root@Note:/home/bruno# LANG=C apt-get install libpng12-dev:i386
Reading package lists... Done
Building dependency tree
Reading state information... Done
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:
 libpng12-dev:i386 : Depends: libpng12-0:i386 (= 1.2.49-4) but it is not going to be installed
                     Depends: zlib1g-dev:i386 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.




root@Note:/home/bruno# LANG=C apt-get install libc-dev:i386
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'libc6-dev:i386' instead of 'libc-dev:i386'
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:
 libc6-dev:i386 : Depends: libc6:i386 (= 2.17-7) but it is not going to be installed
                  Depends: linux-libc-dev:i386 but it is not going to be installed
                  Recommends: gcc:i386 but it is not going to be installed or
                              c-compiler:i386
E: Unable to correct problems, you have held broken packages.