[R-pkg-devel] Executable file warning in CRAN check
Let's look at the check_executables() function inside tools:::.check_packages() [https://svn.r-project.org/R/trunk/src/library/tools/R/check.R]. If the 'file' program is available on the check system, the check for executable files is based on what 'file' thinks about each file in the source package. R CMD check essentially scans for the term " executable" in the output from 'file'. The check result therefore depends on the version of 'file' (and on the involved "magic number file") used on the check system. On my system with $ file --version
file-5.25 magic file from /etc/magic:/usr/share/misc/magic
I get $ file src/LZ4/LICENSE
src/LZ4/LICENSE: ASCII text
so no complaint about that file from R CMD check. It seems that the version of 'file' used on CRAN's macOS check platforms returns something "executable" for that ASCII file, probably because the executable bit is set. To answer your initial question, I don't think there's anything you need to do on your end. Cheers, Sebastian Am 09.04.19 um 00:56 schrieb Travers Ching:
Thanks Sebastian, I'll give it a shot. It seems weird that I can't replicate the warning on a mac laptop, or any other system. Travers On Mon, Apr 8, 2019 at 2:27 PM Sebastian Meyer <seb.meyer at fau.de> wrote:
No false positive. This file is indeed marked as an executable file, see also at https://github.com/cran/qs/blob/0.14.1/src/LZ4/LICENSE, which says
Executable File | 25 lines (20 sloc) | 1.28 KB
On a Unix-based system you could do
chmod -x src/LZ4/LICENSE
to remove the executable bit from that file.
Cheers,
Sebastian
Am 08.04.19 um 23:02 schrieb Travers Ching:
I see the following warning on CRAN:
Result: WARN
Found the following executable file:
src/LZ4/LICENSE
Source packages should not contain undeclared executable files.
See section ?Package structure? in the ?Writing R Extensions? manual.
https://cran.r-project.org/web/checks/check_results_qs.html
This seems like a false positive since it's clearly not an executable,
but I'm wondering if there's anything I should do on my end?
Travers
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