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<H1><A NAME="appendix_e">Appendix E - Developer Cries</A></H1>
<P>There are two major topics which always cause huge dispute and flame on the
<A HREF="http://mplayerhq.hu/pipermail/mplayer-users/">mplayer-users</A>
mailing list. Number one is the topic of the</P>
<H2><A NAME="gcc">E.1 GCC 2.96</A></H2>
<P><B>The background:</B> The GCC <B>2.95</B> series is an official GNU release
and version 2.95.3 of GCC is the most bug-free in that series.
We have never noticed compilation problems that we could trace to GCC 2.95.3.
Starting with Red Hat Linux 7.0, <B>Red Hat</B> included a heavily
patched CVS version of GCC in their distribution and named it <B>2.96</B>. Red
Hat included this version in the distribution because GCC 3.0 was not finished
at the time, and they needed a compiler that worked well on all of their
supported platforms, including IA64 and s390. The Linux distributor
<B>Mandrake</B> also followed Red Hat's example and started shipping GCC 2.96
with their Linux-Mandrake 8.0 series.</P>
<P><B>The statements:</B> The GCC team disclaimed any link with GCC 2.96 and
issued an <A HREF="http://gcc.gnu.org/gcc-2.96.html">official response</A> to
GCC 2.96. Many developers around the world began having problems with GCC 2.96,
and started recommending other compilers. Examples are
<A HREF="http://www.mysql.com/downloads/mysql-3.23.html">MySQL</A>,
<A HREF="http://avifile.sourceforge.net/news-old1.htm">avifile</A> and
<A HREF="http://www.winehq.com/news/?view=92#RH%207.1%20gcc%20fixes%20compiler%20bug">Wine</A>.
Other interesting links are
<A HREF="http://www.atnf.csiro.au/people/rgooch/linux/docs/kernel-newsflash.html">
Linux kernel news flash about kernel 2.4.17</A> and
<A HREF="http://www.voy.com/3516/572.html">Voy Forum</A>.
MPlayer also suffered from intermittent problems that were all solved by
switching to a different version of GCC. Several projects started implementing
workarounds for some of the 2.96 issues, but we refused to fix other people's
bugs, especially since some workarounds may imply a performance penalty.</P>
<P>You can read about the other side of the story
<A HREF="http://web.archive.org/web/20011024212120/http://www.bero.org/gcc296.html">at this site</A>.
GCC 2.96 does not allow | (pipe) characters in assembler comments
because it supports Intel as well as AT&T Syntax and the | character is a
symbol in the Intel variant. The problem is that it <B>silently</B> ignores the
whole assembler block. This is supposedly fixed now, GCC prints a warning instead
of skipping the block.</P>
<P><B>The present:</B> Red Hat says that GCC 2.96-85 and above is fixed. The
situation has indeed improved, yet we still see problem reports on our
mailing lists that disappear with a different compiler. In any case it does not
matter any longer. Hopefully a maturing GCC 3.x will solve the issue for good.
If you want to compile with 2.96 give the <CODE>--disable-gcc-checking</CODE>
flag to configure. Remember that you are on your own and <B>do not report any
bugs</B>. If you do, you will only get banned from our mailing list because
we have had more than enough flame wars over GCC 2.96. Please let the matter
rest.</P>
<P>If you have problems with GCC 2.96, you can get 2.96-85 packages from the
Red Hat <A HREF="ftp://updates.redhat.com">ftp server</A>, or just go for the
3.0.4 packages offered for version 7.2 and later. You can also get
<A HREF="ftp://people.redhat.com/jakub/gcc/3.2-10/">gcc-3.2-10 packages</A>
(unofficial, but working fine) and you can install them along the GCC 2.96 you
already have. MPlayer will detect it and use 3.2-10 instead of 2.96. If you do
not want to or cannot use the binary packages, here is how you can compile the
latest GCC from source:</P>
<OL>
<LI>Go to the <A HREF="http://gcc.gnu.org/mirrors.html">GCC mirrors page</A>
page and download <CODE>gcc-core-XXX.tar.gz</CODE> where <CODE>XXX</CODE> is
the version number. This includes the complete C compiler and is sufficient
for MPlayer. If you also want C++, Java or some of the other advanced GCC
features <CODE>gcc-XXX.tar.gz</CODE> may better suit your needs.</LI>
<LI>Extract the archive with<BR>
<CODE>tar -xvzf gcc-core-XXX.tar.gz</CODE></LI>
<LI>GCC is not built inside the source directory itself like most programs,
but needs a build directory outside the source directory. Thus you need to
create this directory via<BR>
<CODE>mkdir gcc-build</CODE></LI>
<LI>Then you can proceed to configure GCC in the build directory, but you need
the configure from the source directory:<BR>
<CODE>cd gcc-build<BR>
../gcc-XXX/configure</CODE></LI>
<LI>Compile GCC by issuing this command in the build directory:<BR>
<CODE>make bootstrap</CODE></LI>
<LI>Now you can install GCC (as root) by typing<BR>
<CODE>make install</CODE></LI>
</OL>
<H2><A NAME="binary">E.2 Binary distribution</A></H2>
<P>MPlayer previously contained source from the OpenDivX project, which
disallows binary redistribution. This code has been removed in version
0.90-pre1 and the remaining file <CODE>divx_vbr.c</CODE> that is derived
from OpenDivX sources has been put under the GPL by its authors as of version
0.90pre9. You are now welcome to create binary packages as you see fit.</P>
<P>Another impediment to binary redistribution were compiletime optimizations
for CPU architecture. MPlayer now supports runtime CPU detection (specify
the <CODE>--enable-runtime-cpudetection</CODE> option when configuring). It
is disabled by default because it implies a small speed sacrifice, but it is
now possible to create binaries that run on different members of the Intel
CPU family.</P>
<H2><A NAME="nvidia">E.3 nVidia</A></H2>
<P>We dislike the fact that <A HREF="http://www.nvidia.com">nVidia</A>
only provides binary drivers (for use with XFree86), which are often buggy.
We have had many reports on
<A HREF="http://mplayerhq.hu/pipermail/mplayer-users/">mplayer-users</A>
about problems related to these closed-source drivers
and their poor quality, instability and poor user and expert support.
Some examples can be found on the
<A HREF="http://www.nvnews.net/vbulletin/forumdisplay.php?s=6d83dc289805c37caef49b77857a0b7e&daysprune=&forumid=27">
nVidia Linux Forum</A>.
Many of these problems/issues keep appearing repeatedly.
We have been contacted by nVidia lately, and they said these bugs
do not exist, instability is caused by bad AGP chips, and they received
no reports of driver bugs (like the purple line). So if you have a
problem with your nVidia card, you are advised to update the nVidia driver
and/or buy a new motherboard or ask nVidia to supply open-source drivers.
In any case, if you are using the nVidia binary drivers and facing driver related problems,
please be aware that you will receive very little help from our side because we have
little power to help in this matter.</P>
<H2><A NAME="barr">E.4 Joe Barr</A></H2>
<P>Joe Barr became infamous by writing a less than favorable
<A HREF="http://www.linuxworld.com/site-stories/2001/1214.mplayer.html">
MPlayer review</A>. He found MPlayer hard to install, but then
again he is not very fond of
<A HREF="http://www.linuxworld.com/linuxworld/lw-2000-06/lw-06-exam.html">reading documentation</A>.
He also concluded that the developers were unfriendly and the documentation
incomplete and insulting. You be the judge.
He went on to mention MPlayer negatively in his
<A HREF="http://www.linuxworld.com/site-stories/2001/1227.predictions.html">10 Linux predictions for 2002</A>
In a followup
<A HREF="http://www.linuxworld.com/site-stories/2002/0125.xine.html">review of xine</A>
he continued stirring up controversy. Ironically at the end of that article he
quotes his exchange with Günter Bartsch, the original author of xine, that
perfectly summarizes the whole situation:</P>
<BLOCKQUOTE>
However, he also went on to say that he was "surprised" by my column about
MPlayer and thought it was unfair, reminding me that it is a free software
project. "If you don't like it," Bartsch said, "you're free not to use it."
</BLOCKQUOTE>
<P>He does not reply to our mails. His editor does not reply to our mails.
Here are some quotes from different people about Joe Barr, so you can form your
own opinion:</P>
<P>Marc Rassbach has <A HREF="http://daily.daemonnews.org/view_story.php3?story_id=2102">something to say</A>
about the man.</P>
<BLOCKQUOTE>
You may all remember the LinuxWorld 2000, when he claimed that Linus T said
that 'FreeBSD is just a handful of programmers'. Linus said NOTHING of the
sort. When Joe was called on this, his reaction was to call BSD supporters
assholes and jerks.
</BLOCKQUOTE>
<P>A <A HREF="http://www.mplayerhq.hu/pipermail/mplayer-users/2001-December/009118.html">quote</A>
from Robert Munro on the
<A HREF="http://mplayerhq.hu/pipermail/mplayer-users/">mplayer-users</A>
mailing list:</P>
<BLOCKQUOTE>
<P>He's interesting, but not good at avoiding, um... controversy. Joe Barr
used to be one of the regulars on Will Zachmann's Canopus forum on Compuserve,
years ago. He was an OS/2 advocate then (I was an OS/2 fan too).</P>
<P>He used to go over-the-top, flaming people, and I suspect he had some hard
times, then. He's mellowed some, judging by his columns recently. Moderately
subtle humor was not his mode in those earlier days, not at all.</P>
</BLOCKQUOTE>
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