Linux Compile

This tutorial introduces how to compile programs for AIBOX-8550.

Local Compile

AIBOX-8550 runs Ubuntu 22.04 system, so you can use apt to install
tools on device for software development:

   sudo apt update
   sudo apt install build-essential

   # list installed compiler
   ls /usr/bin/aarch64-linux-gnu-*

Set the compiler into building rules, such as Makefile:

   # set compiler
   CC := aarch64-linux-gnu-gcc
   LD := aarch64-linux-gnu-ld

   CFLAGS := -Wall -O2

   TARGET := hello
   OBJS := main.o utils.o

   all: $(TARGET)

   $(TARGET): $(OBJS)
   	$(CC) $(LDFLAGS) -o $@ $^

   %.o: %.c
   	$(CC) $(CFLAGS) -c $< -o $@

   clean:
   	rm -f $(OBJS) $(TARGET)

Cross Compile

If need cross compile, please use the Ubuntu 22.04 (same version with
device) host PC and install cross compiler:

   sudo apt update
   sudo apt install crossbuild-essential-arm64

   # list installed compiler
   ls /usr/bin/aarch64-linux-gnu-*

And you need to copy these following contents from device to a single
folder in host PC as sysroot:

   # libraries
   /opt/qti/lib
   /opt/qti/usr/lib
   /lib
   /usr/local/lib
   /usr/aarch64-linux-gnu/lib
   /usr/lib

   # headers
   /opt/qti/usr/include
   /usr/include
   /usr/local/include

   # others
   /usr/share/pkgconfig
   /etc/alternatives

Then set the compiler and sysroot into building rules, such as
Makefile:

   # cross compiler prefix
   CROSS_COMPILE := aarch64-linux-gnu
   CC := $(CROSS_COMPILE)gcc
   LD := $(CROSS_COMPILE)ld

   # sysroot path
   SYSROOT ?= /path/to/sysroot

   # compile and link flags
   CFLAGS := -Wall -O2
   CFLAGS += --sysroot=$(SYSROOT)
   LDFLAGS := --sysroot=$(SYSROOT)

   TARGET := hello
   OBJS := main.o utils.o

   all: $(TARGET)

   $(TARGET): $(OBJS)
   	$(CC) $(LDFLAGS) -o $@ $^

   %.o: %.c
   	$(CC) $(CFLAGS) -c $< -o $@

   clean:
   	rm -f $(OBJS) $(TARGET)

Customize

If need customize kernel or re-design motherboard, please contact
sales@t-firefly.com