Build_src_filter for multiple projects

PlatformIO IDE
1

Hey! So, I want to have multiple independent sources (but with access to the same libs) in one PIO project, switchable via ENV.
Looking into the docs and discussions here I thought using build_src_filter would be pretty straight forward. But it doesn’t work.

[env]
platform = https://github.com/Community-PIO-CH32V/platform-ch32v.git

[env:project1]
build_src_filter = +<project1>

[env:project2]
build_src_filter = +<project2>

This just gives me Error: Nothing to build. Please put your source code files to the 'projectroot\src' folder for both environments. I tried many variations of the filter but the result is the same.
My project structure is simply the standard with src deleted and instead multiple projectX in it.
How do I use this properly?

2

The build_src_filter is still relative to the src_dir, which is by default src/. So the expected folder structure is <root>/src/project1 and <root>/src/project2, not <root>/project1 etc.

1 Like
3

Ah :man_facepalming:
So this works now! Thank you!

[env:project1]
build_src_filter = +<../project1>

[env:project2]
build_src_filter = +<../project2>