C++Talk.NET C++ language newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  How portable is C++ today          C++Talk.NET Forum Index -> C++ language (comp.lang.c++) View previous topic :: View next topic   Author Message Metaosp Guest Posted: Sat Feb 25, 2006 1:06 pm    Post subject: How portable is C++ today Hi, When it comes to code portability, most people would think C is a better choice then C++. That was probably true 5 or 10 years ago, but how about today? Are there still many platforms or devices that have no good C++ compiler? C++ offers a lot more then C, would you use it to build a new cross-platform project that will support a wide range of platforms, say from handheld devices to multi-nodes servers? -- Metaosp Back to top Moonlit Guest Posted: Sat Feb 25, 2006 2:06 pm    Post subject: Re: How portable is C++ today Hi, Standard C++ is very portable. I develop mostly for unix (g++ version > 3.) like systems but I never have a problem compiling the code (MS-VC++ 2003 and later) on windows. However as soon as you start to use system specific stuff threading/mutexes/micro timers or windowing systems than you likely do have a small or large portability problem. It would be great if C++ (and C) would add multi threading and micro timers to the standard libraries since I think a lot of modern systems need or use them in some way. -- Regards, Ron AF Greve http://moonlit.xs4all.nl "Metaosp" <metaosp (AT) gmail (DOT) com> wrote in message news:1140870891.20935.21.camel@jupiter... Quote: Hi, When it comes to code portability, most people would think C is a better choice then C++. That was probably true 5 or 10 years ago, but how about today? Are there still many platforms or devices that have no good C++ compiler? C++ offers a lot more then C, would you use it to build a new cross-platform project that will support a wide range of platforms, say from handheld devices to multi-nodes servers? -- Metaosp Back to top loufoque Guest Posted: Sat Feb 25, 2006 3:06 pm    Post subject: Re: How portable is C++ today Metaosp a écrit : Quote: When it comes to code portability, most people would think C is a better choice then C++. Tools exist to convert C++ code to C. Back to top loufoque Guest Posted: Sat Feb 25, 2006 6:06 pm    Post subject: Re: How portable is C++ today Default User a écrit : Quote: Those don't usually produce any kind of C code that can be used by humans successfully. Indeed, put that's not the point. The point is to compile C++ code on a platform that only has a C compiler. Back to top Default User Guest Posted: Sat Feb 25, 2006 6:06 pm    Post subject: Re: How portable is C++ today loufoque wrote: Quote: Metaosp a écrit : When it comes to code portability, most people would think C is a better choice then C++. Tools exist to convert C++ code to C. Convert? Not really. There are some compilers that will compile to C. Those don't usually produce any kind of C code that can be used by humans successfully. Brian Back to top Nick Keighley Guest Posted: Sat Feb 25, 2006 7:06 pm    Post subject: Re: How portable is C++ today I've de-top posted this Moonlit wrote: Quote: "Metaosp" <metaosp (AT) gmail (DOT) com> wrote in message When it comes to code portability, most people would think C is a better choice then C++. That was probably true 5 or 10 years ago, but how about today? Are there still many platforms or devices that have no good C++ compiler? C++ offers a lot more then C, would you use it to build a new cross-platform project that will support a wide range of platforms, say from handheld devices to multi-nodes servers? Standard C++ is very portable. I understood (and I'm no expert) that some of the more esoteric template stuff was not universally supported. For instance this page from Boost: http://www.boost.org/status/compiler_status.html Quote: I develop mostly for unix (g++ version > 3.) like systems but I never have a problem compiling the code (MS-VC++ 2003 and later) on windows. However as soon as you start to use system specific stuff threading/mutexes/micro timers or windowing systems than you likely do have a small or large portability problem. It would be great if C++ (and C) would add multi threading and micro timers to the standard libraries since I think a lot of modern systems need or use them in some way. -- Nick Keighley Back to top Rolf Magnus Guest Posted: Sat Feb 25, 2006 8:06 pm    Post subject: Re: How portable is C++ today Default User wrote: Quote: loufoque wrote: Metaosp a écrit : When it comes to code portability, most people would think C is a better choice then C++. Tools exist to convert C++ code to C. Convert? Not really. There are some compilers that will compile to C. And what exactly is the difference? Quote: Those don't usually produce any kind of C code that can be used by humans successfully. So? Back to top heinz Guest Posted: Sun Feb 26, 2006 5:06 am    Post subject: Re: How portable is C++ today Quote: It would be great if C++ (and C) would add multi threading and micro timers to the standard libraries since I think a lot of modern systems need or use them in some way. That would have been really, really nice 20 years ago, but today we really need direct keyboard control (rather than echo'd input streams) and also graphical display (rather than typewriter like text out) as well. A truly portable C++ application can be little other than a crude command line tool. This isn't the kind of application your typical user runs today. To realize portability with C++, it is up to the developer to partition projects into portable and non-portable sections and use things in the standard whenever there is a choice versus platform specific API's or compiler extensions. Tuning the architecture to maximize portability is not free and takes time, but it is an investment that pays dividends in the end. Back to top Moonlit Guest Posted: Sun Feb 26, 2006 12:06 pm    Post subject: Re: How portable is C++ today Hi, You assume that every program has a user interface. Actually the programs I usually write don't. And still then, I can use a lot of the classes I write in windows application. Sockets, logging etc. these are all common amongst unices and ms-windows. And we do need multithreading, microtimers and the lot in today's windows applications and daemons etc.. Multithreading isn't exactly a technology of twenty yeears ago it is something that get's used more and more (for isnstance to separate the event-handling thread (that handles gui messages) and doing heavy duty stuff in the background ). Regards, Ron AF Greve http://moonlit.xs4all.nl "heinz" <heinz_baer@my-deja.com> wrote in message news:1140929685.470167.309450 (AT) z34g2000cwc (DOT) googlegroups.com... Quote: It would be great if C++ (and C) would add multi threading and micro timers to the standard libraries since I think a lot of modern systems need or use them in some way. That would have been really, really nice 20 years ago, but today we really need direct keyboard control (rather than echo'd input streams) and also graphical display (rather than typewriter like text out) as well. A truly portable C++ application can be little other than a crude command line tool. This isn't the kind of application your typical user runs today. To realize portability with C++, it is up to the developer to partition projects into portable and non-portable sections and use things in the standard whenever there is a choice versus platform specific API's or compiler extensions. Tuning the architecture to maximize portability is not free and takes time, but it is an investment that pays dividends in the end. Back to top Chameleon Guest Posted: Mon Feb 27, 2006 12:06 am    Post subject: Re: How portable is C++ today Moonlit wrote: Quote: Hi, Standard C++ is very portable. I develop mostly for unix (g++ version > 3.) like systems but I never have a problem compiling the code (MS-VC++ 2003 and later) on windows. However as soon as you start to use system specific stuff threading/mutexes/micro timers or windowing systems than you likely do have a small or large portability problem. Quote: It would be great if C++ (and C) would add multi threading and micro timers to the standard libraries since I think a lot of modern systems need or use them in some way. I believe, companies must agree to a third-party API libraries which must be implemented in all OS platforms. (like OpenGL in 3d graphics, or MIDP 2.0 on mobile phones) However, a compiler for an 8-bit microcontroller and an OS for x86 processors cannot have the same API. Back to top Chameleon Guest Posted: Mon Feb 27, 2006 12:06 am    Post subject: Re: How portable is C++ today loufoque wrote: Quote: Metaosp a écrit : When it comes to code portability, most people would think C is a better choice then C++. Tools exist to convert C++ code to C. Wrong. Not in human readable form. btw, this decreases optimization from C++ compiler. Back to top Guest Posted: Mon Feb 27, 2006 10:06 am    Post subject: Re: How portable is C++ today Rolf Magnus wrote: Quote: Default User wrote: loufoque wrote: Tools exist to convert C++ code to C. Convert? Not really. There are some compilers that will compile to C. And what exactly is the difference? Expectations. I'd expect a converter to convert // to /* */ . I'd expect a compiler to strip them outright. Same goes for every other preprocessor entity. Since that includes headers, the output of the compiler could be usable on only that precise machine, with precisely the one C compiler installed there. HTH, Michiel Salters Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         C++Talk.NET Forum Index -> C++ language (comp.lang.c++) All times are GMT Page 1 of 1   Jump to: Select a forum C/C++----------------C LanguageC Language (Moderated)C++ Language (Moderated)C++ language (comp.lang.c++)C++ language, library and standards Non-English C/C++ Newsgroups----------------C++ (German)C++ (French)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.