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Configuration

Operating system:

Windows 10

PlatformIO Version (platformio --version):

3.6.2a2, through VSCode plugin

Description of problem

A minimal test case is linked below.

Steps to Reproduce

1. Create new project using atmelavr platform, arduino framework. I used megaatmega2560 board.
2. Add lib_ldf_mode = chain+ or lib_ldf_mode = deep+ to platformio.ini.
3. Add #include <SD.h> to main.cpp
4. Build.

Actual Results

LDF erroneously determines that SD library depends on Robot Control library. Build fails because Robot Control cannot be built.

Full output, with modified project files

Relevant portion of output:

Dependency Graph
|-- <SD> 1.1.1 (C:\Users\chris\.platformio\packages\framework-arduinoavr\libraries\SD)
|   |-- <Robot Control> 1.0.3 (C:\Users\chris\.platformio\packages\framework-arduinoavr\libraries\Robot_Control)
|   |   |-- <SPI> 1.0 (C:\Users\chris\.platformio\packages\framework-arduinoavr\libraries\__cores__\arduino\SPI)
|   |   |-- <Wire> 1.0 (C:\Users\chris\.platformio\packages\framework-arduinoavr\libraries\__cores__\arduino\Wire)

and

avr-g++ -o .pioenvs\megaatmega2560\libf55\Robot_Control\Arduino_LCD.cpp.o -c -fno-exceptions -fno-threadsafe-statics -fpermissive -std=gnu++11 -Os -Wall -ffunction-sections -fdata-sections -flto -mmcu=atmega2560 -DPLATFORMIO=30602 -DARDUINO_AVR_MEGA2560 -DF_CPU=16000000L -DARDUINO_ARCH_AVR -DARDUINO=10805 -IC:\Users\chris\.platformio\packages\framework-arduinoavr\cores\arduino -IC:\Users\chris\.platformio\packages\framework-arduinoavr\variants\mega -IC:\Users\chris\.platformio\packages\framework-arduinoavr\libraries\__cores__\arduino\SPI\src
-IC:\Users\chris\.platformio\packages\framework-arduinoavr\libraries\__cores__\arduino\Wire\src -IC:\Users\chris\.platformio\packages\framework-arduinoavr\libraries\Robot_Control\src C:\Users\chris\.platformio\packages\framework-arduinoavr\libraries\Robot_Control\src\Arduino_LCD.cpp
C:\Users\chris\.platformio\packages\framework-arduinoavr\libraries\Robot_Control\src\ArduinoRobot.cpp: In constructor 'RobotControl::RobotControl()':
C:\Users\chris\.platformio\packages\framework-arduinoavr\libraries\Robot_Control\src\ArduinoRobot.cpp:26:42: error: 'LCD_CS' was not declared in this scope
RobotControl::RobotControl():Arduino_LCD(LCD_CS,DC_LCD,RST_LCD){
^

leading to build failure.

Expected Results

Build succeeds; LDF determines that library SD depends on library SPI, not on Robot Control.

Dependency Graph
|-- <SD> 1.1.1 (C:\Users\chris\.platformio\packages\framework-arduinoavr\libraries\SD)
|   |-- <SPI> 1.0 (C:\Users\chris\.platformio\packages\framework-arduinoavr\libraries\__cores__\arduino\SPI)

Changing to chain or deep LDF mode results in successful build, so this seems related to the CPP functionality implied by +.

If problems with PlatformIO Build System:

The content of platformio.ini:

[env:megaatmega2560]
platform = atmelavr
board = megaatmega2560
framework = arduino
lib_ldf_mode = deep+

Source file to reproduce issue:

#include <Arduino.h>
#include <SD.h> // Adding this include triggers inclusion of Robot_Control with deep+ library dependency resolution

void setup() {
  // put your setup code here, to run once:
}

void loop() {
  // put your main code here, to run repeatedly:
}

Additional info