[Bug bootstrap/118369] Multilib bootstrap on Debian 12 fails due to missing asm/errno.h

[doko at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118369

--- Comment #9 from Matthias Klose <doko at gcc dot gnu.org> ---
let's take that on irc, maybe quicker.

I've never used the approach to get the build deps from the gcc-12 package,
maybe try

  apt source gcc-12
  cd gcc-12-12*
  apt buil-dep .

or just

  apt build-dep gcc-12