Svadev mailing list

[John Criswell <criswell AT illinois.edu>]

On 9/17/12 5:23 PM, Martin Richtarsky wrote:
> John Criswell schrieb:
> > On 9/17/12 4:09 PM, Martin Richtarsky wrote:
> > > John Criswell schrieb:
> > > > Dear All,
> > > >
> > > > I'm writing to let everyone know that SAFECode mainline (which works
> > > > with LLVM mainline) is now ready for development.  All SAFECode
> > > > developers should submit new patches and commits to mainline SAFECode;
> > > > we're freezing the release_30 branch of SAFECode.
> > > I'm getting a linker error when building current LLVM trunk together
> > > with
> > > SAFECode trunk. Anyone has seen this before?
> > >
> > > llvm[4]: Linking Release+Asserts Shared Library libclang.so
> > > /usr/lib64/gcc/x86_64-suse-linux/4.3/../../../../x86_64-suse-linux/bin/ld:
> > > anonymous version tag cannot be combined with other version tags
> > > collect2: ld returned 1 exit status
> > > make[4]: ***
> > > [/local/mar_/buildsafecode/projects/safecode/Release+Asserts/lib/libclang.so]
> > > Error 1
> > I haven't seen this error.  I usually use Debug builds; I'm running a
> > Release+Asserts build right now to see if that causes the issue to show
> > up.
> >
> > In the meantime, can you tell me what version of GCC (or Clang) and ld
> > you're using?  We should make sure they're not one of the versions that
> > can't build LLVM.
>
> I was using:
>
> gcc (SUSE Linux) 4.3.4 [gcc-4_3-branch revision 152973]

I suggest updating to a working version of GCC (or using Clang) to 
compile LLVM, but I don't think the broken version of GCC is the problem.

> and these two ld's
>
> GNU ld (GNU Binutils; SUSE Linux Enterprise 11) 2.20.0.20100122-0.7.9
> GNU ld (GNU Binutils) 2.22.52

Wow.  I think you're using a newer version of the linker than I am.

Just as an experiment, try commenting out the following lines in 
llvm/Makefile.rules:

ifeq ($(HOST_OS), $(filter $(HOST_OS), Linux NetBSD FreeBSD GNU))
ifneq ($(ARCH), Mips)
  LD.Flags += -Wl,--version-script=$(LLVM_SRC_ROOT)/autoconf/ExportMap.map
endif
endif


-- John T.

> This gcc version did show a problem building LLVM before, but I have added
> a workaround for that (change -O3 to -O2 in the configure script). This
> was a known problem on clang-dev.
>
> I will also try a debug build tomorrow.
>
> Best regards,
> Martin
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