[LLVMdev] [LLVMDev] Trouble Linking

[Jeff Kunkel]

Ah,HA! Solution!
Step 3 is incorrect. I should not add it to the file
"llvm\include\llvm\LinkAllPasses.h" but to the file
"C:\llvm\include\llvm\CodeGen\LinkAllCodegenComponents.h."

It was a simple linker error.

As for visual studio and cmake, yes cmake does overwrite my solutions
when I update my sources. However, svn, cmake and visual studio does a
very good job of not overwriting my code. There was no harm or
problems in keeping my code up to date and developing my code out of
the tree and linking into the tree.

Thanks,
Jeff Kunkel

On Fri, Oct 15, 2010 at 4:16 PM, Jeff Kunkel <jdkunk3 at gmail.com> wrote:
> I'm sorry, I don't know what you were looking for. The first 5 were
> scattered amidst different e-mails. The others have to do with
> following what "RAFast" and "RALinScan" as examples. It's a linker
> error, and I do not know why only opt and bugpoint does not compiler,
> and why llc does not show my reg alloc pass anymore. It worked before
> the API change e-mail was released.
>
> 1) I created my .cpp file RegAllocJDKunk.cpp in llvm/lib/CodeGen/ directory.
> 2) I updated the CMakeList.txt in the directory llvm/lib/CodeGen/ to
> include RegAllocJDKunk.cpp.
> 3) I added "(void) llvm::createJDKunkRegisterAllocator();" to the
> struct ForcePassLinking::ForcePassLinking() method in
> "llvm\include\llvm\LinkAllPasses.h"
> 4) I added "FunctionPass* createJDKunkRegisterAllocator();" to header
> "llvm\CodeGen\Passes.h."
> 5) I implemented "FunctionPass* createJDKunkRegisterAllocator()" in my cpp file.
> 6) I added "initializeRAJDKunk(Registry);" to
> llvm/lib/CodeGen/CodeGen.cpp in the "void
> llvm::initializeCodeGen(PassRegistry &Registry)"
> 7) I added "void initializeRAJDKunk(PassRegistry&);" to the header
> file "llvm\include\llvm\InitializePasses.h."
> 8) Cmake ran, and Visaul Studio build all but opt and bugpoint because
> of the errors at the bottom of this message.
> 9) I don't know why this does not link anymore. I remember it worked
> before the API change e-mail was sent, so I assumed I missed something
> with the api change. This is the only reason I can see.
>
> 2>     Creating library C:/Users/JDKunk/Documents/Visual Studio
> 2010/Projects/VSllvm/lib/Debug/bugpoint.lib and object
> C:/Users/JDKunk/Documents/Visual Studio
> 2010/Projects/VSllvm/lib/Debug/bugpoint.exp
> 2>bugpoint.obj : error LNK2019: unresolved external symbol "class
> llvm::FunctionPass * __cdecl
> llvm::createJDKunkRegisterAllocator(void)"
> (?createJDKunkRegisterAllocator at llvm@@YAPAVFunctionPass at 1@XZ)
> referenced in function "public: __thiscall `anonymous
> namespace'::ForcePassLinking::ForcePassLinking(void)"
> (??0ForcePassLinking@?A0xb2143f5b@@QAE at XZ)
>
> 4>     Creating library C:/Users/JDKunk/Documents/Visual Studio
> 2010/Projects/VSllvm/lib/Debug/opt.lib and object
> C:/Users/JDKunk/Documents/Visual Studio
> 2010/Projects/VSllvm/lib/Debug/opt.exp
> 4>opt.obj : error LNK2019: unresolved external symbol "class
> llvm::FunctionPass * __cdecl
> llvm::createJDKunkRegisterAllocator(void)"
> (?createJDKunkRegisterAllocator at llvm@@YAPAVFunctionPass at 1@XZ)
> referenced in function "public: __thiscall `anonymous
> namespace'::ForcePassLinking::ForcePassLinking(void)"
> (??0ForcePassLinking@?A0x853fd888@@QAE at XZ)
>
> On Fri, Oct 15, 2010 at 3:10 PM, Óscar Fuentes <ofv at wanadoo.es> wrote:
>> Jeff Kunkel <jdkunk3 at gmail.com> writes:
>>
>>> I ran cmake to build the visual studio projects. Then I included my
>>> code under the Visual Studio interface, but I placed my code separate
>>> from the CodeGen code. Visual studio was smart enough to compile and
>>> link in my code into the CodeGen library. Thus, I did not need to add
>>> my code into the same directory as the CodeGen files, and I did not
>>> need to change the CMakeList.txt.
>>
>> Next time you update your LLVM sources, that VS solution will be
>> overwritten.
>>
>>> The offical name is LLVMCodeGen.
>>>
>>> However, the "opt.obj" and "bugpoint.obj" cannot find the reference
>>> function "llvm::createJDKunkRegisterAllocator." I added this file to
>>> the header described previously. I implemented it, in my
>>> RegAllocJDKunk.cpp file.
>>
>> As you do not provide the information I asked for, I can't help you
>> anymore.
>>
>>
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>