Creating directories and object libraries

Question

Hi,

 

I am trying to use the wiringPi library that I clone and install on my raspberry pi, but when executing the make of the project I get the following errors

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Creating object and library directories
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Linking EmbeddedWizard-RasPi-3B
cc -L/opt/vc/lib ./obj/main.o ./obj/ewmain.o ./obj/DeviceDriver.o ./obj/Core.o ./obj/Effects.o ./obj/Graphics.o ./obj/Resources.o ./obj/Views.o ./obj/WidgetSet.o ./obj/Application.o ./obj/ew_bsp_display.o ./obj/ew_bsp_touch.o ./obj/ew_bsp_console.o -L../../PlatformPackage/RTE -L../../PlatformPackage/RGBA8888 -lm -lbcm_host -lbrcmGLESv2 -lbrcmEGL -lpthread -lewrte -lewgfx -o ./EmbeddedWizard-RasPi-3B
/usr/bin/ld: ./obj/DeviceDriver.o: en la función `DeviceDriver_Initialize':
DeviceDriver.c:(.text+0x4): referencia a `wiringPiSetup' sin definir
/usr/bin/ld: DeviceDriver.c:(.text+0x10): referencia a `pinMode' sin definir
/usr/bin/ld: DeviceDriver.c:(.text+0x1c): referencia a `pinMode' sin definir
/usr/bin/ld: DeviceDriver.c:(.text+0x28): referencia a `pullUpDnControl' sin definir
/usr/bin/ld: ./obj/DeviceDriver.o: en la función `DeviceDriver_ProcessData':
DeviceDriver.c:(.text+0x84): referencia a `digitalRead' sin definir
/usr/bin/ld: ./obj/DeviceDriver.o: en la función `DeviceDriver_SetLedStatus':
DeviceDriver.c:(.text+0x108): referencia a `digitalWrite' sin definir
/usr/bin/ld: DeviceDriver.c:(.text+0x10c): referencia a `digitalWrite' sin definir
collect2: error: ld returned 1 exit status
make: *** [Makefile:140: EmbeddedWizard-RasPi-3B] Error 1

Could you help me?

-Fco

Answer 1

Hello Fco,

did you try the example 'DeviceIntegration' that is provided within the folder /Examples of the Raspberry Pi Build Environment? Does it work?

If yes - then everything is installed fine (including the WiringPi library). According to your error message, the linker does not find the WiringPi library. Please check your makefile and add the library.

if no - then try to install the WirinngPi library and try to get this example working.

Let me know your answers...

Best regards,

Manfred.