visual Studio 2010 Then I download and unpack Boost.process from here: http://www.highscore.de/boost/process/ and did everything as in answer to this question: How to compile Boost.Process library? .

I put holder process and process.hpp in holder boost, put other holder process in to libs and was trying to compile it with b2.exe and bjam.exe with "--with-process", but get "wrong library name 'process'.

Whatever, I include library into my project and put this code:

    namespace bp = ::boost::process;

        int main()
        {

        std::string exec = "G:\\Detect.exe"; 
        std::vector<std::string> args; 
        args.push_back("--version");

        bp::context ctx; 
        ctx.stdout_behavior = bp::silence_stream();

        bp::child c = bp::launch(exec, args, ctx);

        return 0;
    }

When I run it I get some errors:

1>c:\boost_1_54_0\boost\process\detail\pipe.hpp(129): error C2665: 'boost::system::system_error::system_error' : none of the 7 overloads could convert all the argument types
1>          c:\boost_1_54_0\boost\system\system_error.hpp(39): could be 'boost::system::system_error::system_error(int,const boost::system::error_category &,const std::string &)'
1>          c:\boost_1_54_0\boost\system\system_error.hpp(43): or       'boost::system::system_error::system_error(int,const boost::system::error_category &,const char *)'
1>          while trying to match the argument list '(DWORD, overloaded-function, const char [54])'
1>c:\boost_1_54_0\boost\process\operations.hpp(130): error C2039: 'filesystem_error' : is not a member of 'boost::filesystem'
1>c:\boost_1_54_0\boost\process\operations.hpp(130): error C3861: 'filesystem_error': identifier not found

What should I do?

回答1:

I had similar situation.

I downloaded from https://svn.boost.org/svn/boost/sandbox/process/ the non-official Boost.Process library (revision 86799 says the site) and used it with Boost 1.55. Then just put the headers inside the Boost include folder (I did not see any *.cpp files, so the lib seems completely inline). What was discovered:

• /process/operations.hpp(130): 'filesystem_error' is not a member of boost::filesystem
  Put inside the operations.hpp file #include <boost/filesystem.hpp>

• /process/detail/pipe.hpp(129): 'boost::system::system_error::system_error'
  Append to the boost::system::system_category a function invocation i.e. it will become boost::system::system_category().

• /process/detail/win32_ops.hpp(329): left of '.size' must have class/struct/union
  Basically the template is const char*, but the function is implemented as it is std::string. Thus I just added at the beginning of the function, code like std::string exe (exe_); (the exe_ is the new name of the const char* argument). Maybe not the best solution, but good enough I think.

Hope this helps.

回答2:

Il'ya Zhenin, In pipe.hpp, where ever you are using "boost::system::system_category" replace it with boost::system::system_category(). This will resolve the system_error issue.

For fixing filesystem_error issue, add #include <boost/filesystem.hpp> in the operations.hpp header section. I hope this helps.