Multiple libraries were found

[mrguen]

Error at compilation:
"Multiple libraries were found for ..."
for all the libraries that the sketch is using.

I checked if there was multiple libraries by searching in the explorer. The only duplicate (after failed compilation) is for example:

C:\Users\TG\AppData\Local\Temp\arduino_build_836171\libraries\Adafruit_GFX_Library
and
C:\Users\TG\Documents\Arduino\libraries\Adafruit_GFX_Library

So apparently the compiler is confused by the content of C:\Users\TG\AppData\Local\Temp\arduino_build_836171

Configuration

Windows 7 pro 64 bits
IDE 1.8.10
Arduino core STM32 1.7.0

Board: Generic STM32F1 Series
Board part number: BluePill F103C8
USART support: enabled (generic serial)
USB support: CDC supersede USART
USB: Low/full speed
Optimize: smallest
C runtime library: Newlib nano (default)
Upload method Maple DFU bootloader 2.0

[fpistm]

This is Arduino IDE issue. Try to close and reopen.

[mrguen]

Tried to restart the computer: same. Also is a compilation time from 1 to 3 minutes. Something changed either with IDE 1.8.10 or core 1.7.0 or something else because it was not like that before.

[fpistm]

I guess it is a malformed library or something like that but I could not help on this.

[mrguen]

I also noticed other things:

I tried to clean AppData and reinstall boards:

• installing STM32 Cores takes forever
• it is HUGE aroung 835 Mb!

[fpistm]

• installing STM32 Cores takes forever

Mainly on Windows and it is worst if you have an antivirus.

• it is HUGE aroung 835 Mb!

ARM GCC toolchain + CMSIS take around 600 Mb.

[fpistm]

@mrguen
I've just met this issue working on another stuff.
In fact the message seems told Adafruit_GFX_Library was the problem but in fact it misses one other.

Alternatives for Adafruit_miniTFTWing.h: []
ResolveLibrary(Adafruit_miniTFTWing.h)
  -> candidates: []
basic:3:10: error: Adafruit_miniTFTWing.h: No such file or directory
Multiple libraries were found for "SPI.h"
 #include "Adafruit_miniTFTWing.h"
 Used: /local/data/work/IDE/arduino/arduino-1.8.10/portable/packages/STM32/hardware/stm32/1.6.1/libraries/SPI
          ^~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Multiple libraries were found for "Adafruit_GFX.h"
 Used: /local/data/work/IDE/arduino/arduino-1.8.10/portable/sketchbook/libraries/Adafruit_GFX_Library
Multiple libraries were found for "Adafruit_ST7735.h"
 Used: /local/data/work/IDE/arduino/arduino-1.8.10/portable/sketchbook/libraries/Adafruit_ST7735_and_ST7789_Library
Using library Adafruit_GFX_Library at version 1.6.1 in folder: /local/data/work/IDE/arduino/arduino-1.8.10/portable/sketchbook/libraries/Adafruit_GFX_Library 
Using library Adafruit_ST7735_and_ST7789_Library at version 1.5.6 in folder: /local/data/work/IDE/arduino/arduino-1.8.10/portable/sketchbook/libraries/Adafruit_ST7735_and_ST7789_Library 
Using library SPI at version 1.0 in folder: /local/data/work/IDE/arduino/arduino-1.8.10/portable/packages/STM32/hardware/stm32/1.6.1/libraries/SPI 
exit status 1
Adafruit_miniTFTWing.h: No such file or directory

You should enable all verbose output in preferences.

[mrguen]

Yes the same issue but

• raised for all the libraries used in the project

collect2.exe: error: ld returned 1 exit status Multiple libraries were found for "Adafruit_GFX.h" Used: C:\Users\TG\Documents\Arduino\libraries\Adafruit_GFX_Library Multiple libraries were found for "Adafruit_ST7735.h" Used: C:\Users\TG\Documents\Arduino\libraries\Adafruit_ST7735_and_ST7789_Library Multiple libraries were found for "SPI.h" Used: C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.7.0\libraries\SPI Multiple libraries were found for "OneButton.h" Used: C:\Users\TG\Documents\Arduino\libraries\OneButton-master Multiple libraries were found for "EEPROM.h" Used: C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.7.0\libraries\EEPROM Multiple libraries were found for "Si5351A.h" Used: C:\Users\TG\Documents\Arduino\libraries\Pandauino-Si5351A Multiple libraries were found for "Wire.h" Used: C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.7.0\libraries\Wire Multiple libraries were found for "RotaryEncoder.h" Used: C:\Users\TG\Documents\Arduino\libraries\RotaryEncoder-master exit status 1

• happens only when using the maple DFU 2.0 upload method / not when using STMCubeProgrammer for example

And I am sorry I don't get if you have an answer to the problem?

[fpistm]

Copy the full log with All verbose output enable in the Arduino preference

[fpistm]

And "Multiple libraries were found for ..." is not an error.
Arduino simply says that it found several library and which one it used.

[fpistm]

And what is exactly the libraries you use? And where they come from?

[mrguen]

Ok, I get it. The assembly is too big when using Maple DFU method.

[fpistm]

yes.
Seriously, please before submit an issue read carefully the log. Or at least provide a full log...
It really a time consuming issue for nothing... I always pleased to help but when it is really needed.

[mrguen]

Sorry. I am also quite tired with waiting 3 minutes for compilation and so many parameters and upload method that I can't make work that I quite "loose my latin" as we say in french.