Re: Writing "absolutely" portable code

From	ArifulHossain tuhin <etothepowerpi@gmail.com>
Newsgroups	comp.lang.c
Subject	Re: Writing "absolutely" portable code
Date	2012-01-09 05:45 -0800
Organization	http://groups.google.com
Message-ID	<6133945.1532.1326116707234.JavaMail.geo-discussion-forums@prmu37> (permalink)
References	<9483089.582.1326104763671.JavaMail.geo-discussion-forums@prj1> <jeek4h$695$1@dont-email.me>

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> Strictly follow POSIX and the C99 standard.  Avoid using 
> compiler-specific extensions.  Don't rely on the sizes of integer types; 
> if you need an N-bit int, use intN_t.  If you need, for instance, 
> strndup, have some #ifdef-ed code that provides a replacement if it's 
> not present in the standard library.  Hand-make a configure script that 
> tests for the things you need (by compiling and running tiny C programs) 
> and outputs that information into a file that gets included by your 
> Makefile (and defines some variable to hold some -D macro definitions 
> for the cpp).  Hand-roll your makefile too, using implicit rules (%, $< 
> and $@ are your friends), but if some targets don't support GNU make, 
> you may need to write a tool to generate an explicit makefile from your 
> implicit rules (such a tool would be easier to write in, say, perl, than 
> in C).
>
I'm also a supporter of hand written makefiles too. I will try to do that with the project. 
> Making software portable to Symbian is difficult, a losing game, and 
> probably not worthwhile (Symbian will probably be dead soon anyway). 
> There exists "P.I.P.S Is Posix on Symbian" which may help, but according 
> to Wiki it lacks signals and asynch IO.
> A reference implementation of RFCs probably does not need to be portable 
> to Symbian in any case; my suggestion would be that a Symbian 
> implementation should be a separate project.  It is (so I gather) so 
> different to POSIX-like systems that the gyrations needed to make the 
> same code run on both platforms would impede the readability of the code 
> (which is important for reference imps).
> 
Symbian portability is still a second thought. There is a huge user base of symbian devices in asian countries, So management is trying to push it down our throats. :)
> On the more general note of avoiding Autotools, I would note that all my 
> open-source projects (there are several) use hand-written Makefiles, 
> none has a configure script, and I have yet to encounter anything more 
> severe than a few #ifdef WINDOWS to handle cross-compilation to that 
> platform (and separate make rules for Windows targets).  With a 
> cross-compiling gcc, even Cygwin is not necessary (although it would be 
> if you wanted to /compile/ on Windows).
> 
Thats what i'm looking for. Is it possible to give links of the projects you have worked on. I'm trying to learn the art of writing makefiles myself. Most of the opensource projects i have come across uses autotools. So some example of hand written makefiles will be very handy.
> -e
> -- 
> 'sane', adj.: see 'unimaginative'
>    on the web - http://jttlov.no-ip.org
Thanks for the heads up.

Thread

Writing "absolutely" portable code ArifulHossain tuhin <etothepowerpi@gmail.com> - 2012-01-09 02:26 -0800
  Re: Writing "absolutely" portable code ec429 <ec429@cam.ac.uk> - 2012-01-09 11:47 +0000
    Re: Writing "absolutely" portable code Jens Gustedt <jens.gustedt@loria.fr> - 2012-01-09 13:56 +0100
    Re: Writing "absolutely" portable code ArifulHossain tuhin <etothepowerpi@gmail.com> - 2012-01-09 05:45 -0800
      Re: Writing "absolutely" portable code ec429 <ec429@cam.ac.uk> - 2012-01-09 14:46 +0000
        Re: Writing "absolutely" portable code ArifulHossain tuhin <etothepowerpi@gmail.com> - 2012-01-10 01:11 -0800
    Re: Writing "absolutely" portable code Rui Maciel <rui.maciel@gmail.com> - 2012-01-09 15:58 +0000
    Re: Writing "absolutely" portable code falk@rahul.net (Edward A. Falk) - 2012-01-09 18:41 +0000
  Re: Writing "absolutely" portable code Rui Maciel <rui.maciel@gmail.com> - 2012-01-09 12:23 +0000
    Re: Writing "absolutely" portable code Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-01-09 08:45 -0500
      Re: Writing "absolutely" portable code superpollo <superpollo@tznvy.pbz> - 2012-01-09 15:02 +0100
        Re: Writing "absolutely" portable code Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-01-09 16:11 +0000
    Re: Writing "absolutely" portable code ArifulHossain tuhin <etothepowerpi@gmail.com> - 2012-01-09 05:56 -0800
      Re: Writing "absolutely" portable code Rui Maciel <rui.maciel@gmail.com> - 2012-01-09 15:07 +0000
        Re: Writing "absolutely" portable code ArifulHossain tuhin <etothepowerpi@gmail.com> - 2012-01-10 01:21 -0800
          Re: Writing "absolutely" portable code Stephen Sprunk <stephen@sprunk.org> - 2012-01-10 13:20 -0600
            Re: Writing "absolutely" portable code ArifulHossain tuhin <etothepowerpi@gmail.com> - 2012-01-11 06:57 -0800
          Re: Writing "absolutely" portable code Rui Maciel <rui.maciel@gmail.com> - 2012-01-11 09:23 +0000
  Re: Writing "absolutely" portable code jacob navia <jacob@spamsink.net> - 2012-01-09 13:48 +0100
    Re: Writing "absolutely" portable code ec429 <ec429@cam.ac.uk> - 2012-01-09 13:11 +0000
      Re: Writing "absolutely" portable code Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-01-09 05:27 -0800
        Re: Writing "absolutely" portable code ec429 <ec429@cam.ac.uk> - 2012-01-09 13:41 +0000
          Re: Writing "absolutely" portable code ArifulHossain tuhin <etothepowerpi@gmail.com> - 2012-01-09 06:09 -0800
      Re: Writing "absolutely" portable code jacob navia <jacob@spamsink.net> - 2012-01-09 14:35 +0100
        Re: Writing "absolutely" portable code Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-01-09 13:44 +0000
          Re: Writing "absolutely" portable code ArifulHossain tuhin <etothepowerpi@gmail.com> - 2012-01-09 06:18 -0800
          Re: Writing "absolutely" portable code jacob navia <jacob@spamsink.net> - 2012-01-09 18:59 +0100
          Re: Writing "absolutely" portable code jacob navia <jacob@spamsink.net> - 2012-01-09 19:01 +0100
            Re: Writing "absolutely" portable code ec429 <ec429@cam.ac.uk> - 2012-01-09 19:21 +0000
              Re: Writing "absolutely" portable code Richard <rgrdev_@gmail.com> - 2012-01-10 20:48 +0100
                Re: Writing "absolutely" portable code David Dyer-Bennet <dd-b@dd-b.net> - 2012-01-10 14:26 -0600
                Re: Writing "absolutely" portable code Richard <rgrdev_@gmail.com> - 2012-01-10 21:44 +0100
                Re: Writing "absolutely" portable code David Dyer-Bennet <dd-b@dd-b.net> - 2012-01-10 15:45 -0600
                Re: Writing "absolutely" portable code Rui Maciel <rui.maciel@gmail.com> - 2012-01-11 09:12 +0000
                Re: Writing "absolutely" portable code ec429 <ec429@cam.ac.uk> - 2012-01-11 11:10 +0000
                Re: Writing "absolutely" portable code James Kuyper <jameskuyper@verizon.net> - 2012-01-11 11:52 -0500
                Re: Writing "absolutely" portable code ec429 <ec429@cam.ac.uk> - 2012-01-11 17:01 +0000
                Re: Writing "absolutely" portable code James Kuyper <jameskuyper@verizon.net> - 2012-01-11 12:11 -0500
              Re: Writing "absolutely" portable code Rui Maciel <rui.maciel@gmail.com> - 2012-01-11 09:08 +0000
            Re: Writing "absolutely" portable code Rui Maciel <rui.maciel@gmail.com> - 2012-01-11 08:22 +0000
            Re: Writing "absolutely" portable code Rui Maciel <rui.maciel@gmail.com> - 2012-01-11 08:54 +0000
        Re: Writing "absolutely" portable code ec429 <ec429@cam.ac.uk> - 2012-01-09 13:57 +0000
          Re: Writing "absolutely" portable code Seebs <usenet-nospam@seebs.net> - 2012-01-09 19:21 +0000
            Re: Writing "absolutely" portable code ec429 <ec429@cam.ac.uk> - 2012-01-09 19:52 +0000
              Re: Writing "absolutely" portable code Seebs <usenet-nospam@seebs.net> - 2012-01-09 20:20 +0000
        Re: Writing "absolutely" portable code ArifulHossain tuhin <etothepowerpi@gmail.com> - 2012-01-09 06:16 -0800
    Re: Writing "absolutely" portable code ArifulHossain tuhin <etothepowerpi@gmail.com> - 2012-01-09 06:02 -0800
  Re: Writing "absolutely" portable code Keith Thompson <kst-u@mib.org> - 2012-01-09 14:50 -0800
    Re: Writing "absolutely" portable code Kaz Kylheku <kaz@kylheku.com> - 2012-01-09 23:20 +0000
      Re: Writing "absolutely" portable code Rui Maciel <rui.maciel@gmail.com> - 2012-01-10 00:23 +0000
    Re: Writing "absolutely" portable code Dirk Zabel <zabel@riccius-sohn.eu> - 2012-01-10 17:44 +0100
      Re: Writing "absolutely" portable code ArifulHossain tuhin <etothepowerpi@gmail.com> - 2012-01-11 07:13 -0800
      Re: Writing "absolutely" portable code Nick Bowler <nbowler@draconx.ca> - 2012-01-17 20:36 +0000
        Re: Writing "absolutely" portable code ec429 <ec429@cam.ac.uk> - 2012-01-17 23:06 +0000
          Re: Writing "absolutely" portable code blp@cs.stanford.edu (Ben Pfaff) - 2012-01-17 15:32 -0800
            Re: Writing "absolutely" portable code Kaz Kylheku <kaz@kylheku.com> - 2012-01-18 00:40 +0000
              Re: Writing "absolutely" portable code Seebs <usenet-nospam@seebs.net> - 2012-01-18 18:35 +0000
                Re: Writing "absolutely" portable code Kaz Kylheku <kaz@kylheku.com> - 2012-01-18 19:15 +0000
                Re: Writing "absolutely" portable code Seebs <usenet-nospam@seebs.net> - 2012-01-21 21:32 +0000
            Re: Writing "absolutely" portable code "io_x" <a@b.c.invalid> - 2012-01-18 07:26 +0100
              Re: Writing "absolutely" portable code "Joachim Schmitz" <nospam.jojo@schmitz-digital.de> - 2012-01-18 11:07 +0100
                Re: Writing "absolutely" portable code Seebs <usenet-nospam@seebs.net> - 2012-01-21 21:32 +0000
                Re: Writing "absolutely" portable code Ian Collins <ian-news@hotmail.com> - 2012-01-22 10:42 +1300
                Re: Writing "absolutely" portable code "io_x" <a@b.c.invalid> - 2012-01-22 18:53 +0100
                Re: Writing "absolutely" portable code "io_x" <a@b.c.invalid> - 2012-01-22 19:00 +0100
                Re: Writing "absolutely" portable code "io_x" <a@b.c.invalid> - 2012-01-23 19:28 +0100
              Re: Writing "absolutely" portable code Stephen Sprunk <stephen@sprunk.org> - 2012-01-18 08:44 -0600
              Re: Writing "absolutely" portable code James Dow Allen <jdallen2000@yahoo.com> - 2012-01-18 07:09 -0800
                Re: Writing "absolutely" portable code "io_x" <a@b.c.invalid> - 2012-01-18 17:44 +0100
        Re: Writing "absolutely" portable code Seebs <usenet-nospam@seebs.net> - 2012-01-18 07:58 +0000

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