[LLVMdev] Building LLVM 2.5 on CENTOS 5.3

Sarah Thompson sarah at findatlantis.com
Tue Apr 28 16:43:24 PDT 2009

OK, that got much further, but I'm now seeing another problem which  
may (or may not) be related. Building my own code (my model checker),  
it builds libraries fine, then within tools (I'm using a fairly  
standard LLVM build environment here), I am seeing the error

	*** llvm-config doesn't exist - rebuilding it

followed by a

	make: Entering an unknown directory

which is complaining about .../tools//bin/llvm-config

This didn't happen when I was building with gcc 4.1.x, though of  
course, my code didn't actually work when compiled with that compiler.


On Apr 28, 2009, at 4:01 PM, Dale Johannesen wrote:

> On Apr 28, 2009, at 3:45 PMPDT, Sarah Thompson wrote:
>> Hi Folks,
>> I'm having some difficulties getting LLVM to build and work correctly
>> on CENTOS 5.3. This is basically tracked down easily enough to CENTOS
>> using GCC 4.1.x by default, which is known-buggy and known not to  
>> work
>> with LLVM -- I was getting the well-known problem with aborts due  
>> to a
>> non-empty symbol table. I have installed the gcc43 package via yum
>> (I'm trying to stick to known packages because I need to roll this  
>> out
>> at some point), which installs a gcc43 executable. Is there any
>> configure magic available that will make it possible to get the LLVM
>> build system to pick up gcc43 rather than the default gcc? Symlinking
>> it didn't work, because I suspect it was still picking up the old
>> libraries and headers. This is preferable to requiring users to
>> significantly hack their environment.
> I haven't tried it, but comments in 'configure' suggest the CC and CXX
> environment variables should work.
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