[LLVMdev] datapoint for recent llvm-gcc4 build failures

[Reid Spencer]

Gentlemen,

>From the GettingStarted.html guide:

GCC 4.1.1: GCC fails to build LLVM with template concept check errors
compiling some files. At the time of this writing, GCC mainline (4.2)
did not share the problem.

I continue to use 3.4.6 because of 4.1.X failures and because it is
*very* slow to compile LLVM. Its not clear that 4.2 will fix the slow
compilation problems (lots of related GCC bugs still not fixed).

Reid.

On Fri, 2006-11-10 at 10:32 +1100, Warren Armstrong wrote:
> Andrew Purtell wrote:
> > I routinely fetch the latest LLVM and LLVM-GCC4 and recompile, perhaps every few days or so. I've not had success in some cases building LLVM-GCC4 on a Gentoo Linux host, for perhaps the last week or so. My system compiler is GCC 4.1.1.
> >
> >   
> > cc1: /usr/src/llvm/llvm/include/llvm/Target/TargetInstrInfo.h:151:const llvm::TargetInstrDescriptor& llvm::TargetInstrInfo::get(llvm::MachineOpCode) const: Assertion '(unsigned)Opcode < NumOpcodes' failed.
> > /usr/src/llvm/llvm-gcc4/gcc/crtstuff.c: At top level:
> > /usr/src/llvm/llvm-gcc4/gcc/crtstuff.c:314: internal compiler error: Aborted
> > <<<
> >   
> 
> Hi Andrew,
> 
> I too ran into this bug, which can be sidestepped by building LLVM with
> optimisation
> at the -O2 level (rather than the default -O3).  My make command was:
> make ENABLE_OPTIMIZED=1 OPTIMIZE_OPTION='-O2 -g' tools-only
> 
> I was trying to track down the cause of the bug, but haven't had success
> yet.
> 
> Hope this is useful.
> 
> Cheers,
> Warren
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