Content of RPM cups-devel-1.4.4-3.3.7.x86_64.rpm :
/usr/include/cups
/usr/include/cups/adminutil.h
/usr/include/cups/array.h
/usr/include/cups/backend.h
/usr/include/cups/cgi.h
/usr/include/cups/cups.h
/usr/include/cups/dir.h
/usr/include/cups/driver.h
/usr/include/cups/file.h
/usr/include/cups/help-index.h
/usr/include/cups/http.h
/usr/include/cups/image.h
/usr/include/cups/ipp.h
/usr/include/cups/language.h
/usr/include/cups/mime.h
/usr/include/cups/ppd.h
/usr/include/cups/ppdc.h
/usr/include/cups/raster.h
/usr/include/cups/sidechannel.h
/usr/include/cups/transcode.h
/usr/include/cups/versioning.h
/usr/lib64/libcups.so
/usr/lib64/libcupscgi.so
/usr/lib64/libcupsdriver.so
/usr/lib64/libcupsimage.so
/usr/lib64/libcupsmime.so
/usr/lib64/libcupsppdc.so
/usr/share/cups/ppdc
/usr/share/cups/ppdc/epson.h
/usr/share/cups/ppdc/escp.h
/usr/share/cups/ppdc/font.defs
/usr/share/cups/ppdc/hp.h
/usr/share/cups/ppdc/label.h
/usr/share/cups/ppdc/media.defs
/usr/share/cups/ppdc/pcl.h
/usr/share/cups/ppdc/raster.defs