Disable LTC for out-of-tree.

build_tools/python_deploy/build_linux_packages.sh

@@ -364,14 +364,16 @@ function setup_venv() {
 function build_out_of_tree() {
   local torch_from_bin="$1"
   local python_version="$2"
-  echo ":::: Build out-of-tree Torch from binary: $torch_from_bin with Python: $python_version"
-
   local torch_version="$3"
-  local enable_ltc="ON"
-  if [[ "${torch_version}" == "stable" ]]
-  then
-    enable_ltc="OFF"
-  fi
+  echo ":::: Build out-of-tree Torch from binary: $torch_from_bin with Python: $python_version ($torch_version)"
+
+  # Disabled due to link errors on undefined c10 and other core torch symbols.
+  enable_ltc="OFF"
+  # local enable_ltc="ON"
+  # if [[ "${torch_version}" == "stable" ]]
+  # then
+  #   enable_ltc="OFF"
+  # fi
 
   if [ ! -d "/main_checkout/torch-mlir/llvm-build/lib/cmake/mlir/" ]
   then

projects/ltc/csrc/base_lazy_backend/CMakeLists.txt

@@ -71,9 +71,6 @@ target_link_libraries(torch_mlir_ltc_backend
   TorchMLIRAggregateCAPI
   TorchMLIRJITIRImporter
   ${TORCH_LIBRARIES}
-  # In some configurations, symbols are not found for inlines, so over-link.
-  torch_cpu
-  c10
 )
 
 message(STATUS "TORCH_CXXFLAGS=${TORCH_CXXFLAGS} -Wno-pedantic")