===> Building for pdf2djvu-0.9.18.2nb18
clang++ -pipe -Os -I/opt/pkg/include -I/opt/pkg/include/freetype2 -I/opt/pkg/include/nspr -I/opt/pkg/include/glib-2.0 -I/opt/pkg/include/gio-unix-2.0 -I/opt/pkg/lib/glib-2.0/include -DLDAP_DEPRECATED -Wall -Wempty-body -Werror=misleading-indentation -Werror=narrowing -Werror=overloaded-virtual -I/opt/pkg/include -I/opt/pkg/include/poppler -I/opt/pkg/include/GraphicsMagick  -DPNG_NO_ASSEMBLER_CODE -I/opt/pkg/include -I/opt/pkg/include/freetype2 -I/opt/pkg/include/nspr -I/opt/pkg/include/glib-2.0 -I/opt/pkg/include/gio-unix-2.0 -I/opt/pkg/lib/glib-2.0/include -DLDAP_DEPRECATED   -c -o config.o config.cc
clang++ -pipe -Os -I/opt/pkg/include -I/opt/pkg/include/freetype2 -I/opt/pkg/include/nspr -I/opt/pkg/include/glib-2.0 -I/opt/pkg/include/gio-unix-2.0 -I/opt/pkg/lib/glib-2.0/include -DLDAP_DEPRECATED -Wall -Wempty-body -Werror=misleading-indentation -Werror=narrowing -Werror=overloaded-virtual -I/opt/pkg/include -I/opt/pkg/include/poppler -I/opt/pkg/include/GraphicsMagick  -DPNG_NO_ASSEMBLER_CODE -I/opt/pkg/include -I/opt/pkg/include/freetype2 -I/opt/pkg/include/nspr -I/opt/pkg/include/glib-2.0 -I/opt/pkg/include/gio-unix-2.0 -I/opt/pkg/lib/glib-2.0/include -DLDAP_DEPRECATED   -c -o debug.o debug.cc
clang++ -pipe -Os -I/opt/pkg/include -I/opt/pkg/include/freetype2 -I/opt/pkg/include/nspr -I/opt/pkg/include/glib-2.0 -I/opt/pkg/include/gio-unix-2.0 -I/opt/pkg/lib/glib-2.0/include -DLDAP_DEPRECATED -Wall -Wempty-body -Werror=misleading-indentation -Werror=narrowing -Werror=overloaded-virtual -I/opt/pkg/include -I/opt/pkg/include/poppler -I/opt/pkg/include/GraphicsMagick  -DPNG_NO_ASSEMBLER_CODE -I/opt/pkg/include -I/opt/pkg/include/freetype2 -I/opt/pkg/include/nspr -I/opt/pkg/include/glib-2.0 -I/opt/pkg/include/gio-unix-2.0 -I/opt/pkg/lib/glib-2.0/include -DLDAP_DEPRECATED   -c -o djvu-outline.o djvu-outline.cc
tools/generate-paths-hh localedir /opt/pkg/share/locale djvulibre_bindir /opt/pkg/bin
clang++ -pipe -Os -I/opt/pkg/include -I/opt/pkg/include/freetype2 -I/opt/pkg/include/nspr -I/opt/pkg/include/glib-2.0 -I/opt/pkg/include/gio-unix-2.0 -I/opt/pkg/lib/glib-2.0/include -DLDAP_DEPRECATED -Wall -Wempty-body -Werror=misleading-indentation -Werror=narrowing -Werror=overloaded-virtual -I/opt/pkg/include -I/opt/pkg/include/poppler -I/opt/pkg/include/GraphicsMagick  -DPNG_NO_ASSEMBLER_CODE -I/opt/pkg/include -I/opt/pkg/include/freetype2 -I/opt/pkg/include/nspr -I/opt/pkg/include/glib-2.0 -I/opt/pkg/include/gio-unix-2.0 -I/opt/pkg/lib/glib-2.0/include -DLDAP_DEPRECATED   -c -o i18n.o i18n.cc
clang++ -pipe -Os -I/opt/pkg/include -I/opt/pkg/include/freetype2 -I/opt/pkg/include/nspr -I/opt/pkg/include/glib-2.0 -I/opt/pkg/include/gio-unix-2.0 -I/opt/pkg/lib/glib-2.0/include -DLDAP_DEPRECATED -Wall -Wempty-body -Werror=misleading-indentation -Werror=narrowing -Werror=overloaded-virtual -I/opt/pkg/include -I/opt/pkg/include/poppler -I/opt/pkg/include/GraphicsMagick  -DPNG_NO_ASSEMBLER_CODE -I/opt/pkg/include -I/opt/pkg/include/freetype2 -I/opt/pkg/include/nspr -I/opt/pkg/include/glib-2.0 -I/opt/pkg/include/gio-unix-2.0 -I/opt/pkg/lib/glib-2.0/include -DLDAP_DEPRECATED   -c -o image-filter.o image-filter.cc
In file included from image-filter.cc:15:
In file included from ./image-filter.hh:22:
In file included from ./pdf-backend.hh:32:
In file included from /Users/pbulk/build/print/pdf2djvu/work/.buildlink/include/poppler/PDFDoc.h:61:
In file included from /Users/pbulk/build/print/pdf2djvu/work/.buildlink/include/poppler/XRef.h:44:
In file included from /Users/pbulk/build/print/pdf2djvu/work/.buildlink/include/poppler/Object.h:44:
/Users/pbulk/build/print/pdf2djvu/work/.buildlink/include/poppler/goo/GooString.h:241:24: error: no member named 'starts_with' in 'std::string'
    using std::string::starts_with;
          ~~~~~~~~~~~~~^
/Users/pbulk/build/print/pdf2djvu/work/.buildlink/include/poppler/goo/GooString.h:244:24: error: no member named 'ends_with' in 'std::string'
    using std::string::ends_with;
          ~~~~~~~~~~~~~^
In file included from image-filter.cc:15:
In file included from ./image-filter.hh:22:
In file included from ./pdf-backend.hh:32:
In file included from /Users/pbulk/build/print/pdf2djvu/work/.buildlink/include/poppler/PDFDoc.h:61:
In file included from /Users/pbulk/build/print/pdf2djvu/work/.buildlink/include/poppler/XRef.h:44:
In file included from /Users/pbulk/build/print/pdf2djvu/work/.buildlink/include/poppler/Object.h:690:
/Users/pbulk/build/print/pdf2djvu/work/.buildlink/include/poppler/Stream.h:307:31: error: no template named 'span' in namespace 'std'
    virtual size_t write(std::span<unsigned char> data) = 0;
                         ~~~~~^
/Users/pbulk/build/print/pdf2djvu/work/.buildlink/include/poppler/Stream.h:328:23: error: no template named 'span' in namespace 'std'
    size_t write(std::span<unsigned char> data) override;
                 ~~~~~^
4 errors generated.
gmake: *** [<builtin>: image-filter.o] Error 1
*** Error code 2

Stop.
bmake[1]: stopped making "all" in /Volumes/data/jenkins/workspace/pkgsrc-macos-trunk-arm64/print/pdf2djvu
*** Error code 1

Stop.
bmake: stopped making "all" in /Volumes/data/jenkins/workspace/pkgsrc-macos-trunk-arm64/print/pdf2djvu