ldc.conf is missing some tango libraries

Changed from a tango bug, to a ldc bug.

The problem is that the /etc/ldc.conf file only has some of the tango libraries. The switches are:

    switches = [
        "-I/usr/include/d",
        "-L-L/usr/lib/d",
        "-d-version=Tango",
        "-defaultlib=tango-base-ldc",
        "-debuglib=tango-base-ldc"
    ];

But they should be:

    switches = [
        "-I/usr/include/d",
        "-I/usr/include/d/ldc",
        "-L-L/usr/lib/d",
        "-L-ltango-user-ldc",
        "-d-version=Tango",
        "-defaultlib=tango-base-ldc",
        "-debuglib=tango-base-ldc"
    ];

The ldc.conf from ldc 0.9.2+hg1655 (from maverick) looks as following:

default:
{
    // 'switches' holds array of string that are appends to the command line
    // arguments before they are parsed.
    switches = [
        "-I/usr/include/d",
        "-I/usr/include/d/ldc",
        "-I/usr/include/d/tango/core/vendor",
        "-L-L/usr/lib/d",
        "-d-version=Tango",
        "-defaultlib=tango-user-ldc",
        "-debuglib=tango-user-ldc"
    ];
};

Do you know if the change you mentioned is still needed?

I just tried it in Maverick. Unfortunately I was unable to test, as the latest version is 0.9.1+hg1596-3. Even with the proposed repo activated. I need a way to test 0.9.2+hg1655 to be sure.

ldc 0.9.2+hg1655-0ubuntu1 is now in Maverick. There was a slight delay due to Beta Freeze till it got accepted into the archive.

I just tried it. The 1655 revision can't even build a simple:

void main() {
}

I dumps out linking errors like this:

/usr/lib/gcc/i686-linux-gnu/4.4.5/../../../../lib/crt1.o: In function `_start':
(.text+0x18): undefined reference to `main'
main.o: In function `_D4main16__moduleinfoCtorZ':
main:(.text+0x11): undefined reference to `_Dmodule_ref'
main:(.text+0x21): undefined reference to `_Dmodule_ref'
main.o:(.data+0x0): undefined reference to `_D10ModuleInfo6__vtblZ'
collect2: ld returned 1 exit status
Error: linking failed:
status: 1

I tried linking manually. But can't get it to work at all.

If you can't get the 1655 revision to work, I recommend moving to previous version 0.9.1+hg1596-3, and fixing the ldc.conf file.

In my limited experience of building ldc manually, 1596 version is an okay place to build from. Everything after that is extremely unstable. The ldc devs need to put out a snap shot that works.

Unfortunately going back to an older version would be really hard as the reason for the upgrade to hg1655 is that maverick has only llvm 2.7 and only versions greater than hg1650 build with it.

I can reproduce this problem you see and I might have a possible fix for it (at least I could compile your simple code):
based on the fix you proposed, I tried now adding "-L-ltango-base-ldc" to ldc.conf (as tango-user-ldc is now listed as defaultlib) and it worked.

Here is my current ldc.conf:
default:
{
    // 'switches' holds array of string that are appends to the command line
    // arguments before they are parsed.
    switches = [
        "-I/usr/include/d",
        "-I/usr/include/d/ldc",
        "-I/usr/include/d/tango/core/vendor",
        "-L-L/usr/lib/d",
        "-L-ltango-base-ldc",
        "-d-version=Tango",
        "-defaultlib=tango-user-ldc",
        "-debuglib=tango-user-ldc"
    ];
};

If you can confirm that it fixes this problem, I'll upload a fixed package.

I just tried your new ldc.conf. It works! I was able to compile trivial examples, and large frameworks.

Thanks

This bug was fixed in the package ldc - 0.9.2+hg1655-0ubuntu2

---------------
ldc (0.9.2+hg1655-0ubuntu2) maverick; urgency=low

  * Add missing tango libraries to ldc.conf.in (lp: #558810).
 -- Michael Bienia <email address hidden> Sun, 29 Aug 2010 23:59:01 +0200