Fix build of Logger.cpp with an unpatched version of gcc on Windows.

src/libtomahawk/utils/Logger.cpp

@@ -188,7 +188,7 @@ setupLogfile( QFile& f )
         }
     }
 
-#ifdef _WIN32
+#ifdef OFSTREAM_CAN_OPEN_WCHAR_FILE_NAMES
     // this is not supported in upstream libstdc++ as shipped with GCC
     // GCC needs the patch from https://gcc.gnu.org/ml/libstdc++/2011-06/msg00066.html applied
     // we could create a CMake check like the one for taglib, but I don't care right now :P

src/tomahawk/CMakeLists.win32.cmake

@@ -1,5 +1,5 @@
-ADD_DEFINITIONS( /DNOMINMAX )
-ADD_DEFINITIONS( /DWIN32_LEAN_AND_MEAN )
+ADD_DEFINITIONS( -DNOMINMAX )
+ADD_DEFINITIONS( -DWIN32_LEAN_AND_MEAN )
 ADD_DEFINITIONS( -static-libgcc )
 ADD_DEFINITIONS( -DUNICODE )
 
@@ -21,3 +21,13 @@ SET( OS_SPECIFIC_LINK_LIBRARIES
 if(QTSPARKLE_FOUND)
     list(APPEND OS_SPECIFIC_LINK_LIBRARIES ${QTSPARKLE_LIBRARIES})
 endif()
+
+
+include(CheckCXXSourceCompiles)
+
+check_cxx_source_compiles( "#include <fstream>
+                            int main(){
+                                ofstream stream(L\"Test\");
+                                return 0;
+                            }"
+                            OFSTREAM_CAN_OPEN_WCHAR_FILE_NAMES)

src/tomahawk/Config.h.in

@@ -27,4 +27,6 @@
 #cmakedefine HAVE_VLC_ALBUMARTIST
 #cmakedefine HAVE_X11
 
+#cmakedefine OFSTREAM_CAN_OPEN_WCHAR_FILE_NAMES
+
 #endif // CONFIG_H_IN