Version:            (using KDE Devel)
Installed from:    Compiled sources
Compiler:          gcc 3.3.1 
OS:          Linux

Reported on mailing list a couple months ago when the problem first appeared - no useful response, and no change to the situation since then.  Just your standard 'make -f Makefile.cvs; ./configure --enable-debug=full --prefix=$KDEDIR; make':

if /bin/sh ../../../libtool --silent --mode=compile gcc -s -DHAVE_CONFIG_H -I. -I. -I../../.. -I../../../dcop -I../../../kio/kssl -I../../.. -I../../../kio -I../../../kfile -I../../../dcop -I../../../libltdl -I../../../kdefx -I../../../kdecore -I../../../kdeui -I../../../kio -I../../../kio/kio -I../../../kio/kfile -I../../.. -I/opt/qt-copy/include -I/usr/X11R6/include -I/opt/kde-cvs/include   -DQT_THREAD_SUPPORT  -D_REENTRANT  -ansi -W -Wall -Wchar-subscripts -Wshadow -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -g3 -fno-inline  -O2 -mcpu=i686 -Wformat-security -Wmissing-format-attribute -MT cups-util.lo -MD -MP -MF ".deps/cups-util.Tpo" \
  -c -o cups-util.lo `test -f 'cups-util.c' || echo './'`cups-util.c; \
then mv ".deps/cups-util.Tpo" ".deps/cups-util.Plo"; \
else rm -f ".deps/cups-util.Tpo"; exit 1; \
fi
cups-util.c:18: warning: no previous prototype for `cupsGetConf'
cups-util.c:221: warning: no previous prototype for `cupsPutConf'
cups-util.c: In function `cups_local_auth':
cups-util.c:445: error: union has no member named `sin_addr'
make[4]: *** [cups-util.lo] Error 1
make[4]: Leaving directory `/home/sigthor/compile/kdelibs/kdeprint/cups/cupsdconf2'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/home/sigthor/compile/kdelibs/kdeprint/cups'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/sigthor/compile/kdelibs/kdeprint'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/sigthor/compile/kdelibs'
make: *** [all] Error 2