* remove static linking for libgcc

* fix clang warnings

CMakeLists.txt

@@ -70,18 +70,12 @@ if (WIN32)
 	set(CMAKE_SHARED_LIBRARY_PREFIX "") 
 
 	if(MINGW)
-		get_filename_component(MINGW_PATH ${CMAKE_CXX_COMPILER} PATH )
-		
-		#link to libgcc_s_*.dll statically
-		set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libgcc -static-libstdc++")
-		set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libgcc -static-libstdc++")
-		
-		#copy libwinpthread-*.dll to VCMI location
-		set(dep_files ${dep_files} "${MINGW_PATH}/libwinpthread-*.dll") 
-		
-		#copy libgcc_s_*.dll and libstdc++-*.dll to VCMI location, because vanilla Qt5 build with dynamic linking
-		set(dep_files ${dep_files} "${MINGW_PATH}/libgcc_s_*.dll") 
-		set(dep_files ${dep_files} "${MINGW_PATH}/libstdc++-*.dll") 
+		get_filename_component(MINGW_BIN_PATH ${CMAKE_CXX_COMPILER} PATH )
+
+		#copy libwinpthread-*.dll, libgcc_s_*.dll and libstdc++-*.dll to VCMI location
+		set(dep_files ${dep_files} "${MINGW_BIN_PATH}/libwinpthread-*.dll") 
+		set(dep_files ${dep_files} "${MINGW_BIN_PATH}/libgcc_s_*.dll") 
+		set(dep_files ${dep_files} "${MINGW_BIN_PATH}/libstdc++-*.dll") 
 	endif()
 endif()
 
@@ -144,7 +138,7 @@ endif()
 
 if(CMAKE_COMPILER_IS_GNUCXX OR NOT WIN32) #so far all *nix compilers support such parameters
 	if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
-		set(CLANG_SPECIFIC_FLAGS "-Wno-mismatched-tags")
+		set(CLANG_SPECIFIC_FLAGS "-Wno-mismatched-tags -Wno-unknown-warning-option")
 	endif()
 
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x -Wall -Wextra -Wpointer-arith -Wno-strict-aliasing -Wno-switch -Wno-sign-compare -Wno-unused-local-typedefs  -Wno-unused-parameter -Wuninitialized -Wno-overloaded-virtual -Wno-type-limits ${CLANG_SPECIFIC_FLAGS}")