| Summary: |
glapi_x86.o is missing symbol glMultiTexCoord3sv, which causes glxinfo compile to fail |
| Product: |
xorg
|
Reporter: |
Soren Harward <soren> |
| Component: |
Server/Ext/GLX | Assignee: |
Xorg Project Team <xorg-team> |
| Status: |
RESOLVED
WORKSFORME
|
QA Contact: |
|
| Severity: |
normal
|
|
|
| Priority: |
high
|
CC: |
ajax
|
| Version: |
6.8.0 | |
|
| Hardware: |
x86 (IA32) | |
|
| OS: |
Linux (All) | |
|
| Whiteboard: |
|
|
i915 platform:
|
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i915 features:
|
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|---|
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This all started trying to install Xorg from the Gentoo ebuilds. glxinfo was failing to compile with the error "undefined reference to 'glMultiTexCoord3sv'" I eventually traced this symbol back to lib/GL/GL/libGL.so, and it gets linked into libGL.so from the file lib/GL/glx/glapi_x86.o . Running 'nm' on glapi_x86.o shows the following: [truncated] 00005b20 T glMultiTexCoord3d 00003100 T glMultiTexCoord3dARB 00005b40 T glMultiTexCoord3dv 00003120 T glMultiTexCoord3dvARB 00005b60 T glMultiTexCoord3f 00003140 T glMultiTexCoord3fARB 00005b80 T glMultiTexCoord3fv 00003160 T glMultiTexCoord3fvARB 00005ba0 T glMultiTexCoord3i 00003180 T glMultiTexCoord3iARB 00005bc0 T glMultiTexCoord3iv 000031a0 T glMultiTexCoord3ivARB 00005be0 T glMultiTexCoord3s 000031c0 T glMultiTexCoord3sARB U glMultiTexCoord3sv 000031e0 T glMultiTexCoord3svARB [truncated] The symbol glMultiTexCoord3sv seems to be missing entirely from the compiled file. In trying to fix this, I started grep'ing around for other files with the glMultiTexCoord3sv symbol. I noticed that lib/GL/glx/vertarr.o had the symbols matching "__indirect_glMultiTexCoord[124][dfis]vARB", but the ones matching "__indirect_glMultiTexCoord3[dfis]vARB" were entirely missing. I traced this back to a problem in line 91 of vertarr.c, which has: texCoordPointer->mtex_proc = (void (*)(GLenum, const void *))glMultiTexCoord4##let##vARB; \ which I think should be texCoordPointer->mtex_proc = (void (*)(GLenum, const void *))glMultiTexCoord3##let##vARB; \ instead (notice the change from MultiTexCoord4 to MultiTexCoord3). This got all the "__indirect_glMultiTexCoord3[dfis]vARB" symbols into vertarr.o, but didn't solve the problem with the glMultiTexCoord3sv symbol missing entirely from glapi_x86.o, I wish I knew enough assembly to be able to say why, but I just don't. I'm running Gentoo, using gcc-3.3.2 (Gentoo package 3.3.2-r5 if anyone's really curious). I wouldn't totally rule out compiler error; the reason I'm still using 3.3.2 on Gentoo is because I've had newer versions puke on kernel compiles. And before anyone dismisses this bug as an "overoptimizations error," I'm using just -O2 and -march=pentium3. I've also verified this bug using a clean 6.8.0 tree, not a Gentoo-patched one, without any compiler optimizations at all, so I know it's not a problem with any of Gentoo's custom patches or the ebuild. Seeing as how glapi_x86.S hasn't changed between 6.8.0 and 6.8.2, I imagine that this bug still exists in 6.8.0. If needed, I can try to compile the 6.8.2 tree and verify this. Interestingly enough, I just noticed that in 6.8.2, vertarr.c:91 is texCoordPointer->mtex_proc = (void (*)(GLenum, const void *))glMultiTexCoord2##let##vARB; \ which has a 2 where the 4 used to be, and where I had put a 3.