Add support for building with Qualcomm QNN Engine Direct

Author: mmajchrzycki

Makefile

@@ -94,6 +94,21 @@ USE_FULL_TFLITE=1
 TARGET_LINUX_AARCH64=1
 endif
 
+ifeq (${USE_QUALCOMM_QNN},1)
+ifndef QNN_SDK_ROOT
+$(error QNN_SDK_ROOT is not set, install QNN Engine Direct and set it to the installation directory)
+endif
+USE_FULL_TFLITE=1
+CFLAGS += -I${QNN_SDK_ROOT}/include
+CFLAGS += -Iedge-impulse-sdk
+CFLAGS += -DEI_CLASSIFIER_USE_QNN_DELEGATES
+ifeq (${TARGET_LINUX_AARCH64},1)
+LDFLAGS += -L${QNN_SDK_ROOT}/lib/aarch64-ubuntu-gcc9.4 -lQnnTFLiteDelegate
+else ifeq (${TARGET_LINUX_X86},1)
+LDFLAGS += -L${QNN_SDK_ROOT}/lib/x86_64-linux-clang -lQnnTFLiteDelegate
+endif
+endif
+
 ifeq (${USE_ETHOS},1)
 CFLAGS += -DEI_ETHOS_LINUX
 CFLAGS += -Iedge-impulse-sdk/third_party/ethos_kernel_driver/include/