lldb: Link with libatomic on x86

cmake atomic check is not sufficient for i686 target where clang14 still
generates __atomic_store calls but the check does not entail this
function and happily thinks that compiler can resolve all atomic via intrinsics
on i686, but thats not the case, ideally the check for determining
atomic operation should be make more robust but until then lets ask to
link with libatomic on i686/linux

Upstream-Status: Inappropriate [OE-Specific]
Signed-off-by: Khem Raj <[email protected]>

Author: kraj

lldb/source/Utility/CMakeLists.txt

@@ -19,6 +19,10 @@ if (CMAKE_SYSTEM_NAME MATCHES "Windows")
   list(APPEND LLDB_SYSTEM_LIBS ws2_32 rpcrt4)
 endif ()
 
+if (CMAKE_SYSTEM_PROCESSOR MATCHES "i686" AND CMAKE_SYSTEM_NAME MATCHES "Linux")
+    list(APPEND LLDB_SYSTEM_LIBS atomic)
+endif()
+
 if (NOT HAVE_CXX_ATOMICS64_WITHOUT_LIB )
     list(APPEND LLDB_SYSTEM_LIBS atomic)
 endif()