[Xquartz-dev] X11 vs freeglut 2.6.0-rc1

Sat Apr 25 22:47:46 PDT 2009

That is an "interesting" issue... I'm guessing that freeglut test 
probably has something like:

#ifdef __APPLE__
#define PFNGLGENBUFFERSPROC ...
...
#endif

That's because Apple's OpenGL.framework doesn't use the same naming 
convention for the OpenGL function pointer types as Mesa/Windows does.  
We exist in an awkward state bridging the two... in order to be as 
compatible as possible at the source level, I decided to support both 
conventions.

It looks like the freeglut test tried to be too clever for its own good...

On 04/25/2009 08:22 PM, Jack Howarth wrote:
> On Sat, Apr 25, 2009 at 11:03:03PM -0400, Jack Howarth wrote:
>    
>>     While attempting to build some test packaging for
>> the new freeglut 2.6.0-rc1 release on Intel Darwin,
>> I discovered that their build fails in the freeglut
>> demo programs with the error...
>>
>> Making all in smooth_opengl3
>> gcc -DHAVE_CONFIG_H -I. -I../../..   -I/sw/include -I../../../include -I/usr/X11R6/include -O3 -DTARGET_HOST_POSIX_X11 -c -o smooth_opengl3-smooth_opengl3.o `test -f 'smooth_opengl3.c' || echo './'`smooth_opengl3.c
>> smooth_opengl3.c:101: error: redefinition of typedef 'PFNGLGENBUFFERSPROC'
>> /usr/X11R6/include/GL/gl.h:1884: error: previous declaration of 'PFNGLGENBUFFERSPROC' was here
>> smooth_opengl3.c:104: error: redefinition of typedef 'PFNGLBINDBUFFERPROC'
>> /usr/X11R6/include/GL/gl.h:1882: error: previous declaration of 'PFNGLBINDBUFFERPROC' was here
>> smooth_opengl3.c:107: error: redefinition of typedef 'PFNGLBUFFERDATAPROC'
>> /usr/X11R6/include/GL/gl.h:1886: error: previous declaration of 'PFNGLBUFFERDATAPROC' was here
>> smooth_opengl3.c:110: error: redefinition of typedef 'PFNGLCREATESHADERPROC'
>> /usr/X11R6/include/GL/gl.h:1939: error: previous declaration of 'PFNGLCREATESHADERPROC' was here
>> smooth_opengl3.c:113: error: redefinition of typedef 'PFNGLSHADERSOURCEPROC'
>> /usr/X11R6/include/GL/gl.h:1940: error: previous declaration of 'PFNGLSHADERSOURCEPROC' was here
>> smooth_opengl3.c:116: error: redefinition of typedef 'PFNGLCOMPILESHADERPROC'
>> /usr/X11R6/include/GL/gl.h:1941: error: previous declaration of 'PFNGLCOMPILESHADERPROC' was here
>> smooth_opengl3.c:119: error: redefinition of typedef 'PFNGLCREATEPROGRAMPROC'
>> /usr/X11R6/include/GL/gl.h:1942: error: previous declaration of 'PFNGLCREATEPROGRAMPROC' was here
>> smooth_opengl3.c:122: error: redefinition of typedef 'PFNGLATTACHSHADERPROC'
>> /usr/X11R6/include/GL/gl.h:1943: error: previous declaration of 'PFNGLATTACHSHADERPROC' was here
>> smooth_opengl3.c:125: error: redefinition of typedef 'PFNGLLINKPROGRAMPROC'
>> /usr/X11R6/include/GL/gl.h:1944: error: previous declaration of 'PFNGLLINKPROGRAMPROC' was here
>> smooth_opengl3.c:128: error: redefinition of typedef 'PFNGLUSEPROGRAMPROC'
>> /usr/X11R6/include/GL/gl.h:1945: error: previous declaration of 'PFNGLUSEPROGRAMPROC' was here
>> smooth_opengl3.c:131: error: redefinition of typedef 'PFNGLGETSHADERIVPROC'
>> /usr/X11R6/include/GL/gl.h:1969: error: previous declaration of 'PFNGLGETSHADERIVPROC' was here
>> smooth_opengl3.c:134: error: redefinition of typedef 'PFNGLGETSHADERINFOLOGPROC'
>> /usr/X11R6/include/GL/gl.h:1972: error: previous declaration of 'PFNGLGETSHADERINFOLOGPROC' was here
>> smooth_opengl3.c:137: error: redefinition of typedef 'PFNGLGETPROGRAMIVPROC'
>> /usr/X11R6/include/GL/gl.h:1970: error: previous declaration of 'PFNGLGETPROGRAMIVPROC' was here
>> smooth_opengl3.c:140: error: redefinition of typedef 'PFNGLGETPROGRAMINFOLOGPROC'
>> /usr/X11R6/include/GL/gl.h:1973: error: previous declaration of 'PFNGLGETPROGRAMINFOLOGPROC' was here
>> smooth_opengl3.c:143: error: redefinition of typedef 'PFNGLGETATTRIBLOCATIONPROC'
>> /usr/X11R6/include/GL/gl.h:1981: error: previous declaration of 'PFNGLGETATTRIBLOCATIONPROC' was here
>> smooth_opengl3.c:146: error: redefinition of typedef 'PFNGLVERTEXATTRIBPOINTERPROC'
>> /usr/X11R6/include/GL/gl.h:1930: error: previous declaration of 'PFNGLVERTEXATTRIBPOINTERPROC' was here
>> smooth_opengl3.c:149: error: redefinition of typedef 'PFNGLENABLEVERTEXATTRIBARRAYPROC'
>> /usr/X11R6/include/GL/gl.h:1931: error: previous declaration of 'PFNGLENABLEVERTEXATTRIBARRAYPROC' was here
>> smooth_opengl3.c:152: error: redefinition of typedef 'PFNGLGETUNIFORMLOCATIONPROC'
>> /usr/X11R6/include/GL/gl.h:1974: error: previous declaration of 'PFNGLGETUNIFORMLOCATIONPROC' was here
>> smooth_opengl3.c:155: error: redefinition of typedef 'PFNGLUNIFORMMATRIX4FVPROC'
>> /usr/X11R6/include/GL/gl.h:1966: error: previous declaration of 'PFNGLUNIFORMMATRIX4FVPROC' was here
>> smooth_opengl3.c: In function 'main':
>> smooth_opengl3.c:425: error: 'GLUT_FORWARD_COMPATIBLE' undeclared (first use in this function)
>> smooth_opengl3.c:425: error: (Each undeclared identifier is reported only once
>> smooth_opengl3.c:425: error: for each function it appears in.)
>> smooth_opengl3.c:425: error: 'GLUT_DEBUG' undeclared (first use in this function)
>> make[4]: *** [smooth_opengl3-smooth_opengl3.o] Error 1
>> make[3]: *** [all-recursive] Error 1
>> make[2]: *** [all-recursive] Error 1
>> make[1]: *** [all-recursive] Error 1
>>
>> This appears to be coming from the definitions that exist in our gl.h. These definitions don't exist in the
>> gl.h of Fedora 10 but are in glext.h instead. I noticed we have the comment...
>>
>> /* The following macros exist to address conflicts between the names given to
>>   * function pointers by the MESA API and OpenGL.framework's API.
>>   */
>>
>> We should probably make the freeglut developers aware of this issue so we don't have to
>> heavily patch the freeglut 2.6.0 release. Any particular comments on this?
>>                          Jack
>>      
>
> Disabling the problem demo, I am able to completely build the freeglut 2.6.0-rc1 under
> fink unstable and it appears to run all the pre-existing binaries without issue as drop
> in replacement for 2.4.0. I have no issues with pymol, molmol or ccpnmr built against
> fink's freeglut. If anyone is interested, here is the freeglut.info file I used in
> fink unstable...
>
> Package: freeglut
> Version: 2.6.0
> Revision: 0rc1
> Maintainer: Jack Howarth<howarth at bromo.med.uc.edu>
> Source: mirror:sourceforge:freeglut/%N-%v-rc1.tar.gz
> Source-MD5: b1a8107f99b5d953e8418a5409462294
> SourceDirectory: %n-%v
> Depends: %N-shlibs (= %v-%r)
> BuildDepends: fink (>= 0.24.12), x11-dev
> Conflicts: glut, openglut
> Replaces: glut, openglut
> ConfigureParams: --disable-replace-glut --disable-warnings --disable-dependency-tracking --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib RANLIB='ranlib -c' --build=%m-apple-darwin`uname -r|cut -f1 -d.` --host=%m-apple-darwin`uname -r|cut -f1 -d.`
> SetCFLAGS: -O3 -DTARGET_HOST_POSIX_X11
> SetLDFLAGS: -Wl,-dylib_file,/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib:/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib
> PatchScript:<<
>    perl -pi -e 's/hardcode_direct=yes/hardcode_direct=no/g' configure
>    perl -pi -e 's/ smooth_opengl3//g' ./progs/demos/Makefile.in
> <<
> DocFiles: AUTHORS COPYING ChangeLog INSTALL NEWS README TODO
> BuildDependsOnly: True
> InstallScript:<<
> make install DESTDIR=%d
> ln -s libfreeglut.3.dylib %i/lib/libglut.dylib
> ln -s libfreeglut.a %i/lib/libglut.a
> ln -s libfreeglut.la %i/lib/libglut.la
> ln -s freeglut.h %i/include/GL/glut.h
> ln -s freeglut_ext.h %i/include/GL/glut_ext.h
> ln -s freeglut_std.h %i/include/GL/glut_std.h
> <<
> SplitOff:<<
>   Package: %N-shlibs
>   Depends: libgl, x11
>   Files: lib/libfreeglut.3.9.0.dylib lib/libfreeglut.3.dylib
>   Shlibs: %p/lib/libfreeglut.3.dylib 13.0.0 %n (>= 2.6.0-Orc1)
>   DocFiles: AUTHORS COPYING ChangeLog INSTALL NEWS README TODO
> <<
> Description: Opengl utility toolkit
> DescDetail:<<
> Freeglut is a completely OpenSourced alternative to the OpenGL Utility
> Toolkit (GLUT) library released under the X-Consortium license. The
> original GLUT library seems to have been abandoned with the most recent
> version (3.7) dating back to August 1998. Its license does not allow
> anyone to distribute modified library code. Freeglut is actively
> developed and doesn't suffer the license restrictions. The goal is
> to gradually depreciate the current glut package out of fink replacing
> it with freeglut.
> <<
> DescPackaging:<<
> This package is NOT binary compatible with glut/glut-shlibs and can not
> replace for them. Packages that wish to use freeglut as a replacement
> for glut cannot have "BuildDepends: glut|freeglut" and "Depends:
> glut-shlibs|freeglut-shlibs" in their info file, but need to pick one
> self-consistently.
>
> This package builds the freeglut libraries named as freeglut rather than
> glut to allow the co-existance with glut since the shared library versioning
> is identical. I have adopted the use of symlinks for the libraries and
> headers to allow freeglut to used as a drop in replace for glut without
> requiring changes in the source code of programs which require glut.
>
> Patch fixes crash in flightgear (taken from RH's Fedora 7 package).
> <<
> License: OSI-Approved
> Homepage: http://freeglut.sourceforge.net/
>
> _______________________________________________
> Xquartz-dev mailing list
> Xquartz-dev at lists.macosforge.org
> http://lists.macosforge.org/mailman/listinfo.cgi/xquartz-dev
>    

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.macosforge.org/pipermail/xquartz-dev/attachments/20090425/04276029/attachment-0001.html>