[LLVMdev] Question on link error

[Ted Neward]

 (*) hello.s was created as per what’s on the LLVM page:

 

Ted at XPLanguages /cygdrive/c/Projects/Exploration/llvm

$ llc hello.bc -o hello.s

 

(*) gcc is llvm-gcc, compiled from the llvm-gcc-4.2 source tree:

 

Ted at XPLanguages /cygdrive/c/Projects/Exploration/llvm

$ gcc --version

gcc (GCC) 4.2.1 (Based on Apple Inc. build 5546) (LLVM build)

Copyright (C) 2007 Free Software Foundation, Inc.

This is free software; see the source for copying conditions.  There is NO

warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 

(*) Yes, I compiled hello.s -> hello.native using llvm-gcc, since that’s
what’s on the PATH ahead of the original Cygwin gcc. Hello.native also runs
just fine.

 

Ted Neward

Java, .NET, XML Services

Consulting, Teaching, Speaking, Writing

HYPERLINK "http://www.tedneward.com"http://www.tedneward.com

 

From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On
Behalf Of Chris Lattner
Sent: Thursday, February 14, 2008 7:12 PM
To: LLVM Developers Mailing List
Subject: Re: [LLVMdev] Question on link error

 

 

On Feb 14, 2008, at 6:54 PM, Ted Neward wrote:





So I’ve built llvm-2.2 using Cygwin, and I think I’ve got all the right bits
in the right places, but I’m getting a strange error when running through
the hello.c examples from the Web site:

 

How did you create hello.s?  What version of llvm-gcc are you using?  4.2?
Have you tried compiling hello.s to hello.native with llvm-gcc instead of
gcc?

 

-Chris






 

Ted at XPLanguages /cygdrive/c/Projects/Exploration/llvm

$ gcc hello.s -o hello.native

 

Ted at XPLanguages /cygdrive/c/Projects/Exploration/llvm

$ ls

hello.bc  hello.c*  hello.exe*  hello.native*  hello.s

 

Ted at XPLanguages /cygdrive/c/Projects/Exploration/llvm

$ ./hello.native

hello world

 

Ted at XPLanguages /cygdrive/c/Projects/Exploration/llvm

$ lli hello.bc

ERROR: Program used external function '__main' which could not be resolved!

Aborted

 

 

Is there something Really Really Simple (TM) that I’m missing here? AFAIK,
__main is supposed to be inside hello.bc, so why can’t lli find it?

 

 

 

Ted Neward

Java, .NET, XML Services

Consulting, Teaching, Speaking, Writing

HYPERLINK "http://www.tedneward.com"http://www.tedneward.com

 

 

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