Forcing compiler to use CPP mode

1

I’m using Geekfactory Shell Library (GitHub - geekfactory/Shell: GeekFactory Shell Library - Library to create a simple Command Line Interface (CLI)., PlatformIO Registry).

Its sources are in C file (Shell.c). And I’m getting the following errors when building my project:

In file included from C:\users\fgka\.platformio\packages\framework-arduinoststm32-maple\STM32F1\cores\maple/wirish.h:58:0,
                 from C:\users\fgka\.platformio\packages\framework-arduinoststm32-maple\STM32F1\cores\maple/Arduino.h:30,
                 from .pio\libdeps\sam_v1\GeekFactory Shell Library_ID1946\Shell.h:31,
                 from .pio\libdeps\sam_v1\GeekFactory Shell Library_ID1946\Shell.c:20:
C:\users\fgka\.platformio\packages\framework-arduinoststm32-maple\STM32F1\cores\maple/ext_interrupts.h:90:6: error: conflicting types for 'attachInterrupt'
 void attachInterrupt(uint8 pin, voidArgumentFuncPtr handler, void *arg,
      ^~~~~~~~~~~~~~~
C:\users\fgka\.platformio\packages\framework-arduinoststm32-maple\STM32F1\cores\maple/ext_interrupts.h:69:6: note: previous declaration of 'attachInterrupt' was here
 void attachInterrupt(uint8 pin, voidFuncPtr handler, ExtIntTriggerMode mode);
      ^~~~~~~~~~~~~~~

As you can see, the compiler does not understand function overloading in C mode.
If I rename the file to Shell.cpp, the problem goes away.
Should I open an issue against the library, or the compiler can be forced to compile in CPP mode?

2

Doesn’t exist anyway, two functions which have the same name will have the same symbol name and therefore a conflict.

Seems like the library is not expecting an Arduino.h implementation which is not usable in C code. Should be tackled in the library. It would be really dirty to hack in a switch of compilers for a single file, so I’d recommend using a forked version of the lib via github or simply putting the fixed version in lib/.

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