I've created those symlinks and now libgomp is failing :s
I hope gdc (for D2) gets included in gcc so I can simply download it from synaptic :D
On Ubuntu the symlink exists.I had similar problems on debian testing x86_64. Apparently some files have been moved and this causes those problems. For example, /usr/include/asm/errno.h is
now at /usr/include/x86_64-linux-gnu/asm/errno.h. Plain gcc failed to compile too.
I tried messing around with symlinks and environment variables but failed.
/usr/include/asm -> /usr/include/x86_64-linux-gnu/asm/