Can't compile

[RobAnt]

Hello-

I just built this from a kit from synthCube and am stuck at the firmware portion.

I already had the Arduino IDE as I've used it in the past. added the Teensy board, and grabbed the code.

When running a verify I get the following error:

C:\Users\roban\Documents\Arduino\temps_utile--master\soft\t_u_REV\TU_pattern_edit.h: In member function 'void TU::PatternEditor<Owner>::handleButtonUp(const UI::Event&)':
C:\Users\roban\Documents\Arduino\temps_utile--master\soft\t_u_REV\TU_pattern_edit.h:407:24: warning: '~' on an expression of type 'bool' [-Wbool-operation]
  407 |       fine_coarse_ = (~fine_coarse_) & 1u;
      |                        ^~~~~~~~~~~~
C:\Users\roban\Documents\Arduino\temps_utile--master\soft\t_u_REV\TU_pattern_edit.h:407:24: note: did you mean to use logical not ('!')?
C:\Users\roban\Documents\Arduino\temps_utile--master\soft\t_u_REV\TU_pattern_edit.h: In instantiation of 'void TU::PatternEditor<Owner>::handleButtonUp(const UI::Event&) [with Owner = Clock_channel]':
C:\Users\roban\Documents\Arduino\temps_utile--master\soft\t_u_REV\TU_pattern_edit.h:293:9:   required from 'void TU::PatternEditor<Owner>::HandleButtonEvent(const UI::Event&) [with Owner = Clock_channel]'
C:\Users\roban\Documents\Arduino\temps_utile--master\soft\t_u_REV\APP_CLK.ino:2703:50:   required from here
C:\Users\roban\Documents\Arduino\temps_utile--master\soft\t_u_REV\TU_pattern_edit.h:407:24: warning: '~' on an expression of type 'bool' [-Wbool-operation]
C:\Users\roban\Documents\Arduino\temps_utile--master\soft\t_u_REV\TU_pattern_edit.h:407:24: note: did you mean to use logical not ('!')?
c:/users/roban/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/../../../../arm-none-eabi/bin/ld.exe: c:/users/roban/appdata/local/arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/../lib/gcc/arm-none-eabi/11.3.1/thumb/v7e-m/nofp\libc.a(libc_a-writer.o): in function `_write_r':
(.text._write_r+0x14): undefined reference to `_write'
collect2.exe: error: ld returned 1 exit status

exit status 1

Compilation error: exit status 1

I know the tilde is a bitwise NOT and fine_course_ is declared as a bool. Should I just change the ~ to a ! and hope it works? Didn't want to mess things up hence asking the question...

Thanks!

[patrickdowling]

The warning is annoying but not critical., the error

...undefined reference to `_write'

is from the linker so that's the Teensy/Arduino "stuff". Not sure if there's an easy workaround (maybe turning off lto?) so you might need to use an older version. I gave up on the IDE long ago for platformio -- see this branch -- but really there isn't any on-going maintenance there either :)

[booleanvalue]

This helps https://forum.pjrc.com/index.php?threads/undefined-reference-to-_write.71420/

Do note that it still won't compile for 3.2 if the program has no usage of any Print class members without at least: Serial.println("setup begin"); // won't compile on Teensy 3.x without this line