On Sat, Sep 07, 2013 at 04:04:37PM +0530, Balamurugan wrote: > Do you mean there is no such package like libstdc++? That is correct, there is no package "libstdc++" > I have just ran the commands on a fresh install of Debian 7 (Wheezy) 64-bit system. > > root@debian:/home/user# apt-get install libstdc++ > Reading package lists... Done > Building dependency tree > Reading state information... Done > Note, selecting 'libstdc++6-4.4-doc' for regex 'libstdc+' [ Snipped list of packages ] > Note, selecting 'libstdc++6-4.4-dev' for regex 'libstdc+' As you can see from the above lines, as there is no exact match for "libstdc++", apt-get is using the string as a regex (regular expression, pattern to match against). The result is a list of packages that match the regex. In this case the pattern being matched against is "any string containing libstd, immediately followed by one or more c's". > _libstdc++6 is already the newest version._ Here, apt-get tells you the package libstdc++6, which matches the regex, is already at the latest version. > Some packages could not be installed. This may mean that you have > requested an impossible situation or if you are using the unstable ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > distribution that some required packages have not yet been created > or been moved out of Incoming. > The following information may help to resolve the situation: > > The following packages have unmet dependencies: > libstdc++6-4.6-dbg : Conflicts: libstdc++6-4.4-dbg but 4.4.7-2 is to be installed > libstdc++6-4.6-doc : Conflicts: libstdc++6-4.4-doc but 4.4.7-2 is to be installed > libstdc++6-4.7-dbg : Conflicts: libstdc++6-4.4-dbg but 4.4.7-2 is to be installed > Conflicts: libstdc++6-4.6-dbg but 4.6.3-14 is to be installed > libstdc++6-4.7-doc : Conflicts: libstdc++6-4.4-doc but 4.4.7-2 is to be installed > Conflicts: libstdc++6-4.6-doc but 4.6.3-14 is to be installed > E: Unable to correct problems, you have held broken packages. As you can see from the above list, you have selected mutually exclusive packages for installation. As apt-get can't resolve the situation automatically, it bails out and requires manual intervention to resolve the conflicts. Cheers, Tom -- Bachelors' wives and old maids' children are always perfect. -- Nicolas Chamfort
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