[all-commits] [llvm/llvm-project] bbfebd: [CMake] Add $ORIGIN/../../../../lib to rpath if BU...

[Fangrui Song via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: bbfebd7b8a671c9649305b8a5f72e93dd1ef60e1
      https://github.com/llvm/llvm-project/commit/bbfebd7b8a671c9649305b8a5f72e93dd1ef60e1
  Author: Fangrui Song <maskray at google.com>
  Date:   2020-01-06 (Mon, 06 Jan 2020)

  Changed paths:
    M lldb/source/API/CMakeLists.txt

  Log Message:
  -----------
  [CMake] Add $ORIGIN/../../../../lib to rpath if BUILD_SHARED_LIBS or LLVM_LINK_LLVM_DYLIB on *nix

Summary:
lib/python2.7/dist-packages/lldb/_lldb.so is a symlink to lib/liblldb.so,
which depends on lib/libLLVM*.so (-DBUILD_SHARED_LIBS=ON) or lib/libLLVM-10git.so
(-DLLVM_LINK_LLVM_DYLIB=ON). Add an additional rpath `$ORIGIN/../../../../lib` so
that _lldb.so can be loaded from Python.

This fixes an import error from lib/python2.7/dist-packages/lldb/__init__.py

  from . import _lldb
  ImportError: libLLVMAArch64CodeGen.so.10git: cannot open shared object file: No such file or directory

 The following configurations will work:

* -DBUILD_SHARED_LIBS=ON
* -DBUILD_SHARED_LIBS=OFF -DLLVM_LINK_LLVM_DYLIB=ON
* -DBUILD_SHARED_LIBS=OFF -DLLVM_LINK_LLVM_DYLIB=ON -DCLANG_LINK_CLANG_DYLIB=ON
  (-DCLANG_LINK_CLANG_DYLIB=ON depends on -DLLVM_LINK_LLVM_DYLIB=ON)

Reviewed By: labath

Differential Revision: https://reviews.llvm.org/D71800