Revert "[TCling] Invoke InterOp interpreter API in metacling"

This reverts commit bfa3a6e.

Author: aaronj0

Diff for: core/metacling/src/CMakeLists.txt

@@ -44,7 +44,6 @@ target_include_directories(MetaCling SYSTEM PRIVATE
   ${CLANG_INCLUDE_DIRS}
   ${LLVM_INCLUDE_DIRS}
   ${CLAD_INCLUDE_DIRS}
-  ${CPPINTEROP_INCLUDE_DIRS}
 )
 
 target_include_directories(MetaCling PRIVATE
@@ -75,7 +74,7 @@ if(MSVC)
    set_source_files_properties(TCling.cxx COMPILE_FLAGS /bigobj)
 endif()
 
-add_dependencies(MetaCling CLING clangCppInterOp)
+add_dependencies(MetaCling CLING)
 
 ##### libCling #############################################################
 
@@ -114,14 +113,15 @@ ROOT_LINKER_LIBRARY(Cling
         $<TARGET_OBJECTS:ClingUtils>
         $<TARGET_OBJECTS:Dictgen>
         $<TARGET_OBJECTS:MetaCling>
-        $<TARGET_OBJECTS:clangCppInterOp>
         LIBRARIES ${CLING_LIBRARIES} ${LINK_LIBS} ${CLING_PLUGIN_LINK_LIBS})
 
 # When these two link at the same time, they can exhaust the RAM on many machines, since they both link against llvm.
 add_dependencies(Cling rootcling_stage1)
-if(testing)
-  add_dependencies(Cling CppInterOpUnitTests)
-endif()
+
+# if(testing)
+#   add_dependencies(Cling CppInterOpUnitTests)
+# endif()
+
 
 if(MSVC)
   set_target_properties(Cling PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS TRUE)

Diff for: core/metacling/src/TCling.cxx

@@ -115,8 +115,6 @@ clang/LLVM technology.
 #include "cling/Utils/SourceNormalization.h"
 #include "cling/Interpreter/Exception.h"
 
-#include "clang/Interpreter/CppInterOp.h"
-
 #include "llvm/IR/GlobalValue.h"
 #include "llvm/IR/Module.h"
 
@@ -1541,11 +1539,6 @@ TCling::TCling(const char *name, const char *title, const char* const argv[], vo
    if (!fInterpreter->getCI()) { // Compiler instance could not be created. See https://its.cern.ch/jira/browse/ROOT-10239
       return;
    }
-
-   // Tell CppInterOp that the cling::Interpreter instance is managed externally by ROOT
-   // Sets the interpreter by passing the fInterpreter handle as soon as TCling is initialized 
-   Cpp::UseExternalInterpreter((Cpp::TInterp_t*)fInterpreter.get());
-   
    // Don't check whether modules' files exist.
    fInterpreter->getCI()->getPreprocessorOpts().DisablePCHOrModuleValidation =
       DisableValidationForModuleKind::All;