[llvm-bugs] [Bug 33669] New: Building with LINK_LLVM_DYLIB and LTO cause tblgen link failure

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=33669

            Bug ID: 33669
           Summary: Building with LINK_LLVM_DYLIB and LTO cause tblgen
                    link failure
           Product: tools
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: TableGen
          Assignee: unassignedbugs at nondot.org
          Reporter: me at marandil.pl
                CC: llvm-bugs at lists.llvm.org

Created attachment 18742
  --> https://bugs.llvm.org/attachment.cgi?id=18742&action=edit
Repro script and log

I tried building LLVM trunk with the following CMake config:

```
cmake $SOURCE -G Ninja \
      -DCMAKE_BUILD_TYPE=Release \
      -DCMAKE_INSTALL_PREFIX=$TARGET \
      -DLLVM_LINK_LLVM_DYLIB=On \
      -DLLVM_ENABLE_LTO=On \
      -DLLVM_ENABLE_ASSERTIONS=On \
      -DLLVM_TARGETS_TO_BUILD=X86
```

However, the process crashed at linking tblgen with numerous errors, including
the following four:

/usr/bin/ld: error: lib/libLLVMSupport.a: no archive symbol table (run ranlib)
/usr/bin/ld: error: lib/libLLVMTableGen.a: no archive symbol table (run ranlib)
/usr/bin/ld: error: lib/libLLVMSupport.a: no archive symbol table (run ranlib)
/usr/bin/ld: error: lib/libLLVMDemangle.a: no archive symbol table (run ranlib)


... followed by an uncountable number of undefined references.

I'm using llvm-3.8's clang/clang++ and GNU gold 1.14 from binutils 2.28 in this
build.

I'm attaching my repro script and full log
(gathered as `bash repro.sh 2>&1 | tee repro.log`)

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