Hi.
I’m trying to use the included C examples for the different hardware features of the ROCK PI S.
When I try to compile them, I realize that the compiler does not find multiple functions of the mraa library.For example, when I compile gpio.c, I get this:
*rock@rockpis:~/controller$ gcc gpio.c -o gp
/tmp/cceUb7kR.o: In function main': gpio.c:(.text+0x74): undefined reference to mraa_init’
gpio.c:(.text+0x7c): undefined reference to mraa_gpio_init' gpio.c:(.text+0xb4): undefined reference to mraa_deinit’
gpio.c:(.text+0xc4): undefined reference to mraa_gpio_init' gpio.c:(.text+0xfc): undefined reference to mraa_deinit’
gpio.c:(.text+0x110): undefined reference to mraa_gpio_dir' gpio.c:(.text+0x12c): undefined reference to mraa_gpio_dir’
gpio.c:(.text+0x14c): undefined reference to mraa_gpio_write' gpio.c:(.text+0x168): undefined reference to mraa_gpio_write’
gpio.c:(.text+0x18c): undefined reference to mraa_gpio_write' gpio.c:(.text+0x1a8): undefined reference to mraa_gpio_write’
gpio.c:(.text+0x1dc): undefined reference to mraa_gpio_close' gpio.c:(.text+0x1f4): undefined reference to mraa_gpio_close’
gpio.c:(.text+0x208): undefined reference to mraa_deinit' gpio.c:(.text+0x254): undefined reference to mraa_result_print’
gpio.c:(.text+0x258): undefined reference to `mraa_deinit’
collect2: error: ld returned 1 exit status
rock@rockpis:~/controller$
*
I apologize for my lack of knowledge, but I am really new to these devices.
Thanks a lot
Gonzalo