[CMake] detecting if c++11 available

[Todd Greer]

You might consider using code from Boost's config subsystem. There's a list of dozens of macros they define to set what features are available in what compilers here: http://www.boost.org/doc/libs/1_53_0/libs/config/doc/html/boost_config/boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_c__11_features_not_supported

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Todd Greer
Principal Scientist, Affinegy, Inc.

-----Original Message-----
From: cmake-bounces at cmake.org [mailto:cmake-bounces at cmake.org] On Behalf Of Theodore Papadopoulo
Sent: Wednesday, February 20, 2013 4:16 AM
To: Benjamin Eikel
Cc: cmake at cmake.org
Subject: Re: [CMake] detecting if c++11 available

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Nowadays, asking for c++-11 is probably too coarse as implementations are usually uncomplete. So you have a stdc++-11 switch and still missing some features on which you rely.

Another technique is to test features instead of the whole standard, that would be more robust...

I did something like that to get a cmake build of a library used to build with automake/autoconf (which have such a facility). It might not be very complicated to extend to new features....

	Theo.
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