Library source code directory can't be subdir or root dir

[aamcampbell]

The documentation for the module.json file clearly states that a subdirectory may be used for the "lib" property of a library module:

For example, to build a library out of the contents of ./some/subdirectory instead of the default source directory, use:

"lib": "./some/subdirectory"
(http://yottadocs.mbed.com/reference/module.html)

However, this does not work for me. I have a "source" folder which is empty except for a "subsrc" directory, which contains source code. If I set "lib": "./source", my source files are compiled correctly. If I set "lib": "./source/subsrc", yotta finds no sources and generates an empty placeholder library instead.

The same thing happens when I set "lib": "./" (no sources are found). The behavior of using the root directory as the source dir is not clearly documented, but it seems like it ought to be allowed.

[autopulated]

Thanks for reporting!

The subdirectory should work, so that's definitely a bug. Does it work if you try a subdirectory of somewhere other than ./source? (I ask because ./source is the default location, so it's special-cased in a few places).

Putting source files directly in the root directory is probably not generally a good idea, but I think it should be supported for compatibility with existing libraries that do that.

[aamcampbell]

Yes, it works fine with ./anyfolder or just anyfolder, but not with ./folder1/folder2. I haven't tried ./source/folder2.

The reason I might use the root directory for sources is to maintain compatibility with other build systems. A custom cmake is probably a better idea, but it would be nice to choose.