message: Simplify generating doxygen files
diff: ARCH=$( uname )
  DISK_MIN=20
  TIME_BEGIN=$( date -u +%s )
  + DOXYGEN=false #set to true to build docs
  txtbld=$(tput bold)
  bldred=${txtbld}$(tput setaf 1)
  $CMAKE -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} -DCMAKE_CXX_COMPILER=${CXX_COMPILER} \
  -DCMAKE_C_COMPILER=${C_COMPILER} -DWASM_ROOT=${WASM_ROOT} \
  -DOPENSSL_ROOT_DIR=${OPENSSL_ROOT_DIR} -DBUILD_MONGO_DB_PLUGIN=true \
  + -DBUILD_DOXYGEN=${DOXYGEN} \
  ..
  if [ $? -ne 0 ]; then
  