Can't find files that I know exist in a project that compiled yesterday [SOLVED]

oceansource · August 28, 2019, 3:03pm

Hey I just wanted to write a post about something that just happened to me.

When I start to code, I grab the last state of my project, copy it, and paste it, update the date, and maybe add a note about what I was working on that day.

I did that this morning and started getting compile errors about library dependency files not existing.

After a little bit of head scratching I came to the conclusion that the compiler must be generating absolute file paths while going through my dependencies. I think that the file paths got too long when I changed the name of the project directory, and suddenly PlatformIO couldn’t read the files.

Just move the project directory to directory that is closer to the root directory of your system and that seems to fix that problem.

Hopefully that helps someone out there!

Also - I was wondering if it would be possible to make a more detailed compiler error for when this happens?

Here is an example of my compiler output:

Compiling .pio\build\teensy36\src\main.cpp.o
Compiling .pio\build\teensy36\lib5c8\External_ADC_Class\ADS1015.cpp.o
Compiling .pio\build\teensy36\lib5c8\External_ADC_Class\External_ADC_Class.cpp.o
Compiling .pio\build\teensy36\lib14a\Gen3_SPI\Gen3_SPI.cpp.o
In file included from lib\T36_Time/..\..\include\..\lib\ArduinoJson\src/ArduinoJson/Array/../Variant/../Misc/../Strings/../Memory/../Variant/VariantSlot.hpp:8:0,
                 from lib\T36_Time/..\..\include\..\lib\ArduinoJson\src/ArduinoJson/Array/../Variant/../Misc/../Strings/../Memory/MemoryPool.hpp:9,
                 from lib\T36_Time/..\..\include\..\lib\ArduinoJson\src/ArduinoJson/Array/../Variant/../Misc/../Strings/StringAdapters.hpp:7,
                 from lib\T36_Time/..\..\include\..\lib\ArduinoJson\src/ArduinoJson/Array/../Variant/../Misc/SerializedValue.hpp:7,
                 from lib\T36_Time/..\..\include\..\lib\ArduinoJson\src/ArduinoJson/Array/../Variant/VariantData.hpp:7,
                 from lib\T36_Time/..\..\include\..\lib\ArduinoJson\src/ArduinoJson/Array/ArrayRef.hpp:7,
                 from lib\T36_Time/..\..\include\..\lib\ArduinoJson\src/ArduinoJson.hpp:17,
                 from lib\T36_Time/..\..\include\..\lib\ArduinoJson\src/ArduinoJson.h:9,
                 from lib\T36_Time/..\..\include\..\lib\ArduinoJson\ArduinoJson.h:5,
                 from lib\T36_Time/..\..\include\includes.h:8,
                 from src\main.cpp:4:
lib\T36_Time/..\..\include\..\lib\ArduinoJson\src/ArduinoJson/Array/../Variant/../Misc/../Strings/../Memory/../Variant/../Polyfills/type_traits.hpp:9:45: fatal error: type_traits/integral_constant.hpp: No such file or directory
compilation terminated.

manuelbl · August 28, 2019, 4:34pm

This is unfortunate effect of the way ArduinoJson uses include paths. The author has now fixed it and it should be available with the upcoming release 6.12.

Also see:

github.com/bblanchon/ArduinoJson

Fails to compile in PlatformIO due to long path

opened 03:19PM - 11 Aug 19 UTC

closed 09:58AM - 26 Aug 19 UTC

manuelbl

bug

The library fails to compile in PlatformIO with the below error message: ``` .…pio\libdeps\nanoatmega328\ArduinoJson_ID64\src/ArduinoJson/Array/../Variant/../Misc/../Strings/../Memory/../Variant/../Polyfills/type_traits.hpp:9:45: fatal error: type_traits/integral_constant.hpp: No such file or directory ``` The problem only occurs on Windows and only if the PlatformIO project is in a location with long path name. In my case, the project location `C:\Users\SomeUser\Documents\PlatformIO\Projects\Nano-ArduinoJson` worked while the path `C:\Users\SomeUser\Documents\LongPathLongPathLongPath\LongPathLongPath\LongPathLongPath\Nano-ArduinoJson` failed. Note that PlatformIO downloads the library to a directory within the project directory and compiles it there. So the full include path to the include file becomes: ``` C:\Users\SomeUser\Documents\PlatformIO\Projects\Nano-ArduinoJson\.pio\libdeps\nanoatmega328\ArduinoJson_ID64\src/ArduinoJson/Array/../Variant/../Misc/../Strings/../Memory/../Variant/../Polyfills/type_traits.hpp ``` Even though a good part of the path length is caused by PlatformIO, it would seem that the ArduinoJson part `ArduinoJson/Array/../Variant/../Misc/../Strings/../Memory/../Variant/../Polyfills` has ample opportunity for improvement. At the same time, the cyclomatic complexity of the software would be reduced. Workaround: Move the project to a location with a shorter path. To reproduce use the below minimal PlatformIO project: **platformio.ini** ``` [env:nanatmega328] platform = atmelavr board = nanoatmega328 framework = arduino lib_deps = ArduinoJson ``` **main.cpp** ``` #include <Arduino.h> #include "ArduinoJson.h" void setup() { } void loop() { } ``` **Build log** ``` > Executing task: C:\Users\SomeUser\.platformio\penv\Scripts\platformio.exe run < Processing nanoatmega328 (platform: atmelavr; board: nanoatmega328; framework: arduino) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Verbose mode can be enabled via `-v, --verbose` option CONFIGURATION: https://docs.platformio.org/page/boards/atmelavr/nanoatmega328.html PLATFORM: Atmel AVR 1.15.0 > Arduino Nano ATmega328 HARDWARE: ATMEGA328P 16MHz, 2KB RAM, 30KB Flash PACKAGES: toolchain-atmelavr 1.50400.190710 (5.4.0), framework-arduinoavr 4.1.1 LDF: Library Dependency Finder -> http://bit.ly/configure-pio-ldf LDF Modes: Finder ~ chain, Compatibility ~ soft Found 9 compatible libraries Scanning dependencies... Dependency Graph |-- <ArduinoJson> 6.11.3 Compiling .pio\build\nanoatmega328\src\main.cpp.o Archiving .pio\build\nanoatmega328\libfad\libArduinoJson_ID64.a Archiving .pio\build\nanoatmega328\libFrameworkArduinoVariant.a Compiling .pio\build\nanoatmega328\FrameworkArduino\CDC.cpp.o Compiling .pio\build\nanoatmega328\FrameworkArduino\HardwareSerial.cpp.o Compiling .pio\build\nanoatmega328\FrameworkArduino\HardwareSerial0.cpp.o Compiling .pio\build\nanoatmega328\FrameworkArduino\HardwareSerial1.cpp.o Compiling .pio\build\nanoatmega328\FrameworkArduino\HardwareSerial2.cpp.o In file included from .pio\libdeps\nanoatmega328\ArduinoJson_ID64\src/ArduinoJson/Array/../Variant/../Misc/../Strings/../Memory/../Variant/VariantSlot.hpp:8:0, from .pio\libdeps\nanoatmega328\ArduinoJson_ID64\src/ArduinoJson/Array/../Variant/../Misc/../Strings/../Memory/MemoryPool.hpp:9, from .pio\libdeps\nanoatmega328\ArduinoJson_ID64\src/ArduinoJson/Array/../Variant/../Misc/../Strings/StringAdapters.hpp:7, from .pio\libdeps\nanoatmega328\ArduinoJson_ID64\src/ArduinoJson/Array/../Variant/../Misc/SerializedValue.hpp:7, from .pio\libdeps\nanoatmega328\ArduinoJson_ID64\src/ArduinoJson/Array/../Variant/VariantData.hpp:7, from .pio\libdeps\nanoatmega328\ArduinoJson_ID64\src/ArduinoJson/Array/ArrayRef.hpp:7, from .pio\libdeps\nanoatmega328\ArduinoJson_ID64\src/ArduinoJson.hpp:17, from .pio\libdeps\nanoatmega328\ArduinoJson_ID64\src/ArduinoJson.h:9, from src\main.cpp:2: .pio\libdeps\nanoatmega328\ArduinoJson_ID64\src/ArduinoJson/Array/../Variant/../Misc/../Strings/../Memory/../Variant/../Polyfills/type_traits.hpp:9:45: fatal error: type_traits/integral_constant.hpp: No such file or directory compilation terminated. C*ompiling .pio\build\nanoatmega328\FrameworkArduino\HardwareSerial3.cpp.o ** [.pio\build\nanoatmega328\src\main.cpp.o] Error 1 ================================================================================== [ERROR] Took 1.65 seconds ================================================================================== The terminal process terminated with exit code: 1 ```

oceansource · August 28, 2019, 5:00pm

Yes, I saw a few other posts that had mentioned it after I wrote mine.

Thanks for taking the time to reply to my post.