restore SRB2_SDL2_EXE_NAME

CMakeLists.txt

@@ -126,6 +126,9 @@ endif()
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
 set(CMAKE_PDB_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
 
+# Set EXE names so the assets CMakeLists can refer to its target
+set(SRB2_SDL2_EXE_NAME srb2kart CACHE STRING "Executable binary output name")
+
 include_directories(${CMAKE_CURRENT_BINARY_DIR}/src)
 
 add_subdirectory(src)