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Build Identifier: 20100617-1415 I've got Mingw/MSYS running on Windows 7 (64Bit) using gcc-4.5 and w32api-3.14. I had to get some more information out from starter.exe to debug an issue. Therfore, I manually uncommented //#define DEBUG_MONITOR in starter.cpp. After that, compiling the sources failed (it perfectly worked before my change). I got the following failures (shortened): $ make g++ -DUNICODE -c -o starter.o starter.cpp starter.cpp: In function 'int main()': starter.cpp:161:53: error: cannot convert 'const char*' to 'const WCHAR*' for argument '1' to 'void OutputDebugStringW(const WCHAR*)' ... It seemed to me like a UNICODE issue. Therefore I started VC2008 and created a "new project" to see what compiler directives they use when compiling with UNICODE support. Among others, they pass the following directives to the compiler: /D "_UNICODE" /D "UNICODE" Because of that, my conclusion is that the makefile for starter.exe is missing the following additional directive: _UNICODE (note the prefixed underscore). After having adjusted the makefile to CXXFLAGS = -DUNICODE -D_UNICODE The compilation errors were gone (and, according to my tests) starter.exe worked like a charm! As the fix is trivial, it could be worth the effort of doing it. Reproducible: Always Steps to Reproduce: 1. Prepare the environment described above 2. issue a 'make' in an msys console