Update tensorflow to v1.12 (#3486)

* Update external package

- Update external package version
- Update cmake to build tflite
- Add gitignore for new external code

* Update library to support tflite

- Update nnapi delegate
- Update NeuralNetworksShim.h for new API
- Fix cmake for new files in updated tensorflow
- Workaround: Introduce OBS_BUILD flag to avoid gbs build fail

* Update neurun CPU kernel

- Update neurun CPU kernel to call updated tflite interpreter kernel
- Add build option -fPIC for updated tflite kernel

Signed-off-by: Hyeongseok Oh <hseok82.oh@samsung.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6238ce073..85a81dd94 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -38,6 +38,7 @@ link_directories(${CMAKE_INSTALL_PREFIX}/lib)
 
 # Download configuration
 option(DOWNLOAD_TENSORFLOW "Download Tensorflow source" ON)
+option(DOWNLOAD_ABSL "Download Absl source" ON)
 option(DOWNLOAD_EIGEN "Download Eigen source" ON)
 option(DOWNLOAD_FARMHASH "Download farmhash source" ON)
 option(DOWNLOAD_GEMMLOWP "Download GEMM low precesion library source" ON)
@@ -49,6 +50,11 @@ option(DOWNLOAD_ARMCOMPUTE "Download ARM Compute source" ON)
 option(BUILD_GTEST "Download and build Google Test" ON)
 nnfw_find_package(GTest QUIET)
 
+# NOTE Workaround to avoid build fail by tensorflow (or acl) package version mismatch on obs build
+if(OBS_BUILD)
+  add_definitions(-DOBS_BUILD)
+endif(OBS_BUILD)
+
 # TODO For now Android build is being enabled incrementally so not all subdirectories are added yet.
 #      However we are going to have the same subdirectories with other OS eventually.
 if("${TARGET_OS}" STREQUAL "android")