[LLVMdev] llvm-g++ does not work!

Gordon Keiser gkeiser at arxan.com
Tue Oct 2 11:15:11 PDT 2012

The issue here (even if you get dragonegg working) is that the thing that most newer linuxes install when you apt-get llvm-gcc isn't actually llvm-gcc, it's gcc with the dragonegg plugin.   Even if the plugin issues are sorted out, the "fake" llvm-gcc doesn't support -emit-llvm so this wouldn't work.  

You'll probably need to pull a 2.8 of it from llvm.org or a different repository.


> -----Original Message-----
> From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu]
> On Behalf Of Reza Sheykhi
> Sent: Tuesday, October 02, 2012 1:37 PM
> To: llvmdev at cs.uiuc.edu
> Subject: [LLVMdev] llvm-g++ does not work!
> Hi,
> I am using PinaVM which is a prototype of a SystemC front-end based on
> "LLVM". The only version that it works with is 2.8. Also to test PinaVM, we
> need llvm-g++ (I think clang does not work). However, when I want to run an
> example, i get the following error, which i think is related to llvm-g++:
> reza at RezaUbuntu:~/pinavm-pinavm/systemc-examples/jerome-chain$
> make promela
> llvm-g++ -fno-inline-functions -I../../external/systemc-2.2.0/src/
> -I../../external/TLM-2009-07-15/include/tlm -I../../external/basic -emit-llvm -
> c main.cpp -o main.bc Potential incompatible plugin version. GCC: 4.5.3.
> Expected: 4.5.4 Defines 'dragonegg_disable_version_check' as env variable
> to remove this warning Please note that unexpected errors might occur.
> llvm-link main.bc -o main.linked.bc
> llvm-link: main.bc:1:1: error: expected top-level entity
> ELF??4(VS???????????????????????
> ^
> llvm-link: error loading file 'main.bc'
> make: *** [main.linked.bc] Error 1
> It shows the main.bc is not a bitcode file. Most likely the llvm-g++ is broken.
> Would you please let me know your opinion about it, and tell me how i can
> fix it?
> Thank you,
> Reza
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