[Libreoffice] Basic/newbie "how to build" questions

Hi,

1)
When I run ./autogen.sh with --enable-ext-FOO, it complains that
extension is not there and asks me if I have downloaded the -ext
tarball. But
http://wiki.documentfoundation.org/Development/Native_Build
is rather mum about that. Where is that tarball, where do I have to
put it, and why doesn't "make" download it automatically like the 70
others it puts in src/ ?

2)

When the build fails, I get an icon in my notification area (and a
pop-up). That's nice, but when the build fails a second time, a second
icon is added, then a third, etc. Is there a better way to dismiss
that icon than "killall zenity"? I use Xfce.


Thanks in advance for your help,

-- 
Lionel

diff -u --recursive silgraphite-2.3.1/engine/src/generic/Util.cpp 
../../graphite/unxlngx6/misc/build/silgraphite-2.3.1/engine/src/generic/Util.cpp
--- silgraphite-2.3.1/engine/src/generic/Util.cpp       2009-01-21 23:36:42.000000000 +0100
+++ ../../graphite/unxlngx6/misc/build/silgraphite-2.3.1/engine/src/generic/Util.cpp    2011-01-14 
23:27:40.000000000 +0100
@@ -191,8 +194,8 @@
                else
                        iuLim = iu;
        }
-       Assert(iuMin == cu || iuMin < cu && u <= g_rguPrimes[iuMin]);
-       Assert(iuMin == 0 || iuMin > 0 && u > g_rguPrimes[iuMin - 1]);
+       Assert(iuMin == cu || (iuMin < cu && u <= g_rguPrimes[iuMin]));
+       Assert(iuMin == 0  || (iuMin > 0  && u >  g_rguPrimes[iuMin - 1]));
 
        if (!iuMin)
                return g_rguPrimes[0];
@@ -222,8 +225,8 @@
                else
                        iuLim = iu;
        }
-       Assert(iuMin == cu || iuMin < cu && u < g_rguPrimes[iuMin]);
-       Assert(iuMin == 0 || iuMin > 0 && u >= g_rguPrimes[iuMin - 1]);
+       Assert(iuMin == cu || (iuMin < cu && u <  g_rguPrimes[iuMin]));
+       Assert(iuMin == 0  || (iuMin > 0  && u >= g_rguPrimes[iuMin - 1]));
 
        if (iuMin == cu)
                return g_rguPrimes[cu - 1];
@@ -249,8 +252,8 @@
                else
                        iuLim = iu;
        }
-       Assert(iuMin == cu || iuMin < cu && u <= g_rguPrimes[iuMin]);
-       Assert(iuMin == 0 || iuMin > 0 && u > g_rguPrimes[iuMin - 1]);
+       Assert(iuMin == cu || (iuMin < cu && u <= g_rguPrimes[iuMin]));
+       Assert(iuMin == 0  || (iuMin > 0  && u >  g_rguPrimes[iuMin - 1]));
 
        if (!iuMin)
                return g_rguPrimes[0];