Re: [Boost-users] program_options: Make PO not eat argc

8 Oct 2014

      On 10/08/2014 10:54 AM, Florian Lindner wrote:
...
Hello,
I have a couple of libraries (MPI, petsc) that also consume my applications
argc and argv, which is parsed with boost::program_options before.
po seems to eat up argv, i.e. removes all items that it handles. Can I
disable that behavior somehow so that po does not touch argc/argv. Or do I
need to recreate it, e.g. using collect_unrecognized?
Florian,

this is not expected. Here's the code for parsing:

	cmdline::cmdline(int argc, const char*const * argv)
     	{
	#if defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)
         	vector<string> args;
	        copy(argv+1, argv+argc+!argc, inserter(args, args.end()));
         	init(args);
	#else
         	init(vector<string>(argv+1, argv+argc+!argc));
	#endif
     	}

So the argc/argv is immediately converted into vector, which is parsed. Can you reproduce this
problem in a simple example?

- Volodya

Re: [Boost-users] program_options: Make PO not eat argc

Vladimir Prus