Archive for February, 2011

We need:
and a shot glass.

No…. I am not drinking this early. lol
Take the shot glass, and place it in the middle of the bread.

Now, make a hole in the bread

Take a pan and melt some butter. (for the best result, use real butter)
Put the bread in the pan, and add the egg.
Make the yolk go in the hole.

Let it fry a while and flip it around

Add some pepper and salt, and serve.

I am following a course Data Structures as part of the pre-master
programme at university. During this course, there are homework
assignments that should preferably done in LaTeX. Now, making
drawings in LaTeX can be a pain in the a$$.

One of my instructors recommended using the program ipe to
do this. As this program is not available as a package in the
Mandriva repository, I have to compile it from source.

The instructions on the website assume a debian based system,
but Mandriva is a redhat bases system. So, the first step,
dependencies. As the package naming scheme on rpm based
systems differs from deb based systems, this is the first thing
to look at.

The install.txt file mentions:

    sudo apt-get install zlib1g-dev libqt4-dev
    sudo apt-get install libfreetype6-dev libcairo2-dev
    sudo apt-get install liblua5.1-0-dev gsfonts

First of all, I don’t like to use sudo, I prefer to use su. As I like to
have a different password for root stuff then for user stuff.
So, I will execute the commands from a root shell.

    urpmi zlib1-devel libqt4-devel
    urpmi libfreetype6-devel libcairo-devel
    urpmi liblua-devel

The different naming scheme includes the prefix -devel in stead of -dev,
which isn’t that hard. But for example, the debian scheme has a libcairo2
while the redhat equivalence is libcairo. The gsfonts package… well…
it’s a package that contains certain ‘type 1’ fonts.  As there is no package
with simular names available, this might get a little more tricky to find the
corresponding package. But the readme file gives a list of file names that
should be included,  but unfortunately, these file names give no results either.

Another line in the readme file gives me a clue:

   Identical fonts may also be in subdirectories of
   “/usr/share/texmf/fonts/type1/urw” or

There exists a package named ‘texlive-texmf-fonts’ so, I guess,
that will be the one I need. So, this will be

    urpmi texlive-texmf-fonts

So far for the dependencies. Let’s compile the program!
Really? No!

The first problem to appear is, a program named, moc-qt4 is not
found. Well… the solution to this problem is to make a symlink
to /usr/lib/qt4/bin/moc.

Well… trying again…. still no success… it’s raining messages
about undefined references. Which means, the Makefile doesn’t break
on errors correctly, as it should.

Settings the terminal to unlimited scrollback reveals the following error,
somewhere at top

Package lua5.1 was not found in the pkg-config search path.
Perhaps you should add the directory containing `lua5.1.pc’
to the PKG_CONFIG_PATH environment variable
No package ‘lua5.1’ found

Weird…. I *did* install the lua devel package, right? Perhaps it’s
the wrong version? Well… lua -v says it’s 5.1.4, so that should be
right. Different makes in the pkg_config databases…. that’s new
for me, as pkg_config should exists undependable from the packaging
system, as it will also include software compiled from source.

Well… how to solve this. Open the config.mak file and replace
lua5.1 with lua. Now, finally, the program seems to compile.

make install seems to work fine as well,

…but the next step from the readme file:

sudo cp ../fontmaps/gsfonts-fontmap.xml
sudo ldconfig

What??? having to copy a file after running make install???
Isn’t make install supposed to install all files???

Also, it seems that make clean is broken

All I can say, this is a bad makefile. Making certain assumptions
about the target system, which is basically a bad idea.

Seeing how much trouble it is to get it to work, this is bad,
not just for this specific program, but for open source software
in general, as this is what gives open source software the reputation
of being difficult to install.

autoconf/automake is used to compile many open source software
programs. Yes, it has also it’s disadvantages, like being slow,
and one sees it checking for irrelevant things, like checking for
a fortran compiler when we’re going to compile a C program, but,
nevertheless, autoconf/automake would have prevented the kind
of problems which I experienced when trying to compile the
program, (except the names of the packages, of course)

ANd I’ve noticed, ‘make clean’ is also broken.

Well… the software is installed, right? Let’s run it….
Uhm… NO!

ipe: error while loading shared libraries: cannot open shared object file: No such file or directory

great….. f*cking great… Did I mention I have to run ldconfig MANUALLY?
right…. adding the /usr/local/lib to the ld configuration. Now it *finally* starts.

Now, this program better be f*cking great since I’ve spend a lot of time
to get it working.

Why I don’t celebrate Valentine’s Day.

First of all, I wasn’t raised with it. This “holiday”. It has only been
‘introduced’ in this country in the mid 90’s, by the means of
companies advertising.

This brings me directly to the reason I don’t celebrate this day, since
it’s purpose, the reason why it was introduced here, was only, for
the companies to make money. And to exploit love for profit…
I don’t want to be part of that.

Just look at the amount of emails from various websites I’ve
received the past days with this day in the topic. It’s all
about profit

If you want to celebrate this day, I urge you not to *BUY* presents,
in stead, I suggest to give a hand made present. I believe, giving
something you put effort in to make it, is worth much more then
something you’ve only spend money on.

Another phenomenon this day seems to create are the people
who say they hate it because they are single. What this group
of people represents,  goes beyond the meaning of this day,
but it reflects something in out society. I’m not sure how to
explain this in English. But it comes down that this holiday
creates the idea you HAVE to have a boyfriend or girlfriend.
It’s the idea that society puts this pressure on individuals, they
have to perform, they have to confirm certain exceptions.

First post of the year. I know, It’s February
already, but better late then never, right?

So, what’s going on? Not that much, really.
Second week of classes again, after the exam
period. I’ve failed my databases exam, but,
with a 4 for my partial exam, it was kinda
to be expected, I guess.

I’ve passed statistics with an 8 and Logic and
set theory with a 7. So, my other subjects
are going well. The only subject I’m still
waiting for is Philosophy of Science.
The result should be there soon, I mean,
this *is* the 2nd week of classes!

Anyways, I have passed enough bachelor
subjects in my pre-master, so I am taking
master classes now, and also data structures,
(which is a bachelor subject, still a compulsory
pre-master subject)

And also this semester, I am taking a philosophy
class. “Philosophy and Causality”. I must say,
taking philosophy classes have a positive effect
on me. I feel much better now I am taking these

So… philosophy of science, last semester, is the
first time I was taking a philosophy class, so I
am still kinda new to the area, but, I like it.