/usr/include/kasten/okteta/config-qca2.h is in okteta-dev 4:17.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | /* Define to 1 if you have the <QtCrypto> header file. */
#define HAVE_QCA2 1
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