Re: [patch] Extend AC_PROG_CXX to check for standards conformance

[Miles Bader]

Roger Leigh <address@hidden> writes:
> However, if you look at the C++11 features like declspec, automatic
> type inference, array initialisers, delegate constructors,
> range-based for loops, lambdas, etc. these features can not be
> substituted for.  If you use them, you absolutely require a C++11
> compiler; there is no sane fallback.

That's not true for _every_ C++11 feature though.

E.g., I use std::thread, the std:: random classes if available,
otherwise I look for boost (etc).  I can use either std::unique_ptr or
std::auto_ptr (via a thin wrapper); the former is safer and better for
development, but the latter is good enough for running.

If you need C++11 features and don't have any compatibility fallbacks,
isn't following the autoconf language test in configure.ac by
"if not c++11 then AC_ERROR([BARF! Need a C++11 compiler!])"  good
enough?

-miles

-- 
In New York, most people don't have cars, so if you want to kill a person, you
have to take the subway to their house.  And sometimes on the way, the train
is delayed and you get impatient, so you have to kill someone on the subway.
  [George Carlin]