I got an issue that prevents some FTP backups to work using net-fs/curlftpfs-0.9.2-r5. It simply prevents the `curlftpfs` command to work properly in its normal usage: $ curlftpfs ftp.example.com /home/backup/ftp Error setting curl: Unfortunately nothing was very helpful either with debug arguments, curl's environment variables or even with strace. Inspired by [1], I added some debugging in `ftpfs.c` and found that the issue lies at line 1663: curl_easy_setopt_or_die(easy, CURLOPT_KRB4LEVEL, ftpfs.krb4); It turns out that curl is compiled without support for kerberos as it is irrelevant on this machine. I worked around the initial issue in two distinct ways: - Rebuilding curl with the kerberos use flag - Commenting line 1663 mentioned here A cleaner approach would be appreciated, and if none, this post would help people work around the issue. [1]: https://curl-library.cool.haxx.narkive.com/KHc3Ri42/empty-error-message-error-setting-curl#post5 Reproducible: Always Steps to Reproduce: 1. Install curl version 8 without the kerberos use flag 2. Install the latest version of curlftpfs 3. Execute: `curlftpfs ftp.example.com /home/backup/ftp` Actual Results: An empty error message that is not very helpful. Expected Results: `curlftpfs` should probably ignore the error and go on without support for kerberos, or should check for kerberos support in curl before-hand. Another (dirty) way to fix this would be to require the kerberos use flag on curl for curlftpfs.
