add code to create lmpinstalledpkgs.h file with cmake

include_directories(${LAMMPS_SOURCE_DIR})

include_directories(${LAMMPS_STYLE_HEADERS_DIR})

######################################

# Generate lmpinstalledpkgs.h

######################################

set(temp "const char * LAMMPS_NS::LAMMPS::installed_packages[] =  {\n")

foreach(PKG ${DEFAULT_PACKAGES} ${ACCEL_PACKAGES} ${OTHER_PACKAGES})

    if(PKG_${PKG})

        set(temp "${temp}  \"${PKG}\",\n")

    endif()

endforeach()

set(temp "${temp}  NULL\n};\n\n")

message(STATUS "Generating lmpinstalledpkgs.h...")

file(WRITE "${LAMMPS_STYLE_HEADERS_DIR}/lmpinstalledpkgs.h.tmp" "${temp}" )

execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different "${LAMMPS_STYLE_HEADERS_DIR}/lmpinstalledpkgs.h.tmp" "${LAMMPS_STYLE_HEADERS_DIR}/lmpinstalledpkgs.h")

###########################################

# Actually add executable and lib to build

############################################