When I attempt to emerge xscreensaver, gle always bombs out with:

checking for shmat... yes
checking for IceConnectionNumber in -lICE... yes
checking for glGetError in -lGL... no
configure: error: Cannot find required GL library

!!! ERROR: media-libs/gle-3.0.1-r2 failed.
!!! Function econf, Line 449, Exitcode 1
!!! econf failed
!!! If you need support, post the topmost build error, NOT this status
message.


So I figured I was just missing some opengl library some where. I
emerged opengl-update, (didn't fix the issue), I did an emerge opengl
and it installed some nvidia driver, (not too sure what the deal is
there but...), didn't fix the issue.

I thought it might be my USE flag,
(http://www.gentoo.org/doc/en/handboo...?part=2&chap=2
has a blurb about opengl), so I tried building gle with:

USE="opengl" emerge gle

but the same error. Does anyone know what library I need here or what I
need to emerge to fix this?

Thanks

-Cam

cameron enlightened us with:
> checking for shmat... yes
> checking for IceConnectionNumber in -lICE... yes
> checking for glGetError in -lGL... no
> configure: error: Cannot find required GL library

Check the config.log to see what's going on. You can find it in the
work directory, probably something like /var/tmp/gle-3.0.1-r2/work.

> I thought it might be my USE flag,
> (http://www.gentoo.org/doc/en/handboo...?part=2&chap=2
> has a blurb about opengl), so I tried building gle with:
>
> USE="opengl" emerge gle

Never use that! Read "man portage", and use /etc/portage/package.use.

Sybren
--
The problem with the world is stupidity. Not saying there should be a
capital punishment for stupidity, but why don't we just take the
safety labels off of everything and let the problem solve itself?

The config.log has:

..... snip ....
configure:3400: gcc -o conftest -O2 -march=i686 -fomit-frame-pointer
-pipe -Wall conftest.c -lGL -lSM -lICE -L/usr/X11R6/lib -lX11 -
lm 1>&5
/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/../../../../i686-pc-linux-gnu/bin/ld:
cannot find -lGL
collect2: ld returned 1 exit status
configure: failed program was:
#line 3389 "configure"
#include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2
builtin and then its argument prototype would still apply. */
char glGetError();

int main() {
glGetError()
; return 0; }

Even with this error, still not sure what to do about it....

-Cam


Sybren Stuvel wrote:
> cameron enlightened us with:
>
>>checking for shmat... yes
>>checking for IceConnectionNumber in -lICE... yes
>>checking for glGetError in -lGL... no
>>configure: error: Cannot find required GL library
>
>
> Check the config.log to see what's going on. You can find it in the
> work directory, probably something like /var/tmp/gle-3.0.1-r2/work.
>
>
>>I thought it might be my USE flag,
>>(http://www.gentoo.org/doc/en/handboo...?part=2&chap=2
>>has a blurb about opengl), so I tried building gle with:
>>
>>USE="opengl" emerge gle
>
>
> Never use that! Read "man portage", and use /etc/portage/package.use.
>
> Sybren

cameron enlightened us with:
> cannot find -lGL

Try playing around with opengl-update. XOrg comes with it's own GL
libs if I'm not mistaken.


Sybren
--
The problem with the world is stupidity. Not saying there should be a
capital punishment for stupidity, but why don't we just take the
safety labels off of everything and let the problem solve itself?

The directory
/usr/lib/opengl/xorg-x11/lib/
only had 1 file in it so I re-emerged xorg-x11 and it added 5 more files
to that dir. The compile then worked fine. I have no idea what
originally happened to those files, but it is all good now.

Thanks

-Cam

Sybren Stuvel wrote:
> cameron enlightened us with:
>
>>cannot find -lGL
>
>
> Try playing around with opengl-update. XOrg comes with it's own GL
> libs if I'm not mistaken.
>
>
> Sybren

I found this thread via Google and while my problem was the same, the
conditions were different so I figured I'd post to help anyone else
that has the same issues. I was trying to emerge Gnome, and as part of
that did xscreensaver (the gle package also gives the same error). I
ran into the exact same problems as the original poster, but had a
different solution.

I ran *opengl-update --get-implementation * and found out that even
though I had rebuilt opengl, it was still using an older ATI
implementation that came along with some drivers. (You might see
nvidia if using one of thost cards). I ran *opengl-update xorg-x11 *
which changed me back to the x11 implementation, then tried emerging
gle and it worked fine. I was then able to emerge xscreensaver with no
problems.

Hurrah!


--
drnick