Installing dmd

[Georg Wrede]

Anders F Björklund wrote:
> Georg Wrede wrote:
> 
>> What this all comes down to, is, one should be able to install dmd for 
>> himself, without root privileges, and another user maybe a different 
>> version of dmd for herself. And a company should be able to install 
>> dmd for everybody on a computer.
> 
> The instructions was added to Wiki4D, hoping they would be included:
> http://prowiki.org/wiki4d/wiki.cgi?D__Tutorial/InstallingDCompiler#InstallingDMDonLinuxX86 
> 
> 
>> As a side benefit, fixing this most probably yields an easy (and 
>> documented) way to conveniently have several dmd versions installed 
>> and usable. For example, D1 and D2, or the last dmd for research and 
>> an older one for a multi-month pay project.
> 
> I have D1 installed as "dmd" and D2 installed as "dmd2", it takes
> some tricks to have it read /etc/dmd.conf and /etc/dmd2.conf though.
> 
> --anders

To my surprise, this seems to work:

$ cd Download
$ unzip dmd.1.040.zip
$ mv dmd dmd1040
$ unzip dmd.2.025.zip
$ mv dmd dmd2025
$ alias d1=/home/georg/Download/dmd1040/linux/bin/dmd
$ alias d2=/home/georg/Download/dmd2025/linux/bin/dmd
$ chmod u+x /home/georg/Download/dmd1040/linux/bin/dmd
$ chmod u+x /home/georg/Download/dmd2025/linux/bin/dmd
$ cd /tmp
$ vi ver.d
$ cat ver.d
import std.stdio;
import std.compiler;

void main()
{
   writefln("Version %d.%d", version_major, version_minor);
}
$ d1 ver.d
$ ./ver
Version 1.40
$ mv ver ver1
$ d2 ver.d
$ ./ver
Version 2.25


This leads one to expect that most of the job is done!

Now you actually can have several D versions as non-root installs!!

I wonder if there are some unexpected gotchas or caveats?

(And no, I don't have binaries in Download like this, it's just a test...)