[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
This commit is contained in:
Fangrui Song 2019-12-21 14:59:16 -08:00
parent f6544934b9
commit bbfebd7b8a
1 changed files with 8 additions and 0 deletions

View File

@ -111,6 +111,14 @@ add_lldb_library(liblldb SHARED ${option_framework}
${option_install_prefix}
)
# lib/pythonX.Y/dist-packages/lldb/_lldb.so is a symlink to lib/liblldb.so,
# which depends on lib/libLLVM*.so (BUILD_SHARED_LIBS) or lib/libLLVM-10git.so
# (LLVM_LINK_LLVM_DYLIB). Add an additional rpath $ORIGIN/../../../../lib so
# that _lldb.so can be loaded from Python.
if(LLDB_ENABLE_PYTHON AND (BUILD_SHARED_LIBS OR LLVM_LINK_LLVM_DYLIB) AND UNIX AND NOT APPLE)
set_property(TARGET liblldb APPEND PROPERTY INSTALL_RPATH "\$ORIGIN/../../../../lib${LLVM_LIBDIR_SUFFIX}")
endif()
if (MSVC)
set_source_files_properties(SBReproducer.cpp PROPERTIES COMPILE_FLAGS /bigobj)
endif()