message: fixing bash splitting
diff: @@ -239,7 +239,7 @@ build_cpp(){
  export ARROW_HOME=${BUILD_PATH}/arrow/install
  cmake -DPYCYLON_BUILD=${PYTHON_BUILD} -DCMAKE_BUILD_TYPE=${BUILD_MODE} \
  -DCYLON_WITH_TEST=${RUN_CPP_TESTS} $CPPLINT_CMD $INSTALL_CMD \
  - ${CMAKE_FLAGS} \
  + "${CMAKE_FLAGS}" \
  ${SOURCE_DIR} || exit 1
  make -j ${MAKE_JOBS} || exit 1
  install_libs
  @@ -280,7 +280,7 @@ build_cpp_with_custom_arrow(){
  -DCYLON_WITH_TEST=${RUN_CPP_TESTS} $CPPLINT_CMD $INSTALL_CMD \
  -DARROW_BUILD_TYPE="CUSTOM" -DARROW_LIB_DIR=${ARROW_LIB} -DARROW_INCLUDE_DIR=${ARROW_INC} \
  -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON \
  - ${CMAKE_FLAGS} \
  + "${CMAKE_FLAGS}" \
  ${SOURCE_DIR} \
  || exit 1
  make -j ${MAKE_JOBS} || exit 1
  @@ -320,7 +320,7 @@ build_cpp_conda(){
  -DCYLON_WITH_TEST=${RUN_CPP_TESTS} -DCMAKE_INSTALL_PREFIX=${INSTALL_PATH} \
  -DARROW_BUILD_TYPE="SYSTEM" -DARROW_LIB_DIR=${ARROW_LIB} -DARROW_INCLUDE_DIR=${ARROW_INC} \
  -DGCYLON_BUILD=${GCYLON_BUILD} \
  - ${CMAKE_FLAGS} \
  + "${CMAKE_FLAGS}"\
  ${SOURCE_DIR} \
  || exit 1
  make -j ${MAKE_JOBS} || exit 1
  @@ -344,7 +344,7 @@ build_gcylon(){
  mkdir -p ${BUILD_PATH}
  pushd ${BUILD_PATH} || exit 1
  cmake -DCMAKE_BUILD_TYPE=${BUILD_MODE} -DCYLON_WITH_TEST=${RUN_CPP_TESTS} -DCMAKE_INSTALL_PREFIX=${INSTALL_PATH} \
  - -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON -DGCYLON_BUILD=${GCYLON_BUILD} ${CMAKE_FLAGS} ${SOURCE_DIR} \
  + -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON -DGCYLON_BUILD=${GCYLON_BUILD} "${CMAKE_FLAGS}" ${SOURCE_DIR} \
  || exit 1
  make -j ${MAKE_JOBS} || exit 1
  printf "GCylon CPP Built Successfully!"
  