[LLVMdev] Compiling glibc on Linux

[Babak Salamat]

Thank you Chris.

Actually, I have changed the stack organization in the "llc" source  
codes for x86 target. Thus, I need libraries compiled with the new  
stack organization. If I use llvm-gcc (and apparently also llvmc),  
llc will not be invoked. I was hoping that llvmc would call llvm-gcc  
to compile to bc file and then call llc to compile to native  
assembly, but apparently this doesn't happen.
Do you know of any possible ways to involve llc in compilation of  
libraries?

--Babak

On May 8, 2007, at 11:33 PM, Chris Lattner wrote:

> On Tue, 8 May 2007, Babak Salamat wrote:
>> Yes, I have built and installed llvm-gcc and "llvm-gcc --print-prog-
>> name=cc1" return the correct path for cc1, so I assume its path is
>> set correctly in the config files, but I haven't installed config
>> files separately. Do I need to do that? Is there any documentation
>> about it?
>
> I'd strongly suggest just building with CC=llvm-gcc CXX=llvm-g++.
>
> llvmc is extremely experimental and has not seen wide use.
>
> -Chris
>
>> On May 8, 2007, at 7:33 PM, Reid Spencer wrote:
>>
>>> Babak,
>>>
>>> As its manual page (http://llvm.org/docs/CommandGuide/html/ 
>>> llvmc.html)
>>> states, llvmc is an experimental tool:
>>>
>>> llvmc is considered an experimental LLVM tool because it has these
>>> deficiencies:
>>>
>>> Poor configuration support
>>>         The support for configuring new languages, etc. is weak.  
>>> There
>>>         are many command line configurations that cannot be achieved
>>>         with the current support. Furthermore the grammar is
>>> cumbersome
>>>         for configuration files. Please see http://llvm.org/PR686  
>>> for
>>>         further details.
>>>
>>> That said, you should be able to get it to work with llvm-gcc.
>>>
>>> Did you build llvm-gcc? Did you check the paths in the "c" config
>>> file?
>>> Did you install the config files?
>>>
>>> All of these things need to be done in order for the standard config
>>> file to work.
>>>
>>> Reid.
>>>
>>> On Tue, 2007-05-08 at 18:40 -0700, Babak Salamat wrote:
>>>>   Hi,
>>>>
>>>> I am trying to compile glibc on Linux using llvm. I need to do this
>>>> for a research project.
>>>> The problem is that llvmc doesn't work, and I guess I have to set
>>>> CC=llvmc to get the glic compiled. For some reason llvmc complains
>>>> that it cannot find %llvmcc1%. I have this problem both on my  
>>>> Mac and
>>>> my Linux system. Other tools that I have tested including llvm-gcc
>>>> work without any problem.
>>>> First, I appreciate it if you let me know what can cause this  
>>>> problem
>>>> and second, tell me if you think I have any chance to compile glibc
>>>> using LLVM.
>>>>
>>>> Thank you,
>>>> Babak
>>>>
>>>> ---------------------------------------------------------------
>>>> Babak Salamat
>>>> PhD Student
>>>> Department of Computer Science
>>>> School of Information and Computer Sciences
>>>> University of California, Irvine
>>>> email: bsalamat at uci.edu
>>>> web: www.ics.uci.edu/~bsalamat
>>>> ---------------------------------------------------------------
>>>>
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>
> -Chris
>
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