CMake: Avoid including parser.c twice

Closes swig#2409

Author: jschueller

CMakeLists.txt

@@ -127,6 +127,7 @@ install (FILES ${CMAKE_CURRENT_BINARY_DIR}/swigwarn.swg DESTINATION ${SWIG_LIB})
 # ---------
 file (GLOB DOH_SOURCES ${SWIG_SOURCE_DIR}/DOH/*.c)
 file (GLOB CPARSE_SOURCES ${SWIG_SOURCE_DIR}/CParse/*.c)
+list (REMOVE_ITEM CPARSE_SOURCES ${SWIG_SOURCE_DIR}/CParse/parser.c)
 list (APPEND CPARSE_SOURCES)
 file (GLOB PREPROCESSOR_SOURCES ${SWIG_SOURCE_DIR}/Preprocessor/*.c)
 file (GLOB CORE_SOURCES ${SWIG_SOURCE_DIR}/Swig/*.c)