Globally declared enum yields a series of unexpected compilation failures

[dorkusprime]

What kind of issue is this?

• Bug report. If you’ve found a bug, please provide information below.

Configuration

Operating system:
OS X El Capitan 10.11.3 (15D21)

PlatformIO Version (platformio --version):
PlatformIO, version 2.8.6

Description of problem

Attempting to compile the attached code causes a variable or field ... declared void error, followed by ... not declared in this scope errors.

Steps to Reproduce

1. Implement platform_test.ino code as-included
2. platformio run

Actual Results

[Sat Apr  9 12:36:22 2016] Processing uno (platform: atmelavr, board: uno, framework: arduino)
----------------------------------------------------------------------------------------------------------------------------------------
avr-g++ -o .pioenvs/uno/src/tmp_ino_to.o -c -fno-exceptions -fno-threadsafe-statics -std=gnu++11 -g -Os -Wall -ffunction-sections -fdata-sections -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO_ARCH_AVR -DARDUINO_AVR_UNO -DARDUINO=10608 -DPLATFORMIO=020806 -I.pioenvs/uno/FrameworkArduino -I.pioenvs/uno/FrameworkArduinoVariant src/tmp_ino_to.cpp
src/tmp_ino_to.cpp:3:17: error: variable or field 'myFunction' declared void
void myFunction(MyEnum bacon);
^
src/tmp_ino_to.cpp:3:17: error: 'MyEnum' was not declared in this scope
scons: *** [.pioenvs/uno/src/tmp_ino_to.o] Error 1
===================================================== [ ERROR ] Took 0.41 seconds =====================================================
09Apr2016 12:36:23 <wild@WildBookPro:~/Documents/Arduino/platformio_test> platformio run
[Sat Apr  9 12:36:37 2016] Processing uno (platform: atmelavr, board: uno, framework: arduino)
----------------------------------------------------------------------------------------------------------------------------------------
avr-g++ -o .pioenvs/uno/src/tmp_ino_to.o -c -fno-exceptions -fno-threadsafe-statics -std=gnu++11 -g -Os -Wall -ffunction-sections -fdata-sections -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO_ARCH_AVR -DARDUINO_AVR_UNO -DARDUINO=10608 -DPLATFORMIO=020806 -I.pioenvs/uno/FrameworkArduino -I.pioenvs/uno/FrameworkArduinoVariant src/tmp_ino_to.cpp
src/tmp_ino_to.cpp:7:17: error: variable or field 'myFunction' declared void
void myFunction(MyEnum bacon);
^
src/tmp_ino_to.cpp:7:17: error: 'MyEnum' was not declared in this scope
platformio_test.ino: In function 'void loop()':
platformio_test.ino:11:19: error: 'myFunction' was not declared in this scope
scons: *** [.pioenvs/uno/src/tmp_ino_to.o] Error 1
===================================================== [ ERROR ] Took 0.39 seconds =====================================================

Expected Results

Successful compilation

If problems with PlatformIO Build System:

The content of platformio.ini:

[env:uno]
platform = atmelavr
framework = arduino
board = uno

Source file (platform_test.ino) to reproduce issue:

enum MyEnum { X, Y, Z };

void setup()
{
  Serial.begin(9600);
}

void loop()
{
  MyEnum crunchy = X;
  myFunction(crunchy);
}

void myFunction(MyEnum bacon)
{
 if (bacon == X) {
   Serial.println("x");
 } else {
   Serial.println("not x");
 }
}

Additional info

• This code compiles successfully in the Arduino IDE
• Several other Arduino sketches have successfully compiled in Platformio on this same setup

[ivankravets]

Temporary solution:

1. Rename file to .cpp
2. Place on the top of file #include <Arduino.h>

[dorkusprime]

Confirmed. The following code compiles successfully.

platformio_test.cpp:

#include <Arduino.h>

enum MyEnum { X, Y, Z };
void myFunction(MyEnum bacon);

void setup()
{
  Serial.begin(9600);
}

void loop()
{
  MyEnum crunchy = X;
  myFunction(crunchy);
}

void myFunction(MyEnum bacon)
{
 if (bacon == X) {
   Serial.println("x");
 } else {
   Serial.println("not x");
 }
}