make[2]: Entering directory '/usr/src/RPM/BUILD/cups-filters-1.28.17'
loongarch64-alt-linux-g++ -DHAVE_CONFIG_H -I.    -std=c++0x  -D_PPD_DEPRECATED=""    -pipe -frecord-gcc-switches -Wall -g -O2 -flto=auto -Wall  -D_GNU_SOURCE -c -o filter/pdftopdf/pdftopdf-p
dftopdf_processor.o `test -f 'filter/pdftopdf/pdftopdf_processor.cc' || echo './'`filter/pdftopdf/pdftopdf_processor.cc
In file included from /usr/include/qpdf/Buffer.hh:26,
                 from /usr/include/qpdf/QPDF.hh:38,
                 from filter/pdftopdf/qpdf_pdftopdf_processor.h:5,
                 from filter/pdftopdf/pdftopdf_processor.cc:2:
/usr/include/qpdf/PointerHolder.hh:31:3: warning: #warning "POINTERHOLDER_TRANSITION is not defined -- see qpdf/PointerHolder.hh" [-Wcpp]
   31 | # warning "POINTERHOLDER_TRANSITION is not defined -- see qpdf/PointerHolder.hh"
      |   ^~~~~~~
/usr/include/qpdf/QPDF.hh:1569:36: error: 'std::string_view' has not been declared
 1569 |     void linearizationWarning(std::string_view);
      |                                    ^~~~~~~~~~~
make[2]: *** [Makefile:4226: filter/pdftopdf/pdftopdf-pdftopdf_processor.o] Error 1