Re: C++11

Markus Wanner <[email protected]> Thu, 15 May 2014 22:27:14 +0200
Newsgroups	gmane.comp.version-control.monotone.devel
Message-ID	<[email protected]>
On 05/15/2014 09:18 PM, Stephen Leake wrote:
> gcc --version
> gcc (GCC) 4.7.4 20131104 for GNAT Pro 7.2.1 (20140108)

for GNAT Pro?!?

> In file included from ../mandatory-cxx11/src/globish.cc:14:0:
> ../mandatory-cxx11/src/option.hh: In member function
> option::option_set<T> option::option_set<T>::operator|(const
> option::option_set<T>&) const':
> ../mandatory-cxx11/src/option.hh:332:7: error: 'set_union' is not a member of 'std'
> ../mandatory-cxx11/src/option.hh: In member function
> option::option_set<T> option::option_set<T>::operator-(const
> option::option_set<T>&) const':
> ../mandatory-cxx11/src/option.hh:340:7: error: 'set_difference' is not a member of 'std'
> ../mandatory-cxx11/src/globish.cc: In function
> std::basic_string<char>::const_iterator compile_charclass(const
> string&, std::basic_string<char>::const_iterator,
> std::back_insert_iterator<std::basic_string<char> >&, origin::type)':
> ../mandatory-cxx11/src/globish.cc:141:7: error: 'sort' is not a member of 'std'

Hm.. there's nothing new about std::sort. Nor set_union or
set_difference. This looks more like you're using some weird standard
library.

Does that g++ version compile plain nvm? That's is using the very same
standard library functions from <algorithm>...

> Also, I notice you are using -std=gnu++11; shouldn't that be
> -std=iso9899:2011, so we don't rely on gnu extensions?

The m4 script is supposed to use -std=gnu++11 only if -std=c++11 is not
supported. I haven't ever seen -std=iso9899:2011, before, but certainly
prefer the shorter variant.

Does your g++ support -std=c++11? If so, it looks like the m4 macro is
failing to do its job properly.

Regards

Markus Wanner

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