DVM - D Version Manager 0.2.0

[Jacob Carlborg]

On 2011-05-18 09:15, Nick Sabalausky wrote:
> "Jacob Carlborg"<doob at me.com>  wrote in message
> news:iqvpon$6p0$1 at digitalmars.com...
>> On 2011-05-18 06:35, Nick Sabalausky wrote:
>>>
>>> Sounds cool, but dvm-0.2.0-linux-32 is just giving me "Illegal
>>> instruction"
>>> on Kubuntu 10.04 x86-32. And I don't see any instructions for how to
>>> build
>>> it anywhere in the source tree or on the homepage.
>>
>> Ok, strange. I built the tool on Ubuntu 11.04, maybe it's too new. How can
>> I build it to work on as many platforms as possible? The runtime
>> dependencies are just the same as a regular C application and zlib.
>>
>
> You know, I'm far from a Linux expert, but making compatible linux binaries
> seems to be quite a nightmare. In fact, I just recently went through hell
> myself trying to figure out how to compile a Hello World CGI app on my linux
> system and have it actually work on another linux system.
>
> You can follow my fun-filled adventures through it with these discussions:

Yeah, I read parts of those threads.

> digitalmars.D.learn: "D CGI test: linux.so.2: bad ELF interpreter: No such
> file or directory" (2011/04/25)
> digitalmars.D.learn: "Linux: How to statically link against system libs?"
> (2011/04/26)
> http://ubuntuforums.org/showthread.php?t=1740277
>
> But the bottom line seems to be: Linux is in a bigger DLL hell than windows
> has ever been, and I don't think *anyone* actually knows how to do it.
>
> In my case, I ended up just installing an older version of linux in a VM and
> compiling inside that (CentOS 4, largely because I needed to be able to run
> on a CentOS server that wasn't happy with my Kubuntu 10.04 executables). The
> resulting binaries did work on my Kubuntu 10.04 machine, too, so I guess the
> trick is to just compile on the oldest machine you can. Go figure: All the
> focus everyone puts on updating to newer versions, and it ends up best to
> stick with the older versions - not because the older ones were better, but
> just *because* they're older. Meh. Anyway, pardon the rant :/

Hehe.

> You'd think there'd be a way to compile in a backwards-compatible way on
> linux, but I'm getting the impression that if it's possible, no one actually
> knows how.

Wouldn't it just be possible to use an older version of GCC?

>> Added build instructions at the bottom of: https://bitbucket.org/doob/dvm
>>
>
> Thanks :) I think I'm almost there. I've been using D2/Phobos/RDMD for the
> past year or so (plus my usual machine is a windows box), so I had a lot of
> setting up to do, but I think I've almost got it now. When I do, I'll post
> the final binary in case it helps anyone else (I can only make a 32-bit
> binary though).
-- 
/Jacob Carlborg