rp2040 connect with unity tests fails to build

[torntrousers]

Hi, I'm trying to add unity tests to an rp2040 connect project.

I take the basic blink example: https://github.com/platformio/platform-raspberrypi/tree/develop/examples/arduino-blink

and that builds and runs fine.

Then I add this empty uinty test in the test folder:

#include <Arduino.h>
#include <unity.h>

void setup() {

    delay(2000);
    UNITY_BEGIN(); // start unit testing

}

void loop() {
    UNITY_END(); // stop unit testing
}

and running that fails with:

> Executing task: C:\Users\tornt\.platformio\penv\Scripts\platformio.exe test <

Verbose mode can be enabled via `-v, --verbose` option
Collected 1 items

Processing * in nanorp2040connect environment
------------------------------------------------------------------------------------------------------------------------------------------------------------------Building...
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from test\test_main.cpp:1:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      | 
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from test\tmp_pio_test_transport.cpp:1:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      | 
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from .pio\libdeps\nanorp2040connect\ArduinoHttpClient\src\HttpClient.h:8,
                 from .pio\libdeps\nanorp2040connect\ArduinoHttpClient\src\HTTPClient.cpp:5:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      | 
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from .pio\libdeps\nanorp2040connect\ArduinoHttpClient\src\URLEncoder.h:8,
                 from .pio\libdeps\nanorp2040connect\ArduinoHttpClient\src\URLEncoder.cpp:5:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from .pio\libdeps\nanorp2040connect\ArduinoHttpClient\src\WebSocketClient.h:7,
                 from .pio\libdeps\nanorp2040connect\ArduinoHttpClient\src\WebSocketClient.cpp:6:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from .pio\libdeps\nanorp2040connect\PubSubClient\src\PubSubClient.h:10,
                 from .pio\libdeps\nanorp2040connect\PubSubClient\src\PubSubClient.cpp:8:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\nina_pins.h:8,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\nina_pins.cpp:1:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\variant.cpp:1:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\Interrupts.cpp:19:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\Serial.cpp:23:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\Tone.cpp:1:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\USB\PluggableUSBDevice.cpp:18:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\USB\USBCDC.cpp:19:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\USB\USBSerial.cpp:18:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/macros.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\double_tap_usb_boot.cpp:6:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2040/hardware_regs/include/hardware/platform_defs.h:12,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2_common/pico_platform/include/pico/platform.h:12,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/common/pico_base/include/pico.h:19,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\double_tap_usb_boot.cpp:2:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2_common/hardware_timer/include/hardware/timer.h: In function 'uint32_t time_us_32()':
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2040/hardware_regs/include/hardware/regs/addressmap.h:56:20: warning: type qualifiers ignored on cast result type [-Wignored-qualifiers]
   56 | #define TIMER_BASE 0x40054000
      |                    ^~~~~~~~~~
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2040/hardware_structs/include/hardware/structs/timer.h:33:38: note: in expansion of macro 'TIMER_BASE'
   33 | #define timer_hw ((timer_hw_t *const)TIMER_BASE)
      |                                      ^~~~~~~~~~
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2_common/hardware_timer/include/hardware/timer.h:66:12: note: in expansion of macro 'timer_hw'
   66 |     return timer_hw->timerawl;
      |            ^~~~~~~~
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2_common/hardware_timer/include/hardware/timer.h: In function 'bool time_reached(absolute_time_t)':
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2040/hardware_regs/include/hardware/regs/addressmap.h:56:20: warning: type qualifiers ignored on cast result type [-Wignored-qualifiers]
   56 | #define TIMER_BASE 0x40054000
      |                    ^~~~~~~~~~
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2040/hardware_structs/include/hardware/structs/timer.h:33:38: note: in expansion of macro 'TIMER_BASE'
   33 | #define timer_hw ((timer_hw_t *const)TIMER_BASE)
      |                                      ^~~~~~~~~~
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2_common/hardware_timer/include/hardware/timer.h:110:19: note: in expansion of macro 'timer_hw'
  110 |     uint32_t hi = timer_hw->timerawh;
      |                   ^~~~~~~~
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2040/hardware_regs/include/hardware/regs/addressmap.h:56:20: warning: type qualifiers ignored on cast result type [-Wignored-qualifiers]
   56 | #define TIMER_BASE 0x40054000
      |                    ^~~~~~~~~~
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2040/hardware_structs/include/hardware/structs/timer.h:33:38: note: in expansion of macro 'TIMER_BASE'
   33 | #define timer_hw ((timer_hw_t *const)TIMER_BASE)
      |                                      ^~~~~~~~~~
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/mbed/targets/TARGET_RASPBERRYPI/TARGET_RP2040/pico-sdk/rp2_common/hardware_timer/include/hardware/timer.h:111:33: note: in expansion of macro 'timer_hw'
  111 |     return (hi >= hi_target && (timer_hw->timerawl >= (uint32_t) target || hi != hi_target));
      |                                 ^~~~~~~~
.pio\libdeps\nanorp2040connect\ArduinoHttpClient\src\HTTPClient.cpp: In member function 'int HttpClient::startRequest(const char*, const char*, const char*, int, 
const byte*)':
.pio\libdeps\nanorp2040connect\ArduinoHttpClient\src\HTTPClient.cpp:87:61: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
   87 |             if (!iClient->connect(iServerName, iServerPort) > 0)
      |                                                             ^
.pio\libdeps\nanorp2040connect\ArduinoHttpClient\src\HTTPClient.cpp:87:17: note: add parentheses around left hand side expression to silence this warning
   87 |             if (!iClient->connect(iServerName, iServerPort) > 0)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                 (                                          )
.pio\libdeps\nanorp2040connect\ArduinoHttpClient\src\HTTPClient.cpp:97:64: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
   97 |             if (!iClient->connect(iServerAddress, iServerPort) > 0)
      |                                                                ^
.pio\libdeps\nanorp2040connect\ArduinoHttpClient\src\HTTPClient.cpp:97:17: note: add parentheses around left hand side expression to silence this warning
   97 |             if (!iClient->connect(iServerAddress, iServerPort) > 0)
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                 (                                             )
.pio\libdeps\nanorp2040connect\PubSubClient\src\PubSubClient.cpp: In member function 'boolean PubSubClient::publish_P(const char*, const uint8_t*, unsigned int, boolean)':
.pio\libdeps\nanorp2040connect\PubSubClient\src\PubSubClient.cpp:523:16: warning: comparison of integer expressions of different signedness: 'unsigned int' and 'int' [-Wsign-compare]
  523 |     return (rc == expectedLength);
      |             ~~~^~~~~~~~~~~~~~~~~
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\arm_hal_random.c:1:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\main.cpp:20:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\pinToIndex.cpp:1:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\timer.cpp:1:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\wiring_analog.cpp:23:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\wiring_digital.cpp:23:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\wiring_pulse.cpp:1:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino/Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\wiring_shift.cpp:23:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
In file included from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/pinmode_arduino.h:23,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\Arduino.h:26,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\wiring_private.h:29,
                 from C:\Users\tornt\.platformio\packages\framework-arduino-mbed\cores\arduino\wiring.cpp:23:
C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT/mbed_config.h:310: warning: "UNITY_INCLUDE_CONFIG_H" redefined
  310 | #define UNITY_INCLUDE_CONFIG_H
                 // defined by library:utest
      |
<command-line>: note: this is the location of the previous definition
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityPrintNumberUnsigned':
unity.c:(.text.UnityPrintNumberUnsigned+0x0): multiple definition of `UnityPrintNumberUnsigned'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityPrintNumberUnsigned+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityPrintNumber':
unity.c:(.text.UnityPrintNumber+0x0): multiple definition of `UnityPrintNumber'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityPrintNumber+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityPrintNumberHex':
unity.c:(.text.UnityPrintNumberHex+0x0): multiple definition of `UnityPrintNumberHex'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityPrintNumberHex+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityPrint':
unity.c:(.text.UnityPrint+0x0): multiple definition of `UnityPrint'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityPrint+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: warning: size of symbol `Unity' changed from 132 in .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o) to 160 in C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o)
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityPrintLen':
unity.c:(.text.UnityPrintLen+0x0): multiple definition of `UnityPrintLen'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityPrintLen+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityPrintNumberByStyle':
unity.c:(.text.UnityPrintNumberByStyle+0x0): multiple definition of `UnityPrintNumberByStyle'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityPrintNumberByStyle+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityPrintMask':
unity.c:(.text.UnityPrintMask+0x0): multiple definition of `UnityPrintMask'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityPrintMask+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityPrintFloat':
unity.c:(.text.UnityPrintFloat+0x0): multiple definition of `UnityPrintFloat'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityPrintFloat+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityConcludeTest':
unity.c:(.text.UnityConcludeTest+0x0): multiple definition of `UnityConcludeTest'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityConcludeTest+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityAssertBits':
unity.c:(.text.UnityAssertBits+0x0): multiple definition of `UnityAssertBits'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityAssertBits+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityAssertEqualNumber':
unity.c:(.text.UnityAssertEqualNumber+0x0): multiple definition of `UnityAssertEqualNumber'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityAssertEqualNumber+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityAssertEqualIntArray':
unity.c:(.text.UnityAssertEqualIntArray+0x0): multiple definition of `UnityAssertEqualIntArray'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityAssertEqualIntArray+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityAssertEqualFloatArray':
unity.c:(.text.UnityAssertEqualFloatArray+0x0): multiple definition of `UnityAssertEqualFloatArray'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityAssertEqualFloatArray+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityAssertFloatsWithin':
unity.c:(.text.UnityAssertFloatsWithin+0x0): multiple definition of `UnityAssertFloatsWithin'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityAssertFloatsWithin+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityAssertFloatSpecial':
unity.c:(.text.UnityAssertFloatSpecial+0x0): multiple definition of `UnityAssertFloatSpecial'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityAssertFloatSpecial+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityAssertNumbersWithin':
unity.c:(.text.UnityAssertNumbersWithin+0x0): multiple definition of `UnityAssertNumbersWithin'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityAssertNumbersWithin+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityAssertEqualString':
unity.c:(.text.UnityAssertEqualString+0x0): multiple definition of `UnityAssertEqualString'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityAssertEqualString+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityAssertEqualStringLen':
unity.c:(.text.UnityAssertEqualStringLen+0x0): multiple definition of `UnityAssertEqualStringLen'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityAssertEqualStringLen+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityAssertEqualStringArray':
unity.c:(.text.UnityAssertEqualStringArray+0x0): multiple definition of `UnityAssertEqualStringArray'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityAssertEqualStringArray+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityAssertEqualMemory':
unity.c:(.text.UnityAssertEqualMemory+0x0): multiple definition of `UnityAssertEqualMemory'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityAssertEqualMemory+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityFail':
unity.c:(.text.UnityFail+0x0): multiple definition of `UnityFail'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityFail+0x0): first 
defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityIgnore':
unity.c:(.text.UnityIgnore+0x0): multiple definition of `UnityIgnore'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityIgnore+0x0): 
first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityDefaultTestRun':
unity.c:(.text.UnityDefaultTestRun+0x0): multiple definition of `UnityDefaultTestRun'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityDefaultTestRun+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityBegin':
unity.c:(.text.UnityBegin+0x0): multiple definition of `UnityBegin'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityBegin+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o): in function `UnityEnd':
unity.c:(.text.UnityEnd+0x0): multiple definition of `UnityEnd'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):unity.c:(.text.UnityEnd+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o):(.rodata.UnityStrErr64+0x0): multiple definition of `UnityStrErr64'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):(.rodata.UnityStrErr64+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o):(.rodata.UnityStrErrDouble+0x0): multiple definition of `UnityStrErrDouble'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):(.rodata.UnityStrErrDouble+0x0): first defined here
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs\libmbed.a(unity.o):(.rodata.UnityStrErrFloat+0x0): multiple definition of `UnityStrErrFloat'; .pio\build\nanorp2040connect\libUnityTestLib.a(unity.c.o):(.rodata.UnityStrErrFloat+0x0): first defined here
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\nanorp2040connect\firmware.elf] Error 1
================================================================== [FAILED] Took 10.36 seconds ==================================================================

Test    Environment        Status    Duration
------  -----------------  --------  ------------
*       nanorp2040connect  FAILED    00:00:10.362
============================================================= 1 failed, 0 succeeded in 00:00:10.362 ============================================================= 
The terminal process "C:\Users\tornt\.platformio\penv\Scripts\platformio.exe 'test'" terminated with exit code: 1.

Terminal will be reused by tasks, press any key to close it.

What am I doing wrong?

TIA!

[torntrousers]

I found this and this and trying the suggestion in there:

C:\Users\tornt\.platformio\packages\framework-arduino-mbed\variants\NANO_RP2040_CONNECT\libs>..\..\..\..\..\..\.platformio\packages\toolchain-gccarmnoneeabi\bin\arm-none-eabi-ar.exe dv libmbed.a unity.o unity_handler.o
..\..\..\..\..\..\.platformio\packages\toolchain-gccarmnoneeabi\bin\arm-none-eabi-ar.exe: creating libmbed.a
No member named `unity.o'
No member named `unity_handler.o'

and now the build fails with:

Processing * in nanorp2040connect environment
--------------------------------------------------------------------------------------------------------------------------------------------------Building...
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: ERROR: Pico 
second stage bootloader must be 256 bytes in size
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: warning: cannot find entry symbol _entry_point; defaulting to 0000000010000000
c:/users/tornt/.platformio/packages/toolchain-gccarmnoneeabi/bin/../lib/gcc/arm-none-eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: .pio\build\nanorp2040connect\libFrameworkArduinoVariant.a(double_tap_usb_boot.cpp.o): in function `_GLOBAL__sub_I.00101_dt':
double_tap_usb_boot.cpp:(.text.startup._GLOBAL__sub_I.00101_dt+0x2a): undefined reference to `rom_func_lookup'

...

collect2.exe: error: ld returned 1 exit status
*** [.pio\build\nanorp2040connect\firmware.elf] Error 1
=========================================================== [FAILED] Took 1.25 seconds ===========================================================

Is that something to do with me having a Windows environment perhaps?

[torntrousers]

Actually, previously I think I must have messed up the arm-none-eabi-ar.exe dv libmbed.a unity.o unity_handler.o command, trying that now and the suggestion from https://community.platformio.org/t/cannot-build-tests/22066/2 does get the Unity tests working on the rp2040.