[llvm-dev] LLD and LLVM_LINK_LLVM_DYLIB

Hahnfeld, Jonas via llvm-dev
Fri, 06 Jan 2017 05:51:01 -0000

It builds fine but I cannot execute the resulting binary which aborts with the
mentioned error.However I don't use LLVM_ENABLE_PROJECTS, I don't know
if that changes the way libLLVM-4.0svn.so is linked...
Cheers,Jonas
Am Freitag, den 06.01.2017, 13:44 +0900 schrieb Rui
Ueyama:
> Hi Hahnfeld,
> I just compiled with LLVM_LINK_LLVM_DYLIB enabled [1] and build lld with
`ninja lld`. It built fine. What am I missing?
>
> [1] $ cmake -GNinja -DCMAKE_BUILD_TYPE=Debug -DLLVM_ENABLE_THREADS=On
-DLLVM_ENABLE_LLD=true -DLLVM_LINK_LLVM_DYLIB=true
-DLLVM_ENABLE_PROJECTS='clang;lld' ../llvm-project/llvm
>
> On Wed, Jan 4, 2017 at 10:31 PM, Hahnfeld, Jonas via llvm-dev <llvm-dev
at lists.llvm.org> wrote:
> > Hi all,
> >
> >
> >
> > I recently gave LLD a try and it definitely works fine. However one
cannot
> >
> > build it together with LLVM_LINK_LLVM_DYLIB:
> >
> > ELF/Driver.cpp and ELF/DriverUtils.cpp pull in
llvm/Support/CommandLine.h
> >
> > which defines the command line options so these global variables end
up in
> >
> > libLLVM-4.0svn.so via liblldELF.
> >
> > If this shared library is then linked into bin/lld or bin/opt one gets
> >
> > errors because of "Option '...' registered more than
once" as they are also
> >
> > present in the binaries themselves.
> >
> >
> >
> > Is it possible to keep the global variables for command line options
out of
> >
> > libLLVM-4.0svn.so?
> >
> >
> >
> > Regards,
> >
> > Jonas
> >
> >
> >
> > --
> >
> > Jonas Hahnfeld, MATSE-Auszubildender
> >
> >
> >
> > IT Center
> >
> > Group: High Performance Computing
> >
> > Division: Computational Science and Engineering
> >
> > RWTH Aachen University
> >
> > Seffenter Weg 23
> >
> > D 52074  Aachen (Germany)
> >
> > Hahnfeld at itc.rwth-aachen.de
> >
> > www.itc.rwth-aachen.de
> >
> >
> >
> >
> >
> >
> > _______________________________________________
> >
> > LLVM Developers mailing list
> >
> > llvm-dev at lists.llvm.org
> >
> > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
> >
> >
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