You can compile the host application by following the typical cross-compilation flow for the Cortex A72 processor. To build the application, run the following command
make application
or
cd $(BUILD_TARGET_DIR); \
aarch64-xilinx-linux-g++ -mcpu=cortex-a72.cortex-a53 -march=armv8-a+crc -fstack-protector-strong \
-D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security --sysroot=$(SDKTARGETSYSROOT) -O -c \
-std=c++14 -D__linux__ \
-DM_LARGE=$(GEMM_SIZE) -DN_LARGE=$(GEMM_SIZE) -DL_LARGE=$(GEMM_SIZE) \
-I$(SDKTARGETSYSROOT)/usr/include/xrt -I$(SDKTARGETSYSROOT)/usr/include -I$(SDKTARGETSYSROOT)/usr/lib -I$(HOST_APP_SRC)/$(MAT_DIMS) \
$(HOST_APP_SRC)/main.cpp -o $(BUILD_TARGET_DIR)/gemm_top_app.o \
-L$(SDKTARGETSYSROOT)/lib -lxrt_coreutil
aarch64-xilinx-linux-g++ -mcpu=cortex-a72.cortex-a53 -march=armv8-a+crc -fstack-protector-strong \
-D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security --sysroot=$(SDKTARGETSYSROOT) \
$(BUILD_TARGET_DIR)/gemm_top_app.o -L$(SDKTARGETSYSROOT)/usr/lib -lxrt_coreutil \
-o $(BUILD_TARGET_DIR)/gemm_dsp_xrt.elf
See this page for XRT documentation. See this page for details of host application programming.
| Switch | Description |
|---|---|
| -O | Optimize. | Optimizing compilation takes somewhat more time, and a lot more memory for a large function. With -O, the compiler tries to reduce code size and execution time, without performing any optimizations that can take a great deal of compilation time. |
| -D__linux__ | |
| -DXAIE_DEBUG | Enable debug interface capabilities where certain core status, event status, or stack trace can be dumped out. |
| -D\<Pre-processor Macro String>=\<value> | Pass Pre-processor Macro definitions to the cross-compiler. |
| -I \<dir> | Add the directory dir to the list of directories to be searched for header files. |
| -o \<file> | Place output in file <file>. This applies regardless of the output being produced, whether it be an executable file, an object file, an assembler file or preprocessed C code. |
| --sysroot=\<dir> | Use dir as the logical root directory for headers and libraries. For example, if the compiler would normally search for headers in /usr/include and libraries in /usr/lib, it will instead search dir/usr/include and dir/usr/lib. This is automatically set by the env_setup.sh script |
| -l\<library> | Search the library named library when linking. The 2D-FFT tutorial requires adf_api_xrt and xrt_coreutil libraries. |
| -L \<dir> | Add directory <dir> to the list of directories to be searched for -l. |
The following is a description of the input sources compiled by the cross-compiler compiler command.
| Inputs Sources | Description |
|---|---|
| $(HOST_APP_SRC)/main.cpp | Source application file for the gemm_dsp_xrt.elf that will run on an A72 processor. |
| $(HOST_APP_SRC)/matrix_A_data.h, matrix_B_data.h | Matrix A and B Data to be used for matrix multiplication. |
| $(HOST_APP_SRC)/output_data.h | Golden data to which DUT output will be compared. |
The following is a description of the output objects that results from executing the cross-compiler command with the above inputs and options.
| Output Objects | Description |
|---|---|
| $(BUILD_TARGET_DIR)/gemm_dsp_xrt.elf | The executable that will run on an A72 processor. |