In msw/graphics.cpp, you will need to edit this:
and change the abs to fabs...
void wxGDIPlusPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise ) { double sweepAngle = endAngle - startAngle ; if( abs(sweepAngle) >= 2*M_PI) { ...
and change the abs to fabs...
void wxGDIPlusPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise ) { double sweepAngle = endAngle - startAngle ; if( fabs(sweepAngle) >= 2*M_PI) { ...