Comment 18 for bug 990982

The initial issue was not being able to build a 32-bit version of wine from source on a 64-bit computer because wine needed both libfreetype-dev package for i386 and amd64 flavour.

I followed http://wiki.winehq.org/BuildingBiarchWineOnUbuntu guide and it fully works, neither errors nor headaches ;)

But if I try to install libfreetype6-dev:i386, I still have to uninstall libfreetype6-dev (:amd64) among other packages :
alex@leon:~$ sudo apt-get install libfreetype6-dev:i386
[sudo] password for alex:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  gcc-4.9-base:i386 libc6:i386 libc6-dev:i386 libfreetype6:i386 libgcc1:i386
  libpng12-0:i386 libpng12-dev:i386 linux-libc-dev:i386 zlib1g:i386
  zlib1g-dev:i386
Suggested packages:
  glibc-doc:i386 locales:i386 manpages-dev:i386
Recommended packages:
  gcc:i386 c-compiler:i386
The following packages will be REMOVED:
  build-essential dkms g++ gcc libfontconfig1-dev libfreetype6-dev
  libpng12-dev virtualbox-dkms
The following NEW packages will be installed:
  gcc-4.9-base:i386 libc6:i386 libc6-dev:i386 libfreetype6:i386
  libfreetype6-dev:i386 libgcc1:i386 libpng12-0:i386 libpng12-dev:i386
  linux-libc-dev:i386 zlib1g:i386 zlib1g-dev:i386
0 upgraded, 11 newly installed, 8 to remove and 0 not upgraded.
Need to get 7,882 kB of archives.
After this operation, 17.4 MB of additional disk space will be used.
Do you want to continue? [Y/n] ^C

I just read https://wiki.ubuntu.com/MultiarchSpec and in the "Unresolved issues" section, there is a "Co-installable -dev packages " entry which means this bugs is normal since no one agreed on what to do in this case.
Maybe renaming this bug into "[Mutiarch] Find a way to co-install -dev packages" would better describe it.