[LLVMdev] [patch] Fix problems with build LLVM using gcc 4.1.0(gcc CVS mainline)

[Chris Lattner]

On Mon, 24 Oct 2005, Vladimir A. Merzliakov wrote:
>>> 2) Same error but some diff. problem with AlphaCodeEmitter.cpp and 
>>> PPCCodeEmitter.cpp:
>>> 
>>> GCC don't like definition member-functions in global namespace with 
>>> declaration  in llvm::<unnamed> :
>
> Sorry for wrong comment.
> Must be:
> GCC 4.1.0 don't like definition member-functions in llvm namespace with 
> declaration  in <global>::<unnamed> namespace

Ahhh, ok, I see.  I just applied a patch to SparcV8.  With it, does this 
patch fix the problem?

===================================================================
RCS file: /home/vadve/shared/PublicCVS/llvm/utils/TableGen/CodeEmitterGen.cpp,v
retrieving revision 1.41
diff -u -r1.41 CodeEmitterGen.cpp
--- CodeEmitterGen.cpp  19 Aug 2005 01:04:33 -0000      1.41
+++ CodeEmitterGen.cpp  24 Oct 2005 06:40:56 -0000
@@ -76,7 +76,7 @@
    std::vector<Record*> Insts = Records.getAllDerivedDefinitions("Instruction");

    EmitSourceFileHeader("Machine Code Emitter", o);
-  o << "namespace llvm {\n\n";
+  //o << "namespace llvm {\n\n";
    std::string Namespace = Insts[0]->getValueAsString("Namespace") + "::";

    // Emit function declaration
@@ -256,5 +256,5 @@
      << "  return Value;\n"
      << "}\n\n";

-  o << "} // End llvm namespace \n";
+  //o << "} // End llvm namespace \n";
  }

-Chris


> For example
>
> PPCCodeEmitter.cpp:
>
> using namespace llvm;
>
> namespace {
> class PPCCodeEmitter : public MachineFunctionPass {
>   ...
>  }
> ...
> }
> ...
> #include "PPCGenCodeEmitter.inc"
>
> But PPCCodeEmitter.inc:
>
> namespace llvm {
> ...
> } // end llvm namespace
>
> As result LLVM build terminate with error:
>
> /usr/home/wanderer/pkg/build/llvm/obj/lib/Target/PowerPC/PPCGenCodeEmitter.inc:11: 
> error: definition of 'unsigned 
> int<unnamed>::PPCCodeEmitter::getBinaryCodeForInstr(llvm::MachineInstr&)' is 
> not in namespace enclosing '<unnamed>::PPCCodeEmitter'
>
> After adding "namespace llvm {" in AlphaCodeEmitter.cpp
> gcc 4.1.0 terminate build with error:
> /home/wanderer/pkg/build/llvm/src/llvm/lib/Target/Alpha/AlphaCodeEmitter.cpp:76: 
> error: explicit qualification in declaration of 'llvm::FunctionPass* 
> llvm::createAlphaCodeEmitterPass(llvm::MachineCodeEmitter&)'
>
> As result I remove llvm:: from line:
> FunctionPass *llvm::createAlphaCodeEmitterPass(MachineCodeEmitter &MCE) {
>
> Vladimir
>
>

-Chris

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