[LLVMdev] LLVM 3.2 compilation with RTTI enabled

[Hongxu Chen]

Instead of building all llvm src with rtti, I think you might choose to 
specify
your tool/project/plugin compile options.  This link may be helpful for you
(http://llvm.org/docs/MakefileGuide.html#override-variables).

In one of our projects, we also use boost; and add an additional 
CXXFLAGS option
at the last line of the Makfile in the project folder like below:

     CXXFLAGS += -frtti

Hope this would take effect for you as well :-)



On 03/23/2013 10:55 PM, Pablo Barrio [via LLVM] wrote:
>
>
> Hi all,
>
> I'm having problems compiling LLVM 3.2 with RTTI enabled. Since my code makes heavy use of the Boost libraries, RTTI is a must. This is the script I use to compile (as root):
>
>
> SRC_ROOT=$PWD
> OBJ_ROOT=/export/apps/llvm
> INSTALL_ROOT=/usr/local
>
> mkdir -p $OBJ_ROOT
>
> cd $OBJ_ROOT
> $SRC_ROOT/configure --prefix=$INSTALL_ROOT \
>        --enable-ltdl-install \
>        --enable-jit \
>        --enable-assertions \
>        --enable-optimized \
>        --enable-targets=x86,x86_64
>        --enable-profiling \
>
> make REQUIRES_RTTI=1
> sudo make install
>
>
>
> According to previous posts to the list, REQUIRE_RTTI=1 should do, but I still get a lot of RTTI-related errors like this while linking "opt":
>
> (.data.rel.ro._ZTIN4llvm10X86JITInfoE[typeinfo for llvm::X86JITInfo]+0x10): undefined reference to `typeinfo for llvm::TargetJITInfo'
>
> Any ideas?
>
> Thanks ahead,
> Pablo
>
>
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