[Bug 475891] Re: eagle crashes on: zoom into schematic

[Scott Howard]

The debian maintainer returned from vacation and had this to say about
the bug:

"
Eagle looks for its data files in the same directory as the executable
like so (more or less):
prefix=$(dirname $(dirname $(realpath $(which $argv0))))

We can set argv[0] using the -a option of exec. See `help exec`.

You can test this out at the command line:
$ ls -l .eagle/bin/eagle
-rwxr-xr-x 1 sjackman sjackman 11473300 2009-12-14 19:52 .eagle/bin/eagle
$ argv0=~/.eagle/bin/eagle; dirname $(dirname $(realpath $(which $argv0)))
/home/sjackman/.eagle

If we remove the executable from ~/.eagle/bin/eagle, eagle can still
find its data files. However, if argv[0] doesn't actually point to the
real executable, eagle will crash as soon as you use try to move a
wire. I don't know why that is.

At this point, we need to co-operate with upstream to ask them to add
a couple command line options. At the very least, it needs a --datadir
option to point to the data files. An additional --license option
would be very useful. If we had both these options, we could then
launch eagle like so:
eagle --datadir /usr/share/eagle --license ~/.eagle/license.key"

So he doesn't know why this fix works, but it does. I don't know if this
would be good enough for the SRU, but unfortunately, with the closed
code, I don't know if we can figure out what is going on. I'm working
with upstream to see if we could get the above command line options
included in future versions.

I'm setting back to "new," however, please reject if you are
uncomfortable uploading without understanding the exact reason why the
fix works. The fix is in comment #8.

** Changed in: eagle (Ubuntu)
       Status: Incomplete => New

-- 
eagle crashes on: zoom into schematic 
https://bugs.launchpad.net/bugs/475891
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