Fix linux|mingw shared|static build

btgui/Gwen/Macros.h

@@ -17,7 +17,9 @@
 
 #ifdef _WIN32
 
-	#define NOMINMAX
+	#ifndef NOMINMAX
+        #define NOMINMAX
+        #endif
 	#include <windows.h>
 
 	#define GwenUtil_VSNPrintFSafe( _DstBuf, _DstSize, _MaxCount, _Format, _ArgList ) vsnprintf_s( _DstBuf, _DstSize, _MaxCount, _Format, _ArgList )
@@ -79,4 +81,4 @@ namespace Gwen
 	}
 }
 
-#endif
+#endif

btgui/OpenGLWindow/CMakeLists.txt

@@ -38,4 +38,12 @@ ENDIF()
 
 
 ADD_LIBRARY(OpenGLWindow ${OpenGLWindow_SRCS} ${OpenGLWindow_HDRS})
+if (UNIX AND NOT APPLE)
+  target_link_libraries(OpenGLWindow X11)
+endif ()
 
+if (BUILD_SHARED_LIBS)
+  target_link_libraries(OpenGLWindow Bullet3Common)
+endif()
+
+target_link_libraries(OpenGLWindow ${OPENGL_gl_LIBRARY})