From e4338d24bacc7fba0628d663119c0473daa15c9e Mon Sep 17 00:00:00 2001
From: Sameer Sheorey <sameer.sheorey@intel.com>
Date: Wed, 14 Aug 2024 14:09:27 -0700
Subject: [PATCH] try fix arm64 TLS error

Add TCM_ENABLE=1 to python
---
 CMakeLists.txt            | 2 +-
 python/open3d/__init__.py | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 00f300f3e6f..dc2bdc62e15 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -505,7 +505,7 @@ endmacro()
 if (LINUX_AARCH64)
 # Fix for ImportError: ... /pybind.cpython-310-aarch64-linux-gnu.so: cannot allocate memory in static TLS block
 # https://bugs.launchpad.net/ubuntu/+source/mysql-8.0/+bug/1889851
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ftls-model=global-dynamic")
+    add_compile_options("-ftls-model=global-dynamic")
 endif()
 
 # Include convenience functions
diff --git a/python/open3d/__init__.py b/python/open3d/__init__.py
index b5102eea50d..e8bf7ad2245 100644
--- a/python/open3d/__init__.py
+++ b/python/open3d/__init__.py
@@ -16,6 +16,9 @@
 import os
 import sys
 os.environ["KMP_DUPLICATE_LIB_OK"] = "True"
+# Enable thread composability manager to coordinate Intel OpenMP and TBB threads. Only works with Intel OpenMP.
+# TBB must not be already loaded.
+os.environ["TCM_ENABLE"] = "1"
 from ctypes import CDLL
 from ctypes.util import find_library
 from pathlib import Path