llvm dev - May 2011 - [LLVMdev] How to identify LLVM version?

Hi, all

I'd like to write a code that can build different codes based on LLVM
version.
Like code snippets in the below. 

#ifdef __LLVM_29__
   PHINode *PN = Builder.CreatePHI (Type::getDoubleTy(getGlobalContext()), 2,
"iftmp");
#elif __LLVM_28__
   PHINode *PN = Builder.CreatePHI (Type::getDoubleTy(getGlobalContext()),
"iftmp");
#else
   assert ("wrong version");
#endif

I've been trying to find something like these (__LLVM_29__, __LLVM_28__),
but I couldn't find them yet.

Thanks for your help. 
Regard, Kangkook

Kangkook Jee <aixer77 at gmail.com> writes:
> Hi, all
>
> I'd like to write a code that can build different codes based on LLVM
version.
> Like code snippets in the below. 
>
> #ifdef __LLVM_29__
>    PHINode *PN = Builder.CreatePHI (Type::getDoubleTy(getGlobalContext()),
2, "iftmp");
> #elif __LLVM_28__
>    PHINode *PN = Builder.CreatePHI (Type::getDoubleTy(getGlobalContext()),
"iftmp");
> #else
>    assert ("wrong version");
> #endif
>
> I've been trying to find something like these (__LLVM_29__,
> __LLVM_28__), but I couldn't find them yet.
llvm/Config/config.h defines PACKAGE_VERSION to a string like "3.0",
but
I'm afraid that it is not very convenient for your purposes.

To the developers: maybe it is a good idea to define something like
LLVM_MAJOR_VERSION and LLVM_MINOR_VERSION ? Preferably in llvm-config.h

Hi Óscar,
> To the developers: maybe it is a good idea to define something like
> LLVM_MAJOR_VERSION and LLVM_MINOR_VERSION ? Preferably in llvm-config.h
probably it's best to just go ahead and implement this (with PACKAGE_VERSION
being auto-computed from these) and see if anyone objects :)

Ciao, Duncan.