Problem

In rust-lang/libz-sys#205 I fixed a case where a typo in the include list meant that some files were not included in the published package. The fix was simple:

include = [
    # ...
-    "src/zlib-ng/arch/s390x/**.[ch]",
+   "src/zlib-ng/arch/s390/**.[ch]",
    # ...
]

The fact that this invalid path did not get reported meant that the package was broken for the s390x target. Not great.

Proposed Solution

Intuitively I think every include line should match at least one file. In any other cases, it's redundant (can be removed) or a typo (very valuable to report to the user).

If that sounds reasonable I'd be happy have a go at implementing it.

Notes

No response