STILL building ephyr

Chuck Robey chuckr at telenix.org
Fri Jul 11 10:53:15 PDT 2008


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Dan Nicholson wrote:
> On Fri, Jul 11, 2008 at 5:54 AM, Chuck Robey <chuckr at telenix.org> wrote:
>> Sure.  note that I left out nothing germane at all, though, did I?  The only cut
>> things were useless repetitions of symbols which would come from the same source
>> as the first one does.  I don't *think* my troubleshooting skills are so poor,
>> it's my autotools wisdom which is stuck in reverse with most of the gear teeth
>> busted off.  Plus, the (very embarrassing fact) that I go slow as molasses,
>> getting in too much pain if I stay too long at the terminal.
> 
> You might think there's no value in seeing the command failing, but if
> it's a bug in the build, there's tons of information there.
> 
>> Anyhow, just to be truly honest, this was a rebuild, from the top, after a
>> thorough cleaning.  I sure wish all of the X-projects used distclean (some use
>> realclean).
> 
> Don't do that just yet. I'm think I found the issue.
> 
>> here it is:
>>
>>
>> gcc -I/usr/X11R7.4/include -I/usr/local/include -rdynamic -o Xephyr ephyrinit.o
>>  -L/usr/X11R7.4/lib -L/usr/local/lib libxephyr.a libxephyr-hostx.a
>> libxephyr-hostxv.a libxephyr-hostdri.a ../../../exa/.libs/libexa.a
>> ../../../dix/.libs/libdix.a ../../../hw/kdrive/src/libkdrive.a
>> ../../../hw/kdrive/src/libkdrivestubs.a ../../../config/libconfig.a
>> ../../../fb/.libs/libfb.a ../../../mi/.libs/libmi.a
>> ../../../xfixes/.libs/libxfixes.a ../../../Xext/.libs/libXext.a
>> ../../../dbe/.libs/libdbe.a ../../../render/.libs/librender.a
>> ../../../randr/.libs/librandr.a ../../../damageext/.libs/libdamageext.a
>> ../../../miext/damage/.libs/libdamage.a ../../../miext/shadow/.libs/libshadow.a
>> ../../../Xi/.libs/libXi.a ../../../xkb/.libs/libxkb.a
>> ../../../xkb/.libs/libxkbstubs.a ../../../composite/.libs/libcomposite.a
>> ../../../os/.libs/libos.a /usr/X11R7.4/lib/libpixman-1.so
>> /usr/local/lib/libhal.so -lGL -lGLU -lGLw /usr/local/lib/libdbus-1.so -pthread
>> /usr/X11R7.4/lib/libXfont.so /usr/local/lib/libfreetype.so
>> /usr/X11R7.4/lib/libfontenc.so -lz /usr/X11R7.4/lib/libXv.so
>> /usr/X11R7.4/lib/libXext.so /usr/X11R7.4/lib/libX11.so
>> /usr/X11R7.4/lib/libXdmcp.so /usr/X11R7.4/lib/libXau.so -lcrypto -lrpcsvc -lm
>> - -Wl,--rpath -Wl,/usr/X11R7.4/lib -Wl,--rpath -Wl,/usr/local/lib -Wl,--rpath
>> - -Wl,/usr/X11R7.4/lib -Wl,--rpath -Wl,/usr/local/lib
>> libxephyr-hostdri.a(ephyrglxext.o)(.text+0x1c): In function
>> `ephyrHijackGLXExtension':
>> : undefined reference to `Single_dispatch_info'

Just before this fell into my email hopper, I'd found the symbol, yes, in
libglx.  Why didn't *I* find it?  Because it haadn't been built yet.  I haven't
yet finished working on this (I have no good reliable method, because I can't
duplicate the autogen.sh step, to redo local parts of the build, so all of my
testing does the whole tree, and takes forever, even on this fast machine, but I
think that the issue is going to involve build order, because even if there'd
been a linking step for libglx.a, it wasn't available to be linked yet.

Hey, if you have a method, I'd appreciate an answer to a question that's nagging
at me ... I have myself a Nvidia-compatible 8600GTS video card.  From what I've
read so far, all of the Mesa (pr OpenGL) stuff is very very low level.  I
*think* it need to be having  code that's quite specific to the actual graphic
card, like I see defines for all of the Radeon stuff, and my own card, the
Nvidia stuff, comes with it's own openGL libs.  What I'm asking is, how is it
possible for there to be a mesa lib at all, why doesn't it need to be localized
to each graphic card?  How could openGL work without having
graphic-card-specific code?

I guess I'm asking, because I've built the public-source mesa directory, but how
could that be possible?

> 
> Xephyr isn't being linked to libglx where this is defined. Something
> weird is going on in configure.ac. I think that KDRIVE_LIBS should
> contain $(top_builddir)/glx/libglx.la right before librender.la. Is
> this on master or server-1.5-branch? Is GLX actually enabled? What
> does configure say about it?
> 
> --
> Dan

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