installer

Package libdb4.8++-dev is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Package libdb4.8-dev is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'libdb4.8-dev' has no installation candidate
E: Package 'libdb4.8++-dev' has no installation candidate