Checking for availability of C++0x algorithm additions

Question

I\'m trying to figure out which of the additions to the algorithm headers are supported by a given implementation (gcc and MSVC would be enough).

The simple way woul

Answer 1

Since all compiler vendors provide a nice list of what's available in what version, and you would test the functionality anyways, I would use compiler versions to check for specific features. Or demand the user uses at least a good version, and not worry about it.

__cplusplus is not necessarily a C++0x macro, it tells you nothing. GXX_EXPERIMENTAL has existed since GCC 4.3, so that's pretty useless too.

• This one is for GCC.

• This one is for MSVC. (mind you: partially implemented means broken)

• This one is for Intel.

Here you can find what macros to check against for a specific version of a compiler.

Answer 2

As far as I could figure out the only proper solution is to have a build script that tries to compile and run a file that uses the feature and has a runtime assertion. Depending on the outcome have a #define CONFIG_NO_FEATURENAME or similiar in a config file and guard your uses and workaround with a #ifndef.

This way it is possible to check if

1. the feature is available
2. the feature functions properly (depending on the correctness of the assertion)