How to use a local custom library

Libraries
1

I’m sorry if this is a duplicate post, but I haven’t been able to find the answer I’m looking for.
What I’m trying to achieve is to have a local c++ library, and use it in multiple projects. I don’t want to bother with git and publishing the library if possible since I will be the only one using it anyway. Is this possible? Or if not, is there something close to it?

2

With a file structure like this:

.
├── libraries
│   ├── LibA
│   │   ├── src
│   │   │   ├── LibA.cpp
│   │   │   └── LibA.h
│   │   └── library.json
│   └── LibB
│       ├── src
│       │   ├── LibB.cpp
│       │   └── LibB.h
│       └── library.json
└── projects
    └── projectA
        ├── include
        ├── lib
        ├── src
        │   └── main.cpp
        ├── test
        └── platformio.ini

and the use of Local Folder and “Symbolic Link” feature you can include your libraries like this:

lib_deps = 
  symlink://../../libraries/LibA
  symlink://../../libraries/LibB
1 Like
3

So I’ve got this working for my simple libraries; however I also have some more complex libraries in which I inherit from a base class. Say LibParent contains the base class, and I have two libraries (LibChildA and LibChildB) that inherit from the parent class, now I’m getting include errors in the child classes.

lib_deps = 
  symlink://../../libraries/LibParent
  symlink://../../libraries/LibChildA
  symlink://../../libraries/LibChildB

So in LibChildA.h, the following is not possible: #include "LibParent.h"
My guess is I need to tell the child class that it needs to look in other libraries, so I added the following in the file LibChildA/library.json, but it still won’t work. Am I doing the linking wrong?

    "dependencies":
    [
      {
        "name": "LibParent",
        "version": "*"
      }
    ],
4

Since a local folder such as ‘libraries’ on a hard disk is not a registry in the true sense of the word, a ‘dependency’ setting cannot help install the appropriate library automatically.

This won’t work because #include "LibParent.h" will look in the same folder of the including file (LibChildA / LibChildB).

You have to use the “global include” : #include <LibParent.h>

Another way would be to put your private libraries into the lib folder - See my answer in Private library not finding one of other private libraries