Mingw-w64 Unable to link version library

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• Is it possible that a .jar file called from c++ writes a file?

  I am trying to get the output of a .jar file from my C++ used in UWP. The jar contains a complex algorithm and writes the output to a file. Calling it through the console works perfect but inside my program it seems to execute but not creating a file.

  Don't ask now why I'm desperating getting the output via a file instead of Pipes. This is also a question from me: CreateProcess Pipe is always empty

  It actually returns 1 so it tells me that it doesn't find the file.

  This is how I try to implement my .jar in my C++ dll:

  STARTUPINFO sInfo;
  ZeroMemory(&sInfo, sizeof(sInfo));
  PROCESS_INFORMATION pInfo;
  ZeroMemory(&pInfo, sizeof(pInfo));
  sInfo.cb = sizeof(sInfo);
  
  //if (!SetHandleInformation(wPipe, HANDLE_FLAG_INHERIT, 0))
      //return "Error SetHandleInformation";
  
  if (!CreateProcess(TEXT("C:\\\\Program Files (x86)\\Java\\jdk1.8.0_161\\jre\\bin\\java.exe"), TEXT("-jar decode_fileout.jar"), NULL, NULL, false, CREATE_DEFAULT_ERROR_MODE, NULL, NULL, &sInfo, &pInfo)) {
      return 0;
  }
  WaitForSingleObject(pInfo.hProcess, INFINITE);
  
  string fileContent;
  ifstream myfile("decode.txt");
  if (myfile.is_open())
  {
      getline(myfile, fileContent);
      myfile.close();
  }
  else return 1;
  
  char *endPtr;
  if (isdigit(fileContent[0]))
      return strtoll(fileContent.c_str(), &endPtr, 10);
  else
      return 2;
  
• How to test my dll file written in fortran?

  I have written a Fortran code for being compiled as a '*.DLL' file.

  The program which reads that file is a Finite Elements Method software named Plaxis, I already achieved to generate the '*.DLL' file in Visual Studio and Plaxis recognizes my model but the model does not work fine.

  I would like to evaluate all the variables involved in my code and the procedure that Plaxis is using to read them, but when I use commands like "write(*,*) 'variable'" Plaxis does not show me what I asked in the source code.
• Cleanest method to include all required DLLs in a single nuget package?

  I am trying to create a nuget package of a binary PowerShell module that wraps another C# Main Library project. I am struggling to get all the required DLLs included in the generated nuget package because the Main Library has lots of nuget package dependencies that aren't being included.

  The reason why I want the nuget package to include both the two projects DLL files but also Main Library's required DLL files is so that I can create a psd1 file for the binary PowerShell module that will have all the required DLLs under the RequiredAssemblies field. This is required as all the required DLLs must be imported before importing the main binary PowerShell module DLL file.

  Below is the package structure I am looking for:

  Package
  - lib
    - netstandard2.0
      - PowerShellModule.dll
      - PowerShellModule.psd1
      - MainLibrary.dll
      - MainLibraryDep1.dll
      - MainLibraryDep2.dll
      - ...
  

  Once the nuget package has been installed I should be able to call Import-Module "Package\lib\netstandard2.0\PowerShellModule.psd1" and be good to go.

  When using nuget pack -IncludeProjectReferences in the binary PowerShell module project folder it successfully includes the binary PowerShell module DLL and the Main Library DLL in the final package but none of the nuget dependencies that the Main Library has. Is there any way to include these?

  One solution I thought of was simply building the PowerShell binary module and making sure it generated all the required DLLs (including those for Main Library), copying these files to a folder and packaging that folder however that seems very hacky and not something I would really want to do.

  I'm also aware that I should really just have the binary PowerShell module project build as a separate nuget package that is dependent on the Main Library which in turn has all its dependenices, however this would mean after installing all the packages each of the RequiredAssemblies fields in the psd1 file would have to jump out of the current directory a few times using ..\..\ so that it could get into one of the other depdendent packages to import their dll file. This is due to the way nuget installs it's packages and as far as I'm aware you cannot change this.
• Grep string in the source code of a given http link

  I want to use bash commands line to find a string in the source code of a given web page. Manually I would do it like in those steps:

  1. Open https://stackoverflow.com
  2. cltrl+U (to get the source code in google chrome)
  3. cltrl+F to find the string

  Is there a way to do that using bash commands or any other way with python for example?
• Get the two first files from HDFS

  Is there a way to get the two first files from HDFS using command line?. My hadoop version is 2.7.3

  I have a folder in HDFS with multiple files, that another application is puting the there: /user/Lab01/inpu/ingestionFile1.json /user/Lab01/inpu/ingestionFile2.json /user/Lab01/inpu/ingestionFile3.json /user/Lab01/inpu/ingestionFile4.json

  I need to work just with the first two files based on time, so if list the content using:

   $ hdfs dfs -ls -R /user/Lab01/input
  
  -rw-------   3 huser dev       668 2019-02-13 11:34 /user/Lab01/inpu/ingestionFile1.json
  -rw-------   3 huser dev        668 2019-02-13 11:36 /user/Lab01/inpu/ingestionFile2.json
  -rw-------   3 huser dev        668 2019-02-13 11:38 /user/Lab01/inpu/ingestionFile3.json
  -rw-------   3 huser dev        668 2019-02-13 11:41 /user/Lab01/inpu/ingestionFile4.json
  

  In order to get the two first files from the directory I simple pip the command using head -2 to get:

  $ hdfs dfs -ls -R /user/Lab01/input | head -2
  
  -rw-------   3 huser dev       668 2019-02-13 11:34 /user/Lab01/inpu/ingestionFile1.json
  -rw-------   3 huser dev        668 2019-02-13 11:36 /user/Lab01/inpu/ingestionFile2.json
  

  The normal command to get files from hdfs is using -get:

    hdfs dfs -get /user/Lab01/input/fileName
  

  So thats why right now I'm trying to merge this two commands:

  $ hdfs dfs -get /user/Lab01/input | hdfs dfs -ls -R /user/Lab01/input | head -2 
  

  But I don't get the desire result, I just get a message giving me the output from the last command (hdfs dfs -ls -R /user/Lab01/input | head -2) :

  -rw-------   3 huser dev       668 2019-02-13 11:34 /user/Lab01/inpu/ingestionFile1.json
  -rw-------   3 huser dev        668 2019-02-13 11:36 /user/Lab01/inpu/ingestionFile2.json
  
• How to fix "segmentation fault 11" when running code in terminal?

  I am having issues running my code through terminal on macOS. The code takes 2 binary text files, and convolves the two signals. I first use gcc program.c -o execute to execute the code, and then I use ./execute dataFile outputFile imuplseFile to run the code. When I do this, I get the error code of segmentation fault: 11. I know that seg faults occur when memory that shouldn't be accessed is accessed with the code, but I can't find any place where this is occurring. When this occurs, my output file, y, has no data in it. If I run the code in Xcode instead of command line, I don't get any segmentation faults and the output file, y, is filled with the correct data. Is there any reason that running this program in the command line would change the behavior of the code?

  FILE *fx, *fy, *fh;
  fx=fopen(argv[1], "rb");
  fy=fopen(argv[2], "wb");
  fh=fopen(argv[3], "rb");
  
  int Lx, Lh, Ly, Lz;
  dsp_file_header headx, headh, heady;
  fread(&headx, sizeof(dsp_file_header), 1, fx);
  fread(&headh, sizeof(dsp_file_header), 1, fh);
  Lh=headh.dim0;
  Lx=headx.dim0;
  Ly=Lx+Lh-1;
  Lz=Lx+2*(Lh-1);
  memcpy(&heady, &headx, sizeof(dsp_file_header));
  heady.dim0=Ly;
  fwrite(&heady, sizeof(dsp_file_header),1,fy);
  
  float *x=(float*)calloc(Lz, sizeof(float));
  float *h=(float*)calloc(Lh, sizeof(float));
  float *y=(float*)calloc(Ly, sizeof(float));
  
  fread(x+Lh-1, sizeof(float),Lx,fx);
  
  int n, k;
  float t;
  fread(h, sizeof(float), Lh, fh);
  for(n=0; n<Lh/2; n++) {
      t=h[n];
      h[n]=h[Lh-1-n];
      h[Lh-1-n]=t;
  }
  
  for(n=0; n<Ly; n++) {
      t=0.0;
      for(k=0; k<Lh; k++) {
          t += h[k]*x[k+n];
      }
      y[n]=t;
  }
  fwrite(y, sizeof(float), Ly, fy);
  
  fclose(fx);
  fclose(fy);
  fclose(fh);
  free(x);
  free(y);
  free(h);
  

  I expect the resulting y file to be the result of convolving x with h, but when running the code through command line the resulting y file has no data. When running with Xcode, the resulting y file is exactly as expected.
• How to upgrade the MySQL version to the latest version in phpMyAdmin?

  I'm working with WordPress to create a website and it appears to be a problem, therefore I need to upgrade the MySQL version. I have already installed MySQL (8.0.15) to my computer, but when I go into phpMyAdmin it still appears the older version (5.1.55). How can I upgrade the version in phpMyAdmin?
• How to get Windows Version for all Windows in C++?

  I'd like to get the Windows Version on all Windows starting from Windows XP with a C++ code. I need a library available on all Windows.

  I tried a lot of answers with GetVersionEx etc, but none of these worked...
• How to set app version 4 digit in vs installer project 2015?

  Visual studio installer project 2015 allows to set app version but only 3 digit. I want to set it 4, like 4.1.2.1. But when I do it with properties after build vc does not create installer msi. How can I do it?
• Do I have to add tested source files to unit tests' project in VS2017?

  I'm trying to write unit tests for my project using this tutorial.

  After compiling project containing tests I get linker errors, almost the same ones as in this question. The problem is that solution there was adding reference to a project being tested but I've already did it and I still get the same errors as if the reference wasn't added. Then I found this question. Solution there is just adding tested source files to tests' project and of course it works fine.

  Here is example code that gives me error LNK2019: unresolved external symbol:

  A.h (in .exe project)

  #pragma once
  
  struct A
  {
      int a;
  
      A(int a);
  };
  

  A.cpp (in .exe project)

  #include "A.h"
  
  A::A(int a) : a(a)
  {
  }
  

  Tests.cpp (in tests project)

  #include "stdafx.h"
  #include "CppUnitTest.h"
  #include "../Example/A.h"
  
  using namespace Microsoft::VisualStudio::CppUnitTestFramework;
  
  TEST_CLASS(UnitTests)
  {
  public:
      TEST_METHOD(TestStructInitialization)
      {
          int a = 5;
          A testObject(a);
          Assert::AreEqual(a, testObject.a);
      }
  };
  

  Maybe I misunderstood something but I think adding reference is a thing that should allow doing tests without the need to add source files to tests project. In the first tutorial, that I already mentioned, there is nothing about adding source files to tests project but it doesn't work for me even with reference added. Adding every source file to both projects isn't very fast way to test everything so I wonder if there's another way of doing it.
• Why am I getting "undefined reference error" when instantiating a nested class in my outer class' constructor?

  I am getting this error:"/Priority_Queue.cpp:7: undefined reference to `Priority_Queue::Node::Node()"

  when I try to run this code. Priority_queue.cpp:

  #include <iostream>
  #include "Priority_Queue.h"
  
  
  Priority_Queue::Priority_Queue()
  {
          head = new Node();
  }
  

  Priority_queue.h:

  #include "State.h"
  class Priority_Queue
  {
      class Node
      {
          public:
              Node();
  
          private:
              Node* next = NULL;
              State* data;
      };
  
      public:
          Priority_Queue();
          virtual ~Priority_Queue();
  
          void print_head();
  
          void insert(State*);
          State* pop();
  
      private:
          Node* head;
  
  };
  

  I know the nested class (Node) is only accessible from within the outer class (Priority_queue), but the Node class is defined inside the header file for Priority_queue so why isn't it working? I am new to C++.

  ================================ EDIT ====================================

  I figured it out thanks the the help of L.F. and M.M. The problem was that even though the nested class was being defined in the header file for Priority_queue, the constructor still wasn't defined. I just had to define the Node constructor in the Priority_queue.cpp file. I also changed the access of the the "next" and "data" fields in my Node class from private to public because I'll need to access them later from my priority queue. My final code is this:

  Priority_queue.h:

  #include "State.h"
  
  class Priority_Queue
  {
      class Node
      {
          public:
              Node();
              Node* next;
              State* data;
      };
  
      public:
          Priority_Queue();
          virtual ~Priority_Queue();
  
          void print_head();
  
          void insert(State*);
          State* pop();
  
      private:
          Node* head;
  
  };
  

  Priority_queue.cpp:

  #include <iostream>
  #include "Priority_Queue.h"
  
  Priority_Queue::Node::Node():next(NULL){
  
  }
  
  
  Priority_Queue::Priority_Queue()
  {
          head = new Priority_Queue::Node();
  }
  
• Getting a clang: error: linker command failed with exit code 1 (use -v to see invocation). I need help understanding what the issue could be

  

  I am getting this linker error and need to understand why it won't build
• My executable doesn't start in Windows. How to debug failed DLL loading?

  i am have been trying for last week to compile my linux code to windows env , after all my code was compiled ,its been failing to start my executables since it failed on loading my dll it self .

  my project is composed of 1 executable called ( pcie_logger) and 1 dll (libpci_test.dll) which are linked to few static libraries in windows , the dll is being loaded dynamically only in startup .

  PcieLogger.cpp:

  int
  main(int argc, char* argv[])
  {
  LIB_TRACK2(__PRETTY_FUNCTION__);
  PcieLogger tool;
  printf("Hello World\n");
  return PciTest::main(tool, argc, argv);
  }
  

  PcieLogger.h:

  #include "PciTest.h"
  
  class PcieLogger: public PciTool {
  public:
  PcieLogger(): PciTool(){}
  virtual ~PcieLogger() = default;
  virtual u_int32_t   AddParserParams() override;
  u_int32_t           Run() override;
  };
  

  PciTest.cpp:

   #ifdef _WIN32
  BOOL APIENTRY DllMain( HANDLE hModule,
                     DWORD ul_reason_for_call,
                     LPVOID lpReserved
                     )
   {
  printf("PciTest::DllMain\n");
  switch (ul_reason_for_call) {
  case DLL_PROCESS_ATTACH:
      break;
  
  case DLL_PROCESS_DETACH:
      // DisconnectFromDriver();
      break;
  
  case DLL_THREAD_ATTACH:
  case DLL_THREAD_DETACH:
      break;
  }
  return TRUE;
  }
  
  #endif
  
  
  int PciTest::main(PciTest& test, int argc, char* argv[]) {
      printf("PciTest::main\n");
      testInstance = &test;
      int status = 0;
  try {
      status = status || test.AddParserParams();
      status = status || test.ParseArgs(argc, argv);
      status = status || test.InitResources(argv[0]);
      status = status || test.Run();
  } catch (exception& e) {
      test.mainExceptionTagsHandle(e.what());
      status = 1;
  }
  test.handleTestFinish(status);
  return status;
  }
  

  When i'm trying to run windbg on my executable i'm getting the following:

  (558.20fc): Access violation - code c0000005 (first chance)
  First chance exceptions are reported before any exception handling.
  This exception may be expected and handled.
  *** ERROR: Symbol file could not be found.  Defaulted to export symbols for 
  z:\compiled\libpci_test.dll - 
  libpci_test!ZN7PciTest4mainERS_iPPc+0x3c53b:
  00000000`00f6592b 64488b042500000000 mov   rax,qword ptr fs:[0] 
  fs:00000000`00000000=????????????????
  0:000> 
  
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  I try to use the function to jump to a specific line, but if I press the key combination CTRL+_ then the text size is getting smaller.

  

  It works on another computer as intended. How can I resolve this?
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  I don't remember when but there is something unfamiliar feature for me was updated to my terminal that automatically insert an newline while writing git commit message with Vim.

  I'm currently using some hooks with my commit message and the form is fit with my old style so I don't need this fancy feature right now.

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