From 0ebcb3b96c567bf8d928a10afc7c0fdf22b08c70 Mon Sep 17 00:00:00 2001
From: Chris Olivier <cjolivier01@gmail.com>
Date: Wed, 22 Nov 2017 14:38:55 -0800
Subject: [PATCH] Add Intel openmp as a submodule and build for x86
 architectures (#8730)

* Refreshed branch intel_openmp

* Disable Intel OpenMP local build for Windows until a Windows user can fix

* Ignore 3rdparty license headers
---
 .gitmodules             |  3 +++
 3rdparty/openmp         |  1 +
 CMakeLists.txt          | 15 ++++++++++-----
 LICENSE                 |  1 +
 tools/license_header.py |  1 +
 5 files changed, 16 insertions(+), 5 deletions(-)
 create mode 160000 3rdparty/openmp

diff --git a/.gitmodules b/.gitmodules
index 7a76cbaf78d9..f9b2ab68f463 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -16,3 +16,6 @@
 [submodule "cub"]
 	path = cub
 	url = https://github.com/dmlc/cub
+[submodule "3rdparty/openmp"]
+	path = 3rdparty/openmp
+	url = https://github.com/llvm-mirror/openmp
diff --git a/3rdparty/openmp b/3rdparty/openmp
new file mode 160000
index 000000000000..37c72127e903
--- /dev/null
+++ b/3rdparty/openmp
@@ -0,0 +1 @@
+Subproject commit 37c72127e90360a020f351f18d9cccfc30e5145a
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b6bb81418231..dd1791715431 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -54,10 +54,13 @@ if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/build/private/local_config.cmake)
   include(${CMAKE_CURRENT_SOURCE_DIR}/build/private/local_config.cmake)
 endif()
 
-set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake/Modules;${CMAKE_MODULE_PATH}")
-
-
+if(MSVC)
+  set(SYSTEM_ARCHITECTURE x86_64)
+else()
+  EXECUTE_PROCESS( COMMAND uname -m COMMAND tr -d '\n' OUTPUT_VARIABLE SYSTEM_ARCHITECTURE)
+endif()
 
+set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake/Modules;${CMAKE_MODULE_PATH}")
 
 SET(EXTRA_OPERATORS "" CACHE PATH "EXTRA OPERATORS PATH")
 
@@ -263,11 +266,13 @@ endif()
 # ---[ OpenMP
 if(USE_OPENMP)
   find_package(OpenMP REQUIRED)
-  if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/openmp/CMakeLists.txt)
+  # This should build on Windows, but there's some problem and I don;t have a Windows box, so
+  # could a Windows user please fix?
+  if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/openmp/CMakeLists.txt AND SYSTEM_ARCHITECTURE STREQUAL "x86_64" AND NOT MSVC)
     # Intel/llvm OpenMP: https://github.com/llvm-mirror/openmp
     set(OPENMP_STANDALONE_BUILD TRUE)
     set(LIBOMP_ENABLE_SHARED FALSE)
-    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/openmp)
+    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/openmp)
     list(REMOVE_ITEM mxnet_LINKER_LIBS iomp5)
     list(APPEND mxnet_LINKER_LIBS omp)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
diff --git a/LICENSE b/LICENSE
index 01dfcf46792d..4173ec804593 100644
--- a/LICENSE
+++ b/LICENSE
@@ -234,6 +234,7 @@
     1. Fast R-CNN  - For details, see example/rcnn/LICENSE
     2. Faster R-CNN - For details, see example/rcnn/LICENSE
     3. tree_lstm - For details, see example/gluon/tree_lstm/LICENSE
+    4. OpenMP - For details, see 3rdparty/openmp/LICENSE.txt
 
 
     ========================================================================
diff --git a/tools/license_header.py b/tools/license_header.py
index e26fd2becabc..29538d13daf7 100644
--- a/tools/license_header.py
+++ b/tools/license_header.py
@@ -61,6 +61,7 @@
                'dmlc-core/',
                'mshadow/',
                'nnvm',
+               '3rdparty',   
                'ps-lite',
                'src/operator/mkl/',
                'src/operator/contrib/ctc_include/']