tensorflow: make sure tf use the right arch flags

python-3.7.6-0.build.sh

@@ -386,19 +386,21 @@ EOFHIC
 	export TF_CUDA_VERSION=$(${CUDADIR}/bin/nvcc --version | sed -n 's/^.*release \(.*\),.*/\1/p')
 	export TF_CUDNN_VERSION=$(sed -n 's/^#define CUDNN_MAJOR\s*\(.*\).*/\1/p' ${CUDADIR}/include/cudnn.h)
 	export TF_CUDA_COMPUTE_CAPABILITIES=3.5,3.7,5.0,5.2,5.3,6.0,6.1,6.2,7.0,7.2,7.5
-	export CC_OPT_FLAGS="-march=native"
+	export CC_OPT_FLAGS="-march=nehalem"
 	export TF_NEED_CUDA=1
 
 	./configure
 	bazel build \
+		--cxxopt="-march=nehalem" \
+    --copt="-march=nehalem" \
 		//tensorflow:libtensorflow.so \
 		//tensorflow:libtensorflow_cc.so \
 		//tensorflow:install_headers \
 		//tensorflow/tools/pip_package:build_pip_package
 
 		mkdir tf-src
-		./bazel-bin/tensorflow/tools/pip_package/build_pip_package -src ./tf-src
-		cd tf-src
+		./bazel-bin/tensorflow/tools/pip_package/build_pip_package -src ${BUILDDIR}/tensorflow-pip
+		cd ${BUILDDIR}/tensorflow-pip
 		python3 setup.py build
 		python3 setup.py install -- prefix $PREFIX