Dependency problems in self-built packages

[Paavo Hartikainen <pahartik@sci.fi>]

This kind of error messages I have been getting when building Debian
packages from sources.  What have I done wrong when building the
library packages?  'ldd' output looks normal and the libraries seem to
work fine, but dependencies are missing from the packages I build.

dpkg-shlibdeps: warning: unknown output from ldd on
`debian/tmp/usr/bin/gif2png': ` libcpml.so => /usr/lib/libcpml.so
(0x0000020000244000)' dpkg-shlibdeps: warning: unknown output from ldd
on `debian/tmp/usr/bin/gif2png': ` libz.so => /usr/lib/libz.so
(0x0000020000500000)' dpkg-shlibdeps: warning: unknown output from ldd
on `debian/tmp/usr/bin/gif2png': ` libots.so => /usr/lib/libots.so
(0x000002000084c000)'

Looking inside the created binary package "gif2png_2.2.5-1_alpha.deb",
"DEBIAN/control" says "Depends: libc6.1 (>= 2.1.2-1), libpng2".  I
have read "Debian Packaging Manual" several times but I did not find
solution to this problem.

-- 
 "pienena   /  Paavo "Rainbow Rat" Hartikainen
  minusta  /  E-mail: pahartik@sci.fi
  tulee   /  URL: http://www.sci.fi/~pahartik/
  rotta" /  EFnet: pahartik at #Atari and #LionKing