[Bug libstdc++/61101] snprintf not part of std

["redi at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61101

--- Comment #17 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Maxime Boissonneault from comment #5)
> Basically, we started with the system GCC. We compiled GCC, GMP, MPFR,
> MPC_V, with that system GCC. Then, we uninstalled the system GCC and its
> libstdc++ and recompiled those with the GCC we had just compiled.

This sounds like a big waste of time.

(In reply to Maxime Boissonneault from comment #6)
> Here is our complete installation document : 
> https://docs.google.com/a/calculquebec.ca/document/d/
> 1hcddCXGnm6OgTwRxRDU2akb-AxKx2aursppLp2JPwWo/edit
> 
> It went :
> - System GCC compiled GCC 4.8.1
> system GCC was removed.

This step might have broken your system.

> - GCC 4.8.1 compiled GCC 4.8.2
> - GCC 4.8.2 compiled GCC 4.6.4
> 
> Each time we bootstrapped, so that in the end, I believe GCC 4.8.2 was
> compiled with 4.8.2, etc.

(In reply to Maxime Boissonneault from comment #15)
> The reason we bootstrap is to remove as many dependencies as possible on the
> OS-provided packages. We've been bitten in the past with updates of packages
> (even on CentOS6) that broke user's codes.

GCC should have almost no dependencies on system libraries, just libc.so
(although I note you've used --with-system-zlib, so that adds one dependency)

Installing GMP, MPFR and MPC instead of linking statically also adds avoidable
dependencies.