IVGCVSW-5365 'Create the TfLite Delegate subdirectory in ArmNN'

* Created delegate sub-directory under armnn
* Created Delegate, ArmnnSubgraph and DelegateOptions classes
* Created cmake files.
* Integrated doctest (under MIT license) as testing framework

Signed-off-by: Sadik Armagan <sadik.armagan@arm.com>
Change-Id: If725ebd62c40a97c783cdad22bca48709d44338c

4 files changed, 116 insertions, 0 deletions

diff --git a/delegate/cmake/Modules/ArmnnDelegateConfig.cmake.in b/delegate/cmake/Modules/ArmnnDelegateConfig.cmake.in
new file mode 100644
index 0000000000..12d1161afa
--- /dev/null
+++ b/delegate/cmake/Modules/ArmnnDelegateConfig.cmake.in
@@ -0,0 +1,19 @@
+#
+# Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
+# SPDX-License-Identifier: MIT
+#
+
+get_filename_component(ARMNN_DELEGATE_CMAKE_DIR "${CMAKE_CURRENT_LIST_FILE}" DIRECTORY)
+set(ARMNN_DELEGATE_CONFIG_FILE ${CMAKE_CURRENT_LIST_FILE})
+MESSAGE(STATUS "Found ArmnnDelegate: ${ARMNN_DELEGATE_CONFIG_FILE}")
+
+include(CMakeFindDependencyMacro)
+
+list(APPEND CMAKE_MODULE_PATH ${ARMNN_DELEGATE_CMAKE_DIR})
+
+if(NOT TARGET ArmnnDelegate::ArmnnDelegate)
+    MESSAGE(STATUS "ArmnnDelegate Import: ${ARMNN_DELEGATE_CMAKE_DIR}/ArmnnDelegateTargets.cmake")
+    include("${ARMNN_DELEGATE_CMAKE_DIR}/ArmnnDelegateTargets.cmake")
+endif()
+
+set(ARMNN_DELEGATE_LIBRARIES ArmnnDelegate::ArmnnDelegate)
\ No newline at end of file
diff --git a/delegate/cmake/Modules/FindFlatbuffers.cmake b/delegate/cmake/Modules/FindFlatbuffers.cmake
new file mode 100644
index 0000000000..13d6f917b3
--- /dev/null
+++ b/delegate/cmake/Modules/FindFlatbuffers.cmake
@@ -0,0 +1,32 @@
+#
+# Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
+# SPDX-License-Identifier: MIT
+#
+
+include(FindPackageHandleStandardArgs)
+unset(FLATBUFFERS_FOUND)
+
+find_path(Flatbuffers_INCLUDE_DIR
+        flatbuffers/flatbuffers.h
+        HINTS
+            ${FLATBUFFERS_ROOT}/include
+            /usr/local/include
+            /usr/include)
+
+find_library(Flatbuffers_LIB
+        NAMES
+            libflatbuffers.a
+            flatbuffers
+        HINTS
+            ${FLATBUFFERS_ROOT}/lib
+            /usr/local/lib
+            /usr/lib)
+
+## Set FLATBUFFERS_FOUND
+find_package_handle_standard_args(Flatbuffers DEFAULT_MSG Flatbuffers_INCLUDE_DIR Flatbuffers_LIB)
+
+## Set external variables for usage in CMakeLists.txt
+if(FLATBUFFERS_FOUND)
+    set(Flatbuffers_LIB ${Flatbuffers_LIB})
+    set(Flatbuffers_INCLUDE_DIR ${Flatbuffers_INCLUDE_DIR})
+endif()
\ No newline at end of file
diff --git a/delegate/cmake/Modules/FindTensorflow.cmake b/delegate/cmake/Modules/FindTensorflow.cmake
new file mode 100644
index 0000000000..8b47d30362
--- /dev/null
+++ b/delegate/cmake/Modules/FindTensorflow.cmake
@@ -0,0 +1,30 @@
+#
+# Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
+# SPDX-License-Identifier: MIT
+#
+
+include(FindPackageHandleStandardArgs)
+unset(TENSORFLOW_FOUND)
+
+find_path(Tensorflow_INCLUDE_DIR
+        NAMES
+            tensorflow/core
+            tensorflow/cc
+            third_party
+        HINTS
+            ${TENSORFLOW_ROOT})
+
+find_library(Tensorflow_LIB
+        NAMES
+            tensorflow_all
+        HINTS
+            ${TENSORFLOW_ROOT})
+
+## Set TENSORFLOW_FOUND
+find_package_handle_standard_args(Tensorflow DEFAULT_MSG Tensorflow_INCLUDE_DIR Tensorflow_LIB)
+
+## Set external variables for usage in CMakeLists.txt
+if(TENSORFLOW_FOUND)
+    set(Tensorflow_LIB ${Tensorflow_LIB})
+    set(Tensorflow_INCLUDE_DIRS ${Tensorflow_INCLUDE_DIR})
+endif()
\ No newline at end of file
diff --git a/delegate/cmake/Modules/FindTfLite.cmake b/delegate/cmake/Modules/FindTfLite.cmake
new file mode 100644
index 0000000000..d6c274cb65
--- /dev/null
+++ b/delegate/cmake/Modules/FindTfLite.cmake
@@ -0,0 +1,35 @@
+#
+# Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
+# SPDX-License-Identifier: MIT
+#
+
+include(FindPackageHandleStandardArgs)
+unset(TFLITE_FOUND)
+
+find_path(TfLite_INCLUDE_DIR
+        NAMES
+            tensorflow/lite
+            third_party
+        HINTS
+            ${TFLITE_LIB_ROOT})
+
+find_library(TfLite_LIB
+        NAMES
+            "libtensorflow_lite_all.so"
+        HINTS
+            ${TFLITE_LIB_ROOT})
+
+find_path(TfLite_Schema_INCLUDE_PATH
+            schema_generated.h
+        HINTS
+            ${TFLITE_LIB_ROOT}/tensorflow/lite/schema)
+
+## Set TFLITE_FOUND
+find_package_handle_standard_args(TfLite DEFAULT_MSG TfLite_INCLUDE_DIR TfLite_LIB TfLite_Schema_INCLUDE_PATH)
+
+## Set external variables for usage in CMakeLists.txt
+if(TFLITE_FOUND)
+    set(TfLite_LIB ${TfLite_LIB})
+    set(TfLite_INCLUDE_DIR ${TfLite_INCLUDE_DIR})
+    set(TfLite_Schema_INCLUDE_PATH ${TfLite_Schema_INCLUDE_PATH})
+endif()
\ No newline at end of file