[Mesa-dev] demos / glew configure bug

[Dave Airlie]

On Thu, Jul 15, 2010 at 6:48 PM, Dan Nicholson <dbn.lists at gmail.com> wrote:
> On Tue, Jul 13, 2010 at 7:42 AM, Brian Paul <brianp at vmware.com> wrote:
>> On 07/13/2010 08:07 AM, Brian Paul wrote:
>>>
>>> I'm setting up the Mesa demos repo on a new system. autogen.sh fails
>>> because it can't find GLEW. I think autogen is looking for GLEW in
>>> /usr/include/GL/ and /usr/lib/libGLEW.a instead of using the copy of
>>> GLEW in the demos tree itself.
>>>
>>> Dan, can you fix that?
>>>
>>>
>>> $ ./autogen.sh
>>> [...]
>>> checking pkg-config is at least version 0.9.0... yes
>>> checking for GL... yes
>>> checking GL/glut.h usability... no
>>> checking GL/glut.h presence... no
>>> checking for GL/glut.h... no
>>> checking for glutInit in -lglut... no
>>> checking for GLEW... no
>>> checking GL/glew.h usability... no
>>> checking GL/glew.h presence... no
>>> checking for GL/glew.h... no
>>> configure: error: GLEW required
>>
>> Digging deeper...  The issue is actually in the configure script (I think).
>>  Even after copying libGLEW.a from Mesa 7.8.2 into /usr/lib/libGLEW.a (which
>> is the same as /usr/lib64/) configure is failing:
>>
>> [...]
>> checking pkg-config is at least version 0.9.0... yes
>> checking for GL... yes
>> checking GL/glut.h usability... no
>> checking GL/glut.h presence... no
>> checking for GL/glut.h... no
>> checking for glutInit in -lglut... no
>> checking for GLEW... no
>> checking GL/glew.h usability... yes
>> checking GL/glew.h presence... yes
>> checking for GL/glew.h... yes
>> checking for glewInit in -lGLEW... no
>> configure: error: GLEW required
>>
>> I wrote a test program that just calls glewInit() and compiled it with 'gcc
>> foo.c -lGLEW -lGL -o foo' and it worked fine.
>
> I'm traveling right now, but I believe the problem is that mesa does
> not install a glew.pc pkgconfig file. You can create one from the
> glu.pc example (or one of the others) and install it in
> /usr/lib/pkgconfig (for x86) or /usr/lib64/pkgconfig (for x86-64).
>
> The check for glew in the demos configure script would be something like:
>
> PKG_CHECK_MODULES([GLEW], [glew])
>
> This would search for glew.pc and then the flags would be stored in
> GLEW_CFLAGS and GLEW_LIBS.
>
> I don't have a chance to fix this for another week or so, but it needs
> a little fixing on the mesa side for glew to be a fully installed
> library like gl or glu.

Well we don't generally install glew from Mesa, we use glew from
upstream in Fedora for example, it now install a pc file, since 1.5.4
I think.

Dave.