Call C code from another package

[tkcaccia]

My package requires the headers provided by the irlba package for C code, and I am receiving this NOTE ('LinkingTo' for ‘irlba’ is unused as it has no 'include' directory), it likely means the irlba package does not provide an include directory with headers to support its integration via LinkingTo.

Moving the header file in the folder "inst/include/" could solve this issue

Thank you for your algorithm and your effort