Mingw-w64 Unable to link version library

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• Unresolved symbol log4cplus::tcerr error when dll use log4cplus in Windows UNICODE

  I want to create an UNICODE dll use log4cplus on Window 10 Visual Studio 2017 Community with UNICODE character set. I try the following steps:

  1. Build the log4cplus with Debug_unicode mode, and get the lib: log4cplusSUD.lib, log4cplusUD.lib and log4cplusUD.dll

  2. Create an UNICODE dll project wrapped log4cplus by Visual Studio 2017 Community. I add Project Properties->Configuration Properties with:

     • log4cplus/include to C/C++->All Options->Additional Include Directories
     • log4cplus-1.1.2\msvc10\x64\bin.Debug_Unicode to Linker->All Options->Additional Library Directories
     • log4cplusUD.lib to Linker->All Options->Additional Dependencies

     Here is the code:

  // log.h
  #pragma once
  #include "stdafx.h"
  #include <log4cplus/tstring.h>
  
  #define LOG_LIB __declspec(dllexport)
  
  LOG_LIB bool initialize(const log4cplus::tstring &progress_name,
                          const log4cplus::tstring &config_file =
                              log4cplus::tstring());
  
  // log.cpp
  #include "log.h"
  
  #include <cstdio>
  #include <iomanip>
  #include <iostream>
  
  #include <log4cplus/config.hxx>
  #include <log4cplus/configurator.h>
  #include <log4cplus/thread/threads.h>
  #include <log4cplus/streams.h>
  #include <log4cplus/tchar.h>
  #include <log4cplus/layout.h>
  #include <log4cplus/fileappender.h>
  
  bool initialize(const log4cplus::tstring &progress_name,
                  const log4cplus::tstring &config_file)
  {
      try {
          /* Initialize log4cplus first. It's NOT necessary on Linux */
          log4cplus::initialize();
  
          /* Configure */
          if (!config_file.empty()) {
              log4cplus::PropertyConfigurator::doConfigure(config_file);
          }
      }
      catch (...) {
          log4cplus::tcerr << LOG4CPLUS_TEXT("Failed to initialize log4cplus!") << std::endl;
          return false;
      }
  
      return true;
  }
  

  After I build the project, I get the Unresolved symbol error:

  log.obj : error LNK2001: unresolved external symbol "class std::basic_ostream<wchar_t,struct std::char_traits<wchar_t> > & log4cplus::tcerr" (?tcerr@log4cplus@@3AEAV?$basic_ostream@_WU?$char_traits@_W@std@@@std@@EA)
  

  I use dumpbin.exe log4cplusUD.dll, I can get the symbol:

  ?tcerr@log4cplus@@3AEAV?$basic_ostream@_WU?$char_traits@_W@std@@@std@@EA (class std::basic_ostream<wchar_t,struct std::char_traits<wchar_t> > & log4cplus::tcerr)
  

  If I link to log4cplusSUD.lib, it works fine!!!! So where did I make a mistake?
• Compiling Vim with python3 showing E370: Could not load library libpython3.7m.a

  I have been trying to compile Vim with python3 on my Mac for many hours, as a result, it looks fine now, as the following:

  VIM - Vi IMproved 8.1 (2018 May 18, compiled Dec 9 2018 00:37:54) macOS version Included patches: 1-573 Huge version without GUI.
  +python/dyn +python3/dyn
  

  but when I tried to test using :echo(has('python3')), it gives 0.

  And command like :python3 print('aha!') gives error:

  E370: Could not load library libpython3.7m.a
  E263: Sorry, this command is disabled, the Python library could not be loaded.
  

  While python2 works fine. Can anyone help me with mercy?!

  Thank you so so much!

  ---

  p.s. this is my .configure used:

  ./configure --with-features=huge \
  --enable-multibyte \
  --enable-rubyinterp=yes \
  --enable-python3interp=yes \
  --with-python3-config-dir=/Users/mac/anaconda3/lib/python3.7/config-3.7m-darwin \
  --enable-pythoninterp=yes --with-python-config-dir=/usr/local/Cellar/python@2/2.7.15_1/Frameworks/Python.framework/Versions/2.7/lib/python2.7/config \
  --enable-luainterp=yes \
  --enable-hangulinput=yes \
  --enable-cscope \
  --prefix=/usr/local/
  

  by the way, --with-python3-config-dir=/usr/local/Cellar/python/3.7.1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/config-3.7m-darwin \ works the same.
• c++ project crashes in debug mode due to vcomp100d.dll missing

  When compiling a c++ project in debug mode, the resulting executable crashes because a "dependent dll was not found". According to dependency walker, the culprit is vcomp100d.dll.

  Additional info: I am using MSVC2017 and building with MSVC2013 toolset. The same project runs fine in release mode, and I did find vcomp100.dll in my sysWoW64 folder, but no vcomp100d.dll.

  What is the best\safest way to get this dll?
• illegal start of expression on my tic tac toe game

  I am having a little trouble running my tic tac toe problem. I looked over my code so many times but can not find the problem. I double checked all my parentheses and brackets. When I run it into the command line, it says that there is illegal use of expressions and ';' expected. I was wondering if one can spot the problem.

  Input:

  import java.util.Scanner;
  
  public class TicTacToe
  {
      public static int row, col;
      public static Scanner scan = new Scanner(System.in);
      public static char[][] board = new char[3][3];
      public static char playerTurn = 'X';
  
      public static void main(String[] args)
      {
          // Implement play method
          for(int i = 0; i < 3; i++)
          {
              for(int j = 0; j < 3; j++)
              {
                  board[i][j] = '_';
              }   
          }
          Play();
      }
  
      public static void Play() 
      {
          boolean playing = true;
          System.out.println("Player X's turn to play! ");
  
          // Implement print board method
          while(playing)
          {
              System.out.println("\nEnter row and column ");
              row = scan.nextInt()-1;
              col = scan.nextInt()-1;
              board[row][col]=playerTurn;
  
              if(GameOver(row,col))
              {
                  playing = false;
                  System.out.println("Game over! player" + playerTurn + " wins! ");
              }
  
              PrintBoard();
              if(playetTurn == 'X')
                  playerTurn = 'O';
              else
                  playerTurn = 'X';
              if(playerTurn == 'X')
              {
                  System.out.println("Player X's turn to play! ");
              }
              else if(playerTurn == 'O')
              {
                  System.out.println("Player O's turn to play! ");
              }
          }
          public static void PrintBoard()
          {
              for(int i = 0; i < 3; i++)
              {
                  System.out.println();
                  for (int j = 0; j < 3; j++)
                  {
                      if (j == 0)
                      {
                      System.out.print("|");
                      }
                      System.out.print(board[i][j] + " |");
                  }
              }
              System.out.println();
          }
          // Check if game is over
          public static boolean GameOver(int move1,int move2)
          {
              if(board[0][move2] == board[1][move2] && board[0][move2] == board[2][move2])
                  return true;
              if(board[move1][0] == board[move1][1] && board[move1][0] == board[move1][2])
                  return true;
              if(board[0][0] == board[1][1] && board[0][0] == board[2][2] && board[1][1] != '_')
                  return true;
              if(board[0][2] == board[1][1] && board[0][2] == board[2][0] && board[1][1] != '_')
                  return true;
              return false;
          }
      }
  }
  
• Function with defined parameter raising ArgumentError

  I am trying to create a command-line hash cracking tool. I defined my methods as in the optparse documentation. My code is below.

  def wordlist(parser)
      parser.on('-w', '--wordlist=WORDLIST', 'Wordlist of passwords to use') do |w|
        @options[:wordlist] = w
      unless File.file?(w)
        raise Errno::ENOENT
      else
        @wordlist = File.open(w)
        @wordlist = @wordlist.readlines.map! {|line| line.strip}
      end
    end
  end
  

  I don't know how to fix this error:

  in 'wordlist': wrong number of arguments (given 0, expected 1) (ArgumentError)
  

  Why is my program producing errors?
• Different output between Command Line and Code Blocks

  I am trying to implement a library (on linux) to check for more instances of a running program.

  The program gets the executable name of the running program, saves it into a binary file ( .existence ) together with the programs PID.

  Latter, before the program runs (again) does a check to see if there is already an instance of that program by checking if there is the .existence file and if so, a comparison is made.

  Everything works as expected in codeblocks but when I run it in command line the function ( int find_pid ( const char *const instance ) ) which returns the PID of the program returns 0 instead.

  Here is a part of the program which can be compiled and tested:

  #include <stdio.h>
  #include <string.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include <sys/wait.h>
  
  void write_bin_file     ( const char *const fileName, const char *const msg );
  char *read_bin_File     ( const char *const fileName );
  char *my_strtok   ( char *msg );
  
  int find_pid ( const char *const instance );
  
  int main ( int argc, char *argv[] )
  {
      char instance[ strlen( argv[0] ) + 1 ];
      memset( instance, '\0', sizeof( instance ) );
  
      if ( argc < 2 )
      {
          strcpy( instance, argv[0] );
  
          char *buffer = my_strtok( instance );
  
          write_bin_file ( ".existence", buffer );
  
          char *ret = read_bin_File( ".existence" );
          printf( "\n%s\n", ret );
  
          printf("Actc_pid =\t%d\n", getpid() );
          printf("Find_pid =\t%d\n", find_pid ( buffer ) );
          free( ret );
      }
  
      sleep( 5 );
  }
  
  char *read_bin_File ( const char *const fileName )
  {
      FILE *fp = fopen( fileName, "rb" );
      if ( fp == NULL )
      {
          return NULL;
      }
  
      unsigned short len = 0;
      fread( &len, sizeof(unsigned short), 1, fp);
  
      char *buffer = malloc( sizeof( *buffer ) * len );
      fread( buffer, sizeof( *buffer ), len, fp );
  
      fclose(fp);
      return buffer;
  }
  
  void write_bin_file( const char *const fileName, const char *const msg )
  {
      FILE *fp = fopen( fileName, "wb");
      if ( fp == NULL )
      {
          printf( "Error, write_bin_file()\n" );
          exit( EXIT_FAILURE );
      }
      size_t len = strlen( msg ) + 1;
      fwrite( &len, sizeof( unsigned short ), 1, fp);
      fwrite( msg, sizeof(char), len, fp);
      fclose( fp );
  }
  
  int find_pid ( const char *const instance )
  {
      char line[256];
      memset( line, '\0', sizeof( *line ) );
  
      char buffer[555];
      memset( buffer, '\0', sizeof( *buffer ) );
  
      sprintf( buffer, "ps -A | grep %s", instance );
      FILE *cmd = popen( buffer, "r");
  
      fgets( line, 256, cmd);
      pid_t pid = (pid_t)strtoul(line, NULL, 10);
  
      pclose( cmd );
      return pid;
  }
  
  char *my_strtok( char *msg )
  {
      char *ret = NULL;
      char *tmp = strtok( msg, "/" );
      while ( tmp != NULL )
      {
          ret = tmp;
          tmp = strtok( NULL, "/");
      }
  
      if ( ret == NULL )
      {
          return NULL;
      }
  
      return ret;
  }
  

  Codeblocks Outputs:

  program
  Actc_pid =  11890
  Find_pid =  11890
  

  Command line Outputs:

  program
  Actc_pid =  11900
  Find_pid =  0
  

  Valgrind:

  valgrind --leak-check=full --track-origins=yes --show-leak-kinds=all Templates/Program/bin/Debug/Program
  ==12414== Memcheck, a memory error detector
  ==12414== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
  ==12414== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
  ==12414== Command: Templates/Program/bin/Debug/Program
  ==12414== 
  
  Program
  Actc_pid =  12414
  Find_pid =  0
  ==12414== 
  ==12414== HEAP SUMMARY:
  ==12414==     in use at exit: 0 bytes in 0 blocks
  ==12414==   total heap usage: 8 allocs, 8 frees, 14,686 bytes allocated
  ==12414== 
  ==12414== All heap blocks were freed -- no leaks are possible
  ==12414== 
  ==12414== For counts of detected and suppressed errors, rerun with: -v
  ==12414== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
  
• Where to keep and how to handle the version of a Java application?

  I am working on a Java application and want to show the version number as part of an "About" or "Help" dialog.

  UPDATE: As a clarification: I do not want to display the Java version but the version of the application.

  At the moment I keep the current version information in the build.gradle and ideally, I do not need to keep track of the version in different places for runtime and while building.

  I found some very old articles which suggested to get the current version from the JAR`s manifest but I am not sure if this is still the way to go.

  My natural approach would be to have an application.properties file in the classpath which contains entries like application.name, and application.version. If I am not wrong those properties can be accessed by Gradle while building the distribution and as well by the application during runtime.

  Are there any other ways to do such a thing I am not aware of?
• .Net Framework 3.5 and .Net Framework 3.5 SP1 have same version number?

  I have heard I can check my .Net Framework Version from HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5.

  There are two entries SP and Version. .Net Framework 3.5 SP1 has value 1(true) for SP entry.

  In this part, I have a question. .Net Framework 3.5 has same version number with .Net Framework 3.5 SP1 and there is only one difference of SP entry value?

  For example, I know that version entry value is 3.5.30729.12345. However I don't know about SP entry value. In that case, can I convince version entry value indicates .Net Framework 3.5 SP1?

  thanks.
• Angular Material and Angular CLI versions mismatch

  I have the following:

  @angular/cli: 1.4.3
  node: 8.9.2
  os: win32 x64
  @angular/animations: 4.4.7
  @angular/cdk: 5.2.4
  @angular/common: 4.4.6
  @angular/compiler: 4.4.6
  @angular/core: 4.4.6
  @angular/forms: 4.4.6
  @angular/http: 4.4.6
  @angular/material: 5.2.4
  @angular/platform-browser: 4.4.6
  @angular/platform-browser-dynamic: 4.4.6
  @angular/router: 4.4.6
  @angular/cli: 1.4.3
  @angular/compiler-cli: 4.4.6
  @angular/language-service: 4.4.6
  typescript: 2.3.4
  

  I tried to solve the problem with this post

  but i didnt work. Can someone help ?
• gcc: why does linking fail when rebuilding after changing .c file but not when initially building?

  I have the following files:

  main.c

  #include "other.h"
  
  int main(int argc, char *argv[]) {
      other();
      return 0;
  }
  

  other.c

  #include "other.h"
  
  void other(void) {
      1+1;
  }
  

  other.h

  #ifndef OTHER_H
  #define OTHER_H
  
  void other(void);
  
  #endif
  

  and I am using this makefile:

  OBJ = other.o main.o
  
  main: $(OBJ)
      gcc $(OBJ) -o $@
  
  main.o: main.c
      gcc -c main.c
  
  other.o: other.c
      gcc -c other.c
  
  clean:
      rm -f $(OBJ) main
  

  When I run make clean && make, everything compiles and links successfully.

  Then, I make a whitespace change to other.c.

  Now, when I run make, I get the following error:

  gcc other.o main.o -o main
  main.o: In function `main':
  main.c:(.text+0x5): undefined reference to `other'
  collect2: error: ld returned 1 exit status
  Makefile:6: recipe for target 'main' failed
  make: *** [main] Error 1
  

  Why does linking fail after updating other.c?

  Note that linking works if I make a whitespace change to main.c, or if I again run make clean.

  UPDATE: In case it's useful, I compared the other.o file in the working case with the other.o file in the broken case; they have a slight difference. I have no idea what would cause this difference, nor how to interpret it. See image: difference between other.o, working case and broken case
• eiffel c compilation failure: error LNK2001: unresolved external symbol

  I'm trying to get familiar with Eiffel language so I've installed Eiffel Studio 18 and created a Graphics application. Compilation failed with message:

  Preparing C compilation using already configured msc C compiler...
  ERROR: Cannot start "nmake".ERROR: Cannot start "nmake".
  

  Documentation suggested that espawn utility may show available toolchains, however it seems to crash:

  PS C:\Program Files\Eiffel Software\EiffelStudio 18.07 GPL\tools\spec\win64\bin> & "C:\Program Files\Eiffel Software\EiffelStudio 18.07 GPL\tools\spec\win64\bin\espawn.exe" -l
  Eiffel Environment Command Spawn Utility - Version: 18.07
  Copyright Eiffel Software 1985-2018. All Rights Reserved.
  
  Available C/C++ compilers:
  
  
  espawn: system execution failed.
  Following is the set of recorded exceptions:
  
  ******************************** Thread exception *****************************
  In thread           Root thread            0x0 (thread id)
  *******************************************************************************
  -------------------------------------------------------------------------------
  Class / Object      Routine                Nature of exception           Effect
  -------------------------------------------------------------------------------
  APPLICATION         root's creation        Segmentation violation:
  <000000000363C588>                         Operating system signal.      Exit
  -------------------------------------------------------------------------------
  APPLICATION         root's creation
  <000000000363C588>                         Routine failure.              Exit
  -------------------------------------------------------------------------------
  

  Unfortunately I couldn't find any toolchain related stuff except for that espawn util so I've tried to launch Eiffel Studio from VS development command prompt hoping that it may implicitly rely on some environment variables. This indeed helped, however compilation still fails with linker error:

  Preparing C compilation using already configured msc C compiler...
  big_file_C28_c.c
  eoption.c
  big_file_E2_c.c
  big_file_C26_c.c
  big_file_C27_c.c
  big_file_C30_c.c
  big_file_C29_c.c
  big_file_C31_c.c
  eref.c
  epoly.c
  esize.c
  big_file_C25_c.c
  big_file_C24_c.c
  big_file_C23_c.c
  big_file_C22_c.c
  big_file_C21_c.c
  big_file_C20_c.c
  big_file_C19_c.c
  eplug.c
  eskelet.c
  enames.c
  evisib.c
  big_file_C18_c.c
  big_file_C17_c.c
  big_file_C16_c.c
  big_file_C15_c.c
  big_file_C13_c.c
  big_file_C14_c.c
  ececil.c
  big_file_C12_c.c
  einit.c
  eparents.c
  big_file_C11_c.c
  big_file_C10_c.c
  big_file_C9_c.c
  big_file_C8_c.c
  big_file_C7_c.c
  big_file_C6_c.c
  big_file_C5_c.c
  big_file_C4_c.c
  big_file_C3_c.c
  big_file_C2_c.c
  big_file_C1_c.c
  Скопировано файлов:         1.
  emain.c
  Microsoft (R) Windows (R) Resource Compiler Version 10.0.10011.16384
  Copyright (C) Microsoft Corporation.  All rights reserved.
  
  Microsoft (R) Incremental Linker Version 14.16.27024.1
  Copyright (C) Microsoft Corporation.  All rights reserved.
  
  -STACK:5000000 -NODEFAULTLIB:libc -STACK:5000000 -NODEFAULTLIB:libc -SUBSYSTEM:WINDOWS -OUT:my_wel_application_1.exe 
  e1\emain.obj 
  "C:\Program Files\Eiffel Software\EiffelStudio 18.07 GPL\studio\spec\win64\lib\msc\finalized.lib" "C:\Program Files\Eiffel Software\EiffelStudio 18.07 GPL\library\wel\spec\msc\win64\lib\wel.lib" 
  USER32.lib WS2_32.lib ADVAPI32.lib GDI32.lib SHELL32.lib MSIMG32.lib COMDLG32.lib UUID.lib OLE32.lib OLEAUT32.lib COMCTL32.lib MPR.LIB SHLWAPI.LIB WINSPOOL.LIB 
  my_wel_application_1.res 
  E2\Eobj2.lib E1\eparents.obj E1\einit.obj E1\ececil.obj E1\evisib.obj 
  E1\enames.obj E1\eskelet.obj E1\eplug.obj E1\esize.obj E1\epoly.obj 
  E1\eref.obj E1\eoption.obj C31\Cobj31.lib C30\Cobj30.lib C29\Cobj29.lib 
  C28\Cobj28.lib C27\Cobj27.lib C26\Cobj26.lib C25\Cobj25.lib C24\Cobj24.lib 
  C23\Cobj23.lib C22\Cobj22.lib C21\Cobj21.lib C20\Cobj20.lib C19\Cobj19.lib 
  C18\Cobj18.lib C17\Cobj17.lib C16\Cobj16.lib C15\Cobj15.lib C14\Cobj14.lib 
  C13\Cobj13.lib C12\Cobj12.lib C11\Cobj11.lib C10\Cobj10.lib C9\Cobj9.lib 
  C8\Cobj8.lib C7\Cobj7.lib C6\Cobj6.lib C5\Cobj5.lib C4\Cobj4.lib 
  C3\Cobj3.lib C2\Cobj2.lib C1\Cobj1.lib 
  finalized.lib(econsole.obj) : error LNK2001: unresolved external symbol __iob_func
  finalized.lib(console.obj) : error LNK2001: unresolved external symbol __iob_func
  finalized.lib(file.obj) : error LNK2001: unresolved external symbol __iob_func
  finalized.lib(main.obj) : error LNK2001: unresolved external symbol __iob_func
  finalized.lib(except.obj) : error LNK2001: unresolved external symbol __iob_func
  finalized.lib(sig.obj) : error LNK2001: unresolved external symbol __iob_func
  finalized.lib(option.obj) : error LNK2001: unresolved external symbol __iob_func
  finalized.lib(main.obj) : error LNK2019: unresolved external symbol _set_output_format referenced in function eif_rtinit
  finalized.lib(run_idr.obj) : error LNK2001: unresolved external symbol sprintf
  finalized.lib(except.obj) : error LNK2001: unresolved external symbol sprintf
  finalized.lib(out.obj) : error LNK2001: unresolved external symbol sprintf
  finalized.lib(file.obj) : error LNK2001: unresolved external symbol sprintf
  finalized.lib(store.obj) : error LNK2001: unresolved external symbol sprintf
  finalized.lib(econsole.obj) : error LNK2019: unresolved external symbol vfprintf referenced in function print_err_msg
  finalized.lib(file.obj) : error LNK2019: unresolved external symbol fscanf referenced in function rt_swallow_nl
  finalized.lib(retrieve.obj) : error LNK2019: unresolved external symbol sscanf referenced in function iread_header_new
  finalized.lib(run_idr.obj) : error LNK2001: unresolved external symbol sscanf
  my_wel_application_1.exe : fatal error LNK1120: 6 unresolved externals
  NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64\link.EXE"' : return code '0x460'
  Stop.
  
• Code coverage (gcov) failing when C Functions used in a C++ app

  I have a C++ app where I use some C functions. I have declared those C functions inside extern "C" {}; And it is compiling and working just fine. I am using 'gcc' for compiling the C code, and using 'g++' for linking that object with C++ object.

  GCOV fails by throwing me the following error:

  hidden symbol `__gcov_init' in /usr/lib/gcc/x86_64-linux-gnu/5/libgcov.a(_gcov.o) is referenced by DSO
  /usr/bin/ld: final link failed: Bad value
  collect2: error: ld returned 1 exit status
  

  I have no idea as this is new to me combining C and C++ code. Any one have idea why "gcov" failing with linking stage. If I disable those "C" functions in my app then it "gcov" is not giving me that error.

  C Functions I am using just initialising a struct which has function pointers in it with some functions.

  Any help is really appreciated.

  Thanks
• C++: for loop doesn't stop when compiled using MinGW64

  I had been compiling my C++ programs on my Linux but recently I had to make my C++ program compatible with Windows. I then downloaded MinGW64 from here and it compiles my code successfully. However, I encountered a strange forloop error. This is my loop:

  for (int i = 0; i < S; i++) {
      std::cout << "S = " << S << std::endl;
      std::cout << "index i = " << i << std::endl;
      std::cout << "comparing S and i: " << (i < S) << "; expect True" << std::endl; }
  

  and I have S = 2000. However, this is the print out that I got after i reaches 1999:

  S = 2000
  index i = 2000
  comparing S and i: 0; expect True
  

  The for loop just doesn't stop. I have replaced S in the forloop with hardcoded 2000 but the for loop still doesn't stop. The same program works on Ubuntu or Mac. Is this a known issue?
• MINGW64 cannot find reference to libcrypt

  I have problem with building my C++ project using CLion, MINGw64. So this is the problem I cannot handle with ._. Everything works on Linux but on Win10 I have this log:

  libBiblioteka.a(Rent.cpp.obj): In function `boost::uuids::detail::random_provider_base::random_provider_base()':
  C:/msys64/mingw64/include/boost/uuid/detail/random_provider_bcrypt.ipp:40: undefined reference to `BCryptOpenAlgorithmProvider'
  libBiblioteka.a(Rent.cpp.obj): In function `boost::uuids::detail::random_provider_base::get_random_bytes(void*, unsigned long long)':
  C:/msys64/mingw64/include/boost/uuid/detail/random_provider_bcrypt.ipp:76: undefined reference to `BCryptGenRandom'
  libBiblioteka.a(Rent.cpp.obj): In function `boost::uuids::detail::random_provider_base::destroy()':
  C:/msys64/mingw64/include/boost/uuid/detail/random_provider_bcrypt.ipp:93: undefined reference to `BCryptCloseAlgorithmProvider'
  collect2.exe: error: ld returned 1 exit status
  

  I have read these references are unavaiable on win10. But there is an question: Is there any way to workaround this?
• Problem cloning git remote repository in LAN network

  My colleague has Windows 7 and I have Windows 10. We have both tried to clone from remote LAN repository using MINGW64. My colleague succeeded but something seems to be wrong when I'm doing it. I get the following error from MINGW64:

  Does anyone know how I can solve this?