Will -std=c++11 compiler flag be default at some point?

Question

As in title. Will it be default or to use C++11 features we will always have to add -std=c++11?

Right now, because of this option, C++11 still feels like some extra, non-standard thing.

To specify compiler, -std=c++11 flag is used by clang, g++ and even ICC.

I think future.stackexchange.com is where they hold the time machine. — zmbq, Dec 01 '14 at 11:33
@legends2k Also, clang and g++ do have that flag, but might have different policies regarding defaults. — juanchopanza, Dec 01 '14 at 11:35
Yes, clang mimics g++ perhaps for a business reason otherwise even that might have had a different flag — legends2k, Dec 01 '14 at 11:36
@legends2k Not always. A classic example is the `-fdiagnostics-color` and `-fcolor-diagnostics` flag. — , Dec 01 '14 at 11:36
@zmbq well, I was not asking when, but if it will become default. It could be that for conceptual reasons the flag would always need to be set. — mip, Dec 01 '14 at 12:10

score 5 · Answer 1 · answered Dec 01 '14 at 11:37

5

With g++, use -dumpspecs to generate a specs file. Use -print-search-dirs and first line is where to place specs file. Add the -std=c++11 option appropriate place in specs file, on the line following *cc1plus:.

answered Dec 01 '14 at 11:37

Cheers and hth. - Alf

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What do you put in the specs file? I keep getting `fatal error: specs file malformed after 2409 characters`. I tied a few things like: `std=c++11` and `-std=c++11` and `c++11` to no avail. – Galik Dec 01 '14 at 11:51
just `-std=c++11` works with MinGW g++ in Windows. don't know in Unix-land, but probably the same. the only real difference is with paths, they shouldn't be quoted and backslashes must be escaped with backslashes. – Cheers and hth. - Alf Dec 01 '14 at 11:54
Thnx, works now. No idea why it didn't work for me before I must have mistyped something. – Galik Dec 01 '14 at 12:48
Maybe you added extra blank line or something. Blank lines are significant in specs files. And for that matter in network protocols. – Cheers and hth. - Alf Dec 01 '14 at 13:16

Will -std=c++11 compiler flag be default at some point?

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