[cfe-dev] Weird build problem while building libcxx_tsan

[İsmail Dönmez]

Hi,

Currently on openSUSE 13.2 building llvm+clang trunk fails with:

  Run Build Command:"/usr/bin/ninja" "cmTryCompileExec3878271410"

  [1/2] Building CXX object
  CMakeFiles/cmTryCompileExec3878271410.dir/testCXXCompiler.cxx.o

  FAILED: /home/abuild/rpmbuild/BUILD/llvm/stage2/./bin/clang
  -fsanitize=thread -o
  CMakeFiles/cmTryCompileExec3878271410.dir/testCXXCompiler.cxx.o -c
  testCXXCompiler.cxx

  /home/abuild/rpmbuild/BUILD/llvm/stage2/./bin/clang: symbol lookup error:
  /home/abuild/rpmbuild/BUILD/llvm/stage2/./bin/clang: undefined symbol:
  _ZN4llvm3sys7Process28FixupStandardFileDescriptorsEv

  ninja: build stopped: subcommand failed.

This is weird because surely the stage2 clang has this symbol, and manually
running stage2/bin/clang foo.cxx works fine. Any ideas what might be going
on here?
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