Problem with compiling code with DMD 2.049

[Russel Winder]

On Fri, 2010-09-24 at 19:35 -0700, Jonathan M Davis wrote:
> On Friday 24 September 2010 18:25:47 Andy Elvey wrote:
> > Hi all -
> >  I'm a first-timer here and very keen to get into some D coding!
> > Unfortunately, I have a problem. I've installed the "one-click" .deb
> > package from Digital Mars, but when I try to compile a very simple D
> > program, I get this message -
> > dmd -w -c "hello.d" (in directory: /home/andy/d_stuff)
> > Compilation failed.
> > object.d: Error: module object cannot read file 'object.d'
> > 
> > So, does anyone know what is causing this, and how it can be fixed?
> > It looks like the compiler is unable to find something.
> > 
> > Very many thanks in advance - bye for now -
> > - Andy
> 
> It sounds like your dmd.conf needs adjusting or like maybe you don't have on at 
> all. It sets DFLAGS which tells the compiler where to find the source code for 
> druntime and phobos as well as their libraries. The current default dmd.conf is

A deb should be self-consistent and ensure that all dependencies are
installed.  If a deb installs successfully and the compiler fails to
work out "of the box" with an error related to a component that was
installed by the deb, then the deb is broken.

If this is the case in this case then a blocking bug should be reported.

The following is therefore -- if it works at all, I haven't tried it :-)
-- a hack workaround and not a fix.  Anyone following this route to make
things work should, quite rightly be expecting a new deb to be released
as a matter of urgency so that they do not need to put this workaround
in place.

> [Environment]
> 
> DFLAGS=-I%@P%/../../src/phobos -I%@P%/../../src/druntime/import -L-L%@P%/../lib 
> -L--export-dynamic
> 
> 
> So, you either need to adjust the one that gets installed with the deb package 
> or use your own in a place higher in the list of places to search for dmd.conf. 
> Look here for the specifics: http://www.digitalmars.com/d/2.0/dmd-
> linux.html#dmd_conf .

It perhaps should be noted that the deb is a 32-bit Ubuntu deb and so
may not work on Debian, or any Ubuntu other than the one compiled on
(i.e. Lucid, Karmic, etc.).  Rather than fight with installing a 32-bit
deb on a 64-bit system, I just install the binary tarball -- but in my
personal store not into /usr which should only be installed to by debs.

Launchpad has a PPA facility that allows for creation of working debs
for all Ubuntu releases simply by uploading a release tarball and
pressing a button -- once configuration is complete.  Might be worth
considering?

-- 
Russel.
=============================================================================
Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder at ekiga.net
41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel at russel.org.uk
London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder
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