llvm dev - Dec 2009 - [LLVMdev] Rebuilding LLVM libraries with LLVM-GCC on Windows

"Michael Ness" <mike at liquido2.com> writes:
> Some additional information about the setup may be of interest:
>
> I'm using CMake to generate the make files for MSYS.  All appears to go
well
> until the tools are compiled.
>
> The undefined references seem to be coming from the libraries that were
just
> compiled:
>
>
../../lib/libLLVMBitReader.a(BitcodeReader.cpp.obj):fake:(.rdata$linkonce_ZTVN4llvm8ConstantE+0x10):
> undefined reference to `llvm::Value::dump() const'
>
> Apparently it's not being linked with libLLVMCore.a among other libs.
What's the output of this command:

bin/llvm-config --libs "bitreader asmparser bitwriter instrumentation
scalaropts ipo"

(executed from the root of your build directory)

Does it mention libLLVMCore ? From your command line it seems that CMake
was unable to determine the library dependencies. Either the
dependencies are wrong (hence the llvm-config check above) or the CMake
build is misinterpreting the output of llvm-config.

I don't know how well the LLVM cmake build worked for 2.5. In theory, it
should work the same way as for a unix host. In practice...

-- 
Óscar

Thanks Óscar,

I decided to forget 2.5 and move on to 2.6 which built fine with CMake. 
However, I continue to have problems with llvm-config when using the 
following command:

$ llvm-g++ out.s -o out `llvm-config --ldflags --libs core support system 
x86`

I consistently get undefined reference errors that are from libraries that 
should've been linked already.  The errors change depending on the order of 
the components.  There is obviously dependency issues--references to libs 
that have already been linked.  How do I resolve these dependency problems?

Also, I'm unable to use "llvm-config --libs all" because I receive
the
error: "llvm-config: unknown component name: pic16codegen" 
 llvm-config --components doesn't list pic16codegen, so I'm confused why
it's included with --libs all.

--Mike Ness

--------------------------------------------------
From: "Óscar Fuentes" <ofv at wanadoo.es>
Sent: Tuesday, December 08, 2009 1:31 PM
To: <llvmdev at cs.uiuc.edu>
Subject: Re: [LLVMdev] Rebuilding LLVM libraries with LLVM-GCC on Windows
> "Michael Ness" <mike at liquido2.com> writes:
>
>> Some additional information about the setup may be of interest:
>>
>> I'm using CMake to generate the make files for MSYS.  All appears
to go
>> well
>> until the tools are compiled.
>>
>> The undefined references seem to be coming from the libraries that were
>> just
>> compiled:
>>
>>
../../lib/libLLVMBitReader.a(BitcodeReader.cpp.obj):fake:(.rdata$linkonce_ZTVN4llvm8ConstantE+0x10):
>> undefined reference to `llvm::Value::dump() const'
>>
>> Apparently it's not being linked with libLLVMCore.a among other
libs.
>
> What's the output of this command:
>
> bin/llvm-config --libs "bitreader asmparser bitwriter instrumentation 
> scalaropts ipo"
>
> (executed from the root of your build directory)
>
> Does it mention libLLVMCore ? From your command line it seems that CMake
> was unable to determine the library dependencies. Either the
> dependencies are wrong (hence the llvm-config check above) or the CMake
> build is misinterpreting the output of llvm-config.
>
> I don't know how well the LLVM cmake build worked for 2.5. In theory,
it
> should work the same way as for a unix host. In practice...
>
> -- 
> Óscar
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>

"Michael Ness" <mike at liquido2.com> writes:
> I decided to forget 2.5 and move on to 2.6 which built fine with CMake. 
> However, I continue to have problems with llvm-config when using the 
> following command:
>
> $ llvm-g++ out.s -o out `llvm-config --ldflags --libs core support system 
> x86`
>
> I consistently get undefined reference errors that are from libraries that 
> should've been linked already.  The errors change depending on the
order of
> the components.  There is obviously dependency issues--references to libs 
> that have already been linked.  How do I resolve these dependency problems?
What's the output of

llvm-config --libs x86

?

Take a look at the $LLVM_BUILD_ROOT/bin/llvm-deps script and see if the
library dependencies listed at the end looks normal, i.e. every library
depends on other libraries, with Support and System on almost every
dependency list.
> Also, I'm unable to use "llvm-config --libs all" because I
receive the
> error: "llvm-config: unknown component name: pic16codegen" 
>  llvm-config --components doesn't list pic16codegen, so I'm
confused why
> it's included with --libs all.
Maybe there is a bug on the generation of library dependencies. This may
due to a faulty binutils or perl. Maybe there is a problem with the name
of some components too, they changed names on the last months.

What command line options do you pass to cmake? (variables, switches,
etc).

-- 
Óscar