+++ This bug was initially created as a clone of Bug #169132 +++

A large class of kde applications have issues building properly on x86_64
because they have trouble finding qt (usually lib != lib64 assumptions, etc). 
The workaround is usually to either define env vars QTINC/QTLIB (or use
./configure --with-qt-includes/--with-qt-libraries) pointing to the right place.

A lot of duplicated/extra effort could be avoided if QTINC and QTLIB were
already (correctly) defined in /etc/profile.d/qt.(sh|csh), adding lines like
# Qt initialization script (sh)

if [ -z "$QTDIR" ] ; then
  QTDIR="`/usr/bin/pkg-config --variable=prefix qt-mt`"
  QTINC="`/usr/bin/pkg-config --variable=includedir qt-mt`"
  QTLIB="`/usr/bin/pkg-config --variable=libdir qt-mt`"

  if ! echo ${PATH} | /bin/grep -q $QTDIR/bin ; then
   PATH=${QTDIR}/bin:${PATH}
  fi

  export QTDIR QTINC QTLIB PATH
fi


# Qt initialization script (csh)

if ( $?QTDIR ) then
   exit
endif

setenv QTDIR `/usr/bin/pkg-config --variable=prefix qt-mt` 
setenv QTINC `/usr/bin/pkg-config --variable=includedir qt-mt` 
setenv QTLIB `/usr/bin/pkg-config --variable=libdir qt-mt` 

if ( "${path}" !~ *$QTDIR/bin* ) then
   set path = ( $QTDIR/bin $path )
endif