Created attachment 75423 [details] [review]
My patch

I'm using Mesa 9.0.3 on Linux, built with automake.

llvmpipe uses llvm::JITEventListener::createOProfileJITEventListener if LLVM    
was compiled with OProfile support, so it needs to link with                    
libLLVMOProfileJIT -- i.e. include oprofilejit in the list of LLVM components required in configure.ac, if it exists.

There's already a similar test for mcjit; duplicating this for oprofilejit works for me. Patch to this effect attached, but you may prefer a different fix.

Without this, I get the following link error:

gmake[5]: Entering directory `/src/x11/mesa/work/Mesa-9.0.3/src/gallium/drivers/llvmpipe'
g++ -Wl,-O2 -Wl,--as-needed -Wl,-O2 -Wl,--as-needed -L/gar/packages/llvm-3.2/lib  -lbfd -lpthread -ldl -lm  -lopagent -L/gar/lib/oprofile -Wl,-rpath,/gar/lib/oprofile lp_test_format.o lp_test_main.o -o lp_test_format -Wl,--start-group  -L../../auxiliary/ -lgallium libllvmpipe.a -lLLVMMCJIT -lLLVMBitWriter -lLLVMX86Disassembler -lLLVMX86CodeGen -lLLVMSelectionDAG -lLLVMAsmPrinter -lLLVMX86AsmParser -lLLVMMCParser -lLLVMX86Desc -lLLVMX86Info -lLLVMX86AsmPrinter -lLLVMX86Utils -lLLVMJIT -lLLVMRuntimeDyld -lLLVMExecutionEngine -lLLVMCodeGen -lLLVMScalarOpts -lLLVMInstCombine -lLLVMTransformUtils -lLLVMipa -lLLVMAnalysis -lLLVMTarget -lLLVMMC -lLLVMObject -lLLVMCore -lLLVMSupport -L/gar/lib -lXext -lXdamage -lXfixes -lX11-xcb -lX11 -lxcb-glx -lxcb -lXxf86vm  -L/gar/lib -ldrm  -lm -lpthread -ldl -Wl,--end-group
../../auxiliary//libgallium.a(lp_bld_misc.o): In function `lp_register_oprofile_jit_event_listener':
lp_bld_misc.cpp:(.text+0x1c): undefined reference to `llvm::JITEventListener::createOProfileJITEventListener()'
collect2: error: ld returned 1 exit status
gmake[5]: *** [lp_test_format] Error 1
gmake[5]: Leaving directory `/src/x11/mesa/work/Mesa-9.0.3/src/gallium/drivers/llvmpipe'

I guess this error doesn't show up for people who've got LLVM built as one large library, which isn't the default configuration.