Remove style files in src dir while running cmake

  set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel." FORCE)

endif(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CXX_FLAGS)

foreach(STYLE_FILE style_angle.h style_atom.h style_body.h style_bond.h style_command.h style_compute.h style_dihedral.h style_dump.h

             style_fix.h style_improper.h style_integrate.h style_kspace.h style_minimize.h style_nbin.h style_npair.h style_nstencil.h

             style_ntopo.h style_pair.h style_reader.h style_region.h)

  if(EXISTS ${LAMMPS_SOURCE_DIR}/${STYLE_FILE})

    message(FATAL_ERROR "There is a ${STYLE_FILE} in ${LAMMPS_SOURCE_DIR}, please clean up the source directory first")

# remove any style headers in the src dir

file(GLOB SRC_STYLE_FILES ${LAMMPS_SOURCE_DIR}/style_*.h)

if(SRC_STYLE_FILES)

  file(REMOVE ${SRC_STYLE_FILES})

endif()

endforeach()

enable_language(CXX)