refactoring fixes

driver/stub/Makefile

@@ -0,0 +1,20 @@
+CXXFLAGS += -std=c++11 -O3 -Wall -Wextra -pedantic -Wfatal-errors
+#CXXFLAGS += -std=c++11 -g -O0 -Wall -Wextra -pedantic -Wfatal-errors
+
+CXXFLAGS += -I../include -I../../runtime
+
+CXXFLAGS += -fPIC
+
+LDFLAGS += -shared -pthread
+
+SRCS = vortex.cpp ../common/vx_utils.cpp
+
+PROJECT = libvortex.so
+
+all: $(PROJECT)
+
+$(PROJECT): $(SRCS) 
+	$(CXX) $(CXXFLAGS) $^ $(LDFLAGS) -o $@
+
+clean:
+	rm -rf $(PROJECT) obj_dir

driver/stub/vortex.cpp

@@ -0,0 +1,45 @@
+#include <vortex.h>
+
+extern int vx_dev_open(vx_device_h* /*hdevice*/) {
+    return -1;
+}
+
+extern int vx_dev_close(vx_device_h /*hdevice*/) {
+    return -1;
+}
+
+extern int vx_alloc_dev_mem(vx_device_h /*hdevice*/, size_t /*size*/, size_t* /*dev_maddr*/) {
+    return -1;
+}
+
+extern int vx_flush_caches(vx_device_h /*hdevice*/, size_t /*dev_maddr*/, size_t /*size*/) {
+    return -1;
+}
+
+extern int vx_alloc_shared_mem(vx_device_h /*hdevice*/, size_t /*size*/, vx_buffer_h* /*hbuffer*/) {
+    return -1;
+}
+
+extern volatile void* vx_host_ptr(vx_buffer_h /*hbuffer*/) {
+    return nullptr;
+}
+
+extern int vx_buf_release(vx_buffer_h /*hbuffer*/) {
+    return -1;
+}
+
+extern int vx_copy_to_dev(vx_buffer_h /*hbuffer*/, size_t /*dev_maddr*/, size_t /*size*/, size_t /*src_offset*/) {
+    return -1;
+}
+
+extern int vx_copy_from_dev(vx_buffer_h /*hbuffer*/, size_t /*dev_maddr*/, size_t /*size*/, size_t /*dest_offset*/) {
+     return -1;
+}
+
+extern int vx_start(vx_device_h /*hdevice*/) {
+    return -1;
+}
+
+extern int vx_ready_wait(vx_device_h /*hdevice*/, long long /*timeout*/) {
+    return -1;
+}