Redefinition/previous definition of class errors during compilation with PlatformIO

[anweiss]

Getting a number of redefinition of class ... and previous definition of class ... errors when using PlatformIO. I have included the library in to my project via pio lib install BLEPeripheral. Not sure why this is occurring because the header files that it's referencing include header guards.

[sandeepmistry]

@anweiss do you have more context for the compile errors? Including target board etc.

I don't really use PlatformIO my self, maybe @vojtamolda can help you out ...

[anweiss]

Sure thing. I'm targeting the Arduino 101. Indeed, one can use the CurieBLE library, however, I'm basing my particular use case off of this code -> https://github.com/adafruit/Adafruit_Curie_Bot/tree/master/Ada_CurieBot_RC ... which inherits from this library (https://github.com/adafruit/Adafruit_Curie_Bot/blob/master/Ada_CurieBot_RC/BLESerial.h#L18).

Some more context below:

In file included from .piolibdeps/BLEPeripheral_ID259/src/utility/lib_aci.h:34:0,
from .piolibdeps/BLEPeripheral_ID259/src/nRF8001.h:9,
from .piolibdeps/BLEPeripheral_ID259/src/BLEPeripheral.h:26,
from src/Ada_CurieBot_RC.cpp:23:
.piolibdeps/BLEPeripheral_ID259/src/utility/hal_platform.h:75:6: error: #error "Unsupported platform"
#error "Unsupported platform"
^
In file included from .piolibdeps/BLEPeripheral_ID259/src/utility/lib_aci.h:35:0,
from .piolibdeps/BLEPeripheral_ID259/src/nRF8001.h:9,
from .piolibdeps/BLEPeripheral_ID259/src/BLEPeripheral.h:26,
from src/Ada_CurieBot_RC.cpp:23:
.piolibdeps/BLEPeripheral_ID259/src/utility/hal_aci_tl.h:60:0: warning: "UNUSED" redefined [enabled by default]
#define UNUSED      255
^
In file included from /Users/<user>/.platformio/packages/framework-arduinointel/system/libarc32_arduino101/framework/include/os/os.h:34:0,
from /Users/<user>/.platformio/packages/framework-arduinointel/system/libarc32_arduino101/framework/include/cfw/cfw.h:37,
from /Users/<user>/.platformio/packages/framework-arduinointel/system/libarc32_arduino101/framework/include/services/ble/ble_service_gap_api.h:34,
from /Users/<user>/.platformio/packages/framework-arduinointel/system/libarc32_arduino101/framework/include/services/ble/ble_service_gatt.h:35,
from /Users/<user>/.platformio/packages/framework-arduinointel/libraries/CurieBLE/src/BLECommon.h:26,
from /Users/<user>/.platformio/packages/framework-arduinointel/libraries/CurieBLE/src/BLEAttribute.h:23,
from /Users/<user>/.platformio/packages/framework-arduinointel/libraries/CurieBLE/src/BLECharacteristic.h:23,
from /Users/<user>/.platformio/packages/framework-arduinointel/libraries/CurieBLE/src/CurieBLE.h:20,
from src/Ada_CurieBot_RC.cpp:22:
/Users/<user>/.platformio/packages/framework-arduinointel/system/libarc32_arduino101/framework/include/os/os_types.h:42:0: note: this is the location of the previous definition
#define UNUSED(p) (void)(p)
^
In file included from .piolibdeps/BLEPeripheral_ID259/src/BLEPeripheral.h:10:0,
from src/Ada_CurieBot_RC.cpp:23:
.piolibdeps/BLEPeripheral_ID259/src/BLECentral.h:9:7: error: redefinition of ‘class BLECentral’
class BLECentral
^

and so on with similar errors ...

[vojtamolda]

Hello @anweiss,

I think your problem isn't caused PlatformIO. You're mixing BLEPeripheral and CurieBLE libraries in your project. Both libraries have nearly identical API, but you can't use them together to build Arduino 101 code. Having BLEPeripheral installed causes the double definition problems because Arduino Intel build framework has the classes already included.

Just replace all the #include directives to use CurieBLE instead and delete BLEPeripheral from your PlatfromIO build and you should be able to build without any issues.

[anweiss]

Thanks @vojtamolda ... managed to build without issue ... however, for some reason, BLEPeripheral::begin() from CurieBLE does not seem to execute when using PlatformIO. When using the Arduino IDE, the same exact code works fine. Will move this to the PlatformIO threads.