diff --git a/code/CMakeModules/PCHSupport.cmake b/code/CMakeModules/PCHSupport.cmake
index f56626da1..36d031f10 100644
--- a/code/CMakeModules/PCHSupport.cmake
+++ b/code/CMakeModules/PCHSupport.cmake
@@ -305,8 +305,9 @@ MACRO(PCH_SET_COMPILE_COMMAND _inputcpp _compile_FLAGS)
   ENDIF()
 
   IF(MSVC)
-    GET_PDB_FILENAME(PDB_FILE ${_PCH_current_target})
-    SET(PCH_COMMAND ${CMAKE_CXX_COMPILER} ${pchsupport_compiler_cxx_arg1} ${_compile_FLAGS} /Yc /Fp"${PCH_OUTPUT}" ${_inputcpp} /Fd"${PDB_FILE}" /c /Fo"${PCH_OUTPUT}.obj")
+    GET_PDB_FILENAME(_PDB_FILE ${_PCH_current_target})
+    SET(PCH_COMMAND ${CMAKE_CXX_COMPILER} ${pchsupport_compiler_cxx_arg1} ${_compile_FLAGS} /Yc /Fp"${PCH_OUTPUT}" ${_inputcpp} /Fd"${_PDB_FILE}" /c /Fo"${PCH_OUTPUT}.obj")
+
     # Ninja PCH Support
     # http://public.kitware.com/pipermail/cmake-developers/2012-March/003653.html
     SET_SOURCE_FILES_PROPERTIES(${_inputcpp} PROPERTIES OBJECT_OUTPUTS "${PCH_OUTPUT}.obj")
diff --git a/code/CMakeModules/nel.cmake b/code/CMakeModules/nel.cmake
index 88c1a8538..3c80758bf 100644
--- a/code/CMakeModules/nel.cmake
+++ b/code/CMakeModules/nel.cmake
@@ -434,6 +434,11 @@ MACRO(NL_SETUP_BUILD)
     MESSAGE(STATUS "Generating NMake project")
   ENDIF()
 
+  IF(CMAKE_GENERATOR MATCHES "Ninja")
+    SET(NINJA ON)
+    MESSAGE(STATUS "Generating Ninja project")
+  ENDIF()
+
   # If target and host CPU are the same
   IF("${HOST_CPU}" STREQUAL "${TARGET_CPU}" AND NOT CMAKE_CROSSCOMPILING)
     # x86-compatible CPU
@@ -794,7 +799,7 @@ MACRO(NL_SETUP_BUILD)
 
               ADD_PLATFORM_FLAGS("${XARCH}-isysroot${CMAKE_IOS_SYSROOT}")
               ADD_PLATFORM_FLAGS("${XARCH}-miphoneos-version-min=${IOS_VERSION}")
-              SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} ${XARCH}-Wl,-iphoneos_version_min,${IOS_VERSION}")
+              ADD_PLATFORM_LINKFLAGS("${XARCH}-Wl,-iphoneos_version_min,${IOS_VERSION}")
             ENDIF()
 
             IF(TARGET_ARMV7)
@@ -804,7 +809,7 @@ MACRO(NL_SETUP_BUILD)
 
               ADD_PLATFORM_FLAGS("${XARCH}-isysroot${CMAKE_IOS_SYSROOT}")
               ADD_PLATFORM_FLAGS("${XARCH}-miphoneos-version-min=${IOS_VERSION}")
-              SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} ${XARCH}-Wl,-iphoneos_version_min,${IOS_VERSION}")
+              ADD_PLATFORM_LINKFLAGS("${XARCH}-Wl,-iphoneos_version_min,${IOS_VERSION}")
             ENDIF()
 
             IF(TARGET_ARMV6)
@@ -814,7 +819,7 @@ MACRO(NL_SETUP_BUILD)
 
               ADD_PLATFORM_FLAGS("${XARCH}-isysroot${CMAKE_IOS_SYSROOT}")
               ADD_PLATFORM_FLAGS("${XARCH}-miphoneos-version-min=${IOS_VERSION}")
-              SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} ${XARCH}-Wl,-iphoneos_version_min,${IOS_VERSION}")
+              ADD_PLATFORM_LINKFLAGS("${XARCH}-Wl,-iphoneos_version_min,${IOS_VERSION}")
             ENDIF()
           ENDIF()
 
@@ -826,7 +831,7 @@ MACRO(NL_SETUP_BUILD)
             ADD_PLATFORM_FLAGS("${XARCH}-isysroot${CMAKE_IOS_SIMULATOR_SYSROOT}")
             ADD_PLATFORM_FLAGS("${XARCH}-mios-simulator-version-min=${IOS_VERSION}")
             IF(CMAKE_OSX_DEPLOYMENT_TARGET)
-              SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} ${XARCH}-Wl,-macosx_version_min,${CMAKE_OSX_DEPLOYMENT_TARGET}")
+              ADD_PLATFORM_LINKFLAGS("${XARCH}-Wl,-macosx_version_min,${CMAKE_OSX_DEPLOYMENT_TARGET}")
             ENDIF()
           ENDIF()
         ELSE()
@@ -835,18 +840,18 @@ MACRO(NL_SETUP_BUILD)
             IF(CMAKE_OSX_DEPLOYMENT_TARGET VERSION_LESS "10.7")
               MESSAGE(FATAL_ERROR "Minimum target for OS X is 10.7 but you're using ${CMAKE_OSX_DEPLOYMENT_TARGET}")
             ENDIF()
-            SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -Wl,-macosx_version_min,${CMAKE_OSX_DEPLOYMENT_TARGET}")
+            ADD_PLATFORM_LINKFLAGS("-Wl,-macosx_version_min,${CMAKE_OSX_DEPLOYMENT_TARGET}")
           ENDIF()
         ENDIF()
 
         # use libc++ under OX X to be able to use new C++ features (and else it'll use GCC 4.2.1 STL)
         # minimum target is now OS X 10.7
-        ADD_PLATFORM_FLAGS("-stdlib=libc++")
-        
-        SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -Wl,-headerpad_max_install_names")
+        SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -stdlib=libc++")
+
+        ADD_PLATFORM_LINKFLAGS("-Wl,-headerpad_max_install_names")
 
         IF(HAVE_FLAG_SEARCH_PATHS_FIRST)
-          SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -Wl,-search_paths_first")
+          ADD_PLATFORM_LINKFLAGS("-Wl,-search_paths_first")
         ENDIF()
       ENDIF()
     ELSE()
@@ -860,7 +865,7 @@ MACRO(NL_SETUP_BUILD)
     ENDIF()
 
     # use c++0x standard to use std::unique_ptr and std::shared_ptr
-    ADD_PLATFORM_FLAGS("-std=c++0x")
+    SET(PLATFORM_CXXFLAGS "${PLATFORM_CXXFLAGS} -std=c++0x")
 
     ADD_PLATFORM_FLAGS("-D_REENTRANT")
 
@@ -876,12 +881,15 @@ MACRO(NL_SETUP_BUILD)
     ENDIF()
 
     IF(WITH_WARNINGS)
-      ADD_PLATFORM_FLAGS("-Wall -W -Wpointer-arith -Wsign-compare -Wno-deprecated-declarations -Wno-multichar -Wno-unused")
+      ADD_PLATFORM_FLAGS("-Wall -W")
     ELSE()
       # Check wrong formats in printf-like functions
       ADD_PLATFORM_FLAGS("-Wformat -Werror=format-security")
     ENDIF()
 
+    # never display these warnings because they are minor
+    ADD_PLATFORM_FLAGS("-Wno-unused-parameter")
+
     IF(ANDROID)
       ADD_PLATFORM_FLAGS("--sysroot=${PLATFORM_ROOT}")
       ADD_PLATFORM_FLAGS("-ffunction-sections -funwind-tables")
@@ -894,7 +902,7 @@ MACRO(NL_SETUP_BUILD)
 
         IF(TARGET_ARMV7)
           ADD_PLATFORM_FLAGS("-march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16")
-          SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -march=armv7-a -Wl,--fix-cortex-a8")
+          ADD_PLATFORM_LINKFLAGS("-march=armv7-a -Wl,--fix-cortex-a8")
         ELSEIF(TARGET_ARMV5)
           ADD_PLATFORM_FLAGS("-march=armv5te -mtune=xscale -msoft-float")
         ENDIF()
@@ -914,8 +922,8 @@ MACRO(NL_SETUP_BUILD)
         ADD_PLATFORM_FLAGS("-fpic -finline-functions -fmessage-length=0 -fno-inline-functions-called-once -fgcse-after-reload -frerun-cse-after-loop -frename-registers")
         SET(RELEASE_CFLAGS "${RELEASE_CFLAGS} -funswitch-loops -finline-limit=300")
       ENDIF()
-      SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -Wl,-z,noexecstack")
-      SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -L${PLATFORM_ROOT}/usr/lib")
+      ADD_PLATFORM_LINKFLAGS("-Wl,-z,noexecstack")
+      ADD_PLATFORM_LINKFLAGS("-L${PLATFORM_ROOT}/usr/lib")
     ENDIF()
 
     IF(APPLE)
@@ -932,13 +940,21 @@ MACRO(NL_SETUP_BUILD)
     # hardening
     ADD_PLATFORM_FLAGS("-fstack-protector --param=ssp-buffer-size=4")
 
+    # If -fstack-protector or -fstack-protector-all enabled, enable too new warnings and fix possible link problems
+    IF(WITH_WARNINGS)
+      ADD_PLATFORM_FLAGS("-Wstack-protector")
+    ENDIF()
+
+    # Fix undefined reference to `__stack_chk_fail' error
+    ADD_PLATFORM_LINKFLAGS("-lc")
+
     IF(NOT APPLE)
-      SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -Wl,--no-undefined -Wl,--as-needed")
+      ADD_PLATFORM_LINKFLAGS("-Wl,--no-undefined -Wl,--as-needed")
     ENDIF()
 
     IF(NOT APPLE)
       # hardening
-      SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now")
+      ADD_PLATFORM_LINKFLAGS("-Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now")
     ENDIF()
 
     IF(WITH_SYMBOLS)
diff --git a/code/nel/src/3d/driver/opengl/mac/cocoa_opengl_view.m b/code/nel/src/3d/driver/opengl/mac/cocoa_opengl_view.mm
similarity index 100%
rename from code/nel/src/3d/driver/opengl/mac/cocoa_opengl_view.m
rename to code/nel/src/3d/driver/opengl/mac/cocoa_opengl_view.mm
diff --git a/code/nel/src/gui/interface_expr.cpp b/code/nel/src/gui/interface_expr.cpp
index 9d13286a9..77d48906e 100644
--- a/code/nel/src/gui/interface_expr.cpp
+++ b/code/nel/src/gui/interface_expr.cpp
@@ -749,7 +749,7 @@ namespace NLGUI
 		std::string str;
 		for (;;)
 		{
-			if (expr == '\0')
+			if (*expr == '\0')
 			{
 				nlwarning("CInterfaceExprValue::evalString : end of buffer encountered in a string");
 				return NULL;
diff --git a/code/nel/src/misc/common.cpp b/code/nel/src/misc/common.cpp
index ca116d0f8..3f39ab86a 100644
--- a/code/nel/src/misc/common.cpp
+++ b/code/nel/src/misc/common.cpp
@@ -1493,7 +1493,7 @@ static bool openDocWithExtension (const std::string &document, const std::string
 		return true;
 	}
 #elif defined(NL_OS_MAC)
-	CFURLRef url = CFURLCreateWithBytes(NULL, (const UInt8 *)document, strlen(document), kCFStringEncodingUTF8, NULL);
+	CFURLRef url = CFURLCreateWithBytes(NULL, (const UInt8 *)document.c_str(), document.length(), kCFStringEncodingUTF8, NULL);
 
 	if (url)
 	{
@@ -1502,7 +1502,7 @@ static bool openDocWithExtension (const std::string &document, const std::string
 
 		if (res != 0)
 		{
-			nlwarning("LSOpenCFURLRef %s returned %d", document, (sint)res);
+			nlwarning("LSOpenCFURLRef %s returned %d", document.c_str(), (sint)res);
 			return false;
 		}
 
@@ -1510,7 +1510,7 @@ static bool openDocWithExtension (const std::string &document, const std::string
 	}
 	else
 	{
-		nlwarning("Unable to create URL from %s", document);
+		nlwarning("Unable to create URL from %s", document.c_str());
 		return false;
 	}
 #else
diff --git a/code/nel/src/net/sock.cpp b/code/nel/src/net/sock.cpp
index 77c707712..4a6b57e95 100644
--- a/code/nel/src/net/sock.cpp
+++ b/code/nel/src/net/sock.cpp
@@ -497,9 +497,9 @@ CSock::TSockResult CSock::receive( uint8 *buffer, uint32& len, bool throw_except
 	if ( _NonBlocking )
 	{
 		// Receive incoming message (only the received part)
-
 		TTicks before = CTime::getPerformanceTime();
-		len = ::recv( _Sock, (char*)buffer, len, 0 );
+
+		sint retLen = ::recv( _Sock, (char*)buffer, len, 0 );
 
 		//nlinfo ("CSock::receive(): NBM Received %d bytes to %d res: %d (%d)", realLen, _Sock, len, ERROR_NUM);
 
@@ -509,7 +509,8 @@ CSock::TSockResult CSock::receive( uint8 *buffer, uint32& len, bool throw_except
 		}
 
 		_MaxReceiveTime = max( (uint32)(CTime::ticksToSecond(CTime::getPerformanceTime()-before)*1000.0f), _MaxReceiveTime );
-		switch ( len )
+
+		switch (retLen)
 		{
 			// Graceful disconnection
 			case 0 :
@@ -546,12 +547,14 @@ CSock::TSockResult CSock::receive( uint8 *buffer, uint32& len, bool throw_except
 				}
 			}
 		}
+
+		len = (uint32)retLen;
 	}
 	else // Blocking Mode
 	{
 		// Receive incoming message, waiting until a complete message has arrived
 		uint total = 0;
-		uint brecvd;
+		sint brecvd;
 
 		while ( total < len )
 		{
diff --git a/code/ryzom/client/src/login_patch.h b/code/ryzom/client/src/login_patch.h
index 0daf83b46..2b108994d 100644
--- a/code/ryzom/client/src/login_patch.h
+++ b/code/ryzom/client/src/login_patch.h
@@ -34,6 +34,7 @@ class CPatchThread;
 class CCheckThread;
 class CScanDataThread;
 class CInstallThread;
+class CDownloadThread;
 
 
 // Useful for using an external downloader (BitTorrent) use of interface with CGameDownloader from client_background_rd.exe using as install program
diff --git a/code/ryzom/common/src/game_share/ring_session_manager_itf.h b/code/ryzom/common/src/game_share/ring_session_manager_itf.h
index 7dc9d5af3..832903ad1 100644
--- a/code/ryzom/common/src/game_share/ring_session_manager_itf.h
+++ b/code/ryzom/common/src/game_share/ring_session_manager_itf.h
@@ -1666,12 +1666,11 @@ namespace RSMGR
 			sf_shard28 = 1<<28,
 			sf_shard29 = 1<<29,
 			sf_shard30 = 1<<30,
-			sf_shard31 = 1<<31,
 
 			invalid_val,
 
 			/// Number of enumerated values
-			nb_enum_items = 32
+			nb_enum_items = 31
 		};
 
 
@@ -1709,7 +1708,6 @@ namespace RSMGR
 				NL_STRING_CONVERSION_TABLE_ENTRY(sf_shard28)
 				NL_STRING_CONVERSION_TABLE_ENTRY(sf_shard29)
 				NL_STRING_CONVERSION_TABLE_ENTRY(sf_shard30)
-				NL_STRING_CONVERSION_TABLE_ENTRY(sf_shard31)
 				NL_STRING_CONVERSION_TABLE_ENTRY(invalid_val)
 			};
 			static NLMISC::CStringConversion<TValues>
diff --git a/code/ryzom/common/src/game_share/utils.h b/code/ryzom/common/src/game_share/utils.h
index c4c0fe26f..2914f0dc8 100644
--- a/code/ryzom/common/src/game_share/utils.h
+++ b/code/ryzom/common/src/game_share/utils.h
@@ -76,7 +76,7 @@ inline ucstring capitalize(const ucstring & s)
 #define MACRO_CONCAT2(a,b) CONCAT(a,b)
 #define MACRO_TOTXT(a) #a
 #define MACRO_TOTXT2(a) TOTXT(a)
-#define __FILE_LINE__ __FILE__ ":"TOTXT2(__LINE__)":"
+#define __FILE_LINE__ __FILE__ ":" TOTXT2(__LINE__) ":"
 
 
 //-------------------------------------------------------------------------------------------------
diff --git a/code/ryzom/tools/leveldesign/georges_dll/georges_edit.cpp b/code/ryzom/tools/leveldesign/georges_dll/georges_edit.cpp
index 1860096aa..effc20681 100644
--- a/code/ryzom/tools/leveldesign/georges_dll/georges_edit.cpp
+++ b/code/ryzom/tools/leveldesign/georges_dll/georges_edit.cpp
@@ -920,39 +920,7 @@ LONG GetRegKey(HKEY key, LPCTSTR subkey, LPTSTR retdata)
 
 void CGeorgesEditApp::gotoURL (LPCTSTR url)
 {
-    char key[MAX_PATH + MAX_PATH];
-
-    // First try ShellExecute()
-    HINSTANCE result = ShellExecute(NULL, "open", url, NULL,NULL, SW_SHOW);
-
-    // If it failed, get the .htm regkey and lookup the program
-    if ((UINT)result <= HINSTANCE_ERROR) {
-
-        if (GetRegKey(HKEY_CLASSES_ROOT, ".htm", key) == ERROR_SUCCESS) 
-		{
-            lstrcat(key, "\\shell\\open\\command");
-
-            if (GetRegKey(HKEY_CLASSES_ROOT,key,key) == ERROR_SUCCESS) 
-			{
-                char *pos;
-                pos = strstr(key, "\"%1\"");
-                if (pos == NULL) 
-				{                     // No quotes found
-                    pos = strstr(key, "%1");       // Check for %1, without quotes 
-                    if (pos == NULL)                   // No parameter at all...
-                        pos = key+lstrlen(key)-1;
-                    else
-                        *pos = '\0';                   // Remove the parameter
-                }
-                else
-                    *pos = '\0';                       // Remove the parameter
-
-                lstrcat(pos, " ");
-                lstrcat(pos, url);
-                result = (HINSTANCE) WinExec(key, SW_SHOW);
-            }
-        }
-    }
+	NLMISC::openURL(tStrToUtf8(url));
 }
 
 void CGeorgesEditApp::WinHelp(DWORD dwData, UINT nCmd)