fix windows compile

- fix build documentation
- fix plugin load methods
- fix symbol export for plugins

CMakeLists.txt

@@ -390,7 +390,7 @@ if( NOT "${CMAKE_INSTALL_PREFIX}" STREQUAL "${PROJECT_BINARY_DIR}" )
                 LIBRARY DESTINATION "${CMAKE_INSTALL_PREFIX}/bin")
         endif()
     endif()
-
+else()
     set(WIN_OUTPUT_RELEASE "/Release")
 endif()
 
@@ -400,7 +400,7 @@ install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/opencl"
 # avoid overwrite of user defined settings
 # install `config.txt`if file not exists in `${CMAKE_INSTALL_PREFIX}/bin`
 install(CODE " \
-    if(NOT EXISTS ${CMAKE_INSTALL_PREFIX}/bin/config.txt)\n   \
+    if(NOT EXISTS ${CMAKE_INSTALL_PREFIX}/bin${WIN_OUTPUT_RELEASE}/config.txt)\n   \
         file(INSTALL ${CMAKE_CURRENT_SOURCE_DIR}/config.txt   \
             DESTINATION ${CMAKE_INSTALL_PREFIX}/bin${WIN_OUTPUT_RELEASE})\n        \
     endif()"

WINCOMPILE.md

@@ -67,7 +67,7 @@
   set CMAKE_PREFIX_PATH=C:\xmr-stak-dep\hwloc;C:\xmr-stak-dep\libmicrohttpd;C:\xmr-stak-dep\openssl
   mkdir build
   cd build
-  cmake -G "Visual Studio 15 2017 Win64" -T v141,host=x64 ..
+  cmake -G "Visual Studio 15 2017 Win64" -T v140,host=x64 ..
   cmake --build . --config Release --target install
   cd bin\Release
   ```

backend/BackendConnector.cpp

@@ -63,7 +63,7 @@ std::vector<IBackend*>* BackendConnector::thread_starter(miner_work& pWork)
 	std::vector<IBackend*>* pvThreads = new std::vector<IBackend*>;
 
 #ifndef CONF_NO_CUDA
-	Plugin nvidiaPlugin("NVIDIA", "libxmrstak_cuda_backend");
+	Plugin nvidiaPlugin("NVIDIA", "xmrstak_cuda_backend");
 	std::vector<IBackend*>* nvidiaThreads = nvidiaPlugin.startBackend(static_cast<uint32_t>(pvThreads->size()), pWork);
 	pvThreads->insert(std::end(*pvThreads), std::begin(*nvidiaThreads), std::end(*nvidiaThreads));
 	if(nvidiaThreads->size() == 0)
@@ -71,7 +71,7 @@ std::vector<IBackend*>* BackendConnector::thread_starter(miner_work& pWork)
 #endif
 
 #ifndef CONF_NO_OPENCL
-	Plugin amdPlugin("AMD", "libxmrstak_opencl_backend");
+	Plugin amdPlugin("AMD", "xmrstak_opencl_backend");
 	std::vector<IBackend*>* amdThreads = amdPlugin.startBackend(static_cast<uint32_t>(pvThreads->size()), pWork);
 	pvThreads->insert(std::end(*pvThreads), std::begin(*amdThreads), std::end(*amdThreads));
 	if(amdThreads->size() == 0)

backend/Plugin.hpp

@@ -27,14 +27,14 @@ struct Plugin
 	{
 #ifdef WIN32
 		libBackend = LoadLibrary(TEXT((libName + ".dll").c_str()));
-		if (!libBackend)
+		if(!libBackend)
 		{
 			std::cerr << "WARNING: "<< m_backendName <<" cannot load backend library: " << (libName + ".dll") << std::endl;
 			return;
 		}
 #else
-		libBackend = dlopen((libName + ".so").c_str(), RTLD_LAZY);
-		if (!libBackend)
+		libBackend = dlopen((std::string("lib") + libName + ".so").c_str(), RTLD_LAZY);
+		if(!libBackend)
 		{
 			std::cerr << "WARNING: "<< m_backendName <<" cannot load backend library: " << dlerror() << std::endl;
 			return;
@@ -45,16 +45,16 @@ struct Plugin
 		fn_starterBackend = (starterBackend_t) GetProcAddress(libBackend, "xmrstak_start_backend");
 		if (!fn_starterBackend)
 		{
-			std::cerr << "WARNING: backend plugin " << libName << " contains no entry 'xmrstak_start_backend'" << std::endl;
+			std::cerr << "WARNING: backend plugin " << libName << " contains no entry 'xmrstak_start_backend': " <<GetLastError()<< std::endl;
 		}
 #else
 		// reset last error
 		dlerror();
 		fn_starterBackend = (starterBackend_t) dlsym(libBackend, "xmrstak_start_backend");
 		const char* dlsym_error = dlerror();
-		if (dlsym_error)
+		if(dlsym_error)
 		{
-			std::cerr << "WARNING: backend plugin " << libName << " contains no entry 'xmrstak_start_backend'" << std::endl;
+			std::cerr << "WARNING: backend plugin " << libName << " contains no entry 'xmrstak_start_backend': " << dlsym_error << std::endl;
 		}
 #endif
 	}

backend/amd/minethd.cpp

@@ -60,11 +60,15 @@ minethd::minethd(miner_work& pWork, size_t iNo, GpuContext* ctx)
 	oWorkThd = std::thread(&minethd::work_main, this);
 }
 
-extern "C"  std::vector<IBackend*>* xmrstak_start_backend(uint32_t threadOffset, miner_work& pWork)
+extern "C"  {
+#ifdef WIN32
+__declspec(dllexport) 
+#endif
+std::vector<IBackend*>* xmrstak_start_backend(uint32_t threadOffset, miner_work& pWork)
 {
 	return amd::minethd::thread_starter(threadOffset, pWork);
 }
-
+} // extern "C"
 
 bool minethd::init_gpus()
 {

backend/nvidia/autoAdjust.hpp

@@ -61,7 +61,7 @@ public:
 #endif
             if( cuda_get_deviceinfo(&ctx) != 1 )
             {
-                printer::inst()->print_msg(L0, "Setup failed for GPU %d. Exitting.\n", cfg.id);
+                printer::inst()->print_msg(L0, "Setup failed for GPU %d. Exitting.\n", i);
                 std::exit(0);
             }
             nvidCtxVec.push_back(ctx);

backend/nvidia/minethd.cpp

@@ -105,10 +105,16 @@ bool minethd::self_test()
 }
 
 
-extern "C" std::vector<IBackend*>* xmrstak_start_backend(uint32_t threadOffset, miner_work& pWork)
+extern "C"
+{
+#ifdef WIN32
+__declspec(dllexport)
+#endif
+std::vector<IBackend*>* xmrstak_start_backend(uint32_t threadOffset, miner_work& pWork)
 {
 	return nvidia::minethd::thread_starter(threadOffset, pWork);
 }
+} // extern "C"
 
 std::vector<IBackend*>* minethd::thread_starter(uint32_t threadOffset, miner_work& pWork)
 {