llvm dev - Dec 2009 - [LLVMdev] Fwd: Linking fails when compiling files that use llvm routines

Hi,

I 've built llvm 2.6 in linux, and then i installed it in the system
by 'make install'. However, when i try to compile a file that uses
llvm routines and libraries (by giving the command: "{compiler}
`llvm-config --cxxflags --ldflags --libs all -o Test test.cpp" where i
tried both llvm-g++ and g++ in the {compiler} field), the linking
fails and an "undefined reference to llvm::some_llvm_routine()" error
message is raised. The lib files are actually placed in the
/usr/local/lib directory, but they seem as they do not exist or
something? I would appreciate it very much if any help could be
provided.

Cheers,
Yannis Mantzouratos.

Hi Yannis,

It looks like you're missing a second back-quote before the -o.  Is that
exactly what you've been typing?  Have you tried typing llvm-config by
itself to see what is supposed to link in?

--Sam



----- Original Message ----
> From: Yannis Mantzouratos <giannismantz at gmail.com>
> To: llvmdev at cs.uiuc.edu
> Sent: Tue, December 29, 2009 1:31:59 PM
> Subject: [LLVMdev] Fwd: Linking fails when compiling files that use llvm
routines
> 
> Hi,
> 
> I 've built llvm 2.6 in linux, and then i installed it in the system
> by 'make install'. However, when i try to compile a file that uses
> llvm routines and libraries (by giving the command: "{compiler}
> `llvm-config --cxxflags --ldflags --libs all -o Test test.cpp" where i
> tried both llvm-g++ and g++ in the {compiler} field), the linking
> fails and an "undefined reference to llvm::some_llvm_routine()"
error
> message is raised. The lib files are actually placed in the
> /usr/local/lib directory, but they seem as they do not exist or
> something? I would appreciate it very much if any help could be
> provided.
> 
> Cheers,
> Yannis Mantzouratos.
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev

Hi Sam,

That was a typo, i was actually typing "{compiler} `llvm-config
--cxxflags --ldflags --libs all` -o Test test.cpp". I have already
tried typing llvm-config by itself and everything seemed as expected,
so i suppose that the problem isn't there.

Thanks,
Yannis

PS: that "Fwd:" in the thread subject is also a nice example of typo
:-)

2009/12/30 Samuel Crow <samuraileumas at
yahoo.com>:
> Hi Yannis,
>
> It looks like you're missing a second back-quote before the -o.  Is
that exactly what you've been typing?  Have you tried typing llvm-config by
itself to see what is supposed to link in?
>
> --Sam
>